34
Engineered Filter Media Leopold® Engineered Filter Media® Products (Gravel, Sand & Anthracite)

Leopold® Engineered Filter Media® Products (Gravel, Sand

  • Upload
    others

  • View
    2

  • Download
    0

Embed Size (px)

Citation preview

Page 1: Leopold® Engineered Filter Media® Products (Gravel, Sand

Engineered Filter Media

Leopold® Engineered Filter Media® Products (Gravel, Sand & Anthracite)

Page 2: Leopold® Engineered Filter Media® Products (Gravel, Sand

TABLE OF CONTENTS

Leopold® Engineered Filter Media® Products

1 RECEIVING AND STORAGE

1.1 Shipment/Receiving

1.2 HANDLING SUPERBAGS (BULK BAGS)

1.3 LOSS OR DAMAGE IN TRANSIT

1.4 STORAGE

1.4.1 LONG-TERM STORAGE

1.4.2 STACKING

2 INSTALLATION PLANNING

2.1 GENERAL

2.2 FILTER PREPARATION AND EQUIPMENT CHECK OUT

2.3 BED DIAGRAM AND INVENTORY LIST

2.4 BED ELEVATION PLANNING

2.5 MEDIA LOADING CALCULATIONS

2.6 EQUIPMENT SUGGESTED (NOT BY XYLEM)

3 MEDIA LOADING PROCEDURE

3.1 INSTALLING SUPPORT GRAVEL

3.1.1 GRAVEL PLACEMENT

3.1.2 GRAVEL PLACEMENT BY EDUCTOR METHOD

3.1.3 LEVELING

3.2 INSTALLING MEDIA (SAND AND ANTHRACITE)

3.2.1 EDUCTOR METHOD

3.2.2 ALTERNATE MEDIA LOADING PROCEDURE

3.3 MEDIA INSTALLATION FOR UNDERDRAINS WITH LEOPOLD, A XYLEM BRAND, I.M.S.® CAP

4 MAINTENANCE AND INSPECTION

4.1 SKIMMING

4.2 CORING

4.3 CRIBBING

4.4 DISINFECTION

5 WARRANTY, SERVICE AND TOPPING MEDIA

5.1 WARRANTY

Page 3: Leopold® Engineered Filter Media® Products (Gravel, Sand

TABLE OF CONTENTS

Leopold® Engineered Filter Media® Products

5.2 SERVICE

5.3 TOPPING, CORING AND CRIBBING MEDIA

5.4 ACCEPTABLE INDEPENDENT TESTING LABORATORIES

6 NSF CERTIFICATION

7 MATERIAL SAFETY DATA SHEETS

7.1 IDENTIFICATION

7.2 HAZARDOUS INGREDIENTS

7.3 PHYSICAL DATA

7.4 FIRE AND EXPLOSION DATA

7.5 REACTIVITY DATA

7.6 HMIS RATING

7.7 HEALTH HAZARD DATA

7.8 CONDITIONS FOR SAFE USE

7.9 SPILL OR LEAK PROCEDURES

7.10 TRANSPORTATION INFORMATION

8 BED DIAGRAM AND MEDIA DESCRIPTION

9 PRODUCT DATA

Page 4: Leopold® Engineered Filter Media® Products (Gravel, Sand

RECEIVING AND STORAGE

Leopold® Engineered Filter Media® Products

1 RECEIVING AND STORAGE 1.1 Shipment/Receiving Xylem Water Solutions Zelienople LLC will ship by truck or rail in 50 to 100 pound bags (cubic foot bags) or in superbags (bulk bags) weighing from 2000 to 4000 pounds. Standard small bags (cubic foot bags) are almost always palletized and pallets may weigh up to 3000 pounds. Superbags may not be on pallets, especially when shipped by rail car.

Forklift vehicles are commonly used to off-load pallets. Superbags have lifting loops for forklift forks (tines). High lift forklifts must be utilized to remove and transport superbags.

CAUTION: Stabbing the superbags with the forks of a forklift is not an acceptable means of removing them from rail cars. Xylem does not recommend bulk shipments. It is not practical to place media directly from the rail car or truck (except for sand) into the filter. The demurrage on the vehicles will be cost prohibitive. Even if the rail car or truck is in close proximity to the filters, the mechanics involved with correlating the media on hand to what goes into the filter makes it almost impossible to organize. Pneumatic conveying is abrasive to anthracite coal and the effective size and uniformity coefficient may be changed. Hydraulic conveying or dry placement is recommended and explained in Section 3.

1.2 HANDLING SUPERBAGS (BULK BAGS) Superbags are designed to reduce the cost of handling, shipping and storing your product. The life of the bag depends on the product contained and the care exercised in handling the bag. The following recommendations are designed to assist you in properly caring for the superbags.

Use All Four Straps Superbags are engineered for lifting and suspension using all four lift loops. Using fewer than four (4) loops could cause damage to the bag.

Page 5: Leopold® Engineered Filter Media® Products (Gravel, Sand

RECEIVING AND STORAGE

Leopold® Engineered Filter Media® Products

Avoid Contact with Forklift When transporting and handling a superbag with a forklift, be sure that:

1. The superbag is properly positioned on the forks to guard against it hitting or rubbing on the mast when moving, raising, or lowering the superbag.

2. The mast is tilted back slightly to insure the superbag does not come off when moving.

Avoid High Temperatures Avoid prolonged contact with temperatures above 120°F.

Outdoor Storage Superbags are treated to retard the effects of ultra violet light, but prolonged exposure to sunlight will weaken the fabric. Superbags should be covered (full or empty) if they are stored outdoors. See Section 1.4.1.

Keep Lifting Straps Vertical To minimize strain, keep the lift loops as nearly vertical as possible. Make sure lifting hooks or outside edges of forklift forks are no further apart than lift loops.

Protect Lift Loops Prior to handling the superbag, forklift forks should be inspected for sharp edges or burrs. Rounding the edges or padding the forks guards against damaging the lift loops or sleeves. Check top and bottom edges of forks.

Use Sling to Lift Fallen Superbags Loop pieces of rope or webbing through all four (4) loops, then secure each end to a forklift fork and gently lift.

Avoid Jerking Motions When the superbag is suspended, avoid jerking motions. This creates undue stress on the lift loops and may cause damage.

Never Drag Superbags When negotiating ramps, raise and/or tilt the forklift forks to keep the superbag from swinging or touching the ground. Never drag the superbag.

CAUTION: Use Stevedore Straps or Spreader Bars when lifting superbags with a crane

Page 6: Leopold® Engineered Filter Media® Products (Gravel, Sand

RECEIVING AND STORAGE

Leopold® Engineered Filter Media® Products

Avoid Contact with Sharp Objects Most of the damage done to superbags is caused by ripping or tearing with sharp or abrasive objects. Inspect floor and sidewalls of trucks, rail cars and containers before loading.

1.3 LOSS OR DAMAGE IN TRANSIT It is the consignee's (contractor) responsibility to inspect the shipment immediately upon arrival and notify the carrier and Xylem if loss or damage has occurred. If loss or damage is evident at the time of delivery, make a notation of the details on the carrier's delivery receipt before signing it.

If loss or damage is concealed and discovered after delivery, request the carrier, in writing, to make an inspection and issue a report. THIS MUST BE DONE WITHIN 15 DAYS. Xylem is willing to assist in claim matters. However, Xylem cannot accept responsibility for material shipped FOB shipping point.

Please note, as consignee you are responsible for the protection of your media. Delivery constitutes acceptance and transfer of title, so observe the following storage requirement.

1.4 STORAGE CAUTION: Prior to handling or moving superbags, refer to Section 1.2 for a description of the recommended methods of handling and moving superbags

1.4.1 LONG-TERM STORAGE For efficiency reasons, the bagged materials (all sizes) should be stored as close to the filters as practical. Xylem will not be responsible for double handling of the bagged material.

Note that different sized gravel has different identifying tags on the bags (all sizes). Stock all bags (all sizes) with the same type of tag in the same area.

Do not store bagged materials (all sizes) directly on the ground, or even on a hard surface. They preferably should be palletized so the bags are elevated to ensure air flow under and around the bags to prevent the bags from rotting. As a minimum, the bags (all sizes) can be stored on plywood sheets for short-term storage, not longer than two (2) weeks.

Bags of media (all sizes) must be protected from sunlight, if stored longer than 2 weeks. The bags should be stored under cover or covered with a UV resistant plastic sheet (not clear plastic) and secured. The plastic sheets or tarps are not provided by Xylem.

Page 7: Leopold® Engineered Filter Media® Products (Gravel, Sand

RECEIVING AND STORAGE

Leopold® Engineered Filter Media® Products

1.4.2 STACKING Do not stack superbags or pallets of small bags more than two pallets of small bags or two superbags high. Care should be taken not to tear the top of the bags with the bottom of the pallet of the top layer.

Page 8: Leopold® Engineered Filter Media® Products (Gravel, Sand

RECEIVING AND STORAGE

Leopold® Engineered Filter Media® Products

Page 9: Leopold® Engineered Filter Media® Products (Gravel, Sand

RECEIVING AND STORAGE

Leopold® Engineered Filter Media® Products

Page 10: Leopold® Engineered Filter Media® Products (Gravel, Sand

INSTALLATION PLANNING

Leopold® Engineered Filter Media® Products

2 INSTALLATION PLANNING 2.1 GENERAL The installation of Leopold, a xylem brand, Engineered Filter Media® Products is simple and problem-free provided that these recommendations are followed. In all cases, it is recommended that an authorized Xylem Field Service Representative be present to instruct and train all personnel in the appropriate installation procedures. The Xylem Field Service Representative should be present for the complete installation of at least one filter as a minimum. Please refer to the plans and specifications for this project. If "certification" of the installation is required by Xylem, an authorized Xylem Field Service Representative must be present during the entire installation.

Please Note: Forty-five (45) days notice is needed to schedule a Xylem Field Service Representative.

If site testing is required by the engineering specification, it must be coordinated with Xylem. Xylem cannot be responsible for pre-installation testing if the media has already been installed.

2.2 FILTER PREPARATION AND EQUIPMENT CHECK OUT Before placing gravel into any filter, all of the underdrain system should be carefully checked for physical damage. All loose material such as grout and construction debris must be removed, and the entire filter box thoroughly cleaned. Each distribution hole in the underdrain must be open; i.e., not blocked with grout splash, protective tape, or other foreign material.

It is required that each filter be backwashed before any filter materials are placed to ensure that the underdrain is clean, and free-flowing. It is also good practice to verify the underdrain system's effectiveness. During hydraulic (water) only backwash, watch for air bubbles released into the filter box. Some are to be expected at the beginning of the backwash but should stop within the first minute or two. If the air does not stop or the air comes out in "boils" (uncontrolled air), air is being drawn into the backwash stream or air is coming out of solution by cavitations. The source of the air must be found and corrected to protect the filter support gravel or Leopold, a xylem brand, I.M.S.® Cap.

Additionally, before the gravel is installed, the automatic filter control system must be started-up. Malfunctioning automatic filter control systems may cause transients or uncontrolled air, which may upset the hourglass gravel thus preventing the media from functioning properly. It must be verified that all mechanical and electrical components in the control system function as designed.

Page 11: Leopold® Engineered Filter Media® Products (Gravel, Sand

INSTALLATION PLANNING

Leopold® Engineered Filter Media® Products

If the media is installed before the automatic filter control system is checked out and accepted, the media warranty may be void. If “boils” or uncontrolled air occurs in the air scour (if applicable) or hydraulic backwash, ask the engineer to review the system design and contact the Xylem Field Service Manager. If freezing conditions exist, some means may be needed to thaw the materials before placement. In many cases, the gravel, sand and anthracite are "dry" when shipped from the factory and will not freeze if stored out of wet weather. Inspect the media to see if it is frozen.

2.3 BED DIAGRAM AND INVENTORY LIST Review the bed diagram (media design drawing) and inventory list (bill of material) provided in Section 8. This is the same bed plan specified by the engineer and provided in the approved submittal. This is the media installation plan. If the bed diagram differs from what was specified, notify Xylem to resolve any disparities before the media is installed.

Take a physical inventory of the media on site to see if there is enough media on site to do the job. Media may be shipped in intervals because of the manufacturing cycle and an effort to keep the job moving; or by plan between the contractor and Xylem because of limited space on the construction site. Depending on the project specification, approximately 1 to 2 percent extra of each gravel layer and from 1 to 5 percent extra of other media layers will be shipped primarily to allow for skimming after backwash. There will not be much extra material, so it should be handled carefully to avoid excessive spillage. Salvage as much clean material as possible from broken bags and re-bag. Notify Xylem of any shortages.

2.4 BED ELEVATION PLANNING Referencing the bed diagram as a guide, use white, yellow, or orange chalk or environmentally acceptable spray paint with a straight edge to mark the filter wall with the elevation of the media for each layer. Then, when leveling or checking the media elevation, fill the filter with water to the mark for that layer. The finished elevation should be shown in the project specification.

The finished elevation for the first layer of media on top of the hourglass gravel is an exception. Approximately 1 to 1-1/2 inches of media will sink into the top four inches of coarse gravel layers in the hourglass configuration. The amount of material to be placed in each layer should be determined. The total volume of each material delivered should be divided by the total number of filters, and that quantity compared to the calculated volume of each layer per Section 2.5. If the quantity delivered is lower than the calculated volume, but within the placement tolerances listed on the media design drawing (bed diagram), then the apportioned delivered quantity should be placed in each filter; not the calculated volume. For

Page 12: Leopold® Engineered Filter Media® Products (Gravel, Sand

INSTALLATION PLANNING

Leopold® Engineered Filter Media® Products

example, if the filters need a particular 3-inch layer, 1-1/4 inch short on that layer in one filter is not acceptable.

The project specification will usually have backwashing and skimming requirements for laying media. Often there are extreme limitations of water available early in the job construction. If the engineer will allow, the gravel and sand can be backwashed together and then the sand skimmed. Note that the sand must be skimmed.

In the first filter, install the apportioned amount and backwash. An elevation measurement before skimming will indicate if additional material is required. Make any necessary additions, backwash again and then skim. The load chart on plan can then be modified and the correct amount used the first time on all subsequent filters.

2.5 MEDIA LOADING CALCULATIONS The weight or volume of media for each layer of media can be calculated from the following formulas and following conversion charts:

Surface Area Length (feet) x width (feet) = square feet (ft²)

Volume Length (feet) x width (feet) x height (feet) = cubic feet (ft³)

Rate of Rise Rate of rise is registered by inches of water rise, which corresponds to gallons per minute per square foot as follows:

Rise Rate Per Minute Gpm/ft² 10" 6.5 15" 9.5 20" 12.5 25" 15.5 30" 18.5

Conversion from Inches to Feet Inches = Feet 1.5 = .125 3.0 = .250 4.0 = .333 4.5 = .375 6.0 = .500 9.0 = .750 12.0 = 1.000 16.5 = 1.375 18.0 = 1.500

Page 13: Leopold® Engineered Filter Media® Products (Gravel, Sand

INSTALLATION PLANNING

Leopold® Engineered Filter Media® Products

19.5 = 1.625 24.0 = 2.000

Material Bulk Densities Pounds/ft³

High Density Filter Sand

Ilmenite 164

Garnet 123

High Density Support Gravel

Ilmenite 168

Garnet 147

Filter Sand 100

Silica Gravel 84 to 105

Anthracite Coal

Wet 54 to 56

Dry 50

Granular Activated Carbon

(GAC) 20 to 28

Page 14: Leopold® Engineered Filter Media® Products (Gravel, Sand

INSTALLATION PLANNING

Leopold® Engineered Filter Media® Products

Standard & Bulk Bag Weight/Volume Relationship One Cubic

Foot Bags Superbags

Gravel & Sand 100 lbs 3000-4000 lbs (30-40 ft³)

Anthracite Coal

Wet 54-56 lbs 2000 lbs (37 ft²) Dry 50 lbs 2000-2500 lbs (40-45 ft²)

Granular Activated Carbon

(GAC)*20-28 lbs 2000 lbs (71-77 ft²)

100 Lb. Bags 2000 Lb. Bags

Garnet Gravel 0.71 ft² 14.3 ft²

Garnet Sand 0.81 ft² 16.3 ft²

Ilmenite Gravel 0.60 ft² 11.9 ft²

Ilmenite Sand 0.61 ft² 12.2 ft²

*Granular Acitvated Carbon is usually packaged in 55 lb bags which are about two cubic feet or 1000 lb superbags which are about 37 cubic feet.

2.6 EQUIPMENT SUGGESTED (NOT BY XYLEM) The equipment used within the filter for media placement is generally as follows:

1. Flat shovels for spreading material.

2. Rakes for spreading and grading material.

3. Cement float used in leveling gravel to water grade.

4. Ladder for access in and out of filter compartment.

5. Media board for placing media before spreading material. Prevents fracturing of gravel material and upsetting previously placed material. Size: 3 feet by 3 feet by 3/4 inch plywood.

6. Walking boards used by placement crew in the placing of filter material. Prevents punching pockets into preceding material placed in filter compartment. Size: 1 foot by 1-1/2 feet by 1/2 inch to 3/4 inch plywood. Each placement crew member should use two walking boards when in filter compartment.

7. Ladder board for setting ladder on in filter compartment. Prevents punching holes into filter material. Size: Same as walking board but drill a 1-inch hole at any corner of board for rope attachment.

Page 15: Leopold® Engineered Filter Media® Products (Gravel, Sand

INSTALLATION PLANNING

Leopold® Engineered Filter Media® Products

8. Rope for lowering tool in and out of filter compartment. Used for lowering ladder board in and out of filter compartment.

9. Dust mask respirators.

If the eductor method is used, the following additional equipment is used:

1. Eductor to transport gravel, sand or anthracite.

2. Discharge hose for eductor.

3. Used tire to diffuse energy of water carrying media.

4. Inlet Hose for eductor. An eductor and discharge hose can be rented from Xylem by contacting Xylem. The inlet hose, from the fire hydrant connection to the 4-inch hose connection on the eductor, is not provided by Xylem. See Figure C.

Page 16: Leopold® Engineered Filter Media® Products (Gravel, Sand

MEDIA LOADING PROCEDURE

Leopold® Engineered Filter Media® Products

3 MEDIA LOADING PROCEDURE NOTE: Installing support gravel is required. When Leopold, a xylem brand, I.M.S.® Cap is supplied, the need for gravel is eliminated.

3.1 INSTALLING SUPPORT GRAVEL

3.1.1 GRAVEL PLACEMENT To prevent damage to the underdrain, the first layer of large gravel must not be allowed to free-fall onto the underdrain. Being relatively large, the material has a tendency to fracture if it is dropped very far onto a solid object.

The material for the next layers should not be allowed to free-fall directly onto a placed layer as the impact will dislodge the material beneath. Care should be exercised to avoid disruption of any gravel layer once it has been leveled to grade.

NOTE: Every gravel layer must be level prior to placing the next layer. After the first layer is installed, Do Not Throw The Gravel With A Shovel. It can gouge a hole in the layer below. Push the gravel with a rake or "screed" it with a board. It is important that gravel layers are not walked on during placement, as a footprint could cause dislocation and/or mixing of material. Have the placement crew walk on boards or plywood. Make sure all boards are removed after usage, as leaving them in the filter will disrupt the flow and cause that section of the filter to fail. Care should be taken if roofing or constructing above the filters after the gravel or media is placed since roofing and construction materials dropped into the filter can cause filter failure. A careful count should be kept of boards used to ensure that all boards have been removed. Xylem recommends emptying superbags into the filter by slow mounding as shown as Figure A or by the splash board technique as shown on Figure B. Allowing gravel to free-fall through 3 to 4 feet of water is not recommended. The layers will be disturbed and malfunctioning of the filter may occur.

3.1.2 GRAVEL PLACEMENT BY EDUCTOR METHOD An eductor may be used to "sluice" the gravel and media in with water. See Figure C. For this method, a minimum of four to five feet of water is required in the filter. It is necessary to keep the discharge hose close to the surface and only slightly submerged. The hose discharge must be horizontal or parallel to the water surface to prevent the new material from disturbing the layer below. The discharge hose may be directed through the water toward a filter wall.

Page 17: Leopold® Engineered Filter Media® Products (Gravel, Sand

MEDIA LOADING PROCEDURE

Leopold® Engineered Filter Media® Products

An eductor and discharge hose can be rented from Xylem by contacting Xylem. The inlet hose, from the fire hydrant connection to the 4-inch hose connection on the eductor, is not provided by Xylem. See Figure C.

3.1.3 LEVELING By any of the above defined three loading techniques (Figures A, B & C), the gravel must be leveled for each layer. Once the gravel for a given layer is in the filter, adjust the water level to the mark on the sidewall established previously, then rake the gravel level using the water surface as a guide. The goal is to have the gravel level ± one-half of a rock. However, that is not practical for the barrier level gravel.

Long boards can be used to "screed" the media level. However, steel garden rakes or a cement float may be required for final leveling to the watermark.

3.2 INSTALLING MEDIA (SAND AND ANTHRACITE)

3.2.1 EDUCTOR METHOD Install the media with the eductor in a manner similar to that used for the gravel. There is no need to level the media. If the pile gets too large, move the discharge hose to a new location. When the calculated amount is in, slowly backwash it clean. Backwashing will level the media. Once it is clean, the media can be skimmed per the project specification.

Backwash and drain the filter and skim at least 1/2 inch off a 10-12 inch layer of sand and at least 1 inch off an 18-20 inch layer of anthracite (Figure D). Workers performing the skimming function must work from boards to keep from pushing fines back down into the bed with their feet. Before skimming, the water must be completely drained from the filter. If the water level is too high, the media will be soupy and won't support any weight.

CAUTION: It is a hazard to walk on fluidized media.

3.2.2 ALTERNATE MEDIA LOADING PROCEDURE If the eductor cannot be used, the gravel and media may be installed directly from the superbag using a forklift and/or a crane. Leveling and skimming procedures will be the same as outlined in the Section 3.1.3.

Lower the superbag to within 15-18 inches of the bottom. When the first (outer) drawstring is pulled, the snout will come down. It should not be more than 6 inches from the existing surface (Figure A). Then pull the second drawstring. A small amount of gravel will come out until it forms a pile sufficient to choke off the flow. Then, raise the bag slowly to allow it to empty slowly. If a crane is used, it must be capable of slow operation.

Page 18: Leopold® Engineered Filter Media® Products (Gravel, Sand

MEDIA LOADING PROCEDURE

Leopold® Engineered Filter Media® Products

CAUTION: Under no circumstances should the media free fall onto the bare underdrain or any previously installed layer of gravel or media.

If the bag cannot be lowered close to the bottom, it must be emptied onto an inclined "splash board," see Figure B. The media will hit the splashboard and spread out without disturbing the layer below. The "splash board" should be a minimum 4 x 8 foot sheet of plywood 5/8" or 3/4" thick. It should be raised on one end while the other end sits on another board to prevent it from digging in and disrupting the layer below. It should make approximately a 30° angle to the horizontal. Care should be taken to count all boards and implements to insure that they are all removed when the work is done.

After a pile is established by emptying one bag, others can be emptied on top of it without restraint. If a splashboard is being used, several bags will have to be emptied onto it to make a big enough pile. After that, the splashboard may be removed and other bags emptied on top of the pile.

3.3 MEDIA INSTALLATION FOR UNDERDRAINS WITH LEOPOLD, A XYLEM BRAND, I.M.S.® CAP With the Leopold, a xylem brand, I.M.S.® Cap eliminating the need for gravel, this procedure applies to sand, anthracite and GAC. When installing media with the I.M.S.® Cap, the underdrain must be allowed to cure for at least 72 hours prior to media placement. After sufficient cure time is achieved, the underdrain must be backwashed following the procedure found in Section 2 of this manual. Upon completion of the backwash, drain the water level to approximately 1-2" above the I.M.S.® Cap. The underdrain will be completely submerged at this point. The required media may now be placed using either the wet or dry methods found in Sections 3.1 and 3.2 of this manual.

CAUTION must be exercised when placing the first layer of media. Do not walk on thin layers directly in contact with the I.M.S.® Cap. This will ensure that media particles are not ground into the I.M.S.® Cap.

CAUTION: When installing gravel or media, all workers in the filter should wear dust masks. Use an appropriate OSHA and NIOSH approved dust mask respirator (not provided by Xylem). See attached Occupational Health Guideline Documents shown in Section 7.

Page 19: Leopold® Engineered Filter Media® Products (Gravel, Sand

MEDIA LOADING PROCEDURE

Leopold® Engineered Filter Media® Products

Page 20: Leopold® Engineered Filter Media® Products (Gravel, Sand

MEDIA LOADING PROCEDURE

Leopold® Engineered Filter Media® Products

Page 21: Leopold® Engineered Filter Media® Products (Gravel, Sand

MAINTENANCE AND INSPECTION

Leopold® Engineered Filter Media® Products

4 MAINTENANCE AND INSPECTION 4.1 SKIMMING All filter media degrades with time and backwashing. The result of the degradation is fines, which are washed to the top of the filter bed and some are washed over the trough weir to waste.

Filters should be checked quarterly to see that the top inch of anthracite contains no more than 20 percent passing a U.S. #20 mesh sieve.

Samples should be taken from four or more separate locations. Dry the sample with a hair dryer and run through a U.S. #20 sieve. If more than 20 percent pass through the sieve, skim the fines from the filter.

Before skimming, the water must be completely drained from the filter. If the water level is too high, the media will be soupy and won't support any weight.

CAUTION: It is a hazard to walk on fluidized media.

To skim the fines from the top of the filter bed; backwash and drain the filter, then skim at least 1 inch of anthracite fines. See Figure D.

A well run and maintained filter will lose approximately two inches of anthracite coal per year due to the skimming procedure described above and the normal attrition expected during backwash. A filter should not be allowed to reduce in depth over two inches before being "topped off" with new anthracite coal.

Add anthracite coal to the filter as described in the preceding instructions of this manual, see Section 3.2. The new anthracite coal should be backwashed and skimmed to remove initial fines. Usually, for replacement anthracite, this will be the top 1/8 to 1/4 inch of the added layer.

It is important to replace filter coal with the same material as described in this manual. The design engineer has made great effort to ensure that the filter used at this treatment plant is of the highest quality consistent with the entire treatment process. Replacement with materials other than originally supplied may result in inferior filter performance. Therefore, to replace any filter equipment and/or media, you should contact the original supplier of the material:

Page 22: Leopold® Engineered Filter Media® Products (Gravel, Sand

MAINTENANCE AND INSPECTION

Leopold® Engineered Filter Media® Products

4.2 CORING As filters become older (over 3 years) they should be cored semi-annually to determine the status of the gravel, sand, anthracite or other media below the surface. A technique known as "coring" is used to take a 4-inch circular sample of the media from the anthracite to the gravel. The sample can then be analyzed with standard sieves to see that the layers of media are as the design engineer planned.

The Xylem Field Service Representative has the coring equipment and can arrange for the coring and evaluation of the media layers.

4.3 CRIBBING If there is a question if the media layers have been upset or the underdrain disturbed, the filter can be cribbed to further inspect the media and the underdrains. "Cribbing" consists of systematically inserting round or square sheets of metal of a 3 to 4 foot diameter into the media and removing it layer by layer. After inspection, the media can be reinstalled in the same manner so the filter is as originally designed.

This technique can be used to repair media "boils" or upsets as long as there are not too many in each filter. At a point it is more economical to remove the whole filter bed and reinstall.

Xylem provides "cribbing" service.

4.4 DISINFECTION Over time, especially in tertiary wastewater treatment plants, the filters may be reduced in efficiency or clogged due to biological or algal growth. Therefore, the filter should be periodically disinfected.

Consult AWWA-B100 (latest edition) for the recommended sterilization procedure.

Page 23: Leopold® Engineered Filter Media® Products (Gravel, Sand

WARRANTY, SERVICE AND TOPPING MEDIA

Leopold® Engineered Filter Media® Products

5 WARRANTY, SERVICE AND TOPPING MEDIA

Xylem

227 South Division Street

Zelienople, PA 16063 USA

Phone: (724) 452-6300

Fax: (724) 452-1377

www.FBLeopold.com

5.1 WARRANTY SELLER warrants that Leopold, a xylem brand, Engineered Filter Media® Products will meet the specifications established by the AWWA (American Water Works Association) B-100 (latest edition). BUYER shall be responsible for verifying that the filter media meets or exceeds the AWWA B-100 (latest edition) specifications at the point of sale. Testing shall be by an independent laboratory, which regularly performs testing of filter media. BUYER shall notify Xylem immediately upon discovery of any defective product. The SELLER shall have the right to inspect said product and BUYER shall, if requested, return the defective product to the SELLER with transportation prepaid. No liability is assumed by the seller under any circumstances for labor, material or other costs associated with the removal, replacement or repair of defective equipment or reinstallation of replacement equipment, unless previously approved in writing by an authorized employee of the seller.

Xylem shall not be liable for indirect, special, incidental or consequential damage or penalties and does not assume any liability of BUYER or others, or to others, for injuries to persons or property resulting from the alleged failure of Leopold, a Xylem brand, products.

The above warranty is in lieu of all other warranties expressed or implied, including merchantability and fitness for a particular purpose.

Page 24: Leopold® Engineered Filter Media® Products (Gravel, Sand

WARRANTY, SERVICE AND TOPPING MEDIA

Leopold® Engineered Filter Media® Products

5.2 SERVICE A Xylem Field Service Representative is available for media installation, and related services, on a paid basis and can be arranged by contacting the Xylem Service Department at the above number.

NOTE: Forty-five (45) days lead time is needed to schedule an Xylem Field Service Representative.

5.3 TOPPING, CORING AND CRIBBING MEDIA Topping media, Coring and Cribbing services can be arranged on a paid basis by contacting the Xylem Service Department at the above number.

5.4 ACCEPTABLE INDEPENDENT TESTING LABORATORIES 1. Pennoni Associates, Inc. 2041 Avenue C

Suite 100

Bethlehem, PA 18017

Phone: (610) 231-0600

Fax: (610) 231-2033

www.pennoni.com

2. Geoscience Engineering 1252 Mid Valley Drive

Mid Valley Industrial Park

Jessup, PA 18434

(570) 489-8717

Dave Yeosock

3. Hawk Mountain Laboratories

201 Clay Avenue

West Hazleton, PA 18201

(570) 455-6011

David Gittleman

4. Bowser-Morner, Inc.

4518 Taylorville Rd.

Page 25: Leopold® Engineered Filter Media® Products (Gravel, Sand

WARRANTY, SERVICE AND TOPPING MEDIA

Leopold® Engineered Filter Media® Products

Dayton, OH 45424

Phone: (937) 236-8805

www.bowser-morner.com

Page 26: Leopold® Engineered Filter Media® Products (Gravel, Sand

NSF CERTIFICATION

Leopold® Engineered Filter Media® Products

6 NSF CERTIFICATION

ANSI/NSF STANDARD 61 LISTING OF CERTIFIED DRINKING WATER SYSTEM COMPONENTS - HEALTH EFFECTS

(381-382)

Page 27: Leopold® Engineered Filter Media® Products (Gravel, Sand

NSF CERTIFICATION

Leopold® Engineered Filter Media® Products

NOTE: INSERT LATEST NSF CERTIFICATION LISTING HERE FOR ALL PROJECTS

Page 28: Leopold® Engineered Filter Media® Products (Gravel, Sand

MATERIAL SAFETY DATA SHEETS

Leopold® Engineered Filter Media® Products

7 MATERIAL SAFETY DATA SHEETS 7.1 IDENTIFICATION PRODUCT NAME: Anthracite Coal SYNONYMS: Coal, Carbon

MANUFACTURER: INFORMATION TELEPHONE:

Xylem (724) 452-6300

227 South Division Street EMERGENCY TELEPHONE:

Zelienople, PA 16063 (724) 452-6300

DATE OF FORM PREPARATION: 07/25/02 SUPERSEDES: 10/05/98

7.2 HAZARDOUS INGREDIENTS HAZARDOUS COMPONENTS CAS NUMBER OSHA PEL ACGIH TLV PERCENT

Anthracite Coal 8029-10-5 Total Mass - > 99% Coal 10.0 mg/m3

Amount of dust varies with the Respirable Respirable Coal

Sizing of the product. May Mass = Dust Fraction is

Contain free silica. Do not 2.0 mg/m3 <5% Quartz &

Breathe dust. Follow OSHA Typical Coal

Standards for crystalline silica Respirable Respirable Dust

(Quartz) Quartz TWA Fraction is

Crystalline Silica (Quartz)* 14808-60-7 0.1 mg/m3 is 0.1 mg/m3 <1% Quartz

*Free Silica is listed as a carcinogen by IARC, see Section VII – Health Hazard Data

Page 29: Leopold® Engineered Filter Media® Products (Gravel, Sand

MATERIAL SAFETY DATA SHEETS

Leopold® Engineered Filter Media® Products

7.3 PHYSICAL DATA APPEARANCE AND ODOR: Black granules or powder SPECIFIC GRAVITY: 1.40 to 1.75

Odorless

BOILING POINT: N/A MELTING POINT: N/A

VAPOR PRESSURE: N/A VAPOR DENSITY: N/A

EVAPORATION RATE: (Butyl acetate=1) N/A SOLUBILITY IN WATER: N/A

7.4 FIRE AND EXPLOSION DATA FLASH POINT: N/A FLAMMABLE LIMITS: LEL: N/A

UEL: N/A

EXTINGUISHING MEDIA: Water, Dry Chemical or Foam

SPECIAL FIRE FIGHTING PROCEDURES: If water is used, take precautions against steam burns. Certain sizes and types of this product will float on water and spread the fire. Carbon monoxide, carbon dioxide, and sulfur dioxide are emitted during burning. Self-contained breathing equipment must be used for firefighting. UNUSUAL FIRE AND EXPLOSION HAZARDS: Dust is combustible. Dust usually does not ignite if the ignition source is under 968 degrees F. Certain concentrations of dust could pose an explosion hazard in a high heat and rich oxygen atmosphere. Minimize dust during handling and processing. Do not smoke while handling the product.

7.5 REACTIVITY DATA STABILITY: Stable INCOMPATIBILITY:(Materials to Avoid) CONDITIONS TO AVOID: Stable under normal conditions. Avoid fire and flame and high HAZARDOUS DECOMPOSITION BYPRODUCTS: Combustion may produce carbon monoxide and sulfur dioxide. ____________________________________________________________________________

Page 30: Leopold® Engineered Filter Media® Products (Gravel, Sand

MATERIAL SAFETY DATA SHEETS

Leopold® Engineered Filter Media® Products

7.6 HMIS RATING HAZARD RATING:

0 = Minimal Hazard FLAMABILITY HAZARD RATING = 1 1 = Slight Hazard REACTIVITY HAZARD RATING = 0 2 = Moderate Hazard PERSONAL PROTECTION INDEX = G 3 = Serious Hazard (Goggles, gloves, dust mask) 4 = Severe Hazard

____________________________________________________________________________

7.7 HEALTH HAZARD DATA POSSIBLE ROUTE OF EXPOSURE/ENTRY: Inhalation, Skin contact, Ingestion possible in high dust conditions.

POSSIBLE EFFECTS OF SHORT TERM OVEREXPOSURE: Eye, nose, throat, lung, skin irritation. Coughing.

FIRST AID FOR SHORT TERM EXPOSURE: Remove from dusty area, supply with clean fresh air. Drink water if ingested. Wash skin with mild soap and water if skin irritation occurs. Irrigate eyes with large amounts of sterile eye wash to remove dust particles. Obtain medical advice if any symptoms persist.

POSSIBLE EFFECTS OF LONG TERM EXPOSURE: Shortness of breath, emphysema, pneumoconiosis (anthracosilicosis anthracosis) pulmonary fibrosis, respiratory problems.

MEDICAL CONDITIONS WHICH COULD BE AGGRAVATED BY EXPOSURE: Asthma, Emphysema, and other respiratory conditions.

CARCINOGENICITY: Product may contain minute amounts of crystalline silica (quartz) which is a human carcinogen per IARC Monographs Vol. 68, 1997.

7.8 CONDITIONS FOR SAFE USE RESPIRATORY PROTECTION: Use MSHA, OSHA, NOISH approved respirable dust mask

EYE PROTECTION: Approved close fitting safety glasses

PROTECTIVE GLOVES: Conventional work gloves

PROTECTIVE CLOTHING: If possible wear clothing with snug fitting neck, arm and leg openings. Remove dust impregnated clothing and launder before reuse.

VENTILATION: Exhaust to dust collector. Ventilate to maintain dust level below ACGIH – TLV. Avoid breathing dust.

DUST: To lower fire hazard, minimize dust generation during transfer, handling, or processing. Do not allow dust to accumulate. Floors become slippery from dust. Exercise caution where dust contact with electrical circuitry is possible. Dust in electrical boxes could explode. This product could be a good conductor of electricity.

AVOID EXCESSIVE DUSTING: DO NOT STORE NEAR FIRE OR HIGH HEAT. STORE AWAY FROM OXIDIZERS.

Page 31: Leopold® Engineered Filter Media® Products (Gravel, Sand

MATERIAL SAFETY DATA SHEETS

Leopold® Engineered Filter Media® Products

____________________________________________________________________________

7.9 SPILL OR LEAK PROCEDURES IN CASE OF SPILL: Contain spill to smallest area possible. Sweep product and recover as much as possible by shovel or mechanical means and recycle. Avoid creating excess dust. Use vacuum to clean up the remainder. Do not breathe dust. Non-recyclable product should be placed in proper containers and disposed of in accordance with local, state, and federal law. This product is disposed of as a combustible solid.

7.10 TRANSPORTATION INFORMATION DOT SHIPPING NAMES: Not Regulated HAZARD CLASS OR DIVISION: None

LABEL(S) REQUIRED: None IDENTIFICATION NO: None

SPECIAL PROVISIONS: None QUANTITY LIMITATIONS: None

The information in this MSDS was obtained from sources which we believe to be reliable. This information is provided without any warranty regarding its correctness and is supplied for informational purposes only.

THE MANUFACTURER MAKES NO WARRANTY, ASSUMES NO RESPONSIBILITY AND DISCLAIMS ALL LIABILITY FOR LOSS, DAMAGE OR EXPENSE ARISING OUT OF THE HANDLING, STORAGE, USE OR DISPOSAL OF THE PRODUCT.

Page 32: Leopold® Engineered Filter Media® Products (Gravel, Sand

BED DIAGRAM AND MEDIA DESCRIPTION

Leopold® Engineered Filter Media® Products

8 BED DIAGRAM AND MEDIA DESCRIPTION

Page 33: Leopold® Engineered Filter Media® Products (Gravel, Sand

PRODUCT DATA

Leopold® Engineered Filter Media® Products

9 PRODUCT DATA

Page 34: Leopold® Engineered Filter Media® Products (Gravel, Sand

PRODUCT DATA

Leopold® Engineered Filter Media® Products

Xylem │’zīləm│ 1) The tissue in plants that brings water upward from the roots

2) A leading global water technology company

We’re 12,500 people unified in a common purpose: creating innovative solutions to meet our world’s water needs. Developing new technologies that will improve the way water is used, conserved, and re-used in the future is central to our work. We move, treat, analyze, and return water to the environment, and we help people use water efficiently, in their home, building, factories and farms. In more than 150 countries, we have strong, long-standing relationships with customers who know us for our powerful combination of leading product brands and applications expertise, based by a legacy of innovation.

For more information on how Xylem can help you, go to xyleminc.com

Xylem Inc 227 South Division Street Zelienople, PA 16063 USA Tel. +1.724.452.6300 Fax +1.724.452.1377 www.xylem.com

Visit our Web site for the latest version of this document and more information The original instruction is in English. All non-English instructions are translation of the original instruction. ©2011 Xylem Inc