Deskins 2004 Overview Water Treatment - PERMIT STATUS TRACKING

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High Rate Thickening andDewatering Technology

High Rate Thickening andDewatering Technology

Patented: #5,683,583; #5,611,921; #5,660,733, #5,725,766; #5,770,056, #6,051,137

Alum Sludge

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The Deskins Quick-Dry De-watering System Is The First Patented Process to Integrate State of the Art Technologies to Make Thickening And De-watering on Granular Media an Efficient, Reliable, Predictable, and Cost Effective Process.

Enhanced Separation - To Expedite the Production of Dry Solids, It Is First Necessary to Chemically Induce Separation of the Solids From Water. The Deskins Process Employs a Unique Polymer Activation System With the Patented RapidFloc Mixer to Optimize Agglomeration and Floc Formation, Resulting in Processing Costs of Less Than $10.00 Per Ton of Dry Solids (TDS).

Enhanced Solids Capture - The Ultimate Goal of Any Solids Management Program Is the Removal of Solids From the Treatment Process. All Mechanical Methods of Dewatering Return 5-15% of the Treated Solids to the Head of the Plant. The Deskins Process Captures 99+% of the Solids.

Enhanced Drainage - The Deskins Quick-dry Filter Design, Which Incorporates Pre-saturation and the Deskins Quick-dry Drainage Panels, Enhances Drainage by Preventing Compaction of the Filter Media, by the Uniform Distribution of Solids Across the Surface of the Filter, and by the Natural Development of Vacuum Assisted Gravity Drainage Upon Release of the Impounded Saturation Water. Additionally, the Deskins Filter Design Reduces the Overall Depth of Filter Media Which Reduces the Volume of Water Required to Pre-saturate the Media, Shortens the Drainage Path, and Reduces the Volume of Retained Water in the Media.Enhanced Drying - The Rapid Drainage of Water From the Biosolids Results in the Dramatic Compression and Reduction of the Solids Layer Captured on the Surface of the Granular Media. Typically, the Layer of Solids Will Thoroughly Crack Within 2-4 Hours and Will Reach 18-24% Dryness Overnight. The Cracked Solids Layer More Effectively Absorbs the Sun’s Radiant Energy and Rapidly Transpires Entrapped Moisture.

The Aquatrac Series of Retrieving Machines Are the First Truly Efficient Means of Mechanically Collecting Solids From a Granular Media Filter. Aquatrac Models Are Selected Based on the Size and Configuration of the Filter Design.The Deskins Process Can Include an Optional Procedure for Developing “Class A” Solids Through Windrowing and Aeration. This Additional Step Will Increase the Process Costs by $3-5.00/TDS.

DESKINS PROCESS REVIEW

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• 18 years experience In dewatering technologies• Over 400 completed installations• 1500 polymer & dewatering projects• 7 US and foreign patents

Recognized as an efficientdewatering technology by:

Environmental Protection Agency (EPA)US Department of Agriculture (USDA)North Carolina State University (NCSU)Engineering Consultant FirmsWWTP Operating CompaniesPublic & Private Municipalities

Applications for:

MunicipalAgriculturalIndustrialFood Processing

The Deskins “Quick Dry” Filtration Processtm has the flexibility to work with nearly any form and content of flowable wastewater to provide controllable, programmable, and accurate liquid/solid separation

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We Saw The Problem !We Saw The Problem !

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21 Sand Drying Beds Plastic Block

Lagoons Decanting Beds

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Deskins Quick-Dry Dewatering Process is the first patented process to integrate state of the art technology to make thickening and de-watering on granular media an efficient, reliable, predictable, and cost effective process.

The Deskins Quick-Dry Process produces exceptionally dry solids through the controlled application of these important design factors

We Solved The Problem !We Solved The Problem !

Enhanced Separation

Enhanced Solids Capture

Enhanced Drainage

Enhanced Drying

Highest percent solids produced in dewatering industryUS patents: #5,683,583; #5,611,921; #5,660,733, #5,725,766; #5,770,056, #6,051,137

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RapidFloc Mixer A new type of in-line mixing-flocculating device used to enhance the chemically induced liquid-solids separation in the sludge dewatering process utilized at most wastewater treatment plants. The mixer is used in any type of mechanical dewatering scheme that uses a chemical as a coagulant or flocculent aid. Typically, polymers are fully activated prior to being injected into the solids slurry. The RapidFloc mixer performs the task of mixing the activated polymer solution with the solids slurry more rapidly and effectively. A cascading “waterfall” flow pattern with strategically positioned baffles and a recirculation line are the feature of this proven (patented) mixing technology. A RapidFloc Mixer provides a better polymer to sludge contact.

Enhanced SeparationEnhanced Separation

Patented: #5,683,583; #5,611,921; #5,660,733, #5,725,766; #5,770,056, #6,051,137

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Excellent Liquid – Solid SeparationFrom RapidFloc Mixer

Excellent Liquid – Solid SeparationFrom RapidFloc Mixer

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Deskins RapidFloc Mixer

Proven (Patented) Mixing Technology

Polymer Solution

Sludge

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Polymer activation includes an integrated equipment package to automatically meter, dilute, activate and feed liquid polymer and water. Concentrated polymer and water are blended in a completely back-mixed environment. The polymer activation process is flow paced with constant polymer solution feeding. Correct polymer determination occurs through sample analysis of wastewater from facility at start up and any time significant changes occur.

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Enhanced Solids CaptureEnhanced Solids Capture“Quick Dry” filters are constructed of a specific filter media for optimization of effluent (liquid) drainage from solids. The Deskins “quick-dry” filter design, which encompasses pre-saturation and the Deskins Quick-Dry Drainage Panels, enhance drainage by preventing compaction of the filter media, by uniform distribution of solids, and by the natural development of vacuum assisted drainage upon release of the impounded saturation water. The rapid drainage of water from the solids results in the dramatic compression and reduction of the solids layer captured on the surface of the filter. This layer more effectively absorbs radiant heat from the sun and transpires entrapped moisture (evaporation).

Sand Layer

Deskins Quick Dry Draining Panels

Discharge

Plant Water

Fill Line

18" (Typical) Thickening ZoneDried Cake Solids

Fine Filter Media

Large Filter MediaFilter Liner

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Enhanced Solids CaptureEnhanced Solids Capture

Enhanced Biosolids Capture & Maximum Effluent Drainage

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Enhanced DrainageEnhanced Drainage

The Deskins Filter Design Reduces The Overall Depth Of Filter Media Which Reduces The Volume Of Water Required To Pre-saturate The Media, Shortens The Drainage Path, And Reduces The Volume Of Retained Water In The Media. A natural vacuum occurs on discharge.

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Enhanced DryingEnhanced Drying

@

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@The Rapid Drainage Of Water From The Biosolids Results In The Dramatic Compression And Reduction Of The Biosolids Layer Captured On The Surface Of The Granular Media.

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@Typically, The Layer Of Biosolids Will Thoroughly Crack Within 2-4 Hours And Will Reach 18-24% Dryness Overnight At Relative Humidity Of <60%.

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Stackable Solids Achieved In Less Than 24 Hours

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Deskins “Typical” InstallationDeskins “Typical” InstallationOnly (8) Thickening/dewatering Filters allow for 45 MGD

RapidFloc Mixer

Deskins Filter · Level sensors · Automatic Valves · Thickening Zone

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Inline Thickening / DewateringInline Thickening / Dewatering

Plant thickeners can be eliminated using Deskins. A single filter is filled and drained several times with dilute solids. Thickening zone allows for concentration of solids prior to final dewatering.

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Loading FilterLoading Filter

Fill Line

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Level Sensors control Automatic Valves

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Retrieving CycleRetrieving Cycle

(5 Days)

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Retrieving CycleRetrieving Cycle

(5 Days)

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Deskins Water Plant ApplicationDeskins Water Plant Application

Iron hydroxide sludge thickened to 6 - 8%Liftable solids in 12 hours

Ogden, UTOgden, UT

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Deskins Water Plant ApplicationDeskins Water Plant Application

(5) days = 22% (21) days = 65%

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Booneville, MississippiRetrofit - Deskins “Quick Dry” Filter

Booneville, MississippiRetrofit - Deskins “Quick Dry” Filter

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Typical “Quick-Dry” System InstallationTypical “Quick-Dry” System Installation

Old Sand Beds

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Sand Layer

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Biosolids Management ProcessBiosolids Management Process

South Adams County, CO Water and Sanitation District

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Class A Biosolids Using DeskinsClass A Biosolids Using Deskins(Process & Time Schedule)

Process• Deskins Flocculation Process• Deskins “Quick Dry” Filter• AquaTrac Sludge Retriever• Agitated Air Drying (AAD)

Time Schedule

Filter LoadingSolids Drying on FilterSolids RetrievalSolids Aerated

Total 21 Days

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Class A BiosolidsClass A Biosolids

40% cake solids (average)from Deskins process

Rows turned (3) times daily(5) to (7) days

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Stockpiles are turned (3) to (5) times to achieve Class A sludge (1 hr. labor for each turn)

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Deskins air drying process - Class A biosolids (21) days (Start to finish)

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Biosolids Retrieval - AquaTracBiosolids Retrieval - AquaTrac“Work Horse”

Articulating Retriever

Bucket - View PortsSlotted Back & Bottom

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Biosolids Retrieval - AquaTracBiosolids Retrieval - AquaTrac

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Retrieval - Slow Sand Filter

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Why Choose Deskins?Why Choose Deskins?Application / Benefits

Low capital cost, new = Economical choice over construction or retrofit mechanical dewatering methodsLow operational cost = $6.00 - $10.00 dry ton

(Reduction in Hauling Cost)

Low maintenance = 1 1/2 in. Sand replacement / yr.Fast turnover cycle = 5 to 7 days (Midwest)

3 to 5 days (hot / dry)High solids production = 25 / 65 % (20 - 40% Volume

Reduction)Class A = “Backblend” compost using no

amendments (add $3.00 / ton)Solids Thickening – Water PlantSolids Dewatering – Wastewater & Water TreatmentRetrieval equipment for slow sand filters

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Deskins ClientsDeskins ClientsUSDA and NCSU consider The Deskins technology The “best first step” they know of for concentrated animal feeding operation nutrient management

98% Suspended Solids (TSS)98% Volatile Solids (TVS)89% Chemical Oxygen Demand (COD)62% Total Kjedahl Nitrogen (TKN)91% Organic Nitrogen66% Total Phosphorus93% Organic Phosphorus

M. Vanotti / USDAP. G. Hunt / USDA

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National and International Presentations of Deskins

National and International Presentations of Deskins

• Review of innovative biosolids procedure, Water Environmental Research Foundation by Albert B. Pincince, Phd, PE (Camp Dresser & Mckee, Inc.), Lynn H. Moss, P.E. and John F. Dononao, P.E. for presentation at the workshop – Biosolids Management – Innovative Treatment Technology and Processes at the Water Environmental Federation’s 70th Annual Conference, Chicago, 1997

• Review of Deskins by Russell J. Martin, P.E. Technical Support Section – Water Division Region 5 – USEPA – Chicago, IL

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• Water Environment Federation/American Waterworks/California Water Environment Association –Joint Residuals and Biosolids Management Conference, 2001 – Simple Effective, Low-cost and Innovative “Filtration” Dewatering System by Greg Fabisiak (South Adams County Water and Sanitation) Derald Meinike, P.E. and Dave Oerke, P.E. of RTW

• Biosolids and Residuals Fact Sheet (Deskins compared to conventional sand beds, freeze assisted drying beds, paved beds and reed beds) by USEPA Washington DC

• Technical Bulletin – Deskins Quick-Dry Filter Beds by Ross Fraser, P.E. Water Environment Systems Pty Ltd Terry Hills, Australia

National and International PresentationsNational and International Presentations

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National and International PresentationsNational and International Presentations• Biosolids Evaluation for the Prescott Valley Wastewater

Treatment Facility (Deskins verses other technology) Earth Tech TWM – Grand Rapids, MI

• Animal, Agriculture and Food Process Wastes – 2000 –ASAE Eighth International Symposium Advanced Treatment Systems for Liquid Swine Manure using Solid/Liquid Separation and Nutrient Removal Unit Process. The authors are Matias Vanotti, Soil Scientist, Stephen Howell, Environmental Engineer, and Patrick Hunt, Soil Scientist and Research Leader, USDA-ARS: Mark Rick, Extension Engineer, Dept. of Biological and Agric, Eng; and Frank Humenik, Professor of Agricultural Engineering & Program Coordinator, Animal Waste Management Programs, NC State Univ., NC 27695

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• 2002 ASAE Annual International Meeting/CIGR XVth World Congress Chicago, IL USA – Solids – Liquid Separation of Swine Manure with Polymer Treatment and Sand Filtration. The authors are Matias Vanotti, Soil Scientist, Stephen Howell, Environmental Engineer, and Patrick Hunt, Soil Scientist and Research Leader, USDA-ARS: Mark Rick, Extension Engineer, Dept. of Biological and Agric, Eng; and Frank Humenik, Professor of Agricultural Engineering & Program Coordinator, Animal Waste Management Programs, NC State Univ., NC 27695

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• 2002 Australia EPA Conference Sydney, Australia Biosolid Reduction and the Deskins Quick Dry Filter Bed – presented by: Anthony Evans, Supervisor South West Water Authority, Warranambool, Australia. Full scale evaluation of Deskins process was constructed at Warranambool and the process was reviewed under the direction of Mr. John Huff director of SWWA and Dave Angus of Montgomery Watson

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What Do USEPA & Clients Think Of Deskins ?

What Do USEPA & Clients Think Of Deskins ?

“Any consultant that does not consider The Deskins system when analyzing WWTP solids handling limitations is not providing his client with potentially the lowest cost alternative for solids removal”

Russel Martin, USEPARegion 4 - Chicago, Illinois

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Deskins ClientsDeskins ClientsEarth Tech has found that the Deskins Quick Dry filter beds In combination with air curing process will achieve Prescott Valley’s goals of properly handling all biosolids produced at the WWTP and providing a Class A biosolid for beneficial reuse throughout the community at the lowest cost. This is also deemed the most viable option when applicability, site constraints, public perception, odor, noise, and future growth are considered.

Earth Tech TWMGrand Rapids, MI

The Deskins process is based on principles of affordable technologies that exceed the performance outputs of other sludge drying techniques. The “Quick Dry” process provides a unique and inexpensive way to solve the old sludge drying bed problems. With simple and easy modifications of existing beds, old non-productive beds can be upgraded to excellent dewatering filters. The Deskins “Quick-Dry” filter bed system can be installed into new sewage and water treatment plant projects and expansions. It can also be installed cost effectively in existing sand drying beds. While the Deskins process is a suitable cost effective alternative process to conventional sand drying beds, it is also a highly cost effective solution when used instead of mechanical dewatering.

Ross Fraser, P.E.Sydney, Australia

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Deskins ClientsDeskins ClientsSimple, effective, low cost and innovative “filtration” dewatering system. “Deskins exceeds any manufacturer in project performance and service to the customer. It is refreshing to work with an equipment manufacturer that stands behind his equipment and is willing to donate extra time and money not included in his bid to make the system work better”

Dave Oerke, P.E.Roth Tamburini & WinsorDenver, CO

“When comparing the Deskins system to any other sludge dewatering system such as centrifuge and belt press, for the same volume of sludge, you will find no other system more economical or simpler to operate and easy to implement”

Wm Bart Hines, P.E.Carter BurgessFort Worth, TX

“Used Deskins and the performance has been great. I plan on using this process on as many of our projects as possible. Deskins gives me a competitive edge when bidding. We should buy the company”

John RickermanO.M.I. / CH2M HillDenver, CO

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Contact DeskinsContact Deskins

F. D. Deskins Company, Inc. 12554 Spire View Drive

Fishers, Indiana 46037

Phone: 765-724-7878 Email: [email protected]

www.deskinsinternational.com

Documents

Deskins 2004 Overview Water Treatment - PERMIT STATUS TRACKING