mm FLOU RATE = m 100 GPH; HAX 125 GPH PACKING: PLASTIC i

BERK'S SAND FITAIR STRIPPER PACKED COLUMN PRELIMINARY DESIGN35X DESIGN SUBKITIALSUMMARY SHEET

The coBputer sodel AIRSTRIP version 1,2 which uses the QNBA correlations,U3s utilised for G of the 8 parameters to »odel the relationship betweeninfluent/effluent concentrations, flow rates, packing height, colusndiaseter, temperature, air/water ratio, pressure drop, and packing type.

The following assumptions where used in evaluating the cclusm design:

I. CCNIAHINAN; INELUENT/EEELUENT CONCENTRATION CRITERIA <ppb)PARAMETER IKELUENT EEELUENT GOAL

1,1,1-Trichloroethsne (TCA) 8,000 80l.i-Bichioroethene (DCE! 1,000 2.81,1-Bichloroethane (ICA) 50 2SOTetrachloroethene (PCE) 50 4.11,2-Bichlorosthane 250 1Toluene 50 6

II. COLIM LOADINGSmm FLOU RATE = m 100 GPH; HAX 125 GPHIEHPERAIURE 10 C - 12 CAIR/BAIER RATIO = 45 ("752 cfa AIR)

III. CDLUHN SIZE AKD PACKINGCGLUK^ DIAHEIEE = 7 ftPACKING HEIGH! = 16 ft *PACKING: PLASTIC i INCH NOR-PAC

* Packing height was liaited by the constraints of the building sise.Two typical cclucn sections of 8 ft and 10-12 ft additional height forbottoss reservior, packing support, access manholes, liquid destributor,desister, and other parts of top and base of the column bring the towerto an approximate height of 28 ft.

IV. Several calculations were perforsed with the computer eodel todetermine the relationships between the loadings, concentrations,teeperature, and colusn sizing in order to detersiine the optiauKcoluisn sise for the above assumptions. The results of some of theseruns are shown in the attached plots.

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******* A N A L Y S I S OF S T R I P P I N G T O W E R *******

PROJECT : BERK'S SAND PIT 35* DESIGN SUBMITTAL DATE : G/23/1938

ENGINEER : AJS PflGE : 1/2

PHYSICAL CONSTANTS

Design temperatureDensity of waterDensity of airViscosity of waterViscosity of airSurface tension of waterAtmospheric pressure

50.8 degrees F.62.4 lb/ft-*3

0.9778 lb/ftA38.88E-84 Ib/ft.s1.16E-85 Ib/ft.s

74 dyne/c»1.M at-

CONTAMINANT PROPERTIES

Naite : 1,1,1-TrichloroethaneMolecular weight : 133.A g/trolBoiling point : 165 degrees F.Molal volunre at boiling point : 8.1145 L/wolHenry's Constant : 8.56888Tenperature Constant : 1636 deg KMolecular diffusivity in air : 8.35E-«5 ftA2/sMolecular diffusivity in water s 6.39E-83 ft"2/s

PACKING PROPERTIES

Name : Nor-PacPacking Material : PlasticNominal Size s l.W inchSpecific Area : 54.9 ftA£/ft"3Critical surface tension s , 33 dyne/eraPacking depth s 16.8 ftflir friction factor : 25

flIRSTRIP Ver. 1.2 (C) 1988 3289 Garner Amrecycled paper

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PROJECT s BERK'S SAND PIT 35* DESIGN SUBMITTAL DflTE : 6/23/1998

ENGINEER s AJS PAGE : 2/2

LOADING RATES

Water nas!> loading rateAir Mass loading rateWater volumetric loading rateflir volumetric loading rateflir pressure gradientVoluuetrk; air/water ratioStripping factor

A.52E-«1 lb/ft"2.s *2.54E-«2 lb/ftA2.s *3.25E+88 gp»/ftA2 *1.46E+82 gpw/ftA2 *{.85 • H20/ft I45.816.6

MASS TRANSFER PARftMETERS

Percentage of packing area wettedWetted packing areaTransfer rate constant in waterTransfer rate constant in airOverall transfer rate constantOverall Mass transfer coefficientNTUHTU

27.6 %15.1 ftA2/ftA3

1.61E-84 ft/s2.98E-82 ft/51.58E-84 ft/s2.4K-83 1/55.24833.8483 ft

CONTAMINANT REMOVAL

Influent concentration : 8.88 wg/LEffluent concentration : 5.42E+81 ug/LFraction removed : 99.3 %Mass of contaminant removed : 3.18E-«1 lb/ftA2.dayConcentration in airstrean : 4.64E-81 »g/ftA2.ft"3

* Expressed per unit of stripping tower cross-secticnal areaf Expressed per unit of tower length

AIRSTRIP Ver. 1.2 (C) 1988 3289 Garner A«es, Iwa 5W18recycled paper ~ - -

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PROJECT : BERK'S SAND PIT 35* DESIGN SUBMITTflL DfiTE : 6/23/1998

ENGIf€ER : AJS PAGE : 1/2

PHYSICAL CONSTANTS


58.8 degrees F.62.4 lb/ftA3


74 dyne/cm1.88 atm


NameMolecular weightBoiling pointMolal voluue at boiling pointHenry's ConstantTemperature ConstantMolecular diffusivity in airMolecular diffusivity in water

1,1-Dichloroethylene97.8 g/i»ol99 degrees F.

8.8S62 L/i»ol1.48888

1984 deg K9.85E-85 ftA2/s7.58E-49 ftA2/s

PACKING PROPERTIES

NamePacking MaterialNominal SizeSpecific AreaCritical surface tensionPacking depthAir friction factor

Nor-PacPlastic1.88 inch54.9 ftA2/ftA333 dyne/en

16.8 ft25

AIRSTRIP Ver. 1.2 (C) 1988 3289 Gamer ABBS, Iowa 5881Precycled paper ,.,,„,

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******* ft N ft L Y S I S OF S T R I P P I N G T O W E R *******

PROJECT : BERK'S SAND PIT 35* DESIGN SUBMITTAL DflTE : 6/23/1998

ENGINEER ; AJS PAGE : 2/2

LOADING RATES

Water Mass loading rateAir mass loading rateWater volumetric loading rateAir volumetric loading rateAir pressure gradientVolumetric air/water ratioStripping factor

4.52E-81 lb/ftA2.s «•2.54E-82 lb/ftA2.s *3.25E+88 gp»/ftA2 *1.46E+82 gp«/ftA2 *(.06 ' H20/ft t45.838.5

MASS TRANSFER PARAMETERS

Percentage of packing area wettedWetted packing areaTransfer rate constant in waterTransfer rate constant in airOverall transfer rate constantOverall mass transfer coefficientNTU

27.6 %15.1 ftA2/ftA3

1.75E-84 ft/s3.33E-82 ft/s1.74E-84 ft/s2.63E-83 1/s5.7938

HTU : 2.7616 ft

CONTAMINANT REMGVftL

Influent concentration : 1.88 wg/LEffluent concentration : 3.45E+88 ug/LFraction removed : 99.7 *Mass of contaminant rewoved : 3.89E-82 lb/ftA2.dayConcentration in airstream : , 5.82E-82 mg/ft"2.ftA3

Expressed per unit of stripping tower cross-sectional areaExpressed per unit of tower length

AIRSTRIP Ver. 1.2 <C) 1988 3289 Garner Ames, Iowa 5801?recycled paper w,,l,,s> - - - ^

***** Ecology and Environnent, Inc. ***** ft R 3 0 | If li 6


PROJECT : BERK'S SAND PIT 35* DESIGN SUBMITTAL DATE : 6/23/1998

ENGINEER : AJS PAGE : 1/2

PHYSICAL CONSTANTS


58.8 degrees F.52.4 lb/ft'3


74 dyne/cm1.88 atm


NameMolecular weightBoiling pointMolal volume at boiling pointHenry's ConstantTemperature ConstantMolecular diffusivity in airMolecular diffusivity in water

1,1-Dichloroethane99.8 g/mol135 degrees F.

8.8336 L/nol8.22888

1899 deg K9.48E-85 ftA2/s7.21E-89 ftA2/s

PACKING PROPERTIES


Nor-PacPlastic1.88 inch54.9 ftA2/ftA333 dyne/cm

16.8 ft25

AIRSTRIP Ver. 1.2 fC) 1988 3289 Garner Ames, Iowa 56810recycled paper (l(,(

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LOADING RATES

Water mass loading rateAir wass loading rateWater volumetric loading rateAir volumetric loading rateAir pressure gradientVolumetric air/water ratioStripping factor

4.52E-81 lb/ftA2.s *2.54E-82 lb/ftA2.s *3.25E+88 gp«/ftA2 *1.46E+82 gpw/ftA2 *<.86 " H20/ft »45.86.1


Percentage of packing area wettedWetted packing areaTransfer rate constant in waterTransfer rate constant in airOverall transfer rate constantOverall mass transfer coefficientNTUHTU

27.6 %15.1 ftA2/ftA3

1.71E-84 ft/s3.23E-02 ft/s1.64E-8.4 ft/s2.49E-83 1/s5.36812.9850 ft

CONTAMINANT REMOVfiL

Influent concentration : 5.KG+81 ug/LEffluent concentration : 4.74E-81 ug/LFraction removed : 99.1 *Mass of contaminant removed : 1.93E-83 lb/ftA2.dayConcentration in airstream s 2.89E-83 mg/ftA2.ftA3

* Expressed per unit of stripping tower cross-sectional areaI Expressed per unit of tower length

AIRSTRIP Ver. 1.2 (C) 1968 3289 Garner A»es, Iowa 50818

recycled paper ***** Ecology and Environment, Inc. ***** coolo^ and



ENGI(£ER : AJS PAGE : 1/2

PHYSICAL CONSTANTS




74 dyne/cm1.00 atm


Na»eMolecular weightBoiling pointMolal volume at boiling pointHenry's ConstantTemperature ConstantMolecular diffusivity in airMolecular diffusivity in water

Tet rach1oroethy1ere165.8 g/wol258 degrees F.

8.1288 L/mol8.59888

1882 deg K7.64E-85 ftA2/s5.98E-89 ftA2/s

PACKING PROPERTIES

Na»e : Nor-PacPacking Material : PlasticNominal Size s 1.88 inchSpecific Area : 54.9 ftA2/ftA3Critical surface tension : 33 dyne/cmPacking depth : 16.8 ftAir friction factor : 25

AIRSTRIP Ver. 1.2 (C) 1988 3289 Garner Ares, lorn 50018recycled paper wnloi

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******* ft N A L Y S I S OF . S T R I P P I N G T O W E R *******

PROJECT : BERK'S SAND PIT 35* DESIGN SUBMITTftL DATE : 6/23/1998

ENGINEER : flJS PAGE : 2/2

LOADING RATES

Water mass loading rateAir mass loading rateWater volumetric loading rateAir volumetric loading rateAir pressure gradientVolumetric air/water ratioStripping factor

4.52E-81 lb/ftA2.s *2.54E-82 lb/ftA2.s *3.25E+08 gpn/ftA2 *1.46E+82 gp»/ftA2 *(.06 • H20/ft I45.816.7



27.6 *15.1 ftA2/ftA3

1.55E-84 ft/s2.81E-02 ft/s1.53E-04 ft/s2.32E-83 1/s5.87413.1533 ft

CONTAMINANT REMOVAL

Influent concentration : 5.00E+81 ug/LEffluent concentration : 3.99E-81 ug/LFraction removed : 99.2 *Mass of contaminant renoved : 1.93E-83 lb/ft"2.dayConcentration in airstream : 2.90E-83 ng/ftA2.ftA3


AIRSTRIP Ver. 1.2 <C> 1938 3289 Garner A»es, Iowa 50818

recycled paper ***** Ecology and Environnent, Inc. ***** coolopj


PROJECT : BERK'S SAND PIT 35* DESIGN SUBHITTAL DATE : 6/23/1958

ENGIteER : AJS PAGE : 1/2

PHYSICAL CONSTANTS




74 dyne/cm1.88 atm


Name : 1,2-DichloroethaneMolecular weightBoiling pointMolal volume at boiling pointHenry's ConstantTemperature ConstantMolecular diffusivity in airMolecular diffusivity in water

99.8 g/nol183 degrees F.

8.8936 L/mol8.85988

1828 deg K9.25E-85 ftA2/s7.21E-89 ftA2/s

PACKING PROPERTIES


Nor-PacPlastic1.88 inch54.9 ftA2/ftA333 dyne/cw

16.0 ft25

recycledpflfcrojp Ver> L2 (C)ig88 3289 Garner

Ecology arid Environment, Inc. *****



ENGINEER : OJS PAGE : 2/2 •

LOADING ROTES

Water mass loading rate : 4.52E-81 lb/ft"2.s *Air mass loading rate : 2.54E-82 lb/ft*2.s *Water volumetric loading rate s 3.25E+88 gpis/ftA2 *Air volumetric loading rate : 1.46E+82 gpm/ft'2 *Air pressure gradient : (.86 • H20/ft IVolumetric air/water ratio : 45.8Stripping factor s 1.7



27.6 *15.1 ftA2/ft-'

1.71E-84 ft/53.19E-82 ft/s1.49E-84 ft/s2.26E-83 1/s4.53293.5297 ft

CONTAMINANT REMOVAL

Influent concentration : 2.58E*82 ug/LEffluent corcentration : 1.75E+81 ug/LFraction removed : 93.8 *Mass of contaminant removed : 3.87E-83 lb/ft"2.dayConcentration in airstream : 1.36E-82 mg/ftA2.ftA3

* Expressed per unit of stripping tower cross-sectional areat Expressed per unit of tower length

recycled paper ef tt - -. ; - - -AIRSTRIP Ver. 1.2 (C) 1988 3289 Gamer Aues, Iowa 5W ft R Q ft 1 fi




PHYSICAL CONSTANTS


58.8 degrees f.62.4 lb/ftA3


74 dyne/cm1.88 at*



.Toluerte92.2 g/mol232 degrees

8.1162 L/wol8.19808

3517 deg K8.37E-85 ftA2/s6.27E-89 ftA2/s

PACKING PROPERTIES


Nor-PacPlastic1.80 inch54.9 f33 dyne/cm

15.8 ft25

recycled paper mJoi:AIRSTRIP Ver. 1.2 (C) 1988 3289 Gamer ftmes, ImaJpffi 3 Q I 5 3


PROJECT : BERK'S SflND PIT 35* DESIGN SUBMITTAL DflTE : 6/23/1990


LOADING RATES

Water mass loading rateAir mass loading rateWater volumetric loading rateAir volumetric loading rateAir pressure gradientVolumetric air/water ratioStripping factor

4.52E-81 lb/ftA2.s *2.54E-02 lb/ft''2.s ' *3.25E<-88 gpm/ftA2 *1.46E+82 gpr8/ftA2 *(.86 " H20/ft I45.83.3



27.6 *15.1 ftA2/ft"3

1.59E-84 ft/s2.99E-82 ft/=1.48E-84 ft/s2.25E-83 1/s4.78393.3445 ft

CONTAMINANT REMOVAL

Influent concentration : 5.8PE+-81 ug/LEffluent concentration : 1.26E+88 ug/LFraction removed : 97.5 *Mass of contaminant removed : 1.98E-83 lb/ftA2.dayConcentration in airstream : 2.85E-83 mg/ft*2.ftA3


AIRSTRIP Ver. 1.2 <C) 1988 3289 Garner Aiies, Iowa 58818recycled paper wolopj ami

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PROJECT : BERK'S SAND PIT 35* DESIGN SUPMITTfiL CflfE : 6/23/199C

ENGINEER >. AJS FflOE : 1/2

PHYSICAL CONSTANTS



8.8778 lb/ft"38.88E-84 Ib/ft.s1.16E-85 Ib/ft.s

74 dyne/en1.88 atn



1,1,1-Trichloroethane133.4 g/mol155 degrees F.

8.1145 L/mol8.56888

1635 deg K8.35E-85 ft "2/56.39E-83 ftA2/s

PACKING PROPERTIES

NamePacking MaterialNoninal SizeSpecific AreaCritical surface tensionPacking depthAir friction factor

Nor-PacPlastic1.08 inch54.9 ft"2/ft"333 dyne/cm

16.8 ft

Ver. 1.2 (C) 1988 3289 Gar wr toes, . nOHR n o u 1




ENGINEER : AJS TOE : 2/2

LOADING RflTES

Water mass loading rateAir mass loading rateWater volumetric loading rateAir volumetric loading rateflir pressure gradientVolunetric air/water ratioStripping factor

3.62E-81 lb/ftA2.s *2.83E-82 lb/ftA2.E *2.68E4-08 gpw/ftA2 *1.17E+82 gpw/ftA2 *(.86 ' H20/ft I45.816.6


Percentage of packing area wetted : 25.6 *Wetted packing areaTransfer rate constant in waterTransfer rate constant in airOverall transfer rate constantOverall mass transfer coefficientNTUHTU

14.8 ft*2/ftA31.46E-84 ft/s2.55E-82 ft/s1.43E-84 ft/s2.81E-83 1/s5.58482.9066 ft

CONTAMINANT REMOVAL

Influent concentration : 8.88 «ig/LEffluent concentration : 4.26E+81 ug/LFraction removed : 99.5 *Mass of contaminant removed : 2.48E-81 lb/ftA2.dayConcentration in airstream : 4.65E-81 mg/ftA2.ftA3

Expressed per unit of stripping tower cross-sectional areaExpressed per unit of tower length

recycled SIP" >'2 <C) 1338 ™ Gamer «** I««,3»« „„„ „ „ = ...

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PHYSICAL CONSTANTS

Design teiaperatureDensity of waterDensity of airViscosity of waterViscosity of airSurface tension of waterAtmospheric pressure



74 dyne/cm1.88 at«



1,1-Dichloroethylene97.8 g/mol99 degrees F.

8.8852 L/Mol1.40888

1984 deg K9.85E-85 ftA2/s7.58E-89 ftA2/s

PACKING PROPERTIES

NanePacking MaterialNominal SizeSpecific AreaCritical surface tensionPacking depthAir friction factor

Nor-PacPlastic1.80 inch54.9 ftA2/ft*333 dyne/cm

16.0 ft25

recycled pfti*STRIP Ver. 1.2 (C) 1988 3289 Garr.er toes, lowa-SeaW&R 3 0 1457

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PROJECT : BERK'S SAND PIT 35* DESIGN SUEMITTAL DATE : 6/23/1998


LOADING RATES

Water mass loading rateflir mass loading rateWater volumetric loading rateAir volumetric loading rateflir pressure gradientVolumetric air/water ratioStripping factor

3.62E-81 lb/ftA2.s *2.83E-82 lb/ftA2.s *2.68E+88 gpm/ftA2 *1.17E+82 gpw/ft-A2 *(.06 p H20/ft I45.838.5


Percentage of packing area wetted : 25.6 *Wetted packing areaTransfer rate constant in waterTransfer rate constant in airOverall transfer rate constantOverall mass transfer coefficientNTUHTU

14.8 ft"2/ftA31.59E-84 ft/s2.85E-02 ft/51.57E-84 ft/s2.21E-83 1/s6.88112.6311 ft

CONTAMINANT REMOVAL

Influent concentration : 1.88 ng/LEffluent concentration : 2.61E+88 ug/LFraction removed : 93.7 *Mass of contaminant removed : 3. HE-82 lb/ftA2. dayConcentration in airstream : 5.83E-82 mg/ftA2. ftA3

* Expressed per unit of stripping tower cross-sectional areat Expressed per unit of tower length

recycled paper wolo^

AIRSTRIP Ver. 1.2 (C) 19S8 3289 Garner toes, Io«a 58818


PROJECT : BERK'S SAND PIT 35* DESIGN SUBMITTAL DATE s 6/23/1990

ENGINEER : AJS ' PAGE : 1/2

PHYSICAL CONSTANTS

Design temperature : 58.8 degrees F.Density of water : 62.4 lb/ft"3Density of air : 8.8778 lfa/ftA3Viscosity of water : 8.88E-84 Ib/ft.sViscosity of air : 1.16E-85 Ib/ft.sSurface tension of water : 74 dyne/cmAtmospheric pressure : 1.88 atm


Na«eMolecular weightBoiling pointMoial volume at boiling pointHenry's ConstantTemperature ConstantMolecular diffusivity in airMolecular diffusivity in water

1,2-Dichloroetharie99.0 g/Mol183 degrees F.

8.8936 L/Mol8.05988

1820 deg K9.25E-85 ftA2/s7.21E-89 ftA2/s

PACKING PROPERTIES

NamePacking MaterialNcwinal SizeSpecific AreaCritical surface tensionPacking depthAir friction factor

Nor-PacPlastic1.08 inch54.9 ftA2/ftA333 dyne/cm

16.8 ft25

AIRSTRIP Ver. 1.2 (C) 1988 3289 Garner ftoes, Iowa 50810 . recycled paper woiofrw1 W(f-fn< "n j I Kn

***** Ecology and. Environment, Inc. *****


PROJECT : BERK'S SAND PIT 35* DESIGN SUPMITTAL DATE : 6/23/1998

ENGINEER : AJS PflGE : 2/2

LOADING RATES

Water Bass loading rateAir mass loading rateWater volumetric loading rateAir volumetric loading rateAir pressure gradientVolumetric air/water ratioStripping factor

3.62E-01 lb/ftA2.s *2.83E-82 lb/ftA2.s *2.68E+88 gpm/ftA2 *1.17E+02 gpm/ftA2 *(.86 " H20/ft I45.81.7


Percentage of packing area wettedWetted packing areaTransfer rate constant in waterTransfer rate constant in airOverall transfer rate constantOverall «ass transfer coefficientNTU

25.6*14.0 ftA2/ftA3

1.55E-04 ft/52.73E-02 ft/s1.34E-84 ft/s1.86E-83 1/s

4.7849HTU : 3.4887 ft

CONTAMINANT REMOVAL

Influent concentration : 2;58E+02 ug/LEffluent concentration : 1.62E<-81 ug/LFraction removed : 93,5 *Mass of contaminant removed : 7.29E-83 lb/ftA2.dayConcentration in airstream : 1.37E-82 mg/ft"2.ftA3

* Expressed per unit of stripping tower cross-sectional areai Expressed per unit of tower length

recycled ItRJp-Ver. L2 (c) 1?fls 3289 Garner Ames, Iowa°5*(fft. ' "rt' " - : :AR30U60


Documents

mm FLOU RATE = m 100 GPH; HAX 125 GPH PACKING: PLASTIC i