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CHLOR ALKALI INDUSTRY Uğur KÜÇÜKBAYRAK Mesut Emrah ÖZTÜRK Nazenin GÜRE Sedat KEKEÇ. 1) Introduction. Koruma Industry K oruma Tarım E stablished in 1949 Derince chloralkali plant in 1963 Changed hand to Vefa İbrahim Araci in 1994 A ble to provid e, Chloralkali , A griculture ,
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CHLOR ALKALI INDUSTRYUğur KÜÇÜKBAYRAKMesut Emrah ÖZTÜRKNazenin GÜRESedat KEKEÇ
1) Introduction Koruma Industry KorumaTarım • Established in 1949 • Derincechloralkali plant in1963 • Changed hand to VefaİbrahimAraci in 1994 Able to provide, • Chloralkali, • Agriculture, • Transportation • Cleaning(products to clean) • Packaging • TourismFields • Environmental balance (with St. of ISO 14001.)
Koruma is the first company • Having EPKD electricity producer licence • Produces energy via natural gas in Derince Koruma’s Envioronment View • Using Energy efficient &Environmentally friendly technologies • Using scare sources Efficiently
1.1)Effluens from Koruma Industry Cloralkali Industry Wastewater Effluent Types • Domestic Wastewater • Industrial Wastewater Koruma Industry produce • Q (Domestic WW)= 70 m3 /d • Q (Industrial WW)= 120m3 /d.
1.2) Domestic Wastewater Treatment System Flow Diagram
1.3 Industrial Wastewater Treatment • It is consist of; • Coagulation by a rapid mix • Flocculation Tank • Sedimentation of Flocs • Effluent Discharge
Rapid Mixing • Ferric Chloride is added for floc formation • Polyelectrolyte for aid • Sulfide Chemical (presence of Cl-)
Flocculation • Floc Formation Takes Place • High HRT value for better contact time • Power is supplied by a slow mix
Sedimentation • Sedimentation is applied for settling of precipitates • Clear Effluent is collected from the surface by a single sided weir • Collected Effluent is sent to discharge point
Sludge Management • Sludges, collected from clarifiers, are managed seperately • Sand filters are used for sludge thickening • Thicken sludge is collected and disposed by IZAYDAS
Discharge • IWW and DWW effluents are collected and mixed at discharge point • pH is controlled by a pH meter
Effluent Parameters • Measurements of effluent are made for discharge standards • Discharged water characteristcs are proper for the standards
DesignCalculations • Therearetwotypes of treatmentprocesseswhichincludedomesticwastewaterandindustrialwastewater • Fordomesticwastewater ; • CircularAerationbasindimensions ; • diameter=6m • depth=6m
Circularsedimentation tank calculation • circularsedimentation tank dimensions; • diameter=3m • depth=2m • effluentlaunder=0.3m • Q=70m3/day = 0.00081m3/sec • HRT=Volume / Q =14.1 m3 / (70 m3/d x d/24 hr) = 4.83 hr
Onesidedweir is used in treatment • Weirlength = (D-2xeff.launder) x π = (3-0.6) x π = 7,54 m • Weirloading = Q / L = (70 m3/d) / (7.54m) = 9.28 m3 /m.d • Surfaceloadingcalculation; • A = = =7 m2 • Surfaceloading = Q / A =(70 m3/d) / 7 m2 =10 m3/ m2d
Forindustrialwastewater; • Q=120m3 / d = 0.014 m3/sec • Circularrapidmixingunitbasin; • Diameter=1 m • Depth=1m • Rectangularflocculationbasindimensions ; • Length=4.5m • Width=1.5m • Depth=2.5m
CircularSedimentationbasinDimension; • Diameter = 4.5m • Depth=3m • Eff.launder=0.5 m • Rapidmixingunitcalculation; • HRT= Volume / Q = (0.8 m3) / (120 m3/d x (d/24 hr) x( hr/ 60 min)) = 9.6 min
Flocculationunitcalculation; • Volume = Length x width x depth = 1.5 x 2.5 x 4.5 =16.875 m3 • HRT= Volume / Q = (16.875 m3) / (120 m3/d x (d/24 hr)) = 3.375 hr • SedimentationUnitcalculations; • HRT= Volume / Q = (47.7 m3) / (120 m3/d x (d/24 hr) )= 9.54 hr
References • http://circa.europa.eu/Public/irc/env/ippc_brefs/library?l=/bref_chlor_alkali • [Brien-White, 1995] • [Ullmann’s, 1996] • [Stenhammar] • [Kirk-Othmer,1991] • [Lindley,1997] • [Ullmann’s, 1996] • www.koruma.com • www.wikipedia.com