清潔劑工業(yè)廢水處理

1、Soap and detergent wastewater treatment Soaps and detergentsSoap 3,000BCDetergent World war IProductionRaw materials: fats and oils, The main sources of fats are beef and mutton tallow, while palm, coconut and palm kernel oils (pretreatment). Saponification, neutralization and glycerin recovery; Dry

2、ing-to make soap pellets; Amalgamator-soap pellets are blended together with fragrance, colorants andall other ingredients; Homogenization and refinery; Cut and stamped.ProductionSoap and detergent, SDAChemicals for soapChemicals for detergent manufactureChemicals for detergent manufactureChemical w

3、orks: soap and detergent manufacture works, DOE industry profileSoap wastewater characterHigh pH (12) High organic compounds e.g. oil, glycerol, readily to be subjected to biological treatmentRelatively high inorganic salts contentNaOH, Na2CO3Manufacture wastewater characterPigments, fatty acids, gl

4、ycerol, NaOH, Na2CO3ParametersValueCOD(mg/L)3350035600SS(mg/L)750880Color10001200pH1313.5Oil (mg/L)1100Case study-soap wastewaterCase study-soap wastewaterwastewaterRemoval of SOx, pH Industrial Boiler exhaust gas(high SOx content) Mix & recyclePretreatmentPhysical treatment(coagulation)Storage tank

5、Biological treatmentEffluentSludge treatmentsludgesludgeStorage tankMembraneSci Total Environ. 1987 Oct;66:203-12.Journal of Hunan University, 2002,29(4):103-107Case study-detergent wastewaterDetergent wastewaterHigh range COD : 240027600 mg/L;Biodegradable portion very low- not easily subjected to

6、biological treatment;Surfactant-MBAS(Methylene Blue Active Substance), especially LAS (linear alkylbenzene sulfonate). COD removal: chemical coagulation. Ferric chloride, alum, limeWar. Sci. Tech. Vol. 36. No. 2-3. pp. 377-381. 1997Case study-detergent wastewaterManufacture wastewater characterParam

7、etersValueCOD(mg/L)10000BOD5(mg/L)3000SS(mg/L)4700LAS(mg/L)400petroleum(mg/L)300Case study-detergent wastewaterCoarse screenCollecting basinFine screenRegulating reservoirChemical coagulationAir floating systemHydrolysis acidification pondBiological sediment pondContact oxidation pondThicken sludge Manufacture wastewatersCoarse solidsAirEffluentOdorsOdorsOdors Airhttp:/ study