Build a New Biological Treatment Laboratory System to Reduce Pollution of Some Inorganic and Organic Pollutants in Industrial Wastewater

احمد, علي شهاب; يوسف, سامره يونس

doi:10.30684/etj.28.9.15

	Build a New Biological Treatment Laboratory System to Reduce Pollution of Some Inorganic and Organic Pollutants in Industrial Wastewater
Engineering and Technology Journal
Article 1, Volume 28, Issue 9, 2010, Pages 420-433 PDF (266.53 K)
DOI: 10.30684/etj.28.9.15
Authors
علي شهاب احمد; سامره يونس يوسف
Abstract
Instruction and implementation of a new laboratory biological treatment system -unit . The complete removing was achieved after 7 days . The hydraulic were achieved to reduce the pollution of industrial wastewater of artificial fertilizers company with some inorganic pollutants ( NH4 + , NO2 - , NO3 - AND SO4 2- ) and organic ( Biological Oxygen Demand , BOD5 ; urea and Total Suspended Solids ,TSS ). The modified culture media ,by me , were used to optimize the specific variables related to this study . Immobilized technique was used in all units of biological system that consists of Mixo- unit with non discrete spaces, Denitrifying and Sulfate reducing units . The mixo-unit was operated by Fed- batch technique of the whole volume meanwhile the other units by batch technique . In laboratory artificial medium (ND- A ) the primary concentration of ammonium and sulfate were 1300 mg / l and 3800 mg / l and reduced to 50% and 45% respectively in Mixoretention time required to reduce 500 and 1300 mg / l of ammonium and sulfate respectively in fed- batch culture was 40 hr . The retention time of fed- batch became stable at a range of 25 -26 hr in removing the same concentrations and not across the environmental limitations of NO2 - , NO3 - , in addition to reduce the BOD to the allowable concentration . The ammonium , nitrite and nitrate were reduced after 4 and 3 days for pretreated and disposed treated wastewater respectively using Mixo- unit and batch technique . Nitrate was removed by concentration of 500 mg / l in denitrifying unit using the modified medium ( O3a – A) . The sulfate was removed in modified medium ( C- medium) by concentration of 2129 mg / l during 3 days using batch technique and anaerobic conditions.

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