会议专题

A Field Pilot Study on Improving Biodegradability of Heavy oil Wastewater by UASB

  A field pilot study has been constructed in the Liaohe oilfield,China to treat heavy oil wastewater with large amounts of dissolved recalcitrant organic compounds and low nutrient of nitrogen and phosphorus for improving it”s biodegradability by a upflow anaerobic sludge blanket (UASB).By operating the system for 252 days (including the start-up of 139 days),BOD5/COD ratio of the water increased from 0.176 to 0.252,the biodegradability improved obviously/remarkable,and the COD removal rate was 30.71%.Gas chromatography/mass spectrometry (GC/MS) was used to analyze the components of main organic surfactants indicating that the heavy oil wastewater contained 8 organic compounds are not the typical alkanes hydrocarbons but high molecular surfactants.After biodegradation 6 organic compounds were degraded,and 5 new organic compounds appeared,it maybe the degradation intermediates of some organic compounds.It indicates that the present biodegradation system is particularly effective at degrading large molecular organic substances but not for 2,2”-methylenebis”6-(1,1-dimethylethyl)-4-methyl-Phenol and partly for Bis(2-ethylhexyl) phthalate.Environmental Scanning electron microscope (ESEM) showed that large quantity of filamentous microorganisms were immobilized on observed carriers.The UASB reactor appeared to be a useful option for the improving degradability and COD removal of heavy oil wastewater in Liaohe oil field.

Heavy oil wastewater UASB COD GC/MS ESEM BOD5/COD

Kun TONG Yihe ZHANG Qihui SONG Jiacai XIE Fuchen LIU

School of Materials Science and Technology,China University of Geosciences,Beijing,China;Liaohe Petr School of Materials Science and Technology,China University of Geosciences,Beijing,China Liaohe Petroleum Exploration Bureau,Cnpc,Liaoning,Panjin,China

国内会议

第三届中国能源科学家论坛

北京

英文

1060-1065

2011-10-20(万方平台首次上网日期,不代表论文的发表时间)