Study on the treatment of development wastewater from PCB production

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  • Chemistry Department, Tongji University, Shanghai 200433, China

Received date: 2005-06-16

  Online published: 2010-10-01

Abstract

The development wastewater from PCB production is complex and difficult to be degraded and contains organic substances with high concentration. The combined processing method of acidified demulsification - micro electrolysis of iron and carbon - neutralized sedimentation - SBR is used for treating this kind of wastewater. And the optimal technological conditions are ascertained by experiments. The pH value of acidified demulsification is 3 - 4; VFe ∶VC is 1 ∶1 in the Fe /C column, and the reaction time of micro electrolysis is 45 min; then the effluent is neutralized by Ca(OH)2 solution to pH 7 - 8; in SBR reaction, 12 h per cycle and the optimal reaction time is 8 h. After the whole treatment, the CODCr of the inlet water is reduced from 11 000 mg/L to 400 mg/L and the total CODCr removal rate reaches about 96%.

Cite this article

Bao Xuping, Li Yijiu . Study on the treatment of development wastewater from PCB production[J]. Industrial Water Treatment, 2005 , 25(11) : 22 -24 . DOI: 10.11894/1005-829x.2005.25(11).22

References

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