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Chinese Journal of Applied Ecology ›› 2001, Vol. ›› Issue (3): 439-442.

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Preliminary study on anaerobic bioremediation process for pentachlorophenol (PCP)-contaminated soil

XU Xiangyang, FENG Xiaoshan   

  1. Depart.Environ.Eng., Zhejiang University, Hangzhou 310029
  • Received:2001-02-16 Revised:2001-03-20 Online:2001-05-25

Abstract: The performances of soil slurry process with supplement of anaerobic granular sludge for remediating PCP contaminated soil was investigated.The results showed that inherent anaerobic microbes in soil exhibited a little dechlorinating activity for simulative contaminated soil with 30mg穔g-1 of PCP,the average PCP degradation rates within 28 d was 0.258 mg穔g-1-1.In soil slurry processes with 5 g穔g-1 granular sludge at aerobic,aerobic /anaerobic and anaerobic operation,the average PCP degradation rates within 28 d were 0.269,0.291/0.842 and 0.892mg穔g-1-1,respectively. PCP degradation rates were increased with increasing the amounts of anaerobic granular sludge,0.834, 0.843,0.928mg穔g-1-1 of the average PCP degradation rates within 35 d were achieved in soil slurry processes supplemented with 5,10,25 g穔g-1 of granular sludge,respectively.This bioremediation process also presented higher initial PCP degradation rate for higher concentration(60mg穔g-1 ) of PCP in soil.

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