摘要
研究土壤泥浆反应器在投加厌氧颗粒污泥条件下修复PCP污染土壤的性能 .结果表明 ,对PCP浓度30mg·kg-1模拟污染土壤 ,其土壤泥浆中土著性厌氧微生物对PCP具有一定的还原脱氯降解活性 ,2 8d平均PCP降解速率为 0 .2 5 8mg·kg-1·d-1;投加 5 .0g·kg-1颗粒污泥的土壤泥浆反应器在好氧、好氧 厌氧、厌氧操作条件下 ,2 8d平均PCP降解速率为 0 .2 6 9、0 .2 91/0 .842、0 .892mg·kg-1·d-1.投加 5、10、2 5g·kg-1颗粒污泥的土壤泥浆反应器在厌氧条件下 ,35d平均PCP降解速率分别达到 0 .834、0 .843、0 .92 8mg·kg-1·d-1,PCP降解速率随颗粒污泥投加量的增加而增大 ;对PCP浓度 6 0mg·kg-1模拟污染土壤 ,投加颗粒污泥的泥浆反应器仍可获得相对较高的初始PCP降解速率 .
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·kg -1 of PCP,the average PCP degradation rates within 28 d was 0.258 mg·kg -1 ·d -1 .In soil slurry processes with 5 g·kg -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·kg -1 ·d -1 ,respectively. PCP degradation rates were increased with increasing the amounts of anaerobic granular sludge,0.834, 0.843 ,0.928mg·kg -1 ·d -1 of the average PCP degradation rates within 35 d were achieved in soil slurry processes supplemented with 5,10,25 g·kg -1 of granular sludge ,respectively.This bioremediation process also presented higher initial PCP degradation rate for higher concentration(60mg·kg -1 ) of PCP in soil.
出处
《应用生态学报》
CAS
CSCD
2001年第3期439-442,共4页
Chinese Journal of Applied Ecology
基金
国家自然科学基金!资助项目 (30 0 70 0 2 6)
