重金属离子对活性污泥处理污水的影响  

Effect of heavy metal ions on wastewater treatment with activated sludge

作　　者：霍培书[1] 管越强[2] 周可新[3] 刘标[3] 武建勇[3] 李季[1] 

机构地区：[1]中国农业大学资源与环境学院,北京100193 [2]河北大学生命科学学院,保定071002 [3]环境保护部南京环境科学研究所,南京210042

出　　处：《环境工程学报》2010年第10期2173-2178,共6页Chinese Journal of Environmental Engineering

基　　金：国家科技支撑计划课题(2007BAC03A08);环境保护部南京环境科学研究所中央级公益性科研院所基本科研业务费专项(87018);河北省自然科学基金项目(C2006000973);科技部"十一五"支撑计划项目(2006BAD10B09);2008粤港关键领域重点突破项目(2009205200031);广东省2008年省部产学研结合项目(2008A090400001);农业部公益性行业科研专项(200803033);Chinese University Scientific Fund(2009TD15)

摘　　要：研究了Hg2+、Cd2+、Pb2+3种金属离子对活性污泥系统处理污水效能的影响。通过对出水理化指标和生物指标的测定反映Hg2+、Cd2+、Pb2+对活性污泥系统运转效能的影响。结果表明:实验第4 d,Hg2+(0.3、0.4、0.5和0.6 mg/L),Cd2+(15、20、25和30 mg/L)和Pb2+(300、400、600和800 mg/L)各实验组出水的COD、SVI等均有显著影响。在实验中得出,对COD影响最为明显的为浓度600 mg/L和800 mg/L Pb2+实验组,在第4 d时,出水的COD去除率已经为零。锐利楯纤虫对Hg2+的浓度变化耐受力较强;点钟虫对Cd2+的浓度变化耐受力较强;杯钟虫对Cd2+的浓度变化耐受力较强。锐利楯纤虫对Pb2+和Cd2+的浓度变化较为敏感;点钟虫对Hg2+的浓度变化较为敏感;小口钟虫对Pb2+的浓度变化较为敏感。This research mainly focused on effect of Hg^2＋,Cd^2＋ and Pb^2＋ on the sewage treatment with activated sludge.And the effect would be reflected by outlet physicochemical index and biological index. The results showed that Hg^2＋（0.3、 0.4、 0.5 and 0.6 mg/L）,Cd^2＋（15、20、 25 and 30 mg/L、） and Pb^2＋（300、400、600 and 800 mg/L） in all experimental groups exert significant effect on COD and SVI on the fourth day.The removal rate of COD in groups of Pb^2＋ at 600 mg/L and 800 mg/L was zero on the fourth day.It could be inferred from the experiment that Aspidisca lynceus＇s ability to resist toxicity of Hg^2＋,Vorticella picta＇s ability to resist toxicity of Cd^2＋ and Vorticella cupifera＇s ability to survive toxicity of Cd^2＋ was good;Aspidisca lynceus was sensitive to concentration variation of Pb^2＋ and Cd^2＋;Vorticella picta was sensitive to concentration variation of Hg^2＋;Vorticella microstoma was sensitive to concentration variation of Pb^2＋.

关 键 词：活性污泥 重金属离子 原生动物 COD去除率 微型动物群落 

分 类 号：X703[环境科学与工程—环境工程]