摘要
对邻氨基苯酚(AP)和3,3′,4′,5-四氯水杨酰苯胺(TCS)对活性污泥产率以及工艺运行效能的影响进行了研究,分析了这2种化学物质污泥减量化效果及对COD和氨氮去除率影响程度的差异及原因.结果表明,AP和TCS都能有效地降低污泥产率,均可以作为解偶联剂.与对照组相比,当AP和TCS的质量浓度分别为15和1.2 mg/L时,污泥减量效果最好,分别达到21%和52%,而COD去除率仅有轻微下降.TCS造成氨氮去除率降低约32%左右,而AP则对其影响很小.同时研究了2种解偶联剂对污泥脱水性能、沉降性能的影响.结果显示,污泥的脱水性能受2种解偶联剂影响不大,SVI值受TCS影响而略有升高.镜检发现,和对照组相比,投加解偶联剂的污泥微生物结构发生了变化,且原生动物和后生动物的种类和数量减少.
The effects of 2-aminophenol and 3,3＇, 4＇, 5-tetrachlorosalicylanilide on biomass yields were studied. The results shows that when AP is 15 mg/L and TCS is 1.2 mg/L, observed growth yields （Yobs） of the sludge are reduced by 21% and 52% with low reduction of COD removal efficiency. Removal rates of ammonia decrease by 32% with TCS but are not affected obviously by AP. The effects of AP and TCS on dewater ability and settle ability of sludge were also investigated. The dewater ability of sludge is not affected by the two uncouplers. The SVI values of sludge with TCS increase slightly. According to microscope observation, the sludge microbe populationchanges. Meanwhile quantities and kinds of protozoan and metazoan were reduced.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2009年第5期1481-1486,共6页
Environmental Science
基金
中澳合作基金项目(2006DFA93110)
山东省自然科学基金项目(Z2006B04)
山东省中青年科学家奖励基金项目(2006BS08001)
山东省国际合作项目(鲁科外字[2005]114)
山东省环保局项目(hcyf0602)
关键词
污泥减量化
解偶联剂
邻氨基苯酚
四氯水杨酰苯胺
sludge reduction
uncouplers
2- aminophenol
3,3＇, 4＇, 5- tetrachlorosalicylanilide
