快速降温下磁场强化SBR处理低温废水研究  

The Magnetic Field Strengthening Effect on SBR Treating Low Temperature Wastewater under Rapid Cooling

作　　者：牛川[1,2] 凌虹 王连军[2] Niu Chuan(Jiangsu Key Laboratory of Environmental Engineering,Jiangsu Province Academy of Environmental Science,Nanjing 210036,China;2Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]江苏省环境工程重点实验室江苏省环境科学研究院,江苏南京210036 [2]南京理工大学,江苏南京210094

出　　处：《安徽农学通报》2018年第8期75-78,共4页Anhui Agricultural Science Bulletin

基　　金：国家自然科学基金青年基金(51508241);中国博士后科学基金面上资助(2015M570418)

摘　　要：该研究通过磁场强化弥补生物反应器低温运行的不足,考察磁场作用下活性污泥微生物在快速降温、复温冲击条件下磷脂脂肪酸(PLFA)的变化规律,结合PLFA生物标记反映微生物的适冷性及磁场对活性污泥菌群抗冷冲击性能的强化效果。结果表明,快速降温导致COD去除率下降40%,磁场强化可提高COD去除率5%~10%,且有利于低温下革兰氏阴性菌的富集,同时提高了微生物细胞膜内PLFA的多样性及微生物适冷性,进而提高了污水处理效率。This work is aimed to cover the shortage of bioreactor operation under low temperature through magnetic field(MF)strengthening.The PLFA variation law of activated sludge microorganisms(ASM)with MF was investigated,under the condition of rapid cooling and rewarming.The cold adaptability of microorganisms and the strengthening effect of MF on ASM were reflected combining PLFA biomarkers.The results showed that the removal rate of COD decreased 40%significantly due to the rapid cooling.The MF enhancement could increase 5%to 10%of COD removal rate,and was beneficial to the enrichment of Gram negative bacteria at low temperature,and increased the diversity of PLFA in microbial cell membrane,as well as the cold adaptability of microorganism and the efficiency of sewage treatment.

关 键 词：快速降温 活性污泥 磷脂脂肪酸 冷冲击 磁场强化 

分 类 号：X505[环境科学与工程—环境工程]