污泥微膨胀技术在低负荷生活污水处理中的应用  

Application of sludge micro bulking technology in low-load domestic sewage treatment

作　　者：陈建 周谐 李萍 黄伟 龚玲 刁香维 CHEN Jian;ZHOU Xie;LI Ping;HUANG Wei;GONG Ling;DIAO Xiangwei(Ecological and Environmental Monitoring Center of Chongqing,Chongqing 401147,China;Ecological and Environmental Monitoring Station of Jiangjin District,Chongqing 402260,China)

机构地区：[1]重庆市生态环境监测中心,重庆401147 [2]重庆市江津区生态环境监测站,重庆402260

出　　处：《环境工程技术学报》2018年第2期149-154,共6页Journal of Environmental Engineering Technology

基　　金：科学技术部港澳台科技合作专项(2014DFH90030);重庆市社会民生科技创新专项(cstc2015shmszx20013)

摘　　要：通过对重庆市某镇级污水处理厂研究发现,该污水处理厂污泥体积指数(SVI)为262~380 m L/g,处于污泥膨胀状态。低DO浓度及低污泥负荷是导致该厂处于污泥膨胀的主要原因。活性污泥处于一定程度的微膨胀状态,能够保证COD_(Cr)、NH_3-N、悬浮物固体(SS)、TP浓度等各项出水指标稳定排放,有利于污水处理厂节能降耗。A town sewage treatment plant in Chongqing was studied,and it was found that the sewage treatment plant sludge index(SVI)was between 262-380 mL g and at the sludge bulking state.Low dissolved oxygen and low sludge load were the main reasons of sludge bulking in the sewage treatment plant.Micro bulking of activated sludge in a certain extent could not only guarantee the stable discharge of COD Cr,ammonia nitrogen,SS,TP and other indicators in the effluent,but also be conducive to the energy saving of the sewage treatment plant.

关 键 词：低负荷 污泥微膨胀 控制 应用 

分 类 号：X703[环境科学与工程—环境工程]