化学混凝法预处理农村生活污水  

Pretreatment of Rural Domestic Wastewater by Chemical Coagulation Process

作　　者：王明斌 吴勇[1,2] 古腾 谢兴富 王辉[1,2] 聂凯翔[1,2] WANG Mingbin GU Teng XIE Xingfu WANG Hui NIE Kaixiang(State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, Sichuan, China Chengdu University of TechnologyCollege of environment and Civil Engineering,Chengdu 610059, Sichuan, China)

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都610059 [2]成都理工大学环境与土木工程学院,四川成都610059

出　　处：《四川冶金》2017年第5期68-73,共6页Sichuan Metallurgy

摘　　要：针对曝气生物滤池处理生活污水时除磷脱氮存在相互影响,以及产生大量活性污泥影响曝气生物滤池使用寿命的缺点。通过实验研究了氯化铁混凝剂不同添加量对生活污水预处理的效果,探讨了总磷(TP)、波长254nm处单位比色皿光程下的紫外吸光度(UV254)、浊度等去除的因素,并采用SMT提取法(Standard,Measurements and Testing)分析了混凝产生的沉淀中各形态磷含量及相互关系。水样分析结果表明:投药量为0.8mg·L-1时,出水水样的浊度、UV254和TP分别为4.70 NTU、0.184cm-1、0.031 mg·L-1,去除率分别为88.50%、73.73%、99.17%,铁含量为0.350 mg·L-1。SMT提取法分析结果表明,氯化铁混凝剂优先沉淀无机磷。In viewofthedisadvantages ofmutual influence of phosphorus and nitrogen removal in the treatment of domestic sewageby biological aerated filter and the large amount of activated sludge to affect the service life of the biological aerated filter.It is studied in this paper that the effect of different coagulant dosage on the pretreatment of domestic sewage.The factors of TP,UV254 and turbidity removal were discussed,and the SMT（Standard,Measurements,and Testing）was used to analyze the content and relationship of different forms of phosphorus in the precipitation.Our results demonstrated that while the coalugant dosage was 0.8 ml·L^-1,the turbidity,UV254 and TP of effluent water was 4.70 NTU、0.184 cm^-1、0.031 ml·L^-1 and the removel rate of which was 88.50%,73.73%,99.17%,the iron levels of effluent was 0.350 mg·L^-1.The SMT extraction analysis results showed that ferric chloride coagulant would precipitateinorganic phosphoruspreferentially.

关 键 词：混凝剂 预处理 农村生活污水 

分 类 号：X799.3[环境科学与工程—环境工程]