低温对市政污水生物处理的影响及对策  

Influence and Countermeasures of Low Temperature on Biological Process for Municipal Wastewater Treatment

作　　者：张涛[1] 余冉[1] ZHANG Tao;YU Ran(School of Energy and Environment,Southeast University,Nanjing210096,China)

机构地区：[1]东南大学能源与环境学院,江苏南京210096

出　　处：《净水技术》2022年第6期24-29,38,共7页Water Purification Technology

基　　金：国家自然科学基金(51878145);江苏省重点研发计划(社会发展)项目(BE2019709)。

摘　　要：冬季环境温度过低,城市污水处理厂的常规生物处理工艺经常出现处理效率下降、出水水质不达标的情况。文中介绍了低温对市政污水处理系统中活性污泥微生物的影响,重点从污泥微生物群落结构、微生物活性,污泥絮体结构稳定性以及絮体沉降性能等方面综合探究了低温导致生物处理效率下降的原因。同时对近年来国内污水生物处理工艺的低温脱氮和低温除磷技术研究进展进行了综述,列举了多个国内低温市政污水生物处理工艺的改造实例,并提出利用微生物膜技术的组合工艺在低温污水处理领域有着广阔的研究与应用前景。In winter,the conventional biological treatment processes in municipal wastewater treatment plants(WWTPs)often occur a decline in treatment efficiency because of the too low ambient temperature and the effluent quality does not meet the standard.This article introduces the influences of low temperature on the microorganisms of the activated sludge in WWTPs.The sludge microbial community structure,microbial activity,structure stability and settling performance of sludge floc are addressed to explores the reasons to cause of the decrease of biological treatment efficiency under low temperature.The research development of biological nitrogen and phosphorus removal technologies for municipal wastewater treatment under low temperature in recent years is summarized,and the according real cases are listed.The combined process of using microbial membrane technology has been proposed to have broad research and application potential to solve the low-temperature effects in WWTPs treatment.

关 键 词：低温 市政污水 脱氮除磷 生物膜 污水处理厂 

分 类 号：X703[环境科学与工程—环境工程]