序批式MPR反应器处理低C/N城市污水运行方式优化研究  

Optimization of Operation Mode of Sequential Batch MPR Reactor for Low C/N Municipal Wastewater Treatment

作　　者：郭海燕[1,2] 奚志鹏 艾胜书 沈国[2] 李劲松 边德军 GUO Haiyan;XI Zhipeng;AI Shengshu;SHEN Guo;LI Jingsong;BIAN Dejun(College of Environmental and Chemical Engineering,Dalian Jiaotong University,Dalian 116028,China;Jilin Provincial Key Laboratory of Municipal Sewage Treatment(Changchun Institute of Technology),Changchun 130012,China)

机构地区：[1]大连交通大学环境与化学工程学院,辽宁大连116028 [2]吉林省城市污水处理重点实验室(长春工程学院),吉林长春130012

出　　处：《水处理技术》2023年第9期107-112,共6页Technology of Water Treatment

基　　金：国家自然科学基金资助项目(51878067);吉林省科技发展计划项目(20200201005JC)。

摘　　要：微压内循环生物反应器(Micro-Pressure Inner-Loop Bioreactor,MPR)是一种新型的污水处理工艺,在处理低C/N城市污水方面具有潜在优势。本实验考察了不同曝气量和进水方式下序批式MPR反应器对模拟城市污水处理效果,分析了污染物去除过程和污泥特性。研究结果表明,一次进方式下,在进水TN和TP浓度分别为79.52、4.1mg/L,进水C/N约为3.9的进水条件下,曝气量为7.5 L/h时,反应器TN和TP去除率分别达到70.26%和97.76%;采用二次进水方式后出水TN降至13.95 mg/L,TN的去除率提高至81.71%;两种进水方式下,反应器对COD和TP平均去除率保持在88.67%和95.03%。典型周期内污染物历时表明,和一次进水方式相比,分次进水优化了碳源分配,使更多碳源用于反硝化,系统内酸碱环境较一次进水更稳定,活性污泥浓度MLSS和污泥SOUR高于一次进水。Micro-pressure Inner-loop Bioreactor(MPR)is a new sewage treatment process with potential advantages in the treatment of low C/N municipal sewage.In this paper,the effect of sequential batch MPR reactor on simulated municipal sewage treatment under different aeration and influent modes was investigated,and the process of pollutant removal and the characteristics of sludge were analyzed.The results showed that the TN and TP removal rates of the reactor could reach 70.26%and 97.76%,respectively,when the influent TN and TP concentrations were 79.52 and 4.1 mg/L,the influent C/N ratio was about 3.9,and the aeration volume was 7.5 L/h.The effluent TN decreased to 13.95 mg/L,and the TN removal rate increased to 81.71%.Under the two influent methods,the average removal rates of COD and TP in the reactor were maintained at 88.67%and 95.03%.The duration of pollutants in a typical period showed that,compared with the primary influent method,the fractional influent method optimized the carbon source allocation,so that more carbon sources were used for denitrification,and the acid-base environment in the system was more stable than that in the primary influent method.When the MLSS of activated sludge was increased to 9330 mg/L and the SOUR of sludge was higher than that of primary influent,the total amount of sludge EPS increased.

关 键 词：微压内循环生物反应器(MPR) 低C/N城市污水 同步脱氮除磷 运行方式优化 

分 类 号：X703.1[环境科学与工程—环境工程]