我国南部城市河道水异地处理效果研究  

An improved approach to treating polluted urban river water in individual areas in south China

作　　者：王令[1] 王文杰[1] 刘燕[2] 翟英华[3] 高振记[1] 杨波[4] 

机构地区：[1]中国环境科学研究院,北京100012 [2]复旦大学环境科学与工程系,上海200433 [3]东北农业大学资源与环境学院,哈尔滨150030 [4]清华大学环境科学与工程系,北京100084

出　　处：《安全与环境学报》2014年第3期229-233,共5页Journal of Safety and Environment

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07529-007)

摘　　要：研究A2/O工艺结合化学沉淀法对具有我国南部城市河道水典型特征的布吉河道水的处理效果。单独采用A2/O工艺处理河道水,出水CODCr达到GB 8978—1996《污水综合排放标准》一级标准,TN质量浓度达到二级标准;TP和SS质量浓度不达标。A2/O出水经聚合氯化铝(Polyaluminium Chloride,PAC)混凝沉淀后,TP和SS质量浓度均达到一级标准,CODCr和TN质量浓度也分别较化学沉淀前降低10.7%和16.5%。A2/O工艺结合化学沉淀法处理河道水是一种有效、易维护的河道水异地处理方法。The article takes it as its target to propose an improved approach to treating the polluted urban river water in Shenzhen, a city in south China, by combining A^2/O process with the chemical precipitation. As is known, it has been a serious problem that most of Chinese urban river water has been polluted, especially in the cities of China south, where the economy keeps drastic development. The deteriorated urban river water environment system has done great harm and damage to the ecological landscape and water functions, and in turn, has brought strong impact on human wellbeing and social production activities. Facing the depressed situation, we have found that the economic and technological development situation remains far from being satisfied. To improve the worsening situation, we have been feeling it necessary to carry out urgent and efficient urban river water treatment through relevant technological innovations. After careful investigation of the existing water quality situation, we have worked out three appropriate approaches, including the direct treatment in situ, by-pass processes and processing in individual regions, with the voluntary choice from among all kinds of approaches in accordance with the particular needs decided by the actual local authorities. And, then, we have studied and proposed the treatment plans through a detailed consultation with the local authorities by combining the process of A^2/O and chemical precipitation in the regions concerned. Our experiment began with the treatment of the polluted river water by using the A^2/O processing method. And, the next, we have carried out the chemical precipitation by introducing the poly-aluminum chloride （PAC） into the secondary effluent. The results of our experiments suggest that by a single A^2/O process, it is possible to make the effluent COD Cr meet the primary standard of the integrated sewage discharge standard （GB 8978-1996） and the effluent TN could meet the second discharge standard, though, the removal ratios of TP and SS

关 键 词：环境工程学 城市河道水 A^2 O工艺 脱氮除磷 化学沉淀 

分 类 号：X703[环境科学与工程—环境工程]