城市主城区河道黑臭程度判别研究

Discrimination of Black-odorous Degree of Main City River in Nantong City

以南通市主城区河道为研究对象,运用黑臭多因子加权指数模型对主城区河道的黑臭程度进行判别。研究表明,南通市主城区河道中NH3-N含量在1～11 mg/L之间,CODMn含量在3～13 mg/L之间,DO含量在0. 3～5. 2 mg/L之间。生活污水为南通市主城区河道的主要污染来源,流经居民区的通甲河是生活污水的主要受纳水体,各项污染指标最高,属于黑臭水体。并提出控制黑臭的调控措施和保障手段。

The black-odorous degree of the main city river in Nantong city was judged using the black-odorous weighted multi-factor index model.The study showed that the content of NH 3-N,COD Mn and DO in the main channel of Nantong City was between 1~11 mg/L,3~13 mg/L,0.3~5.2 mg/L,respectively.The domestic sewage was the main source of pollution in the main urban area of Nantong city,and it was also the main cause of black body.Moreover,Tongjia river through the residential area was the main water of domestic sewage,the highest pollution indicators demonstrated that it was the black and odorous water.Meanwhile,the feasible solutions to control black and odour were proposed.