濑溪河(荣昌段)污染状况分析及防治对策

Pollution situation analysis and countermeasures of Laixi river(period of Rongchang)

对濑溪河(荣昌段)干流及濑溪河主要汇入河流水体进行调查分析,结果表明濑溪河(荣昌段)水体超标严重,超标因子有TN、CODCr和CODMn等.利用综合污染指数(K)法和水体富营养化评价法对濑溪河干流水质污染状况进行评价,结果表明濑溪河各采样点水体均属重度污染水体和富营养化水体,其中汤家河坝和洗选厂排污小河下游水体综合污染指数最高,其次为虹桥安置房处及泸县小河入汇处濑溪河水体.对汇入河流水体及其下游濑溪河干流水体相关指标进行相关性分析.结果表明,入汇河流水体和濑溪河干流水体之间存在较大的影响.并针对濑溪河复杂的污染来源,提出现实可行的综合防治对策,以有效及时的恢复其生态和环境功能.

Through the investigation analysis of the main stream of LAIXI river （period of Rongchang） and tributaries into the river, the results showed that the water of LAIXI river （period of Rongchang） has exceeded the standard limit seriously, excessive factors included TN, CODCr and CODMn, etc. The synthetic pollution index method （ K） and eutrophication evaluation were used to evaluate water pollution condition of river. The results showed that the water of each sampling point was severely polluted water and eutrophic water, among them,the synthetic pollution index in downstream water of Tangjiaheba and the sewage river of the Xixuanchang were highest. The second was the water of Hongqiao housing and the place that Luxian county river into Laixi river. The related index in water of the tributaries and its downstream of main stream water was analyzed. The results showed that there were some impact on the water between tributaries and main stream. For the complex sources of pollution in Laixi river, and put forward the practical and feasible comprehensive prevention and control countermeasures to recover its ecological and environmental functions effectively and timely.