Research Of The Maozhou River Water Quality Assessment And Comprehensive Pollution Control Measures

Water pollution is more and more serious,With the rapid development of economy and population continuously grow.So it is necessary to do Water environmental quality assessment to comprehensively renovate the river water pollution.It is important to do some Effective prevention and control measures to the comprehensive renovation of MaoZhou rive basin,for the serious water pollution.In this paper,we assess the MaoZhou river water environment quality,using the fuzzy comprehensive evaluation method,and predictively analysis the basin pollution load.It is helpful for the researchers to master MaoZhou river water quality status and the contribution of each pollution source.And can for provide certain scientific basis for protection and management of the MaoZhou river.The main research contents and conclusions are as follows.(1)We collected 2011 to 2015 Water quality basic data of GongHe Village section,YanChuan section,theYangYong bridge section,LiSonglang section and Lou village section of MaoZhou the river.Determined the MaoZhou river evaluation index,according to the situation of water pollution in shenzhen and researches about water environmental quality evaluation index.We decide to use fuzzy comprehensive evaluation method to evaluate MaoZhou river water quality,after analysising the advantages and disadvantages of the existing water quality evaluation method.And set up a six levels of membership degree combination empowerment fuzzy comprehensive evaluation model.The model optimize the traditional fuzzy comprehensive evaluation model,and can evaluate bad V class,To combine the analytic hierarchy process(ahp)and entropy weight method to determine the pollution factor weight value improve the scientific nature and accuracy of evaluation results.In 2011 ~ 2015,the MaoZhou river basin water pollution is serious and water quality is in the V class,bad V kind for a long time,according to the result of the assessment.Pollution is gradually serious from upstream to downstream and the plentiful water slightly better than the mutagenicity.We come to the conclusion that the main pollutants of MaoZhou river are total nitrogen,total phosphorus,ammonia nitrogen and dissolved oxygen.According to analy the evaluation results.(2)The pollution of trunk stream water of MaoZhou river gradually aggravate from upstream to downstream,by analyzing the spatial and temporal variations of river water pollution factors.Water quality of Lou village is better than the other four sections in the five selected sections.Water quality of GongHe village section and YanChuan section in non-flood season is better than in Flood season,and it of YangYong bridge section,LiSonglang section and Lou village section in Flood season is better than in non-flood season.(3)The concentration of major pollution index showe a trend of a significant reduction,according to analys the trend of main pollution index by the software PWQtrend2010 based on the seasonal Kendall test method.(4)We come to the conclusion that life pollution is the main source pollution by analyse the Industry,residents,livestock and aquaculture and Runoff non-point source pollution in 2013.Contribution rate in the order,residents?Industry?Runoff non-point source?livestock and aquaculture.(5)Putting forward the corresponding pollution prevention measures against water pollution characteristics of the MaoZhou river,Based on the research of the existing techniques of pollution ecology.