Analysis And Control Of Metal Pollutant In Sewage Rivers Pouring Into Bo Sea In Tianjin Area

As China's Bo Sea economic zone of rapid development, a large number of land-based sources of heavy metal pollutants being discharged into the exchange capacity of the poor inland sea--Bo Sea, therefore the Bo Sea coastal ecological environment have been seriously damaged. Based on two typical sewage rivers which run through Tianjin and finally pour into Bo Sea, this paper carries on an in-depth study of heavy metal pollutants in the river within the emission characteristics, mutual forecast of pollutants and control measures of heavy metal pollutions.Based on combination of available historical data and relevant regulations, the program of sampling test was developed. And then a continuous detection was carried on in different period of Beitang sewage river and Dagu sewage river. The paper gets a lot of information about pollutions in the rivers through the synchronous sampling test on waterbody and river sediments, particularly innovative column sampling and layered detection. In access to a lot of heavy metal pollution data, the use of commonly used methods of environmental assessment to evaluate the level of heavy metal pollution, the overall master all kinds of heavy metals in the emission intensity and emission characteristics. And index evaluation was used for water body, the evaluation of sediment used geographic accumulation index (Igeo) which used a lot.When data accumulation and preliminary data analysis have been completed, the paper selected major pollutants and contaminated sites. Through statistical analysis software, some of these heavy metal contaminants mutual forecast model have been built. The results show that in intermittent flow of sewage river in which the rivers and lakes water quality model are not suited, the general statistical software for linear and nonlinear mathematical model could be used to achieve the mutual pollutants forecast. Although unable to meet the higher forecasting accuracy, the models could provide help to overall water quality control.Finally, through successful experience at home and abroad, based on the significant accumulation of pollution levels measured data and analysis, the paper gives pollution control methods for Beitang sewage river and Dagu sewage river. Including speeding up the process of the market for the sewage treatment plant, and concrete repairing measures by plants and microbes along the rivers.