Pollution in the basin of east Liao River on normal water period and the research of control measures

From field sampling and testing in the east Liao River on normal water period,we measure 6 Indicators including temperature,PH,dissolved oxygen,chemical oxygen demand,ammonia nitrogen and total phosphorus.The results show that the content of chemical oxygen demand and ammonia nitrogen overweight by different level,that industrial point pollution and city sewage pollution have controlled,but it still exists in some areas,that agricultural pollution is the main pollutant source and shows increasing trend.Considering pollutant sources situation in East Liao River,artificial wetland technology is mentioned as pollution controlling solutions and feasibility analysis.