Investigation and Evaluation of Eutrophication in a River Type Reservoir of Dazhou
Most areas in Dazhou use river type reservoirs as drinking water sources.In spring,algae can easily proliferate in large numbers,leading to eutrophication in water and threatening drinking water safety.In order to ensure drinking water safety,this study set up 6 monitoring points in the drinking water source area of a certain river type reservoir area,and sampled and analyzed water temperature,dissolved oxygen,total nitrogen,total phosphorus,permanganate index,transparency,and chlorophyll a for three consecutive days in spring.After statis-tical analysis of the results,the comprehensive nutritional status index method was used to evaluate the nutritional status of water.It was found that during the investigation and monitoring period,the reservoir area was in a mild eutrophication;the cause of eutrophication is an adequate source of nitrogen and phosphorus nutrients.It is rec-ommended to reduce the input of nitrogen and phosphorus nutrients into the reservoir and strengthen water re-placement to reduce eutrophication levels.
river type reservoirwater sourceseutrophicationsurveyevaluation
NETL
NSTL
万方数据
维普
