Discussion on the integrated management method of multi source pollution in urban lake reservoir from the perspective of"three waters"integration
Xinglin Bay in Xiamen City is a freshwater lake reservoir built with embankments surrounding the sea.Due to complex pollution sources and a lack of ecological flow,its water qual-ity has deteriorated at one point.In recent years,with the implementation of village sewage treat-ment,sewage interception and other treatment projects,the water quality has improved,but the TN and TP indicators can not stably meet the Class V standards of lakes and reservoirs,still show-ing Eutrophication.Focusing on Xinglin Bay 200 km2 watershed scale,fully respect the laws of na-ture,and carry out top-level design with a long-term view.In the short term,"centralized control of P,relaxed control of N",and in the long term,"strict control of P,standard control of N",gradually improve the Eutrophication of lakes,and restore the stable aquatic ecosystem of clear wa-ter grass lakes.Following the strategy of prioritizing pollution control,ecological restoration,wa-ter diversion expansion,and equal emphasis on construction and management,exploring a system-atic governance path for the integration of water environment,water resources,and water ecology,providing new ideas and reference for the governance of urban lake reservoir.
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