The main methods of sewage discharge include direct discharge of untreated sewage into water bodies,discharge into water bodies after treatment by sewage treatment plants,sewage reuse and other ways.Sewage is discharged into the river through the sewage outlet,so that the water function water bodies are polluted to varying degrees.Conducting investigations into river discharge outlets,monitoring the amount of pollutants entering the river,and implementing effective supervision and management of river discharge outlets are important contents for preventing and controlling water pollution and protecting water resources.
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