Pollution and protection of Bohai Bay

Bohai Bay is one of the important enclosed coastal sea in China, and situated in the west Bohai Sea and coast of Tianjin city, Hebei and Shandong provinces. It has an area of 16000 km 2. Owing to the Beijing-Tianjin area's rivers are polluted by effluent and storm runoff, a lot of waste water is discharged into the Bohai Bay per year. The main pollution problems were analyzed. The results indicated that despite the Bohai Bay had greater environmental assimilation and dilution capacity for pollutants, the pollution had led to higher eutrophication state, happening of fish and shellfish burst death phenomena in Bohai Bay. Several protection measures were also put forward here.