Research on the Technology of Improving the Effluent Quality of Urban Sewage Treatment Plants
With the sustained and rapid development of China's national economy,the country is paying more and more attention to accelerating the construction and optimization of the ecological environment system.The State Council's special plan and the overall plan of the Ministry of Ecology and Environment have successively issued plans and implementation plans for various types of water pollution prevention and control,water pollution governance special rectification,and water ecological environment protection,requiring further optimization and improvement of the national ecological environment quality,and the gradual realization of a virtuous cycle of the ecological system.At present,the discharge standards implemented by urban sewage treatment plants in China are the national standard"Pollutant Discharge Standards for Urban Sewage Treatment Plants"(GB18918-2002),with most of the discharge standards being Grade 1,Class A and Class B standards.In order to improve the water ecological environment and achieve sewage recycling,it is imperative to improve the quality of tail water.By analyzing the commonly used techniques for improving the quality of wastewater from sewage treatment plants,a reference plan is provided for improving the quality of tail water.
water quality improvementartificial wetlandsdenitrificationphosphorus removal
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