关键词: 污水处理, 后置反硝化, 脱氨氮, 脱总氮

Abstract: As the situation of water pollution in China becomes more and more serious, the state has increasingly higher requirements for water quality discharge standards and total amount control of petrochemical enterprises, and more stringent index limits are imposed on ammonia nitrogen and total nitrogen. This paper introduces the post-denitrification denitrification process and equipment for total nitrogen removal. Through successful application of the process and equipment to petrochemical wastewater treatment, it is shown that the process can control the COD index in wastewater while removing total nitrogen and can help the wastewater to reach the COD discharge standard.

Key words: wastewater treatment, post-denitrification, ammonia-nitrogen removal, total nitrogen removal