In order to upgrade the effluent standard from level 1 B to level 1 A,a wastewater treatment plant with limit land occupation in Guangdong Province adopted the BFM(BioFilm & Magnetic)process combined of pure moving bed biofilm reactor(MBBR)and super-efficiency separation process to realize original pool reconstruction.The project implementation time is less than 60 days.In view of this situation,the BFM process of pure membrane moving bed biofilm reactor(MBBR)and super-efficient separation are finally adopted.The average effluent of CODCr,BOD5,ammonia nitrogen,TN,SS and TP is(14.0±4.2),(2.5±0.2),(1.1±0.9),(10.7±2.0),(4.1±1.4),(0.1±0.1)mg/L,respectively,and reach the designed discharge standard steadily.The project construction is rapid,and the land occupation is compact.The engineering cost is low due to the original pool reconstruction.Aerobic suspended carrier realizes the effective enrichment of nitrifying bacteria and ensures the effective removal of ammonia nitrogen.Anoxic suspended carrier realizes the effective enrichment of denitrifying bacteria and ensures the standard discharge of total nitrogen.The electricity cost of the project is 0.167 yuan/m3,and the direct operating cost is 0.42 yuan/m3,which provided a technical reference for the implementation of such projects in the future.
关键词
移动床生物膜反应器(MBBR)/超效分离/悬浮载体/原池改造/硝化菌
Key words
moving bed biofilm reactor(MBBR)/super-efficiency separation process/suspended carrier/original pool reconstruction/nitrifying bacteria
维普
万方数据