Moving bed biofilm reactor(MBBR)has a strong nitrogen removal capacity for wastewater,and the material of the filler in the reactor is also an important factor affecting the nitrogen removal capacity.By adding polyethylene(PE)bio-carrier filler and polyurethane porous(PPC)gel carrier filler in the MBBR-AO coupled process wastewater treatment process,the effects of filler materials on the degradation of ammonia nitrogen in micro-polluted river water and rainwater and wastewater effluent,as well as microorganisms'film-attachment speed and service life of different filler materials were investigated.The results showed that compared with the PPC filler,the PE filler had a slower film hanging speed,but its service life was longer.At the same time,the addition of PE filler was more conducive to the degradation of ammonia and nitrogen in the MBBR-AO coupled process in both short-term and long-term operation of micro-polluted river water and mixed flow rainwater and wastewater.The results of this research can provide practical guidance for the selection of filler materials in wastewater treatment process.
关键词
移动床生物膜反应器(MBBR)/生物载体填料/微生物挂膜速度/使用寿命/氨氮去除率
Key words
moving bed biofilm reactor(MBBR)/bio-carrier filler/micr-bio film formation speed/service life/removal rate of ammonia nitrogen
维普
万方数据