Degradation of Ammonia Nitrogen in Micro-Polluted River Water and Combined Sewage by MBBR with Different Packings
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.
moving bed biofilm reactor(MBBR)bio-carrier fillermicr-bio film formation speedservice liferemoval rate of ammonia nitrogen
万方数据
维普
