摘要
采用粉末活性炭(PAC)与超滤膜(UF)相结合,经微生物富集形成生物粉末活性炭/超滤(BPAC/UF)系统,并以天津工业大学畔湖水模拟饮用水水源,考察该工艺的膜污染情况。结果表明:BPAC/UF系统可以很好地去除NH3-N,去除率达65%,对CODMn也有一定的去除效果;相对于UF系统,BPAC/UF系统可以减缓膜污染;生物活性炭对水中有机物的降解避免了有机物堵塞膜孔,减缓了不可逆污染;生物活性炭的形成使得系统中的EPS含量增加,这是造成膜表面滤饼层形成速率过快的主要原因。
A biological powdered activated carbon/ultrafiltration （BPAC/UF） system was formed by microbial enrichment to treat lake water in Tianjin Polytechnic University. The membrane fouling process and mechanism were investigated. The results indicated that NH3 - N was removed effectively with the removal efficiency of 65%. CODMn was also removed to a certain extent. Membrane fouling was effectively mitigated in BPAC/UF system compared with that in UF system. The degradation of organic matters in the water by BPAC avoided membrane pore blocking and thus retarded the irreversible fouling. The increase of EPS content, which was caused by the formation of BPAC, was the main reason for the rapid formation of cake layer.
出处
《中国给水排水》
CAS
CSCD
北大核心
2014年第23期38-42,共5页
China Water & Wastewater
关键词
生物粉末活性炭
超滤膜
膜污染
微污染源水
biological powdered activated carbon
ultrafiltration membrane
membrane foul-ing
micro-polluted source water
