摘要
为了缓解MBR工艺的膜污染,向MBR工艺中投加复合混凝剂,考察了复合混凝剂对污泥性能的影响。结果表明,投加复合混凝剂可降低污泥比阻,明显增大污泥絮体的平均粒径、降低其分形维数,且污泥的可溶性微生物产物(SMP)含量也明显下降,这样有利于增强污泥的沉降性能、降低膜滤饼层的污染、增强膜表面的透水性。
To alleviate the membrane fouling in MBR process,the composite coagulant was added into the reactor. The effect of combined coagulant on sludge performance was investigated. The results show that adding the composite coagulant can decrease specific resistance of sludge,increase the average particle size of sludge floc and decrease its fractal dimension. Also,the soluble microbial products (SMP) content is decreased significantly. In this way,the settleability of sludge is enhanced,the cake layer fouling is ...
出处
《中国给水排水》
CAS
CSCD
北大核心
2009年第23期121-122,125,共3页
China Water & Wastewater
关键词
复合混凝剂
污泥
膜污染
composite coagulant
sludge
membrane fouling
