生物接触氧化与超滤膜联用工艺研究  

Study on Biological Contact Oxidation and Ultrafiltration Combined Process

作　　者：张海丁 夏圣骥[1] 袁方竹 

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《水处理技术》2018年第3期104-108,共5页Technology of Water Treatment

基　　金：国家重点研发计划(2016YFC0400800-2);国家自然科学基金(51778442;51578388)

摘　　要：采用混凝、沉淀、生物接触氧化、超滤膜过滤组合工艺对长江水进行深度处理研究。结果表明,传统的混凝沉淀工艺可以有效地去除原水中大部分的浊度和有机物质,对于实验中的长江原水,投加14.88 mg/L的PAC混凝剂,可以使出水浊度降低到4 NTU以下,并且可以去除50%的有机物质。后续的生物接触氧化工艺可以进一步去除水中60%左右的有机物。生物接触氧化工艺主要是去除水中蛋白质、富里酸等易造成膜污染的有机物质,因此可以减轻后续膜处理工艺的膜污染程度。超滤膜出水浊度一般低于0.1 NTU,通过扫描电镜观察反冲洗前后的膜表面可以发现生物接触氧化池中的粉末活性炭颗粒几乎不会堵塞超滤膜,因此不会加剧膜的污染。Coagulation, sedimentation, biological contact oxidation and ultrafiltration combined technology were used to treat the raw water from Yangtze river. The results showed that, the conventional coagulation and sedimentation process could remove most of turbidity and organic matter in the raw water.To the experimental raw water, the effluent turbidity could reduce under 4 NTU and remove 50% of organic matter with 14.88 mg/L PAC coagulant dosage. The post-biological contact oxidation process could further remove 60% of the organic matter. The biological contact oxidation process could mainly remove the protein and fulvic acid, which would lead to membrane fouling, so this process could relieve the membrane fouling in membrane treatment process. The turbidity of the ultrafiltration membrane effluent coud keep under 0.1 NTU, and the SEM images of the membrane surface showed that, the powdered activated carbon from the biological contact oxidation tank barely blocked the pore on the surface of membrane, and intensified the membrane fouling.

关 键 词：生物接触氧化 超滤膜 长江水 粉末活性炭 

分 类 号：X703.1[环境科学与工程—环境工程] TQ028.8[化学工程]