Development of Sanitary Treatment Methods of Membrane Wash Wastewater from Drinking Water Purification Plant

饮用水净化厂膜冲洗废水卫生处理方法的开发

• 批准号: 07505028
• 负责人: FUJITA Kenji
• 金额: $ 8.32万
• 依托单位: Saitama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07505028/
• 关键词: membrane filtration; micro-filtration; membrane wash wastewater; sludge concentration; coli phage; membrane breakage; fouling materials of membrane; electrolytic coagulation; 膜洗浄; 膜洗浄排水処理; 大腸菌; 浄水処理; 膜分離; 分子量分画

Evaluation of safety aspects of microorganisms in membrane wash wastewater : Using bacteria and coli phage as index of microorganisms, their removal performance by membrane filtration, concentration in the membrane wash wastewater and entrapped amount insid the membrane were investigated. The bacteria and larger size phage were almost separated by micro-filter and they were flushed out to the washing wastewater. The phage, Q beta , which was smaller than the pore size of membrane, was partially removed by MF but the separated phage was not whole discharged to the wash water.Thickening of membrane washing wastewater : Three types of thickening method, that is electrolytic coagulation/settlement, granular filtration, and settling/membrane filtration were investigated. The settling/membrane filtration could produced as good quality filtered water as drinking water. The electrolytic coagulation/settlement process could discharge the highest concentrated sludge. Higher concentrated sludge w … More as obtained with the iron anode than the aluminum anode, and better supernatant quality was gotten with the aluminum anode than the iron anode. The granular filtration was inferior to the other methods in both the separated water quality and the sludge concentration.The membrane filtration technology considering washing process : It happens in outside-in mode hollow fiber membrane filtration that the sludge accumulates around and between the membrane fibers. The inter fiber clogging was caused under the condition of lower flow rate than critical cross flow speed. The critical cross flow speed was 0.7m/s and shear strength at the speed was estimated 200Pa.Membrane filtration with pilot scale plant : Actual raw water was applied for the polyethylene micro-filter membrane filtration. Sterilization such as chlorimation, ozonation or ultra-violet radiation before filtration were efficient to reduce trance membrance pressure rising. The substances separated by membrane and chemical washing wastewater contained polysaccharide, protein, peptide, and amino as well as polycyclic-ring aromatic compounds. Less

膜清洗废水中微生物的安全性评价：以细菌和大肠杆菌噬菌体作为微生物指标，考察了膜过滤对微生物的去除性能、膜清洗废水中微生物的浓度和膜内截留量。细菌和较大尺寸的噬菌体几乎被微过滤器分离，它们被冲洗到洗涤废水中。膜清洗废水的浓缩：研究了电解混凝沉淀法、颗粒过滤法和沉淀膜过滤法3种浓缩方法，并对膜清洗废水进行了浓缩试验。沉降-膜过滤工艺可生产出与饮用水相同质量的过滤水。电解混凝沉淀工艺可以排出浓度最高的污泥。高浓度污泥w ...更多信息 用铁阳极比用铝阳极得到的上清液质量好，用铝阳极比用铁阳极得到的上清液质量好。颗粒过滤在出水水质和污泥浓度方面均不如其他方法。考虑冲洗过程的膜过滤技术：在由外向内方式的中空纤维膜过滤中，污泥在膜纤维周围和膜纤维之间积聚。在低于临界横流速度的条件下，纤维间发生堵塞。临界错流速度为0.7m/s，剪切强度为200 Pa。膜过滤中试装置：采用实际原水进行聚乙烯微滤膜过滤。过滤前采用氯化消毒、臭氧消毒或紫外线照射等消毒方法可以有效降低滤膜压力上升。膜分离物和化学洗涤液分离物中含有多糖、蛋白质、肽、氨基和多环芳香族化合物。少

项目成果

大瀧 雅寛: "膜処理プラントにおける高濃度ウィルス・ファージの除去特性に関する研究" 第48回全国水道研究発表会講演集. 48・. 226-227 (1997)

大木正博：“膜处理厂中高浓度病毒和噬菌体的去除特性研究”第48届全国供水研究会议论文集48・227（1997年）。

Shinichiro, Ohgaki, and etal: "Theoretical analysis of phenomenon to suppress the trance membrane pressure with ultra-violet radiation in membrane separation process" Proc.of Environmental Engineering Research. Vol.32. 63-65 (1995)

Shinichiro、Ohgaki 等人：“膜分离过程中利用紫外线辐射抑制恍惚膜压力现象的理论分析”Proc.of Environmental Engineering Research。

Lee, Soc Hyon, and etal: "Virus separation performance of micro-filtration in drinking water treatment process" Proc.of Environmental Engineering Research. Vol.32. 66-68 (1995)

Lee、Soc Hyon 等人：“饮用水处理过程中微过滤的病毒分离性能”Proc.of Environmental Engineering Research。

Takahashi, Katsuo, and etal: "Leakage characteristics of E-coli and coliphages in externally pressuirzed hydrophilic hollow fiber MF membranes" J.of Japan Water Works Ass. Vol.66, No.9. 16-26 (1997)

Takahashi、Katsuo 等人：“外部加压亲水性中空纤维 MF 膜中大肠杆菌和大肠杆菌噬菌体的泄漏特性”J.of Japan Water Works Ass。

Lee, Byung Ho, and etal: "Treatment of membrane wash wastewater from drinking water treatment plant" Annual Conf.of 51th Japan Society of Civil Engineers. Vol.51-7. 202-203 (1996)

Lee、Byung Ho 等人：“饮用水处理厂膜清洗废水的处理”第 51 届日本土木工程师学会年度会议。