重力驱动超滤技术处理高浊水的效能及机制研究  

Performance and mechanism of gravity-driven ultrafiltration technology in treating high turbidity water

作　　者：郑成志 姜舒 孙国胜 王澳 梁恒[4] 罗娇赢 李圭白[4] 唐小斌 ZHENG Chengzhi;JIANG Shu;SUN Guosheng;WANG Ao;LIANG Heng;LUO Jiaoying;LI Guibai;TANG Xiaobin(Guangdong Yuehai Water Co.,Ltd.,Shenzhen 518000,China;Guangdong Yuehai Water Investment Co.,Ltd.,Shenzhen 518000,China;Harbin Institute of Technology National Engineering Research Center for Water Resources Co.,Ltd.,Harbin 150090,China;Harbin Institute of Technology Harbin Institute of Technology State Key Laboratory of Urban Water Resources and Water Environment,Harbin 150090,China;Heilongjiang College of Construction,Harbin 150025,China)

机构地区：[1]广东粤海水务股份有限公司,深圳518000 [2]广东粤海水务投资有限公司,深圳518000 [3]哈尔滨工业大学水资源国家工程研究中心有限公司,哈尔滨150090 [4]哈尔滨工业大学城市水资源与水环境国家重点实验室,哈尔滨150090 [5]黑龙江建筑职业技术学院,哈尔滨150025

出　　处：《给水排水》2024年第5期33-41,共9页Water & Wastewater Engineering

基　　金：国家自然科学基金(52370007);黑龙江省自然科学基金(YQ2022E034);广东省重点领域研发计划资助项目(2022B0101090004)。

摘　　要：重力驱动超滤工艺(GDM)具有低维护、免清洗等特点,是农村净水的实用技术;然而,季节型高浊/暴雨型高浊给GDM系统稳定性造成了巨大挑战。研究构建了间歇曝气耦合GDM工艺直接过滤高浑浊度水,并探究了GDM工艺长期运行的通量稳定机制和净水效能。结果表明,GDM工艺可在无反冲洗条件下长期稳定运行,且耦合曝气后显著提升GDM稳定通量(38.81%),对UV254、氨氮、高锰酸盐指数的平均去除率分别达62.22%、31.04%、33.86%。间歇曝气可促使滤饼层变得疏松多孔,提升滤饼层内的微生物多样性,强化了生物滤饼层对污染物的降解效能。因此,GDM工艺可有效应对水源水季节型高浊/暴雨型高浊问题。Gravity-driven ultrafiltration(GDM)process,characterized by low maintenance and no backwashing,is the preferred technology for rural water purification.However,seasonal high turbidity/storm-induced high turbidity presents significant challenges to the stability of GDM systems.This study established an intermittent aeration coupled with GDM process for the direct filtration of high-turbidity water and investigated the mechanisms underlying flux stability and water purification efficiency during prolonged GDM operation.The results indicated that the GDM process can operate stably for an extended period without backwashing,and the coupling of aeration significantly enhances GDM stable flux(by 38.81%).The average removal rates for UV_(254),ammonia,and permanganate index were 62.22%,31.04%,and 33.86%,respectively.Intermittent aeration induces the bio-cake layer to become more porous and loose,enhancing microbial diversity and strengthening the pollutant degradation efficiency of the bio-cake layer.Therefore,the GDM process can effectively address the challenges posed by seasonal high turbidity/storm-induced high turbidity in source water.

关 键 词：重力驱动超滤工艺 高浑浊度 生物滤饼层 膜污染 农村供水 

分 类 号：TU991.2[建筑科学—市政工程]