Pilot study of integrated process of activated carbon-ultrafiltration-nanofiltration for advanced water treatment

Abstract

金门岛内水库的富营养化程度严重,藻类所产生的臭味物质、有机碳及消毒副产物的浓度非常高,影响岛内民众健康。研究利用活性炭结合超滤及纳滤工艺,将甲基异莰醇-2、土臭素处理至嗅阈值以下,将不可挥发溶解性有机炭(nPdOC)从6.4Mg/l降至0.2Mg/l;三卤甲烷生成势(THMfP)和卤乙酸生成势(HAAfP)可分别从489μg/l和656μg/l去除至38μg/l及17.6μg/l,去除率分别为92%及97%。中试结果表明,各检测项目均符合台湾地区饮用水标准。由32位金门县自来水厂员工测试3种水的适饮性,其中经活性炭结合超滤及纳滤组合工艺处理后的水样水质为多数测试人员所接受。There is serious eutrophia in Jinmen reservoir.The super high concentrations of odor gases,organic carbon,and disinfection by-products from algae do harm to the people's health.In this study by adopting the integrated process of activated carbon-ultrafiltration-nanofiltration,the concentrations of 2-MIB and geosmin were controlled to below the odor thresholds,and the non-purgeable dissolved organic carbon(NPDOC) was decreased from 6.4 mg/L to 0.2 mg/L;the trihalomethane formation potential(THMFP) and haloacetic acid formation potential(HAAFP) were removed from 489 μg/L and 656 μg/L to 38 μg/L and 17.6 μg/L respectively,and the removal ratio was 92% and 97% respectively.The pilot research result showed that all water quality indexes could meet the drinking water standards in Taiwan.Through the drinkability test held by 32 Jinmen water treatment plant employees,the water quality of the effluent from activated carbon-ultrafiltration-nanofiltration process was accepted by most of people

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