高藻水处理过程中的加氯方式优化及藻源嗅味物质控制  

Optimization of Chlorination Method and Control of Algagenic Odor Compounds in Algae-laden Water Treatment

作　　者：韩正双[1] 闫慧敏[1] 刘禧文 方华 HAN Zhengshuang;YAN Huimin;LIU Xiwen;FANG Hua(Tianjin Public Utility Design&Research Institute,Tianjin 300100,China;Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]天津市公用事业设计研究所,天津300100 [2]河北工业大学,天津300401

出　　处：《供水技术》2024年第5期16-21,27,共7页Water Technology

基　　金：天津水务集团有限公司科技项目(2018KY-01)。

摘　　要：针对高藻期水库水,研究了不同预氯化-消毒组合方式对常规工艺处理高藻水过程中污染物去除及藻源嗅味物质转化和去除的影响,以及预氯化-消毒组合方式对粉末活性炭吸附控制藻源嗅味物质效果的影响。结果表明,高藻水预氯化会使水中以非溶解态存在的2-甲基异莰醇(2-MIB)、土臭素(GSM)等藻源嗅味物质快速转化为溶解态。常规工艺能有效去除高藻水中的非溶解态嗅味物质,但对溶解态嗅味物质的去除效果十分有限;预氯化对常规工艺去除高藻水中2-MIB和GSM存在较大不利影响。粉末活性炭吸附能有效提升对2-MIB和GSM的去除效果,但预氯化会显著降低粉末活性炭吸附+常规工艺对2-MIB和GSM的总体去除效果。因此,对存在藻源嗅味物质的高藻水,不建议进行预氯化处理。Using the high algae-laden period reservoir water as raw water,the impacts on pollutants removal and transformation of algagenic odor compounds in algae-laden water treatment by conventional process with different combinations of pre-chlorination and disinfection were studied.Meanwhile,the impacts of chlorination methods on the effects of powdered activated carbon adsorption for the control of algagenic odor compounds were investigated.Results showed that pre-chlorination of algae-laden water could quickly convert algagenic odor compounds like 2-MIB and geosmin from undissolved to dissolved.Conventional process could effectively remove undissolved taste and odor compounds in algae-laden water,whereas it had little removal efficiency on dissolved taste and odor compounds.Pre-chlorination had strong adverse effects on the removal of 2-MIB and geosmin by conventional process.Powdered activated carbon adsorption showed high removal efficiency of 2-MIB and geosmin,but pre-chlorination significantly reduced the overall removal efficiency of 2-MIB and geosmin by powder activated carbon adsorption and conventional process.Therefore,pre-chlorination is not recommended for the treatment of algae-laden water with algagenic odor compounds.

关 键 词：高藻水 嗅味物质 预氯化 消毒 粉末活性炭 

分 类 号：TU991.2[建筑科学—市政工程]