预氧化强化混凝处理引汉济渭工程受水区不同掺混比水源水  

Pre-oxidation Enhanced Coagulation Treatment of Source Water with Different Mixing Ratios in the Water-Receiving Area of the Hanjiang to Weihe Project

作　　者：李梦冉 黄廷林[1,2] 李凯 黄道军 薛睿康 LI Mengran;HUANG Tinglin;LI Kai;HUANG Daojun;XUE Ruikang(Key Laboratory of Northwest Water Resources,Environmental and Ecology,Ministry of Education,Xi'an University of Architecture and Technology,710055;Shaanxi Key Laboratory of Environmental Engineering,Xi'an University of Architecture and Technology,710055;Shaanxi Xixian New Area Water Group Co.Ltd.,712000,Xi'an,China)

机构地区：[1]西安建筑科技大学环境与市政工程学院,西北水资源与环境生态教育部重点实验室,710055 [2]西安建筑科技大学环境与市政工程学院,陕西省环境工程重点实验室,710055 [3]陕西西咸新区水务集团有限公司,陕西西安712000

出　　处：《水处理技术》2023年第7期106-110,共5页Technology of Water Treatment

基　　金：陕西省重点研发计划重点产业链(群)-社会发展领域项目(2019ZDLSF06-03)。

摘　　要：引汉济渭工程通水后,黑河原水与汉江原水将共同作为西安市饮用水水源,且水厂进水中两种原水掺混比例会随引水工程运行调度而改变。本文重点考察了两种原水不同掺混比例下预氧化强化混凝工艺对水中有机物的去除效果。在两处水源以10:0、8:2、2:8、0:10比例掺混条件下,探明了高锰酸钾、高铁酸钾和二氧化氯预氧化强化混凝去除水中有机物的最佳浓度。结果表明,高铁酸钾预氧化-混凝效果最好,四种掺混比下高铁酸钾最佳投药量分别为0.8、0.8、1.0、1.0 mg/L。同等掺混比例和最佳投药量下,高铁酸钾对DOC去除率比高锰酸钾高了16.3%、4.0%、24.9%、29.5%;比二氧化氯高了4.4%、6.2%、6.3%、7.1%。同时,三维荧光光谱分析发现,高铁酸钾预氧化-混凝对溶解性有机物中类蛋白物质组分的去除率最高。本研究能够为引汉济渭工程受水区自来水厂生产运行提供科学依据。After the water diversion project from the Hanjiang to the Weihe is opened,the raw water of the Heihe and the raw water of the Hanjiang will jointly serve as the drinking water source of Xi'an,and the mixing ratio of the two raw waters in the influent water of the water plant will change with the operation and scheduling of the water diversion project.This paper focuses on the removal of organic matter in water by pre-oxidation enhanced coagulation process with different mixing ratios of two kinds of raw water.The optimum concentration of potassium permanganate,potassium ferrate and chlorine dioxide pre oxidation enhanced coagulation for the removal of organic matter in water was studied when the two water sources were mixed at 10:0,8:2,2:8 and 0:10.The results showed that potassium ferrate had the best pre-oxidation-coagulation effect,and the optimal dosage of potassium ferrate under the four mixing ratios were 0.8 mg/L,0.8 mg/L,1.0 mg/L and 1.0 mg/L,respectively.Under the same mixing ratio and optimal dosage,the removal rate of DOC by potassium ferrate is 16.3%,4.0%,24.9%and 29.5%higher than that of potassium permanganate;4.4%,6.2%,6.3%and 7.1%higher than chlorine dioxide.At the same time,3D-EEMs analysis showed that potassium ferrate preoxidationcoagulation had the highest removal rate of protein like substances in dissolved organic matter.This study can provide a scientific basis for the production and operation of the waterworks in the water-receiving area of the water diversion project from the Hanjiang to the Weihe.

关 键 词：引汉济渭 原水掺混 有机物 预氧化 三维荧光光谱 

分 类 号：X524[环境科学与工程—环境工程]