CAJ | 학술논문

以取自南水北调中线工程的丹江口水库原水作为研究对象,考察了丹江口水库原水中有机物的分子量大小和亲疏水性分子组成规律,并确定了其所适用的强化混凝工艺条件.分离试验表明,丹江口原水中有机物主要以小分子量形式存在.其中,﹤1000组分的溶解性有机碳( DOC)和UV254所占比例最大,分别为39.98％和39.10％,且此区间还具有最高的三卤甲烷生成潜能( THMFP)和含氮消毒副产物生成潜能( N-DBPFP).亲疏水性方面,原水中弱疏水性组分含量最高,疏水性有机物的比例用DOC表征时超过80％.强疏水性组分含量最低但是强疏水性组分的THMFP最大,占总量的57.31％,而各组分的N-DBPFP则相差不大.混凝试验表明,当采用聚合硫酸铁( PFS,4 mg·L-1)和聚丙烯酰胺( PAM,0.4 mg·L-1)处理丹江口原水时,强化混凝效果最好,可实现较为有效的去除浊度(76.33％)、 DOC(25.57％)、 UV254(37.78％)及THMFP (23.16％).本研究成果可为南水北调河南受水区既有水厂升级改造与工艺的优化运行提供有效的理论和技术支持.
이취자남수북조중선공정적단강구수고원수작위연구대상,고찰료단강구수고원수중유궤물적분자량대소화친소수성분자조성규률,병학정료기소괄용적강화혼응공예조건.분리시험표명,단강구원수중유궤물주요이소분자량형식존재.기중,﹤1000조분적용해성유궤탄( DOC)화UV254소점비례최대,분별위39.98％화39.10％,차차구간환구유최고적삼서갑완생성잠능( THMFP)화함담소독부산물생성잠능( N-DBPFP).친소수성방면,원수중약소수성조분함량최고,소수성유궤물적비례용DOC표정시초과80％.강소수성조분함량최저단시강소수성조분적THMFP최대,점총량적57.31％,이각조분적N-DBPFP칙상차불대.혼응시험표명,당채용취합류산철( PFS,4 mg·L-1)화취병희선알( PAM,0.4 mg·L-1)처리단강구원수시,강화혼응효과최호,가실현교위유효적거제탁도(76.33％)、 DOC(25.57％)、 UV254(37.78％)급THMFP (23.16％).본연구성과가위남수북조하남수수구기유수엄승급개조여공예적우화운행제공유효적이론화기술지지.
The best enhanced coagulation conditions for the raw water of Danjiangkou Reservoir of South-to-North Water Diversion Project and the molecular weights as well as hydrophobicity composition of Natural organic matter ( NOM) in the water were investigated in this study. The results showed that the NOM in the raw water of Danjiangkou Reservoir of South-to-North Water Diversion Project was mainly composed of the fraction with a molecular weight of ﹤1 000 and transphilic components. Dissolved organic carbon ( DOC, 39. 98%) and UV254 ( 39. 10%) were the major components. And the fraction with a molecular weight of ﹤1 000 had the highest contents of THMFP and N-DBPFP. In the raw water of Danjiangkou Reservoir, the sum of transphilic and hydrophobic fractions was up to 80%, and the hydrophobic fraction was the minimum contributor of the NOM, but the THMFP of the hydrophobic fraction had the highest percentage. And when the raw water of Danjiangkou Reservoir was treated using polymeric ferric sulfate ( PFS, 4 mg·L -1 ) and poly-acrylamide ( PAM, 0. 4 mg·L-1 ) , the optimal removal rates of turbidity, DOC, UV254 and THMFP were 76. 33%, 25. 57%, 37. 78% and 23. 16%, respectively. The results of this paper can provide theoretical and technological basis for upgrading of the process and operation optimization of original drinking water treatment plants in the intake area of South-to-North Water Diversion Project.