自来水厂生产废水回用风险分析与应急处理效果试验  

Risk Analysis and Performance Experiment of Emergency Disposal for Wastewater Processing and Reuse in Water Treatment Plant

作　　者：苟非洲 马越[1,2] 

机构地区：[1]陕西省水务集团有限公司,陕西西安710004 [2]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《净水技术》2013年第6期23-27,共5页Water Purification Technology

摘　　要：分别采用强化混凝和化学氧化方式,对生产废水回用引起的高浊和水生生物风险进行了应急试验研究。结果表明强化混凝应对生产废水回用高浊风险,具有高效、简易的技术优势。由于浊度物质具有再稳定特性,所需PAC投加量相对较高,在40 mg/L以上。氯、二氧化氯和高锰酸钾均能对剑水蚤实现100%灭活,灭活效果由强到弱依次为ClO2>Cl2>KMnO4。从应急操作方便程度来说,预氯化更加便于推广采用,且工程中氯的投加量有望进一步降低。Enhanced coagulation and oxidation inactivation were adopted respectively as emergency technologies to deal with the risks of high turbidity and aquatic organisms by experiment, which induced by reuse of wastewater in drinking water plant. The results show that enhanced coagulation has such technical advantages as high efficient and convenient while used to treat the high turbidity risk. During enhanced coagulation, high dosage of PAC, usually above 40 mg/L, is necessary since the suspended solids inducing high turbidity in source water has the characteristics of restabilization. Oxidants such as Cl2, ClO2 and KMnO4 have 100 % inactivation function to cyclops and inactivation effect of them in turn is ClO2 〉 Cl2 〉 KMnO4. Considering convenient degree of oxidation operation, prechlorination is the preferred technique in dealing with cyclops risk. Furthermore, the dosage of CI： is hoped to decrease while in practical engineering.

关 键 词：废水回用 风险分析 应急处理 高浊度 剑水蚤 强化混凝 氧化灭活 

分 类 号：TU991.25[建筑科学—市政工程] X174[环境科学与工程—环境科学]