文献类型：期刊文献

中文题名：离子交换法连续流处理受硝酸盐污染的地下水

英文题名：Treatment of Groundwater Contaminated by Nitrate with Ion Exchange Processes

作者：曹国民[1];盛梅[1];费宇雷[1];孟科伟[1];史伟伟[1];俞益峰[1]

机构：[1]华东理工大学环境工程研究所,上海200237

年份：2011

卷号：30

期号：5

起止页码：90

中文期刊名：净水技术

外文期刊名：Water Purification Technology

收录：CSTPCD

基金：水体污染控制与治理科技重大专项子课题(2008ZX07425-001-04)

语种：中文

中文关键词：地下水;硝酸盐;离子交换;再生;反硝化

外文关键词：groundwater nitrate ion exchange regeneration denitrification

摘要：采用普通阴离子交换树脂(Purolite A 300E)和硝酸盐选择性离子交换树脂(Purolite A 520E)处理受硝酸盐污染的模拟地下水,通过树脂床层的水流速度越慢,相应的穿透体积越大;用氯化钠水溶液再生饱和的离子交换树脂时,需要的再生液体积随氯化钠浓度的下降而增加,但实际消耗的氯化钠量却随其浓度的下降而减少,氯化钠适宜浓度在3%左右;当地下水中硫酸盐含量较高时,应采用硝酸盐选择性离子交换树脂,但该树脂比普通树脂难再生;树脂再生过程中产生的废液可用SBR工艺进行反硝化脱氮,硝态氮浓度为550 mg/L的再生废液在SBR池中搅拌反应10 h,就能实现完全反硝化。
Abstract The nitrate contaimination groundwater was treated by a standard anion resin （Purolite A 300E） and a nitrate selective resin （Purolite A 520E） in columns, respectively. The water flowrate through the column was slower, the corresponding breakthrough volume was bigger. The needed volume of NaC1 solution was increased with decreasing of NaC1 concentration during regeneration of exhausted resins with NaC1 solution, but the actual sodium chloride consumption was decreased with decreasing of NaC1 concentra- tion, and the NaC1 concentration controlled at about 3 % is suitable. When the sulfate concentrate in groundwater was higher, the ni- trate selective resin should be used, but regeneration of this resin was more difficult than that of standard anion resin. The waste brine produced during regeneration process can be treated with biological denitrifieation, and waste brine with 550 mg NO^3-N/L treated in a sequencing batch reactor （SBR） for 10 h, almost all nitrogen could be removed.