摘要
以太湖为水源水,利用静态试验的方式,分别研究在预加氯、加氨以及预加氯后加氨三种条件下臭氧氧化对溴酸盐及溴代有机消毒副产物的控制情况。结果表明,在所研究的条件下,最佳加氯量及加氨量分别为1 mg/L和0.04 mmol/L,碱度的影响在三种条件下基本一致,随着碱度升高(0~200 mg/L),溴酸盐生成量略微上升,同时溴代有机副产物产量略微下降,消毒副产物总量呈小幅上升。预加氯后加氨的方式对溴酸盐的抑制率最大(57.9%),显著高于单独加氯(29.9%)和加氨(39.1%)的方式,但同时协同效应也增加了溴代有机副产物的生成量。
Using source water from East Taihu Lake and by means of static test, control of bromate and bromo-organic disinfection by-products during ozonation was studied under different conditions of pre-chlorination,ammonia addition,as well as ammonia addition following pre-chlorination. Results showed that the best chlorine dosage and ammonia dosage were 1 mg/L and 0.04 mmol/L, respectively. Effect of alkalinity was basically the same under the three conditions, and with the increase of alkalinity （0？200 mg/L）, the production of bromate slightly increased while bromo-organic by-products decreased slightly, and the total amount of disinfection by-products showed a slight increase. By method of adding ammonia following pre-chlorination,inhibition of bromate formation achieved the maximum （57.9%） , which was significantly greater than those by chlorine addition （29.9%） and ammonia addition （39.1%） .However, the amount of bromo-organic by-products also increased due to the synergistic effect.
作者
杨蕴秀
李攀
于水利
张立尖
黎雷
唐玉霖
Yang Yunxiu Li Pan Yu Shui l i Zhang Li j ian Li Lei Tang Yul in(College of Environmental Science and Engineering,Tongji University,Shanghai 200092, China State Laboratory of Pollution Control and Resource Reuse,Tongji University,Shanghai 200092, China Shanghai Water Management Division,Shanghai 200081, China)
出处
《净水技术》
CAS
2017年第6期16-21,29,共7页
Water Purification Technology
基金
基金项目:中小水厂消毒工艺优化及副产物控制技术研究与示范(2015ZX07406-004)
关键词
溴酸盐
溴代有机副产物
东太湖水源
臭氧
预氯化
加氨
消毒副产物
bromate
bromo-organic by-product
East Taihu Lake water source
ozone
pre-chlorination
ammonia dosing
disinfection by-products （DBPs）
