不同水源下臭氧/生物活性炭运行参数的优化

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第36卷期数: 2020年第9期页码: 47-51 栏目: 出版日期: 2020-05-01

Title:: Optimizing Operational Parameters of O3/BAC under Different Water Sources

作者:: 冯俊凯^1,2，陶辉^1,2，陈卫^1,2，文晨^1,2

关键词:: font-size: 10pt; ">臭氧/生物活性炭; 消毒副产物; 臭氧投加量; 炭床停留时间

Keywords:: font-size: 10pt; ">ozone/biological activated carbon (O font-size: 10pt; "> ₃/BAC); disinfection by-products; ozone dosage; carbon bed residence time

摘要:: 近年来，臭氧/生物活性炭工艺在国内得到广泛应用，在控制饮用水中消毒副产物的生成方面起到了重要作用。研究与生产实践表明，臭氧/生物活性炭运行参数的优化对其净水效能的发挥至关重要。针对江苏J水厂采用的H和X两个水质差异较大的水源，建立了中试装置，开展了以控制消毒副产物为目标的臭氧/生物活性炭运行参数优化研究。结果表明：随着臭氧投加量的增加，系统对H与X水源中三卤甲烷生成势（THMFP）的去除率先上升后逐渐平稳，对卤乙酸生成势（HAAFP）的去除率呈现先增加后降低的趋势；随着炭床停留时间的延长，生物活性炭工艺对THMFP、HAAFP的去除率均呈先上升后平稳的趋势。综合考虑THMFP和HAAFP的去除效能，优化后的臭氧/生物活性炭工艺运行参数如下：针对H水源，臭氧投加量为0.5 mg/L，炭床停留时间为12 min；针对X水源，臭氧投加量为2.0 mg/L，炭床停留时间为12 min。

Abstract:: In recent years, ozone/biological activated carbon (O ₃/BAC) process has been widely used in China, which plays an important role in controlling the formation of disinfection byproducts in drinking water. Researches and practices show that optimizing operational parameters of O₃/BAC is very important to improve the purification efficiency. The J waterworks in Jiangsu Province has two water sources (H and X) with great difference in water quality. Therefore, a pilot plant was constructed, and the optimization of operational parameters of O₃/BAC was carried out to control the formation of disinfection byproducts. With the increase of ozone dosage, the removal efficiency of trihalomethane formation potential (THMFP) in H and X water source increased first and then gradually tended to be stable, while the removal efficiency of haloacetic acid formation potential (HAAFP) increased first and then decreased. The removal efficiencies of THMFP and HAAFP both increased first and then tended to be stable with the extension of carbon bed residence time. Considering the removal efficiencies of THMFP and HAAFP, the operational parameters of the optimized O₃/BAC were as follows: ozone dosage and carbon bed residence time were 0.5 mg/L and 12 min for H water source, and those were 2.0 mg/L and 12 min for X water source.

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更新日期/Last Update: 2020-05-01