摘要
为了研究臭氧-活性炭工艺对某市饮用水中消毒副产物和生物稳定性的影响，在原有工艺的基础上，于反应池前增加了预臭氧氧化工艺，分两级投加臭氧，同时将臭氧尾气回收，以增加水体中臭氧的吸收率以及混凝、反应、沉淀的效果。系统稳定运行6个月，出水浊度为0．2NTU左右，出水色度为2～3度，CODM。出水浓度为0．6mg／L，平均去除率为88％，氨氮经折点加氯后可降至0．2mg／L以下，均达到饮用水标准。对于试验水质条件下，臭氧化与活性炭吸附联合作用能够有效地去除水中AOC和氯化消毒副产物前质。
In order to study the impact of ozone -activated carbon process on disinfection by -products and bio -stability in the drinking water of a city. Based on the original process, the pre - ozone oxidation process was added before the reaction tank, including two - point dosing of ozone and the exhaust gas reclamation, which could improve the aqueous absorption rate of ozone, as well as the performances of coagulation, reaction, sedimentation. The system was stably operated for 6 months with the effluent turbidity of about 0.2 NTU, the effluent color of 2 - 3 degrees, effluent CODMn of 0. 6 mg/L, the average removal efficiency of 88% and the ammonia nitrogen being reduced to below 0.2mg/L after the break - point chlorination, all of which are up to standards of drinking water. Under the conditions of water quality in experiment, the combination of ozone - oxidation and activated carbon adsorption can effectively remove AOC and precursors of chlorination disinfection by - products.
出处
《环境科学与管理》
CAS
2009年第12期52-54,69,共4页
Environmental Science and Management
基金
黑龙江工程学院科学研究项目(B07004)
关键词
饮用水
臭氧-活性炭工艺
消毒副产物
AOC
drinking water
ozone - activated carbon process
disinfection by - products
AOC
