再生水臭氧氧化处理工艺对水质生物稳定性的影响  

Effect of ozone oxidation process on biological stability of reclaimed water

作　　者：林文琪[1,2] 于彩虹[1] 李国强[2] 于童[2] 史晓洁[2] 胡洪营[2] LIN Wenqi YU Caihong LI Guoqiang YU Tong SHI Xiaojie HU Hongying(School of Chemical ＆ Environment Engineering, China University of Mining ＆ Technology, Beijing, Beijing 100083, China State Key Joint Laboratory of Environment Simulation and Pollution Control,School of Environment,Tsinghua University,Beijing 100084,Chlna)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]清华大学环境学院环境模拟与污染控制国家重点联合实验室,北京100084

出　　处：《环境工程学报》2016年第11期6093-6098,共6页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金重点资助项目(51138006)

摘　　要：为了保障再生水水质生物稳定性,控制再生水在储存、输配和利用过程中微生物生长,对再生水臭氧氧化处理工艺水质生物稳定性进行了研究。研究发现,臭氧氧化对再生水厂二级出水的溶解性有机碳（DOC）去除效果有限,对UV254和荧光强度有较好的去除效果,但可导致水样AOC水平升高,水质生物稳定性降低。分析臭氧氧化后不同有机物组分的变化情况,发现臭氧氧化对分子量为0.5~20 k Da有机物有较好的去除效果,而分子量小于0.5 k Da有机物没有明显变化。In order to protect the biological stability of reclaimed water and control the risk of microbial growth during storage, transportation, and utilization of reclaimed water, this paper reported on the biological stability of reclaimed water in the ozone oxidation process. It was found that ozonation had limited effect on the removal of dissolved organic carbon（ DOC）,but had significantly better effect on the reduction of UV254 and fluorescence intensity. However,ozonation increased the level of assimilable organic carbon（ AOC）,thus decreasing the biological stability of the reclaimed water. The change in the different components of organic matter after ozonation was analyzed. The results indicated that ozonation process efficiently removed organics with molecular weight of0. 5—20 k Da,but no significant change was detected for organics with molecular weight less than 0. 5 k Da.

关 键 词：再生水 臭氧氧化 生物稳定性 可同化有机碳 

分 类 号：X703[环境科学与工程—环境工程]