摘要
近年来,我国经济发展势头强劲的珠江流域的水质不断受到污染,珠海市给水厂的水源也受到污染。建议通过臭氧生物活性炭深度处理工艺进一步提高污染物的去除率。研究采用小试试验对臭氧生物活性炭深度处理工艺进行研究。重点考察了臭氧质量浓度为1.0 mg/L、活性炭柱空床时间为15 min和臭氧质量浓度为1.5 mg/L、活性炭空床时间为30 min这两个工况下,2-甲基异莰醇、土臭素、TOC、UV_(254)、浑浊度的去除效果,以及对消毒副产物前体物的控制效果,并通过分子量分布和三维荧光对水中的溶解性有机物进行分析,发现臭氧-生物活性炭工艺可以很好地去除2-甲基异莰醇和土臭素。臭氧-生物活性炭工艺可以有效地去除水中的溶解性有机物,对三卤甲烷和含氮类消毒副产物的前体物也有一定的去除作用,但是对于HAAs卤乙酸类的DBPs消毒副产物前体物的去除效果不佳。同时,文中也给出了臭氧生物活性炭深度处理工艺运行工况的建议。
In recent years,the water quality of Pearl River Basin has been continuously polluted because of strong economic development,and the water source of water treatment plant(WTP)in Zhuhai City has also been contaminated.It is suggested to further improve the removal rate of pollutants through the advanced treatment process of ozone biological activated carbon(O_(3)-BAC).In this study,a lab scale experiment of the advanced treatment process of O_(3)-BAC was used.Focusing on two operation conditions:ozone concentration was 1.0 mg/L with activated carbon column empty bed time was 15 min,ozone concentration was 1.5 mg/L with activated carbon empty bed time was 30 min.2-methylisodecyl alcohol,geosmin,TOC,UV254,turbidity removal effect and control effect on the formation potentials of disinfection by-products(DBPs)was investigated.In addition,dissolved organic matter in the water was analyzed through molecular weight distribution and three-dimensional fluorescence.It was found that ozone-biological activated carbon process can remove 2-methylisocamphanol and geosmin well.O3-BAC advanced treatment process can effectively remove dissolved organic matter in water,and also has a certain removal effect on THMs and N-DBPs trihalomethanes and precursors of nitrogen-containing disinfection by-products.However,the removal effect of HAAs halogen acetic acid DBPs disinfection by-product precursors is not good.At the same time,some suggestions on the operating conditions of O3-BAC advanced treatment process was put forward.
作者
陈仲贇
苏宇亮
孙文俊
王伟博
吴芳芳
胡克武
吴斌
CHEN Zhongyun;SU Yuliang;SUN Wenjun;WANG Weibo;WU Fangfang;HU Kewu;WU Bin(School of Environment,Tsinghua University,Beijing 100084,China;Research Institute for Environmental Innovation<Suzhou>Tsinghua,Suzhou 215000,China;Zhuhai Water Environment Holdings Group Ltd.,Zhuhai 519000,China)
出处
《净水技术》
CAS
2021年第11期49-55,70,共8页
Water Purification Technology
基金
国家重点研发计划(2019YFC0408700)
自然科学基金(51778323,51761125013)
国家科技重大专项(2012ZX07404-002,2017ZX07108-002,2017ZX07502003)。
关键词
臭氧-生物活性炭
深度处理
饮用水
嗅味
水厂
ozone-biological activated carbon(O3-BAC)
advanced treatment
drinking water
odor
water treatment plant(WTP)
