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王海鸥等:氯胺和联合氯胺控制消毒副产物的研究

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and Engineeri ng , 2009, 31:45-52. 二氧化钛催化臭氧化对有机物的去除效能及载体的影响

王胜军1, 马 军1, 2, 杨忆新1, 张 静1

(1. 哈尔滨工业大学市政环境工程学院, 哈尔滨150090; 2. 哈尔滨工业大学城市水资源开发利用(北方 国家工程研究中心, 哈尔滨150090

摘 要:制备了负载于不同载体上的纳米二氧化钛催化剂并将其应用于催化臭氧化工艺, 研究了催化臭氧化松花江水过程中有机物的去除与变化。经GC -MS 检测, 松花江原水中含有50种有机物, 大部分为酯类。经单独臭氧氧化之后, 水中仍剩余36种有机物, 单独臭氧化对有机物总峰面积的去除率为2315%。纳米二氧化钛催化臭氧化工艺能够大幅提高对有机物的去除效率, 特别是对酸和酯类物质的去除。二氧化钛的催化能力在一定程度上受载体的影响, 用沸石作载体时的催化臭氧化效果要优于用硅胶和陶粒作载体。以二氧化钛/沸石为催化剂时, 催化臭氧化处理后水中仅残留20种有机物, 对有机物总峰面积的去除率也高达6215%。

关键词:臭氧催化氧化; 臭氧; 二氧化钛; 有机污染物 (上接第767页

Study on contro l of disi nfecti on by -products w ith chl ora m i nes and co m bi ned chlora m i nes WANG H a-i ou 1, CHEN Zhong -li n

2(1. C oll ege of C ivilE ngi neeri ng and A rch it ecture , I nn erM ongoli a Un i versity ofTechn ol ogy , H ohhot 010051, Ch i n a ; 2. StateK ey Laboratory ofU rban W a -

t er Res ource and Env i ron m en t , H arb i n Instit u te ofTechnol ogy , H arb i n 150090, C h i na Abst ract :Labo ratory -scale test w as carried out for so m e types co m bined disi n fection process :short ter m free ch l o -rine p l u s chlora m ines disi n fecti o n(C l 2+NH 3, chlora m i n es d isi n fection(NH 2C l, sho rt ter m chlori n e d i o x i d e p l u s ch l o ra m ines d isinfection(C l O 2+NH 2C l and short ter m ozone plus ch lora m i n es disi n fecti o n(O3+NH 2C l. The re -su lt sho w s tha t use o f alter nate d i s infectants can availab l y con tro l the concentration d isinfection by -products . I n the case o f the sa m e infl u en, t ch l o ro f o r m , d ichloroacetic ac i d and trich l o roacetic acid produced in ch lora m i n es disinfec -ti o n process are respectively 7118%~8712%,

5812%~7613%and 8910%~9618%lo w er than those in conven -ti o na l free ch l o rine disi n fecti o n process . The d isinfection by -pr oduct leve l i n w ater that disi n fected by C l O 2+NH 2C l and O 3+NH 2C ls w as re m arkab l y l o w er than w hatw as treated on ly by ch l o ra m ines . Through the analysis of the car -cinogenic risk o f disinfecti o n by -pr oducts , chang ing t h e disi n fection process can si g n ificantly reduce the carcinogen -ic risk of ch l o ri n ation .

K ey w ords :chlora m ines d isi n fection ; disi n fecti o n by -product (DBPs; tri h alo m ethane (THM s; haloacetic ac i d i n #

773#第6期王胜军等:二氧化钛催化臭氧化对有机物的去除效能及载体的影响

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