二氧化氯预氧化半生产试验研究
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摘要
通过在水厂进行的半生产性对比试验得出,二氧化氯预氧化的投加量为1.0mg/L时,就可较为彻底地去除藻污染,并有效控制藻毒素的释放;能够显著提高对浊度、色度、藻类和有机物的去除率;能够抑制藻类在平流沉淀池中的再生长。游离二氧化氯能稳定持续地氧化积累在滤池中的藻类及胞内物质,有效解决了滤后水中藻毒素及致嗅物质升高问题。二氧化氯预氧化可以作为应急除藻、解决嗅味问题的有效措施,具有一定的推广应用价值。
Through comparison experiments in the waterworks with a pilot scale,the result indicated that algae could be removed and the MC-LR could be effectively controlled when ClO2 was dosed at 1.0 mg/L.The removal efficiency of turbidity,color,algae and organics could be greatly improved obviously,reproduction of algae in horizontal sedimentation tank could be restrained,free ClO2 could keep a satisfable level to oxidize the algae and intracellular substance accumulated in the filter,MC-LR and odors could be effectively controlled.ClO2 preoxidation could be an effective treatment method for removing algae and odor in emergency,which would have good prospect for practice in future.
Through comparison experiments in the waterworks with a pilot scale,the result indicated that algae could be removed and the MC-LR could be effectively controlled when ClO2 was dosed at 1.0 mg/L.The removal efficiency of turbidity,color,algae and organics could be greatly improved obviously,reproduction of algae in horizontal sedimentation tank could be restrained,free ClO2 could keep a satisfable level to oxidize the algae and intracellular substance accumulated in the filter,MC-LR and odors could be effectively controlled.ClO2 preoxidation could be an effective treatment method for removing algae and odor in emergency,which would have good prospect for practice in future.
引文
[1]许保玖.给水处理理论[M].北京:中国建筑工业出版社,2000.
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[8]黄晓东.S市富营养化水源水化学预氧化试验研究及初步评价[J].给水排水,2005,27(7):19.23.
[9]Aieta M E,Berg J D.A Review of chlorine dioxide indrinking water treatment[J].J AWWA,2004.76(1):62.72.
[10]Lykins B W,Griese M H.Using chlorine dioxide for trihalomethane control[J].J AWWA,2002,78(6):88.93.
[2]时红.水质分析方法与技术[M].北京:地震出版社,2001.
[3]张金松.饮用水二氧化氯净化技术[M].北京:化学工业出版社.
[4]尤作亮.二氧化氯净化微污染水源水研究进展[J].深圳自来水,2006(1):13.17.
[5]黄君礼.二氧化氯对水中病毒、藻类和浮游动物的灭活效果[J].环境化学,1996,15(4):347.354.
[6]黄君礼.二氧化氯对水中酚类化合物的去除效果[J].环境化学,1998,17(2):174.179.
[7]徐振林.二氧化氯在水厂灭藻除臭中的应用[J].净水技术,2005,20(1):31.32.
[8]黄晓东.S市富营养化水源水化学预氧化试验研究及初步评价[J].给水排水,2005,27(7):19.23.
[9]Aieta M E,Berg J D.A Review of chlorine dioxide indrinking water treatment[J].J AWWA,2004.76(1):62.72.
[10]Lykins B W,Griese M H.Using chlorine dioxide for trihalomethane control[J].J AWWA,2002,78(6):88.93.
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