原水藻类暴发事件中藻类和致嗅物质的应急处理  

Emergency Treatment of Algae and Odor-Causing Substances in Raw Water in Algae Outbreak Case

作　　者：姚子鸾 YAO Ziluan(Hengyang Water Investment Group Co.,Ltd.,Hengyang 421000,China)

机构地区：[1]衡阳市水务投资集团有限公司,湖南衡阳421000

出　　处：《净水技术》2023年第2期177-184,共8页Water Purification Technology

摘　　要：为有效应对原水藻类暴发事件,开展藻类应急处置工作,通过对湘江原水及出厂水中藻类、土臭素、2-甲基异莰醇(2-MIB)等指标的持续监测,分析了制水过程中藻类和致嗅物质的去除情况,研究了生产工艺的优化方案并分析了应用效果。研究显示,臭氧-活性炭工艺对藻类和致嗅物质的去除效果显著;常规工艺通过针对性的药剂组合投加可明显降低藻类和致嗅物质含量;单过硫酸氢钾由于活性氧的存在,在实践应用中取得了很好的效果。经过有效应急处置后,出厂水未见明显的生物毒性。通过对不同工艺条件下藻类应急处理注意事项的总结,以期为不同工艺水厂的藻类应急处置提供一定借鉴。In order to effectively respond to the algae outbreak in the raw water and carrying out emergency treatment of algae,removal of algae and odor-causing substances in the process of water treatment plant(WTP),removal of algae and odour-causing substances during water production were analyzed with continuous monitoring of physical and chemical indices,algae,geosmin,2-methylisoborneol(2-MIB),etc.in raw water and finished water.And the optimization scheme of production process was studied and the application effect was analyzed.Result showed that ozone-activated carbon process had a significant effect on the removal of algae and odor-causing substances.Conventional treatment process could significantly reduce the content of algae and odor-causing substances by adding targeted chemical combinations.And potassium monopersulfate had a positve result in practise due to the existing of active oxygen.No significant biological toxicity was found in effluent after effective emergency treatment.By summarizing the precautions for algae emergency treatment under different processes conditions,it is expected to provide reference for the algae emergency treatment in different water treatment processes.

关 键 词：藻类暴发 应急除藻 应急除嗅 生物安全性 土臭素 2-甲基异莰醇 

分 类 号：TU991[建筑科学—市政工程]