给水排水专业 摘要:摇蚊幼虫(红虫)难以被常规的给水排水专业水处理工艺有效地去除,成为又一困扰水厂正常生产运行的给水排水专业水处理问题。本文首先介绍了摇蚊幼虫的生活习性及其在水处理工艺中的分布规律,然后对其生理特性与环境因子之间的关系进行了论述;并就近年来采用物理法、化学法和生物法防治水处理工艺中摇蚊幼虫污染的研究进展、现状和局限性进行了较为系统的分析,展望了摇蚊幼虫污染防治技术的研究前景,指出目前控制饮用水中摇蚊幼虫污染必须将水源水质水控制、污染治理与净水工艺处理结合起来,优化水处理工艺和强化水源水体保护是根本保障。 关键词:水处理 摇蚊幼虫 防治
A Review on Preventions of Chironomus larva Pollution in Water Treatment System CUI Fu Yi1 SUN Xing Bin1 ZHANG Iin Song2 XU Feng1 LIU Li Jun2
(1-Sch. of Municipal & Environ.Engin,Harbin Institute of Technology,Harbin 150090
2- Water Research Institute ,Shenzhen Water Group,Shenzhen 518001) Abstract: In all the problems in water supply, the remove of Chironomus larva (red worm) from drinking water has become one of the most important, and it is very difficult to effectively remove by conventional methods. So in order to deal with the problem, both the living habit and distribution of Chironomus larva in the water treatment system and the methods in removing Chironomus larva at present were introduced in this article. Meanwhile, the relationship between its physiological characteristic and environmental factors was demonstrated. Also the research status、advantage and limitation of different methods in the remove of Chironomus larva were analyzed systematically and some scientific tendencies were prospected. It was suggested that enhancing the management to the raw water and optimizing the drinking water treatment processes were the feasible ways to effectively control the pollution. Key word: water treatment; chironomus larva; prevention 摇蚊幼虫(红虫)大量孳生是由于水体污染导致的富营养化而变得日益突出的困扰供水界的新问题。摇蚊幼虫的抗氧化性较强,常规水处理的消毒工艺难以将其有效地杀灭,使得在我国一些大中城市的水厂清水池乃至管网水中都曾发现过摇蚊幼虫。在我国南方一些城市,由于气候具有常年温暖潮湿的特征,适于昆虫繁殖,问题更加突出。摇蚊幼虫不仅给用户带来了不良的感官影响,引起用户对水质信心的下降与恐慌,更为重要的是摇蚊幼虫还是人类多种传染疾病的传播媒介,对居民的饮用水安全带来极大的威胁。 1.摇蚊幼虫的生活习性及分布 摇蚊分属昆虫双翅目摇蚊科[1],由于身体内含有血红蛋白而成红色。摇蚊的生活史经过卵—幼虫—蛹—成虫四个阶段。有的两年只有一个世代,有的一年却有七个世代,但大多数每年有两个世代,第一个在春季(5~6月),第二个在夏季(8~9月)。
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