中小型水厂水源及其供水水质达标处理研究

发布时间：2018-11-11 17:38

【摘要】：本文以玉环县主要水厂供水水质达标所采取的方法措施为例,研究了中小型水厂水源及其供水水质达标处理。玉环县是浙江省的一个海岛县,年平均降水量只有1460.3毫米且降水时间集中,水厂水源全部来自于水库水,该气候及地理特点导致玉环时常缺水、水库枯水期时间长,同时由于库区周围存在生活和工业等各种污染给水厂的净水处理和管理带来了不小的难度。2006年水质新国标的颁布和实施大大提高了对出厂水水质的要求,玉环县各水厂原有的处理工艺和方法已经无法满足安全饮用水供应的需要,因此,迫切需要对原有工艺进行改造及方法改进。本研究旨在通过对玉环县净水厂的净水工艺及近年来的水质状况进行归类统计,并进行大量的小试、现场试验以及长期运行情况来确定不同水质处理方法,根据水厂实际情况,对水厂的药剂进行了优化,部分水厂的工艺进行了改造以提高出厂水质及水质稳定性,并提出了今后工作重点方向及研究展望。本文从分析玉环主要原水、出厂水及管网水水质开始,重点阐述了水厂工艺改造及水质指标达标处理方法和效果,初步探讨了管网水黄水及稳定性问题。运行表明对坎门、楚门、清港水厂进行的扩容改建,对里墩、陈屿、城关、芦蒲等水厂工艺进行的部分改造达到很好效果,出厂水质完全能达到国家标准且稳定性提高。按照玉环县自来水公司各水厂水源特点,针对其易超标指标进行了长期的跟踪,通过试验确定了如何用高锰酸钾除锰,折点加氯法除氨氮以及在生产过程中碰到的水质污染应急处理方法。通过这些研究工作的积累,为以后进一步提高水质稳定性、保障饮水安全具有重要参考意义。
[Abstract]:Taking the methods and measures adopted in the main water supply plants of Yuhuan County as an example, this paper studies the water sources of small and medium-sized water plants and the treatment of their water quality standards. Yuhuan County is an island county in Zhejiang Province. The average annual precipitation is only 1460.3 mm and the precipitation time is concentrated. The water source of the water works is all from the reservoir water. This climatic and geographical characteristic causes the Yuhuan often lack of water and the dry period of the reservoir is long. At the same time, due to the existence of various kinds of pollution, such as life and industry around the reservoir area, it is difficult to treat and manage the clean water of the water plant. The promulgation and implementation of the new national standard for water quality in 2006 has greatly raised the requirements for the water quality of the factory. The original treatment process and method of Yuhuan water plant can not meet the demand of safe drinking water supply. Therefore, it is urgent to reform the original process and improve the method. The purpose of this study is to classify the water purification process and the water quality in recent years in Yuhuan County Water purification Plant, and make a large number of small trials, field tests and long-term operation to determine different water quality treatment methods, according to the actual situation of the water plant. The reagents of water plant were optimized and the process of some water plants was reformed to improve the water quality and water quality stability. The key work direction and research prospect were put forward. Starting with the analysis of the water quality of the main raw water, the factory water and the pipe network water in Yuhuan, this paper mainly expounds the technological transformation of the water plant and the treatment method and effect of reaching the standard of the water quality index, and preliminarily discusses the problems of the yellow water and the stability of the water in the pipe network. The operation shows that the capacity expansion and reconstruction of Kanmen, Chumen and Qinggang Waterworks, and the partial revamping of waterworks such as Lidun, Chenyu, Chengguan and Lupu have achieved very good results, and the water quality of the factory can reach the national standard and the stability is improved. According to the water source characteristics of the water plants of Yuhuan County Water supply Company, the long-term tracking of its easily exceeding standard index was carried out, and how to remove manganese with potassium permanganate was determined through experiments. Ammonia nitrogen removal and emergency treatment of water pollution encountered in production process by folding-point chlorination method. Through the accumulation of these research work, it has important reference significance for further improving water quality stability and ensuring drinking water safety in the future.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU991.2

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