乡镇污水处理工艺技术应用研究

发布时间：2018-04-04 11:56

本文选题：乡镇　切入点：生活污水　出处：《西南科技大学》2017年硕士论文

【摘要】：近年来,随着农村经济和农村城镇化的快速发展,乡镇人口的变化、居住方式的变化,乡镇基础设施建设的迟后,导致环境污染问题突出,严重制约了当地经济的发展和精神文明的建设,使农村生态环境成为关注的重点。污水排放和水污染是其主要的一个方面。本文在阅读大量文献资料的基础上,参考、比较国内农村乡镇生活污水处理方式、处理工艺技术,结合绵阳市街子镇的自然环境、农民的居住类型、生活污水排放特点,探讨了适宜于街子镇生活污水处理方式和处理工艺。街子镇是以农业为主的农村乡镇。人们以集居点、村组和散户状况居住,生活污水排放形式为集中排放、部分汇集和散排。污水难以统一收集处理,污水水量、水质及排放属于典型的农村特点。针对污水集中排、部分汇集和散户排放,本文提出处理方式为集中排的污水采用污水处理站,选用生物接触氧化工艺;小量汇集的污水采用改良A2O工艺、一体化污水处理系统;散户排放的污水,因地制宜,采用无动力、低成本沼气池预处理+湿地工艺技术,出水农灌利用。污泥统一规划污泥处理处置或资源化利用。街子镇是一个典型农村乡镇,农民的居民类型和生活污水的排放特点在国内农村乡镇具有普遍性。本文针对街子镇提出的生活污水处理方式和处理工艺以及运行管理建议,在国内应具有较好的应用推广价值和推广意义。
[Abstract]:In recent years, with the rapid development of the rural economy and rural urbanization, the changes of the population of villages and towns, the change of the way of living, and the late construction of the infrastructure of villages and towns, the problem of environmental pollution is prominent.It seriously restricts the development of local economy and the construction of spiritual civilization, and makes the rural ecological environment become the focus of attention.Sewage discharge and water pollution are one of its main aspects.On the basis of reading a large number of documents and materials, this paper compares the domestic rural towns and townships' domestic sewage treatment methods, treatment technology, combined with the natural environment of Mianyang Jiezi Town, the living types of farmers, and the characteristics of domestic sewage discharge.This paper discusses the treatment method and process of domestic sewage suitable for Street Town.Street town is a rural township based on agriculture.People live in the area, village group and individual households. The discharge form of domestic sewage is concentrated discharge, partial collection and scattered discharge.Sewage is difficult to be collected and treated uniformly. The quantity, quality and discharge of sewage are typical rural characteristics.In view of the centralized discharge of sewage, partial collection and individual discharge, this paper puts forward that the treatment way is to adopt sewage treatment station, biological contact oxidation process, improved A2O process and integrated sewage treatment system for small amount of collected sewage.According to the local conditions, the sewage discharged by individual households is treated with the technology of pretreatment of wetland without power and low cost biogas tank, and the effluent is used for agricultural irrigation.Sludge unified planning sludge treatment and disposal or resource utilization.Jiezi Town is a typical rural town. The types of peasants and the characteristics of domestic sewage discharge are universal in China.In this paper, it is suggested that the domestic sewage treatment method, treatment process and operation management should have better application and popularization value and significance in our country.
【学位授予单位】：西南科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X703

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