【作者】 张志峰；

【导师】 胡天军；

【作者基本信息】 北京交通大学 ， 环境工程， 2009， 硕士

【摘要】 随着社会经济的发展,城市用水量越来越多,但是伴随着地表水污染,地下水超采,城市供水量却越来越少,大多数城市都面临缺水的困境。而城市污水经过再生处理成为再生水,可以广泛应用于生活、市政、工业、环境等对水质要求较低的地方。再生水逐渐成为城市的第二水源。但是,目前我国城市再生水回用事业发展缓慢回用率很低。究其原因,固然有技术方面的问题,更多的还在于没有对再生水回用作系统性的研究。因此,如何提高再生水回用率促进再生水回用事业的发展具有实际的研究价值。本文正是基于上述背景,在国内外对再生水回用系统研究的基础上,构建了城市再生水回用的系统动力学模型。本文首先阐述了再生水回用系统的构成,主要由再生水、再生水需求子系统、再生水供给子系统和政府行为四个部分组成,然后分析了影响再生水需求子系统的相关因素,包括再生水回用形式、再生水回用用户,并且定性分析了这些因素之间的关系;分析了影响再生水供给子系统的相关因素,包括从污水的收集到再生处理到输送的整个过程,并且定性分析了这些因素之间的关系,为构建再生水回用系统动力学模型提供了基础和前提。接着在上述分析的基础上,建立了再生水回用系统动力学模型,并且以北京市再生水回用为案例进行了模拟预测,提出了政策建议。最后,对本文的研究内容和下一步的研究方向作了总结和展望。更多还原

【Abstract】 With the development of social economy, the water which city demands is more and more, but the water on the ground is polluted while the water under the ground is overused, so the water which the city can supply is very limited, and many cities are confronted with the great problem: lack of water. However, the sewage can become recycling water after it is retextured, the recycling water can be used in many areas where they do not need high quality water such as: daily life, city construction, industry and environment. Gradually, the recycling water becomes the second water source in city. In reality, the rate of recycling water reused is very low. Why the recycling water reused develop so slowly? There are many reasons like technical problem for this result. Of those reasons, the most important reason is that we do not do deep and systemic research about recycling water reused. As a result, doing systemic research to improve the rate of recycling water reused has practical research value to promote recycling water reused.Under this background, basing on the recycling water’s research fruit both home and abroad, this paper builds SD model about the recycling water reused in city. At first, this paper tells us the form about the system of recycling water reused: recycling water, subsystem of recycling water’s demand、subsystem of recycling water’s supply and government’s action. Then, on one hand, this paper analyzes the relative factors which have influence on subsystem of recycling water’ demand: consumer of recycling water reused, formal of recycling water reused, and this paper also analyzes the relationship among the above factors qualitatively. On the other hand, this paper analyzes the relative factors which have influence on subsystem of recycling water’s supply: sewage’s collection, sewage’s retexture, recycling water’s delivery, and this paper also analyzes the relationship among the above factors qualitatively. The analysis in this chain is the basis to build SD model of recycling water reuse. Next, on the basis of above analysis, this paper builds SD model of recycling water reused, this paper also take recycling water reused of Beijing as case to do simulation estimate, and provides some policy advise. Finally, this paper gives a summary for all its content and forecasts its further research.更多还原