本文選題：雨水利用　切入點：雨水水質　出處：《浙江大學》2015年碩士論文　論文類型：學位論文

【摘要】：持續(xù)的人口增長和城市化、工業(yè)化快速發(fā)展導致水資源短缺、水質惡化、洪澇災害以及生態(tài)環(huán)境惡化等問題日益嚴峻。城市化發(fā)展增加了不透水區(qū)域,使城市地區(qū)喪失了雨水滲透和蓄水功能而帶來城市內(nèi)澇、徑流污染、熱島效應、雨島效應和氣候變化等一系列問題。雨水資源利用對解決城市水資源短缺或者過量扮演著重要角色,對城市徑流控制和水文循環(huán)過程修復有著顯著效益。而目前國內(nèi)外對雨水資源的利用大多僅停留在水資源的天然職能上,對雨能的利用仍是空白,本文對此進行了探討。電絮凝技術廣泛應用于高濃度工業(yè)廢水、生活污廢水和微污染水等處理,查閱國內(nèi)外文獻極少有學者將電絮凝法應用于雨水處理凈化,為此本文開展研究探討雨水電絮凝處理工藝的運行效果。 首先以杭州為例從降雨量和雨水水質兩方面分析城市雨水收集利用的優(yōu)越條件,探討城市屋面雨水收集利用的可行性；接著系統(tǒng)地介紹了雨水雨能聯(lián)合利用模式(RainwaterRainEnergy, RWRE),并以金華市小型雨水電站示范工程為例進行雨能資源利用的可行性分析。通過電絮凝分批試驗考察不同陰極材料的除污效果及除污機理,研究表明電絮凝除污效果整體較好,污染物主要通過電氧化還原、電絮凝和電氣浮去除,且A1-A1電絮凝比A1-Ti電絮凝的除污效果更好。通過正交試驗確定電極間距、初始PH、電流密度、反應時間和沉淀時間對污染物去除率影響的顯著程度及電絮凝處理屋面雨水的綜合最佳條件,得到雨水電絮凝處理工藝的最佳條件是電極間距為2cm,PH為8,電流密度為30A/m2,反應時間為30min,沉淀時間為20min。此條件下色度、濁度SS、COD、TP、NO3--N、 Fe、Zn、Mn及Cr6+的去除率分別為89.29%、84.43%、89.58%、25.71%、40.63%、24.00%、77.78%、100%、63.31%和85.71%,且出水各指標值都滿足城市雜用水標準、景觀環(huán)境用水標準、生活雜用水標準和地表水環(huán)境質量標準Ⅲ類水要求。在此基礎上進行雨水電絮凝連續(xù)試驗研究,結果表明雨水電絮凝處理工藝運行穩(wěn)定且出水水質較好,能滿足上述回用水標準要求,其中對色度、濁度和SS的去除率較高分別為84.95%～88.35%、76%～100%和76.19%～95.24%。能耗分析表明雨水電絮凝處理工藝的電能消耗為1.002kW·h/m3,以杭州市電價為例處理1m3屋面雨水需要花費0.539元,處理成本較低。因此雨水電絮凝處理工藝技術可行、處理效果好、成本低廉,其小規(guī)模雨水凈化能滿足日常雜用水要求,后續(xù)可根據(jù)RWRE模式建立集屋面雨水收集、發(fā)電、凈化及供水于一體的雨水綜合利用系統(tǒng)。
[Abstract]:The continuous population growth and urbanization, the rapid development of industrialization lead to the shortage of water resources, the deterioration of water quality, the flood disaster and the deterioration of ecological environment, etc. The development of urbanization has increased the impermeable areas, Causing the loss of Rain Water's function of infiltration and water storage in urban areas, resulting in urban waterlogging, runoff pollution, heat island effect, Rain island effect and climate change are a series of problems. Rainwater utilization plays an important role in solving the shortage or excess of urban water resources. At present, the utilization of Rain Water resources at home and abroad is mostly confined to the natural function of water resources, and the utilization of rain energy is still blank. The electroflocculation technology is widely used in the treatment of high concentration industrial wastewater, domestic wastewater and micro-polluted water, and few scholars at home and abroad have applied the electroflocculation method to the purification of Rain Water. In this paper, the effect of Rain-Hydropower flocculation treatment process is studied. Firstly, taking Hangzhou as an example, this paper analyzes the advantages of collecting and utilizing the urban Rain Water from the aspects of rainfall and Rain Water water quality, and probes into the feasibility of collecting and utilizing the urban roof Rain Water. Then, the rainwater Rainwater Rainenergy (RWREE) combined utilization model of Rain Water is introduced systematically, and the feasibility analysis of rain energy resource utilization is carried out by taking the demonstration project of small rain hydropower station in Jinhua City as an example. The different cathode materials are investigated by electroflocculation batch test. Decontamination effect and decontamination mechanism, The results show that the effect of electroflocculation is better than that of A1-Ti electroflocculation. The results show that the removal of pollutants is mainly through electrooxidation, electroflocculation and electric floatation, and A1-A1 electroflocculation is better than A1-Ti electroflocculation, and the electrode spacing is determined by orthogonal test. The effect of initial PH, current density, reaction time and precipitation time on the removal rate of pollutants and the comprehensive optimum conditions for electroflocculation treatment of roof Rain Water were studied. The optimum conditions are as follows: the electrode spacing is 2 cm 路m ~ (-1) PH = 8, the current density is 30 A / m ~ (2), the reaction time is 30 min, and the precipitation time is 20 min. The removal rates of turbidity, Cr6 and Cr6 are 89.29 and 84.43, respectively, and the removal rates of turbidity, SS, and Cr6 are 89.29 and 84.43, respectively. The removal rates of turbidity, SS, COD, and Cr6 are 89.29 and 84.43, respectively. The removal rates of turbidity are 24.77.78100%, 63.31% and 85.71%, respectively, and the water standards for landscape and environment are met. The standard of domestic miscellaneous water and the standard of environmental quality of surface water are Class 鈪，

本文編號：1639655