中国科学院生态环境研究中心机构知识库
Advanced  
RCEES OpenIR  > 水污染控制实验室  > 学位论文
题名: 高速铁路列车粪便污水磷资源回收技术研究
作者: 欧昌海
学位类别: 硕士
答辩日期: 2016-05
授予单位: 中国科学院研究生院
授予地点: 北京
导师: 刘俊新 ; 郭雪松
关键词: 高速铁路列车,粪便污水,磷回收,污水处理 ; High-speed Rail, fecal sewage, phosphorus recvoery, wastewater treatment
其他题名: The research on technology of phosphorus resource recovery from High-speed Rail’s fecal sewage
学位专业: 环境工程
中文摘要:     随着我国高速铁路的快速发展,高速铁路列车逐渐成为人们出行的首要选择之一,从而带来了列车上由乘客产生的粪便污水量急剧增加的问题。粪便污水中含有高浓度的磷,在新鲜的尿液中,磷的浓度高达215-387 mg/L。如此高浓度的磷,依靠常规生物处理很难达到排放标准,而直接排放会导致环境水体富营养化等污染问题。另一方面,磷资源短缺问题已成为一个全球性的问题,从污水中回收磷资源也逐渐成为一种解决问题的办法。因此,从高速铁路列车粪便污水中回收磷,可以减少磷对环境的污染,同时还可以增加磷资源的来源。
    针对高速铁路列车粪便污水水质不明、磷资源回收技术和粪便污水处理的缺乏,本文研究了高速铁路列车粪便污水的水质、磷回收技术方法,并对回收的磷产品物质成份结构进行分析,最后进行实际应用,考察实际中的处理效果和经济效益分析。主要的研究结论如下:
高速铁路列车粪便污水的水质:pH 7.59 - 8.74、COD 1480 - 4352.5 mg/L、TN 1501.85 - 2008.85 mg/L、氨氮 1257.5 - 1867.5 mg/L、TP 27.32 - 89.49 mg/L、正磷酸盐 26.00 - 80.63 mg/L、Ca2+ 17.88 - 80.63 mg/L 和Mg2+ 0 - 13.55 mg/L。高速铁路列车粪便污水的水质具有低COD/TN 比、高NH4+-N/PO43--P、高PO43--P/TP的特点,说明有必要对其进行处理以改善其C/N 比,同时回收其中的磷具有可行性和经济性。
    Mg 盐、Fe 盐和Ca 盐对高速铁路列车粪便污水中磷的回收率最高分别可达96%、99%和78%;针对本研究采用的高速铁路列车粪便污水,宜进一步采用Mg 盐和Fe 盐进行研究。其中Mg 盐回收高速铁路列车粪便污水中磷的最优工艺参数为:pH 9.47,Mg/P 5.69,反应时间 6.31 min,反应温度 5.03 ℃,磷的回收率响应值可达到95.3%。
      通过Visual MinTeq、XRD、FT-IR、SEM 分析得到Mg 盐和Fe 盐回收高速铁路列车粪便污水中磷的产物,得到:Mg 盐回收的磷产物为鸟类石、磷酸镁和钙与磷酸根化合物,存在晶体特征,外观呈长条/长柱形、或平板形,P 元素重量占比为10.41-17.11%,d0.5=18.852 um;Fe 盐回收的磷产物中,主要成份为Fe 与其它物质化合物,存在磷酸铁和磷酸钙,非晶体结构,无定形态, 元素占比6.09~8.14%,d0.5=60.936 um;Mg 盐回收产物P 元素换算成P2O5 后重量占比可达33.0%,达到高品位磷矿石标准(P2O5 >30%);而Fe 盐回收产物P 元素换算成P2O5后重量占比为15.6 %,属于低品位磷矿石标准(P2O5 <26 %)。
     通过对氨氮的吹脱试验,证明实现回收磷的同时吹脱回收氨氮是可行的;在进水的COD、氨氮和正磷酸盐浓度分别为3235 ± 176.8 mg/L、2297 ±131.1 mg/L和77.13 ± 1.8 mg/L 条件下,经过工艺系统的处理,COD、氨氮和正磷酸盐的出水浓度分别为693.5 ± 17.7 mg/L、269 ± 12.7 mg/L 和1.21 ± 0.15 mg/L,去除率分别为78.6 %、88.3%和98.4%。
英文摘要:     With the rapid development of High-speed Rail, High-speed Rail has gradually become one of the first choices to travel by people, which brought on a sharp increase in the amount of fecal sewage generated by the train passengers. Fecal sewage contains high concentrations of phosphorus in fresh urine, the concentration of phosphorus can up to 215 - 387 mg / L. Such a high concentration of phosphorus is difficult to meet the emission standard just by relying on conventional biological treatment and direct emission will lead to environmental eutrophication and other pollution problems. On the other hand, phosphorus resources shortage has become a global problem, the recovery of phosphorus from sewage is becoming a solution to the problem. Thus, the recovery of phosphorus from High-speed Rail's fecal sewage can reduce phosphorus pollution to the environment, and also can increase the source of phosphorus resources.
      Based on the unknown of High-speed Rail's fecal sewage water quality,phosphorus recycling technology and fecal sewage treatment technology, this paper make a study of the water quality high-speed rail fecal sewage, phosphorus recycling technology and methods, the composition structure of recovered phosphorus products,and finally the actual treatment application, including the treatment effect and economic benefits. The main conclusions are as follows:
     The quality of HIGH-SPEED RAIL's fecal sewage: pH 7.59 - 8.74, Chemical Oxygen Demand (COD) 1480 - 4352.5 mg / L, Total Nitrigen (TN) 1501.85 -2008.85mg / L, Ammonia Nitrigen 1257.5 - 1867.5 mg / L, Total Phosphorus (TP)27.32 - 89.49 mg / L, Orthophosphate 26.00 - 80.63 mg / L, Ca2+ 17.88 - 80.63 mg / L and Mg2+ 0 - 13.55 mg / L. The quality of HIGH-SPEED RAIL's fecal sewage have the characteristics of low COD / TN ratio, high NH4-N / PO4-P ratio, high PO4/ TP ratio, and its high concentration of phosphorus is suitable for its recycling of phosphorus.
     The phosphorus recovery rate can reach 96%, 99% and 78% respectively from high-speed rail fecal sewage by magnesium salt, ferric salt and calcium salt. For the high-speed rail fecal sewage in this study, there should be futher study on magnesium salt and ferric salt. Among those salts, the optimum process parameters of recovering phosphorus from HIGH-SPEED RAIL's fecal sewage by magnesium salt is pH 9.47, n(Mg) / n(P) 5.69, reaction time 6.31 minutes and reaction temperature 5.03 ℃. Under the optimun process parameters, the phosphorus recovery rate can up to 95.3%. By the means of Visual MinTeq, X-Ray Diffraction(XRD), Fourier transform infrared spectroscopy (FT-IR), Scanning Electron Microscope (SEM) analysis, obtaining that the phosphorus product recovered from High-speed Rail's fecal sewage by magnesium salt is struvite, Mg3(PO4)2 and Ca-P precipitations, and its characteristic include crystal, long stripe and long cylindrical appearance, or flat
shape, the weight ratio of phosphorus element is 10.41-17.11% and the median particle size (d0.5) is 18.852 um; the phosphorus product recovered from HIGH-SPEED RAIL's fecal sewage by ferric salt is calcium phosphate, ferric phosphate and other ferric precipitations, and its characteristic include non-crystal, amorphous structure, the weight ratio of phosphorus element is 6.09~8.14% and the median particle size (d0.5) is 60.936 um. The weight ratio of phosphorus element in the product recovered by magnesium salt can reach 33.0% (calculation based on P2O5), which achieve high-grade phosphorus rock (P2O5>33.0%); at the same time,the weight ratio of phosphorus element in the product recovered by ferric salt can reach 15.6% (calculation based on P2O5), which achieve high-grade phosphorus rock (P2O5<26 %).
      Thought the batch test of air stripping to remove ammonia nitrogen, the results prove that simultaneous recovering phosphorus and ammonia nitrogen is feasible;Under the influent concentrations of COD 3235 ± 176.8 mg/L, ammonia nitrogen 2297 ± 131.1 mg/L and orthophosphate 77.13 ± 1.8 mg/L, the effluent concentrations of COD 693.5 ± 17.7 mg/L, ammonia nitrogen 269 ± 12.7 mg/L and orthophosphate 1.21 ± 0.15 mg/L after treating by the process system, and mean while the removal rates were 78.6%, 88.3% and 98.4%, respectively.
内容类型: 学位论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36949
Appears in Collections:水污染控制技术研究室_学位论文

Files in This Item:
File Name/ File Size Content Type Version Access License
欧昌海--高速铁路列车粪便污水磷资源回收技术研究.pdf(3835KB)学位论文--限制开放 联系获取全文

Recommended Citation:
欧昌海. 高速铁路列车粪便污水磷资源回收技术研究[D]. 北京. 中国科学院研究生院. 2016.
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[欧昌海]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[欧昌海]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院生态环境研究中心 - Feedback
Powered by CSpace