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1、北京科技大学本科生毕业设计（论文）摘要中水主要是指城市污水或生活污水经处理后达到一定的水质标准，可在一定范围内重复使用的非饮用杂用水，其水质介于上水与下水之间。中水可作为第二水源，可用于工业(如：用作冷却水)及城市杂用、农业灌溉、景观及地表水补充、地下水回灌等，缓解我国水资源危机。本论文以黑龙江省A市60000m3/d的城市中水回用工程为设计对象，进水水质为城镇污水处理厂污染物排放标准(GB18918-2002)一级B标准，主要指标为：CODcr60mg/L，BOD520mg/L，总磷1.0mg/L，总氮20mg/L，氨氮15mg/L，悬浮物20mg/L。本工程出水水质达到城市污水再生利用景观
2、环境用水水质(GB18921-2002)中“城市河道观赏性景观环境用水标准”，主要指标为CODcr50mg/L，BOD510 mg/L，总磷1.0mg/L，总氮10mg/L，氨氮5mg/L，悬浮物20mg/L。针对本工程设计，在多种处理工艺中选择曝气生物滤池法、生物接触氧化法和混凝沉淀法，这三套方案进行了综合比较，由于曝气生物滤池法具有占地面积小，生成污泥量少和无需后续设置沉淀池的优点而被选为主体工艺，而混凝沉淀为辅助工艺。本设计的中水处理工艺流程为：从二级处理的出水到曝气生物滤池中进行脱氮处理，再进入网格反应池进行絮凝反应，后经D型滤池进行过滤，最后排入到清水池，再由综合泵房将水送出进行回用
3、。该过程中产生的反冲洗废水和沉降物污泥由废水调节池收集，通过泵送至二级处理储泥池进行处置。本设计主要内容包括两部分：第一部分为设计说明书，包括：国内外文献综述、常见工艺介绍和工艺选择、比对和论证。第二部分为图纸，包括：水厂平面布置图、高程布置图、曝气生物滤池平面图及剖面图、D型滤池平面图及剖面图、综合泵房平面图及剖面图、清水池平面图、消毒间平面图、废水调节池平面图和加药间平面图。本工程的总投资为3731.77万元，每年的运行成本费用为2408.24万元/年，折合成运行成本吨水费用为1.1元/吨水，符合相关成本要求。总占地面积？关键词：中水回用；曝气生物滤池；混凝沉淀； 工程设计A city o
4、f Heilongjiang Province 60,000m3/d of the water reuse project designAbstractThe meaning of reclaimed water is urban sewage or domestic sewage after treatmen-t to reach a certain of water quality standards,being considered as miscellaneous water which can be non-potable reuse within a certain range.I
5、ts quality ranged between the upriver and the garbage,being a form for the effective utilization of water resources.There are a dozen of ways to the reclamation and reuse,mainly for agricultural irrigation,industr-yial and domestic reuse and municipal use,groundwater recharge,and supplement the surf
6、-ace water.The contents of this thesis is a city of Heilongjiang Province 60,000m3/d of the wa-ter reuse project design.The intrant water quality is consistent with a B standard of urb-an sewage treatment plant emission standards(GB18918-2002).the main indicators:CODcr60mg/L;BOD520mg/L;TP1.0mg/L;TN2
7、0mg/L;NH3N15mg/L;SS20mg/L.For this project,Biological Aerated Filter and biological contact oxidation method in a variety of process to select two options for a comprehensive comparison.Biological A-erated Filter France was chosen because has a small footprint,and generate the advantag-es of sludge
8、less and without follow-up of sedimentation tank.Design of wastewater treatment process as first,come from the secondary treatment effluent to the biological aerated filter,and then be disinfected in the disinfection room b-efore react in grid reaction,finally,after passing by the D-type filter and
9、clear pool,waterbleed off by pumping stations.Backwash wastewater sludge generated in the process anddeposits collected by the regulation pool delivered to the original secondary treatment sl-udge to disposal. The main content of this design consists of two parts:the first part of the design sp-ecif
10、ication,including:domestic and international literature review,commonly used technolo-gy introduction and demonstration of process selection .The second part contains drawings,including:water plant layout diagram,elevation layout,Biological Aerated Filter monomer in Figure D-type filter monomer map,
11、pumping sta-tions monomer Figure drawings .The design meets the initial design requirements,the main design elements include b-iological aerated filter,D-type filter,blower room,sterilization room,elevation layout and gr-aphic layout,etc. The effluent water quality is with a standard of Ornamental l
12、andscape and environ-mental water of the city sewage recycling urban river of the landscape and environmental water quality(GB18921-2002),the mainindicators:CODcr50mg/L;BOD510mg/L;P1.0mg/L;TN15mg/L;NH3N5mg/L;SS20mg/L. Water treatment plant has a total area of 36.40 acres,the cost of 37.3177million y
13、ua-n of investment,operating costs 24082400 yuan/year,equivalent to a total cost of tons of water costs 1.1 yuan/ton water to meet the requirements .Key Words：Biological Aerated Filter； Sewage treatment plant design；reclaimed water reuse- 3 -目录摘要1Abstract2引言11文献综述21.1本课题国外研究进展21.2本课题国内研究进展31.2.1国内中水
14、回用发展状况31.2.2国内中水回用常用工艺41.3课题背景51.4课题开展研究的意义62中水回用研究方案的确定72.1中水回用的研究内容72.1.1中水回用工艺的比选原则72.1.2中水回用工艺的选择因素72.2中水回用的处理对象和技术82.3中水回用的研究方法和主体工艺的确定122.3.1曝气生物滤池工艺122.3.2接触氧化池工艺122.3.3混凝沉淀工艺132.3.4工艺确定132.4滤池填料对比与选择152.4.1生物陶粒滤料152.4.2火山岩生物滤料152.4.3滤料比选和确定152.5消毒技术的论证与选择162.5.1液氯消毒162.5.2二氧化氯消毒162.5.3紫外线消毒1
15、72.5.4消毒技术确定和采纳172.6污泥处理方案的选择183中水回用构筑物工艺设计及计算183.1污染去除程度分析及处理水量计算183.1.1污染去除程度分析与概括183.1.2处理水量计算193.2工艺流程图203.3曝气生物滤池的参数设计203.4鼓风机房的参数设计243.5消毒间的参数设计253.6 D型滤池的参数设计263.6.1絮凝反应池263.6.2 D型滤池283.6.2 操作间313.7清水池的参数与设计323.8废水调节池的参数与设计323.9综合泵房的参数与设计333.10加药间的参数与设计333.11中水回用处理厂的平面布置353.12中水回用处理厂的高程布置364成本估算384.1投资成本估算384.1.1 估算范围384.1.2 估算依据384.1.3 土建费用估算384.1.4设备费用预算394.1.5工程总费用运算404.2 运行成本估算404.2.1估算依据404.2.2运行成本估算41结论43参 考 文 献44附 录45在 学 取 得 成 果46致谢47北京科技大学本科生毕业设计（论文）引言随着人们生活水
