兆丰废水处理设计方案

承德兆丰钢铁有限公司废水回收利用工程设计方案唐山滨海冶金技术咨询有限公司2010年4月目录1概述············································································51.1项目名称及地点························································51.2编制依据·································································51.3设计范围及原则························································51.3.1设计范围··························································51.3.2设计原则··························································51.4执行的技术规范及标准···············································61.6地质勘察情况···························································71.6.1工程地质概况····················································71.6.2地质抗震··························································72工程技术方案·································································72.1废水回收利用应关注的问题·········································72.2工程规模及进出水水质···············································82.2.1工程规模··························································82.2.2设计水质··························································82.2.3废水来源及主要污染物········································82.3工艺设计·································································92.3.1废水处理厂工艺设计···········································94建筑及结构设计····························································124.1建筑设计·······························································124.2结构设计·······························································124.2.1厂区地形、地貌及工程地质概况··························124.2.2抗震设计························································125电气及自控仪表设计······················································135.1电气系统·······························································135.1.1供电系统·························································135.1.3主要设备控制方式·············································145.1.4防雷接地方式···················································145.1.5照明·····························································145.2仪表·····································································145.2.1概述·····························································145.2.2仪表配置·························································156给水排水·····································································156.1给水··································································156.2排水··································································157采暖、通风··································································157.1设计依据·······························································157.2通风·····································································167.3采暖·····································································167.3.1设计范围························································167.3.2设计依据·························································167.3.3主要生产车间室内冬、夏季温度、湿度要求···········167.3.4热源·······························································168劳动定员·····································································179投资估算·····································································17附图：废水处理站平面布置图1(本方案，投资约861万元)；废水处理站平面布置图2(含脱盐，投资约2300万元)；废水处理站平面布置图3(含脱盐，投资约3500万元)；承德兆丰钢铁有限公司废水回收利用工程51概述1.1项目名称及地点项目名称：承德兆丰钢铁有限公司废水回收利用工程项目地点：承德兆丰钢铁有限公司1.2编制依据承德兆丰钢铁有限公司废水回收利用工程相关要求；《给水排水设计手册》；国家及地方现行的有关法规、标准和规范。1.3设计范围及原则1.3.1设计范围本工程的设计范围为承德兆丰钢铁有限公司废水处理厂，主要包括以下设计内容：1、承德兆丰钢铁有限公司废水处理厂的工艺设计；2、废水处理厂配套的建筑、结构、电气、仪表、采暖通风等设计；1.3.2设计原则以承德兆丰钢铁有限公司总体规划为指导，遵循国家及行业的相关技术政策，因地制宜，采用高效紧凑、节省占地、方便管理，以降低造价，减少运行成本；在保证处理后的回用水水质标准的同时，尽量减少投资以期达到社会效益、环境效益和经济效益三者的有机统一；承德兆丰钢铁有限公司废水回收利用工程6废水处理厂总平面布置结合厂区现状，遵循功能分区明确、建(构)筑物布置紧凑、留有深度处理发展余地等原则；1.4执行的技术规范及标准1、《污水综合排放标准》(GB8978-1996)2、《泵站设计规范》(GB/T50265-97)3、《通用用电设备配电设计规范》(GB50055-93)4、《电力装置的继电保护和自动装置设计规范》(GB50062-92)5、《建筑结构设计统一标准》(GB50068-2001)6、《室外排水设计规范》7、《工业循环冷却水处理设计规范》(GB50050-95)8、《污水再生利用工程设计规范》(GB50335-2002)9、《建筑结构荷载规范》(GB50009-2001)10、《混凝土结构设计规范》(GB50010-2002)11、《建筑地基基础设计规范》(GB50007-2002)12、《建筑抗震设计规范》(GB50011-2002)13、《低压配电装置及线路设计规范》(GB50054-95)14、《工业与民用配电系统设计规范》(GB50052-95)1.5设计气象参数略承德兆丰钢铁有限公司废水回收利用工程71.6地质勘察情况1.6.1工程地质概况由于拟建废水处理厂地勘资料暂缺1.6.2地质抗震地震基本烈度：按7度抗震设防。2工程技术方案2.1废水回收利用应关注的问题废水经处理后不断循环使用，由于水的温度升高、水流速度的变化、水的蒸发，各种无机离子和有机物质的浓缩富集，灰尘杂物的进入，造成设备腐蚀和微生物的大量滋生，以及由此形成的黏泥污垢堵塞管道等问题。循环水浓缩过程中各种盐类如氯化物、硫酸盐、碳酸盐会逐渐增加，Cl-、SO42-离子浓度增高时会加速碳钢的腐蚀。因此，循环水处理时，含盐量和主要离子浓度的控制应按照《工业循环冷却水处理设计规范》(GB50050-95)的要求控制。循环水中的微生物(一般指细菌和藻类)也是影响设备使用和热传导的原因之一。在新鲜水中，细菌和藻类较少，但在循环水中，由于养分的浓缩，水温的升高和日光照射，给藻类和细菌创造了迅速繁殖的条件。大量细菌分泌出的黏液像黏合剂一样，能使水中漂浮的灰尘杂质和化学沉淀物等黏附在一起，形成黏糊糊的沉积物黏附在换热器的传热表面上或管道上，影响传热效率或堵塞管道。承德兆丰钢铁有限公司废水回收利用工程82.2工程规模及进出水水质2.2.1工程规模根据承德兆丰钢铁有限公司废水回收利用工程的要求，结合企业发展实际情况，废水处理厂的总规模为500m3/h，2.2.2设计水质根据承德兆丰钢铁有限公司废水回收利用工程的有关资料和要求，废水的进、出水水质按下列指标进行设计，详见表2-1、2-2。表2-1进水水质主要指标项目厂方提供指标项目厂方提供指标PH值油悬浮物含盐量Ga2+(CaCO3)电导率总碱度(CaCO3)总磷(PO43-)总硬度(CaCO3)氯离子表2-2出水水质主要指标项目净化水PH值7～8悬浮物mg/l≤10油mg/l≤52.2.3废水来源及主要污染物承德兆丰钢铁有限公司废水来源主要来自烧结、炼铁、炼钢、制氧厂的承德兆丰钢铁有限公司废水回收利用工程9工业废水和生活污水(约20%)，以及各生产车间在用水过程中跑、冒、滴、漏的水和冲地水等，其主要污染物有CODcr、BOD5、SS、油、溶解盐等。2.3工艺设计2.3.1废水处理厂工艺设计2.3.1.1设计规模工程设计规模：500m3/h，预留废水深度处理用地。2.3.1.2工