富阳市大源镇污水处理和中水回用工程

富阳市大源镇污水处理和中水回用工程环境影响报告书（简要本）HangzhouAcademyofEnvironmentalScience国环评乙字号第2004号二OO六年十二月目录1.项目概况······················································································11.1项目由来······················································································11.2项目基本内容················································································12.工程内容······················································································12.1拟建项目工程内容··········································································12.2工程分析······················································································33.选址周围环境及保护目标·································································43.1环境质量现状················································································43.2环境保护目标················································································54.环境质量影响预测评价主要结论························································64.1水环境质量影响预测评价·································································64.2大气环境质量影响预测评价····························································104.3声环境质量影响预测评价·······························································104.4固体废物环境影响分析···································································115.对策措施·····················································································115.1清洁生产措施···············································································115.2水、气、声、固废污染治理措施·······················································115.3主要的环保监管措施·····································································135.4征地拆迁安置··············································································145.5环保投资····················································································156.总量控制及公众参与·····································································166.1总量平衡方案及措施·····································································166.2公众参与····················································································167.环境可行性分析及评价结论····························································178.环评总结论·················································································198.1环评建议····················································································198.2环评总结论·················································································20附图：附图1建设项目地理位置图附图3建设项目环境概况及保护目标分布图附图4建设项目总体平面布置图附件：附件1浙发改办受理投资[2005]145号，浙江省发展和改革委员会项目受理通知书附件2建设项目规划红线富阳市大源镇污水处理和中水回用工程环境影响报告书简要本杭州市环境保护科学研究院-1-1.项目概况1.1项目由来富春江南岸的大源镇是富阳市东南部中心镇，以轻工业为主，商业服务为辅的现代化综合职能的中心城镇，也是富阳市造纸企业集中分布区域之一。造纸企业排放的大量废水一定程度上影响着区域水环境，对富春江下游居民的生产生活带来潜在威胁。为保护富春江水质，保护杭州市长远的上游水源，为富阳市经济的可持续发展创造有利条件，富阳市人民政府决定实施富阳市大源镇污水处理和中水回用工程，日处理污水能力10万m3/日。该工程拟建地为大源镇浦东村（即镇区北侧，靠近过境公路），总占地面积12.18公顷，折合182.7亩，其中污水处理厂工程占地7.615公顷，回用水厂工程占地4.565公顷。1.2项目基本内容项目名称：富阳市大源镇污水处理和中水回用工程；项目立项：根据浙江省发展和改革委员会的浙发改投资[2006]663号文，同意“富阳市大源镇污水处理和中水回用工程”的建设实施。工程性质：新建项目；项目投资：27417万元。建设规模：根据项目建议书及可研，富阳市大源镇污水处理和中水回用工程内容包括污水处理工程和污水回用工程，以及配套管网。富阳市大源城镇综合污水处理工程规模为10万m3/d；配套管网管道总长39.83km，管径d300～d1800；回用水处理厂规模7.0万m3/d。建设地点：项目拟选址位于富阳市大源镇浦东村，即现状镇区北侧，靠近过境公路。2.工程内容2.1拟建项目工程内容该项目工程内容包括污水处理厂、配套管网建设、回用水处理厂工程。该项目总投资27417万元。其中，使用银行长期贷款19191万元，企业资本金7680万元，流动资金短期贷款546万元。工程建设期约2年。富阳市大源镇污水处理和中水回用工程环境影响报告书简要本杭州市环境保护科学研究院-2-2.1.1污水处理工程设计的污水处理规模为日处理生活及工业污水10万吨，服务范围包括大源工业园区区块纳污面积为234.29公顷，汇水范围同时包括工业园区区块外的昌盛纸业有限公司、荣胜纸业有限公司、银丰造纸厂、新丰造纸厂、锦丰纸业有限公司、洪家庄纸业有限公司等造纸厂的造纸废水，以及青山岭村、班峰村、觃口村、新关村、金子坊村、溪东村等二十个村庄的生活污水及工业废水。该工程项目建议书确定射流曝气方案为该工程的推荐方案。污水处理工程设计出水水质：pH6～9、CODCr100mg/L、BOD520mg/L、SS30mg/L。2.1.2配套管网工程1、排水体制及设计规模根据富阳市大源镇总体规划，大源城镇污水处理厂服务范围内规划排水体制为雨污分流制，雨水管网的建设不包括在该工程中；污水管网的布置原则上把生活污水和工业污水（主要为造纸废水）合流排放，布置一套管网系统，进入大源污水处理厂处理。大源工业区块纳污面积为234.29公顷，污水总处理规模远期为10万t/d，汇水范围同时包括工业园区区块外昌盛纸业有限公司、荣胜纸业有限公司、银丰造纸厂、新丰造纸厂、锦丰纸业有限公司、洪家庄纸业有限公司等造纸厂的造纸废水，以及青山岭村、班峰村、觃口村、新关村、金子坊村、溪东村等二十个村庄的造纸废水和生活污水。2、管线布置该工程管线布置因地制宜分段布设，觃口村以上段、觃口村至蒋家段为沿大源溪敷设，城区段以农田埋设为主，沿溪敷设为辅，由南向北流，最终污水汇流至DNl800污水主干管，进入大源污水厂。造纸工业功能内生活污水和造纸废水分别沿工一路、工二路、工三路、市场路、惠民路及城中路敷设的部分干管，管径DN300~DNl000，最终污水汇流至DNl800污水主干管。2.1.3污水回用工程设计规模：以污水处理工程的70%计，7万m3/d。污水回用工程进、出水水质：CODCr60mg/L、BOD510mg/L、余氯0.1mg/L、色度30、粪大肠菌群1000个/L。富阳市大源镇污水处理和中水回用工程环境影响报告书简要本杭州市环境保护科学研究院-3-2.1.4总平面布置工程总占地面积12.18公顷，折合182.7亩，其中污水处理厂工程占地7.615公顷，回用水厂工程占地4.565公顷。设有生活区、污水处理区、污水回用区。整个厂区分为两部分，以道路分隔。一部分为回用水处理区，位于厂区的北侧。主要构筑物有配水井、高密度沉淀池、滤站、回流池等，另一部分为送水区，主要构筑物有清水池、送水泵站及二氧化氯间等；位于厂区的东侧，远离生活区。项目总平面布置见附图4。2.1.5排放口方案根据工程项目建议书，尾水排放采用就近原则，处理后尾水即排放大源溪，通过大源溪向富春江干流排放，富春江下游江段江道相对较为稳定，水深条件好，具有较强的稀释扩散能力，尾水排放口距离富春江干流2950m，排放口采用淹没式岸边排放。2.1.6人员参照《城镇污水处理厂附属建筑和附属设备设计标准》，结合本厂的实际情况，确定该项目劳动定员80人，其中污水回用工程15人，排水管网巡检人员5人，污水处理厂定员为60人，包括生产人员26人，辅助生产人员12人，行政及技术管理人员15人，后勤人员7人。2.1.7拟建项目地及拆迁情况拟建址范围内现全为待置换地，无农居建筑。根据项目卫生防护距离设置要求，该项目经环境影响分析，确定生化池卫生防护距离300m，污泥池为300m，防护距离内无居民要进行拆迁。2.2工程分析根据工程分析结果，该工程项目营运期污染源强见下表。富阳市大源镇污水处理和中水回用工程环境影响报告书简要本杭州市环境保护科学研究院-4-表2-1该项目营运期污染源强汇总污染类别年发生量（t/a）达标排放量（t/a）年削减量（t/a）废水废水量3200万960万2240万COD3200096031040BOD51120019211008SS256002882272NH3-N37.837.80TP3.83.80废气H2S0.460.460NH38.918.910固废污泥299002990噪声各类设备噪声、泵房等75～95dB－－3.选址周围环