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当前位置:首页 > 商业/管理/HR > 质量控制/管理 > 2万吨天制革废水处理工艺设计
摘要本设计的主要内容为制革废水处理工艺设计。制革废水的水质比较复杂,含有大量蛋白质、染料、油脂、硫化物、铬盐以及毛渣等生化耗氧量高的有机和无机的可溶物及悬浮物,以及有潜在毒性的金属盐类。针对制革废水的这些特点,本设计采用双沟式氧化沟对制革废水进行处理。双沟式氧化沟不仅运行负荷非常低,处理效果好,且停留时间长、稀释能力强、抗冲击负荷能力强。在大型污水处理厂得到了广泛的应用。另外,处理过的废水再经过超滤膜组件深度处理后可达到回用标准,可以进行回用,使资源达到循环利用的目的。关键词:制革废水,双沟式氧化沟,循环利用AbstractThemaincontentofthedesignisleatherwastewatertreatmentprocessdesign.Thecharacteristicsofleatherwastewaterismuchmorecomplex,containinglargequantitiesofprotein,dye,grease,sulphide,chromiumsaltandtrichome,etc.Andanyanotherhighbiochemicaloxygendemandofthesolubleorganicandinorganicmatterandsuspendedsolids,aswellaspotentiallytoxicmetalsalts.Forthisdesign,thedoubleoxidizationditchisthecoreofthisprocess.Thedoubleoxidizationditchisnotonlyaverylowloadoperation,goodeffect,andthelongresidencetime,dilutioncapacity,strongresistancetoimpactload.Inthelargesewagetreatmentplanthasbeenwidelyused.Inaddition,thetreatedwastewaterthroughtheultrafiltrationmembrane,andafteradeepreachthestandardofrecycling,andthewaterwillbeusedagain,andmaketheresourcescyclicutilization.Keywords:Leatherwastewater,Thedoubleoxidizationditch,Cyclicutilization目录第一章绪论........................................................11.1前言........................................................11.2制革废水的产生、特点、水量及水质............................11.2.1制革废水的产生.........................................11.2.2制革废水的特点.........................................21.2.3制革废水的水量.........................................31.2.4制革废水的水质.........................................41.3排放标准....................................................41.4设计任务及依据.............................................51.4.1设计任务..............................................51.4.2设计依据..............................................51.5设计原则....................................................6第二章工艺流程确定................................................82.1概述........................................................82.2制革废水处理方法比较........................................82.2.1物化法...............................................82.2.2生化法...............................................92.3设计方案的确定.............................................112.3.1工艺介绍...........................................13第三章污水处理主要设备及构筑物...................................143.1格栅.......................................................143.1.1确定设计参数.......................................143.1.2设计计算...........................................143.2污水提升泵房...............................................163.2.1设计说明.............................................163.2.2设计参数...........................................163.2.3泵房设计计算.........................................163.3调节池.....................................................173.3.1确定设计参数.......................................173.3.2设计计算...........................................173.4竖流式初沉池...............................................173.5氧化沟(采用双沟式氧化沟).................................203.5.1确定设计参数......................................203.5.2设计计算..........................................203.6二次沉淀池(幅流式沉淀池)................................233.6.1确定设计参数.........................................233.6.2设计计算.............................................233.7气浮池....................................................253.7.1确定设计参数.........................................253.7.2设计计算.............................................263.8超滤膜组件................................................273.8.1设计说明..............................................273.8.2设计参数.............................................283.9集泥井....................................................283.10浓缩池...................................................293.11脱水车间..................................................303.12污泥处理与处置...........................................323.13含铬废水的处理...........................................323.13.1贮存池..............................................323.13.2反应沉淀池..........................................32第四章平面及高程布置.............................................334.1平面布置......................................................334.2高程布置...................................................35第五章主要构筑物与设备...........................................39第六章投资估算...................................................436.1估算范围...................................................436.2估算.......................................................436.2.1工程投资估算.........................................436.2.2管理运行费用估算...................................44结论..........................................................46参考文献.......................................................47致谢.............................................错误!未定义书签。1第一章绪论1.1前言随着改革开放的发展,制革行业已形成了相对独立的行业队伍,企业经济类型结构也发生了较大变化。国有企业在逐步退出制革行业,民营、三资企业将成为制革行业发展的主力军。虽然目前80%以上的制革企业已经建有污水处理设施,但由于处理模式和投入不同,承接设计和施工单位也存在不规范之处,凸现的问题很多,制革废水处理的达标率很低。因此当务之急,必须尽快制定制革废水设计规范和行业排放标准,推行制革企业区域集中,污染物集中治理和集中管理、加快技术进步和治理力度,才能实现制革废水全面稳定达标排放的目标。制革工业是一个污染严重的产业,主要是因为制革废水中含有大量蛋白质、染料、油脂、硫化物、铬盐以及毛渣等生化耗氧量高的有机和无机的可溶物及悬浮物,以及有潜在毒性的金属盐类。此外,在制革过程中,硫化氢、氨水和其它一些易挥发的有机化合物,以及蛋白质固体废料分解都会产生有毒气体或不良气味。虽然环境恶化与高浓度氨氮和铬对人
本文标题:2万吨天制革废水处理工艺设计
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