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ID:1420232
大小:1.16 MB
页数:78页
时间:2017-11-11
《石化含油废水处理工艺设计毕业论文》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、题目:A/O工艺处理石化污水的设计院系:专业:班级:学生姓名:指导教师:论文提交日期:年月日论文答辩日期:年月日摘要本设计的题目是设计一座化工污水处理厂。该污水处理厂位于某石油化工厂内,其处理的污水量为3.6万吨/天,初始的BOD5的浓度为350mg/L,SS的浓度为450mg/L。本设计采用的工艺为A/O生物除磷系统,该工艺在污水处理方面属较为新颖的方法,技术较为成熟,较之普通的污水处理工艺有其不可比拟的优点,在经济和技术上都有明显的优势。出水指标能达到国家二级排放标准。该工艺的流程是:污水经粗格栅去除大体积的杂质,再经过调节池对初进的污水进行整流和均质,由细格栅进入隔油池
2、,主要是去除悬浮于污水中的油类物质。接着污水进入厌氧池,可吸收去除一部分有机物,并释放出大量磷,设计为矩形反应池。污水又进入好氧池,使废水中的有机物得到好氧降解,同时污泥将大量摄取废水中的磷。设计为推流式矩形反应池。再经由配水井流入二沉池排放,二沉池的污泥经回流泵房后剩余污泥通过污泥泵打入厌氧池,使得污水中的BOD5、SS达标排放。同时,在此污水处理过程中产生的污泥量较少,经简单的浓缩池浓缩、脱水后外运。本设计采用可靠的安全措施,合理布局,美化环境,把污水处理厂建成一个花园式的厂区。关键词:厌氧好氧A/O生物除磷系统Abstract:Thetitleofthisthesisi
3、stodesignasmallmunicipalsewagetreatmentplant.Thisplantliesinthesuburbofsomedistrict.Itcandispose36,000cubesewageeveryday.TheprimaryconcentrationofBOD5andSSis400mg/Land350mg/L.Theprocessofthisthesisisman-madewetlandtreatmentsystem,whichisanewpathwayinthesewagetreatment.Thetechniqueofthisproc
4、essisoffercomparativeadvantagesineconomicandtechnology.Thequalityofdisposedeffluentisuptothesecondclassofnationalstandard.Thefirststepofthisprocessisscreening,whichremovesbig-sizedtrash.Thenthecomminutingdevicecommutateandshredthesolidsinthesewageandthewasteflowintotheprimarysettingtankthro
5、ughthemeshgrid,Thesewagegothroughthethingrilltotheinitialsinkingpond,atthisstepthesolidsuspensionwhichmayprecipitateinthesewageareremoved.Accordingtorequestandthiscraftcharacteristicwhichdesignsneeded,takethespoketoflowthetypesedimentationpond.Afterwardsthesewageenterstiresoftheoxygenpond,m
6、ayabsorbremovespartoforganicmatters,andreleasesthemassivephosphorus.Theinteriordesignofthetiresoftheoxygenpondistherectangle.Whenthesewageenterstheoxygenpond,theorganicmatterinthewastewateraredegradedbythegoodoxygen,simultaneouslythesludgemassivelywillabsorbthephosphorusinthewastewater.Resp
7、ondedtheponddesignforpushspreadthetyperectangleresponsepond,thedesignspecificationisthesameastheinitiallysinkingthepond.Twosinkthedirtymireofthepondwaspassedbydirtymireinsurplusinempressinpumphouseinrefluxthedirtymirepumpbeatsintolacktokeepthepond,atwhic
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