石化含油废水处理工艺设计.doc

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，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:Thetitleofthisthesisistodesignasmallmunicipalsewagetreatmentplant.Thisplantliesinthesuburbofsomedistrict.Itcandispose36,000cubesewageeveryday.TheprimaryconcentrationofBOD5andSSis400mg/Land350mg/L.Theprocessofthisthesisisman-madewetlandtreatmentsystem,whichisanewpathwayinthesewagetreatment.Thetechniqueofthisprocessisoffercomparativeadvantagesineconomicandtechnology.Thequalityofdisposedeffluentisuptothesecondclassofnationalstandard.Thefirststepofthisprocessisscreening,whichremovesbig-sizedtrash.Thenthecomminutingdevicecommutateandshredthesolidsinthesewageandthewasteflowintotheprimarysettingtankthroughthemeshgrid，Thesewagegothroughthethingrilltotheinitialsinkingpond,atthisstepthesolidsuspensionwhichmayprecipitateinthesewageareremoved.Accordingtorequestandthiscraftcharacteristicwhichdesignsneeded,takethespoketoflowthetypesedimentationpond.Afterwardsthesewageenterstiresoftheoxygenpond,mayabsorbremovespartoforganicmatters,andreleasesthemassivephosphorus.Theinteriordesignofthetiresoftheoxygenpondistherectangle.Whenthesewageenterstheoxygenpond,theorganicmatterinthewastewateraredegradedbythegoodoxygen,simultaneouslythesludgemassivelywillabsorbthephosphorusinthewastewater.Respondedtheponddesignforpushspreadthetyperectangleresponsepond,thedesignspecificationisthesameastheinitiallysinkingthepond.Twosinkthedirtymireofthepondwaspassedbydirtymireinsurplusinempressinpumphouseinrefluxthedirtymirepumpbeatsintolacktokeepthepond,atwhic