UASB反应器处理天然气净化废水启动试验研究

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1、西南交通大学硕士学位论文UASB反应器处理天然气净化废水启动试验研究姓名：张雷申请学位级别：硕士专业：环境工程指导教师：欧阳峰20070501西南交通大学硕士研究生学位论文第1I页AbstractThewastewaterfromnaturalgaspurificationiscomprisedofnormalpurifyingwastewater,andexaminingandrepairingwastewater．Theconcentrationoforganicsinnormalpurify

2、ingwastewaterislowandthiswastewateriseasytodispose；whiletheconcentrationoforganicsinexaminingandrepairingwastewaterishigh,whichishardtodealwith．Anaerobictechnologiesarebroadlyusedindealingwithhighorganicconcentrationwastewater．Assuccessfuloneofanaerob

3、ictechnologies，up-flowanaerobicsludgeblanket(UASB)isusednotjustineasilydegradedhighorganicconcentrationwastewatvrbutalsoinhardlydegradedhighorganicconcentrationwastewater．Thestar-upofUASBreactorsdealingwithexaminingandrepairingwastewaterisstudiedinthe

4、papeLThereactorsarerunontheconditionofmesophilicanaerobicdigestion．Twopilot-scaleUASBreactorsareseededwithsludgefromacidificationpondandotherUASBreactors．Theinfluentismixedwithexaminingandrepairingwastewaterandfreshwater,andismixedwiththedemandofexper

5、imentation．TheexaminingandrepairingwastewaterisfromYinjinDepartment．Astheexaminingandrepairingwastewaterisabundantinnitrogenandalkalinity,thereisnoadditionofthem．While，thereisalackofphosphorusintheexaminingandrepairingwastewater．Tomeetthedemandofbacte

6、riaandacceleratethespeedofstartup，phosphatefertilizerandmicroelementsal'eadded．Thetemperatureoftwopilot—scalereactorsisin．casedfromrOOmtemperatureto36"C，and2℃isincreasedeverydaytopreventthebadreactionofquicktemperatureadvance．TheconcentrationofCODinin

7、fluentisincreasedfrom1000me／LtO6000m以Whenbadreactionappears，theconcentrationofCODininfluentisreducedtOthe西南交通大学硕士研究生学位论文第lII页instance．ThepHofeffluentissteadywhichindicatesthedigestionsystemgetsagoodCounteractonacidandalkali．Toavoidtheaccumulationof嘲an

8、dacidificationofreactorsystem，theConcentrationofVFAineffluentisanalyzed．Thestar-upofpflot．scaleUASBreactorsContinues133dandthengetintosteadystate．TheCODremovalisabout40％．Keywords：thewastewaterfromnataralgaspurification；up-flowanaerobicsludgebl