灰色系统在焦化废水水质预测中的应用

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1、西南交通大学硕士学位论文灰色系统在焦化废水水质预测中的应用姓名：李阳申请学位级别：硕士专业：环境工程指导教师：欧阳峰20080501西南交通大学硕士研究生学位论文第1I页AbstractThecoke—plantwastewaterisrecognized蠲ahard-biodegradableindustrialwastewater'sincceitcontainsalargenumberofpolycyclicaromatichydrocarbonsandheterocyclicorganiccategory．Anditisquitedifficultforthese

2、organicstobedegradedbymicro—organismsinaerobicconditions．Thecoke-plantwastewaterthusbecameoneofthemostdifficultproblemsinthefiledofChina’SWaterPollutionContr01．AhugequantityofCoke—planwastwaterisdisposedintothereceivingwaterwithoutsafedisposals，thatbringstremendouspollutiontothereceivingw

3、ater．Inordertopreventthedisposalofexceedquotacoke—planwastewaterdischargedbytreatmentplantsandnottobadimpactonqualityofthewaterenvironment，theachievementofon—linecontrolandreal-timeadjustmentsbecomesnecessaryforcoke—plantwastewatertreatmentplant．Andthekeypointtoachivethisgoalistheestablis

4、hmentofthemathematicalmodelofeffluentquality．Greysystemtheoryfocusesonthe’’smallsample¨，”poorinformation”uncertaintyproblemswhicharehardlyresolvedbyprobability／statisticsandfuzzymath．Itexplorestherealrulesofthings’movementsbysequenceoperator．It’Scharacterizedby竹Modelingwithlessdata”，andsu

5、itableforwaterqualityforecasts．’TakingPanzhihuaIronandSteelGroupcoke-plantwastewatertreatmentstation弱anexample，makinguseofMATLABasanumericalcomputingplatforms，thispaper,byapplyingthegreysystemtheory,constructsaGM(1，1)forecastmodelofthequalityofeffluentdisposedbythesewagetreatmentplant：Aft

6、ertestingthemodel，themodelpredictesallaveragerelativeerrorof1．85percent，whichsatisfiestherequirementsofthewaterqualityforecast．Theestablishmentofthismodelisconducivetotheachievementofcomputercontrolandcostsavingsofmonitoringforsewagetreatmentstations．Itprovidesameanstosupportdecision—maki

7、ngforreal-timecontrolinsewage西南交通大学硕士研究生学位论文第1II页treatmentplants．AndalsoitprovidesafeasiblewayforothersimilarintelligentControlinsewagetreatmentplants．Itoffersexperiencesforrelevantresearchs．Keywords．WaterqualityforecastGreysystemPanzhihuaIronandSteelGroup西南交通大学学位论文