燃煤電廠濕法煙氣脫硫系統(tǒng)節(jié)水及廢水處理技術(shù)研究.pdf

1、華北電力大學(xué)（保定）碩士學(xué)位論文燃煤電廠濕法煙氣脫硫系統(tǒng)節(jié)水及廢水處理技術(shù)研究姓名：李偉娜申請學(xué)位級別：碩士專業(yè)：環(huán)境工程指導(dǎo)教師：尹連慶201104華北電力大學(xué)碩士學(xué)位論文IIAbstractTakingwatersystemoflimestonegypsumWetFlueGasDesulfurization(WFGD)deviceasobjectofstudyFirstthispapercarriesontheanalysiscom

2、putationtotheusedwatertheconsumedwaterofWFGDsystemcarriesontheanalysistothewaterbalancetestofWFGDfurtherproposesthesavingwatermeasures.Theninviewofthewaterqualityacteristicofdesulfurizationwastewaterthepaperproposesthema

3、terializedbiologicaltreatmentmethodconductstheexperimentalstudy.Inthematerializedmethodingpolymerizationsulfuricacidferroaluminum(PAFS)asthecoagulantthesuspension’seliminationefficiencybyPAFSisabove99%.Thenusingthethogon

4、alexperimentsdeterminePAFSbesttextconditionunderremoveofthesulfidethefluidetheCODbyPAFS:thepHvalue8~9PAFSthrowingcontent7.5mllPAMthrowingcontent1mllcoagulationmixingtime20minsettlingtime20min.Underthebesttestconditionthe

5、treatmenteffect:aftercoagulationprocessingsulfidecontent0.845mgl1eliminationrate95.88%Fluidecontent8.74mgl1eliminationrate93.87%CODcontent115.19mgl1eliminationrate62.93%.Inthebiochemistrymethodthedesulfurizationwastewate

6、rthrowedthedomesticsewageinpowerplantisenabletobiochemicalability.Controllingtheproptionalofthrowedaddsinthe40%~45%Cldensityabout6000mgl.UsingthethogonalexperimentsdeterminethebestoperationalparamentersofSBRreacttreatmen

7、tedthedesulfurizationwastewaterafterchemicaltreatment:anaerobictime0.5htheaerationtimeis8hoxygendeficittime4hsedimentationtime1haerationquantity0.2m3hMLSS2000mgL.UnderoptimumconditiontheeliminationrateofCODNH4NNO3NfromSB

8、Rrespectivelyachieves91.60%89.23%63.90%theeffluentdensityofwastewaterrespectivelyis73.41mgL7.19mgL9.34mgL.theresultsachieverequestsofGB89781998“integratedwastewaterdisgestard“.Keywds:WFGDwaterbalancetestsavingwaterPAFSSB