曝氣生物濾池處理微污染水優(yōu)化研究.pdf

1、山東建筑大學(xué)碩士學(xué)位論文曝氣生物濾池處理微污染水優(yōu)化研究姓名：郝兆亮申請學(xué)位級別：碩士專業(yè)：市政工程指導(dǎo)教師：劉建廣20100401山東建筑大學(xué)碩士學(xué)位論文TheOptimalTreatmentForMicropollutedWaterWithBAFHaoZhaoliang(CollegeofEnvironmentalandMunicipicalEngineering)DirectedbyLiu]ianguangABSTRACTThis

2、subjectwassupportedbythebiologicalpretreatmenttechnologyresearchanddemonstrationleadingunderthemajorscienceandtechnologyprojectsofnationalwaterpollutioncontrolandmanagement(2008ZX07422—003)TheBAFwasusedinpre—treatmentofm

3、icropollutedwaterandoptimizedthistreatmentInthispaperBAFwasstudiedonthemi凹opollutedwaterofhighconcentrationofpollutantswi廿lpolitscaleandhomemadeexpandedclayandlavaasfiltrationmediaTheresultsshowthat：(1)acontrastivestudyw

4、asmadeonthestart—up，biofilmformationindifferenttemperature，andtwoBAFsinlowtmperatureThisstudyshowsthatthetimeneededforthestartupandbiofilmformationofBAFindifferenttemperatureweredifferent，thereneed20daysinnormaltempertur

5、e，and30dayswasneededinlowtemperture(5～10“C)withllighconcentrationofpollutantsandlowfiltrationrate(2)Thefactorsincludedhydraulicloading，airtoliquidratio，pH，influentorganicconcentrationandtempertureThestudyshowsthatwhenthe

6、filtrationrateis4～6m／h，hydraulicloadingisO38—1OOm’／m2h，airtoliquidratiois1：1，pHis6580，theinfluentCODMnis100mg／L，andtheinfluentNH4Nis65m∥L，theaveragetreatmentrateofNH4一Nis85％，theaveragetreatmentrateofCODMnis50％Whenthetemp

7、eratureisOVer15℃，theaveragetreatmentrateofCODMnandNH4Nis50％and80％，respectivelyButwhenthetemperturedownto5～10。C，bothofthetreatmentofCODMnandNH4NwerecutdownTherewere28％and70％，respectively(3)theheadlossoftheBAFwasstudiedbyu

8、singthetubeThestudyshowsthatwiththereactorrunningtimeincreases，andtheheadlosswillgraduallyincreasetheratein0～80cmwasfasterthanthelaterpartoftheBAF(4)thebackwashingWasstudiedindifferentwashrateneresultsshowthatwhenthewate