联合法处理高浓度氨氮废水的实验研究

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1、上海大学硕士学位论文联合法处理高浓度氨氮废水的实验研究姓名：刘小燕申请学位级别：硕士专业：环境工程指导教师：郑乐平20070901j：海人学硕士学位论文ABSTRACTAmmonia·-nitrogenfromtheindustrial—·agriculturalmanufactureandmunicipalwastewatersisoneoftheimportantfactorsresultinginthewaterpollutioninChina．Wastewatersfromdifferentorigionshavediffere

2、ntcharacteristics，thus，resultindifferentdisposals．Buthowtodealwimthehighconcentrationammonia-nitrogenwastewaterseconomically,practicallyandenvironmentallyisoneofthedevelopingwastewatertreatmenttechnologies．Thus，basedonthedomestic—overseasresearchesonthehighconcentrationa

3、mmonia-nitrogenwastewaters，thispaperputsforwardacombinedmethodofairstripping—magnesiumammoniumphosphate(MAP)-—SHARONandANAMMOXonthehighconcentrationammonia-nitrogenwastewaterswithlowC／Nratiofromthemanufacturingprocessesusingtheinorganicammonium硒lawmaterialbytheexperiment

4、alresearchesonthesyntheticwastewaterandthepracticalindustrialwastewater,aswellasdiscusestheeconomyandfeasibility．Airstrippingresearchesshowthatfirstly,theairstripping’Sefficiencyofammonia-nitrogenincreaseswiththeriseofair／waterratio，andtheammonia-nitrogenremovalefficienc

5、yincreaSesfasterwhentheair／waterratiochangesfrom1040to3120；secondly,theammonia-nitrogenremovalefficiencyincreaseswithpHvalues，buttheincreasinggapoftheammonia-nitrogenremovalefficiencydecreasesgraduallyifpHvalueover10；thirdly,theammonia—nitrogenremovalefficiencyincreasess

6、lightlywiththetemperatureofwastewater；finally，theammonia—nitrogenconcentrationofthewastewaterhavealittleeffectontheefficiency．Basedoneconomyandenergy,theoptimalconditionofairstrippingisthatpHvalueis10andair／waterratiois3120atroomtemperature，Attheoptimalcondition，thetheam

7、monia—nitrogenremovalefficiencyis55％．MAPprecipitation．researchesshowthat，firstly,thepHvaluehasanimportanteffectonMAPprecipitation，theoptimalscopeofthepHvaluearefrom9to10，andthecheapandpoorpuredMgOasmagnesiumsourcecandecreasecostthatadjustthepHvalueofthewastewater．Secondl

8、y,thetemperatureandammonia．nitrogen6海人学硕七学位论文concentrationofwastewaterhaveapoorinfluenceonMAPprecipitat