城市污水毒性測(cè)試方法研究.pdf

1、同濟(jì)大學(xué)碩士學(xué)位論文城市污水毒性測(cè)試方法研究姓名：邢海甬申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：環(huán)境工程指導(dǎo)教師：顧國(guó)維李詠梅20050116ABSTRACTManybioassaysaredevelopedtotestthechemicalstoxicityhoweveritisdifficulttoapplythesemethodstomunicipalwastewaterbecausetherearemanyreadilybiodegradabl

2、esubstratesinmunicipalwastewaterandthosesubstrateswontinhibitthegrowthoforganismonthecontrarytheywillacceleratethegrowthoforganism.Microtoxwasanefectivemethodtotestthecomplextoxicityofmunicipalwastewaterbutitsrecurrencew

3、aspooranditstestspeciesluminescentbacteriawasexpensiveanddifficulttocultivate.Inthispaperweusedtheactivatedsludgethatwascheapandeasilyachievedasthetestspeciestoevaluatethecomplextoxicityofmunicipalwastewaterandexploredth

4、ebesttestconditionsofthemaximumrespirationratemethodtheendogenesisrespirationratemethodandthenitrificationratemethod.Thefeasibilitysensitivityandrecurrenceofthesethreemethodswerecomparedandtherelationshipbetweenthephysic

5、alchemicalindexandthetoxicityindexwereconcludedthroughtestingtheseindexesoftheinfluentsandeffluentsoffivewastewatertreatmentplants.Itcouldpurifythebacteriaintheactivatedsludgeandimproveitssensitivitytothetoxicitythroughd

6、omesticatingthesludgewiththesolutioncomposedbyNaACNH4ClKHZPO4andothernutrientelementssuchasCaMgFeandCu(COD:N:P:Ca:Mg:Fe:Cu=100:5:1:0.17:0.17:0.067:0.003)Themaximumrespirationratemethodwasntfeasibletotestthetoxicityofsewa

7、geandmunicipalwastewaterbecauseoftheinfluenceofthereadilybiodegradablesubstratesbutitwasaneffectivemethodtotestthetoxicityofchemicalsandindustrialwastewaterTheendogenesisrespirationratemethodcouldbeusedtotestthetoxicityo

8、fmunicipalwastewaterindustrialwastewaterandchemicalsbutitwasntthebestmethodtotestthetoxicityofindustrialwastewaterwhoseCODwaslargeanddegradabilitywaspoorAlthoughtheautotrophicbacteriawasntsensitivetothetoxicityofinorgani