低碳源城市污水化学辅助除磷试验.研究

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1、山东建筑大学硕士学位论文phosphorusremovalproject．11leexperimentresultsindicatethat：Atthesamedosageoffourchemicals(FeCl3。6H20，AICl3‘6H20，PAFC，PAC)intheendofaerationtank，theremovalrateofTPiS78．0％，71．3％，58．7％and52．7％respectivelyandtheremovalrateofP04j。is79．6％，73．3％，62．

2、5％and57．5％respectively．ThereislittledifferencebetweentheremovalofNH3-N，TN，CODcrandSS．FeCl3-6H20andAICl3·6H20arebeUerchoicesontheremovalofTPandP04，．Asferricsaltischeaperandhasnopotentialharmtohumanbeings，itwasselectedtobetheoptimumchemicalforthechemical—a

3、idphosphorusremovalprocess；Attheadditionof22mg／LFeCl3’6H20(intheendofaerationtank)，theremovalrateofCODer,TP,P04弘，NH3-N，TNandSSiS72．6％，81．2％，77．7％，62．9％，32．1％and95．2％respectively．Comparedwiththebiologicalnitrogenandphosphorusremovalprocess，theremovaleffic

4、iencyofTP,P04弘，SSincreasessignificantly,butthereisnodistinctdifferenceintheremovalefficiencyofCODcr,NH3-N，TN，whichshowsthatproperchemicaldosageposeslesseffectonmicrobialactivity．硼1eeffluentTPcanmeetthedischargestandardformunicipalwastewatertreatmentplant

5、(GBl8918-2002)；Atthesameadditionof22mg／LFeCl3。6H20，theremovalrateofCODcr,TP,P04j‘，NH3-N，TNandSSis73．6％，79．7％，84．0％，96．9％，30．8％and96．6％respectivelyintheendofaerationtankandtheremovalrateofCODcr,TP,P04扣，NH3-N，TNandSSiS69．7％，73．2％，75．7％，97．O％，30．4％and93．3％r

6、espectivelyintheendofanaerobictank．Therefore，theCODcr,TP,P04争，SSremovalemcientiSbetterintheendofaerationtankthanintheendofanaerobictank；Atlowtemperature(2℃·9℃)，toachievetheTPstandardofeffluent，24mg／LFeCl3‘6H20(fordistributionrateofl：1．2)isneededtoaddinth

7、eendofaerationtank，谢ththeremovalrateofCODcr,TP,P04弘，NIX3．]N，TNandSSis60．8％，79．2％，74．1％，23．9％，22．2％and95．1％respectively．Compared晰mtheperformanceatnormaltemperature，theremovalefficiencyofCODcr,NH3-NandTNdecreasessignificantly,whichWasduetolessmicrobialnumb

8、erandweakermicrobialactivityatlOWtemperature．Atthesameadditionof22mg／LFeCl3。6H20，thephosphorusremovalrateofⅣ山东建筑大学硕士学位论文accessorialprogressandfrontprogressis80．7％and68．3％respectively，83％and52．8％foraccessorialprogressandpos