曝气沉砂池的设计计算

15Vol.23No.101997[],[],,,,:,,,;,(),,,,,,,1,,,,,(2a),,(2a)(2b),,,,,,,(2b),11011012mm100%,012mm85%,011mm50%1216Vol123No.1019973(=2165g/cm3)(%)210090850112531606112719201160517691361118801200101817128211240125019180291523610001315311684412852192d(mm)qA(m3/m2h))4,,012mm2165g/cm3,()3(,qA,(1))qA=Q/A(1)A(m2);Q(m3/h);qA(m3/(m2h))2,13min(5min),10min,20min,5min4,;,,011012;,330,,,,,((2)),013095012085011575011050010710d(mm)(%)(%)17Vol.23No.1019975Qa=314F015(2)F(m2);Qa(m3/(hm))(),,,,01250130m/s,,01060112m/s,,,,,(5),,:11115m2,018019;2110,60m;31,,,30%(),1/3;4130cm,70,45,3040;5130cm,1/3;61,,,;71(),,,;81,2:1,23m;91:31400123:[phone]:199725221TE(m)301150145m3/(minm)513L/(sm):(0163+0152lnTE)-0162m3/(hm3)*:(0107+0176lnTE)-1133m3/(hm3)*015110m3/(hm3)**:2WATER&WASTEWATERENGINEERINGCONTENTSVol.23No.10October1997MonthlySince1964ASSESSMENTOFSLUDGESTABILIZATIONINWASTEWATERTREATMENTPLANTZhuMingquanetal(5)Abstract:Forplanning,optimizationandcomparisonofvariousbiologicalsludgestabilizationprocessesitisnecessarytohaveaseriesofparametersbywhichtheperformanceofsludgestabilizationcanbecharacterized.Inthispaperthedefinitionandthemainprocessesofbiologicalsludgestabilizationwerediscussedandintroduced.Basedonthesystematicalanalysesofprocessparametersofsludgestabilizationanassessmentsystemforcharacterizingthestabilizationdegreeofdifferentprocessesisrecommended.ONTHEWATERINTAKEOFINFILTRATIONGALLERYWangYunqietal(11)Abstract:Thispaperpresentsaperfectconceptaboutwaterintakeintheinfiltrationgallerydesign.Basedonit,severalgeneralproblemsconcerninghowtoraisetheyield,howtokeeptheinfiltrationgalleryoperationforalongtimeandhowtokeeptheyieldsroughlystableareexpoundedindetail.Thensomedesignprinciplesareofferedasrefer2encefordesign.CALCULATIONINDESIGNOFAERATEDGRITCHAMBERTangJianguoetal(15)Abstract:Thefeaturesandthemeaningsandnumeralrangesofthedesignparame2tersofaeratedgritchambersaredescribedtoreferfordesign.ONTHEENHANCEDBIOLOGICALPHOSPHORUSREMOVALINACTIVATEDSLUDGEPROCESSLinYanhuaetal(18)Abstract:Inordertoimprovethereliabilityandefficiencyofphosphorusremovalintheenhancedbiologicalphosphorusremoval(EBPR)inactivatedsludgeprocess,theef2fectofcarbohydrate(CH)contentinsludgehasbeenevaluated.ItwasrevealedthattheanaerobicdegradationandaerobicsynthesisofCHwerethedominantmetabolicactiv2itiesofactivatedsludgeinEBPRprocess.SeveralstudiesexhibitedthatactivatedsludgesaccumulatedexceedPonlywhentheCHwaslowandthenthePcontentinactivatedsludgedecreasedasthesludgeCHcontentincreased.FactorsinfluencingtheaccumulationofCHwereanalysed.Thisanalysisappearedtobeanadvisableopera2tionalguidetoimprovethereliabilityandefficiencyofEBPRprocess.ASTUDYONCOUNTRYSIDEWATERSUPPLY2WITHCOMBINEDPROCESSOFROUGHINGFILTRATIONANDSLOW2SANDFILTRATIONLuXiwuetal(21)Abstract:Theresultsofroughingandslowsandfiltrationsexperimentsshowedthat