Ngenxa yokutshintsha kwezinto ezithile, umgangatho we-sludge osebenzayo uba lula, wanda, kwaye ukusebenza kokumisa kuyancipha, ixabiso le-SVI liyaqhubeka nokunyuka, kwaye ukuhlukana okuqhelekileyo kwamanzi odaka akukwazi ukuqhutyelwa kwitanki yesibini ye-sedimentation.Inqanaba le-sludge yetanki ye-sedimentation yesibini iyaqhubeka nokunyuka, kwaye ekugqibeleni i-sludge ilahlekile, kwaye i-MLSS yoxinaniso kwi-tank ye-aeration iyancitshiswa kakhulu, ngaloo ndlela itshabalalisa i-sludge ekusebenzeni kwenkqubo eqhelekileyo.Lo mkhwa ubizwa ngokuba yi-sludge bulking.I-sludge bulking yinto eqhelekileyo engaqhelekanga kwinkqubo yenkqubo ye-sludge esebenzayo.
Inkqubo yodaka esebenzayo ngoku isetyenziswa ngokubanzi kunyango lwamanzi amdaka.Le ndlela ifumene iziphumo ezihle ekuphatheni iintlobo ezininzi zamanzi amdaka endalo afana nelindle likamasipala, ukwenziwa kwamaphepha kunye nokudaya amanzi amdaka, ukutyisa amanzi amdaka kunye namanzi amdaka amachiza.Nangona kunjalo, kukho ingxaki eqhelekileyo kunyango lwe-sludge olusebenzayo, oko kukuthi, i-sludge ilula ukudumba ngexesha lokusebenza.Udaka bulking ubukhulu becala yahlulwe kwiibhaktheriya filamentous uhlobo sludge bulking kunye non-filamentous ibhaktheriya uhlobo udaka bulking, kwaye kukho izizathu ezininzi zokusekwa kwayo.Ukulimala kwe-sludge bulking kubi kakhulu, xa kwenzeka, kunzima ukulawula, kwaye ixesha lokubuyisela lide.Ukuba amanyathelo okulawula angathathwanga ngexesha, ukulahleka kwe-sludge kungenzeka, eyonakalise ngokusisiseko ukusebenza kwetanki ye-aeration, okubangelwa ukuwa kwenkqubo yonke yonyango.
Ukongeza i-calcium chloride inokuthintela ukukhula kweebhaktheriya ze-filamentous, ezincedisa ukubunjwa kwe-bacterial micelles, kunye nokuphucula ukusebenza kwe-sludge.I-calcium chloride iya kubola kwaye ivelise i-ion chloride emva kokuchithwa emanzini.I-Chloride ion inesiphumo sokubulala iintsholongwane kunye nesiphumo sokubulala iintsholongwane emanzini, esinokubulala inxalenye yebhaktheriya ene-filamentous kwaye inqande ukudumba kodaka okubangelwa ziibhaktheriya ezinefilamentous.Emva kokuyeka ukongezwa kweklorini, i-ion ye-chloride nayo inokuhlala emanzini ixesha elide, kwaye iibhaktheriya ezine-filamentous azikhuli kakhulu kwixesha elifutshane, kwaye ii-microorganisms zisenokwenza i-floc eqhelekileyo, ebonisa ukuba ukongezwa Ikhalsiyam chloride inokuthintela ukukhula kweebhaktheriya ezinefilamentous kwaye inefuthe elihle ekusombululeni ukudumba kodaka.
Ukongeza i-calcium chloride inokulawula ukudumba kwe-sludge ngokukhawuleza nangempumelelo, kwaye i-SVI ye-sludge esebenzayo ingancitshiswa ngokukhawuleza.I-SVI yehla ukusuka kwi-309.5mL / g ukuya kwi-67.1mL / g emva kokongeza i-calcium chloride.Ngaphandle kokongeza i-calcium chloride, i-SVI ye-sludge esebenzayo ingancitshiswa ngokuguqula indlela yokusebenza, kodwa izinga lokunciphisa lihamba kancinci.Ukongeza i-calcium chloride ayinayo impembelelo ecacileyo kwireyithi yokususa i-COD, kwaye isantya sokususa i-COD sokongeza i-calcium chloride si-2% kuphela esisezantsi kunokuba singafaki i-calcium chloride.
Ixesha lokuposa: Jan-11-2024
