Ngenxa yoshintsho kwezinye izici, ikhwalithi ye-sludge ecushiwe iba lula, ikhuliswe, futhi ukusebenza kokuzinza kuyawohloka, inani le-SVI liyaqhubeka nokukhuphuka, futhi ukuhlukaniswa okujwayelekile kwamanzi odaka akukwazi ukwenziwa ethangini lesibili le-sedimentation.Izinga le-sludge lethangi lesibili le-sedimentation liyaqhubeka nokukhuphuka, futhi ekugcineni udaka luyalahleka, futhi ukugxila kwe-MLSS ethangini lokungenisa umoya kuncipha kakhulu, ngaleyo ndlela kucekele phansi udaka ekusebenzeni kwenqubo evamile.Lesi simo sibizwa ngokuthi ukunqwabelana kwe-sludge.Ukunqwabelana kodaka kuyinto evamile engavamile ohlelweni lwenqubo yodaka olucushiwe.
Inqubo yodaka ecushiwe manje isisetshenziswa kabanzi ekuhlanzeni amanzi angcolile.Le ndlela ibe nemiphumela emihle ekwelapheni izinhlobo eziningi zamanzi angcolile emvelo afana nendle kamasipala, ukwenza amaphepha kanye nokudaywa kwamanzi angcolile, ukuphekela amanzi angcolile kanye namanzi angcolile amakhemikhali.Kodwa-ke, kunenkinga evamile ekwelashweni kwe-sludge okucushiwe, okungukuthi, udaka kulula ukuvuvukala ngesikhathi sokusebenza.I-sludge bulking ihlukaniswe ikakhulukazi ngamabhaktheriya ane-filamentous uhlobo lwe-sludge bulking kanye namabhaktheriya angenayo i-filamentous uhlobo lwe-sludge bulking, futhi kunezizathu eziningi zokwakheka kwawo.Ukulimala kokugcwala kodaka kubi kakhulu, uma kwenzeka, kuba nzima ukulawula, futhi isikhathi sokubuyisela side.Uma izinyathelo zokulawula zingathathwa ngesikhathi, ukulahlekelwa kwe-sludge kungase kwenzeke, kulimaze ngokuyisisekelo ukusebenza kwe-tank aeration, okuholela ekuweni kwalo lonke uhlelo lokwelapha.
Ukwengeza i-calcium chloride kungavimbela ukukhula kwamabhaktheriya ane-filamentous, asiza ukwakheka kwama-micelles ebhaktheriya, futhi kuthuthukise ukusebenza kahle kodaka.I-calcium chloride izobola futhi ikhiqize ama-ion e-chloride ngemva kokuncibilika emanzini.Ama-ion e-chloride anomphumela wokuvala inzalo kanye nokubulala amagciwane emanzini, angabulala ingxenye yamabhaktheriya ane-filamentous futhi avimbele ukuvuvukala kodaka okubangelwa amagciwane ane-filamentous.Ngemuva kokumisa ukufakwa kwe-chlorine, ama-ion e-chloride nawo angahlala emanzini isikhathi eside, futhi amabhaktheriya ane-filamentous awakhuli ngokweqile esikhathini esifushane, futhi ama-microorganisms asengakwazi ukwakha i-floc evamile, ekhombisa ukuthi ukungezwa kwe-floc evamile. i-calcium chloride ingavimbela ukukhula kwamagciwane ane-filamentous futhi inomphumela omuhle ekuxazululeni ukuvuvukala kodaka.
Ukwengeza i-calcium chloride kungalawula ukuvuvukala kodaka ngokushesha nangempumelelo, futhi i-SVI yodaka olucushiwe ingancishiswa ngokushesha.I-SVI yehle isuka ku-309.5mL/g yaya ku-67.1mL/g ngemva kokwengeza i-calcium chloride.Ngaphandle kokwengeza i-calcium chloride, i-SVI yodaka olucushiwe ingancishiswa ngokushintsha imodi yokusebenza, kodwa izinga lokunciphisa lihamba kancane.Ukwengeza i-calcium chloride akunawo umthelela osobala esilinganisweni sokususwa kwe-COD, futhi izinga lokususwa kwe-COD lokwengeza i-calcium chloride liphansi ngo-2% kuphela kunalelo lokungangezi i-calcium chloride.
Isikhathi sokuthumela: Jan-11-2024
