Nekuda kwekuchinja kwezvimwe zvinhu, iyo yakabatidzwa sludge mhando inova yakareruka, yakawedzera, uye kugadzirisa kwekuita kunodzikira, kukosha kweSVI kunoramba kuchikwira, uye kupatsanurwa kwakajairika kwedhaka-mvura hakugone kuitwa mune yechipiri sedimentation tank.Iyo sludge level yesecondary sedimentation tank inoramba ichikwira, uye pakupedzisira iyo sludge inorasika, uye iyo MLSS concentration muaeration tank inoderedzwa zvakanyanya, nekudaro ichiparadza sludge mune yakajairika process operation.Chiitiko ichi chinonzi sludge bulking.Sludge bulking chinhu chinowanzoitika chisina kujairika mune activated sludge process system.
Activated sludge process yave kushandiswa zvakanyanya mukurapa mvura yetsvina.Iyi nzira yakawana mhedzisiro yakanaka mukurapa marudzi mazhinji emvura yetsvina yakaita sesuweji yekanzuru, kugadzira mapepa uye kudhaya mvura yetsvina, kugadzira mvura yetsvina uye makemikari tsvina.Zvisinei, pane dambudziko rinowanzoitika mukugadzirisa sludge yakagadziriswa, kureva, sludge iri nyore kuzvimba panguva yekushanda.Sludge bulking inonyanya kukamurwa kuva filamentous mabhakitiriya mhando sludge bulking uye asiri filamentous mabhakitiriya mhando sludge bulking, uye pane zvikonzero zvakawanda pakuumbwa kwayo.Kukuvadzwa kwesludge bulking kwakakomba zvikuru, kana yangoitika, zvakaoma kudzora, uye nguva yekudzorera yakareba.Kana matanho ekudzora asina kutorwa nenguva, kurasikirwa kwedhaka kunogona kuitika, kukuvadza zvakanyanya kushanda kweaeration tank, zvichikonzera kudonha kwehurongwa hwese hwekurapa.
Kuwedzera calcium chloride kunogona kutadzisa kukura kwefilamentous bacteria, iyo inobatsira pakuumbwa kwebhakitiriya micelles, uye kunatsiridza kugadzirisa kuita kwedhaka.Calcium chloride inoora uye inogadzira chloride ions mushure mekunyungudika mumvura.Chloride ions ine sterilization uye disinfection mhedzisiro mumvura, iyo inogona kuuraya chikamu chefilamentous bacteria uye inhibit sludge kuzvimba kunokonzerwa nefilamentous bacteria.Mushure mekumisa kuwedzera kweklorini, chloride ions inogonawo kugara mumvura kwenguva yakareba, uye mabhakitiriya ane filamentous haakure zvakanyanya munguva pfupi, uye ma microorganisms anogona kuramba achigadzira dense yenguva dzose floc, iyo inoratidzawo kuti kuwedzera calcium chloride inogona kutadzisa kukura kwefilamentous bacteria uye ine mhedzisiro yakanaka pakugadzirisa sludge kuzvimba.
Kuwedzera calcium chloride kunogona kudzora sludge kuzvimba nekukurumidza uye zvinobudirira, uye SVI yeakagadziriswa sludge inogona kuderedzwa nekukurumidza.SVI yakadzikira kubva pa309.5mL/g kusvika pa67.1mL/g mushure mekuwedzera calcium chloride.Pasina kuwedzera calcium chloride, iyo SVI yeakagadziriswa sludge inogona zvakare kuderedzwa nekushandura maitiro ekushanda, asi chiyero chekudzikisa chinononoka.Kuwedzera calcium chloride hakuna mhedzisiro iri pachena pakubvisa COD mwero, uye COD yekubvisa mwero wekuwedzera calcium chloride inodzikira ne2% chete pane yekusawedzera calcium chloride.
Nguva yekutumira: Jan-11-2024
