Kushandiswa kwecalcium chloride kudzora kuwanda kwetsvina
Nekuda kwekuchinja kwezvimwe zvinhu, hunhu hwetsvina inobatidzwa hunova hushoma, hwakakura, uye mashandiro ekugadzika anoderera, kukosha kweSVI kunoramba kuchikwira, uye kupatsanurwa kwemvura yematope hakugone kuitwa mutangi rechipiri retsvina. Huwandu hwetsvina mutangi rechipiri retsvina hunoramba huchikwira, uye pakupedzisira tsvina inorasika, uye huwandu hweMLSS mutangi remhepo hunodzikira zvakanyanya, nokudaro zvichiparadza tsvina mukushanda kwakajairika kwemaitiro. Chiitiko ichi chinonzi sludge bulking. Sludge bulking chiitiko chinowanzoitika chisina kujairika muhurongwa hwetsvina inobatidzwa.
Maitiro ekubvisa tsvina anoshandiswa iye zvino ari kushandiswa zvakanyanya mukurapa mvura yakasviba. Nzira iyi yakawana mhedzisiro yakanaka mukurapa marudzi akawanda emvura yakasviba isina kuchena senge tsvina yemumaguta, kugadzira mapepa nekudhaya mvura yakasviba, kuchengetedza mvura yakasviba uye mvura yakasviba yemakemikari. Zvisinei, pane dambudziko rinowanzoitika mukurapa tsvina inogadziriswa, kureva kuti, tsvina iri nyore kuzvimba panguva yekushanda. Kuunganidza tsvina kunonyanya kukamurwa kuita mhando yebhakitiriya ine filamentous sludge bulging uye non-filamentous bacteria type sludge bulging, uye pane zvikonzero zvakawanda zvekuumbwa kwayo. Kukuvara kwekuwedzera tsvina kwakakomba zvikuru, kana kwangoitika, kunonetsa kudzora, uye nguva yekudzoreredza irefu. Kana matanho ekudzora akasatorwa nenguva, kurasikirwa kwetsvina kunogona kuitika, zvichikanganisa kushanda kwetangi remhepo, zvichikonzera kuparara kwehurongwa hwese hwekurapa.
Kuwedzera calcium chloride kunogona kudzivirira kukura kwebhakitiriya rine filamentous, izvo zvinobatsira pakuumbwa kwebhakitiriya, uye kuvandudza mashandiro etsvina. Calcium chloride inoora yoburitsa chloride ions mushure mekunyungudutswa mumvura. Chloride ions dzine simba rekuuraya utachiona mumvura, izvo zvinogona kuuraya chikamu chebhakitiriya rine filamentous uye kudzivirira kuzvimba kwetsvina kunokonzerwa nebhakitiriya rine filamentous. Mushure mekumisa kuwedzerwa kwechlorine, chloride ions dzinogonawo kugara mumvura kwenguva yakareba, uye bacteria ine filamentous haikure zvakanyanya munguva pfupi, uye tupukanana tunogona kuumba dense regular floc, izvo zvinoratidzawo kuti kuwedzerwa kwecalcium chloride kunogona kudzivirira kukura kwebhakitiriya rine filamentous uye kune mhedzisiro yakanaka pakugadzirisa kuzvimba kwetsvina.
Kuwedzera calcium chloride kunogona kudzora kuzvimba kwetsvina nekukurumidza uye zvinobudirira, uye SVI yetsvina yakabatidzwa inogona kuderedzwa nekukurumidza. SVI yakaderera kubva pa309.5mL/g kusvika pa67.1mL/g mushure mekuwedzera calcium chloride. Pasina kuwedzera calcium chloride, SVI yetsvina yakabatidzwa inogona kuderedzwawo nekuchinja maitiro ekushanda, asi mwero wekudzikisa unononoka. Kuwedzera calcium chloride hakuna mhedzisiro yakajeka pahuwandu hwekubvisa COD, uye mwero wekubvisa COD wekuwedzera calcium chloride wakaderera ne2% chete pane wekusawedzera calcium chloride.