COD, ammonia nitrogen, phosphorus yakazara uye nitrogen yese zvinotaridza kusvibiswa kukuru mumitumbi yemvura. Kukanganisa kwavo pamhando yemvura kunogona kuongororwa kubva pane zvakawanda.
Chekutanga pane zvese, COD chiratidzo chemukati meiyo organic matter mumvura, iyo inogona kuratidza kusvibiswa kweiyo organic zvinhu mumvura yemvura. Mitumbi yemvura ine huwandu hwakanyanya hweCOD inowanzova nehuturu hwepamusoro uye ruvara, uye inotadzika kubereka mabhakitiriya, zvichiita kuti hupenyu hwemvura hupfupike. Pamusoro pezvo, huwandu hwakanyanya hweCOD huchapedzawo okisijeni yakanyungudika mumvura, zvichitungamira ku hypoxia kana kunyange kudzipwa mumvura yemvura, zvichikonzera kukuvadza kuhupenyu hwemumvura.
Chechipiri, ammonia nitrogen ndiyo imwe yezvakakoshesesa zvinovaka muviri mumvura, asi kana iyo ammonia nitrogen yakawandisa, inotungamira kune eutrophication yemuviri wemvura uye kukurudzira kuumbwa kwealgae maruva. Algae blooms haingoiti kuti mvura iite mhirizhonga, asiwo inopedza huwandu hwakawanda hweokisijeni yakanyungudika, zvichiita kuti hypoxia mumvura. Muzviitiko zvakakomba, zvinogona kukonzera kufa kwehove zhinji. Pamusoro pezvo, kuwanda kweammonia nitrogen kuchaburitsa kunhuhwirira kusingafadzi, izvo zvichave nemhedzisiro yakaipa pane zvakatenderedza uye hupenyu hwevagari.
Chechitatu, phosphorus yakazara chinhu chakakosha chirimwa chekudya, asi yakawandisa yakazara yakazara phosphorus inosimudzira kukura kwealgae nezvimwe zvirimwa zvemumvura, zvichitungamira kune eutrophication yemitumbi yemvura uye kuitika kwealgal blooms. Algal blooms haingoite kuti mvura iite turbid uye kunhuwa, asi zvakare inoshandisa huwandu hukuru hweokisijeni yakanyungudika uye inokanganisa kugona kuzvichenura kwemvura. Pamusoro pezvo, mamwe algae akadai secyanobacteria anogona kuburitsa zvinhu zvine muchetura, zvichikonzera kukuvadza kune yakatenderedza nharaunda uye ecosystem.
Chekupedzisira, iyo nitrogen yakazara inoumbwa neammonia nitrogen, nitrate nitrogen uye organic nitrogen, uye chiratidzo chakakosha chinoratidza dhigirii rekusvibiswa kwekudya mumvura. Yakawandisa yakazara yakazara nitrogen yemukati haingosimudzire eutrophication yemitumbi yemvura uye kuumbwa kwealgal blooms, asi zvakare inoderedza kujeka kwemitumbi yemvura uye inotadzisa kukura kwezvisikwa zvemumvura. Uye zvakare, yakawandisa yakazara yakazara nitrogen yemukati inozokanganisawo kunaka uye kuravira kwemuviri wemvura, zvichikanganisa kunwa kwevagari uye hupenyu.
Kupfupisa, COD, ammonia nitrogen, phosphorus yakazara uye yakazara nitrogen zviratidzo zvakakosha zvinokanganisa kunaka kwemvura, uye huwandu hwavo hwepamusoro huchave nemhedzisiro yakaipa pamamiriro ezvakatipoteredza emvura uye hutano. Naizvozvo, muhupenyu hwezuva nezuva nekugadzira, isu tinofanirwa kusimbisa kutarisisa uye kutonga kwemhando yemvura, kutora matanho anoshanda ekudzikisa kusvibiswa kwemvura, uye kuchengetedza zviwanikwa zvemvura uye nharaunda yezvakatipoteredza.
Nguva yekutumira: Zvita-28-2023
