Kushaya mvura kubva mumarara chikamu chakakosha chekugadzirisa tsvina. Chinangwa chayo ndechekubvisa mvura iri mumarara zvinobudirira, kuitira kuti huwandu hwetsvina huve hushoma, uye mari yekurasa marara nenzvimbo yevhu zvideredzwe. Mukuita uku, kusarudzwa kweFlocculantndiyo kiyi, uye PolyDADMAC, senzira inoshandaChinoyerera cheCationic Polymer, iri kutamba basa rinokosha zvikuru.
Chekutanga, tinofanira kunzwisisa maumbirwo uye hunhu hwetsvina. Tsvina inonyanya kugadzirwa netsvina yakaoma panguva yekuchenesa tsvina. Ine zvinhu zvakaoma zvakaita semarara eorganic, mapoka ehutachiona, zvidimbu zvisingasanganisike uye colloids. Zvinhu zvakaoma zvakasungirirwa mutsvina zvinochajwa zvisina kunaka uye zvinodzingana, nepo mvura ichizadza pakati petsvina yakasungirirwa, saka huwandu hwemvura hwekutanga mutsvina hunogona kusvika 95%. Kana tsvina iyi ikasagadziriswa nenguva, inokonzera kusvibiswa kwezvakatipoteredza. Saka, nzira yekubvisa mvura zvinobudirira mutsvina yave nyaya yakakosha mumunda wekuchenesa tsvina.
Mukubvisa mvura mumarara,Zvinhu zvinogadziriswa mvura kubva mumatopechinhu chakakosha chinopesvedzera. Flocculant inounganidza zvidimbu zvidiki zviri mumatope kuita zvidimbu zvikuru kuburikidza ne electrical neutralization, adsorption bridging, nezvimwewo, zvichiita kuti ikurumidze sedimentation yayo uye kushaya mvura mumuviri. Sechigadzirwa chemakemikari chinoshandiswa zvakanyanya mukurapa mvura yakasviba uye kushaya mvura mumuviri, PolyDADMAC inoshanda zvakanaka mukushaya mvura mumuviri nekuda kwechimiro chayo chakasiyana chemolecular uye huwandu hwechaji.
Maumbirwo emamorekuru ePolyDADMAC anopa huwandu hwakawanda hwechaji uye hunhu hwakanaka hwekunyungudutsa mvura. Munguva yekudzikira kwemvura mumarara, PolyDADMAC inogona kukurumidza kunyungudutsa pamusoro pemarara, kuderedza simba rinodzongonyedza pakati pemarara kuburikidza nemagetsi, uye kukurudzira kuumbwa kwemarara makuru pakati pemarara. Panguva imwe chete, macheni emamorekuru ePolyDADMAC anogonawo kugadzira network structure inoshanda, achibata marara akawanda pamwe chete, achisvina mvura kubva pakati pemarara, uye achigadzira mabundu ari nyore kubvisa mvura, kuitira kuti huwandu hwemvura huderere kusvika 60-80% kana kutodzikira, uye huwandu hunogona kuderedzwa ne75-87%.
Kana tichienzanisa nemidziyo yemazuva ano isina kugadzirwa, PolyDADMAC ine huremu hwakawanda hwemamorekuru uye huwandu hwechaji, zvichiita kuti ikwanise kutenderera zvakanyanya. Pamusoro pezvo,PolyDADMACine simba rakanaka rekunyungudika, iri nyore kushandisa, uye haiburitse kusvibiswa kwechipiri. PD pachayo haiburitse sedimentation senge alum, saka huwandu hwetsvina yakawedzerwa hunogona kuderedzwa. Zvakanakira izvi zvinoita kuti PolyDADMAC ive netariro yakakura yekushandisa mukubvisa mvura yetsvina.
Maumbirwo emamorekuru ePolyDADMAC anopa huwandu hwayo hwekuchaja zvakanyanya uye hunhu hwakanaka hwekunyungudutsa. Mapoka akawanda ecationic ari pacheni yayo yemamorekuru anogona kuita nemapoka eanionic ari pamusoro pezvidimbu zvesludge kuti agadzire ma ionic bonds akagadzikana, zvichikonzera kunyungudutsa kwakasimba. Kunyungudutsa uku hakungobatsiri chete kuderedza kudzongonyedzwa pakati pezvikamu, asiwo kunobatsira kuumba maflocs makuru.
Pamusoro pemaumbirwo emamorekuru uye hunhu hwekuchaja hwePolyDADMAC, huwandu hwayo uye chiyero chayo zvinhu zvakakoshawo zvinokanganisa mhedzisiro yekushaya mvura mumarara. Mukati mehuwandu hwakati, sezvo huwandu hwePolyDADMAC huchiwedzera kana chiyero chichiwedzera, mashandiro ekudzima mvura mumarara anogona kuvandudzwa. Zvisinei, huwandu hwakawanda kana chiyero chakanyanya chinogona kutungamira kune mhedzisiro yakasiyana, zvichikonzera dziviriro yecolloid, izvo zvinoderedza mhedzisiro yekushaya mvura mumarara. Naizvozvo, mukushandiswa kunoshanda, kuyedza nekugadzirisa kunofanirwa kuitwa zvichienderana nehurongwa hwekurapa tsvina uye hunhu hwematope kuti uone huwandu hwakakodzera hwePolyDADMAC uye chiyero.
Nguva yekutumira: Gunyana-26-2024