Kurapa kwemvura chikamu chakakosha chekuchengetedzwa kwezvakatipoteredza uye hutano hweveruzhinji, uye chinangwa chayo ndechekuvimbisa hutano hwemvura yakachengeteka uye kusangana nezvinodiwa zvekushandisa kwakasiyana. Pakati penzira dzakawanda dzekurapa mvura,polyaluminium chloride(PAC) inosarudzwa zvakanyanya kune yayo yakasarudzika zvivakwa uye inoshanda coagulation mhedzisiro.
Inoshanda coagulation mhedzisiro: PAC ine yakanakisa coagulation performance uye inogona kunyatso bvisa tsvina yakaita seyakamiswa solids, colloids uye isinganyungudika organic zvinhu mumvura uye kunatsiridza kunaka kwemvura.
Iyo michina yepolyaluminium chloride (PAC) se coagulant inonyanya kusanganisira kudzvanya kwemagetsi maviri layer, charge neutralization uye net trapping. Kudzvinyirirwa kwechikamu chemagetsi maviri kunoreva kuti mushure mekuwedzera PAC kumvura, aluminium ions uye chloride ions zvinogadzira adsorption layer pamusoro pezvikamu zvecolloidal, nekudaro kudzvanya mutsara wemagetsi maviri pamusoro pezvimedu zvecolloidal, zvichiita kuti dzisagadzikana uye kunyungudika; adsorption bridging is The cations in the PAC molecules inokwezva imwe neimwe uye yakaipa mhosva pamusoro peiyo colloidal particles, ichigadzira "bhiriji" chimiro chekubatanidza akawanda colloidal particles; mambure maitiro ari kuburikidza neadsorption uye bridging maitiro ePAC mamorekuru uye colloidal particles, iyo inombundira iyo colloidal particles. Yakabatwa mune network ye coagulant molecules.
Polyaluminium chloride inoshandiswa pakurapa mvura
Kuenzaniswa neinorganic flocculants, yakavandudza zvakanyanya decolorization maitiro edhayi. Maitiro ayo ekuita ndeokuti PAC inogona kusimudzira mamorekuru edhayi kuti aumbe ma flocs akanaka kuburikidza nekudzvanywa kana kusarerekera kwemagetsi kaviri layer.
Kana PAM ikashandiswa musanganiswa nePAC, iyo anionic organic polymer mamorekuru anogona kushandisa bhiriji mhedzisiro yemacheni avo marefu mamorekuru kugadzira flocs dzakakora pamwe nekubatana kweanovhiringidza agent. Iyi nzira inobatsira kugadzirisa kugadzirisa uye inoita kuti heavy metal ions zvive nyore kubvisa. Pamusoro pezvo, huwandu hukuru hwemapoka emamide ari mumacheni eparutivi eanionic polyacrylamide mamorekuru anogona kugadzira ma ionic bond ne -SON mumamorekuru edhayi. Kuumbwa kweichi chemikemikari chisungo kunoderedza kunyungudika kweiyo organic flocculant mumvura, nekudaro ichikurudzira kukurumidza kuumbwa uye kunaya kwemaflocs. Iyi yakadzika yekusunga michina inoita kuti zvinyanye kuomera kuti heavy metal ions itize, ichivandudza kushanda nekuita kwekurapa.
Mukutaura kwekubvisa phosphorus, kushanda kwe polyaluminium chloride hakugoni kuregererwa. Kana yawedzerwa kumvura ine tsvina ine phosphorus, inogona kuita hydrolyze kugadzira trivalent aluminum metal ions. Iyi ion inosungirira kune yakanyungudika phosphates mumvura ine tsvina, ichishandura iyo yekupedzisira kuita insoluble phosphate precipitates. Iyi nzira yekushandura inonyatsobvisa phosphate ions kubva mumvura yakasvibiswa uye inoderedza kuipa kwephosphorus pamitumbi yemvura.
Pamusoro pekuita kwakananga nephosphate, iyo coagulation mhedzisiro ye polyaluminium chloride inoitawo basa rakakosha mukubvisa phosphorus. Inogona kuwana adsorption uye bhiriji nekudzvanya iyo yekuchaja layer pamusoro peiyo phosphate ions. Izvi zvinokonzeresa kuti maphosphates uye zvimwe zvinosvibisa zvinosvibisa mumvura inorasika kuti zvikurumidze kuungana kuita mambure, kuita flocs dziri nyore kugadzirisa.
Zvinonyanya kukosha, kune yakanaka granular suspended solids inogadzirwa mushure mekuwedzera phosphorus yekubvisa agent, PAC inoshandisa iyo yakasarudzika mambure-inobata michina uye yakasimba yekuchaja neutralization mhedzisiro kusimudzira zvishoma nezvishoma kukura uye kukobvu kwezvakarembera izvi zvinyoro, uye zvino condense, aggregate, uye flocculate kuita zvidimbu zvakakura. Zvimedu izvi zvinobva zvagara pasi pasi, uye kuburikidza nekuparadzana kwakasimba-mvura, iyo supernatant fluid inogona kubudiswa, nekudaro inobudirira kubviswa kwephosphorus. Iyi nhevedzano yemaitiro akaomarara emuviri uye emakemikari anovimbisa kushanda uye kugadzikana kwekugadziriswa kwemvura yakasviba, ichipa vimbiso yakasimba yekuchengetedzwa kwezvakatipoteredza uye kushandiswazve kwemvura.
Nguva yekutumira: Jul-10-2024