PolyDADMAC, yomwe dzina lake lonse ndi polydimethyldiallylammonium chloride, ndi polima yosungunuka m'madzi ya cationic yomwe imagwiritsidwa ntchito kwambiri pochiza madzi. Chifukwa cha kuchuluka kwake kwapadera kwa cationic charge komanso kusungunuka kwa madzi ambiri, PolyDADMAC ndi coagulant yothandiza yomwe imatha kuchotsa bwino kutayikira, utoto ndi zonyansa zina m'madzi. Komabe, pakugwiritsa ntchito, nthawi zambiri imagwiritsidwa ntchito ngati chothandiziraflocculantkuphatikiza ndi zinthu zina zolumikizirana kuti zigwiritsidwe ntchito pochiza zimbudzi zamafakitale.
Makhalidwe ndi njira yogwirira ntchito ya PolyDADMAC
PolyDADMAC imakoka ndi kusonkhanitsa mwachangu tinthu ta colloidal tomwe tili ndi mphamvu yoipa komanso zinthu zolimba zomwe zimapachikidwa m'madzi chifukwa cha kuchuluka kwa mphamvu ya cationic. Kagwiridwe kake ka ntchito kamadalira makamaka kukoka kwa electrostatic, komwe kumapangitsa tinthu tating'onoting'onoti kusonkhana kukhala tinthu tating'onoting'ono, kuti tithe kuchotsedwa bwino panthawi yamvula kapena kusefa.
Njira yolumikizirana ya PolyDADMAC
Kutsekeka kwa magazi ndi chimodzi mwa magawo a njira yotsekeka kwa magazi. Kumatanthauza njira yomwe
"Maluwa ang'onoang'ono a alum" omwe amapangidwa panthawi yolumikizana amapanga ma flocs okhala ndi tinthu tating'onoting'ono tomwe timalowa m'thupi kudzera mu kulowetsedwa kwa madzi, kuletsa magetsi, kulumikiza ndi kugwidwa ndi ukonde.
Mu makampani okonza madzi, kulowetsa madzi m'madzi ndi kuletsa magetsi kumagawidwa m'magulu a coagulation, pomwe bridging ndi net-capture zimagawidwa m'magulu a flocculation. Mankhwala ofanana nawo amatchedwa coagulants ndi flocculants motsatana.
Kawirikawiri amakhulupirira kuti PolyDADMAC ili ndi njira zitatu zogwirira ntchito: kulowetsa madzi m'thupi, kuletsa magetsi komanso kulumikiza. Zoyamba ziwiri ndizo zazikulu. Ichi ndichifukwa chake PolyDADMAC imagawidwa m'magulu a coagulants. Komabe, anthu ambiri amaona kuti coagulant ndi flocculation ndi njira yomweyo, kotero PolyDADMAC imatchedwanso flocculant.
Mu njira zochizira madzi, PolyDADMAC imagwiritsidwa ntchito makamaka ngati flocculant kuti iwonjezere ubwino wa madzi. Makamaka, gulu la mchere la cationic quaternary ammonium la PolyDADMAC limatha kupanga mphamvu zamagetsi ndi tinthu ta anionic suspended kapena tinthu ta colloidal m'madzi, zomwe zimapangitsa kuti madziwo asasunthike, ndikupanga tinthu tating'onoting'ono tating'onoting'ono ndikukhazikika. Tinthu tating'onoting'onoti timafufuzidwa panthawi yothira madzi kapena kusefa kuti ayeretse ubwino wa madzi.
Ubwino wa PolyDADMAC
Poyerekeza ndi ma flocculants achikhalidwe (alum, PAC, ndi zina zotero), PolyDADMAC ili ndi ubwino wotsatira:
Zogwira Ntchito: PolyDADMAC imatha kuchotsa zinyalala mwachangu m'madzi ndikuwonjezera ubwino wa madzi.
Yosavuta kugwiritsa ntchito: Kugwiritsa ntchito kwake ndikosavuta, ingowonjezerani pansi pazifukwa zoyenera.
Kukhazikika: PolyDADMAC ili ndi kukhazikika bwino ndipo siisweka mosavuta ngati polyacrylamide.
Mphamvu yothamanga kwambiri: Gulu la mchere wa cationic quaternary ammonium limapatsa mphamvu yothamanga kwambiri ya PDMDAAC, motero limathandiza bwino mitundu yosiyanasiyana ya madzi;
Kukana mchere bwino, kukana asidi ndi alkali: PDMDAAC ndi yoyenera pamavuto amadzi, ndipo imakhalabe ndi mphamvu yokhazikika yothira madzi pansi pa mchere wambiri, acid kapena alkali;
Mtengo wotsika: PolyDADMAC ili ndi mphamvu yothamanga kwambiri komanso mlingo wochepa, zomwe zingachepetse ndalama zoyeretsera madzi.
Dothi lochepa: PolyDADMAC imapanga matope ochepa kuposa ma coagulants ndi ma flocculants osapangidwa ndi zinthu zachilengedwe ndipo imasunga ndalama zogulira pambuyo pokonza.
Mlingo ndi zodzitetezera za PolyDADMAC
Pogwiritsa ntchito PolyDADMAC, njira zogwiritsira ntchito ziyenera kutsatiridwa mosamala kuti zitsimikizire zotsatira zabwino kwambiri za chithandizo ndikupewa zotsatirapo zoyipa zomwe zingachitike. Nthawi zambiri, mukawonjezera ma flocculants monga polyaluminium chloride, PolyDADMAC imawonjezeredwa kuti ikwaniritse zotsatira zabwino kwambiri zotsekeka. Kuphatikiza apo, mlingo uyenera kusinthidwa moyenera malinga ndi khalidwe la madzi ndi zofunikira pakuchiza. Mlingo woyenera ukhoza kudziwika ndi mayeso a mtsuko.
Komabe mwazonse,PolyDADMACimagwira ntchito yofunika kwambiri pa ntchito yokonza madzi. Kumvetsetsa bwino za makhalidwe ake ndi momwe amagwiritsidwira ntchito kudzakuthandizani kugwiritsa ntchito bwino mankhwalawa kuti madzi akhale abwino komanso kuteteza chilengedwe.
Nthawi yotumizira: Novembala-14-2024