In kukonza madzi otayira m'mafakitaleKuchotsa zinthu zolimba zomwe zapachikidwa ndi chinthu chofunikira kwambiri. Sikuti izi zimathandiza kukweza ubwino wa madzi okha, komanso zimachepetsa kuwonongeka kwa zipangizo ndi kutsekeka. Pakadali pano, njira zochotsera zinthu zolimba zomwe zapachikidwa makamaka zimaphatikizapo sedimentation, filtration, flotation ndi flocculation. Pakati pawo, njira ya flocculation imagwiritsidwa ntchito kwambiri chifukwa cha kugwira ntchito kwake bwino komanso kotsika mtengo. Mu njira iyi, polima yotchedwa PolyDADMAC imagwira ntchito yofunika kwambiri.
PolyDADMAC, yomwe dzina lake lonse ndi Poly diallyl dimethyl ammonium chloride, ndi polima ya molekyulu yambiri. Imapangidwa makamaka ndi polymerizing diallyldimethylammonium chloride monomer kudzera mu chain growth polymerization. Polymerization reaction iyi nthawi zambiri imachitika pansi pa catalysis ya asidi kapena mchere, ndipo polymer yomangidwa bwino imatha kupezeka. Nthawi zambiri imakhala yachikasu kapena yoyera mpaka yachikasu kapena granules. Imasungunuka bwino ndipo imatha kufalikira mofanana m'madzi.
PolyDADMACIli ndi mphamvu zambiri ndipo nthawi zambiri imagwira ntchito ngati polima ya cationic. Izi zikutanthauza kuti imatha kunyamula zinthu zolimba zomwe zimapachikidwa ndi mpweya woipa komanso tinthu ta colloidal m'madzi kuti ipange ma floc akuluakulu, zomwe zimapangitsa kuti zinthu zolimba zomwe zimapachikidwa zichotsedwe bwino. PolyDADMAC nthawi zambiri imagwiritsidwa ntchito ngati flocculant ndi coagulant ndipo imagwiritsidwa ntchito kwambiri m'magawo osiyanasiyana oyeretsera madzi, kuphatikizapo kuyeretsa madzi otayira m'mafakitale komanso kuyeretsa zimbudzi za m'mizinda. Imatha kupanga ma floc akuluakulu komanso okhuthala mwachangu m'madzi otayira ndikuchotsa bwino zinthu zolimba zomwe zimapachikidwa, ma ayoni achitsulo cholemera ndi zinthu zoipitsa zachilengedwe.
Pochiza madzi otayira kuchokera ku pulp ndi mapepala, njira yogwirira ntchito ya PolyDADMAC imawonekera makamaka m'mbali zotsatirazi:
Kuletsa kutsatsira: Popeza PolyDADMAC ili ndi mphamvu zambiri zotsatsira, imatha kutsamira mwachangu pa zinthu zolimba zomwe zimayikidwa ndi colloidal zomwe zimayikidwa ndi mphamvu yoipa, zomwe zimapangitsa kuti zisamayende bwino chifukwa cha kuletsa kutsatsira, kenako n’kusonkhana kuti zikhale tinthu tating’onoting’ono tating’onoting’ono.
Kusefa: Pamene floc ikupangidwa, idzakoka zinthu zolimba zomwe zapachikidwa ndi tinthu ta colloidal m'madzi otayidwa kupita ku floc, zomwe zimapangitsa kuti madzi olimba ndi otayirira asiyane kudzera mu zochita zathupi.
Zotsatira za kugwidwa kwa maukonde: Ma polima okhala ndi mamolekyulu ambiri amatha kupanga kapangidwe ka netiweki yolimba, kutseka zinthu zolimba zopachikidwa ndi tinthu ta colloidal mmenemo ngati ukonde wosodza, motero zimapangitsa kuti pakhale kulekanitsidwa bwino.
Poyerekeza ndi njira zina zochizira madzi otayira, kugwiritsa ntchito PolyDADMAC pochiza madzi otayira a pulp ndi papermill kuli ndi ubwino wotsatira:
Kuchuluka kwa mphamvu yolipirira: Kuchuluka kwa mphamvu yolipirira kwa PolyDADMAC kumathandiza kuti itenge bwino zinthu zolimba zomwe zayimitsidwa ndi tinthu ta colloidal zomwe zayimitsidwa molakwika, zomwe zimapangitsa kuti chithandizo chizigwira bwino ntchito.
Kusinthasintha kwamphamvu: PolyDADMAC ili ndi zotsatira zabwino pa mitundu yosiyanasiyana ya madzi otayira a zamkati ndi mapepala ndipo sikhudzidwa ndi kusinthasintha kwa khalidwe la madzi.
Kugwiritsa ntchito bwino kwambiri komanso kugwiritsa ntchito pang'ono: Kugwiritsa ntchito PolyDADMAC ngatiFlocculantndi coagulant zimatha kuchepetsa kwambiri mlingo wa mankhwala, pomwe zimathandizira kuti chithandizo chigwire bwino ntchito komanso kuchepetsa ndalama zogwirira ntchito.
Wosamalira chilengedwe: PolyDADMAC ndi polima ya cationic. Floc yomwe imapangidwa ikagwiritsidwa ntchito siiwonongeka mosavuta kukhala zinthu zovulaza ndipo ndi yosamalira chilengedwe.
Pomaliza, PolyDADMAC, mongaPolima Yaikulu ya Molekyulu, ili ndi ubwino wogwiritsa ntchito bwino kwambiri, kugwiritsa ntchito pang'ono, komanso kusamala chilengedwe, ndipo imagwira ntchito yofunika kwambiri pochiza madzi otayika ochokera ku mphero za pulp ndi mapepala. Panthawi yomwe chizolowezi choteteza chilengedwe n'chovuta kukana, PolyDADMAC ndi mankhwala otchuka omwe amakwaniritsa mawonekedwe a zinthu zoteteza chilengedwe.
Nthawi yotumizira: Sep-12-2024