In mankhwala otayira m'mafakitale, kuchotsedwa kwa zolimba zoyimitsidwa ndi ulalo wofunikira. Izi sizimangothandiza kukonza madzi abwino, zimachepetsanso kuwonongeka kwa zida ndi kutseka. Pakalipano, njira zochotsera zolimba zomwe zayimitsidwa makamaka zimaphatikizapo sedimentation, filtration, flotation ndi flocculation. Pakati pawo, njira ya flocculation imagwiritsidwa ntchito kwambiri chifukwa chakuchita bwino komanso chuma. Mwanjira iyi, polima yotchedwa PolyDADMAC imagwira ntchito yofunikira.
PolyDADMAC, yomwe dzina lake lonse ndi Poly diallyl dimethyl ammonium chloride, ndi polima wapamwamba kwambiri. Amapangidwa makamaka ndi polymerizing diallyldimethylammonium chloride monomer kudzera unyolo kukula polymerization. Izi polymerization anachita zambiri ikuchitika pansi catalysis asidi kapena mchere, ndi liniya dongosolo polima akhoza analandira. Nthawi zambiri ndi madzi achikasu kapena oyera mpaka ufa wachikasu kapena ma granules. Imakhala ndi kusungunuka kwabwino ndipo imatha kumwazikana mofanana munjira zamadzimadzi.
Zithunzi za PolyDADMACali ndi kachulukidwe wapamwamba kwambiri ndipo amakhala ngati cationic polima. Izi zikutanthauza kuti akhoza adsorb zoipa inaimitsidwa zolimba ndi colloidal particles m'madzi kupanga lalikulu flocs, potero kukwaniritsa ogwira kuchotsa inaimitsidwa zolimba. PolyDADMAC nthawi zambiri imagwiritsidwa ntchito ngati flocculant ndi coagulant ndipo imagwiritsidwa ntchito kwambiri m'malo osiyanasiyana opangira madzi, kuphatikiza mankhwala amadzi otayira m'mafakitale komanso kuyeretsa zimbudzi zamatawuni. Imatha kupanga mwachangu ma flocs akulu ndi owundana m'madzi otayidwa ndikuchotsa bwino zolimba zoyimitsidwa, ma ion zitsulo zolemera ndi zowononga zachilengedwe.
Pochiza madzi otayidwa kuchokera ku zamkati ndi mphero zamapepala, kachitidwe ka PolyDADMAC kumawonekera makamaka muzinthu izi:
Malipiro neutralization: Chifukwa PolyDADMAC ali mkulu mlandu kachulukidwe, akhoza mwamsanga adsorb pa zoipa anaimbidwa zolimba ndi colloidal particles, kuwachititsa kutaya bata chifukwa cha ndalama neutralization, ndiyeno aggregate kupanga flocs a particles lalikulu.
Kusesa: Pamene floc aumbike, izo adzakoka inaimitsidwa zolimba ndi colloidal particles mu madzi oipa mu floc, kukwaniritsa olimba-zamadzimadzi kulekana mwa kuchitapo kanthu thupi.
Net-capture effect: High-molecular polima amatha kupanga wandiweyani maukonde dongosolo, msampha zolimba inaimitsidwa ndi colloidal particles mmenemo ngati ukonde usodzi, potero kukwaniritsa imayenera kulekana.
Poyerekeza ndi njira zina zochizira madzi oyipa, kugwiritsa ntchito PolyDADMAC pochiza zamkati ndi madzi otayira pamapepala ali ndi izi:
Kuchulukirachulukira kwakukulu: Kuchulukana kwamphamvu kwa PolyDADMAC kumapangitsa kuti izitha kuyamwa bwino zolimba zoyimitsidwa ndi tinthu tating'onoting'ono ta colloidal, ndikuwongolera chithandizo chamankhwala.
Kusinthasintha kwamphamvu: PolyDADMAC ili ndi zotsatira zabwino zochizira mitundu yosiyanasiyana ya zamkati ndi madzi otayira pamapepala ndipo sizimakhudzidwa ndi kusinthasintha kwamadzi.
Kugwiritsa ntchito bwino kwambiri komanso kugwiritsa ntchito pang'ono: Kugwiritsa ntchito PolyDADMAC ngatiFlocculantndi coagulant akhoza kwambiri kuchepetsa mlingo wa mankhwala, pamene kukonza bwino chithandizo ndi kuchepetsa ntchito ndalama.
Wochezeka ndi chilengedwe: PolyDADMAC ndi polima cationic. Floc yomwe imapangidwa pambuyo pa kugwiritsidwa ntchito sikuwonongeka mosavuta kukhala zinthu zovulaza komanso ndi zachilengedwe.
Pomaliza, PolyDADMAC, monga aHigh Molecular Polymer, ili ndi ubwino wochita bwino kwambiri, kugwiritsira ntchito mochepa, komanso kusamala zachilengedwe, ndipo imagwira ntchito yofunika kwambiri poyeretsa madzi otayidwa kuchokera ku zamkati ndi mapepala. Panthawi yomwe chikhalidwe chachitetezo cha chilengedwe chimakhala chovuta kukana, PolyDADMAC ndi mankhwala odziwika bwino omwe amakumana ndi zinthu zomwe zimagwirizana ndi chilengedwe.
Nthawi yotumiza: Sep-12-2024