PolyDADMAC, yemwe dzina lake lonse ndi polydimethyldiallylammonium chloride, ndi cationic madzi sungunuka polima kuti chimagwiritsidwa ntchito pokonza madzi. Chifukwa chapadera cationic mlandu kachulukidwe ndi mkulu solubility madzi, PolyDADMAC ndi kothandiza coagulant kuti bwino kuchotsa turbidity, mtundu ndi zosafunika zina m'madzi. Komabe, m'malo ogwiritsira ntchito, nthawi zambiri amagwiritsidwa ntchito ngati aflocculantkuphatikiza ndi coagulants ena kuchiza zimbudzi mafakitale.
Makhalidwe ndi machitidwe a PolyDADMAC
PolyDADMAC imatsitsa mwachangu ndikuphatikiza tinthu tating'ono ta colloidal ndi zolimba zoyimitsidwa m'madzi chifukwa chakuchulukira kwake. Limagwirira ake zochita makamaka zochokera electrostatic kukopeka, amene amachititsa ting'onoting'ono particles kuti agglomerate mu lalikulu particles, kotero kuti angathe kuchotsedwa bwino pa mpweya wotsatira kapena kusefera njira.
Njira ya flocculation ya PolyDADMAC
Flocculation ndi imodzi mwamasitepe a coagulation. Zimatanthawuza njira yomwe ma
"maluwa ang'onoang'ono a alum" omwe amapangidwa panthawi ya coagulation amapanga ma flocs okhala ndi tinthu tating'onoting'ono kudzera mu adsorption, kusalowerera kwamagetsi, kutsekereza ndi kujambula ukonde.
M'makampani ochizira madzi, ma adsorption ndi kusamalidwa kwamagetsi amagawidwa ngati coagulation, pomwe bridging ndi kulanda maukonde amagawidwa ngati flocculation. Mankhwala ofanana amatchedwa coagulants ndi flocculants motero.
Nthawi zambiri amakhulupirira kuti PolyDADMAC ili ndi njira zitatu zochitira: kutsatsa, kusalowerera ndale kwamagetsi ndi kumangirira. Ziwiri zoyamba ndizo zikuluzikulu. Ichi ndichifukwa chake PolyDADMAC imatchedwa coagulants. Komabe, anthu ambiri amawona kuti coagulation ndi flocculation ndi njira yomweyo, motero PolyDADMAC imatchedwanso flocculant.
Mu njira zochizira madzi, PolyDADMAC imagwiritsidwa ntchito kwambiri ngati flocculant kuti ikhale yabwino. Makamaka, ndi cationic quaternary ammonium mchere gulu la PolyDADMAC akhoza kupanga electrostatic kukopeka ndi anionic inaimitsidwa particles kapena colloidal particles m'madzi, chifukwa neutralization, n'kupanga flocs zazikulu particles ndi kuthetsa iwo. Ma flocs awa amawunikidwa panthawi ya sedimentation kapena kusefera kuti ayeretse madzi.
Ubwino wa PolyDADMAC
Poyerekeza ndi ma flocculants achikhalidwe (alum, PAC, ndi zina), PolyDADMAC ili ndi zotsatirazi:
Kuchita bwino: PolyDADMAC imatha kuchotsa msanga zonyansa m'madzi ndikuwongolera madzi abwino.
Yosavuta kugwiritsa ntchito: Kugwiritsa ntchito kwake ndikosavuta, ingowonjezerani pamikhalidwe yoyenera.
Kukhazikika: PolyDADMAC ili ndi kukhazikika kwabwino ndipo sikuwonongeka mosavuta ngati polyacrylamide.
Wamphamvu flocculation zotsatira: The cationic quaternary ammonium mchere gulu amapereka PDMDAAC amphamvu flocculation luso, potero mogwira kuchitira zosiyanasiyana madzi makhalidwe;
Good mchere kukana, asidi ndi alkali kukana: PDMDAAC ndi oyenera zinthu zovuta madzi khalidwe, ndipo akadali khola flocculation ntchito pansi pa mchere wambiri, acidic kapena zamchere;
Mtengo wotsika: PolyDADMAC ili ndi mphamvu zambiri za flocculation komanso mlingo wochepa, womwe ukhoza kuchepetsa ndalama zothandizira madzi.
Dothi lotsika: PolyDADMAC imapanga matope ochepa kuposa ma coagulants ndi ma flocculants osakhazikika ndikusunga ndalama zolipirira pambuyo pokonza.
Mlingo wa PolyDADMAC ndi njira zopewera
Mukamagwiritsa ntchito PolyDADMAC, njira zogwirira ntchito ziyenera kutsatiridwa mosamalitsa kuti muwonetsetse zotsatira zabwino za chithandizo ndikupewa zovuta zomwe zingachitike. Nthawi zambiri, mutatha kuwonjezera ma flocculants monga polyaluminium chloride, PolyDADMAC imawonjezedwa kuti ikwaniritse bwino kwambiri coagulation. Kuonjezera apo, mlingo uyenera kusinthidwa moyenera malinga ndi khalidwe la madzi ndi zofunikira za mankhwala. Mlingo woyenera ukhoza kutsimikiziridwa ndi kuyezetsa mtsuko.
Komabe mwazonse,Zithunzi za PolyDADMACimagwira ntchito yofunika kwambiri pazamankhwala amadzi. Kumvetsetsa mozama za katundu ndi ntchito zake kudzathandiza kugwiritsa ntchito bwino mankhwalawa kuti apititse patsogolo madzi komanso kuteteza chilengedwe.
Nthawi yotumiza: Nov-14-2024