I-PolyDADMAC, igama layo eliphelele i-polydimethyldiallylammonium chloride, i-polymer encibilikayo emanzini e-cationic esetshenziswa kabanzi emkhakheni wokwelapha amanzi. Ngenxa ye-cationic charge density eyingqayizivele kanye nokuncibilika kwamanzi okuphezulu, i-PolyDADMAC iyi-coagulant esebenza kahle engasusa ngempumelelo i-turbidity, umbala nokunye ukungcola emanzini. Kodwa-ke, ekusetshenzisweni okusebenzayo, kuvame ukusetshenziswa njenge-ai-flocculantngokuhlanganiswa namanye ama-coagulant ukwelapha indle yezimboni.
Izimpawu kanye nendlela yokusebenza ye-PolyDADMAC
I-PolyDADMAC ikhangisa ngokushesha futhi ihlanganise izinhlayiya ze-colloidal ezishajwa kabi kanye nezinto eziqinile ezimisiwe emanzini ngenxa yokuminyana kwayo okuphezulu kwe-cationic charge. Indlela yayo yokusebenza isekelwe ngokuyinhloko ekuhehweni kwe-electrostatic, okubangela ukuba lezi zinhlayiya ezincane zihlangane zibe yizinhlayiya ezinkulu, ukuze zisuswe ngokuphumelelayo phakathi nezinqubo zokuwa kwemvula noma zokuhlunga.
Indlela ye-flocculation ye-PolyDADMAC
I-Flocculation ingesinye sezinyathelo zenqubo ye-coagulation. Isho inqubo lapho i-
"izimbali ezincane ze-alum" ezakheka ngesikhathi senqubo yokuhlangana zakha ama-flocs anezinhlayiya ezinkulu ngokusebenzisa i-adsorption, ukungathathi hlangothi kukagesi, ukubhuloho kanye nokuthwebula inetha.
Embonini yokuhlanza amanzi, i-adsorption kanye ne-neuralization kagesi kufakwa kusigaba njengokuhlangana, kuyilapho i-bridging kanye ne-net-capture kufakwa kusigaba njenge-flocculation. Amakhemikhali ahambisanayo abizwa ngokuthi ama-coagulants nama-flocculants ngokulandelana.
Ngokuvamile kunenkolelo yokuthi i-PolyDADMAC inezindlela ezintathu zokwenza: i-adsorption, i-neutralization kagesi kanye nokuhlanganisa ibhuloho. Amabili okuqala yiwona ayinhloko. Kungakho i-PolyDADMAC ihlukaniswa njengama-coagulants. Kodwa-ke, abantu abaningi babheka i-coagulation kanye ne-flocculation njengenqubo efanayo, ngakho-ke i-PolyDADMAC ibizwa nangokuthi i-flocculant.
Ezinkambisweni zokwelashwa kwamanzi, i-PolyDADMAC isetshenziswa ngokuyinhloko njenge-flocculant ukuthuthukisa ikhwalithi yamanzi. Ngokukhethekile, iqembu le-cationic quaternary ammonium salt le-PolyDADMAC lingakwazi ukukhiqiza ukukhangwa kwe-electrostatic ngezinhlayiya ezimisiwe ze-anionic noma izinhlayiya ze-colloidal emanzini, okuholela ekungathathi hlangothi, kwakhe ama-flocs ezinhlayiya ezinkulu futhi azixazulule. Lawa ma-flocs ahlolwa ngesikhathi esilandelayo sedimentation noma inqubo yokuhlunga ukuze kuhlanzeke ikhwalithi yamanzi.
Izinzuzo ze-PolyDADMAC
Uma kuqhathaniswa nama-flocculants endabuko (i-alum, i-PAC, njll.), i-PolyDADMAC inezinzuzo ezilandelayo ezibalulekile:
Isebenza kahle: I-PolyDADMAC ingasusa ngokushesha ukungcola emanzini futhi ithuthukise ikhwalithi yamanzi.
Kulula ukuyisebenzisa: Ukusetshenziswa kwayo kulula, vele ungeze ngaphansi kwezimo ezifanele.
Ukusimama: I-PolyDADMAC inokusimama okuhle futhi ayibhidliki kalula njenge-polyacrylamide.
Umphumela oqinile we-flocculation: Iqembu le-cationic quaternary ammonium salt linikeza i-PDMDAAC ikhono eliqinile lokugeleza, ngaleyo ndlela liphathe ngempumelelo izimfanelo ezihlukahlukene zamanzi;
Ukumelana okuhle kukasawoti, ukumelana ne-asidi ne-alkali: I-PDMDAAC ifanele izimo zekhwalithi yamanzi eziyinkimbinkimbi, futhi isenokusebenza okuzinzile kwe-flocculation ngaphansi kwezimo ezinosawoti ophezulu, ezine-acidic noma ze-alkali;
Izindleko eziphansi: I-PolyDADMAC inokusebenza kahle kwe-flocculation kanye nomthamo ophansi, onganciphisa izindleko zokwelashwa kwamanzi.
Udaka oluphansi: I-PolyDADMAC ikhiqiza udaka oluncane kune-inorganic coagulants nama-flocculants futhi yonga izindleko zangemuva kokucubungula.
Umthamo we-PolyDADMAC kanye nezinyathelo zokuphepha
Uma usebenzisa i-PolyDADMAC, izinqubo zokusebenza kufanele zilandelwe ngokuqinile ukuze kuqinisekiswe imiphumela yokwelashwa efanele futhi kugwenywe imiphumela emibi engase ibe khona. Ngokuvamile, ngemva kokungeza ama-flocculants afana ne-polyaluminium chloride, i-PolyDADMAC iyengezwa ukuze kuzuzwe umphumela omuhle kakhulu wokuhlanganisa. Ngaphezu kwalokho, umthamo kufanele ulungiswe ngokufanele ngokuya ngekhwalithi yamanzi kanye nezidingo zokwelashwa. Umthamo ofanelekile unganqunywa ngokuhlolwa kwezimbiza.
Sekukonke,I-PolyDADMACidlala indima ebalulekile emkhakheni wokwelashwa kwamanzi. Ukuqonda okujulile kwezakhiwo zayo kanye nezicelo kuzosiza ukusebenzisa ngempumelelo lo mkhiqizo ukuthuthukisa ikhwalithi yamanzi nokuvikela imvelo.
Isikhathi sokuthumela: Nov-14-2024