PolyDADMAC: Zinthu zofunika kwambiri pa kuchotsa madzi m'matope

Kutaya madzi m'matope ndi gawo lofunika kwambiri pa njira yoyeretsera zinyalala. Cholinga chake ndikuchotsa bwino madzi omwe ali mumatope, kuti kuchuluka kwa matope kukhale kochepa, komanso kuti ndalama zotayira ndi malo otayira zichepetse. Munjira iyi, kusankha kwaFlocculantndiye kiyi, ndi PolyDADMAC, ngati njira yothandizaChopondera cha Cationic Polymer, ikuchita gawo lofunika kwambiri.

Choyamba, tiyenera kumvetsetsa kapangidwe ndi makhalidwe a matope. Madzi oundana ndi matope olimba omwe amapangidwa panthawi yokonza zimbudzi. Ali ndi zinthu zovuta monga zinyalala za organic, magulu a tizilombo toyambitsa matenda, tinthu tating'onoting'ono tomwe timapangidwa ndi zinthu zina. Zinthu zolimba zomwe zimayimitsidwa mu matope zimakhala ndi mphamvu yoipa ndipo zimatsutsana, pomwe madzi amadzaza pakati pa zinthu zolimba zomwe zimayimitsidwa, kotero kuchuluka kwa madzi koyambirira mu matope kumatha kufika 95%. Ngati matopewa sanakonzedwe pa nthawi yake, angayambitse kuipitsa chilengedwe. Chifukwa chake, momwe mungachitire bwino kuchotsa madzi oundana kwakhala nkhani yofunika kwambiri pankhani yokonza zimbudzi.

Mu ndondomeko yochotsera madzi m'matope,Ma Flocculant ochotsera madzi oundanandi chinthu chofunikira kwambiri chomwe chimakhudza. Flocculant imasonkhanitsa tinthu tating'onoting'ono tomwe tili mu matope kukhala tinthu tating'onoting'ono kudzera mu neutralization yamagetsi, adsorption bridging, ndi zina zotero, zomwe zimafulumizitsa njira yake yochepetsera madzi ndi kutaya madzi. Monga mankhwala omwe amagwiritsidwa ntchito makamaka pochiza madzi otayira komanso kutaya madzi m'matope, PolyDADMAC imagwira ntchito bwino pochepetsa madzi m'matope chifukwa cha kapangidwe kake kapadera ka mamolekyulu ndi kuchuluka kwa mphamvu.

Kapangidwe ka mamolekyu a PolyDADMAC kamapatsa mphamvu zambiri komanso mphamvu zabwino kwambiri zothira madzi. Panthawi yothira madzi m'matope, PolyDADMAC imatha kunyamula madzi mwachangu pamwamba pa tinthu ta matope, kuchepetsa mphamvu yoyipa pakati pa tinthu kudzera mu kuletsa magetsi, ndikulimbikitsa kupangika kwa ma flocs akuluakulu pakati pa tinthu tating'onoting'ono. Nthawi yomweyo, maunyolo a mamolekyu a PolyDADMAC amathanso kupanga kapangidwe kogwira mtima ka netiweki, kumamatira tinthu ta matope angapo pamodzi, kufinya madzi pakati pa tinthu ta matope, ndikupanga ma clumps omwe ndi osavuta kunyowetsa madzi, kotero kuti kuchuluka kwa madzi kuchepe kufika pa 60-80% kapena kutsika, ndipo kuchuluka kuchepe ndi 75-87%.

Poyerekeza ndi ma flocculant achikhalidwe osapangidwa, PolyDADMAC ili ndi kulemera kwakukulu kwa mamolekyulu ndi kuchuluka kwa mphamvu, zomwe zimaipangitsa kukhala ndi mphamvu yolimba yosuntha.PolyDADMACIli ndi mphamvu yabwino kwambiri yosungunuka, ndi yosavuta kugwiritsa ntchito, ndipo siipanga kuipitsa kwina. PD yokha siipanga sedimentation monga alum, kotero kuchuluka kwa matope owonjezera kungachepe. Ubwino uwu umapangitsa PolyDADMAC kukhala ndi mwayi waukulu wogwiritsa ntchito pochotsa madzi a matope.

Kapangidwe ka mamolekyu a PolyDADMAC kamapatsa mphamvu yayikulu komanso mphamvu zabwino kwambiri zokoka. Magulu angapo a cationic pa unyolo wake wa mamolekyu amatha kuchitapo kanthu ndi magulu a anionic pamwamba pa tinthu ta matope kuti apange ma ionic bond okhazikika, zomwe zimapangitsa kuti pakhale kukopa kwamphamvu. Kukoka kumeneku sikungothandiza kuchepetsa kukana pakati pa tinthu tating'onoting'ono, komanso kumathandiza kupanga ma flocs akuluakulu.

Kuwonjezera pa kapangidwe ka mamolekyulu ndi mphamvu za PolyDADMAC, kuchuluka kwake ndi mlingo wake ndi zinthu zofunika kwambiri zomwe zimakhudza mphamvu ya matope otayira madzi. Mkati mwa mtundu wina, pamene kuchuluka kwa PolyDADMAC kukuwonjezeka kapena mlingo ukuwonjezeka, mphamvu ya matope otayira madzi imatha kukwera. Komabe, kuchuluka kwambiri kapena mlingo woyipa kungayambitse zotsatira zosiyana, zomwe zimapangitsa kuti chitetezo cha colloid chitetezeke, zomwe zimachepetsa mphamvu ya matope otayira madzi. Chifukwa chake, pakugwiritsa ntchito moyenera, kuyesa ndi kukonza kuyenera kuchitika malinga ndi njira yeniyeni yochizira zinyalala ndi mphamvu za matope kuti adziwe kuchuluka ndi mlingo woyenera wa PolyDADMAC.