PolyDADMAC: Zinthu zofunika pakuchotsa madzi amatope

Kutaya madzi m'thupi ndi sludge ndi gawo lofunika kwambiri lachimbudzi. Cholinga chake ndikuchotsa bwino madzi mu sludge, kotero kuti kuchuluka kwa matope kumakhala kochepa, ndipo ndalama zowonongeka ndi malo a nthaka zimachepetsedwa. Pochita izi, kusankha kwaFlocculantndiye fungulo, ndi PolyDADMAC, ngati yothandizacationic polima flocculant, akuchita mbali yofunika kwambiri.

Choyamba, tiyenera kumvetsetsa kapangidwe ndi katundu wa sludge. Sludge makamaka ndi dothi lolimba lomwe limapangidwa panthawi yachimbudzi. Lili ndi zigawo zovuta monga organic zinyalala, tizilombo magulu, inorganic particles ndi colloids. Zomwe zimayimitsidwa mumatope zimayimbidwa molakwika ndikuthamangitsana wina ndi mzake, pamene madzi amadzaza pakati pa zolimba zoyimitsidwa, kotero kuti madzi oyambirira a sludge amatha kufika 95%. kuwononga chilengedwe. Choncho, mmene bwino kuchita sludge dewatering wakhala nkhani yofunika kwambiri m'munda wa zimbudzi mankhwala.

Mu njira yothira madzi amatope,Flocculants kuti sludge dewateringndi chinthu chofunikira chokopa. The flocculant aggregates ting'onoting'ono particles mu sludge mu zikuluzikulu particles kudzera magetsi neutralization, adsorption mlatho, etc., imathandizira ake sedimentation ndi madzi m'thupi ndondomeko. Monga mankhwala omwe amagwiritsidwa ntchito makamaka pochiza madzi otayira komanso kutaya madzi m'thupi, PolyDADMAC imachita bwino pakutaya madzi m'thupi chifukwa cha mawonekedwe ake apadera a maselo ndi kachulukidwe kake.

Mapangidwe a mamolekyu a PolyDADMAC amapatsa kachulukidwe wapamwamba kwambiri komanso mawonekedwe abwino kwambiri adsorption. Panthawi ya sludge dehydration process, PolyDADMAC imatha kutsatsa mwachangu pamwamba pa tinthu tating'onoting'ono, kuchepetsa mphamvu yonyansa pakati pa tinthu tating'onoting'ono kudzera mumagetsi amagetsi, ndikulimbikitsa kupanga magulu akuluakulu pakati pa tinthu tating'onoting'ono. Panthawi imodzimodziyo, unyolo wa polyDADMAC ukhozanso kupanga maukonde ogwira mtima, kutchera particles angapo sludge palimodzi, kufinya madzi kuchokera pakati pa particles sludge, ndi kupanga clumps zomwe zimakhala zosavuta kutaya madzi, kuti voliyumu yamadzi ikhale yochepa. mpaka 60-80% kapena kutsika, ndipo voliyumu imatha kuchepetsedwa ndi 75-87%.

Poyerekeza ndi miyambo inorganic flocculants, PolyDADMAC ali apamwamba maselo kulemera ndi kachulukidwe chaji, kupereka mphamvu flocculation luso. Kuphatikiza apo,Zithunzi za PolyDADMACili ndi magwiridwe antchito abwino kwambiri osungunuka, ndi yosavuta kugwiritsa ntchito, ndipo samatulutsa kuipitsa kwachiwiri. PD palokha simapanga sedimentation ngati alum, kotero kuchuluka kwa sludge owonjezera akhoza kuchepetsedwa.Ubwino umenewu umapangitsa PolyDADMAC kukhala ndi chiyembekezo chochuluka chogwiritsira ntchito pamunda wa sludge dewatering.

Mapangidwe a mamolekyu a PolyDADMAC amapatsa kachulukidwe wapamwamba kwambiri komanso mawonekedwe abwino kwambiri adsorption. Magulu angapo a cationic pa unyolo wake wa maselo amatha kuchitapo kanthu ndi magulu a anionic pamwamba pa tinthu tating'onoting'ono tomwe timapanga tinthu tating'onoting'ono ta ionic, zomwe zimapangitsa kutsatsa kwamphamvu. Kutsatsa uku sikungothandiza kuchepetsa kukhumudwa pakati pa tinthu tating'onoting'ono, komanso kumathandiza kupanga magulu akuluakulu.

Kuphatikiza pa mawonekedwe a mamolekyu ndi katundu wa PolyDADMAC, ndende yake ndi mlingo wake ndizinthu zofunika zomwe zimakhudza kuchepa kwa madzi m'thupi. Mumitundu ina, kuchuluka kwa PolyDADMAC kumachulukira kapena mlingo ukuwonjezeka, ntchito yothira madzi ya sludge imatha kusintha. Komabe, kuchulukirachulukira kapena kumwa kwambiri kumatha kubweretsa zotsatira zina, zomwe zimapangitsa chitetezo cha colloid, chomwe chimachepetsa kuchepa kwa madzi m'thupi. Chifukwa chake, pazogwiritsa ntchito, kuyezetsa ndi kukhathamiritsa kuyenera kuchitidwa molingana ndi njira yachimbudzi yamadzimadzi komanso katundu wa sludge kuti adziwe ndende yoyenera ya PolyDADMAC ndi mlingo.