Har'a phekolo ea metsi a litšila a indasteri, ho hatisa le ho daea metsi a litšila ke e 'ngoe ea metsi a litšila a thata ka ho fetisisa ho a hloekisa. A na le metsoako e rarahaneng, boleng bo phahameng ba chroma, mahloriso a phahameng, 'me ho thata ho a senya. Ke e 'ngoe ea metsi a litšila a indasteri a tebileng ka ho fetisisa le a thata ho a hloekisa a silafatsang tikoloho. Ho tlosoa ha chroma ho thata le ho feta har'a mathata.
Har'a mekhoa e mengata ea ho hatisa le ho daea metsi a litšila, tšebeliso ea ho kopanya ke mokhoa o sebelisoang haholo likhoebong. Hona joale, li-flocculant tse tloaelehileng tse sebelisoang likhoebong tsa khatiso le ho daea masela naheng ea heso ke li-flocculant tse thehiloeng ho aluminium le tšepe. Phello ea ho tlosa 'mala e mpe, 'me haeba dae e arabelang e tlosoa 'mala, ha ho na phello ea ho tlosa 'mala, 'me ho tla ntse ho e-na le li-ion tsa tšepe metsing a hloekisitsoeng, e leng se ntseng se le kotsi haholo 'meleng oa motho le tikolohong e potolohileng.
Sehlahisoa sa ho tlosa 'mala sa Dicyandiamide formaldehyde resin ke mofuta oa letsoai la ammonium la organic polymer flocculant. Ha e bapisoa le li-flocculant tse tloaelehileng tse tlosang 'mala, e na le lebelo la ho flocculant ka potlako, tekanyo e fokolang, 'me e angoa ke matsoai a kopanang hammoho, PH le Melemo e kang tšusumetso e fokolang ea mocheso.
Sehlahisoa sa ho tlosa 'mala sa dicyandiamide formaldehyde resin ke flocculant e sebediswang haholo bakeng sa ho tlosa 'mala le ho tlosa COD. Ha o e sebedisa, ho kgothaletswa ho fetola boleng ba pH ba metsi a ditshila hore e be a sa nke lehlakore. Ka kopo buisana le botekgeniki bakeng sa mekgwa e itseng ya tshebediso. Ho ya ka tshebedisano mmoho e mengata Maikutlo a tswang ho bahlahisi ba khatiso le ho daya ke hore dicyandiamide formaldehyde resin decolorizer e na le phello e kgolo hodima ho tlosa 'mala ha ho printa le ho daya metsi a ditshila. Sekgahla sa ho tlosa chroma se ka fihla ho feta 96%, mme sekgahla sa ho tlosa COD le sona se fihlile ho feta 70%.
Di-flocculant tsa polymer tsa tlhaho di sebedisitsoe ka lekgetlo la pele dilemong tsa bo-1950, haholo-holo di-flocculant tsa kalafo ya metsi tsa polyacrylamide, mme polyacrylamide e ka arolwa ka di-non-ionic, anionic, le cationic. Sehloohong sena, re tla utlwisisa flocculant ya acrylamide polymer dicyandiamide formaldehyde resin decolorizing e nosetswang ka quaternary amine hara di-flocculant tsa polymer tsa cationic organic.
Dicyandiamide formaldehyde resin decolorizing flocculant e qala ka ho arabela ka acrylamide le formaldehyde aqueous solution tlas'a maemo a alkaline, ebe e arabela ka dimethylamine, ebe e phodiswa le ho quaternized ka hydrochloric acid. Sehlahisoa se kopantswe ka ho fetoha mouoane ebe se sefshoa ho fumana acrylamide monomer e quaternized.
Flocculant ea dicyandiamide-formaldehyde condensation polymer decolorizing flocculant e ile ea hlahisoa lilemong tsa bo-1990. E na le phello e ikhethang e babatsehang ea ho tlosa 'mala oa metsi a litšila a dae. Phekolong ea metsi a litšila a mebala e phahameng le a mahloriso a phahameng, ho sebelisoa polyacrylamide kapa polyacrylamide feela. Polyaluminum chloride flocculant e ke ke ea tlosa pigment ka botlalo, 'me ka mor'a ho eketsa flocculant e decolorizing, e felisa tjhaja e mpe e khomaretsoeng limolek'huleng tsa dae ka metsing a litšila ka ho fana ka bongata ba li-cation 'me ka hona ea sitisa botsitso. Qetellong, ho thehoa palo e kholo ea li-floccules, tse ka monyang limolek'hule tsa dae ka mor'a ho flocculation le ho sitisa botsitso, e le ho fihlela morero oa ho fokotsa 'mala.
Mokhoa oa ho sebelisa decolorizer:
Mokhoa oa ho sebelisa flocculant e tlosang 'mala o tšoana le oa polyacrylamide. Le hoja ea pele e le mokelikeli, e hloka ho hlapolloa pele e ka sebelisoa. Moetsi o khothaletsa hore e hlapolloe ka 10%-50%, ebe e eketsoa metsing a litšila ebe e hlohlelletsoa ka botlalo. Etsa lipalesa tsa alum. Ntho e 'mala metsing a litšila a mebala e hlophisoa ebe e ntšoa ka ntle ho metsi, 'me e na le sedimentation kapa air flotation ho fihlela karohano.
Liindastering tsa khatiso le dae, masela le tse ling, tšebeliso ea metsi e kholo haholo 'me sekhahla sa ho sebelisoa hape se tlase. Ka hona, tšenyo ea mehloli ea metsi e atile haholo. Haeba ts'ebetso ena e sebelisoa ho etsa kalafo e tsoetseng pele le ho sebelisa hape metsi ana a litšila a indasteri a mebala e phahameng le a nang le mahloriso a mangata, Hase feela hore e ka boloka mehloli e mengata ea metsi a hloekileng a indasteri, empa e ka boela ea fokotsa ka ho toba ho ntšoa ha metsi a litšila a indasteri, e leng sa bohlokoa bo boholo le bo tebileng bakeng sa ho khothaletsa nts'etsopele e tsitsitseng ea indasteri ea khatiso, dae le masela.
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Nako ea poso: Pulungoana-16-2021