Industrial sehlopheng mokelikeli polyaluminium chloride

I. Tlhaloso le Litšobotsi

Mokelikeli oa maemo a indasteri Polyaluminum chloride (PAC), e leng coagulant ea polymer e sa pheleng, e na le foromo ea lik'hemik'hale [Al2(OH)nCl6−n]m[Al2​(OH)n​Cl6−n​]m​. E thehoa ka ho kopanya li-ion tsa hydrogen-oxygen le polymerization ea anion e ngata. Ha e bapisoa le li-flocculant tsa setso joalo ka aluminium sulfate, PAC e metsi e fana ka melemo e meholo:

• Ho phaphamala ha metsi ka katleho e phahameng: boima bo boholo ba limolek'hule le bongata ba tjhaja bo phahameng li ka monya dikarolwana tsa colloidal ka potlako metsing, tsa etsa lipalesa tse kgolo le tse teteaneng tsa alum, mme lebelo la ho sedimentation le eketsoa ka ho feta 30%.
• Ho ikamahanya le maemo ka bophara: pH e sebetsang ka bophara (5.0-9.0), ts'ebetso e tsitsitseng tikolohong e tlase ea mocheso, e sebetsang hantle bakeng sa metsi a nang le mongobo o mongata, metsi a litšila a oli le metsi a litšila a tšepe e boima.
• Ho senyehe le polokeho e tlase: ho senyehehe ho tlase ho feta ha coagulant ya letswai la tshepe, mme masalla a tshepe e boima a fihlela maemo a naha ka tieo (jwalo ka arsenic ≤ 0005%, loto ≤ 0.006%).

II. Theknoloji ea tlhahiso le ho hlopha ka botekgeniki

Tlhahiso ea indasteri ea PAC e metsi e itšetlehile haholo ka lits'ebetso tse latelang:

• Mokhoa oa aluminium ea tšepe: molora oa aluminium le slag ea aluminium li sebelisoa e le thepa e tala, ebe li butsoa le ho polima ka hydrochloric acid. E theko e tlase empa ho thata ho laola bohloeki, kahoo e loketse kalafo e tloaelehileng ea likhoerekhoere tsa indasteri.
• Mokhoa o sebetsang oa aluminium hydroxide: ho sebelisoa phofo ea aluminium hydroxide e hloekileng haholo, 'me tekanyo ea motheo oa letsoai e fetoloa kamora ho qhibiliha ha asiti tlas'a khatello (40%-90%). Sehlahisoa se na le tšepe e boima e tlase 'me se loketse boleng bo holimo ba metsi.
• Mokhoa oa pele oa betri: chip ea aluminium (anode) le cathode ea tšepe li sebelisoa ka har'a hydrochloric acid ho iketsa eka lia ichesa, e leng se bolokang matla le se sebetsang hantle, empa se hloka ho laola litšila tsa tšepe e boima ka tieo.
• Mokhoa oa katoloso ea ho omisa ka spray: PAC e metsi e ka omisoa ka har'a tora ea spray ho hlahisa lihlahisoa tse tiileng, empa mofuta oa mokelikeli o felisa mohato oa ho qhibiliha 'me ts'ebetso e ba bonolo haholoanyane.

3. Maemo a mantlha a ts'ebeliso

ho lahla litšila tsa indasteri

• Ho hatisa le ho daea/ho daea metsi a litšila a letlalo: sekhahla sa ho tlosa 'mala se fihla ho feta 85%, e leng se senyang COD (tlhoko ea oksijene ea lik'hemik'hale).
• Metsi a litšila a fluoride/tšepe e kotsi: li-ion tsa fluoride le lintho tse chefo tse kang loto le chromium li tlosoa ka pula e rarahaneng.
• Ho etsa pampiri/mashala a hlatsoang metsi a litšila: ho potlakisa ho qhibilihisa mashala a silafalitsoeng, ho fumana lintho tse tiileng tse thusang, le ho fokotsa Khamphani ea Metsisepheo sa seretse.

Tsamaiso ea tsamaiso ea metsi litoropong

• Ho hlwekisa metsi: tlosa dintho tse tiileng tse leketlileng le di-colloid metsing a polokelo le a ka tlasa lefatshe, mme o fokotse ho fifala ha metsi ho fihlela ka tlase ho 0.5 NTU.
• Kalafo ea likhoerekhoere tsa masepala: hammoho le polyacrylamide e ka ntlafatsa katleho ea ho tlosa metsi a litšila le ho fokotsa litšenyehelo tsa ho li lahla.

Tokiso e khethehileng ea boleng ba metsi

• Ho tlosoa ha libopuoa tsa metsi tse nang le mahlaseli a kotsi;
• Ho tlosoa ha phosphorus le naetrojene metsing a litšila a temo ea litlhapi ho thibela ho bola ha limela.

IV. Di-parameter tsa bohlokwa tsa tshebetso le ditlhaloso tsa tshebediso

Lintlha tsa bohlokoa:

• tekanyo: Tekanyo e tloaelehileng ea PAC e metsi ke 3-40 kg/lithane tse 1000 tsa metsi, 'me boleng bo botle ka ho fetisisa bo lokela ho khethoa ke teko ea beaker.
• Litlhoko tsa ho qhibiliha: eketsa kapa lokisa tharollo ea 5%-10% ka kotloloho ho qoba ho khomarela ho feteletseng ho lebisang ho hloleheng ha hydrolysis.

Ho se lumellane: Polokelo e nang le metsoako e matla ea oxidizing le metsoako ea tlhaho e thibetsoe ho thibela tšenyo ea meaho ea polymer.

V. Mekhoa ea Nts'etsopele le Liphephetso tsa Tikoloho

• Tlhahiso e tala: Ntlafatsa ts'ebetso ka molora o fofang, gangue ea mashala le litšila tse ling tse tiileng e le lisebelisoa tse tala ho fokotsa tšebeliso ea mehloli.
• Tšebeliso e nepahetseng: Foromo e entsoeng ka PAC e etselitsoeng mefuta e fapaneng ea metsi a litšila (mohlala, metsi a litšila a mafura/a letsoai le lengata).
• Taolo ea aluminium e setseng: ntlafatsa ts'ebetso ea polymerization ho fokotsa ion ea aluminium e setseng ka metsing le ho qoba likotsi tsa tikoloho.

Mokelikeli oa indasteri oa polyaluminum chloride o fetohile moemeli oa lik'hemik'hale o ke keng oa nkeloa sebaka tsamaisong ea sejoale-joale ea phekolo ea metsi ka lebaka la litšobotsi tsa eona tsa bokhoni bo phahameng, bongata ba 'mele le litšenyehelo tse tlase. Lipatlisiso tsa nakong e tlang li hloka ho leka-lekanya ntlafatso ea bokhoni le polokeho ea tikoloho, le ho khothaletsa ts'ebeliso ea eona e ncha tlas'a sepheo sa "ho ntša metsi ka lefela".