OverviewPapermaking metsi a litšila haholo-holo a tsoa lits'ebetsong tse peli tsa tlhahiso ea ho hula le ho etsa pampiri indastering ea ho etsa pampiri. Pulping ke ho arola likhoele ho lihlahisoa tse tala tsa semela, ho etsa makhasi, ebe o a soeufatsa. Ts'ebetso ena e tla hlahisa metsi a litšila a mangata a etsang pampiri; ho etsa pampiri ke ho hlapolla, ho bopa, ho hatella le ho omisa makhasi ho etsa pampiri. Ts'ebetso ena e boetse e na le tšekamelo ea ho hlahisa metsi a litšila a etsang pampiri. Metsi a litšila a ka sehloohong a hlahisoang nakong ea ho hula ke joala bo ntšo le joala bo bofubelu, 'me ho etsa pampiri ho hlahisa metsi a masoeu haholo.
Likarolo tse ka sehloohong 1. Metsi a mangata a litšila.2. Metsi a litšila a na le palo e kholo ea lintho tse tiileng tse fanyehiloeng, haholo-holo enke, fiber, filler le additives.3. SS, COD, BOD le litšila tse ling tse ka metsing a litšila li batla li le holimo, COD e phahame ho feta BOD, 'me' mala o lefifi.
Morero oa kalafo le tharollo ea bothata.1. Mokhoa oa phekolo Mokhoa oa hajoale oa kalafo o sebelisa haholo mokhoa oa kalafo oa anaerobic, aerobic, 'mele le lik'hemik'hale le mokhoa oa ho kopanya oa sedimentation.
Mokhoa oa ho phekola le ho phalla: Ka mor'a hore metsi a litšila a kene ka mokhoa oa ho hloekisa metsi a litšila, a qala ho feta ka har'a sethala sa lithōle ho tlosa litšila tse kholoanyane, a kene ka letamong la marang-rang bakeng sa ho lekanngoa, a kene ka tanka ea coagulation, 'me a hlahisa karabelo ea coagulation ka ho eketsa polyaluminium chloride le polyacrylamide. Ka mor'a ho kena ho flotation, SS le karolo ea BOD le COD ka metsing a litšila li tlosoa. Metsi a phaphametseng a kenella kalafong ea biochemical ea anaerobic le ea aerobic ea mekhahlelo e 'meli ho tlosa boholo ba BOD le COD metsing. Ka mor'a tanka ea bobeli ea sedimentation, COD le chromaticity ea metsi a litšila ha li finyelle litekanyetso tsa naha tsa tlhahiso. Ho kopanya lik'hemik'hale ho sebelisoa bakeng sa phekolo e matlafalitsoeng e le hore metsi a litšila a ka finyella litekanyetso tsa ho tsoa kapa a ka finyella litekanyetso tsa tlhahiso.
Mathata a Tloaelehileng le Litharollo 1) COD e feta maemo. Ka mor'a hore metsi a litšila a tšoaroe ke anaerobic le aerobic biochemical treatment, COD ea litšila ha e finyelle litekanyetso tsa ho tsoa.Tharollo: Sebelisa mokhoa o phahameng oa ho senya COD moemeli oa SCOD bakeng sa phekolo. E kenye metsing ka tekanyo e itseng 'me u arabe ka metsotso e 30.
2) Bobeli chromaticity le COD li feta tekanyetso Ka mor'a hore metsi a litšila a hloekisoe ka anaerobic le aerobic biochemical treatment, COD ea litšila ha e finyelle litekanyetso tsa ho tsoa. Tharollo: Eketsa flocculation decolorizer e sebetsang hantle haholo, kopanya le decolorizer e sebetsang hantle, 'me qetellong u sebelise polyacrylamide bakeng sa ho phalla le pula, karohano ea metsi a tiileng.
3) Ammonia nitrogen e feteletseng Ammonia nitrogen e litšila ha e khone ho fihlela litlhoko tsa hona joale tsa mosi. Tharollo: Eketsa sehlahiswa sa ammonia nitrogen, hlohlelletsa kapa o kene moyeng mme o kopanye, mme o arabe metsotso e 6. Leloaleng la pampiri, ammonia nitrogen e litšila e ka ba 40ppm, 'me tekanyetso ea lehae ea ammonia nitrogen e ka tlase ho 15ppm, e sa khoneng ho fihlela litlhoko tsa moea tse boletsoeng ke melaoana ea tšireletso ea tikoloho.
Qetello Ho etsa pampiri ho hloekisa metsi a litšila ho lokela ho shebana le ho ntlafatsa sekhahla sa ho sebelisoa hape, ho fokotsa tšebeliso ea metsi le ho qhalloa ha metsi a litšila, 'me ka nako e ts'oanang, e lokela ho hlahloba ka mafolofolo mekhoa e mengata e tšepahalang, ea moruo le ea litšila e ka sebelisang lisebelisoa tsa bohlokoa ka botlalo metsing a litšila. Mohlala: mokhoa oa ho phaphamala o ka khutlisa lintho tse tiileng ka metsing a masoeu, ka sekhahla sa ho hlaphoheloa ho fihla ho 95%, mme metsi a hlakileng a ka sebelisoa hape; mokhoa oa ho chesa metsi a litšila o ka khutlisa sodium hydroxide, sodium sulfide, sodium sulfate le matsoai a mang a sodium a kopantsoeng le lintho tse phelang metsing a matšo. Neutralization mokhoa oa ho hloekisa metsi a litšila o fetola boleng ba pH ba metsi a litšila; coagulation sedimentation kapa flotation e ka tlosa likaroloana tse kholo tsa SS metsing a litšila; lik'hemik'hale precipitation mokhoa ka decolorize; mokhoa oa phekolo ea likokoana-hloko o ka tlosa BOD le COD, e sebetsang haholoanyane bakeng sa metsi a litšila a pampiri ea kraft. Ntle le moo, ho boetse ho na le reverse osmosis, ultrafiltration, electrodialysis le mekhoa e meng ea ho etsa pampiri ea litšila e sebelisoang lapeng le kantle ho naha.
Nako ea poso: Jan-17-2025