Niaj hnub no, peb tau teeb tsa lub rooj sib tham txog cov khoom. Kev kawm no feem ntau yog rau peb lub tuam txhab cov khoom hu uaTus Neeg Sawv Cev Tshem Tawm Hlau Hnyav.Cov khoom no muaj dab tsi xav tsis thoob?
Cleanwat cW-15 yog ib yam khoom uas tsis muaj tshuaj lom thiab tsis ua rau ib puag ncig puas tsuaj. Cov tshuaj no tuaj yeem tsim cov khoom sib xyaw ruaj khov nrog feem ntau cov hlau ions monovalent thiab divalent hauv cov dej khib nyiab, xws li: Fe2 +, Ni2 +, Pb2 +, Cu2 +, Ag +, Zn2 +, Cd2 +, Hg2 +, Ti + thiab Cr3 +, tom qab ntawd ua tiav lub hom phiaj ntawm kev tshem tawm cov tshuaj lom neeg hnyav ntawm dej. Tom qab kho, nag tsis tuaj yeem yaj los ntawm nag, Tsis muaj teeb meem kev ua qias tuaj ntxiv.
Tshem tawm cov hlau hnyav ntawm cov dej khib nyiab xws li: desulfurization wastewater los ntawm thee-fired fais fab nroj tsuag (ntub desulfurization txheej txheem) wastewater los ntawm Printed circuit board plating cog (Plated tooj liab), ElectroplatingHoobkas (Zinc), Kev yaug duab, Petrochemical cog, Tsheb tsim khoom cog thiab lwm yam.
Nws muaj kev nyab xeeb siab, Tsis muaj tshuaj lom, tsis muaj ntxhiab tsw phem, tsis muaj tshuaj lom tom qab kho. Nws siv tau rau hauv ntau yam pH, siv tau rau hauv cov dej khib nyiab uas muaj kua qaub lossis alkaline. Thaum cov hlau ions sib koom ua ke, lawv tuaj yeem raug tshem tawm tib lub sijhawm. Thaum cov hlau ions hnyav nyob rau hauv daim ntawv ntawm cov ntsev sib xyaw (EDTA, tetramine thiab lwm yam) uas tsis tuaj yeem tshem tawm tag nrho los ntawm txoj kev hydroxide precipitate, cov khoom no tuaj yeem tshem tawm nws thiab. Thaum nws tso cov hlau hnyav, nws yuav tsis yooj yim thaiv los ntawm cov ntsev sib koom ua ke hauv cov dej khib nyiab. Kev sib cais khoom khov-kua yooj yim. Cov hlau hnyav ruaj khov, txawm tias ntawm 200-250 ℃ lossis dilute acid. Thaum kawg, nws muaj txoj hauv kev ua yooj yim, yooj yim sludge dewatering.
Cov Tshuaj Tshem Tawm Cov Hlau Hnyav, Tshem Tawm Cov Hlau Hnyav, Nrog rau qhov zoo, tus nqi tsim nyog, kev xa khoom raws sijhawm thiab kev pabcuam tshwj xeeb los pab cov neeg siv khoom ua tiav lawv lub hom phiaj kom zoo, peb lub tuam txhab tau txais kev qhuas hauv kev lag luam hauv tsev thiab txawv teb chaws. Peb tos ntsoov yuav tau txais koj cov lus nug sai sai thiab vam tias yuav muaj lub sijhawm los ua haujlwm nrog koj yav tom ntej. Txais tos kom pom peb lub tuam txhab.
Lub sijhawm tshaj tawm: Lub Yim Hli-12-2021