Cov hlau hnyav yog ib pawg ntawm cov kab mob uas suav nrog cov hlau thiab cov hlau xws li arsenic, cadmium, chromium, cobalt, tooj liab, hlau, lead, manganese, mercury, nickel, tin thiab zinc. Cov hlau ions paub tias ua paug hauv av, huab cua thiab dej thiab muaj tshuaj lom txawm tias muaj tsawg heev.
Muaj ob qhov chaw tseem ceeb ntawm cov hlau hnyav hauv dej, qhov chaw ntuj thiab qhov chaw anthropogenic. Cov peev txheej ntuj muaj xws li volcanic kev ua ub no, av yaig, kev lom zem, thiab huab cua ntawm pob zeb thiab minerals, thaum anthropogenic qhov chaw muaj xws li landfills, roj hlawv, txoj kev khiav, dej phwj tuaj, kev ua liaj ua teb, mining, thiab industrial pollutants xws li textile dyes. Hnyav hlau yog cais raws li tshuaj lom thiab carcinogenic, lawv muaj peev xwm sib sau ua ke hauv cov ntaub so ntswg thiab ua rau muaj kab mob thiab mob.
Kev tshem tawm cov hlau hnyav ions los ntawm cov dej khib nyiab yog qhov tseem ceeb rau kev tu ib puag ncig thiab tib neeg kev noj qab haus huv. Muaj ntau txoj hauv kev qhia txog kev tshem tawm cov hlau hnyav ions los ntawm ntau qhov chaw dej khib nyiab. Cov txheej txheem no tuaj yeem muab faib ua adsorption, membrane, tshuaj, electro, thiab photocatalytic raws li kev kho mob.
Peb lub tuam txhab tuaj yeem muab tauHeavy Metal Remove Agent, Hnyav Hlau Tshem Tawm Tus Neeg Saib Xyuas CW-15 yog qhov tsis muaj tshuaj lom thiab ib puag ncig-phooj ywg hnyav hlau catcher. Cov tshuaj no tuaj yeem tsim ib qho chaw ruaj khov nrog feem ntau cov monovalent thiab divalent hlau ions hauv cov dej khib nyiab, xws li: Fe2+, Ni2+, Pb2+, Cu2+, Ag+, Zn2+, Cd2+, Hg2+, Ti+ thiab Cr3+, tom qab ntawd mus txog lub hom phiaj ntawm kev tshem tawm lub hlwb hnyav. los ntawm dej. Tom qab kev kho mob, nag lossis daus tsis tuaj yeem yaj los ntawm nag, Tsis muaj teeb meem ua paug thib ob.
Qhov zoo yog raws li nram no:
1. Kev nyab xeeb siab. Tsis muaj tshuaj lom, tsis muaj ntxhiab tsw phem, tsis muaj tshuaj lom cov khoom siv tom qab kho.
2. Cov nyhuv tshem tawm zoo. Nws tuaj yeem siv dav hauv pH ntau, tuaj yeem siv rau hauv cov kua qaub lossis alkaline cov dej khib nyiab. Thaum cov hlau ions coexist, lawv tuaj yeem raug tshem tawm tib lub sijhawm. Thaum cov hlau hnyav ions nyob rau hauv daim ntawv ntawm cov ntsev complex (EDTA, tetramine thiab lwm yam) uas tsis tuaj yeem raug tshem tawm tag nrho los ntawm txoj kev hydroxide precipitate, cov khoom no tuaj yeem tshem tawm thiab. Thaum nws sediment cov hlau hnyav, nws yuav tsis yooj yim cuam tshuam los ntawm coexisted ntsev hauv dej khib nyiab.
3. Zoo flocculation nyhuv. Khoom-kua sib cais yooj yim.
4.Heavy hlau sediments yog ruaj khov, txawm nyob rau ntawm 200-250 ℃ los yog dilute acid.
5. Cov txheej txheem ua haujlwm yooj yim, yooj yim sludge dewatering.
Yog tias koj txaus siab rau peb cov khoom, txais tos sab laj. Peb tseem ua hauj lwm pab koj thaum lub caij nplooj ntoos hlav Festival.
Post lub sij hawm: Jan-18-2023