Kev soj ntsuam kev tsom xam ntawm daim ntawv thov hauv kev kho cov dej khib nyiab
1. Cov lus qhia yooj yim
Hnyav hlau muaj kuab paug rau ib puag ncig los ntawm cov hlau hnyav lossis lawv cov khoom sib txuas. Feem ntau yog los ntawm tib neeg cov yam xws li kev siv roj mining, Khib dej Nyuaj, dej phwj dej thiab siv cov khoom hlau hnyav. Piv txwv li, huab cua tus kab mob huab cua thiab cov kab mob huab cua hauv Nyij Pooj yog tshwm sim los ntawm kev muaj kuab paug viecution thiab cadmium phem ntsig. Cov degree ntawm kev tsim txom yog nyob ntawm lub siab thiab tshuaj chemical ntawm cov hlau hnyav nyob hauv ib puag ncig, khoom noj khoom haus thiab kab mob. Hnyav hlau ua qias tuaj yog feem ntau ua kom muaj kuab paug dej paug, thiab ib feem ntawm nws yog nyob rau hauv cov huab cua thiab khoom khib nyiab.
Cov hlau hnyav tuaj yeem hais txog cov hlau uas muaj lub ntiajteb txawj nqus (ceev) ntau dua 4 lossis 5, thiab muaj li ntawm 45, Vanadium, pob tw, khawm, titanium, manganese , cadmium, mercury, tungenten, molybdenum, kub, nyiaj, tooj liab, zinc thiab lwm yam hnyav me me Cov ntsiab lus yuav tsum muaj rau cov haujlwm hauv lub neej, feem ntau ntawm cov rog xws li muaj cov mercury, thiab txhua yam hnyav ua ke ib qho kev xav tau zoo dua rau tib neeg lub cev.
Cov hlau hnyav feem ntau muaj nyob hauv cov xwm hauv cov muaj suab nrov. Txawm li cas los xij, vim qhov nce zuj zus, smelting, ua thiab ua lag luam thiab cov khoom lag luam muaj ntau yam xws li, cob qhia, dej, thiab av. Ua rau muaj kuab paug nyob ib puag ncig. Cov hlau hnyav hauv ntau hom ntawv siv tshuaj lossis cov khoom siv tshuaj lom neeg yuav ua rau thiab tsiv teb tsaws chaw tom qab nkag mus rau ib puag ncig lossis cov kab mob ecosystem, ua rau muaj kev phom sij. Piv txwv li, cov hlau hnyav tawm nrog dej khib nyiab tuaj yeem ua rau muaj cov ntses thiab pob zeb hauv qab, thiab muaj cov khoom noj khoom haus, yog li ua rau muaj kuab paug. Piv txwv li, kev zam dej hauv Nyij Pooj yog tshwm sim los ntawm kev siv tshuaj mercurged los ntawm caustic dej mercury los ntawm kev ua haujlwm ntawm roj ntsha; Lwm qhov piv txwv yog qhov mob, uas yog tshwm sim los ntawm Cadmium tau tawm ntawm zinc smelting kev lag luam thiab cadmium electroplating kev lag luam. Rau. Txhuas rho tawm ntawm kev tso pa rau ib puag ncig, ua rau muaj kev sib txawv ntawm tib neeg cov kev ua kom zoo nkauj tam sim no, thiab ua phem rau tib neeg kev noj qab haus huv Cov.
MacRomolececular Hnyav Tus Neeg Saib Xyuas Cov Dej Xim Hlau, ua rau muaj ntau yam hlau, xws li HG2 +, NI2 +, ZN2 +, CR3 +, thiab lwm yam. Nws hnov mob Txhawm rau tsim cov dej ua ke dej-insoluble ua ke nrog kev tshem tawm tus nqi ntawm ntau tshaj 99%. Txoj kev kho yog yooj yim thiab yooj yim, tus nqi yog tsawg, tus nqi ntawm sludge yog me me, ruaj khov, thiab tsis muaj kuab paug. Nws tuaj yeem yog qhov dav siv hauv kev kho kom muaj kev lag luam hauv kev lag luam, tsuas thiab zom, nroj tsuag ua kev lag luam desulfurization thiab lwm yam kev lag luam. Muaj feem ntau photion: 2-7.
2. Cov Khoom Daim Ntawv Thov Teb
Raws li kev siv hluav taws xob zoo heev ion ion remover, nws muaj ntau cov ntawv thov. Nws tuaj yeem siv rau yuav luag txhua cov dej pov tseg muaj cov hlau hnyav.
3. Siv txoj kev thiab cov txheej txheem ntws
1. Yuav siv li cas
1. Ntxiv thiab do
Tus neeg saib xyuas cov dej polymer hnyav hlau kom ncaj qha rau cov tshuaj tiv thaiv hnyav, kom muaj cov dej khib nyiab, cov qauv zoo tshaj plaws, qhov zoo tshaj plaws yog kom do txhua 10min-sij hawm;
②for tsis paub meej cov hlau puab ntau hauv cov neeg lim dej, kev sim kev sim yuav tsum tau siv los txiav txim siab cov hlau hnyav ntxiv.
Kev kho mob ntawm cov tshuaj khib nyiab uas muaj cov hlau hnyav nrog cov khoom sib txawv, tus nqi ntawm cov ntaub ntawv raw ntxiv tuaj yeem tswj tau los ntawm ortp
2. Cov cuab yeej siv tau thiab cov txheej txheem thev naus laus zis
1. Pretreat dej 2. Txhawm rau kom tau PH = 2-7, ntxiv cov kua qaub lossis alkali los ntawm pho regulator 4. Flocculant (poov tshuaj aluminium aluminium alkos), potassium ntawm lub tank storring tank 10min, cia sij hawm ntawm agglomeration tank 10min 7, Sloping phaj sedimation tank 8, resudge 9, lim 121, zaum kawg pT tswj ntawm lub pas dej ntws 12, tso dej tawm
4. Kev Ntsuam Xyuas Ntawm Cov Nyiaj Pab Nyiaj Txiag
Noj electroplating wastewater ua ib qho hnyav hnyav hlau pov tseg, hauv cov tuam txhab kev lag luam no, cov tuam txhab ua tiav yuav ua tiav cov txiaj ntsig kev sib raug zoo thiab kev lag luam loj thiab nyiaj txiag. Electroplating wastewater feem ntau yog los ntawm rinsing dej ntawm plating seem thiab ib qho me me ntawm cov txheej txheem pov tseg ua kua. Hom, cov ntsiab lus thiab daim ntawv ntawm cov hlau hnyav hauv cov khoom pov tseg, feem ntau muaj tooj liab, zinc, cadmium, thiab npib tsib xee. Cov. Raws li cov txheeb cais tsis tiav, qhov kev tawm ntawm cov dej khib nyiab ntawm kev lag luam electroplating ntawm kev lag luam ib leeg tshaj 400 lab tons.
Tshuaj lom neeg kho mob ntawm electroplating Wastewater tau raug lees paub tias yog qhov ua tau zoo tshaj plaws thiab meej qauv. Txawm li cas los xij, txiav txim los ntawm cov txiaj ntsig ntawm ntau xyoo, cov qauv tshuaj muaj teeb meem xws li kev ua haujlwm tsis ruaj khov, kev lag luam muaj txiaj ntsig thiab cov nyhuv txom nyem. Tus neeg sawv cev ua haujlwm polymer hnyav hlau dej yog daws tau zoo. Qhov teeb meem saum toj no.
4. Kev tshuaj xyuas qhov project
1. Nws muaj lub peev xwm txo lub peev xwm rau CRV, cov phua ntawm kev txo qis cr "yog dav (2 ~ 6), thiab feem ntau ntawm lawv yog me ntsis acidic
Cov mixed wastewater tuaj yeem tshem tawm qhov xav tau ntxiv cov kua qaub.
2. Nws yog qhov muaj txiaj ntsig alkaline, thiab tus nqi PH yuav tau nce tib lub sijhawm nws ntxiv. Thaum tus xov tooj pH mus txog 7.0, CR (VI), CR3 +, NU2 +, NE2 +, FE2 +, FE2 + yog, cov hlau hnyav tuaj yeem ua rau tus nqi ntawm VI. Cov tshuaj kho kom tau raws li lub teb chaws thawj-chav tshem tawm tus qauv
3. Tus nqi tsawg. Piv nrog cov ib txwm sodium sulfide, tus nqi ua yog txo los ntawm ntau dua rmb 0.1 ib tuj.
4. Kev ua nrawm nrawm nrawm, thiab ib puag ncig kev tiv thaiv kev tiv thaiv yog qhov ua tau zoo heev. Cov nag lossis daus yog yooj yim los khom, uas yog ob zaug kom nrawm li ntawm cov txiv qaub txoj kev. Ua ntej los nag lossis daus ntawm F-, P043 nyob rau hauv wastewater
5. Tus nqi ntawm sludge yog me me, tsuas yog ib nrab ntawm cov tshuaj lom neeg nag lossis daus
6. Tsis muaj cov qias neeg thib ob ntawm cov hlau hnyav tom qab kev kho mob, thiab kev pib tooj liab carbonate yog yooj yim rau hydrolyze;
7. Tsis muaj clogging daim ntaub lim, nws tuaj yeem ua tiav tas mus li
Tau qhov twg los ntawm kab lus no: SAMA AIWEN qhia cov ntaub ntawv
Lub Sijhawm Post: Nov-29-2021