Cov dej muaj kuab paug hauv cov mines tuaj yeem faib ua ntxhib ntxhib ntxhib ntxhib ntxhib ntxhib los mos, cov khoom muaj kuab lom thiab cov pa phem los ntawm cov kab mob. Mineral pollution yog muab faib ua xuab zeb hmoov av, av, ntxhia impurities, plua plav, yaj ntsev, acidic thiab alkaline pollution, thiab lwm yam. Organic teeb meem pollution yog muab faib ua coal particles, roj paug, metabolites ntawm biological lub neej, ntoo thiab lwm yam.
Cov khoom ntawm oxidation ntawm cov khoom; Cov kab mob ua paug feem ntau yog los ntawm cov pa phem ntawm cov hmoov pob zeb, cov hmoov av hmoov av, thiab lwm yam. Thaum lub sij hawm kev loj hlob, mining thiab kev thauj mus los, uas ua rau cov dej tshwm grey thiab dub, turbid, thiab cov roj stains raug tshem tawm ntawm cov dej saum npoo av, thaum emitting ib tug kab ntawm fishy tsw. thiab tsw ntxhiab ntawm cov kab mob uas muaj sia nyob.
Cov khoom ntawm thee ntxuav cov dej khib nyiab
Coal ntxuav dej khib nyiab yog tsim los ntawm thawj coal slime, Secondary coal slime thiab dej. Coal washer wastewater muaj slime particles (coarse slime particles {{{0}}}.5~1mm, fine slime particles 0~0.5mm), minerals, clay particles, etc. Coal washing wastewater) feem ntau muaj cov Cov yam ntxwv ntawm qhov siab ntawm SS, CODcr, thiab BOD5. Yog li ntawd, cov thee slime dej tsis tsuas yog muaj cov khoom ntawm kev ncua, tab sis kuj feem ntau muaj cov khoom ntawm colloid; nplua coal slime particles, av nplaum hais, thiab lwm yam yog heev me me thiab tsis yooj yim rau khom. Cov khoom no txiav txim siab tias hom dej khib nyiab no muaj kuab heev thiab nyuaj rau kev kho.
Coal washing wastewater kho tshuab
Thaum kho cov thee ntxuav cov dej khib nyiab, qee qhov coagulant yuav tsum tau ntxiv rau cov dej khib nyiab, uas tuaj yeem txo nws cov peev xwm, rhuav tshem qhov ruaj khov ntawm colloidal hais hauv dej khib nyiab, thiab yog li cais cov av thiab dej. Raws li qhov xwm txheej ntawm cov thee ntxuav cov dej khib nyiab, koj tuaj yeem xaiv siv cov tshuaj inorganic, tab sis txoj kab uas hla ntawm cov khoom tsim yog me me, qhov kev daws teeb meem kuj qeeb heev, thiab nws qhov kev ua tau zoo pom kuj tsis zoo, uas ntxiv rau qee qhov kev ntsuas ntawm nyuaj rau kev kho lub cev qhuav dej ntxiv thiab yuav tsum tau flocculation. tus neeg sawv cev.
Cov tshuaj muaj pes tsawg leeg ntawm txiv qaub thiab carbide slag yog qhov zoo ib yam, ob qho tib si yog calcium oxide, tab sis carbide slag yog cov khoom pov tseg, nws cov nqi qis heev, thiab cov mines dav dav muaj cov khoom siv pov tseg, yog li carbide slag yog qhov tsim nyog tshaj plaws. raws li ib tug coagulant. Carbide slag tuaj yeem ua rau muaj kev puas tsuaj rau kev ruaj ntseg ntawm cov thee ntxuav cov dej khib nyiab thiab tuaj yeem ua rau cov coal slime hais rau agglomerate thiab nyob. Txawm li cas los xij, vim tias nws qhov kev daws teeb meem qeeb qeeb, flocculants yuav tsum tau ntxiv los ua kom nrawm nrawm, uas tuaj yeem hloov qhov kev daws teeb meem.
Non-ionic PAM yog qhov tsim nyog dua li flocculant. Qhov sib ntxiv ntawm carbide slag thiab PAM, nrog rau lub sijhawm nplawm thiab nrawm muaj feem cuam tshuam rau sedimentation. Kev siv cov carbide slag ua ke nrog PAM los kho cov thee ntxuav cov dej khib nyiab tuaj yeem tsis tsuas yog cais li 40% ntawm cov dej huv, tab sis kuj tseem COD concentration thiab SS concentration hauv cov dej huv yog qis dua li cov thee mine coal ntxuav cov dej khib nyiab thiab cov qauv siv rov qab. Nyob rau tib lub sijhawm, kev pom kev ua haujlwm ntawm flocs kuj tuaj yeem txhim kho tau zoo, yog li tsim kom muaj kev pom zoo rau lub cev qhuav dej ntxiv ntawm cov coal slime.
Cov dej huv sib cais tuaj yeem rov qab siv tau rau cov thee ntxuav, uas tsis tsuas yog txuag dej, tab sis kuj tseem txuag cov nqi dej rau cov lag luam. Ntxiv mus, cov lag luam tuaj yeem rov ua dua cov coal slime txhua xyoo thiab tau txais txiaj ntsig kev lag luam ntau. Los ntawm kev kho cov thee ntxuav cov dej khib nyiab, lawv tuaj yeem zam cov nqi siab. Cov txiaj ntsig kev lag luam tau txais los ntawm tus nqi dej phwj tuaj yeem tsis tsuas yog cuam tshuam cov nqi khiav lag luam ntawm kev kho cov dej khib nyiab, tab sis kuj tau txais txiaj ntsig nyiaj txiag ntxiv.