Tubular Membrane Core

Cov yam ntxwv ntawm desulfurization cov dej khib nyiab hauv cov fais fab nroj tsuag:

Feem ntau cov khoom siv desulfurization hauv cov chaw tsim hluav taws xob siv cov roj limestone-gypsum ntub dej desulfurization txheej txheem. Cov txheej txheem tsuas yog muaj limestone slurry npaj system, gypsum lub cev qhuav dej, thiab desulfurization wastewater kho system. Cov dej nyob rau hauv slurry ntawm lub desulfurization ntaus ntawv yuav enriched nrog hnyav hlau ntsiab thiab Cl- thaum lub sij hawm tas mus li txoj kev ncig, uas yuav ua rau kom cov corrosion ntawm cov khoom desulfurization ntawm ib sab thiab cuam tshuam rau qhov zoo ntawm gypsum ntawm qhov tod tes. Cov dej khib nyiab yuav tsum tau muab pov tseg rau lub sijhawm.

Fais fab nroj tsuag desulfurization wastewater kho txheej txheem khiav:

desulfurization khib nyiab → dej khib nyiab → dej khib nyiab → pH neutralization tank → sedimentation tank → flocculation tank → clarifier → qhov hluav taws xob tank → qhov hluav taws xob twj tso kua mis → txheem tso tawm.

Kev kho cov dej khib nyiab desulfurization muaj peb ntu: kev kho dej khib nyiab, kev siv tshuaj, thiab kev kho sludge. Kev kho cov dej khib nyiab feem ntau yog tsim los ntawm cov dej khib nyiab, lub tank triple, clarifiers, sludge twj, qhov hluav taws xob tso tsheb hlau luam, cov twj tso kua dej huv, kiv cua, lub cev qhuav dej thiab lwm yam khoom siv. Ntxiv rau qhov ntau ntawm Cl- thiab Mg2+, cov impurities hauv cov dej khib nyiab desulfurization kuj muaj xws li: fluoride, nitrite, thiab lwm yam; hnyav hlau ions, xws li: Cu2+, Hg2+, thiab lwm yam.; insoluble CaSO4 thiab nplua plua plav, thiab lwm yam. Yuav kom ua tau raws li cov qauv kev tso dej pov tseg, cov khoom siv kho dej khib nyiab yuav tsum tau ua.

Kev lag luam cov dej khib nyiab feem ntau yog los ntawm: cov dej khib nyiab ntau lawm los ntawm kev lag luam petrochemical, thee chemical kev lag luam, acid thiab alkali kev lag luam, chiv kev lag luam, kev lag luam yas, kev lag luam tshuaj, kev lag luam dye, kev lag luam roj hmab, thiab lwm yam.

Cov kev ntsuas tseem ceeb rau kev tiv thaiv thiab tswj cov dej khib nyiab tshuaj lom neeg yog: ua ntej, cov txheej txheem tsim khoom thiab cov khoom siv yuav tsum tau hloov kho kom txo tau cov pa phem, tiv thaiv cov dej khib nyiab pov tseg, thiab ua kom tiav kev siv thiab rov ua dua tshiab; qib ntawm kev kho cov dej khib nyiab uas yuav tsum tau muab tshem tawm yuav tsum raug xaiv raws li cov dej zoo thiab cov kev xav tau.

Kev kho thawj zaug feem ntau cais cov khib nyiab, colloids, cov roj ntab lossis cov roj hnyav hauv dej. Cov dej zoo thiab kev hloov kho dej kom muaj nuj nqis, kev ua kom muaj dej hauv ntuj, ntab thiab roj sib cais txoj kev tuaj yeem siv.

Cov kev kho mob thib ob feem ntau tshem tawm cov organic yaj thiab qee cov colloids uas tuaj yeem ua rau biodegraded, txo cov biochemical oxygen xav tau thiab qee cov tshuaj oxygen xav tau hauv cov dej khib nyiab, thiab feem ntau yog siv tshuaj lom neeg. Hauv cov dej khib nyiab tom qab kev kho mob lom neeg, tseem muaj ntau ntau ntawm COD, qee zaum muaj xim siab, tsis hnov ​​tsw, saj, lossis vim muaj cov qauv kev nyiam huv ntawm ib puag ncig, nws yog ib qho tsim nyog yuav tsum siv txoj kev kho tertiary rau kev ua kom huv ntxiv.

Kev kho tertiary feem ntau tshem tawm cov kuab paug organic thiab cov kuab tshuaj tsis muaj kuab lom uas nyuaj rau biodegrade hauv dej khib nyiab. Cov kev siv feem ntau suav nrog cov pa roj carbon activated adsorption thiab ozone oxidation, thiab ion txauv thiab membrane sib cais thev naus laus zis kuj tseem siv tau. Ntau yam kev lag luam cov dej khib nyiab tuaj yeem kho los ntawm ntau txoj hauv kev raws li cov dej sib txawv, cov dej ntim thiab cov kev xav tau ntawm qhov zoo ntawm cov dej khib nyiab kho.

Kev lag luam luam ntawv thiab dyeing siv dej ntau, feem ntau yog 100-200 tons ntawm dej ib tuj ntawm textiles. 80% -90% ntawm nws yog tawm raws li luam ntawv thiab dyeing dej khib nyiab. Feem ntau siv txoj kev kho mob suav nrog kev rov ua dua tshiab thiab kev kho mob tsis zoo.

Recycling: Cov dej khib nyiab tuaj yeem rov ua dua raws li cov yam ntxwv ntawm cov dej zoo, xws li kev hloov pauv ntawm cov tshuaj dawb thiab tshem tawm cov dej khib nyiab thiab dyeing thiab luam ntawv cov dej khib nyiab, cov qub tuaj yeem ntxuav los ntawm convection. Siv ib qho dej rau ntau lub hom phiaj los txo cov paug;

Alkali cawv rov qab feem ntau yog rov qab los ntawm evaporation. Yog hais tias tus nqi ntawm alkali cawv loj, nws tuaj yeem rov qab los ntawm peb qhov cuam tshuam evaporation. Yog hais tias tus nqi ntawm alkali cawv me me, nws tuaj yeem rov qab los ntawm cov yeeb yaj kiab evaporation;

Dye rov qab, xws li Shilin dye tuaj yeem acidified rau hauv cryptopamoic acid, uas yog nyob rau hauv daim ntawv ntawm colloidal hais. Ncua tseg rau hauv cov kua residual, nws yog recycled tom qab nag lossis daus thiab pom.

Kev kho mob tsis zoo tuaj yeem muab faib ua kev kho lub cev, kev kho tshuaj lom neeg thiab kev kho mob lom.

Txoj kev kho lub cev muaj xws li nag lossis daus thiab adsorption. Cov dej nag tsuas yog tshem tawm cov teeb meem tshem tawm hauv cov dej khib nyiab; adsorption feem ntau tshem tawm cov pa phem thiab decolorizes dej khib nyiab.

Txoj kev kho tshuaj muaj xws li neutralization, coagulation thiab oxidation. Neutralization yog kho tus nqi pH ntawm cov dej khib nyiab thiab txo cov xim ntawm cov dej khib nyiab; coagulation yog tshem tawm dispersed dyes thiab colloidal tshuaj nyob rau hauv cov dej khib nyiab; oxidation yog oxidize txo cov khoom hauv cov dej khib nyiab kom precipitate sulfide dyes thiab txo cov dyes.

Cov kev kho mob lom neeg muaj xws li qhib cov sludge, lom neeg teb nruas, lom neeg teb nruas thiab lom oxidation. Txhawm rau txhim kho cov dej ntws zoo thiab ua tau raws li cov qauv tso tawm lossis rov ua dua tshiab, nws yog qhov yuav tsum tau siv ntau txoj hauv kev rau kev kho mob ua ke.

Papermaking khib nyiab tsuas yog los ntawm ob txheej txheem ntawm pulping thiab papermaking hauv kev lag luam papermaking. Pulping yog cais cov fibers los ntawm cov khoom siv raw, ua cov pulp, thiab tom qab ntawd tshuaj dawb; papermaking yog dilute, puab, nias, thiab qhuav lub pulp los ua ntawv. Ob txoj kev tso tawm ntau cov dej khib nyiab.

Cov dej khib nyiab uas tsim los ntawm pulping yog cov pa phem tshaj plaws. Cov dej khib nyiab tawm thaum lub sij hawm ntxuav lub pulp yog xim av tsaus, hu ua dej dub. Qhov concentration ntawm cov pa phem hauv cov dej dub yog siab heev, nrog BOD siab li 5-40g/L, muaj ntau cov fiber ntau, inorganic ntsev thiab pigments. Cov dej khib nyiab tawm los ntawm cov txheej txheem bleaching kuj muaj ntau cov kua qaub thiab alkali. Cov dej khib nyiab tawm ntawm lub tshuab papermaking yog hu ua dej dawb, uas muaj cov fiber ntau thiab cov khoom ntim thiab cov roj hmab ntxiv thaum lub sijhawm tsim khoom.

Kev kho cov ntaub ntawv kev lag luam cov dej khib nyiab yuav tsum tsom rau kev txhim kho cov dej rov ua dua tshiab, txo cov dej siv thiab cov dej pov tseg, thiab tib lub sij hawm nquag tshawb nrhiav ntau yam kev ntseeg siab, kev lag luam thiab siv tag nrho cov kev kho mob rau cov khoom siv hauv cov dej khib nyiab. Piv txwv li, flotation tuaj yeem rov qab tau cov khoom fibrous hauv dej dawb nrog tus nqi rov qab txog li 95%, thiab cov dej ntshiab tuaj yeem rov qab siv dua; combustion tuaj yeem rov qab tau sodium hydroxide, sodium sulfide, sodium sulfate thiab lwm yam sodium ntsev ua ke nrog cov organic teeb meem hauv dej dub.

Neutralization kho tus nqi pH ntawm cov dej khib nyiab; coagulation sedimentation los yog flotation tuaj yeem tshem tawm cov khib nyiab hauv cov dej khib nyiab; chemical nag lossis daus tuaj yeem decolorize; Kev kho mob lom tuaj yeem tshem tawm BOD, uas yog qhov zoo dua rau kraft daim ntawv pov tseg; ntub oxidation kev kho mob ntawm sulfite pulp cov dej khib nyiab zoo dua. Tsis tas li ntawd, rov qab osmosis, ultrafiltration, electrodialysis thiab lwm yam kev kho mob kuj siv nyob rau hauv tsev thiab txawv teb chaws.

Cov dej khib nyiab muaj cov kua qaub, alkalis, ntsev, halogens, hydrocarbons, amines, nitro compounds thiab dyes thiab lawv cov intermediates, thiab qee qhov kuj muaj pyridine, cyanide, phenol, benzidine thiab hnyav hlau xws li mercury, cadmium thiab chromium. Cov dej khib nyiab no yog complex, lom, thiab nyuaj kho. Yog li ntawd, kev kho cov dej khib nyiab yuav tsum tau ua raws li cov yam ntxwv ntawm cov dej khib nyiab thiab nws cov kev cai tawm. Xaiv cov kev kho mob uas tsim nyog.

Piv txwv li: tshem tawm cov khoom impurities thiab inorganic teeb meem, coagulation thiab filtration yuav siv tau; tshem tawm cov organic teeb meem thiab cov tshuaj lom, tshuaj oxidation, cov txheej txheem lom neeg thiab rov qab osmosis feem ntau yog siv; decolorization feem ntau tuaj yeem siv cov txheej txheem uas muaj coagulation thiab adsorption, thiab cov hlau hnyav tuaj yeem raug tshem tawm los ntawm kev sib pauv ion.