Kev siv cov kev ua haujlwm siab rov qab osmosis membrane cov ntsiab lus hauv kev kho dej phwj tuaj

RO membrane sib cais tshuab

RO membrane sib cais tshuab siv lub siab zoo li qub sib txawv thoob plaws hauv daim nyias nyias raws li kev tsav tsheb. Cov molecules me me, xws li dej molecules, kov yeej lub siab osmotic kom dhau los ntawm RO membrane, yog li cais lawv ntawm impurities. Kev khiav hauj lwm siab yog feem ntau ntawm 1.5 thiab 10.5 MPa, thiab lub kaw lus tuaj yeem khaws cov khoom me me ntawm 1 txog 10A.

Hauv kev kho dej, RO, raws li cov cuab yeej tseem ceeb, tuaj yeem tshem tawm ntau dua 97% ntawm cov teeb meem tsis muaj kuab lom, 99% ntawm cov organic teeb meem nrog cov txheeb ze molecular hnyav ntawm 300 lossis siab dua, ntau dua 99% ntawm ntau yam nrog rau cov kab mob, thiab 95% ntawm SiO2 hauv dej.

Qhov loj tshaj plaws hauv cheeb tsam daim ntawv thov rau thim rov qab osmosis daim nyias nyias tseem loj-loj boiler pub dej, ua raws los ntawm ntau yam dej ntshiab thiab dej haus kev lag luam. Membrane daim ntaub ntawv kuj tau mus txog ib tug loj scale nyob rau hauv lub electronics, semiconductor, kws, kho mob, zaub mov, dej haus, cawv, tshuaj, ib puag ncig tiv thaiv, metallurgy, thiab textile industries. Cov ntaub ntawv muaj peev xwm yav tom ntej suav nrog kev kho dej khib nyiab rau cov chaw tsim hluav taws xob ua dej txias, dej hiav txwv loj desalination, dej khib nyiab desalination, thiab loj loj hauv nroog thiab kev kho dej khib nyiab.

Kev siv RO membrane hauv kev kho dej phwj tuaj

1Daim ntawv thov nyob rau hauv high-ntsev dej khib nyiab

(1) Kev kho mob ntawm cov dej khib nyiab siab, uas sawv cev los ntawm kuv cov dej, yog qhov muaj kuab heev, tshwj xeeb tshaj yog cov dej hauv av tawm, nrog cov ntsev nruab nrab ntawm ntau dua 1000 mg / L. Cov organic Cheebtsam ntawm SS uas muaj ntau ntawm Ca2 + Mg2 + K +, Cl-, SO42-, HCO3 thiab HCO3- tsawg dua 1.5 mg / L. Rau cov chaw mining uas muaj dej tsis txaus, kev siv thev naus laus zis rov qab osmosis rau kev sib sib zog nqus ntawm kev tsim khoom thiab dej hauv tsev tau nthuav dav.

Siv cov dej ntxhia ua tus neeg saib xyuas ua ntej, flocculation, sedimentation, thiab ceev pom tau ntxiv kom tshem tawm feem ntau ntawm SSS hauv dej, ua rau rov qab osmosis inlet turbidity tsawg dua 1 NTU. Tom qab rov qab osmosis kev kho mob, qhov kev tshem tawm turbidity tawm mus txog 100%, nrog rau tus nqi desalination ntawm 96%.

(2) Kev kho dej khib nyiab metallurgical

Kev lag luam steel, kev lag luam-nrhiav, dej-intensive thiab kev lag luam muaj kuab heev, suav txog 14% ntawm Tuam Tshoj cov dej siv tag nrho. Kev lag luam steel dej khib nyiab yog dav siv hauv kev lag luam metallurgical. Cov dej khib nyiab muaj qhov sib xyaw ua ke thiab hloov pauv dav hauv ntau qhov tsis sib xws, tshwj xeeb yog qib siab ntawm Ca2+, Mg2+, Fe2+, Mn2+, SO42-, F, thiab SiO2. Kev ua tsis tiav ua ntej tshem tawm cov khoom siv hlau siab uas muaj nyob rau ntawm qhov rov qab osmosis membrane tuaj yeem ua rau muaj kuab paug tsis zoo.

Rau cov dej khib nyiab los ntawm cov nroj tsuag hlau uas tau txais kev kho mob biochemical thib ob, aeration yog thawj zaug hauv lub tank aeration kom oxidize Fe2 + rau Fe3 +. Ib txhij, NaClO tau ntxiv los txhim kho Fe2 + oxidation muaj peev xwm thiab cov kab mob bactericidal. Cov kua txiv qaub yog ntxiv los kho cov pH, ua raws li flocculation nrog PAM thiab PAC. Sedimentation, ceev pom, thiab activated carbon adsorption yog siv los tshem tawm cov organic teeb meem, residual chlorine, thiab hnyav hlau ions. Tom qab UF kev kho mob, cov kua dej yog kho nrog tus neeg sawv cev txo qis. Scale inhibitors thiab acid nkag mus rau RO system.

2 Daim ntawv thov nyob rau hauv kev kho ntawm refractory organic wastewater

Kev luam ntawv thiab dyeing cov dej khib nyiab thiab petrochemical kev kho dej khib nyiab, luam ntawv thiab dyeing cov dej khib nyiab, ntxiv rau ntau cov dyes, slurries, inorganic ntsev, acids thiab alkalis, muaj cov yam ntxwv txog li 4000 npaug ntawm cov xim, cov dej loj, cov ntsiab lus ntawm cov kuab paug organic, ntau cov dej tsis zoo, tsis zoo biodegradability ntawm cov av sib sib zog nqus, thiab lwm yam. landfills, thiab cov pa phem tsuas yog los ntawm microbial decomposition ntawm cov khib nyiab thiab nag lossis daus leaching. Cov dej zoo yog qhov nyuaj, thiab COD ntau dua li cov dej phwj hauv nroog. Tsis tas li ntawd, cov leachate kuj muaj ntau yam hlau ions, xws li Fe2+, Cd2+, Cr3+, Cu2+, Zn2+, thiab Fe2+ concentration thaum lub sij hawm fermentation txheej txheem.

Txawm hais tias A / O ob-theem biochemical kev kho cov txheej txheem tau siv dav rau cov organic teeb meem degradation thiab denitrification hauv cov dej khib nyiab pov tseg, cov dej ntws tawm tsis ruaj khov. Yog li ntawd, raws li cov neeg kho tshuab pom, kev siv ultrafiltration membranes thiab A / O los tsim MBR txheej txheem tau txhim kho tus nqi tshem tawm cov organic teeb meem hauv cov khib nyiab pov tseg.

Cov effluent, tom qab sludge sib cais los ntawm ultrafiltration membranes, nkag mus rau ib tug nanofiltration (NFN) system. NF tuaj yeem cais cov organic teeb meem zoo nrog qhov hnyav molecular ntawm 200m txog 2000m thiab tseem tuaj yeem siv los cais qee cov khoom muaj txiaj ntsig zoo los ntawm MBR-ua dej. Kev tshawb fawb tau ua rau cov khoom ntawm cov hlau ions thiab MBR + NF + RO peb-txheej Membrane Composite kev kho mob. Cov txiaj ntsig tau pom tias cov txheej txheem ua haujlwm tau zoo, thiab cov dej ntws zoo ua tau raws li cov qauv tswj kev ua qias tuaj rau hauv nroog cov khib nyiab pov tseg.

Thaum lub sijhawm ua haujlwm, yog tias NF effluent ua tau raws li qhov yuav tsum tau tso tawm, nws tuaj yeem tso tawm ncaj qha. Txwv tsis pub, nws tuaj yeem kho ntxiv siv RO system hauv qab no. Kev tshawb fawb ntawm Ar/O-MBR + NF + RO txheej txheem rau kev kho cov khib nyiab pov tseg tau pom tias qhov sib ntxiv ntawm cov pa roj carbon activated rau A / O reactor tsis tsuas yog txhim kho kev tshem tawm cov organic teeb meem thiab cov hlau hnyav, tab sis kuj txo cov fouling membrane.

3 Daim ntawv thov hauv kev kho kom zoo dua qub

Tuam Tshoj kuj tau tsim cov nroj tsuag dej loj loj hauv Beijing, Tianjin, Hebei, Shandong thiab lwm qhov chaw. Ntawm lawv, ob peb lub chaw siv dej loj loj siv cov txheej txheem "UF (MF) + RO" ob chav txheej txheem los kho ob hom dej phwj hauv nroog rau hauv cov dej nyoos, ua cov dej zoo dua qub, uas yog siv los ua ib feem ntawm cov dej rau boiler thermal fais fab nroj tsuag thiab lwm qhov yog siv los ua cov dej ntws hauv toj roob hauv pes thiab lwm yam dej hauv tsev.

Lub chaw kho dej khib nyiab hauv zos siv MBR ua ke nrog rov qab osmosis los kho cov dej khib nyiab hauv nroog kom rov siv dua. Cov dej tau ua tiav TOC qib

Txhawm rau kom ua tiav cov txiaj ntsig zoo ntawm kev rov qab osmosis thev naus laus zis, txo qis membrane fouling, thiab txo cov nqi kho dej, peb lub tuam txhab tau tsim cov txheej txheem sib xyaw ua ke kom haum rau cov yam ntxwv dej zoo. Cov txheej txheem kev kho dej ib txwm siv, xws li coagulation thiab sedimentation, high-concentration, thiab high-efficiency filtration, feem ntau yog siv los tshem tawm SS. NaClO, txiv qaub kua mis, thiab manganese xuab zeb lim yog siv los txo RO, manganese ntsev, calcium ntsev, thiab silica ntsev nyob rau hauv lub influent Sargassum aeration thiab oxidation system. O3 oxidation yog siv los kho recalcitrant A / O organic teeb meem. MBR, UF, thiab NF yog siv los khaws cov SS zoo thiab cov organic molecules me me. High-valent ions tau ua ke nrog UF + RO lossis MBR + RO dual-membrane systems, lossis txawm tias MBR + NF + RO triple-membrane systems, ua kom ruaj khov ua haujlwm thiab ua kom muaj kev kho RO ntawm recalcitrant organic wastewater.

Lub tuam txhab cov lus pom zoo

"HID Membrane" tsom mus rau kev sib cais ntawm cov khoom siv membrane thiab kev tsim cov khoom siv membrane, muab cov neeg siv khoom nrog kev sib cais ua kua, cov kev daws teeb meem ntawm cov membrane thiab ua tiav cov txheej txheem ntawm cov khoom siv los ntawm cov khoom siv membrane, kev tshawb fawb thiab kev tsim kho, kev pab tswv yim, kev sib koom ua ke rau kev pabcuam kev sib koom ua ke.

Lub hom phiaj tau cog lus rau kev siv tshuab dej khib nyiab thiab cov khoom siv membrane rau ntau tshaj 16 xyoo. Nws tau pioneered lub ntiaj teb thawj nyob rau hauv ntau daim ntawv thov teb rov qab osmosis daim nyias nyias, sau nplua nuj daim ntawv thov kev paub, thiab tau txais ntau invention patents thiab utility qauv patents nyob rau hauv muaj feem xyuam, sau ntau qhov khoob hauv tsev thiab txawv teb chaws, thiab muaj lub koob npe nrov hauv kev lag luam.