Qhov twg Qhov Ob -Pass RO + EDI Tsheb ciav hlau zaum thiab nws khiav li cas

1. Tag nrho UPW Tsheb ciav hlau zoo li cas

1.1 Stepwise Purification los ntawm Raw rau Ultrapure

Ib tug raug ultrapure- cov kab dej embodies "stepwise purification": cov dej nyoos thawj zaug dhau los ntawm cov xov xwm multimedia, activated carbon, softening, los yog UF kom strips pom particles, chlorine, organics, thiab hardness; tom qab ntawd thawj zaug - dhau RO ua cov desalination ntau; thawj-dhau permeate mus los ntawm kev kho interstage mus rau hauv qhov thib ob- dhau RO rau kev sib sib zog nqus polishing; thib ob-pass permeate yog cov khoom noj EDI raug cai; Tom qab EDI los polishing sib xyaw txaj, UV, thiab lub davhlau ya nyob twg cov ntxaij lim dej uas thawb kev tiv thaiv mus rau qib siab. Txhua theem nce ib kauj ruam rau saum ib qho dhau los es tsis yog ib theem ua txhua yam. Kev nkag siab qhov no yog qhov yuav tsum tau ua ua ntej kom nkag siab txog tus nqi ntawm ob qhov kev hla.

1.2 Qhov thib ob -Pass RO zaum ntawm cov saw

Hauv ibMuab ob npaug rau RO System Rau EDI Pretreatment, qhov thib ob - dhau RO yog kaw ncaj qha rau pem hauv ntej ntawm EDI raws li qhov kawg "nyuaj" desalination ua ntej EDI pub. Kev kho ua ntej thiab ua ntej - dhau RO ua ntej tig dej los ntawm "qhuav" mus rau "fais fab"; qhov thib ob hla dhau "hloov ncaj ncees" rau hauv "ntxuav txaus rau EDI txais." Txoj hauj lwm no ua rau nws ob qho tib si desalination ntaus ntawv thiab lub fuse rau EDI - thaum nws ntog, cov cuab yeej kim tshaj plaws tau txais qhov txiaj ntsig ncaj qha.

Daim duab:Ob chav- hla RO + EDI tsheb ciav hlau: thib 2- hla RO zaum pem hauv ntej ntawm EDI ua tus neeg saib xyuas

2. Vim li cas qhov thib ob -Pass RO Yuav tsum zaum pem hauv ntej ntawm EDI

2.1 Tiv thaiv EDI's Resin thiab Stack

EDI lub neej thiab kev ruaj ntseg nyob ntawm yuav luag tag nrho ntawm kev ntxuav nws cov khoom noj li cas. Los ntawm nias qhov seem ntsev, silica, boron, thiab feem ntau CO₂ los ntawm thawj zaug - dhau permeate mus rau ib puag ncig ntxiv, qhov thib ob dhau los ua phab ntsa tsis nyob rau pem hauv ntej ntawm EDI. Yog tsis muaj phab ntsa ntawd, cov nqaij nyoos- dej hloov pauv ncaj qha mus rau EDI, yuam cov resin thiab pawg ua haujlwm hauv cov khoom noj tsis zoo thiab hnub nyoog ntxov ntxov. Tus nqi ntawm "phab ntsa" no tsuas yog pom nyob rau hauv peb thiab tsib xyoo ntawm kev siv module.

2.2 Khaws "Fluctuation" deb ntawm Polisher

Cov dej nyoos tsis tas yuav tas mus li: lub caij nyoog, kev nyab xeeb, thiab cov dej ntws tawm tag nrho cov dej tsis zoo. Vim tias nws cov khoom noj tau huv lawm, qhov thib ob - dhau RO ua rau muaj kev hloov pauv hloov tau zoo dua li thawj zaug dhau los, ua kom cov kev hloov pauv ua ntej xa dej mus rau EDI. Nyob rau hauv lwm yam lus, qhov thib ob pass tsis tsuas yog desalts tab sis kuj ua raws li ib tug voltage stabilizer, cia tus mos mos polisher ib txwm haus roughly tib cov dej. Rau UPW qhov twg "kev hloov pauv yog qhov pheej hmoo," tus stabilizer tus nqi rivals desalination nws tus kheej.

2.3 Yog vim li cas Interstage Tank nruab nrab ntawm ob kis teeb meem

Hauv ntau ob - dhau kev teeb tsa ib lub tank interstage zaum ntawm thawj -pass permeate thiab thib ob- kis pub. Nws lub luag haujlwm tsis yog tsuas yog ntws buffering xwb tab sis kuj tseem muab cov kev sib txuas sib txuas, degassing, thiab pib / nres ntawm txhua chav dhau los ua haujlwm. Yog tsis muaj nws, ob qhov kev hla yuav tsum khiav nruj me ntsis hauv sync, thiab txhua qhov pib / nres ntawm ib qho cuam tshuam rau lwm qhov. Nrog nws, lub kaw lus tuaj yeem "thawj dhau los ua kom tsis tu ncua, qhov thib ob noj ntawm qhov xav tau," nce kev ua haujlwm yooj yim. Rau qhov ruaj khov me me, lub tank - tsawg dua kev sib txuas ncaj qha kuj tseem ua tau - tab sis qhov ntawd xav tau tus kws ua haujlwm ruaj khov ntawm lub luag haujlwm.

3. Ob lub tswv yim ntawm Interstage

3.1 pH Lifting: Tig CO₂ thiab Ions tsis muaj zog rau hauv "Cov ntawv tsis lees paub"

Qhov no yog kauj ruam tseem ceeb tshaj plaws hauv ibMuab ob npaug rau RO System Rau EDI Pretreatment. Ua ntej thawj-pass permeate nkag mus rau qhov thib ob, caustic nqa pH mus rau qhov tsis muaj zog -alkaline ntau: yaj CO₂ ua bicarbonate (them, tsis lees paub); silica thiab boron hloov ntawm nruab nrab molecules rau ions them (tseem tsis lees paub). Cov kauj ruam no yog ua tsis tau rau thawj zaug - dhau RO vim raw- dej hardness yuav ntsuas lub sijhawm pH nce; tab sis qhov thib ob -pass pub tau huv lawm, yog li nqa pH tsis muaj kev pheej hmoo loj. Ib qho me me me me taw qhia ua kom zoo dua qhov thib ob -pass desalting peev xwm - tus nqi siab tshaj{10}} kev ua tau zoo hloov pauv hauv tag nrho cov kab ke.

3.2 Degassing: Lub cev hloov pauv rau Stripping CO₂

Tsis yog txhua qhov project xav tau caustic. Lub tshuab nqus tsev contactor los yog lub tshuab nqus tsev degasser ntawm qhov kev hla tuaj yeem ua rau lub cev nqus cov CO₂, zoo li txiav qhov thib ob - dhau cov kua qaub. Txoj kev no txuag tau koob tshuaj tab sis ntxiv ib chav thiab ua haujlwm ntau dua -sensitive - yog tias degasser efficiency poob, CO₂ ntsiag to rov qab. Txawm hais tias yuav nqa pH lossis degas, ob leeg daws tib yam teeb meem - khaws CO₂ tawm ntawm EDI - ib qho tshuaj, ib lub cev.

3.3 Yuav Ua Li Cas Xaiv Ntawm Lawv

Yog tias raw- dej silica thiab boron siab, pH nqa yuav luag, vim tias tsuas yog daim ntawv ionized tsis lees paub lawv huv si; Yog hais tias qhov project yog rhiab heev rau dosing raws, los yog CO₂ yog tus yeeb ncuab tseem ceeb thaum silica / boron tsawg, degassing haum zoo dua; rau cov dej nruj tshaj plaws, khiav ob qho tib si tsis tshua muaj. Lub hauv paus rau kev xaiv ib txwm los ntawm cov dej qhia, tsis yog los ntawm "uas suab siab heev."

Daim duab: Interstage chemistry: pH nqa converts CO2 / silica / boron rau hauv cov ntaub ntawv them tsis tau; degassing ua lwm txoj

4. Lub logic ntawm kev rov qab los thiab kev xav rov qab los

4.1 High Recovery nyob rau qhov thib ob Pass

Qhov thib ob -pass pub yog qis- ntsev, qis- fouling dej huv, yog li nws tuaj yeem khiav ntawm qhov rov qab siab yam tsis muaj kev txhawj xeeb txog kev scaling lossis fouling. Qhov no yog qhov ntxeev ntawm thawj qhov kev hla, uas ntsib qhov siab - ntsev siab - fouling dej nyoos thiab yuav tsum muaj kev saib xyuas ntawm kev rov qab los; qhov thib ob dhau mus ntsib "twb- dej pretreated" thiab tuaj yeem khiav ntawm kev rov zoo dua. Kev rov qab siab ncaj qha txhais tau tias tsis tshua muaj siab tawm thiab txhais tau tias qhov thib ob "re-sweep" yuav luag tsis muaj dej.

4.2 Nco ntsoov rov qab mus rau Thawj Hla, Me Me Tag Nrho

Txawm hais tias me ntsis saltier, qhov thib ob -pass concentrate yog tseem huv heev thiab tuaj yeem rov qab mus rau thawj -pass pub. Yog li qhov thib ob pass "dej khib nyiab" tsis yog pov tseg tab sis re- khiav mus rau pem hauv ntej kawg. Qhov tseeb dej poob ntawm tag nrho ob npaug - dhau kev teeb tsa yog deb me dua "ob theem txhua qhov tso tawm" suab, uas kuj yog vim li cas kev lag luam nws tuav nws hauv av hauv UPW kab. Tsim kom muaj kev zoo siab rov qab los feem ntau pheej yig dua li kev sib tw ib zaug - dhau qhov rov qab zoo.

5. Instrumental, Interlocks, thiab CIP

5.1 Yuav Ua Li Cas Saib Xyuas Online

Hauv ib thib ob - dhau RO + EDI system, conductivity, pH, ntws, sib txawv siab, thiab kub yog yuav tsum tau. Thib ob -pass permeate conductivity yog qhov tseem ceeb heev - nws yog qhov tiag -lub sij hawm lub rooj txiav txim "yog EDI pub tsim nyog." Ntau lub tshuab tso lub ntsuas hluav taws xob hauv online thiab nws pib-kev hloov pauv valve ua ntej thib ob- kis permeate mus rau EDI: ib zaug conductivity tshaj qhov pib, permeate pib- hloov mus rau ntws los yog rov ua dua, tsis txhob pub EDI. Yooj yim raws li nws zoo nkaus li, qhov kev sib cuam tshuam no yog kab kawg tiv thaiv EDI module kim, thiab cov khoom tsim nyog yuav tsum tau sim tiag tiag ntawm kev lees paub.

5.2 Lub Rhythm ntawm CIP thiab Kev huv huv

Vim tias nws cov zaub mov huv si, qhov thib ob - dhau RO's CIP zaus feem ntau yog qis dua thawj qhov kev hla dhau, tab sis nws tsis txhais tau tias "huv-dawb." Thaum flux poob, qhov sib txawv siab nce, los yog conductivity drifts, acid los yog caustic tu yuav tsum tshwm sim. Rau cov qib huv huv xws li cov tshuaj, cov khoom kub kub ib ntus - dej los yog tshuaj tua kab mob yogkuj yuav tsum tau. Qhov kev nkag siab ntawm kev saib xyuas lub suab txiav txim siab seb lub kaw lus yuav kav li kaum xyoo lossis peb - ntau qhov kev laus ntxov ntxov rov qab mus rau "zoo li zoo, yog li peb ncua kev tu."

6. Module Form thiab Automation

6.1 Skid-Mounting thiab Compact Layout

Niaj hnub ob - dhau RO + EDI feem ntau yog skid- mounted: twj tso kua mis, nkoj, twj, thiab tswj vaj huam sib luag yog tag nrho ua ntej- sib dhos thiab ua ntej-piped, npaj khiav los ntawm kev sib txuas fais fab thiab dej ntawm qhov chaw. Vim tias nws yog me me, qhov thib ob - dhau RO feem ntau sib koom ib qho kev sib tw nrog thawj qhov hla thiab EDI, qhwv qhov "interstage" nrog cov kav dej thiab li qub. Qhov kev sib cog lus no txuag kev hneev taw thiab txo qis ntawm - qhov chaw piping yuam kev, tig ntau "field engineering" mus rau "fais fab engineering."

6.2 Automation Drives "Tib neeg- yuam kev" rau qhov tsawg kawg nkaus

PLC + HMI logic tuav cov twj tso kua mis pib / nres, kev sib koom ua ke valve, qeeb VFD ramps, thiab tsis siv neeg qis -conductivity permeate flush ntawm kev kaw. Embedding lub logic no rau hauv tus maub los yog qhov kev ntseeg siab ntau dua li kev cia siab rau cov neeg siv kev paub dhau los. Rau UPW qhov twg "kev kaw yog qhov poob lawm," automation tsis yog ib qho ntxiv - nws yog qhov yuav tsum tau ua. Lub caij no, kev saib xyuas tej thaj chaw deb cia cov neeg ua haujlwm tau txais kev ceeb toom ntawm kev mus ncig ua si thawj zaug, tsis tas zaum hauv chav tshuab.

7. Feem ntau ua yuam kev

7.1 Kho Daim Ntawv Pov Thawj Thib Ob li "Kev Pov Hwm" thiab Tom Qab Tsis Pom Zoo

Qhov yuam kev ntau tshaj plaws yog txhim kho ob qhov dhau los thiab xav tias qhov pub noj tam sim no tau lees paub zoo, tom qab ntawd so kom txaus rau thawj zaug -pass pretreatment thiab interstage dosing. Qhov thib ob yog tus neeg saib xyuas lub rooj vag, tsis yog qhov xav tau - yog cov nyob pem hauv ntej tsis saib xyuas lawv lub luag haujlwm, nws yuav raug rub thiab. Kev ntsuas qhov thib ob -pass conductivity meter tsis tu ncua thiab saib cov pH hauv nruab nrab yog qhov siab tshaj - tus nqi txhua hnub.

7.2 Tsis quav ntsej qhov ruaj khov ntawm Interstage Dosing

Lub pH- nqa lub twj tso kua mis, ib zaug tsis ruaj khov, ua rau qhov thib ob -dhau kev muaj peev xwm rau cov menyuam-coaster. Ntau qhov chaw nrog "zoo ib pliag, tsis zoo tom ntej" EDI pub kab rov qab mus rau qhov tsis ruaj khov interstage dosing, tsis yog qhov thib ob - dhau daim nyias nyias. Ua kom lub koob tshuaj tsis tu ncua thiab ceeb toom yog qhov pheej yig dua li kev hloov cov membranes tom qab.

8. Peb yam yuav tsum tau daws ua ntej kev teeb tsa thaj av

Tom qab txiav txim siab "peb xav tau ib qho kev hla ob zaug," peb yam tseem mus ncig ua si. Ua ntej, interstage dosing reliability - pH - nqa lub twj tso kua mis yuav tsum rov ua dua thiab ceeb toom, qhov zoo tshaj plaws nrog kaw - voj pH tswj, tsis kuaj los ntawm tus neeg ntawm lub sijhawm. Thib ob, calibration ntawm qhov thib ob -pass conductivity meter - nws yog EDI pub rooj vag; yog hais tias nws drifts, tawm - ntawm - spec dej nkag mus rau hauv EDI, yog li lub voj voog calibration belongs rau hauv phau ntawv saib xyuas. Qhov thib peb, qhov concentrate- rov qab piping - rov taw tes, valve, thiab rov qab - siab yuav tsum tau tsim kom zoo, los yog qhov thib ob -pass concentrate yog nkim los yog shocks thawj zaug. Cov no yog tag nrho cov "kev sib txuas me me, qhov tshwm sim loj" cov khoom uas yuav tsum tau muab ntsia rau ntawm theem teeb duab.

9. Kaw: Dej Ntsuas Ua Ntej → Dej Qib Tom ntej → Them Rov Qab Kawg

Rov qab mus rau cov txheej txheem: tsim ib qhov Ob Chav Pass RO System Rau EDI Pretreatment, tsis txhob kos qhov thib ob dhau thawj.Ua qhov dej sib npaug ua ntej- raw- dej ntim, hloov pauv, mloog zoo;ces muab qib dej zoo- tawm tsam EDI lub qhov rais kam rau ua, tau qhab nia ua ntej - kis permeate yam khoom los ntawm cov khoom kom paub meej tias seb qhov thib ob dhau los thiab qhov cuam tshuam yuav tsum tsom CO₂, silica, lossis boron;Thaum kawg suav lub sijhawm them rov qab- hnyav qhov thib ob lub twj tso kua mis, daim nyias nyias, noj, thiab lub zog tawm tsam EDI lub neej thiab txo qhov kev kaw nws txuag. Taihe Environmental Protection nyob rau hauv skid - kev sib koom ua ke ob - dhau RO nrog EDI pretreatment, ua raws li cov kab no kom fuse "desalination - polishing - stabilization" rau hauv ib qho kev txhim khu kev qha, cia UPW kab ob qho tib si ntaus spec thiab ua haujlwm ntev xyoo.