Tus nqi ntawm cov dej pub rau RO?

PHIC Theem ntawm cov dej pub ua kom muaj qhov sib txawv rau koj lub kaw lus ro. Xav txog nws nyiam ywg dej tsob nroj: dhau acidic lossis dhau lawm alkaline, thiab tej yam pib mus tsis ncaj ncees lawm.

Cov dej hauv qab dej mus rau hauv koj lub tsev ro raws li peb yam tseem ceeb:Ro membraneKev ua lifespan, qhov kev cia siab, thiab txawm li cas los xij Mineral loj (hu ua "scaling") clogs li tej hauj lwm.

Taw rau lub ntsej muag qab zib6.5–8.5nyob rau hauv pH nplai. Mus sab nraud uas ntau -}}}}}}}}} ag acidic (hauv qab no) -}}}}} thiab koj tuaj yeem saib teeb meem. Koj daim nyias nyias yuav hnav cov nyiaj nrawm dua, lossis tso nyiaj ntxhia pob zeb tuaj yeem pib cov tub sab hauv qab li 3 txog 6 hlis. Tsis yog raws nraim yog tias koj xav tau koj tus ro kom tau chugging raws!

Tsib membrane Kev Ntseeg & Lifespan

RO membrane yog lub plawv ntawm lub system - nws yog lub lim lim uas tshem tawm cov paug tsis huv. Tab sis nws rhiab, zoo li lub tsho zoo nkauj uas tsis tuaj yeem ua rau cov tshuaj ntxuav hnyav.

• Kua qaub dhau (Ph<5): Acidic dej corrodes cov qauv me me ntawm daim nyias nyias (ua los ntawm cov khoom siv hu ua polyamide). Lub sijhawm dhau los, cov qhov me me daim ntawv, txo cov lus pom zoo. Cov kev tshawb fawb tau pom tias yog tias cov yuav tsis tsawg, ntsev tsis lees txais yuav poob los ntawm20% nyob rau hauv tsuas yog rau lub hlis.
• Too alkaline (pH >9): Cov dej alkaline tawg cia daim nyias nyias "cov kua nplaum," tsis muaj zog rau nws cov qauv thiab ua rau cov membrane noj.

Ntsev

Puas yog xav paub vim li cas koj lub ro dej saj "huv"? Qhov ntawd yog cov membrane tsis kam lees cov ntsev (zoo li calcium lossis magnesium). Tab sis ph tuaj ib txoj sia hauv cov txheej txheem ntawd.

• Qab zib spac (pH 7-8-8):Qhov no yog thaum koj daim nyias nyias muaj nyob hauv nws qhov chaw zoo siab, tsis lees txais99.5% + ntawm ntsev.
• Heev pH (ph<4 or >10):Tus membrane tau txais "tub nkeeg". Nyob rau theem no, Ntsev muaj kev cia siab poob rau90–95%(Cov ntaub ntawv los ntawm dow filmtec, ib lub npe saum toj kawg nkaus). Qhov ntawd txhais tau tias ntau cov minerals plam mus, thiab koj cov dej yuav pib sajing "tawm" lossis tawm ntawm cov tsom iav.

DOCKING & Corrosion txaus ntshai

P Tsis cia li ua phem rau cov membrane - nws tuaj yeem ua rau lwm qhov ntawm koj lub cev, ib yam nkaus.

• High pH (>8.5):Qhov no yog scaling tus nyiam tog neeg nyiam. Thaum dej yog alkaline dhau, cov zaub mov zoo li calcium carbonate pib ua ke, ua kev tso nyiaj ua ke (zoo li cov khoom dawb hauv koj lub lauj kaub). Nyob rau hauv PH 9, scalering tshwm sim10x sai duaTshaj li ntawm pH 7. Sijhawm rau lub sijhawm, cov ntxaij tso tawm clog thiab cov ntxaij lim dej, ua kom koj lub cev ua haujlwm nyuaj (thiab tus neeg txom nyem).
• Tsawg PH (<6):Tam sim no corrosion yuav siv sij hawm. Acidic dej noj kom deb ntawm cov hlau seem {}} kua, twj, kav dej, txawm tias ro chav tsev tus ncej. Stainless hlau tej zaum yuav tuav tau ib xyoos, tab sis tom qab 12-18 lub hlis? Koj tuaj yeem cuam tshuam nrog xeb rusty.

Tsis yog txhua lub tshuab ro yog tib - Thiab tsis yog lawv lub pha qab zib. Cia peb tawg cia "tsuas yog txoj cai" yog dab tsi tshwm sim yog tias koj nco lub cim.

Cov qib kwv yees los ntawm cov hom system

Yuav ua li cas yog tias PH yuav dhau / qis?

If pH is too high (>8.5):

Daim duab koj lub ro membrane insacle hauv ntxhia "crud" {- cov tshuaj txhuam hniav uas zoo li cov tshuaj txhuam hniav qhuav. Uas yog scalering, thiab nws yog xov xwm tsis zoo. Sij hawm dhau los, nws daig caj dab, yog li koj "lim" dej pib xaiv ntau dua. Tag nrho cov khib nyiab yaj kawg (TDS) hauv koj cov dej kho tau tuaj yeem dhia los ntawm50% lossis ntau dua{{0 {{}} zoo li mus los ntawm 10ppm rau 60ppm.

Yog tias pE tsawg dhau (<6.0):

Koj cov dej yuav pib saj ... hlau tawv. Yog vim hais tias yog acidic dej corrodes hlau seem hauv koj lub kaw lus (twj, kav dej, txawm tias daim nyias nyias). Koj kuj tseem yuav pom koj daim membrane hloov cov xim -} los ntawm nws li ib txwm tawm {} dawb rau ib qho nyiaj lossis xim av.

Tau txais cov teeb meem pH? Tsis txhob ntshai {{{}} muaj cov hauv kev yooj yim los kho nws. Nov yog 4 txoj kev uas ua tau haujlwm tiag, txawm koj xav tau lub tsev lossis tswj txoj kev teeb tsa loj.

Tshuaj Yeeb Tshuaj

• Rau siab pH (ib yam alkaline):Ntxiv ib qho me me ntsis ntawm cov kua qaub. Feem ntau cov neeg siv 10% hydrochloric acid (HCL) daws. Nws zoo li nyem cov txiv qaub txiv qaub rau hauv cov kas fes iab iab Piv txwv li: sib xyaw 1 liter ntawm HCL rau 100 cubic meters dej ntws tawm hauv dej pH los ntawm li 1 mus txog 9 mus rau 8).
• Rau qhov qes pH (dhau acidic):Ntxiv ib lub zog alkali, zoo li ib 5% sodium hydroxide (NAOH) kev daws teeb meem. Qhov no yog ib qho muaj nyob rau hauv cov chaw nrog super acidic dej, xws li cov chaw mining lossis kev muaj kev lag luam pov tseg. Ib me ntsis mus ntev ntev - Tsuas txaus txaus rau kev ua kom zoo li tsis tau ua kom dhau los yam tsis tau nyiaj ntau.

Pre6 - kev kho nrog pH buffers

• Calcium carbonate lim:Cov no yog qhov zoo rau cov dej acidic zoo. Lub lim dej xov xwm (tsoo limestone) maj mam dissolves, neutralizing acid li dej ntws los ntawm. Piv txwv li, yog tias koj cov dej tau muaj lub ph ntawm 5.5 (cov roj ntsha li acidic), cov lim no tuaj yeem tsoo nws mus rau qhov muaj kev nyab xeeb 7.0.
• COOL Stripping:Yog tias koj cov dej yog ib qho alkaline dhau (pH {9+), tshuab cua dub los ntawm nws (hu ua "stripping ntxiv cov pa roj hmab, uas ib txwm txo qis pH. Hauv cov nroj tsuag muaj cov neeg ua kom yuam kev no coj p ntawm 9.0 cia rau 7.5-tsis muaj tshuaj lom neeg xav tau!

Membrane xaiv rau cov tsiaj heev

Qee lub sij hawm koj tsis tuaj yeem hloov cov dej -} Yog li hloov pauv cov membrane.

Yog tias koj cov dej noj mis yog ib txwm nyob ntawm ntug (zoo li Ph 2 lossis 11), cov kua mis tsis tu ncua yuav ua tsis tau sai. Hloov chaw, xaivAcid -} tiv taus wharbranes(xws li, kot tfc - hr). Lawv raug nqi txog 20% ​​ntau upfront, tab sis nyob ntev ob zaug ntev li ntev hauv kev mob hnyav.

Tiag - lub sijhawm tshuaj & automation

• Nruab ib lub ph sensor:Cov cuab yeej zoo li Hach Ldd Preses khiav PE 24/7 thiab Beep yog tias qib siab mus dua 8.5 lossis qis dua 6.5. Nws zoo li lub tshuab pa hluav taws xob rau koj lub system - sportes teeb meem thaum ntxov.
• Auto - noj mov tshuab:Rau cov teeb tsa loj, ntxiv cov PLC maub los (lub khoos kas me me) uas kho cov tshuaj cia. Nws txiav cov phau ntawv ua haujlwm los ntawm 80%-}} Tsis txhob tshaj tawm cov lus hu ntxiv.

Cia peb saib ntawm qhov tseeb - ntiaj teb cov piv txwv. Ib qho Coal Mine hauv tebchaws Australia tau tawm tsam nrog lawv cov Ro system: Pub dej pheeb suab lawv yuav tsum tau kaw txhua lub hlis. Membranes tau tuag tom qab tsuas yog 2 xyoos, them nqi rau lawv hmoov zoo nyob hauv kev hloov pauv.

Lawv txhim kho? Ib tug ob -} theem combo:

• COOL Stripping:Lawv tau teeb tsa lub kaw lus txhawm rau txhawm rau hauv cov dej, uas ib txwm txo qis pH los ntawm kev tshem tawm ntau dhau ntau cov pa roj carbon dioxide.
• HCL txhaj tshuaj:A tiny dose of hydrochloric acid (10% solution) fine-tuned the pH the rest of the way.

Tshwm sim? Ph pH nyob ruaj khov ntawm 7.8. Scalering poob los ntawm lub hlis mob taub hau tsuas yog ntxuav peb lub hlis

Q1: Kuv puas tuaj yeem siv cov dej RO yog tias PH yog sab nraud 6.5-8.5?

A: Yog, tab sis tsis ntev - lub sij hawm. Yog tias koj lub pH yog me ntsis (zoo li 6.0 lossis 9.0), dej nws tus kheej yog tseem muaj kev nyab xeeb haus. Tab sis dhau sijhawm, kev ua kom dej ntau tuaj yeem ua rau dej saj weird (nws yog xim hlau lossis iab) thiab maj mam ua rau koj lub kaw lus ro ro.

Q2: Kuv yuav tsum tau sim ntau npaum li cas kev sim noj cov dej Ph?

• Muaj Tshuab (Fajno):Sim txhua hnub. Cov kab ke no cov txheej txheem ua dej tons ntawm cov dej, yog li PH swings tuaj yeem tshwm sim ceev. Siv online sensor yog tias koj tuaj yeem - Teeb nws kom ceeb toom yog tias pH mus siab tshaj 8.5 lossis qis dua 6.5.
• Cov Tshuab (cov lim hauv tsev):Ntsuas txhua lub lim tiam. Lob tus pheej yig hom digital digital thiab poob nws hauv cov dej pub. Nws yuav siv sijhawm 30 feeb thiab txuag koj los ntawm kev ua surprise los yog membrane kev puas tsuaj.