Hauv cov chaw kho dej khib nyiab niaj hnub no, lubchemical dosing chavplays ib qho tseem ceeb tab sis feem ntau underestimated luag hauj lwm. Nws tsis yog tsuas yog thaj chaw cia rau cov tshuaj, tab sis lub luag haujlwm tag nrho lub luag haujlwm rau kev npaj, ntsuas, thiab tswj kev txhaj tshuaj ntawm cov tshuaj reagents siv thoob plaws ntau theem kev kho mob.
Los ntawmphosphorus tshem tawm thiab coagulation - sedimentation rau denitrification thiab tshuaj tua kab mob, qhov kev ua tau zoo ntawm cov tshuaj txhaj tshuaj ncaj qha cuam tshuam rau kev kho mob, dej zoo, thiab kev nyab xeeb ntawm kev ua haujlwm. Kev tsim tsis zoo lossis kev ua haujlwm tsis zoo tuaj yeem ua rau kev kho tsis ruaj khov, nce nqi ua haujlwm, thiab txawm tias muaj kev nyab xeeb.
Nplooj ntawv no qhia txog cov ntsiab lus tseem ceeb rau covtsim, layout, xaiv cov khoom siv, thiab kev ua haujlwmntawm chemical dosing systems hauv cov chaw kho dej khib nyiab.
1. Qhov tseem ceeb ntawm kev xaiv cov khoom
Chav tsev tshuaj chemical ua haujlwm nyob rau hauv ib puag ncig corrosive heev vim raug cov kua qaub, alkalis, oxidants, thiab lwm yam tshuaj reactive. Yog li ntawd, xaiv cov ntaub ntawv tsim nyog tsim nyog yog qhov tseem ceeb rau kev ua haujlwm ntev thiab kev nyab xeeb.
Phab ntsa yuav tsum tau tsim los ntawm cov kua qaub- thiab alkali- cov ntaub ntawv tiv taus xws li aluminium composite panels lossis xim -coated steel phaj. Cov ntaub ntawv no muaj zog tiv thaiv corrosion thaum tswj kev ua haujlwm ruaj khov nyob rau lub sijhawm.
Flooring tseem ceeb sib npaug. Tsis yog-slip, tsis muaj dej tsis zoo- xws li epoxy flooring lossis cov vuas kho- raug pom zoo los tiv thaiv kev raug xwm txheej thiab ua kom huv si yooj yim. Txij li cov tshuaj spills yog inevitable thaum lub sij hawm ua hauj lwm, flooring yuav tsum tau resistant rau tshuaj corrosion.
Qab nthab yuav tsum tau ua los ntawm lub teeb yuag, corrosion{0}}cov ntaub ntawv tiv taus xws li PVC panels lossis aluminium alloy nplooj ntawv. Cov ntaub ntawv no txo cov txheej txheem thauj khoom thaum tuav lub sijhawm ntev - lub sijhawm ua haujlwm nyob rau hauv qhov chaw ntub dej thiab tshuaj lom neeg nruj heev.
Tsis tas li ntawd, racks cia tshuaj yuav tsum tau ua los ntawm stainless hlau los yog corrosion- cov ntaub ntawv resistant. Cov thawv ntim khoom yuav tsum yog du, muaj cov ntawv sau meej meej, thiab qhov loj me kom haum rau kev tuav ruaj ntseg thiab khaws cia zoo.
2. Rational Spatial Layout thiab Safety Design
Ib qhov chaw zoo - npaj layout yog qhov tseem ceeb rau ob qho tib si kev ua haujlwm zoo thiab kev tswj xyuas kev nyab xeeb.
Ib lub hauv paus ntsiab lus tseem ceeb tshaj plaws yogtshuaj compatibility. Cov tshuaj uas muaj cov khoom zoo sib xws-los yog cov uas tsis hnov mob txaus ntshai rau ib leeg- tuaj yeem khaws cia nyob ib sab. Txawm li cas los xij, cov tshuaj tsis sib xws, xws li acids, alkalis, thiab muaj zog oxidizers, yuav tsum tau sib cais nruj me ntsis.
Rau cov tshuaj muaj corrosive heev los yog muaj kev phom sij, cov tank cia yuav tsum tau muab tso rau hauv cov kav dej. Lub peev xwm ntawm cov dikes yuav tsum yog tsawg kawg yog sib npaug ntawm qhov siab tshaj plaws ntawm lub tank cia kom tsis txhob muaj tshuaj lom neeg los ntawm kev sib kis thaum muaj kev sib tsoo. Ib qho kev sib sau ua ke yuav tsum tau muab tso rau hauv qhov chaw ntim khoom thiab kho nrog cov tshuaj tiv thaiv -corrosion coatings.
Lwm qhov teeb meem tshwm sim hauv chav dosing yog disorganized piping. Vim muaj coob tus me me - txoj kab nruab nrab, cov txheej txheem tsis zoo tuaj yeem ua rau muaj kev tsis sib haum xeeb, lub sijhawm tu thiab ua haujlwm tsis raug. Txhawm rau zam qhov no, cov kav dej yuav tsum tau hla los ntawm cov trenches los yog ntsia tom qab cov cuab yeej hauv kev teeb tsa.
Cov txheej txheem huv si thiab cov laj thawj tsis yog tsuas yog txhim kho kev ua tau zoo tab sis kuj txo qis qhov tshwm sim ntawm tib neeg kev ua yuam kev thaum lub sijhawm ua haujlwm thiab kev saib xyuas.
3. Cov Cuab Yeej Siv Hluav Taws Xob thiab Kev Pabcuam
Qhov cua tshuab yog qhov yuav tsum tau muaj kev nyab xeeb tseem ceeb hauv txhua chav tshuaj tshuaj. Kev sib sau ntawm cov tshuaj vapors tuaj yeem ua rau muaj kev phom sij loj rau kev noj qab haus huv thiab ua rau muaj feem cuam tshuam rau corrosion thiab khoom puas tsuaj.
Cov cua tshuab yuam kev yuav tsum tau nruab kom ntseeg tau tias kev sib pauv huab cua tsis tu ncua thiab tswj kom muaj kev nyab xeeb ua haujlwm. Tsis tas li ntawd, cov kav dej tshiab yuav tsum muaj rau kev tu cov cuab yeej thiab kev tshem tawm thaum muaj xwm txheej ceev thaum muaj tshuaj lom.
Cua purging systems kuj raug pom zoo, tshwj xeeb tshaj yog nyob rau hauv cov kab noj uas cov roj tsub zuj zuj tuaj yeem cuam tshuam rau kev ua haujlwm ntawm lub twj tso kua mis.
Txhawm rau txhim kho kev nyab xeeb ntxiv, cov ntaub thaiv tiv thaiv lossis cov ntaub thaiv npog tuaj yeem raug teeb tsa nyob ib puag ncig cov twj tso kua mis kom tiv thaiv kev sib tsoo ntawm cov neeg ua haujlwm.
4. Cov qauv ntawm Kev Siv Tshuaj Siv Tshuaj
Ib tug raug tshuaj dosing system muaj ntau yam tseem ceeb, xws li:
Chemical cia tanks
Metering twj tso kua mis
Variable zaus tsav (VFDs)
Qib ntsuas
Hluav taws xob tswj txee
Cov agitators
Pipelines thiab li qub
Kev nyab xeeb li qub thiab kos li qub
Kev ntsuas siab thiab cov lim dej
Hauv qee lub tshuab, lub raj xa dej tshiab kuj tseem suav nrog los tiv thaiv kev txhaws thiab pab ntxuav.
Txhua yam yuav tsum raug xaiv thiab teeb tsa raws li cov txheej txheem yuav tsum tau ua kom paub meej tias kev noj tshuaj kom raug thiab ua haujlwm ruaj khov.
5. Kev ntsuas twj tso kua mis xaiv thiab cov ntsiab lus tseem ceeb
Lub metering twj tso kua mis yog lub hauv paus tseem ceeb ntawm kev siv tshuaj, lub luag haujlwm rau kev xa cov tshuaj ntau npaum li cas rau hauv cov txheej txheem kho.
Feem ntau cov twj ntsuas ntsuas siv hauv kev kho dej khib nyiab muaj xws li cov twj tso kua mis, cov twj siv hluav taws xob diaphragm, cov twj hydraulic diaphragm, thiab cov twj electromagnetic diaphragm.
Thaum xaiv lub twj tso kua mis ntsuas, ntau yam tseem ceeb yuav tsum tau xav txog:
Siab:Qhov ntsuas siab ntawm lub twj tso kua mis yuav tsum yog 10-20% siab tshaj qhov siab tshaj plaws kev khiav hauj lwm siab kom ntseeg tau tias kev ua tau zoo.
Tus nqi ntws:Lub twj tso kua mis yuav tsum ua haujlwm tsis pub dhau 30-90% ntawm nws cov peev xwm ntsuas kom pom kev ua haujlwm zoo thiab raug.
Chemical Properties:Cov tshuaj corrosive xav tau diaphragm - hom twj tso kua mis kom muaj kev nyab xeeb zoo dua, thaum siab - siab lossis siab - cov ntawv siv kub yuav xav tau lub twj tso kua mis.
Qhov yuav tsum tau muaj tseeb:Rau qhov qis- ntws, siab- kev txhaj tshuaj muaj tseeb (feem ntau qis dua 60 L / h), cov twj siv hluav taws xob electromagnetic diaphragm nyiam dua.
Lub taub hau cov ntaub ntawv yuav tsum raug xaiv raws li kev sib raug zoo ntawm cov tshuaj, nrog rau kev xaiv xws li PP, PVC, PTFE, thiab stainless hlau (SS316).
Kev saib xyuas tsis tu ncua yog qhov tseem ceeb. Lubrication ntawm cov khoom txav yuav tsum tau kuaj xyuas ib ntus, thiab kev tshuaj ntsuam xyuas yuav tsum tau ua tsawg kawg txhua peb lub hlis.
6. Kev xaiv tshuaj thiab kev ua kom zoo dua
Cov tshuaj nquag siv hauv kev kho dej khib nyiab dosing muaj xws li:
Coagulants xws li polyaluminium chloride (PAC) thiab polyferric sulfate
Flocculants xws li polyacrylamide (PAM)
Cov tshuaj kho pH xws li sodium hydroxide thiab txiv qaub
Cov pa roj carbon xws li sodium acetate
Cov tshuaj tua kab mob xws li sodium hypochlorite thiab chlorine dioxide
Ntawm cov no, kev siv tshuaj coagulant yuav tsum tau saib xyuas tshwj xeeb, vim tias kev noj tshuaj tsis raug tuaj yeem ua rau kev kho mob tsis zoo lossis siv tshuaj lom neeg ntxiv.
Covjar test methodyog dav siv los txiav txim qhov pom zoo npaum li cas. Los ntawm kev simulating coagulation nyob rau hauv kev tswj xyuas thiab ntsuas turbidity tom qab sedimentation, cov neeg ua haujlwm tuaj yeem txheeb xyuas cov qib zoo tshaj plaws.
Txoj kev no tsis yog tsuas yog txhim kho kev kho mob kom zoo tab sis kuj txo cov nqi tshuaj lom neeg thiab txo qis kev tsim cov sludge.
7. Cov teeb meem kev ua haujlwm thiab kev daws teeb meem
Txawm hais tias tsim nyog, kev siv tshuaj yuav ntsib teeb meem kev ua haujlwm. Qee qhov teeb meem feem ntau suav nrog:
Lub twj tso kua mis tsis txaus:
Feem ntau tshwm sim los ntawm huab cua nkag mus rau hauv lub twj tso kua mis chamber los yog clogged inlet lim. Xyuas kom nruj cov yeeb nkab sib txuas thiab tu tsis tu ncua tuaj yeem daws qhov teeb meem no.
Pump ua haujlwm yam tsis muaj tshuaj lom neeg:
Qhov no tej zaum yuav tshwm sim los ntawm cov tshuaj tsis tshua muaj nyob rau hauv lub tank cia, pipeline blockages, los yog leaks. Kev tuav cov kua dej kom txaus thiab tshuaj xyuas cov kav dej tsis tu ncua yog qhov tseem ceeb.
Pump taub hau leakage:
Feem ntau tshwm sim los ntawm cov roj foob puas ntawm cov hydraulic thiab tsav tsheb. Kev hloov pauv raws sijhawm yog tsim nyog los tiv thaiv kev puas tsuaj ntxiv.
Valve malfunction:
Crystallization ntawm cov tshuaj los yog hnav thiab tsim kua muag tuaj yeem cuam tshuam rau kev ua haujlwm ntawm lub valve. Kev tshuaj xyuas tsis tu ncua thiab hloov cov khoom hnav yog pom zoo.
Kev tiv thaiv kev saib xyuas yog qhov zoo tshaj plaws. Kev tshuaj xyuas ib xyoos ib zaug ntawm cov khoom tseem ceeb- xws li diaphragms, seals, li qub, thiab cov ntxaij lim dej- tuaj yeem txo qis sijhawm thiab txuas ntxiv cov khoom siv.
Xaus
Chav dosing tshuaj muaj ntau tshaj li qhov chaw txhawb nqa -nws yog aLub hauv paus tswj kev taw qhia rau kev kho kom zoo, kev siv tshuaj lom neeg, thiab kev nyab xeeb ntawm kev ua haujlwmhauv cov chaw kho dej khib nyiab.
Los ntawm kev tsom mus rau kev xaiv cov khoom tsim nyog, kev tsim qauv tsim nyog, kev xaiv cov cuab yeej tsim nyog, thiab kev saib xyuas zoo ib yam, cov neeg ua haujlwm tuaj yeem txhim kho kev ntseeg tau zoo thiab tag nrho cov nroj tsuag kev ua tau zoo.
Hauv kev lag luam uas qhov ua tau zoo, kev ua raws cai, thiab kev nyab xeeb yog qhov tseem ceeb, kev ua kom zoo rau kev siv tshuaj lom neeg tsis yog xaiv tau - nws yog qhov tseem ceeb.