PH Tus nqi cuam tshuam li cas rau Coagulation nyhuv ntawm Polyaluminum Chloride (PAC)? Kev Tshawb Fawb Txog Kev Ua Haujlwm Zoo Tshaj Plaws PH Ntau Rau PAC

Vim li cas tus nqi pH txiav txim siab txog kev kho mob ntawmPolyaluminium Chloride (PAC)?

Hauv ntau cov txheej txheem kho dej,Polyaluminium Chloride (PAC), raws li ib qho ntawm feem ntau siv inorganic polymer coagulants, yog feem ntau siv nyob rau hauv haus dej purification, municipal wastewater kho mob, thiab industrial wastewater tswj. Txawm li cas los xij, ntau tus neeg siv pom thaum lub sijhawm ua haujlwm tiag tiag uas txawm tias thaum PAC ntau npaum li cas tseem tsis hloov pauv, cov dej ntws tawm, cov nyhuv flocculation, thiab txawm tias cov nqi khiav lag luam tuaj yeem hloov pauv ntau.

Ib qho ntawm cov laj thawj tseem ceeb ua rau qhov tshwm sim no yog tus nqi pH.

Rau txhua qhov system sivPolyaluminium Chloride (PAC)rau coagulation thiab sedimentation, pH tsis tsuas yog cuam tshuam rau txhuas speciation tom qab PAC hydrolysis tab sis kuj ncaj qha txiav txim siab tus nqi neutralization muaj peev xwm, ceev ntawm floc tsim, thiab cov nyhuv zaum kawg. Yog tias pH poob rau sab nraum qhov tsim nyog, txawm tias nce PAC ntau npaum li cas ua rau nws nyuaj rau kev ua tiav cov txiaj ntsig zoo tshaj plaws.

Raws li tus kws tshaj lij kev kho dej kev daws teeb meem, ECOLINK TECHNOLOGY tau muab PAC cov khoom lag luam ntev thiab kev txhawb nqa thoob ntiaj teb cov dej haus, cov chaw lag luam, thiab cov haujlwm kho dej khib nyiab. Raws li daim ntawv thov kev paub dhau los, kev ua kom zoo dua tus nqi pH feem ntau ua tau zoo ntawm kev txhim kho cov txiaj ntsig kev kho mob ntau dua li tsuas yog nce cov coagulant ntau npaum li cas, thaum tib lub sijhawm txo cov tshuaj noj thiab cov nqi khiav lag luam.

Vim li cas tus nqi pH cuam tshuam rau PAC Coagulation Reaction?

Tom qab PAC nkag mus rau hauv lub cev dej, nws tam sim ntawd tau txais cov tshuaj tiv thaiv hydrolysis thiab maj mam tsim cov txhuas-hydroxyl polymers nrog cov qauv sib txawv. Cov ntaub ntawv ntau yam ntawm txhuas ions no ua rau ntau lub luag haujlwm xws li kev them nqi nruab nrab, adsorption-bridging, thiab cheb flocculation, thiab lawv tsim yog tswj tag nrho los ntawm pH ib puag ncig.

Yog li ntawd, kev ua haujlwm ntawmPolyaluminium Chloride (PAC) rau kev kho dejtsis zoo li qub tab sis tsis tu ncua kho nws cov txheej txheem coagulation raws li pH hloov.

Cov cwj pwm tseem ceeb ntawm PAC nyob rau hauv cov pH sib txawv yog raws li hauv qab no:

pH < 5.0: Tsawg Tus Nqi Tsis Muaj Peev Xwm

Thaum lub kaw lus nyob rau hauv cov kua qaub, PAC feem ntau tshwm sim li mononuclear txhuas ions xws li $Al^{3+}$ thiab $Al(OH)^{2+}$.

Txawm hais tias cov ions no tseem muaj qee tus nqi zoo rau kev ua kom tsis zoo ntawm cov khoom colloidal, lawv cov adsorption thiab bridging capacities yog qhov tsis txaus vim qhov qis ntawm polymerization. Yog li ntawd, qhov ntau dua PAC ntau npaum li cas feem ntau yuav tsum ua kom ua tiav qhov kev tshem tawm tib yam turbidity.

Rau kev kho dej khib nyiab hauv kev lag luam, kev ua haujlwm ntev - lub sijhawm ua haujlwm nyob rau hauv qhov ntau yam no tsis yog tsuas yog ua rau kev siv tshuaj lom neeg xwb tab sis kuj tseem tuaj yeem nce nqi kho mob.

pH 6.0–8.0: Qhov Zoo Tshaj Plaws Ua Haujlwm rau PAC

Thaum cov pH tswj hwm ntawm 6.0 thiab 8.0, polynuclear polymerized aluminium ions maj mam dhau los ua qhov tseem ceeb tshwj xeeb, suav nrog $ Al_{13}O_4(OH)_{24}^{7+}$ polycation, uas muaj cov nqi zoo heev.

Cov theem no kuj yog thaj av uas cov polyaluminium chloride coagulant exerts nws txoj kev ua tau zoo.

Hauv qhov xwm txheej no:

Tus nqi neutralization efficiency yog siab tshaj;

Qhov ceev ntawm floc tsim yog ceev tshaj plaws;

Cov floc hais yog denser;

Qhov kev daws teeb meem yog qhov ruaj khov dua;

Tus nqi siv PAC yog siab tshaj;

Kev tswj cov dej turbidity yog ruaj khov dua.

Yog li ntawd, feem ntau cov dej haus cov nroj tsuag, cov chaw kho dej khib nyiab hauv nroog, thiab cov kev kho dej khib nyiab hauv kev lag luam sim lawv qhov zoo tshaj plaws los tswj cov kev khiav hauj lwm pH hauv qhov no.

Rau cov lag luam tab tom nrhiav qhov zoo tshaj plaws PAC pH ntau yam rau kev kho dej khib nyiab, 6.0-8.0 feem ntau yog lub qhov rais ua haujlwm tseem ceeb suav nrog thaum tsim engineering.

pH 8.0–9.0: Sweep Flocculation maj mam dominates

Raws li alkalinity nce, ntau ntawm $Al(OH)_3$ nag lossis daus pib tsim.

Nyob rau lub sijhawm no, PAC tseem tuaj yeem tuav lub peev xwm coagulation zoo, tab sis cov txheej txheem tseem ceeb ntawm kev ua haujlwm tau maj mam hloov los ntawm kev them nqi nruab nrab mus rau cheb flocculation.

Qhov loj ntawm txhuas hydroxide nag lossis daus tsim tuaj yeem cuam tshuam cov khoom raug tshem tawm, tso cai rau cov pa phem los nyob nrog cov flocs, yog li qhov kev tshem tawm tag nrho tseem muaj qhov siab.

Txawm li cas los xij, piv rau qhov zoo tshaj pH ntau yam, kev siv tshuaj lom neeg ua haujlwm tau pib poob qis, thiab qee qhov kev siv yuav tsum tau ua kom zoo ntawm PAC ntau npaum li cas.

pH > 9.0: Kev poob sai sai hauv PAC Coagulation Peev Xwm

Thaum lub cev dej txuas ntxiv ua alkaline, aluminium ions maj mam hloov mus rau qhov tsis zoo $Al(OH)_4^-$ (aluminate).

Txij li thaum nws poob nws cov nqi nruab nrab muaj peev xwm, PAC tsis tuaj yeem tsim cov tshuaj tiv thaiv flocculation ruaj khov.

Tshwj xeeb tshaj yog thaum pH siab tshaj 10.0, txawm tias PAC ntau npaum li cas ntxiv, nws nyuaj rau tsim cov flocs zoo. Qhov no tsis tsuas yog ua rau muaj kev poob qis hauv kev kho mob tab sis kuj ua rau cov tshuaj khib nyiab.

Yog li ntawd, rau cov dej khib nyiab alkaline, kev hloov pauv pH yuav tsum tau ua ntej ua ntej noj PAC, uas yog ib qho tseem ceeb ua ntej rau kev ua haujlwm ruaj khov.

PAC pH yuav tsum tau sib txawv ntawm ntau hom dej

Txawm hais tias PAC muaj ntau qhov kev siv tau, cov dej sib txawv sib txawv hauv cov muaj pes tsawg leeg, alkalinity, thiab cov khoom muaj kuab paug, yog li qhov kev ua haujlwm zoo pH kuj muaj qee qhov sib txawv.

1. Ntuj Nto Dej

Cov dej hauv ntuj xws li cov dej ntws, cov dej ntws, thiab cov pas dej feem ntau muaj peev xwm tsis zoo, thiab lawv cov pH feem ntau nyob ntawm 6.5 txog 8.5. Feem ntau, qhov no twb ua tau raws li PAC cov kev cai ua haujlwm.

Nyob rau hauv ib txwm muaj xwm txheej, tsis tas yuav tsum tau kho pH tshwj xeeb.

Txawm li cas los xij, kev saib xyuas online yuav tsum tau ua kom muaj zog raws li cov hauv qab no:

Algae blooms nyob rau lub caij ntuj sov ua rau nce pH;

Hnyav los nag lossis kua qaub ua rau txo qis pH;

Kev hloov raws caij nyoog hauv qhov chaw dej.

Kev hloov kho raws sij hawm ntawm kev khiav hauj lwm tsis tuaj yeem ua kom muaj kev ruaj ntseg coagulation cuam tshuam thiab txhim kho kev ua haujlwm kev nyab xeeb ntawm kev kho dej haus.

2. Muaj dej khib nyiab

Kev hloov pauv ntawm pH ntawm cov dej khib nyiab feem ntau yog ntau dua li cov dej hauv lub cev, thiab cov kua qaub los yog cov dej tsis zoo alkaline tuaj yeem tshwm sim hauv kev lag luam sib txawv. Yog tias polyaluminium chloride (PAC) ntxiv ncaj qha yam tsis muaj pH hloov kho, nws tuaj yeem ua rau poob qis hauv coagulation efficiency. Yog li ntawd, feem ntau cov dej khib nyiab hauv kev lag luam yuav tsum tau txais cov kua qaub- puag nruab nrab ua ntej nkag mus rau PAC coagulation txheej txheem kho.

Tshooj tom ntej yuav piav qhia txog cov tswv yim tswj pH zoo tshaj plaws thiab cov lus pom zoo ua haujlwm rau PAC hauv cov dej khib nyiab.

3. Kuv qhov dej ntws

Acid mine drainage (AMD) feem ntau muaj tus nqi pH qis nrog rau qhov siab ntawm cov hlau hnyav ions. Rau hom dej khib nyiab no, tso siab rau PAC nkaus xwb ua rau nws nyuaj kom tau txais txiaj ntsig zoo tshaj plaws. Feem ntau, txiv qaub neutralization yuav tsum ua ntej, tom qab ntawd siv PAC kom ua tiav coagulation thiab sedimentation. Cov ntsiab lus tom ntej hauv cov koob no yuav qhia ntxiv txog kev pom zoo ua haujlwm pH thiab kev ua kom zoo rau kuv cov dej khib nyiab.

Qhov zoo tshaj pH tswj cov tswv yim rau PAC hauv Industrial Wastewater thiab Mine Drainage Treatment

Ntau hom dej khib nyiab muaj qhov sib txawv hauv cov pa phem, alkalinity, conductivity, thiab buffering peev. Yog li ntawd, qhov zoo tshaj plaws kev khiav hauj lwm tej yam kev mob rauPolyaluminium Chloride (PAC)thoob plaws ntau yam kev lag luam tsis zoo ib yam nkaus.

Hauv kev tsim vaj tsev tiag tiag, kev vam khom tsuas yog nce PAC ntau npaum li cas los txhim kho cov teebmeem kev kho mob feem ntau tsis ua tiav cov txiaj ntsig zoo. Hauv qhov sib piv, kho cov pH mus rau qhov tsim nyog ntau yam ua ntej kev kho coagulation tuaj yeem tsis tsuas yog txhim kho flocculation efficiency tab sis kuj txo cov tshuaj noj thiab txo cov nqi khiav lag luam.

Raws li ECOLINK TECHNOLOGY muaj kev paub txog kev ua haujlwm nplua nuj, peb pom zoo tias cov ntawv thov sib txawv tsim cov txheej txheem pH tswj raws li cov yam ntxwv zoo ntawm cov dej tsis yog siv lub tswv yim zoo sib xws.

Industrial Wastewater Treatment: Kho pH Ua ntej kom Unleash PAC qhov ua tau zoo tshaj plaws

Cov peev txheej ntawm cov dej khib nyiab hauv kev lag luam yog qhov nyuaj, thiab cov kua qaub thiab alkalinity ntawm cov dej khib nyiab tawm los ntawm kev lag luam sib txawv sib txawv.

Piv txwv li:

Alkaline ntxuav dej khib nyiab los ntawm textile printing thiab dyeing kev lag luam feem ntau ncav cuag pH ntawm 10-12;

Alkaline ntxuav cov dej khib nyiab los ntawm cov chaw ua khoom noj khoom haus tuaj yeem zoo sib xws nyob rau hauv cov pH siab;

Cov dej khib nyiab tsim los ntawm cov txheej txheem tsim khoom xws li hlau pickling thiab etching tej zaum yuav muaj pH ntawm 2-4 xwb.

Yog hais tias polyaluminium chloride (PAC) raug ntxiv ncaj qha rau ob hom dej khib nyiab, nws feem ntau nyuaj rau tsim cov tshuaj tiv thaiv coagulation ruaj khov.

Cov laj thawj yog:

Thaum acidity muaj zog heev, PAC hydrolysis tsis txaus, thiab kev tsim ntawm polynuclear aluminium ions raug txwv;

Thaum alkalinity siab dhau lawm, aluminium ions hloov mus rau hauv aluminate, poob lawv lub peev xwm coagulation.

Yog li ntawd, hauv kev kho dej khib nyiab, kua qaub lossis alkali yuav tsum xub siv los kho cov kab ke kom tsim nyog ua ntej siv PAC.

Rau feem ntau cov dej num hauv kev lag luam, qhov pom zoo ua haujlwm pH yog khaws cia ntawm 6.0 thiab 8.5, uas sib npaug coagulation efficiency, kev siv tshuaj lom neeg, thiab daws teebmeem.

Yog tias lub tuam txhab tab tom nrhiav pH qhov zoo tshaj plaws rau PAC dosing hauv cov dej khib nyiab, qhov kev tswj xyuas no tuav cov nqi siv hluav taws xob siab.

Kev kho kom pom tseeb ntawm Mine Wastewater thiab Acid Mine Drainage (AMD)

Acid mine kua (AMD) tsim thaum lub sijhawm ua haujlwm mining feem ntau yog acidic vim yog oxidation ntawm sulfide minerals, thiab cov dej nyoos pH ntawm qee qhov haujlwm tseem tsawg li 2-3.

Ntxiv rau qhov siab ntawm cov khib nyiab pov tseg, hom dej khib nyiab no feem ntau muaj ntau yam hlau hnyav xws li hlau, manganese, tooj liab, thiab zinc.

Rau cov dej zoo li no, kev cia siab rau PAC nkaus xwb tsis tuaj yeem ua tiav cov txiaj ntsig zoo tshaj plaws.

Txoj kev kho kom raug yuav tsum muaj ob kauj ruam tseem ceeb:

Kauj Ruam Ib: Neutralization thiab pH hloov kho

Feem ntau, cov tshuaj hauv qab no yog siv:

Txiv qaub [$Ca(OH)_2$]

Sodium hydroxide ($NaOH$)

Txhawm rau nce pH system mus rau 7.0-8.5.

Cov txheej txheem no tsis tsuas yog txhim kho qhov chaw ua haujlwm rau PAC nkaus xwb tab sis kuj ua rau muaj ntau cov hlau hnyav los ua hydroxide precipitates.

Kauj Ruam 2: Siv Polyaluminium Chloride (PAC)

Tom qab ua tiav pH hloov, PAC ntxiv rau coagulation.

PAC tuaj yeem nqus tau cov khoom me me hydroxide sai sai, ua rau lawv tsim cov flocs loj dua thiab txhim kho kev daws teeb meem.

Yog li ntawd, hauv kuv qhov kev kho dej khib nyiab:

kev hloov pH yog lub luag haujlwm rau "tsim precipitates";

Polyaluminium Chloride (PAC)yog lub luag haujlwm rau "kev sib sau ua ke thiab daws".

Ob leeg koom tes nrog ib leeg los txhim kho effluent stability thiab txo cov load rau tom qab pom systems.

Rau cov haujlwm engineering uas xav nrhiav PAC cov kev daws teeb meem rau kev kho cov dej khib nyiab los yog PAC daim ntawv thov rau cov kua qaub mine, cov txheej txheem kev sib xyaw no tau dhau los ua kev daws teeb meem.

Pom zoo ua haujlwm zoo pH ntawm PAC rau txawv daim ntawv thov scenarios

Txawm hais tias PAC muaj qhov hloov tau zoo, cov hom phiaj kev kho dej sib txawv tseem pom zoo kom siv cov kev tswj sib txawv.

Cov txiaj ntsig saum toj no yog cov sijhawm ua haujlwm paub tab hauv kev ua haujlwm engineering thiab tuaj yeem ua lub hauv paus tseem ceeb rau kev tsim qauv PAC.

Yuav Tswj pH zoo li cas hauv PAC Kev Kho Mob?

Kev tswj pH zoo tsis yog tsuas yog cuam tshuam nrog cov nyhuv coagulation nkaus xwb tab sis tseem cuam tshuam ncaj qha rau PAC cov nqi noj, sludge zoo, thiab kev ua haujlwm ruaj khov ntawm tag nrho cov kab ke.

Rau kev ua haujlwm tsis tu ncua kev kho dej khib nyiab, yuav tsum tsim kom muaj kev tswj hwm pH.

I. Tsim kom muaj kev soj ntsuam pH txuas ntxiv

Piv nrog rau kev ntsuas phau ntawv, kev saib xyuas pH online tuaj yeem cuam tshuam cov kev hloov pauv hauv dej hauv lub sijhawm.

Kev saib xyuas tsis siv neeg tshwj xeeb yog pom zoo raws li kev ua haujlwm hauv qab no:

Kev hloov pauv loj hauv kev lag luam dej khib nyiab dej zoo;

Kev sib xyaw ua kua los ntawm ntau cov kab ntau lawm;

Loj - cov chaw kho dej khib nyiab hauv kev ua haujlwm tas mus li;

Tsis siv neeg dosing systems.

Rau cov dej saum npoo ntuj los yog cov dej hauv nroog engineering nrog cov dej ruaj khov zoo, kev ntsuas phau ntawv tsis tu ncua feem ntau tuaj yeem ua tau raws li qhov yuav tsum tau ua.

II. Xaiv cov tshuaj hloov kho pH ntse

Thaum nce pH:

Cov kev xaiv muaj xws li:

Txiv qaub ($Ca(OH)_2$)

Qhov zoo: Tus nqi qis, tsim nyog rau kev ua haujlwm loj - ua haujlwm tas mus li, dav siv hauv cov dej khib nyiab hauv kev lag luam thiab kev kho dej khib nyiab.

Lwm txoj kev xaiv yogSodium Hydroxide (NaOH$), nrog cov yam ntxwv suav nrog: Kev nrawm nrawm nrawm, kev hloov kho meej dua, dav siv hauv kev tswj tsis siv neeg.

Thaum txo qis pH:

Hauv engineering, cov hauv qab no feem ntau yog siv:

Sulfuric acid ($H_2SO_4$)

Hydrochloric acid ($ HCl $)

Ntawm lawv, sulfuric acid yog siv dav tshaj plaws; Thaum lub kaw lus xav tau los tswj qhov nce ntawm sulfate radicals, hydrochloric acid tuaj yeem ua ntej.

Cov tshuaj sib txawv yuav tsum raug xaiv los ntawm kev sib xyaw cov dej khib nyiab, cov nqi khiav lag luam, thiab cov khoom siv.

III. Kev Siv Tshuaj Kho Kom Zoo ntawm PAC

Ntau qhov kev ua haujlwm ntawm qhov chaw ua haujlwm tsis zoo tsis yog vim cov khoom lag luam zoo ntawm PAC, tab sis vim muaj qhov sib txawv ntawm qhov sib xyaw ua ke.

Cov txheej txheem kev khiav dej num yuav tsum yog:

Cov dej nyoos → pH kho → PAC nrawm sib tov → Flocculation Reaction → Sedimentation Separation

Qhov kev khiav dej num no ua kom ntseeg tau tias thaum PAC nkag mus rau hauv lub cev, lub cev dej twb nyob rau hauv qhov chaw zoo tshaj plaws.

Yog tias PAC tau ntxiv ua ntej, ua raws li cov kua qaub- hloov pauv, cov txheej txheem uas twb tau ua tiav lawm yuav raug rhuav tshem. Qhov no tsis tsuas yog txo cov coagulation efficiency, tab sis kuj yuav ua rau xoob flocs, txo qhov kev ua tau zoo, thiab muaj tshuaj lom neeg ntau ntxiv.

Yog li ntawd, hauv txhua txoj kev kho mob siv PAC coagulants, lub hauv paus ntsiab lus ntawm "kho pH ua ntej, koob tshuaj PAC tom qab" yuav tsum tau ua raws li.

Yuav Ua Li Cas Tsis Siv Neeg pH Tswj Txhim Kho Kev Kho Mob ntawmPolyaluminium Chloride (PAC)?

Nrog rau kev txhim kho tas mus li ntawm automation nyob rau hauv industrial wastewater kho tshuab, ntau thiab ntau cov dej khib nyiab kho cov nroj tsuag tau pib txais yuav tsis siv neeg pH tswj tshuab los xyuas kom meej tiasPolyaluminium Chloride (PAC)ib txwm ua haujlwm hauv qhov pom kev pom qhov rai.

Piv nrog rau kev tshawb nrhiav phau ntawv thiab kev hloov pauv tsis tu ncua, kev tswj tsis siv neeg tuaj yeem tsis tsuas yog txhim kho kev ruaj ntseg zoo, tab sis kuj txo PAC tshuaj noj thiab txo cov kev cuam tshuam ntawm phau ntawv, nqa kev ua haujlwm siab dua rau cov lag luam.

Rau cov dej khib nyiab hauv kev lag luam nrog kev hloov pauv ntawm cov dej tsis tu ncua, ECOLINK TECHNOLOGY pom zoo kom muab qhov tseem ceeb rau kev teeb tsa hauv online pH xyuas thiab kev siv tshuaj tsis siv neeg kom ua tiav kev tswj xyuas ntse ntawm PAC coagulation txheej txheem.

Vim li cas cov dej khib nyiab Industrial xav tau kev tswj pH ntau dua?

Qhov sib xyaw ntawm cov dej khib nyiab tawm los ntawm ntau lub tuam txhab kev lag luam hloov pauv lub sijhawm sib txawv ntawm hnub, piv txwv li:

Cov kab ntau lawm tso tawm cov dej khib nyiab hloov pauv;

Kev ntxuav, pickling, thiab alkaline ntxuav cov txheej txheem khiav sib hloov;

CIP kev tu hauv online ua rau muaj kev hloov pauv pH sai heev;

Production load hloov nyob rau hauv sib txawv hloov.

Yog tias kev tshawb nrhiav phau ntawv tseem tau txais, nws yooj yim heev rau cov hauv qab no tshwm sim:

Cov pH twb hloov lawm thaum PAC tau koob tshuaj;

Flocculation cuam tshuam tsis zoo;

PAC noj nce ntxiv;

Cov dej turbidity fluctuates heev;

Sludge noo noo cov ntsiab lus nce.

Lub tshuab tswj tsis siv neeg tuaj yeem saib xyuas cov pH muaj txiaj ntsig hauv lub sijhawm tiag tiag thiab tuaj yeem kho cov tshuaj acid lossis alkali raws li tus nqi tsim nyog, tso cai rau PAC ib txwm ua nws lub luag haujlwm hauv qhov tsim nyog cov tshuaj tiv thaiv ib puag ncig.

Rau kev lag luam dej khib nyiab PAC kev kho tshuab uas yuav tsum tau ua haujlwm ntev - lub sijhawm ruaj khov, kev tswj tsis siv neeg tau maj mam dhau los ua qhov tseem ceeb hauv kev txhim kho kev ua haujlwm zoo.

Txoj Cai Ua Haujlwm ntawm Tsis Siv Neeg pH Control System

Lub kaw lus tswj tsis siv neeg ua tiav feem ntau suav nrog cov hauv qab no:

Online pH sensor;

PLC lossis maub los;

Acid dosing device;

Alkali dosing device;

Kev saib xyuas cov ntaub ntawv thiab tswb system.

Nws lub luag haujlwm logic yog raws li nram no:

Cov dej nyoos nkag mus rau hauv lub cev → Online pH nrhiav kom tau → Tus tswj xyuas cov ntaub ntawv → Tsis siv neeg hloov cov kua qaub / alkali dosing → pH nce mus txog tus nqi teev → Dosing Polyaluminum Chloride (PAC) rau kev sib tov nrawm → Flocculation → Sedimentation

Qhov kev kaw no - txoj kev tswj lub voj voog tuaj yeem zam qhov kev poob qis ntawm PAC coagulation kev ua tau zoo los ntawm kev hloov pauv pH, ua rau tag nrho cov txheej txheem kho kom ruaj khov thiab txhim khu kev qha.

Cov txiaj ntsig tseem ceeb coj los ntawm Kev Tswj Tsis Siv Neeg

Kev teeb tsa kom zoo ntawm kev hloov kho pH tsis siv neeg tuaj yeem txhim kho rau PAC cov txheej txheem kho hauv ntau yam:

Txhim kho qhov ruaj khov ntawm cov tshuaj tiv thaiv coagulation;

Txo cov tshuaj PAC;

Txo cov kua qaub thiab alkali pov tseg;

Txhim kho cov qauv floc thiab ua kom nrawm nrawm;

Txo kev siv zog ntawm cov neeg ua haujlwm;

Txhim kho qhov sib xws ntawm cov dej tsis zoo.

Rau cov chaw ua lag luam loj, cov nroj tsuag dej khib nyiab hauv nroog, thiab cov tuam txhab tsim khoom tas mus li, txoj kev tswj hwm tus kheej no tuaj yeem txo cov nqi ua haujlwm ntev -.

Kev sib raug zoo ntawm pH nqi thiab Residual Aluminium yog dab tsi?

Ntxiv nrog rau kev cuam tshuam cov nyhuv coagulation, pH kuj tseem cuam tshuam ncaj qha rau covResidual Aluminiumcov ntsiab lus hauv cov dej kho.

Rau kev kho dej haus, residual aluminium tsis tsuas yog cuam tshuam rau cov dej tsis zoo, tab sis kuj yog ib qho tseem ceeb tswj qhov taw qhia uas cov nroj tsuag dej tsom rau lub sijhawm ua haujlwm; rau qee qhov kev lag luam tsim khoom, ntau dua qhov seem ntawm txhuas kuj tuaj yeem cuam tshuam sludge dewatering kev ua tau zoo thiab kev ua haujlwm ntawm cov txheej txheem tom ntej.

Yog li ntawd, thaum optimizing lubPolyaluminium Chloride (PAC)dosing scheme, coagulation efficiency thiab residual txhuas tswj yuav tsum sib npaug ib txhij.

Raws li Lub Koom Haum Saib Xyuas Kev Noj Qab Haus Huv Ntiaj Teb (WHO) cov lus qhia, cov lus qhia tus nqi rau cov khoom seem hauv cov dej haus yog:

0.1-0.2 mg / L

Yog li ntawd, nyob rau hauv cov dej purification tej yaam num, ntxiv rau kev saib xyuas rau turbidity, lub residual txhuas index yuav tsum tau soj ntsuam synchronously.

Yuav Ua Li Cas Txo Cov Khoom Txhuas Txhuas Tom Qab PAC Kev Kho Mob?

Kev paub txog kev tsim vaj tsev ua yeeb yam qhia tau tias ntev npaum li cov hauv qab no tseem ceeb tswj tau zoo, cov khoom seem ntawm txhuas feem ntau tuaj yeem khaws cia rau theem qis.

Ib qho, Tswj PAC Kev Ua Haujlwm Hauv Qhov Zoo Tshaj Plaws pH

Lub qhov rais ua haujlwm tsim nyog tshaj plaws rau PAC tseem nyob:

pH ntawm 6.0-8.0

Hauv qhov xwm txheej no:

Aluminium-hydroxyl polymers ua tiav tag nrho;

Aluminium hydroxide nag lossis daus yog ua tiav ntau dua;

Floc daws qhov nrawm nrawm dua;

Cov ntsiab lus aluminium residual yog qis tshaj.

Yog li ntawd, kev tswj hwm pH kom ruaj khov yog qhov tseem ceeb tshaj qhov tsuas yog nce PAC ntau npaum li cas.

Rau cov dej haus kev kho mob, nws raug nquahu kom tswj kev khiav hauj lwm ntau ntawm 6.5 thiab 7.5, uas yog qhov tsim nyog rau kev ua kom tau raws li qhov yuav tsum tau ua kom zoo.

Qhov thib ob, Tsis txhob noj PAC ntau dhau

Ntau tus neeg ua haujlwm hauv tsev ntseeg tias:

Qhov ntau PAC ntxiv, qhov zoo dua cov nyhuv coagulation.

Qhov tseeb, qhov no tsis yog qhov xwm txheej.

Yog tias PAC dosing tshaj qhov xav tau tiag tiag, cov txhuas ntau dhau yuav tsis tuaj yeem koom nrog hauv flocculation tab sis kuj tseem yuav nyob twj ywm hauv dej hauv cov ntaub ntawv xws li:

$Al^3+}$

$Al(OH)_4^-$

Qhov no tsis tsuas yog nce nqi khiav hauj lwm tab sis kuj yooj yim elevates lub concentration ntawm residual txhuas nyob rau hauv cov dej kho.

Yog li, PAC ntau npaum li cas yuav tsum tau ua kom zoo tsis tu ncua los ntawm kev xeem lub thawv (Jar Test) lossis cov ntaub ntawv ua haujlwm ntawm qhov chaw kom ua tiav kev lag luam zoo.

Peb, Ua kom muaj kev cuam tshuam sedimentation thiab lim

Txawm hais tias PAC tau tsim ntau tus flocs, yog tias tom ntej sedimentation tank lossis filtration system ua haujlwm tsis ruaj khov, qee qhov txhuas -muaj flocs tseem yuav ploj nrog cov dej ntws tawm.

Yog li, ua tiav PAC kev kho mob yuav tsum xyuas kom meej:

Flocculation txaus;

Ua tiav kev daws teeb meem;

ruaj khov filtration;

Sijhawm tawm ntawm sludge.

Tsuas yog thaum tag nrho cov txheej txheem ua haujlwm ua haujlwm sib koom tes tuaj yeem ua kom cov coagulation zoo ntawm PAC tau ua tiav tag nrho thaum tswj tau cov txhuas seem.

Vim li cas thiaj li Aluminium Residual nce tom qab deviating los ntawm qhov zoo tshaj pH?

Muaj ntau txoj haujlwm kho dej khib nyiab pom tias:

Txawm hais tias cov dej turbidity tau txo qis, cov txiaj ntsig kev sim qhia tau tias cov txhuas seem nyob rau sab siab dua.

Qhov no feem ntau cuam tshuam nrog kev tswj pH.

Thaum lub kaw lus ua haujlwm nyob rau hauv cov kab hauv qab no:

pH <6.0los yogpH> 9.0

Lub solubility ntawm aluminium compounds nce ntau.

Txawm hais tias kev soj ntsuam pom pom tau hais tias cov nyhuv flocculation tau txais, ib feem ntawm cov txhuas tseem nyob hauv lub xeev yaj thiab tsis tuaj yeem raug tshem tawm tag nrho los ntawm sedimentation, ua rau cov seem ntawm txhuas nce siab.

Tshwj xeeb tshaj yog rau kev kho dej haus, qhov xwm txheej no tsim nyog tau txais kev saib xyuas ntau dua.

Yog li ntawd, thaum ua dej haus PAC coagulation kev kho mob, kev cia siab rau turbidity los txiav txim kev ua hauj lwm tsis txaus; nws yuav tsum tau ua ke nrog cov residual txhuas kuaj kom ua tau zoo tshaj plaws PAC ntau npaum thiab pH tswj.

Kev pom zoo los ntawm ECOLINK TECHNOLOGY

Ua ke nrog kev paub dhau los hauv dej haus, dej khib nyiab hauv nroog, thiab cov dej khib nyiab hauv kev lag luam, ECOLINK TECHNOLOGY pom zoo tias cov tuam txhab tsom mus rau cov haujlwm hauv qab no thaum lub sijhawm PAC kev ua haujlwm zoo tshaj plaws:

Ua ntej lees paub seb puas muaj pH muaj txiaj ntsig nyob rau hauv qhov kev pom zoo ntau dua li qhov muag tsis pom kev nce PAC ntau npaum li cas;

Nws raug nquahu kom tsim kom muaj kev saib xyuas pH hauv online kom nkag siab cov dej hloov pauv raws sijhawm;

Rau cov dej khib nyiab hauv kev lag luam nrog cov dej loj hloov pauv, kev siv lub tshuab pH tsis siv neeg tuaj yeem txhim kho kev ua haujlwm ruaj khov;

Ua cov kev xeem lub thawv tsis tu ncua (Lub thawv Test) txhawm rau txhim kho PAC ntau npaum li cas thiab zam cov tshuaj khib nyiab;

Synchronously saib xyuas turbidity, residual txhuas, thiab sludge daws kev ua tau zoo kom ua tiav qhov sib npaug ntawm cov teebmeem coagulation thiab cov nqi khiav haujlwm.

Los ntawm kev tswj hwm pH thiab cov qauv PAC daim ntawv thov, kev siv tshuaj lom neeg tuaj yeem txo qis, kev pheej hmoo ua haujlwm txo qis, thiab cov txiaj ntsig kev lag luam ntawm tag nrho cov dej kho dej tau txhim kho thaum ua kom muaj kev kho mob.

Cov lus nug nquag nug (FAQ)

Cov dej nyoos pH yog 8.5. Puas yog nws yuav tsum tau kho nws ua ntej noj Polyaluminum Chloride (PAC)?

Tsis tas li.

Raws li ib txwm muaj, Polyaluminium Chloride (PAC) tseem tuaj yeem tswj cov coagulation zoo hauv qab pH 9.0. Thaum cov dej nyoos pH nyob ib ncig ntawm 8.5, lub kaw lus feem ntau tso siab rau lub cheb flocculation mechanism kom tshem tawm cov khoom uas raug tshem tawm, yog li cov kev kho mob zoo tseem tuaj yeem ua tiav rau feem ntau cov dej khib nyiab hauv nroog, cov dej khib nyiab hauv nroog, thiab kev tshem tawm turbidity.

Yog tias qhov kev ntsuam xyuas hauv tsev qhia tau tias:

Cov dej turbidity ruaj khov;

Floc tsim tau zoo;

PAC ntau npaum yog tsim nyog;

Cov nqi tshuaj yog tswj tau;

Tom qab ntawd cais pH hloov feem ntau tsis tas yuav tsum tau.

Txawm li cas los xij, rau cov haujlwm kho dej haus, nws raug nquahu kom sim ib txhij kuaj seb puas muaj cov txhuas seem hauv cov dej kho tau raws li cov qauv tsim ua ntej txiav txim siab seb puas yuav ua kom zoo dua qhov kev ua haujlwm.

Puas yuav Polyaluminium Chloride (PAC) hloov pH ntawm lub cev dej kho?

Yog lawm, tab sis qhov hloov pauv feem ntau me me.

PAC nws tus kheej yog cov khoom siv acidic, thiab nws 1% aqueous tov muaj pH ntawm kwv yees li 3.5-5.0.

Raws li kev siv tshuaj ib txwm muaj, PAC hydrolysis cov tshuaj tiv thaiv siv ib feem ntawm alkalinity, yog li pH ntawm cov dej kho lub cev yuav poob me ntsis.

Rau ntau npaum li cas:

10-50 mg/L

Feem ntau, pH ntawm cov dej kho lub cev poob los ntawm:

0.1-0.5 pH units

Rau cov dej saum npoo ntuj uas muaj alkalinity siab, qhov kev hloov no feem ntau tsis cuam tshuam rau kev ua haujlwm.

Txawm li cas los xij, rau cov dej alkalinity qis lossis qee cov dej khib nyiab hauv kev lag luam, cov pH hloov thaum lub sijhawm ua haujlwm yuav tsum tau saib xyuas tas li, thiab alkalinity yuav tsum tau muab ntxiv kom tsim nyog raws li qhov xwm txheej tiag tiag los xyuas kom meej tias PAC ib txwm tswj kev ua haujlwm zoo coagulation.

Cov dej khib nyiab tuaj yeem nrog pH ntawm 10 ncaj qha nrog PAC?

Tsis muaj.

Thaum cov dej khib nyiab pH nce mus txog 10, feem ntau aluminium ions twb tau hloov mus rau qhov tsis zoo $Al(OH)_4^-$ (aluminate).

Nyob rau hauv lub xeev no, coagulation zoo yuav tsis ua kom tiav.

Yog li, yog tias Polyaluminium Chloride (PAC) raug ntxiv ncaj qha:

Kev siv PAC poob qis heev;

Flocs yog qhov nyuaj rau tsim;

Kev siv tshuaj lom neeg nce ntxiv;

Cov kua dej ruaj khov txo qis.

Qhov kev coj ua tiag tiag yog:

Ua ntej, siv cov kua qaub los kho cov dej khib nyiab rau ntawm 8.0 thiab 9.0, thiab tom qab ntawd ua PAC coagulation kev kho mob.

Qhov kev ua haujlwm no tuaj yeem kho qhov pom kev zoo rau PAC, txhim kho coagulation efficiency, thiab ib txhij txo cov tshuaj pov tseg.

Yuav ua li cas txhawm rau txhim kho PAC Coagulation Treatment Effects?

Hauv ntau txoj haujlwm kho dej, thaum kho kev ua haujlwm poob qis, cov neeg ua haujlwm thawj zaug xav txog kev nce qib PAC.

Qhov tseeb, los ntawm kev coj ua engineering, feem ntau PAC cov teeb meem kev ua haujlwm tsis yog los ntawm cov khoom nws tus kheej tab sis vim tias kev ua haujlwm tsis raug tswj tau zoo, cov kev tswj hwm pH feem ntau yog qhov muaj feem cuam tshuam.

Nws raug pom zoo tias cov tuam txhab ua haujlwm ua kom zoo dua qub raws li cov hauv qab no:

1. Ua ntej kuaj xyuas seb pH puas nyob hauv qhov pom zoo

Lub qhov rais ua haujlwm zoo rau PAC feem ntau yog:

Cov dej khib nyiab feem ntau: 6.0-8.5

Kev kho dej haus: 6.5-7.5

Acid mine kua: 7.0-8.5 (tom qab neutralization)

Tsuas yog nyob rau hauv ib qho chaw pH uas tsim nyog tuaj yeem ua rau PAC tag nrho nws cov nqi nruab nrab thiab cheb flocculation cuam tshuam.

2. Sij hawm kho cov kev ua haujlwm raws li kev hloov pauv dej tsis zoo

Lub caij sib txawv, kev hloov pauv ntau lawm, thiab cov txheej txheem sib txawv yuav ua rau muaj kev hloov pauv ntawm cov dej.

Cov lus pom zoo:

Tsim kom muaj kev saib xyuas pH online;

Ua Kev Xeem Lub Thawv tsis tu ncua (cov ntawv xeem lub thawv);

Txhim kho PAC ntau npaum li cas dej zoo;

Txheeb xyuas cov txiaj ntsig ua haujlwm tau zoo los ntawm kev sib xyaw turbidity, daws qhov nrawm, thiab kev ua haujlwm sludge.

Txoj kev tswj kev tswj kom muaj zog no yog kev tshawb fawb ntau dua li kev siv tshuaj ruaj khov thiab ua kom zoo dua qub nrog kev txhim kho cov txheej txheem kev kho dej niaj hnub.

3. Tsim kom muaj kev txawj ntse PAC Dosing Management System

Rau loj - cov tuam txhab lag luam loj thiab cov chaw kho dej tsis tu ncua, cov hauv qab no tuaj yeem teeb tsa:

Online pH saib xyuas qhov system;

Tsis siv neeg kua qaub- hauv paus kev tswj hwm;

PAC tsis siv neeg dosing khoom;

PLC ntse tswj qhov system.

Tsis siv neeg tswj tsis tau tsuas yog ua kom ruaj khov PAC cov txiaj ntsig kev kho mob tab sis kuj txo qis kev cuam tshuam ntawm phau ntawv, txhim kho cov cuab yeej ua haujlwm tau zoo, thiab txo qis - cov nqi khiav haujlwm ntev.

Raws li tus kws tshaj lij kev kho dej kev daws teeb meem, ECOLINK TECHNOLOGY tuaj yeem muab PAC cov khoom xaiv, kev tsim qauv tshuaj, tshuaj ntsuam xyuas lub thawv, thiab cov txheej txheem kev pom zoo rau ntau lub teb chaws thiab kev lag luam raws li cov neeg siv khoom cov dej zoo, pab cov neeg siv khoom ua haujlwm tau zoo thiab ruaj khov dej.

Xaus: Tswj pH kom zoo kom ua tiav qhov kev ua tau zoo ntawm Polyaluminum Chloride (PAC)

Rau txhua qhov system sivPolyaluminium Chloride (PAC)rau kev kho coagulation, pH tseem yog qhov tseem ceeb tshaj plaws thiab yooj yim tswj kev ua haujlwm tsis zoo cuam tshuam rau kev kho mob.

Thaum lub kaw lus tswj hwm nyob rau hauv qhov pom zoo pH, cov hauv qab no tuaj yeem ua tiav:

Txhim kho coagulation efficiency;

Txo cov koob tshuaj PAC;

Txhim kho floc zoo;

Lowered residual aluminium cov ntsiab lus;

Stabilized effluent dej zoo;

Txo cov nqi khiav lag luam tag nrho.

Hloov pauv, yog tias kev tswj hwm pH tsis saib xyuas, txawm tias nce PAC ntau npaum li cas tsis tuaj yeem them nyiaj rau qhov cuam tshuam los ntawm kev poob qis hauv coagulation efficiency.

Yog li, thaum muaj kev hloov pauv hauv PAC kev kho mob tshwm sim, nws raug nquahu kom kuaj xyuas pH ua ntej es tsis txhob siv tshuaj tua kab mob tam sim lossis hloov cov khoom.

Nrog kev nplua nuj thoob ntiaj teb qhov project, ECOLINK TECHNOLOGY tsis tu ncua muab siab - zooPolyaluminium Chloride (PAC)Cov khoom lag luam thiab kev txhawb nqa kev tshaj lij thoob ntiaj teb cov dej hauv nroog, kev kho dej khib nyiab, kev tswj xyuas dej khib nyiab, textile printing thiab dyeing, kev ua zaub mov, thiab kev lag luam.

Yog tias koj tab tom nrhiav PAC kev daws teeb meem tsim nyog rau koj qhov project, txais tos hu rau peb pab neeg ua haujlwm. Peb yuav muab kev sib tham pub dawb, cov lus pom zoo rau kev tsom xam dej, thiab cov txheej txheem xaiv cov khoom hauv 24 teev los pab koj txhim kho kev kho dej kom zoo thiab txo cov nqi ua haujlwm.