Thaum ua kev sim rau kev npaj ntawm inorganic coagulant polyferric sulfate thiab cov nyhuv ntawm cov dej phwj tuaj hauv chav kuaj, cov theem sim tom qab hydrolysis ntawm polyferric sulfate muaj raws li nram no:
1. Fe2+ kev tshawb pom hauv cov khoom polymer ferric sulfate
Siv 5mL polyferric tov, ntxiv rau 250mL Erlenmeyer lub khob dej, dilute rau 100 ~ 150mL, ntxiv 10mL sulfur-phosphorus tov kua qaub, ntxiv 5 ~ 8 tee ntawm sodium diphenylamine sulfonate tov tom qab txias, thiab titrate nrog K2Cr2O7 tus qauv daws kom ruaj khov xim Cov.
2. Kev kuaj pom ntawm alkalinity
a. Siv lub raj xa dej los coj 1.00 mL ntawm cov tshuaj polyferric thiab muab tso rau hauv 250 mL conical flask
b. Siv cov raj xa dej kom yog cov raj dej kom yog 25.00 mL ntawm hydrochloric acid, tom qab ntawd ntxiv 20 mL ntawm CO2 tsis muaj dej distilled thiab co zoo, npog nrog daim iav saib, thiab muab tso rau qhov chaw sov li 10 feeb.
c. Ntxiv 10mL potassium fluoride tov thiab co kom zoo. Ntxiv ob ntxiv tee ntawm phenolphthalein, thiab tam sim ntawd them ib feem nrog sodium hydroxide txheem tov rau lub teeb liab raws li qhov kawg taw tes. (Los yog feem pua rau pH tus nqi ntawm 9.0 ~ 9.5) d. Siv dej distilled tsis muaj CO2 los ua kev ntsuam xyuas dawb thiab rov hais dua saum toj no.
Yuav ua li cas siv polyferric sulfate hauv kev tsim khoom thiab lub neej txhua hnub:
Thaum siv, kua polymeric ferric sulfate feem ntau tau tsim rau hauv 10% -50% aqueous tov (nws tuaj yeem ncaj qha ntxiv thaum lub qhov dej muaj qhov dej siab), thiab cov khoom zoo polymeric ferric sulfate yog tsim rau hauv 10% -30% aqueous kev daws. Raws li qhov xwm txheej tshwj xeeb, muab cov kev npaj daws teeb meem raws li cov kev mob zoo tshaj plaws thiab siv ntau npaum li cas, thiab cov txiaj ntsig coagulation zoo tuaj yeem tau txais tom qab puv puv.
Qhov ntau npaum li cas tuaj yeem txiav txim siab raws li qhov sib txawv ntawm qhov dej qhuav kom txiav txim siab qhov zoo tshaj plaws. Rau cov dej turbidity feem ntau (ua kom dej khov ntawm 100-500mg / L) dej, siv 30-50 kg ntawm cov khoom no ib txhiab tons, cov dej tsis muaj dej haus muaj qhov siab turbidity muaj khib nyiab tuaj yeem tsim nyog Dosing npaum li cas.
Thaum kho cov dej tsis huv hauv lub cev, dilute thawj-chav polymer ferric sulfate rau 1-2 zaug ntawm cov tshuaj aqueous. Thaum qhov chaw dej siab yog siab thiab cov dej ntim kho tau loj, nws tuaj yeem ncaj qha ntxiv. Tom qab ntawd, raws li kev soj ntsuam cov kev sim hauv chav sim, dosing raws li cov txheej txheem ua haujlwm zoo tshaj plaws thiab muab cov tshuaj, tom qab puv nplawm, coagulation thiab sedimentation, ntshiab effluent tuaj yeem tau txais.
Qhov dej ua kom dej tsob nroj kuj tseem tuaj yeem ntxiv tom qab diluting 2-5 zaug. Qhov ntau npaum li cas yog txiav txim siab raws li qhov xwm ntawm cov dej nyoos los ntawm kev tsim tawm debugging lossis beaker xyaum ua raws li tus nqi tsim nyog ntawm alum tsim. Cov nroj tsuag dej tuaj yeem siv lwm txoj kev siv tshuaj raws li kev siv. Raws li cov xwm txheej ib txwm, qhov ntau npaum ntawm cov khoom no thiab cov khoom lag luam polyaluminium chloride Nws yog ntxhib sib luag, 1 / 2-1 / 3 ntawm tus nqi ntawm cov khoom haum aluminium sulfate. Yog tias cov khoom siv ua kua thawj yog siv, nws tuaj yeem txiav txim siab raws li qhov kev nkag siab ntawm tus neeg saib xyuas sib piv, ntxhib raws li qhov hnyav piv ntawm 1: 3.
Ntau ntau cov kev coj ua tau ua pov thawj tias zoo tib yam polyferric sulfate tuaj yeem nyuaj lub hom phiaj uas xav tau nyob rau hauv Feem ntau. Nyob rau hauv ib txwm muaj xwm txheej, nws yog qhov yuav tsum tau ua qhov kev txiav txim siab xaiv cov ntawv pov thawj raws li qhov nruab nrab thiab qhov chaw ntawm kev siv los txiav txim qhov tsim nyog 23 Qian SC thov siv science thiab technology dosage form thiab pib siv ua ntej industrialization. Ntsuas kev ntsuas kom txiav txim siab qhov chaw noj tshuaj zoo tshaj plaws thiab qhov chaw noj tshuaj zoo tshaj plaws. Txhawm rau kom yooj yim nthuav txuas ntxiv ntawm daim ntawv thov cov kab ntau ntawm polyferric sulfate hauv kev tsuas thiab kev tua hlau.