Muaj ntau ntau yam ntawm ion pauv resins, uas muaj cov haujlwm sib txawv thiab cov khoom siv vim muaj cov tshuaj sib txawv thiab cov qauv, thiab tsim nyog rau ntau lub hom phiaj. Yam tsim nyog thiab ntau yam ntawm daim ntawv thov resins yuav tsum raug xaiv raws li cov txheej txheem thiab cov khoom siv.
Feem ntau, cov ntsiab lus hauv qab no yuav tsum tau them sai sai rau thaum siv:
1.Cov ion txauv resin muaj qee qhov dej thiab yuav tsum tsis txhob muab cia rau hauv qhov chaw qhib. Nws yuav tsum tau khaws cia noo thaum khaws cia thiab kev thauj mus los kom tsis txhob muaj cua qhuav thiab lub cev qhuav dej, uas yuav ua rau cov resin tawg. Yog hais tias cov resin dehydrated thaum lub sij hawm cia, nws yuav tsum tau soaked nyob rau hauv concentrated dej ntsev (10 feem pua) ua ntej. Tom qab ntawd maj mam dilute nws, tsis txhob tso ncaj qha rau hauv dej, thiaj li tiv thaiv cov resin los ntawm kev nthuav dav thiab tawg.
2. Thaum lub sijhawm khaws cia thiab kev thauj mus los rau lub caij ntuj no, nws yuav tsum tau khaws cia rau hauv qhov chaw sov ntawm 5-40 degree kom tsis txhob overcooling lossis overheating, uas yuav cuam tshuam rau qhov zoo. Yog tias tsis muaj cov khoom siv rwb thaiv tsev nyob rau lub caij ntuj no, cov resin tuaj yeem khaws cia hauv dej ntsev. Qhov concentration ntawm cov dej ntsev tuaj yeem hloov kho raws li qhov kub thiab txias. Nyob ntawm.
3. Cov khoom lag luam ntawm ion txauv resins feem ntau muaj me me ntawm cov polymers tsawg thiab cov monomers tsis muaj kev cuam tshuam, nrog rau cov khoom tsis zoo xws li hlau, txhuas, tooj liab, thiab lwm yam. Thaum cov resin sib cuag nrog dej, kua qaub, alkali lossis lwm yam kev daws teeb meem. , saum toj no Cov tshuaj yuav raug xa mus rau hauv cov tshuaj thiab cuam tshuam rau qhov zoo ntawm cov effluent. Yog li ntawd, cov resin tshiab yuav tsum tau pretreated ua ntej siv. Feem ntau, cov resin tau nthuav dav nrog dej. Tom qab ntawd, cov inorganic impurities (feem ntau yog cov hlau sib txuas) tuaj yeem siv rau 4-5 feem pua dilute hydrochloric acid kom tshem tawm, cov organic impurities tuaj yeem raug tshem tawm nrog 2-4 feem pua dilute sodium hydroxide tov, thiab ntxuav kom txog thaum yuav luag nruab nrab. Yog tias siv rau hauv kev npaj tshuaj, nws yuav tsum tau soaked hauv ethanol.
4. Thaum lub sij hawm siv cov resin, tsis txhob sib cuag nrog hlau (xws li hlau, tooj liab, thiab lwm yam.) cov roj stains, organic molecular microorganisms, muaj zog oxidants, thiab lwm yam, thiaj li tsis txhob txo cov ion pauv peev xwm los yog txawm poob nws txoj haujlwm. . Kev kho kom ua kom muaj zog, txoj kev ua kom muaj peev xwm txiav txim siab raws li qhov xwm txheej thiab cov xwm txheej. Feem ntau, cation resin raug rau Fe muaj kuab paug thaum muag muag. Nws tuaj yeem soaked hauv hydrochloric acid, thiab maj mam diluted. Lub anion resin yog raug rau cov organic kuab paug. 10 feem pua NaC1 ntxiv rau 2-5 feem pua NaOH tuaj yeem siv Cov tshuaj sib xyaw ua ke tuaj yeem tsau lossis yaug. Yog tias tsim nyog, nws tuaj yeem tsau rau hauv 1 feem pua ntawm hydrogen peroxide tov rau ob peb feeb. Lwm tus kuj tuaj yeem kho los ntawm kev hloov pauv ntawm cov kua qaub, tshuaj dawb, cawv thiab ntau yam kev ua kom tsis muaj menyuam.
5. Pretreatment of new resins: Cov khoom lag luam ntawm ion exchange resins feem ntau muaj me me ntawm oligomers thiab unreacted monomers, nrog rau inorganic impurities xws li hlau, txhuas, thiab tooj liab. Thaum cov resin nyob rau hauv kev sib cuag nrog dej, kua qaub, alkali los yog lwm yam kev daws, cov saum toj no tshuaj yuav raug xa mus rau hauv cov tshuaj thiab cuam tshuam qhov zoo ntawm cov effluent. Yog li ntawd, cov resins tshiab yuav tsum tau pretreated ua ntej siv. Feem ntau, cov resin yog swelled nrog dej ua ntej, thiab tom qab ntawd cov impurities inorganic (tsuas yog hlau tebchaw) yuav raug tshem tawm nrog 4-5 feem pua dilute hydrochloric acid, thiab cov organic impurities yuav raug tshem tawm nrog 2-4 feem pua dilute sodium hydroxide tov thiab ntxuav kom ze rau nruab nrab
