Dicyandiamide formaldehyde resin decoloring tus neeg sawv cev

Ntawm cov kev kho dej khib nyiab hauv kev lag luam, luam ntawv thiab dyeing cov dej khib nyiab yog ib qho nyuaj-rau-kho cov dej khib nyiab. Nws muaj complex muaj pes tsawg leeg, siab chroma tus nqi, siab concentration, thiab yog ib qho nyuaj rau degrade. Nws yog ib qho tseem ceeb tshaj plaws thiab nyuaj-kho cov dej khib nyiab uas ua rau ib puag ncig. Kev tshem tawm ntawm chroma yog qhov nyuaj dua ntawm cov teeb meem.

Ntawm ntau txoj kev luam ntawv thiab dyeing dej khib nyiab, kev siv coagulation yog txoj kev siv dav tshaj plaws hauv kev lag luam. Tam sim no, cov pa flocculants siv nyob rau hauv textile printing thiab dyeing lag luam nyob rau hauv kuv lub teb chaws yog txhuas-raws li thiab hlau-based flocculants. Cov nyhuv decolorization tsis zoo, thiab yog tias cov xim reactive yog decolorized, yuav luag tsis muaj cov nyhuv decolorization, thiab tseem yuav muaj cov hlau ions hauv cov dej kho, uas tseem muaj teeb meem rau tib neeg lub cev thiab ib puag ncig ib puag ncig.

Dicyandiamide formaldehyde resin decoloring tus neeg sawv cev yog cov organic polymer flocculant, quaternary ammonium ntsev hom. Piv nrog rau cov tsoos decolorizing flocculants, nws muaj qhov ceev flocculation ceev, tsawg npaum li cas, thiab cuam tshuam los ntawm coexisting ntsev, PH thiab qhov zoo xws li kev cuam tshuam ntawm qhov kub thiab txias.

Lub dicyandiamide formaldehyde resin decoloring tus neeg sawv cev yog flocculant tsuas yog siv rau decolorization thiab COD tshem tawm. Thaum siv nws, nws raug nquahu kom kho tus nqi pH ntawm cov dej khib nyiab kom tsis txhob muaj. Thov sib tham nrog cov kws tshaj lij rau cov kev siv tshwj xeeb. Raws li kev koom tes ntau Cov lus teb los ntawm kev luam ntawv thiab dyeing manufacturers yog tias dicyandiamide formaldehyde resin decolorizer muaj qhov cuam tshuam loj rau kev decolorization ntawm luam ntawv thiab dyeing cov dej khib nyiab. Qhov kev tshem tawm chroma tuaj yeem ncav cuag ntau dua 96%, thiab qhov kev tshem tawm ntawm COD kuj tau mus txog ntau dua 70%.

Organic polymer flocculants tau siv thawj zaug hauv xyoo 1950, feem ntau yog polyacrylamide dej kho flocculants, thiab polyacrylamide tuaj yeem muab faib ua non-ionic, anionic, thiab cationic. Hauv tsab xov xwm no, peb yuav nkag siab txog acrylamide polymer dicyandiamide formaldehyde resin decolorizing flocculant uas yog salted nrog quaternary amine ntawm cationic organic polymer flocculants.

Lub dicyandiamide formaldehyde resin decolorizing flocculant yog thawj zaug tshwm sim nrog acrylamide thiab formaldehyde aqueous tov nyob rau hauv alkaline tej yam kev mob, ces reacted nrog dimethylamine, thiab ces txias thiab quaternized nrog hydrochloric acid. Cov khoom yog concentrated los ntawm evaporation thiab lim kom tau quaternized acrylamide monomer.

Lub dicyandiamide-formaldehyde condensation polymer decolorizing flocculant tau qhia hauv xyoo 1990. Nws muaj qhov tshwj xeeb zoo heev ntawm kev tshem tawm cov xim ntawm cov dej khib nyiab. Hauv kev kho cov dej khib nyiab uas muaj xim siab thiab muaj kuab paug siab, tsuas yog siv polyacrylamide lossis polyacrylamide. Polyaluminium chloride flocculant tsis tuaj yeem tshem tawm cov xim tag nrho, thiab tom qab ntxiv cov decolorizing flocculant, nws neutralizes tus nqi tsis zoo uas txuas nrog cov xim molecules hauv cov dej khib nyiab los ntawm kev muab ntau cov cations thiab yog li destabilizes thaum kawg, ntau tus floccules raug tsim, uas. tuaj yeem nqus cov xim molecules tom qab flocculation thiab destabilization, thiaj li ua tiav lub hom phiaj ntawm decolorization.

Yuav siv li cas decolorizer:

Txoj kev siv decolorizing flocculant zoo ib yam li polyacrylamide. Txawm hais tias yav dhau los yog kua, nws yuav tsum tau diluted ua ntej nws tuaj yeem siv tau. Cov chaw tsim tshuaj paus pom zoo tias nws yuav tsum tau diluted los ntawm 10% -50%, thiab ces ntxiv rau cov dej khib nyiab thiab tag nrho stirred. Form alum paj. Cov xim muaj xim nyob rau hauv cov xim dej khib nyiab yog flocculated thiab precipitated tawm ntawm cov dej, thiab yog nruab nrog sedimentation los yog huab cua flotation kom tiav kev sib cais.

Hauv kev luam ntawv thiab dyeing, textile thiab lwm yam kev lag luam, kev siv dej ntau heev thiab rov siv dua tus nqi tsawg. Yog li ntawd, kev pov tseg ntawm cov khoom siv dej muaj ntau heev. Yog tias cov txheej txheem siv los ua cov kev kho mob siab heev thiab rov ua dua tshiab ntawm cov xim zoo nkauj thiab cov dej khib nyiab siab, tsis tsuas yog nws tuaj yeem txuag tau ntau cov dej tshiab, tab sis nws tuaj yeem ncaj qha txo cov paug tawm ntawm cov dej khib nyiab, uas yog. ntawm qhov tseem ceeb thiab qhov tseem ceeb tshaj plaws rau kev txhawb nqa kev tsim kho kom ruaj khov ntawm kev luam ntawv, dyeing thiab textile kev lag luam.

Tshaj tawm los ntawm Kev Muag Khoom Yooj Yim.