Ukuprinta kunye nokudaya izixhobo zokucocwa kwamanzi amdaka

Ukuprinta kunye nokudaya izixhobo zokucocwa kwamanzi amdakaubukhulu becala yenzelwe kwaye iphuhliselwe ukuprinta kunye nokudaya amanzi amdaka kunye chromaticity eliphezulu kunye nobunzima decolorization, kunye COD eliphezulu, nto leyo enokusombulula ngempumelelo iingxaki zobugcisa kwinkqubo yangaphambili yoshicilelo kunye nokudaya unyango lwamanzi amdaka.Amanzi amdaka ashicilelweyo kunye nokudaya angakhutshelwa ukuya kumgangatho oqhelekileyo emva konyango.

Umgangatho wamanzi wokuprinta kunye nokudaya amanzi amdaka uyahluka ngokuxhomekeke kuhlobo lwefayibha esetyenzisiweyo kunye neteknoloji yokucubungula, kwaye izinto ezingcolisayo ziyahluka kakhulu.Ukuprinta kunye nokudaya amanzi amdaka ngokubanzi aneempawu zokuxinana okuphezulu kongcoliseko, iintlobo ezininzi, izinto eziyityhefu neziyingozi, kunye nechromaticity ephezulu.Ngokuqhelekileyo, ixabiso le-pH lokuprinta kunye nokudaya amanzi amdaka yi-6-10, i-CODCr yi-400-1000mg / L, i-BOD5 yi-100-400mg / L, i-SS yi-100-200mg / L, kwaye i-chromaticity yi-100-400 amaxesha.

Kodwa xa inkqubo yokushicilela kunye nokudaya, iintlobo zemicu esetyenzisiweyo, kunye neteknoloji yokulungisa itshintsha, umgangatho wogutyulo uya kuba notshintsho olukhulu.Kwiminyaka yakutshanje, ngenxa yophuhliso lwamalaphu eekhemikhali zefayibha, ukunyuka kwesilika yokuxelisa, kunye nokuqhubela phambili kokudaya kunye nokugqiba iteknoloji, inani elikhulu lobunzima bokunciphisa iikhompawundi zezinto eziphilayo ezifana nobukhulu bePVA, i-alkali hydrolysates yesilika eyenziweyo (ingakumbi i-phthalates. ), kunye nezongezelelo ezitsha ziye zangena ekushicileleni nasekudayeni amanzi amdaka.I-CODCr yoxinaniso iye yanda ukusuka kumakhulu mg / L ukuya kwi-2000-3000mg / L, i-BOD5 iye yanda ngaphezu kwe-800mg / L, kwaye ixabiso le-pH lifikelele kwi-11.5-12, Oku kunciphisa izinga lokususa i-CODCr yonyango lwangaphambili lwe-biological. inkqubo ukusuka 70% ukuya malunga 50%, okanye nangaphantsi.

Isixa sokwenza amanzi amdaka ekushicileleni nasekudayeni amanzi amdaka sincinci ngokwentelekiso, kodwa ingxinano yezingcolisi iphezulu, equlathe ubukhulu obahlukeneyo, iimveliso zokubola, iitshiphusi zefiber, isitashi sealkali, kunye nezinye izongezo ezahlukeneyo.Amanzi amdaka ane-alkaline enexabiso le-pH elimalunga ne-12. Amanzi amdaka afunwayo anesitatshi njengesona sixhobo sokulinganisa (njengelaphu lomqhaphu) anexabiso eliphezulu le-COD kunye ne-BOD kunye nokonakaliswa kwezinto eziphilayo.Amanzi asetyenzisiweyo amdaka ane-polyvinyl alcohol (PVA) njengeyona arhente yokulinganisa (efana nomsonto womqhaphu wepolyester) ane-COD ephezulu kunye ne-BOD ephantsi, kwaye ukonakaliswa kwezinto eziphilayo zamanzi amdaka akulunganga.

Ukuprinta kunye nokudaya amanzi amdaka anomthamo omkhulu wamanzi amdaka abilayo kunye noxinzelelo oluphezulu lwezinto ezingcolisayo, kubandakanya i-cellulose, i-citric acid, i-wax, i-oyile, i-alkali, i-surfactants, i-nitrogen-containing compounds, njl. umbala omdaka.

Ukuprinta kunye nokudaya amanzi amdaka anomthamo omkhulu wamanzi amdaka amdaka, kodwa ungcoliseko lulula ngokwentelekiso, oluqulethe ii-agent ezishiyekileyo zokucoca, iimali ezincinci ze-acetic acid, i-oxalic acid, i-sodium thiosulfate, njl.

Ukuprintwa kunye nokudaya amanzi amdaka amdaka emercerizing anomxholo ophezulu wealkali, kunye nomxholo weNaOH osuka kwi-3% ukuya kwi-5%.Uninzi lwezityalo eziprintayo kunye nokudaya zibuyisela i-NaOH ngokuba ngumphunga kunye nokuxinana, ngoko ke amanzi amdaka e-mercerizing awafane akhutshwe.Emva kokusetyenziswa ngokuphindaphindiweyo, amanzi amdaka okugqibela akhutshiweyo asene-alkaline ephezulu, ene-BOD ephezulu, i-COD, kunye ne-SS.

Ubungakanani bokudaya amanzi amdaka ekushicileleni nasekudayeni bukhulu kakhulu, kwaye umgangatho wamanzi uyahluka ngokuxhomekeke kwiidayi ezisetyenzisiweyo.Iqulethe i-slurries, idayi, izongezo, i-surfactants, njl., kwaye iyomelele ngokubanzi ialkaline kunye ne-chromaticity ephezulu.I-COD iphezulu kakhulu kune-BOD, kwaye i-biodegradability yayo imbi.

Ubungakanani bokushicilela kunye nokudaya amanzi amdaka bukhulu kakhulu.Ukongeza kumanzi amdaka avela kwinkqubo yoshicilelo, ikwabandakanya isepha kunye namanzi okuhlamba amanzi amdaka emva kokushicilela.Ukuxinwa kwezinto ezingcolileyo kuphezulu, kubandakanywa i-slurry, idayi, izongezo, njl., kunye ne-BOD kunye ne-COD zonke ziphezulu.

Ubungakanani bamanzi amdaka aphuma ekushicileleni nasekudayeni unyango lwamanzi amdaka lincinci ngokwentelekiso, eliqulathe iifiber chips, iiresin, ii-oyile, kunye neslurries.

Ukuprintwa kunye nokudaya amanzi amdaka okucutha amanzi amdaka ealkali aveliswa kwinkqubo yokunciphisa i-alkali yesilika yokuxelisa i-polyester, ikakhulu iqulethe i-polyester hydrolysates efana ne-terephthalic acid kunye ne-ethylene glycol, kunye nomxholo we-terephthalic acid ukuya kuma-75%.Amanzi amdaka okunciphisa i-alkali akanayo kuphela ixabiso eliphezulu le-pH (ngokubanzi> 12), kodwa anoxinzelelo oluphezulu lwezinto eziphilayo.I-CODCr kumanzi amdaka akhutshiweyo kwinkqubo yokunciphisa i-alkali inokufikelela kuma-90000 mg/L.Iikhompawundi zemolekyuli ephezulu kunye nedayi ethile kunzima ukuyicoca, kwaye olu hlobo lwamanzi amdaka luphantsi koxinzelelo oluphezulu kwaye kunzima ukuthoba isidima samanzi amdaka.

Ushicilelo kunye nokudaya izixhobo zokucocwa kwamanzi amdaka zisebenzisa imisebenzi yobomi ye-anaerobic kunye nebhaktiriya ye-aerobic ukusebenzisa izingcolisi eziphilayo kumanzi amdaka.Kwangaxeshanye, iiflocculent zebhayoloji ezenziwe ziimicroorganisms ziyazinzisa kwaye zintywilise izingcolisi ezimisiweyo kunye ne-colloidal organic, zibhengeze kumphezulu wodaka olusebenzayo, zithobe izinto eziphilayo, kwaye ekugqibeleni zifezekise isiphumo sokucocwa kwamanzi amdaka.

Isixhobo sixhotyiswe nge-aeration engaphantsi kwamanzi, ethi ityhalwe kukuhamba kwamanzi ukwenza i-aeration yokusebenza kabini.Xa ucoca amanzi amdaka, amanzi amdaka aqukuqela kwindawo yokungenisa umoya ukusuka phezulu kweso sixhobo, kwaye i-aerator ingena ngaphantsi kwamanzi kwaye ityhale ukuhamba kwamanzi ukuvuselela ukungcola.Ukungcola okungenayo okungenayo ngokukhawuleza kuxuba ngokupheleleyo kunye nomxube wokuqala, ukulungelelanisa nokutshintsha komgangatho wamanzi angenayo ukuya kwinqanaba eliphezulu.I-aerator inemisebenzi emibini yokuqhubela phambili kwamanzi kunye ne-aeration engaphantsi kwamanzi, eyenza ugutyulo kwindawo yokukhupha umoya ukuba lujikeleze rhoqo kwaye lwandise umxholo we-oksijini ochithiweyo kugutyulo.Ngenxa yokujikeleza okuqhubekayo kunye nokuhamba kwamanzi amdaka kwindawo yokuhambisa umoya, umgangatho wamanzi kwindawo nganye kwindawo ufana ngokufanayo, kwaye inani kunye neempawu ze-microorganisms zifana ngokusisiseko.Ngoko ke, iimeko zokusebenza zecandelo ngalinye lommandla we-aeration ziphantse zihambelana.Oku kulawula yonke i-biochemical reaction phantsi kweemeko ezilungileyo nezifanayo.Izinto eziphilayo zihlanjululwa ngokuthe ngcembe ngama-microorganisms, kwaye amanzi amdaka ayacocwa.Ukusebenza kokucoca kuphezulu, kwaye zonke izikhombisi zamanzi amdaka zihlangabezana nemigangatho yokukhutshwa kwelizwe "iMigangatho yokuThuthwa kweeNgcombolo kwi-Textile Dyeing and Finishing Industry" (GB 4267-92).Ngokweemfuno zabathengi, amaziko angaphezulu axhasayo anokunikezelwa kunyango lwe-ozone oluluqilima lwe-oxidation ukuze kuhlangatyezwane nemigangatho "yeMigangatho yoMgangatho waManzi kuMgangatho waManzi aseDolophini kunye noBume beNdawo yaManzi okuSingqongileyo" (GB/T 18921-2002) imigangatho yokurisayikilisha nokusetyenziswa.印染污水Esebenzayo. ububanzi bezixhobo zokusebenza:

Esi sixhobo sihlanganisiweyo soshicilelo kunye nokudaya ukucocwa kwamanzi amdaka sifanelekile kunyango lwamanzi amdaka ahlukeneyo aphezulu, aphakathi, aphantsi naphantsi, afana noshicilelo olunithiweyo kunye nokudaya amanzi amdaka, ukudaya uboya kunye nokugqiba amanzi amdaka, ukudaya kwesilika kunye nokugqiba amanzi amdaka, ukudaya kwemichiza. kunye nokugqiba amanzi amdaka, umqhaphu olukiweyo kunye nelaphu elidityanisiweyo lelaphu lokudaya kunye nokugqiba amanzi amdaka.