Hauv ntiaj teb no, txhua yam muaj nws qhov zoo thiab qhov tsis zoo. Kev nce qib ntawm lub zej zog thiab kev txhim kho ntawm tib neeg lub neej tus qauv ua rau muaj kev ua qias tuaj rau ib puag ncig. Dej khib nyiab yog ib qho teeb meem zoo li no. Nrog rau kev txhim kho sai ntawm cov lag luam xws li petrochemicals, textiles, papermaking, tshuaj tua kab, tshuaj, metallurgy, thiab kev tsim khoom noj, tag nrho cov dej khib nyiab tawm tau nce ntxiv thoob ntiaj teb. Ntxiv mus, cov dej khib nyiab feem ntau muaj cov concentration siab, muaj tshuaj lom ntau, salinity siab, thiab cov xim ntau, ua rau nws nyuaj rau decompose thiab kho, ua rau muaj kev ua qias tuaj rau dej hnyav.
Txhawm rau daws cov dej khib nyiab loj uas tsim tawm txhua hnub, tib neeg tau siv ntau txoj kev, sib xyaw ua ke cov txheej txheem lub cev, tshuaj lom neeg, thiab kab mob, nrog rau kev siv lub zog xws li hluav taws xob, suab, lub teeb, thiab hlau nplaum. Tsab xov xwm no piav qhia txog kev siv "hluav taws xob" hauv cov thev naus laus zis kho dej electrochemical los daws qhov teeb meem no.
Cov txheej txheem kho dej electrochemical yog hais txog cov txheej txheem ntawm kev rhuav tshem cov pa phem hauv cov dej khib nyiab los ntawm cov tshuaj electrochemical tshwj xeeb, cov txheej txheem electrochemical, lossis cov txheej txheem lub cev hauv ib lub tshuab hluav taws xob tshwj xeeb, nyob rau hauv kev cuam tshuam ntawm cov electrodes lossis lub zog hluav taws xob siv. Cov txheej txheem electrochemical thiab cov khoom siv yooj yim, siv qhov chaw me me, muaj cov nqi khiav lag luam thiab kev saib xyuas qis dua, tiv thaiv kev ua qias tuaj thib ob zoo, muab kev tswj hwm siab ntawm cov tshuaj tiv thaiv, thiab ua rau muaj kev siv tshuab hauv kev lag luam, ua rau lawv tau txais lub npe ntawm cov thev naus laus zis "phooj ywg ib puag ncig".
Cov txheej txheem kho dej siv hluav taws xob suav nrog ntau yam txheej txheem xws li electrocoagulation-electroflotation, electrodialysis, electroadsorption, electro-Fenton, thiab electrocatalytic advanced oxidation. Cov txheej txheem no muaj ntau yam thiab txhua tus muaj nws tus kheej daim ntawv thov thiab thaj chaw tsim nyog.
Kev siv hluav taws xob los coagulation - Kev siv hluav taws xob los ua kom cov khoom siv flotation zoo
Qhov tseeb, electrocoagulation yog electroflotation, vim tias cov txheej txheem coagulation tshwm sim ua ke nrog flotation. Yog li ntawd, nws tuaj yeem raug hu ua "electrocoagulation-electroflotation."
Txoj kev no vam khom rau kev siv hluav taws xob sab nraud, uas tsim cov cations yaj tau ntawm qhov anode. Cov cations no muaj cov nyhuv coagulating rau cov pa phem colloidal. Tib lub sijhawm, ntau cov roj hydrogen raug tsim tawm ntawm cathode nyob rau hauv qhov cuam tshuam ntawm lub zog, uas pab cov khoom flocculated nce mus rau saum npoo. Ua li no, electrocoagulation ua tiav kev sib cais ntawm cov pa phem thiab kev ntxuav dej los ntawm anode coagulation thiab cathode flotation.
Siv hlau ua lub anode uas yaj tau (feem ntau yog txhuas lossis hlau), cov Al3+ lossis Fe3+ ions uas tsim tawm thaum lub sijhawm electrolysis ua haujlwm ua cov electroactive coagulants. Cov coagulants no ua haujlwm los ntawm kev nias cov txheej ob txheej colloidal, ua rau nws tsis ruaj khov, thiab txuas thiab ntes cov khoom colloidal los ntawm:
Al-3e → Al3+ lossis Fe -3e → Fe3+
Al3+ + 3H2O → Al(OH)3 + 3H+ or 4Fe2+ + O2 + 2H2O → 4Fe3+ + 4OH-
Ntawm ib sab tes, cov electroactive coagulant M(OH)n uas tsim tau yog hu ua soluble polymeric hydroxo complexes thiab ua haujlwm ua flocculant kom sai thiab zoo coagulate colloidal suspensions (cov roj me me thiab cov khoom tsis huv) hauv cov dej khib nyiab thaum txuas thiab txuas lawv los ua cov aggregates loj dua, ua kom cov txheej txheem sib cais sai dua. Ntawm qhov tod tes, colloids raug nias rau hauv qab kev cuam tshuam ntawm electrolytes xws li txhuas lossis hlau ntsev, ua rau coagulation los ntawm Coulombic effect lossis adsorption ntawm coagulants.
Txawm hais tias qhov kev ua haujlwm electrochemical (lub neej) ntawm cov electroactive coagulants tsuas yog ob peb feeb xwb, lawv cuam tshuam rau lub peev xwm ob txheej, yog li ua rau muaj kev cuam tshuam loj rau cov khoom colloidal lossis cov khoom dais. Yog li ntawd, lawv lub peev xwm adsorption thiab kev ua haujlwm siab dua li cov txheej txheem tshuaj lom neeg uas muaj kev ntxiv ntawm cov tshuaj reagents ntsev txhuas, thiab lawv xav tau cov nyiaj tsawg dua thiab muaj cov nqi qis dua. Electrocoagulation tsis cuam tshuam los ntawm cov xwm txheej ib puag ncig, qhov kub ntawm dej, lossis cov khoom tsis huv, thiab nws tsis dhau los ntawm cov tshuaj tiv thaiv sab nrog cov ntsev txhuas thiab dej hydroxides. Yog li ntawd, nws muaj ntau yam pH rau kev kho cov dej khib nyiab.
Tsis tas li ntawd xwb, qhov tso tawm cov npuas me me ntawm qhov chaw cathode ua rau muaj kev sib tsoo thiab kev sib cais ntawm cov colloids. Qhov electro-oxidation ncaj qha ntawm qhov chaw anode thiab qhov electro-oxidation tsis ncaj qha ntawm Cl- mus rau hauv cov chlorine nquag muaj peev xwm oxidative muaj zog ntawm cov organic soluble thiab cov inorganic txo qis hauv dej. Cov hydrogen tshiab tsim los ntawm cathode thiab oxygen los ntawm anode muaj peev xwm redox muaj zog.
Yog li ntawd, cov txheej txheem tshuaj lom neeg uas tshwm sim hauv lub tshuab hluav taws xob electrochemical yog qhov nyuaj heev. Hauv lub tshuab hluav taws xob, electrocoagulation, electroflotation, thiab electrooxidation cov txheej txheem txhua yam tshwm sim tib lub sijhawm, hloov pauv thiab tshem tawm ob qho tib si cov colloids yaj thiab cov pa phem hauv dej los ntawm kev coagulation, flotation, thiab oxidation.
Xingtongli GKD45-2000CVC Electrochemical DC POWER SUPPLY
Nta:
1. AC Tswv Yim 415V 3 Theem
2. Yuam kom cua txias
3. Nrog kev nce toj ua haujlwm
4. Nrog lub ntsuas amper thiab lub sijhawm relay
5. Kev tswj chaw taws teeb nrog 20 'meter' tswj xov hlau
Cov duab khoom:
Lub sijhawm tshaj tawm: Cuaj hlis-08-2023
