Cov txheej txheem kho cov dej khib nyiab uas muaj cyanide thiab sodium cyanide wastewater

Hauv kev tiv thaiv ib puag ncig, kev kho cov dej khib nyiab uas muaj cyanide thiab cov dej khib nyiab Sodium cyanide tau ntev los ua ib qho tseem ceeb heev. Nrog rau kev txhim kho sai ntawm kev tsim khoom lag luam, tshwj xeeb tshaj yog hauv kev lag luam xws li electroplating, metallurgy, thiab tshuaj lom neeg, kev tso tawm cov dej khib nyiab uas muaj cyanide tau nce ntxiv txhua xyoo, ua rau muaj kev hem thawj loj rau ib puag ncig. Yog li, kev tshawb nrhiav cov txheej txheem kho cov dej khib nyiab uas muaj cyanide zoo, pheej yig, thiab zoo rau ib puag ncig yog qhov tseem ceeb tshaj plaws.

Cov yam ntxwv thiab kev phom sij ntawm Cyanide - Muaj cov dej khib nyiab

Cyanide - muaj cov dej khib nyiab feem ntau muaj cov tshuaj cyanide siab, uas muaj nyob hauv cov dej hauv cov ntaub ntawv dawb lossis tsis yooj yim. Ntawm lawv, hlau - cyanide complexes, xws li tooj liab - cyanide complexes thiab zinc - cyanide complexes, muaj ntau ruaj khov thiab nyuaj rau tshem tawm los ntawm cov pa kev kho mob txoj kev. Tsis tas li ntawd, cov dej khib nyiab kuj tseem muaj lwm cov hlau hnyav ions, cov organic teeb meem, acids, alkalis, thiab lwm yam khoom, nrog rau cov complex muaj pes tsawg leeg, uas ua rau muaj kev nyuaj siab ntawm kev kho mob. Kev tso tawm ntawm cyanide - uas muaj cov dej khib nyiab tsis yog tsuas yog ua rau lub cev tsis zoo xwb tab sis kuj tuaj yeem ua rau hauv cov khoom noj khoom haus, ua rau muaj kev hem thawj rau ecological ib puag ncig thiab tib neeg kev noj qab haus huv.

Kev Kho Tshuab rau Cyanide - Muaj cov dej khib nyiab

Raws li cov yam ntxwv ntawm cyanide - muaj cov dej khib nyiab, tam sim no siv cov thev naus laus zis kev kho mob suav nrog oxidation kev kho mob, txoj kev kho electrolytic, ion - pauv txoj kev, txoj kev kho kab mob lom, thiab kev sib xyaw ua ke ntawm ntau yam thev naus laus zis.

Txoj kev kho oxidation

Txoj kev Alkaline Chlorination

Nyob rau hauv cov xwm txheej alkaline (feem ntau nrog tus nqi pH ntawm 10 thiab 11), cov tshuaj oxidants xws li chlorine lossis sodium hypochlorite raug ntxiv rau oxidize cov tshuaj cyanide rau hauv cov nitrogen tsis muaj tshuaj lom thiab Carbon dioxide. Txoj kev no yooj yim rau kev khiav lag luam, muaj cov txiaj ntsig kho mob ruaj khov, thiab cov tshuaj muaj nyob rau hauv thiab pheej yig. Txawm li cas los xij, nws yuav ua rau muaj kuab paug thib ob thiab muaj qee qhov cuam tshuam rau cov khoom siv.

Hydrogen Peroxide Oxidation Method

Nyob rau hauv acidic los yog alkaline tej yam kev mob, hydrogen peroxide yog siv los ua oxidant rau oxidize cyanide tshuaj rau hauv nitrogen thiab dej. Nws yog tshwj xeeb tshaj yog tsim nyog rau kev kho cov dej khib nyiab nrog high - concentration cyanide tshuaj, tab sis tus nqi kho mob yog siab, thiab cov tshuaj tiv thaiv tej yam kev mob yuav tsum tau nruj me ntsis tswj.

Txoj kev ozone oxidation

Siv cov khoom muaj zog oxidizing ntawm ozone, cov tshuaj cyanide yog oxidized rau hauv cov khoom tsis muaj tshuaj lom. Cov kev kho mob zoo yog siab thiab tsis muaj cov pa phem thib ob, tab sis cov cuab yeej siv peev thiab cov nqi khiav lag luam yog siab.

Fenton Oxidation Method

Fenton reagent muaj li ntawm hydrogen peroxide thiab hlau ntsev yog siv rau tshuaj oxidation kom zoo degrade cyanide tshuaj.

Electrolytic Treatment Method

Cov tshuaj tiv thaiv electrochemical oxidation yog siv los rhuav tshem cov tshuaj cyanide hauv cov dej khib nyiab. Hauv qee qhov xwm txheej, cov cyanide ions hauv cov dej khib nyiab tau oxidized rau carbon dioxide, nitrogen, thiab ammonia. Nws yog qhov tsim nyog rau kev kho cov dej khib nyiab nrog siab - concentration cyanide ions, tab sis nws siv hluav taws xob hluav taws xob thiab tuaj yeem tsim cov pa phem cyanogen chloride gas.

Ion - Txauv Txoj Kev

Muaj zog - puag anion - pauv resins yog siv los pauv nrog cyanide ions hauv kev daws teeb meem, ua tiav kev tshem tawm ntawm cyanide ions. Nws yog qhov tsim nyog rau kev kho mob ntawm cyanide - muaj cov dej khib nyiab nrog qhov nruab nrab thiab qis qis, muaj kev kho mob siab, thiab tuaj yeem rov qab tau cov hlau ions tseem ceeb, tab sis cov nqi kho mob kuj tseem siab.

Txoj Kev Kho Mob Biological

Los ntawm kev degradation ntawm cov kab mob, cov tshuaj cyanide hloov mus rau hauv cov khoom tsis muaj tshuaj lom lossis tsis muaj tshuaj lom. Nws yog ib puag ncig tus phooj ywg thiab muaj kev ruaj ntseg, tab sis nws yuav tsum muaj qhov tsim nyog ib puag ncig (xws li kub, pH tus nqi, thiab lwm yam) thiab lub sijhawm kho ntev. Cov kev kho mob lom neeg feem ntau suav nrog cov txheej txheem activated sludge thiab txoj kev biofilm.

Cov txheej txheem sib xyaw

Raws li kev pom ntawm qhov nyuaj ntawm cyanide - muaj cov dej khib nyiab, kev sib xyaw ua ke ntawm ntau yam thev naus laus zis feem ntau yog siv. Piv txwv li, "alkaline chlorination method + ion - exchange method", "electrolytic treatment method + ion - exchange method", "hydrogen peroxide oxidation method + biological treatment method", thiab lwm yam los ntawm cov txheej txheem ua ke, nyob rau hauv - qhov tob ntawm kev kho cov dej khib nyiab tuaj yeem ua tiav, thiab cov dej ntws zoo tuaj yeem txhim kho.