Biochemical Oxygen Demand (BOD) yog dab tsi?
Biochemical Oxygen Demand (BOD) Kuj hu ua biochemical oxygen xav tau. Nws yog ib qho kev qhia dav dav qhia txog cov ntsiab lus ntawm oxygen-xav tau cov khoom xws li cov organic tebchaw hauv dej. Thaum cov organic teeb meem nyob rau hauv dej yog nyob rau hauv kev sib cuag nrog huab cua, nws yog decomposed los ntawm aerobic microorganisms, thiab tus nqi ntawm cov pa yuav tsum tau ua rau nws inorganic los yog gasified yog hu ua biochemical oxygen thov, qhia nyob rau hauv ppm los yog mg / L. Tus nqi siab dua, cov organic pollutants ntau dua nyob rau hauv cov dej thiab cov pa phem ntau dua. Nyob rau hauv qhov tseeb, lub sij hawm kom tag decompose organic teeb meem nws txawv nrog nws hom thiab kom muaj nuj nqis, hom thiab kom muaj nuj nqis ntawm microorganisms, thiab qhov xwm ntawm dej. Nws feem ntau siv kaum lossis ntau pua hnub kom tiav oxidize thiab decompose. Ntxiv mus, Qee lub sij hawm vim muaj kev cuam tshuam ntawm cov hlau hnyav thiab cov tshuaj lom hauv cov dej, cov dej num ntawm cov kab mob tau cuam tshuam thiab txawm tua. Yog li ntawd, nws yog qhov nyuaj rau ntsuas BOD kom raug. Txhawm rau kom lub sijhawm luv luv, qhov xav tau tsib hnub oxygen (BOD5) feem ntau yog siv los ua tus qauv kwv yees rau cov pa phem hauv dej. BOD5 yog kwv yees li ntawm 70% ntawm cov pa oxygen noj kom tiav oxidative decomposition. Feem ntau hais lus, cov dej ntws nrog BOD5 qis dua 4ppm tuaj yeem hais tias tsis muaj kuab paug.
Yuav kuaj Biochemical oxygen thov li cas?
Ib qho yooj yim-rau-ua haujlwm BOD ntsuas ntsuas yog qhov tseem ceeb heev rau kev kuaj xyuas dej zoo. Lianhua's BOD5 cov cuab yeej siv cov mercury-free differential siab (manometric), uas tuaj yeem kuaj cov dej uas muaj cov kab mob tsis ntxiv cov tshuaj reagents, thiab cov txiaj ntsig tuaj yeem luam tawm tau. Leading patented technology.
Chemical Oxygen Demand (COD) yog dab tsi?
Tshuaj lom neeg cov pa oxygen xav tau (COD) yog cov pa oxygen uas yuav tsum tau oxidize organic pollutants thiab qee qhov txo cov tshuaj hauv dej hauv qee qhov xwm txheej nrog cov oxidizing tus neeg sawv cev (xws li potassium dichromate los yog potassium permanganate), qhia hauv milligrams oxygen noj ib liter ntawm dej qauv. tus xov tooj hais. COD yog qhov taw qhia tseem ceeb uas feem ntau siv los ntsuas cov dej zoo. Kev xav tau tshuaj lom neeg muaj cov yam ntxwv ntawm txoj kev txiav txim siab sai thiab yooj yim. Potassium chromate, tus neeg sawv cev oxidizing, tuaj yeem ua tiav oxidize cov organic hauv dej, thiab tuaj yeem oxidize lwm cov tshuaj txo. Cov oxidant poov tshuaj permanganate tsuas tuaj yeem oxidize txog 60% ntawm cov organic. Tsis yog ob txoj hauv kev tuaj yeem cuam tshuam qhov xwm txheej tiag tiag ntawm kev degradation ntawm cov pa phem hauv dej, vim tias ob leeg tsis qhia txog cov khoom organic uas cov kab mob tuaj yeem oxidize. Yog li ntawd, biochemical oxygen thov feem ntau yog siv rau hauv kev kawm txog cov dej tsis zoo los ntawm cov organic teeb meem.
Tam sim no, kev tshawb nrhiav COD muaj ntau heev hauv kev kho dej, thiab xav tau los ntawm cov chaw tsim khoom, cov dej phwj tuaj, cov nroog, cov dej ntws thiab lwm yam kev lag luam. Lianhua's COD tshawb nrhiav tshuab tuaj yeem tau txais cov txiaj ntsig raug sai sai hauv 20 feeb thiab siv dav.
Post lub sij hawm: Apr-27-2023
