BOD (Biochemical Oxygen Demand), raws li lub teb chaws tus qauv txhais, BOD hais txog biochemical
Cov pa oxygen xav tau hais txog cov pa oxygen uas tau siv los ntawm cov kab mob hauv cov kab mob biochemical Cov txheej txheem ntawm decomposing qee yam oxidizable hauv dej raws li cov xwm txheej.
Qhov cuam tshuam ntawm BOD: Cov dej phwj hauv tsev thiab cov dej khib nyiab muaj ntau qhov ntau ntawm cov organic sib txuas. Thaum cov organic tshuaj decompose nyob rau hauv dej tom qab polluting dej, lawv haus ib tug loj npaum li cas ntawm cov pa yaj, yog li cuam tshuam qhov sib npaug ntawm oxygen nyob rau hauv dej, deteriorating cov dej zoo, thiab ua rau tuag ntawm ntses thiab lwm yam kab mob nyob rau hauv dej vim hypoxia. . Cov organic tebchaw uas muaj nyob rau hauv lub cev dej yog complex thiab nyuaj los txiav txim rau txhua yam. Tib neeg feem ntau siv cov pa oxygen uas siv los ntawm cov teeb meem organic hauv dej hauv qee qhov xwm txheej los qhia ncaj qha cov ntsiab lus ntawm cov organic teeb meem hauv dej, thiab Biochemical oxygen xav tau yog ib qho ntawm cov cim tseem ceeb. Nws kuj qhia txog biodegradability ntawm cov organic tebchaw hauv cov dej khib nyiab.
BOD5 yog dab tsi: (BOD5) yog hais txog tus nqi ntawm cov pa oxygen uas tau siv thaum tus qauv yog incubated nyob rau hauv ib qho chaw tsaus ntawm (20 ± 1) ℃ rau 5 hnub ± 4 teev.
Microbial electrode yog ib qho sensor uas sib txuas cov tshuab microbial nrog electrochemical nrhiav tshuab. Nws tsuas yog muaj cov pa oxygen electrode yaj thiab immobilized microbial zaj duab xis nruj nreem txuas rau nws qhov chaw ua pa. Lub hauv paus ntsiab lus ntawm kev teb rau cov tshuaj BOD yog tias thaum nws muab tso rau hauv lub substrate yam tsis muaj B0D cov khoom ntawm qhov kub thiab txias thiab yaj cov pa oxygen concentration, vim yog qee yam ua pa ntawm cov kab mob, cov yaj oxygen molecules hauv substrate diffuse mus rau oxygen electrode los ntawm. lub microbial membrane ntawm ib tug npaum li cas, thiab cov microbial electrode outputs ib tug khov kho-lub xeev tam sim no; Yog hais tias cov tshuaj BOD ntxiv rau hauv qab cov tshuaj, cov molecule ntawm cov khoom yuav diffuse mus rau hauv microbial membrane ua ke nrog cov pa molecule. Vim hais tias cov kab mob hauv daim nyias nyias yuav Anabolism cov tshuaj BOD thiab haus cov pa oxygen, cov pa oxygen nkag mus rau hauv cov pa electrode yuav raug txo, uas yog, qhov diffusion yuav raug txo, cov zis tam sim no ntawm electrode yuav raug txo, thiab nws yuav poob. mus rau tus nqi ruaj khov tshiab hauv ob peb feeb. Nyob rau hauv qhov tsim nyog ntawm BOD concentration, muaj kev sib raug zoo ntawm qhov txo qis hauv electrode tso zis tam sim no thiab BOD concentration, thaum muaj kev sib raug zoo ntawm BOD concentration thiab BOD tus nqi. Yog li ntawd, raws li qhov txo qis hauv tam sim no, BOD ntawm cov qauv dej ntsuas tuaj yeem txiav txim siab.
LH-BODK81 Biological Chemical oxygen thov BOD microbial sensor ceev tester, piv nrog cov kev ntsuas BOD ib txwm, hom tshiab ntawm optical sensor muaj ntau yam zoo. Ua ntej, txoj kev ntsuas BOD ib txwm xav tau kev cog qoob loo ntev, feem ntau siv 5-7 hnub, thaum cov ntsuas tshiab tsuas siv ob peb feeb los ua kom tiav qhov ntsuas. Qhov thib ob, kev ntsuas kev ntsuas ib txwm xav tau ntau cov tshuaj reagents thiab iav ntsuas, thaum lub ntsuas ntsuas tshiab tsis tas yuav muaj cov tshuaj reagents lossis cov cuab yeej siv, txo cov nqi kev sim thiab kev nqis peev ntawm cov neeg ua haujlwm. Tsis tas li ntawd, cov kev ntsuas BOD ib txwm muaj qhov cuam tshuam rau ib puag ncig xws li kub thiab lub teeb, thaum cov sensors tshiab tuaj yeem ntsuas hauv ntau qhov chaw thiab teb sai sai rau kev hloov pauv.
Yog li no, hom tshiab ntawm optical sensor muaj dav daim ntawv thov kev cia siab. Ntxiv nrog rau kev siv hauv kev saib xyuas dej zoo, qhov ntsuas no tseem tuaj yeem siv rau ntau yam xws li zaub mov, tshuaj, kev tiv thaiv ib puag ncig, thiab kev tshawb nrhiav cov organic teeb meem hauv kev qhia hauv chav kuaj.
Post lub sij hawm: Jun-19-2023
