Dab tsi ua rau COD siab hauv dej?
Dab tsi ua rau COD siab hauv dej?

Video: Dab tsi ua rau COD siab hauv dej?

Video: Dab tsi ua rau COD siab hauv dej?
Video: New song 2018 Nkauj Mog Mim Hlub Yim Leej : By Nplooj Siab Vaj. The original. 2024, Kaum ib hlis
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Siab COD / BOD theem nyob rau hauv stormwater runoff yog ua los ntawm cov khoom noj khoom haus thiab dej haus cov khoom pov tseg los ntawm cov kaus poom / lub raj mis, tshuaj tua kab mob, thiab cov roj emulsified los ntawm cov khoom noj khoom haus thiab kev ua liaj ua teb. Raws li feem ntau cov qauv ntawm COD yog dej soluble, cov pa phem no kis tau yooj yim ntawm cua daj cua dub mus rau hauv dej.

Ib yam li ntawd, koj tuaj yeem nug, ua li cas yog cod siab hauv dej?

TSEEM CEEB NTAWM COD RAU TXOJ CAI Siab COD qib txhais tau tias ntau dua ntawm cov khoom siv oxidizable organic hauv cov qauv, uas yuav txo qis cov pa oxygen (DO) qib. Kev txo qis hauv DO tuaj yeem ua rau cov mob anaerobic, uas yog deleterious rau siab dua cov ntaub ntawv hauv dej.

Tsis tas li, dab tsi ua rau muaj BOD siab hauv dej? Nitrates thiab phosphates nyob rau hauv lub cev ntawm dej tuaj yeem pab txhawb rau siab BOD qib. Nitrates thiab phosphates yog cog cov as-ham thiab tuaj yeem ua cog lub neej thiab algae kom loj hlob sai. Qhov no ua rau cov organic pov tseg hauv lub dej , uas yog ces decomposed los ntawm cov kab mob. Qhov no ua rau a highBOD qib.

Hais txog qhov no, COD qib hauv dej yog dab tsi?

Cov tshuaj chemical oxygen xav tau ( COD ) yog qhov ntsuas ntawm dej thiab dej khib nyiab zoo. COD yog qhia inmg/L, uas qhia qhov loj ntawm oxygen noj ib liter ntawm kev daws. Cov COD kev sim tsuas yog yuav tsum tau 2-3 teev, thaum qhov kev sim Biochemical (lossis Biological) Oxygen Demand (BOD) yuav tsum tau 5 hnub.

COD thiab BOD yog dab tsi?

COD lossis Chemical Oxygen Demand yog qhov ntsuas tag nrho ntawm txhua yam tshuaj hauv dej uas tuaj yeem oxidized. TOcor Total Organic Carbon yog qhov ntsuas ntawm cov organic carbons. BOD los yog Biological Oxygen Demand yuav tsum ntsuas tus nqi ntawm cov zaub mov (los yog cov organic carbons) uas cov kab mob tuaj yeem oxidize.

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