BOD ntawm cov dej haus nyab xeeb yog dab tsi?
BOD ntawm cov dej haus nyab xeeb yog dab tsi?

Video: BOD ntawm cov dej haus nyab xeeb yog dab tsi?

Video: BOD ntawm cov dej haus nyab xeeb yog dab tsi?
Video: Tswv Yexus lub neej thaum pib txug thaum xaus 2024, Kaum ib hlis
Anonim

A BOD theem ntawm 1-2 ppm yog suav hais tias zoo heev. Yuav tsis muaj ntau cov organic pov tseg tam sim no dej muab. A dej muab nrog a BOD theem ntawm 3-5 ppm yog suav tias yog nruab nrab huv.

Kuj paub yog, lub cev muaj feem cuam tshuam nrog dej zoo li cas?

BOD qhia txog tus nqi ntawm putrescible organicmatter tam sim no dej . Yog li ntawd, ib qho qis BOD yog anindicator ntawm zoo dej zoo , thaum lub siab BOD qhia tias qias neeg dej . Dissolved oxygen (DO) yog siv los ntawm cov kab mob thaum muaj ntau cov organic teeb meem los ntawm cov dej phwj tuaj los yog lwm yam paug tawm nyob rau hauv. dej.

Tom qab ntawd, lo lus nug yog, dab tsi yog qhov tso cai txwv ntawm BOD hauv dej khib nyiab? BOD yog ntsuas los ntawm incubating tus qauv dej ntawm 200 C uas yog simulate cov organic degradation nyob rau hauv cov xwm. Cov dej ntshiab tshaj plaws ntawm cov dej yuav tsum muaj BOD qis dua 1 mg/L. Lub cev dej qias neeg mus rau qhov nruab nrab qib hasa BOD nruab nrab ntawm 2 mus rau 8 mg / L thiab cov dej qias neeg lub cev yuav dhau mus BOD 8 mg/l.

Tsis tas li ntawd, vim li cas lub cev tseem ceeb hauv cov dej zoo?

TSEEM CEEB NTAWM BOD FORWASTEWATER Biochemical oxygen xav tau / lom oxygen xav tau isan dej tseem ceeb parameter vim nws muab anindex los ntsuam xyuas cov txiaj ntsig ntawm cov dej khib nyiab pov tseg yuav muaj nyob rau ntawm qhov chaw txais.

COD thiab BOD yog dab tsi hauv kev kho dej?

COD lossis Tshuaj Oxygen Xav Tau yog qhov ntsuas tag nrho ntawm txhua yam tshuaj hauv dej uas tuaj yeem ua rau lom. TOC lossis Total Organic Carbon yog ntsuas ntawm cov organiccarbons. BOD - Biochemical Oxygen Demand yuav tsum ntsuas cov khoom noj (lossis cov organic carbons) uas cov kab mob tuaj yeem ua rau oxidize.

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