X hits on this document

22 views

0 shares

0 downloads

0 comments

5 / 12

Timeswitch Process

Influent

Effluent

Aerobic- Anoxic Reactor

Clarifier

Sludge Recycle

Heterotrophic Bacteria

Oxygen KOH

>0.1 mg O2/L

<0.1 mg O2/L

No DO or NO3

Mechanism

Respiration

Respiration

Fermentation

e- donor

Organic

Organic

Organic

e- acceptor

O2

NO3-

Organic

Cell yield, e- basis

60%

50%

10%

Rel. Growth rate

100%

80-90%

10%

Aerobic

Anoxic

Anaerobic

-

Nitrification

Denitrification

N removal

No

Yes

Environment

Oxidative

Reductive

e- donor

Ammonia

Organic carbon

e- acceptor

Oxygen

Nitrate

Int. product(s)

Nitrite

Nitrite, NO, N2O

Final product

Nitrate

Nitrogen gas

Max. growth rate

0.8 day-1

6 day-1

Cell yield, e- basis

10%

54%

Nitrification vs. Denitrification

5

Document info
Document views22
Page views22
Page last viewedThu Dec 01 03:18:48 UTC 2016
Pages12
Paragraphs434
Words1503

Comments