3 replies to this topic

[curious_cat]

I was reading an old post by @fallah where he says that if the COD of the water is above 15,000 ppm then aerobic treatment typically does not work:

 

http://www.cheresour...acility-design/

 

So if you do have an effluent with COD that is higher than this limit then what is typical treatment option? Is anearobic treatment the strategy or something else?

 

I am assuming the organics are bio-degradable and nothing refractory like chlorinated solvents etc. 

Edited by curious_cat, 17 December 2016 - 01:36 AM.

[breizh]

Hi ,

you may consider Fenton process  !

 

Good luck

 

Breizh

[curious_cat]

Hi ,

you may consider Fenton process  !

 

True. But H2O2 is expensive! 

 

On the other hand, what's the actual limitation to using high COD feed? Can the bacteria not tolerate it?

[breizh]

hi Curious ,

Fenton is definitely expensive ,OPEX and equipment to recover the sludge .

 

for aerobic treatment , you need to have residence time long enough for the bugs to work combined with good aeration system ( fine bubbles of air ) , no or minimum salt and support from the sun . It all depends what you want to achieve . The data provided in an earlier post were based on an existing facility in Thailand where the feed was about 12000 to 15000 ppm COD and the discharge below 200 ppm .

 

my experience.

 

Breizh

Edited by breizh, 17 December 2016 - 10:47 PM.