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RyanG YaBB Newbies Offline I love Water and Wastewater.com Posts: 2 Gender: Company or Organization: WWTP	SUGAR INDUSTRY Oct 23^rd, 2009, 2:09am Hi everyone! Could anyone brief me about the wastewater treatment for effluents from the SUGAR INDUSTRY? I think Indian sugar industry could be a good benchmark. Processes and techniques could be helpful. Thanks a lot. Ryan
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Juan David López

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Re: SUGAR INDUSTRY
Reply #1 - Oct 23^rd, 2009, 3:55pm

I give sugar (as BOD source) to my bench-scale reactor in the lab. Sugar is readily biodegradable so I have to use dog food too.

I've seen this type of bacteria associated with sugar (sorry about the quality):

http://img20.imageshack.us/i/3103091157.jpg/

http://img30.imageshack.us/i/3103091158.jpg/

I don't know if is just me or those bacterias are sugar lovers Tongue

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Ivanhoe Full Member Offline I love Water and Wastewater.com Posts: 125 Company or Organization: .	Re: SUGAR INDUSTRY Reply #2 - Oct 25^th, 2009, 8:35pm Quote: I give sugar (as BOD source) to my bench-scale reactor in the lab. Sugar is readily biodegradable so I have to use dog food too. Did you mean sugar is not readily biodegradable and that you have to add dog food because it is?
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Juan David López

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Re: SUGAR INDUSTRY
Reply #3 - Oct 25^th, 2009, 9:45pm

No, on the contrary, dog food is not as biodegradable as sugar. It’s like… they eat sugar so fast (so filamentous bacteria love it), but dog food… it’s like so hard to “chew” that they need more time to transform it (so filamentous bacteria are not so happy about it).

You could be promoting the growth of filamentous bacteria if you only use sugar, but with dog food (for example), you are promoting floc forming bacteria too.

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almar1965

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Re: SUGAR INDUSTRY
Reply #4 - Oct 29^th, 2009, 5:55pm

Hi

I agree that just sugar is bad...any monocultural food source tends to have problems. I'm not so sure about dog food though. In a lab it is cheap...but on a large scale plant it would cost a fortune !!

Methanol and acetic acid work well. I have had good results with molasses, but it's a swine to pump ! I found a good source called vinasse which you can get from yeast manufacturers. It has vitamins such as B12 and a nice high BOD.

regards
Alistair

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Juan David López Ex Member	Re: SUGAR INDUSTRY Reply #5 - Oct 29^th, 2009, 6:09pm Of course. As almar1965 says, at lab scale, dog food is a very good option. But at full scale... Methanol is pretty common. But in this case... Sugar + Methanol doesn't sound like a good combination. Does it?
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Kelly H

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Re: SUGAR INDUSTRY
Reply #6 - Nov 3^rd, 2009, 4:17pm

Quote:

I give sugar (as BOD source) to my bench-scale reactor in the lab. Sugar is readily biodegradable so I have to use dog food too.

I've seen this type of bacteria associated with sugar (sorry about the quality):

http://img20.imageshack.us/i/3103091157.jpg/

http://img30.imageshack.us/i/3103091158.jpg/

I don't know if is just me or those bacterias are sugar lovers Tongue

I'm running a lab-scale continuous AS system on sugar (and some OJ) right now too, and I'm seeing these guys too. Any idea of the genus, perhaps? Huh

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Juan David López Ex Member	Re: SUGAR INDUSTRY Reply #7 - Nov 3^rd, 2009, 8:15pm Sorry Kelly H, I've no idea
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Hennessy

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Re: SUGAR INDUSTRY
Reply #8 - Nov 4^th, 2009, 6:20am

http://books.google.com/books?id=rchW4QutXqwC&pg=PA88&lpg=PA88&dq=treating+wastewater+with+sugar&source=bl&ots=vor4J26V2A&sig=DIKayQy-pQS0ZFsWjmmaHXKQ7o0&hl=en&ei=-GHxSoj4Ic6a8AaA5_T-CA&sa=X&oi=book_result&ct=result&resnum=10&ved=0CEEQ6AEwCQ#v=onepage&q=treating%20wastewater%20with%20sugar&f=false

The preview of this book shows seems pretty promising for finding your answers.

Best regards,

Hennessy

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C. Gillen God Member Offline Applied Environmental Biotechnology Posts: 773 Ireland Gender: Company or Organization: BioFuture Ltd.	Re: SUGAR INDUSTRY Reply #9 - Nov 4^th, 2009, 10:23am Hi RyanG, Please check your personal messages. Best regards, Cgillen
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Jamith Full Member Offline I love Water and Wastewater.com Posts: 130 Company or Organization: LG	Re: SUGAR INDUSTRY Reply #10 - Nov 10^th, 2009, 3:30am Even I add sugar as a food for this microbiology’s
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Alokevaid YaBB Newbies Offline Water and Wastewater.com is the best! Posts: 29	Re: SUGAR INDUSTRY Reply #11 - Nov 11^th, 2009, 3:03pm For sugar beet plants, Anaerobic digestion followed by aerobic treatment. What are the effluent standards?
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C. Gillen God Member Offline Applied Environmental Biotechnology Posts: 773 Ireland Gender: Company or Organization: BioFuture Ltd.	Re: SUGAR INDUSTRY Reply #12 - Nov 12^th, 2009, 5:43am Dear Alokevaid, This is not going to be standard. It will be set by your local Department of the Environment or EPA. Best regards, Cgillen
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Alokevaid YaBB Newbies Offline Water and Wastewater.com is the best! Posts: 29	Re: SUGAR INDUSTRY Reply #13 - Nov 12^th, 2009, 10:46am Quite right. That is what I meant: what are the effluent limits in the permit. Thanks, Aloke
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ranmandala YaBB Newbies Offline I love Water and Wastewater.com Posts: 3 Company or Organization: Central Environmental Authorit	Re: SUGAR INDUSTRY Reply #14 - Nov 15^th, 2009, 7:46pm Dear Member, I am Sri lankan who reading M.sc in environmental science. My research is based on environmental management in sugar industry. I tried to attach word file which contain finding sofar. But failed. Pls send me your e-mail number. Thanking you Ranmandala
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Alokevaid YaBB Newbies Offline Water and Wastewater.com is the best! Posts: 29	Re: SUGAR INDUSTRY Reply #15 - Nov 16^th, 2009, 8:36am Hi, Mine is Aloketx@yahoo.com
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conman

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Re: SUGAR INDUSTRY
Reply #16 - Nov 28^th, 2009, 3:05am

Hi All,

We are treating 15000 mg/liter COD of sugar refinary effluent by using anaerobic - aerobic process. Our COD effluent could reach as low as 20 mg/liter. We are using ABR - Anaerobic Baffled Reactor for the anaerobic process (effluent COD from 15000 down to 2000 mg/liter max) followed by aerbic reactor. The HRT of the ABR is 48 hr and with OLR : 7,5 kg COD/m3.day

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RyanG

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Re: SUGAR INDUSTRY
Reply #17 - Dec 16^th, 2009, 12:50am

Thanks for all the replies.

Hi Conman, that's very efficient system you have in treating wastewater from refinery.

Anyway, how was the condition of your pH influent from the refinery? Is too acidic because of the acid backwash? How do you solve such problem? I encountered one plant having influent pH as low as 4.5.

Also guys, is it advisable to use coagulants and flocculants after aeration for treating the wastewater?

Thank you all.

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conman YaBB Newbies Offline I love Water and Wastewater.com Posts: 37 Company or Organization: Global Chemie Indonesia	Re: SUGAR INDUSTRY Reply #18 - Dec 18^th, 2009, 8:11pm Hi Ryan, We add liquid caustic to fix the acidic pH of the waste water and sodium bicarbonate for buffering the pH before feeding to anaerobic reactor. Try to adjust the pH 6,8 - 7,2 for optimal result Conman
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