Treatment of Wastewater from Molasses

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I am looking for a cost-effective solution to treat wastewater from molasses. COD is in the range of 40,000 and conductivity is around 18,000-20,000.

Reverse Osmosis is too expensive.

The desired result is COD less than 120 and BOD less than 20.

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28 Answers

  1. What is the capacity? Anaerobic digester+ Aerobic treatment is recommended as the COD is high. Salt may be an issue however detail parameters will be helpful. Please discuss in details.

  2. Hi, we're often used in conjuction with biotreatments to remove the remaining COD to reach compliance. Arvia is chemical free, sludge free and you don't need to replace any materials. If you want to use a cheaper biotreatment we can get the COD down from

  3. Dear Dhiresh,

    You will need a biological treatment to remove most of the BOD to the desired value, and depending on the treatment process and the HRT you could reach the COD too.

    If the COD removal can not reach the COD value, you could use an AOP to obtain it.

    If you need remove the dissolved solids (conductivity), then you will need other extra process as the RO, but been sure you have less than the maximun COD and BOD required values to send it to the inlet of the RO process.

    The biological treatment can be anaerobic or aerobic, but if you use any anerobic step you will need at less one aerobic step to polish the BOD and COD before the effluent.

    The anaerobic system does not use energy (or use just few), but is more complex to start up, operare or recover it after a shock, and you could need special skilled employees or at less a contractor or any other company to operate it.

    The aerobic system in special MBBR use energy, but is a less complex system that can be used in this application after the anerobic system,  or as the total biologic system.

    If you will not use the anaerobic system, the configuration calculations and size of the MBBR will chance.

    If you want use the anaerobic system, as an example you could think in the following process:

    Biological Treatment (Anaerobic)>>Biological Treatment (MBBR1)>>Biological Treatment (MBBR2)>>Microfiltration>>AOP(Ozone just to reach the removal value if needed)>>RO (If needed).

    More simple is more easy.

    Regards,

    Orlando D. Gutiérrez Coronado

  4. I have spoken to our tech boys and this is there answer

    "In principal, we can solve the problem, but you know, we need water-samples. 

    Is the electrical conductivity expected to be reduced as well? In that case it can be done only by reverse osmosis."

    If you want to go further with this please let me know at office@gictechs,com

     

  5. What is the flow rate? Is it a small stream or not? If it is not too big, then there could be solutions that can address the COD & conductivity simultaneously,, but if it is a big flow rate, then you are going to need a dedicated upfront biological process (preferentially anaerobic) to address the very high COD as it will be too expensive for the system that I have in mind. The anaerobic process will most probably have to be followed by an aerobic polishing step before you can even start considering to filter and feed a BWRO plant that will remove the dissolved salts.

    In closing, do you have a better water quality?

     

    1 Comment

    1. 800 m3/day. This is spentwash from molasses..

  6. We can remove organic material and colour from wastewater.

    We would only give you a quote after analysing a sample (5 litres) of the waste and proving we can do what is required. We would also need the flow rate.

    There is some information on our equipment on www.gictechs.com otherwise email me at office@gictechs.com.

  7. If this wastewater is spent wash (bottom product from distillation) after molasses fermentation, then only the 20 ppm BOD would be feasible - but not the 120 ppm COD - after high-rate anaerobic digestion and advanced aerobic treatment.

  8. Maybe just be aware that molasses by product liquor is a very good, but unbalanced, fertilizer.  The sugar even if unfermentable, provides energy.   

  9. cheapest way is by subscription.   this is salinity between 11 to 12 ppt.  cod of 40,000 and the color must be excess of 5000.  with the proper tankage and piping, with no other electro mechanical capex, the total cost per m3 should be in the range of $2 given volume treatment.  

  10. Dear Mr Sampat,

    What you mean by waste water from molasses. If it is spent wash from distillery then 40000 mg/l COD is too low.  Please identify the process.

    Anaerobic treatment followed by aerobic treatment can give COD less than 120 mg/l

    Please send the details for further advise

    Rajendrakumar V Saraf, FIE, FIWWA

    Chairman

     

    Viraj Envirozing India Pvt. Ltd

    21, Radhakrishna, Near SBI, Paud Road

    Pune 41038

    Tel 02025433445, 9822186763

    www.virajenvirozing.com

  11. Dear Dhiresh , 

    You mean to treat Spent wash ? We had conducted R&D on it and get success by reducing 70 to 80 percent COD from Spent wash. It's a eco friendly liquid solution which will reduce the COD as well as settled down sludge which will be purely organic and you can used it again in different way . 

    Can you able to send some sample of your waste water so that we can check in our Lab and revert back to you. we will also provide you demo at your facility once we assure the result. 

    for more information we can communicate on 

    jalendu.pathak@omsaienterprise.in 

    Thanks with Regards, 

    1 Comment

  12. Good day, we repurify any kind of wastewater, seawater, O&G water, etc with 95% efficiency warranted and cero emissions; the cost-benefit is very profitable in the short to medium term.

    Is this the kind of solution are you looking for?

    Kind Regards

    Arturo

  13. Hi. Best is Bio digester and use CH4 for energy and bottom sludges for bio-massed briquettes.. And water again for phyto r .. then enjoy using 100/10  wtr for veg flwr farms .. Prof Ajit Seshadri. Vels Unvrsty Chennai India ..

  14. As others have mentioned - a great opportunity for a biodigester.

    Our company has a 100% fully organic product that would massively lower COD/BOD. We have used this in Australia, US.A., Malaysia, India and China as well as Ireland.

    This product also super charges biodigesters.

    www.soleco-technology.com

    E, Hugh Pettman, Ph.D.

  15. Dhiresh Sampat. I have project of treatment of vinasse here in Brazil, State of São Paulo. The largest producer of sugar and alcohol in Brazil. In it, I include RO. It results in rearrangeable waste for farming or even for cattle feeding.

    Being interested, please contact me: jalberto.correa@hotmail.com.

    NOTE: The project was marketed with a sugar and alcohol plant, but under the conditions of the contract, we will be able to negotiate it again.

    Gretins

    José Alberto Corrêa Leite

    Doctor Hydraulics and Sanitation
    Wastewater Treatment - Bioenergy (fermentation) - Commercial intermediation.
    Guariba - São Paulo - Brazil
    jalberto.correa@hotmail.com
    Skype: jacl091245
    Tel: 55 (16) 3251-0873 Mobile: 55 (16) 99776-3551  and   55 (16) 9 8820-7032

  16. Hi Dhiresh,

    I did the same project with a new patented facultative technology.

    The needed results was COD

  19. Hi Dhiresh,

    We may have the solution for you low foot print high efficiency. 

    AOX alone or AOX + bio depending on Flow rate

    I we have done similar wastewater in the past treating caramel with 3 time the COD level, so it should be possible to solve your problem.

    If you require to return water to the process we can also offer FO solution

    FO ----> fresh water to process 

          ----> concentrate treated by AOX ----> potential rtn to FO

    could be a true ZLD for your plant

    For now I just need a flow rate and I can give you an estimate and we can take it from there

    Let me know

    Best Regards

    Gerald

    1 Comment

    1. Please base your estimate on 500m3/day.

      1 Comment reply

      1. 500m3/day Ok I'll come back to you. We can also offer Fast AD systems I'll send some informationwhen I am back at the office. 

        Gerald

  20. Hello Dhiresh 

    Molasses waste is highly biodegradable and thus after initial pre treatment using biological system, you can bring down the COD to desired levels. 

    Kindly send us detailed inquiry on amit.levapor@gmail.com and We can provide you a conceptual process design to consider.  

     

  22. Dear Dhiresh,

     

    It is importand know how at much the flow is, and how much the disponible area is, and description of the system.

    On the other hand if we suppose you are considerating the RO, then we can suppose you have small disponible area. Isn't it?

    You can use from treatment lagoons, MBBR, anaerobic systems (AF, UASB), other ones.

    Please send us more data to we can give you a better idea.


    Regards,


    Orlando D. Gutiérrez Coronado

  23. Hi Diresh, a good opportunity to apply an emerging technology derivative of wet air oxidation for high strength organic streams like this one

    please feel free to contact me for further discussion in the application

    regards

  25. Dhiresh you have a wonderful opportunity!

    If you have availability to use an anaerobic digester, your waste molasses is worth gold. Not sure how much volume is produced at your facility, but using this type of waste stream as a food source for biological treatment is worth good money. As biological treatment takes place, the filtrate/ effluent COD for your molasses will be greatly reduced.

    Contact other process facilities that use sweeteners like Coke Cola, wine breweries, water treatment chemical companies that have contacts for marketing this type of waste stream/ enhancement for biological treatment.

    Keep us posted!

     

    1 Comment

  26. Dear Mr Sampat 

    Hope you have already installed UASB>Biological Treatment> Settlers  ( Multiple step may be required)  thereafter  Nano system is a feasible option for colour removal and further reduction of  COD/BOD. Please provide details of your existing system for us to suggest a treatment scheme mail us at info@dewindia.com

    Shashi Kant Thakur ( Director) 

    www.dewindia.com

     

     

  28. Hi! What is the amount of waste water (m³/h)? We may have a solution for it.

    1 Comment

    1. 500-800m3/day

      1 Comment reply

      1. Hi, The most practical way to treat this type of wastewater is to use facultative bacteria.  Intelligent BioLabel Technology( BLT) can do just that.Contact me at aquaplus.se@gmail.com if you wish.