Electro-coagulation is the best technology for removal of fat, oil& grease. The BOD and COD removal will be around 70% in the process. If you use biological process, the food to the bacteria will be more and it is very difficult to maintain the bacteria in the biological process, the effluent will be naturally acidic due this can be dangerous to the bacteria. If you can provide us the discharge parameters, we can help with the exact scheme for the safe discharge.
The degree of treatment required depends on the discharge standards you are required to comply with, as well as on the characteristics of the wastewater one is treating. The flowsheet you describe, if properly sized and operated, should be effective in removing total suspended solids as well as associated organic matter (BOD/COD). Not knowing the composition of the influent, it is difficult to know if what you are proposing is optimal or not. If removal of suspended solids is all that is required, your system will probably do the trick. However, if there is significant dissolved BOD or COD that has to be removed, you should be looking at biological treatment. Given the nutrients present in cashews, wastewater will probably be highly biodegradable. Test the effluent for total and dissolved COD, compare with the requirements you need to attain and you will see if additional treatment is needed.
Please confirm water qty. per Day and where do you want to discharge ? we can offer re use of water to reduce fresh water intake. Most economical sustainable solution. Amdy. mtplimited@gmail.com
For cashew nut process, it would be ideal to use bio -remediation for process for both solids and liquids wastes.
If chemicals are used it could be neutralised by bio chemicals viz. Acetic acid or cooking soda.. As phyto remediation process is a must, the plants would take care of the remediation process.
All solids would be bio-origin can be composted in the finishing stage use of worms is encouraged.
Hi Tom, Baleen is best utilised after the Trash Screen for optimum wash water recycle opportunity (for dramatic load reduction and water savings prior to treatment/disposal)... Happy to explore further with you via yuri at baleen dot com Regards, Yuri
I worked for 15 years with the inventors & majority of patents of most of the nutshell filter technologies and we did tests on all nutshells including “peach pits”. I am not aware that their is an advantage to using cashews for filtration. I would be glad to discuss issues further if you wish.