100 mg/L TSS basic contain is nitric acid and benzoic acid.
I want outlet parameters:
pH around 7,
2000 mg/L COD,
25000 mg/L TDS.
What kind of treatment do I have to use? Please give me your important suggestions. Give suggestions for the primary treatment, secondary treatment and tertiary treatment.
Multiple-effect evaporator (MEE) and evaporation are not possible.
Hi Daxesh - quite an effluent you have there. I agree with most of what has been proposed. Just a suggestion that you consider using crushed limestone for your main neutralisation chemical as it is considerably cheaper than lime and works well to increase the pH up to around 6.5. Also you will need an aeration stage after anaerobic digestion to nitrify the ammonias. If you need to remove the resultant nitrates, you will need an additional anoxic step. Your final effluent is still a nasty in terms of TDS and COD - please dispose of it responsibly.
In this case, there is no requirement for desalination. The treatment target is to remove the 90% soluble COD and adjust pH.
The best process would be anaerobic process, which can removal COD by more than 90% easily. Depends on the raw flow rate, liquid temperature, available nutrients and footprint availability that can select anaerobic pond, UASB, or any other kind of anaerobic process. However, before the anaerobic process, sufficient alkalinity should be added to adjust and buffer the pH.
Your water so acidic, has high tds,NH3-N, BOD and COD. My experiences for this quality watet is UASB with Fixed Bioremediation control the PH at 6,5 - 7.0 to favor with aceto bacteria and Methanogen bacteria to produce Methane gas and Nitrogen gas. The removal of COD will reach for 90%-95%, the effluent will must be continued into aerobic digester and the COD will in low level 30-50 ppm.
when i reach to effluent pH 6-7 at that time my TDS level is around 28000 to 29000 mg/L . so at that concentration my Anaerobic biological treatment work successfully?
Sir.......we have very successfully treated effluent from WWTPs in several major cities. We have full engineers reports that could be forwarded. Our product is a 100% fully organic, biodegradable biological enhancer. You would exceed the parameters that you wish for in just about 6 to 8 weeks of use of such solution. It is extremely simple to use and requires very little equipment.
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anaerobic treatment will help. But presence of NH3 will be act as an inhibitor. Hence, need a dual approach - aerobic followed by anaerobic processing of the waste will help.
We suggest you to Neutralize your acidic effluent and maintain pH between 7-8. Add suitable coagulant and flocculent for primary treatment after conducting jar test, which will remove your COD up to 15-25%. You have to treat Primary treated effluent with Anaerobic biological treatment in digester. the digestion time may range from 3 days to 10 days. It is depend on your laboratory trial. Anaerobic treatment removes COD, BOD and ammonical nitrogen successfully. You have to install extended aeration after anaerobic digester with retention time of 3 days. Aeration effluent will charged in Secondary clarifier. Secondary clarifier outlet will pass through MGF and ACF for further Polishing treatment.
Kindly send us effluent quantity (Pick, average and lean flow) on our email climateventure4careu@gmail.com . Also send us your factory address, if it is in india. We will visit your factory and conduct all above trial at your laboratory.
when i reach to effluent pH 6-7 at that time my TDS level is around 28000 to 29000 mg/L . so at that concentration my Anaerobic biological treatment work successfully?
Regarding your case you has to reduce your COD 90%, for this target is necessary get know the source of this Waste water and What is your flow?, probably you need to do jar test and maybe your solution just need DAF system.