Presentation on theme: "Spent wash Treatment to Reduce Pollution and to earn profits to help sugar industry & in particular fermentation industry to totally avoid Pollution By."— Presentation transcript:
1 Spent wash Treatment to Reduce Pollution and to earn profits to help sugar industry & in particular fermentation industry to totally avoid PollutionByV. M. KulkarniNovember 10 – 13, 20126th International Sugar ConferenceAswan, EgyptThis template can be used as a starter file to give updates for project milestones.SectionsRight-click on a slide to add sections. Sections can help to organize your slides or facilitate collaboration between multiple authors.NotesUse the Notes section for delivery notes or to provide additional details for the audience. View these notes in Presentation View during your presentation.Keep in mind the font size (important for accessibility, visibility, videotaping, and online production)Coordinated colorsPay particular attention to the graphs, charts, and text boxes.Consider that attendees will print in black and white or grayscale. Run a test print to make sure your colors work when printed in pure black and white and grayscale.Graphics, tables, and graphsKeep it simple: If possible, use consistent, non-distracting styles and colors.Label all graphs and tables.
2 Spent wash facts in India India has more than 550 sugar factoriesCrushing about 160 – 220 million tones caneProduces about 15 – 24 million tones sugarOr produces 6.4 – 8.8 million MT pressed mudOr 7.2 – 10 million MT molassesAverage cane crushing is about 120 – 180 daysDistilleries operate for about 250 – 300 daysVM BIOTECH, Pune, INDIA
3 Spent wash facts in India There are more than 250 distilleries attached to sugar millsCapacity varies 30, 45, 60 and 90 KLPD alcoholThe average capacity can be 50 KLPDThus average spent wash production would be 600 m3 per dayOr 2 million m3 spent wash per year considering only 200 days of operation consuming 1.4 million MT molasses only!VM BIOTECH, Pune, INDIA
4 Spent wash facts in India There is plenty of molasses left untreatedIn other wards there is potential to increase alcohol production by at least 7 times!The greatest limiting factor that hinders the growth of alcohol industry is POLLUTION!And there is no economically viable SOLUTION for this POLLUTIONThis is not limited to India only; it’s a Global Problem without appropriate solutionVM BIOTECH, Pune, INDIA
5 Spent wash facts …. COD - 110000 - 120000 mg/lit BOD mg/litHighly toxic.It is an Environmental hazard.Very difficult to treat.Globally no one has come closer to solve the menace, economically.VM BIOTECH, Pune, INDIA
6 Present treatment(?) process.. Biomethanation to produce biogas.Outlet of treated spent wash has following properties:COD mg/litBOD mg/litTotal solids mg/litColor IUThis is further taken for evaporation!VM BIOTECH, Pune, INDIA
7 Why Evaporation?spraying spent wash to pressed mud for composting is allowed by pollution control board and is found to be the legal way to dispose spent wash.One factory, as an example produces MT pressed mud by crushing about 10 lac MT caneIt has 60 KLPD distillery producing 800 m3 spent wash per day for 300 days!1kg pressed mud can absorb 2.5 liter spent wash, thus volume must be reduced to less than 200 m3 from 800 m3 per dayVM BIOTECH, Pune, INDIA
8 Present process, unsolved issues: The problem of color is not solved, in fact it is aggravated by concentration Such compost, when used in the field, is likely to leach the color contaminating water bodies Huge amount of precious energy is wasted for concentrating the problem Spent wash is highly corrosive; equipment used for concentrating will have to be replaced in few yearsVM BIOTECH, Pune, INDIA
9 VM Biotech technology for spent wash Spent wash after treating in biogas digester is feed to this Novel system.The technology will produce water with parameters as follows..COD less than mg/litBOD less than 1000 mg/litColor less than IU (Transparent yellow to brown/red)And 0.3% solids having about 3100 calorific valueVM BIOTECH, Pune, INDIA
12 VM Biotech technology for spent wash Treated spent wash can be safely used for composting pressed mud that can absorb about 8 – 10 liter treated spent wash per kg pressed mudThus entire quantity of treated spent wash is used for composting, no evaporation.The composting will be complete as there are no inhibitors present and will be of International standard and can be sold at more than INR 8000 per MTVM BIOTECH, Pune, INDIA
13 VM Biotech technology for spent wash Capital cost to treat 800 m3 spent wash is about INR 3.80 CrCost of treatment of entire spent wash for year is about INR 2.40 CrColor problem solved completelyNo evaporation, thus Saves more than INR 20 Cr per yearSeparated solid can generate 4 MW Power every dayHigh Quality compost is bonus!VM BIOTECH, Pune, INDIA
14 VM BIOTECH Technology .. Advantages. Most enviro-friendly treatment process.Low cost, yielding huge profits!No water pollution from distilleryNo evaporation, saves about INR 20 CrGood grade of treated water output.It can be directly used for making international grade compost fertilizer.Problem of color solved completely.The process generates significant profit to treat pollution!VM BIOTECH, Pune, INDIA
15 VM Biotech technology, flexibility Treated spent wash can be concentrated using MEV or RO system to recover waterFinally solids, rich in potash can be recovered as value added productOr concentrated liquid can be used for compostingVM BIOTECH, Pune, INDIA
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