Water Conservation and Distillery Effluent Treatment Technologies for ZLD AIDA, New Delhi Feb 26 th & 27 th 2011

1. Water Conservation and Distillery Effluent Treatment Technologies for ZLDAIDA, New DelhiFeb 26th & 27th 2011

2. Application of Perma Membrane Technology in Distillery Industries By Rahul Kesherwani

3. About PERMIONICS • Over 32 years of experience in Membrane Technology • More than 2500 installations in India & abroad • In-house membranes & complete system manufacturing facility • In-house or onsite pilot plant facility to demonstrate performance of various membranes. • Tailor made system design to ensure high performance and long life.

4. PROBLEMS ASSOCIATED WITH DISTILLERY • About 8 to 15 liters of waste water is produced per liter of alcohol production. • Distillery effluent contains high COD & BOD as well as high salts. • The disposal of spent wash is a major problem • It is must to treat wastewater before disposal

5. MEMBRANE TECHNOLOGY • Pressure driven separation process based on size of molecules

6. MEMBRANE APPLICATION IN DISTILLERY • - WASTEWATER RECYCLING • - CONDENSATE RECOVERY • - SPENT LEES TREATMENT • BEER CLARIFICATION PRIOR TO DISTILLATION • COLUMN • - SPENT WASH CONCENTRATION PRIOR TO • EVAPORATOR

7. WASTEWATER RECYCLING HPA membrane Systems have been successful in wastewater treatment. These hydrophilic membranes are capable of taking high COD, BOD load Specially treated & designed thus reducing choking & fouling Spiral wound construction allow higher effective membrane area compared to disk or tubular type

8. Direct Spent wash treatment • Spent wash contains colloidal particles as well as High and Low molecular weight organic matter and inorganic salts • Directly fed to our tailored UF membrane system to concentrate High Mol Wt organic mass and allow low molecular weight organics and inorganic salts to pass through membrane • UF permeate is further treated by HPA series membrane systems

9. Membrane II To Reuse DIRECT SPENT WASH TREATMENT Spent Wash Reject Membrane I Reject Permeate UF Membrane Permeate Reject To Bio Composting To Bio Gas plant

10. Case Study: Effluent treatment after Bio methanation Table – 1.Chemical composition of bio-methanated distillery effluent. • Effluent after Bio methanation fed to HPA membrane system • Permeate of NF system is tinge yellow in color with 50% reduction in COD, BOD & TDS • Reject of NF system ( 30- 35% of feed) will go for Bio Composting • Permeate of HPA is further polished by HPA RO system. • HPA RO Reject is recycled back to HPA NF System

11. WASTE WATER RECYCLING: After Biomethanation Spent Wash Primary Clarifier Reject Membrane I Reject Filter Permeate Membrane II Reject Bio Composting Anaerobic Digester Lamella Clarifier Permeate To Reuse

12. CONDENSATE POLISHING • Liquid effluent collected from evaporator, distillation Section • 85-90% condensate recovery • Permionics Developed Temperature resistant membrane that can be operated upto 70 deg C • Energy Saving Process • Membrane followed by Post treatment will reduce COD upto 90%

13. SPENT LESS Treatment • Spent lees collected from distillation section is rich in COD • Developed membrane which can with stand in alcohol traces. • Reduction in COD & BOD upto 90% with membrane

14. STEPS INVOLVED IN CONDENSATE/ SPENT LESS TREATMENT FEED TANK MCF Bag Filter Membrane Permeate Reject Degasser Filter Press ACF Water To reuse

15. BEER & WINE CLARIFICATION PRIOR TO DISTILLATION • Beer clarification by ceramic micro filtration before distillation will remove • Biomass • Un reacted yeast • Colloidal Particle • Suspended Solids

16. BEER & WINE CLARIFICATION PRIOR TO DISTILLATION • Benefits: • Better efficiency in heat exchange during distillation • Improve in spent wash quality • Low maintenance of distillation column • No yield loss in this process

17. THANK YOU