Bioreactor landfills

1. BIOREACTOR LANDFILLS MADE BY: ANKITA PAYAL SONALI FARTIYAL

2. BIOREACTOR LANDFILL -AN INTRODUCTION An innovative technology for biostabilization of municipal solid waste. A controlled landfill where liquid and gas conditions are actively managed in order to accelerate or enhance biostabilization of the waste. Control, monitor and optimize the waste stabilization process rather than simply contain the wastes. It requires certain primary technologies to enhance and control the waste stabilization process like liquid or air addition, temperature, pH and nutrient level.

3. CONVENTIONAL VS. BIOREACTOR LANDFILL Basic principle of conventional landfill is to contain and store the waste Called as “Dry Tomb” landfill Takes about 30-50 years for decomposition Leachate generation and release of landfill gases can pose long term environmental risk Basic principle of a bioreactor landfill is the treatment of waste by decomposition Decomposition occurs in a shorter period of about 5-10 years Tackles some of the major environmental problems

4. TYPES OF BIOREACTOR LANDFILLS

5. AEROBIC BIOREACTOR

6. SURFACE ADDITION SYSTEM

7. INFILTRATION PONDS

8. HORIZONTAL TRENCHES

9. VERTICAL WELLS

10. LANDFILL GASES Direct by-product of anaerobic waste decomposition Gas from anaerobic decomposition of waste is primarily composed of methane (CH4) and carbon dioxide. Other trace components such as water vapor, hydrogen sulfide and a variety of organic chemicals, are also founds in LFG.

11. MONITORING CATEGORIES Liquid Volume Liquid Head on Liner Leachate characteristics Landfill Gas Quality Landfill Gas Volumes Gas Emissions Waste Characteristics Landfill Settlement In-situ Instrumentation

12. MONITORING AND PROPER RECORD KEEPING

13. WHY BIOREACTOR LANDFILLS? WASTE STABILIZATION LEACHATE TREATMENT, CAPITAL AND OPERATING COST POTENTIAL FOR AIR SPACE RECOVERY LANDFILL GAS GENERATION RATES ENVIRONMENTAL IMPACTS POST CLOSURE CARE, MAINTENANCE AND RISKS

14. CHALLENGES Leachate Seepage Temperature Control Gas and Odor Control Fire and Explosions

15. LEACHATE SEEPS

16. NON-TECHNICAL BARRIERS TO THE BIOREACTOR LANDFILLS • Limited regulatory awareness and negative perception. • Dearth of site-specific performance quantification. • Limited availability of project economic assessments. • Insufficient project sustainability experience. • Lack of financing experience. • Extended time expectations for planning permitting and licensing. • Increased regulatory constraints and conditions.

17. THANK YOU