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2016 ISCN Awards: Campus Planning and Management Systems

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Chulalongkorn University: Green University Practice

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2016 ISCN Awards: Campus Planning and Management Systems

  1. 1. Green University Practice for Chulalongkorn University Assoc.Prof. Dr.Chavalit Ratanatamskul Chulalongkorn University Bangkok, Thailand Email: dr_chawalit@yahoo.com
  2. 2. Our Project Team • Project Head: Assoc.Prof. Dr. Chavalit Ratanatamskul Director of Research Unit on Waste Treatment Dept.of Environmental Engineering Project Advisor: 1. Assoc.Prof.Dr. Boonchai Stitmannaithum Vice President of Chulalongkorn University 2. Professor Kazuo Yamamoto The University of Tokyo, Japan Project researcher: - 3 Ph.D. students - 5 Master Degree students
  3. 3. Project Activities • Development and implementation of three prototype anaerobic digesters for co-digestion of food waste and garden waste  organic waste reduction program for three canteens inside the campus • Development and implementation of two prototype wastewater reuse systems  Water reuse program for two high-rise buildings inside the campus • Education program on 3Rs (Reduce, Reuse, Recycle) for campus waste management to staff and students  Staff participation program for sustainable waste management in the campus
  4. 4. Solid waste problem in Thai Society • Odor • Health problem • Pathogen • Environmental problem Air/Water/Soil
  5. 5. Proposed Integrated waste management • Reduce Landfill area • To generate renewable energy Waste Digestion system IncinerationLandfill Heat/Electrici ty Compose
  6. 6. Organic Matter CH4 + CO2 + NH3 +H2 GAS Ratio CH4 50-80% vol. CO2 20-50% vol. H2S 50-5,000 ppm NH3 0-300 ppm O2 <1% vol. N2 1-4% vol H2O 2-5% wt
  7. 7. The major organic solid waste in Chulalongkorn university Food waste from Canteens Rain tree (Chamchuri) leaf Biogas production from co-digestion of food waste and rain tree leaf using single-stage and two-stage anaerobic digesters
  8. 8. The prototype two-stage anaerobic digester for co-digestion of food waste and garden waste
  9. 9. Biogas for cooking in Canteen, Chulalongkorn University Boiling water, Boiling syrup Frying chicken Shop : Somtom P’MikeShop : Drink & Sweet
  10. 10. Detail Single- stage Two- stage Expendi ture Electricity consumption (kWh/day) 0.2 0.3 Electricity (THB/month) 16.669 25.0029 Electricity (THB/Year) 200.023 300.035 Save money Biogas production (m3/day) 100kgs Food waste 8.06 15.36 Biogas convert to LPG (kg per day) (1 m3: 0.45 kg) 3.627 6.912 LPG (THB/day) (1kg : 21.33THB) 77.364 147.43 LPG (THB/Month) (1kg : 23.33THB) 2,320.91 4,422.98 LPG (THB/Year) 27,851.00 53,075.76 Total 27,650.98 52,775.73 Benefit of biogas utilization for each canteen (comparison of single-stage and two-stage anaerobic digesters)
  11. 11. Summary of Digester Performance 1) High biogas production could be achieved due to excellent digester performance for all three canteens. 2) In terms of total solid removal effieciency, it was found that both single-stage and two-stage digesters have high performance for solid reduction up to 80%. ( Solid waste reduction) 3) The digestate from anaerobic digester can be used as soil amendment. 4) High potential of renewable energy (biogas) from waste.
  12. 12. Wastewater Reuse Project: A Prototype IT/BF-MBR (Inclined Tube/Biofilter Membrane Bioreactor) for wastewater reuse from two high-rise buildings, Chulalongkorn University
  13. 13. Pilot plant of The Membrane Bioreactor for Wastewater Reuse from Building, Chulalongkorn University Water reuse for gardening and landscape (already in real application) The system is located at Mahittaladhibet Building, CU
  14. 14. Wastewater IT/BF MBR’s effluent (after treatment)
  15. 15. Parameters Effluent quality Wastewater reuse criteria Toilet flushing Garden watering pH Turbidity (NTU) Odor Appearance E.Coli 7.5-8.3 0 - 0.1 Not unpleasant Not unpleasant Not detected 5.8-8.6 Less than 2 Not unpleasant Not unpleasant Not detected 5.8-8.6 Less than 2 Not unpleasant Not unpleasant Not detected Table 1 Comparison of effluent quality from the IT/BF-MBR reactor with Japanese Ministry of Land, Infrastructure and Transport’s Reuse water quality criteria, 2005
  16. 16. Water reuse for gardening and landscape
  17. 17. Summary of the performance of the developed wastewater reuse system • From the overall results, the IT/BF-MBR system could successfully operated even with a short total HRT of 4.4 hrs. The system could achieve high efficiencies above 99% for turbidity and SS removal. • Stable treatment effiencies of above 90% removal for COD, ammonia nitrogen and total phosphorus could be achieved in long-term operation of the IT/BF-MBR system. • Furthermore, water quality of the treated effluent could comply with the standard of reuse water quality for toilet flushing and garden watering purposes.
  18. 18. Education program on waste management for staff and students • Our program has educated staffs and students by training, exhibition, mass communication to have awareness and knowledge on waste separation at source using 3 Rs (Reduce, Reuse, Recycle) concept. • Food waste is also managed by our staffs and students to promote organic waste recycling program with the university support (financial and policy support)
  19. 19. Thank you

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