ENV 506 Integrated Solid Waste Management

1. ENV 506Integrated Solid Waste Management A report on the visit to Bukit Tagar Sanitary Landfill (BTSL) [6th September 2007] ZUFADZLI BIN ZAKARIA 2005390304 HS223/07. UiTM Jalan Othman.

2. 1. INTRODUCTION The Stake Holders KUB-Berjaya Enviro Sdn. Bhd. (KBE) • Joint-venture company between KUB Malaysia Berhad and Berjaya Corporation Berhad. • Public listed company (Plc.), listed on Kuala Lumpur Stock Exchange (KLSE) Supervision Government of Malaysia • Ministry of Housing and Local Government

3. 2. LOCATION • Hulu Selangor district • Approximately 50Km north of Kuala Lumpur • Developed on 700 acres land area • 1,000 acres of buffer zone • Surrounded by palm plantation • Accessible from North-South Expressway (PLUS) via Bukit Tagar Interchange (Exit 113B)

4. Location Map

5. BTSL Plan

6. BTSL Phases

7. 3. DESIGN AND FACILITIES • Fully engineered Level IV landfill with complete High Density Polyethylene (HDPE) membrane liner • Leachate collection and treatment systems • Comprehensive ground and surface water monitoring systems • 17 phases over 40 years • 120 million metric tones of air space capacity • Serves municipal and non-toxic (scheduled) solid waste for Central region of Selangor and Kuala Lumpur • Primarily routed from Kuala Lumpur Solid Waste Transfer Station in Kepong

8. BTSL Schematic Design

9. 3.1 Landfill Operation • Manpower: 45. Headed by Operations General Manager. Three shifts, seven days a week (24-hours) • 24-hours security patrols and checkpoint for screening of incoming wastes • Smartcard systems for vehicle identification and data logging • Full range of trucks and compactors

10. 3.2 Leachate Management • Leachate Treatment Plant Features • Treatment capacity – 1,000 cubic meters per day • Four leachate holding ponds – 180,000 cubic meters leachate storage capacity • SCADA systems; computerized and automated controls of pumps and valves • Primarily biological reaction with series of chemical dosing • Equipped with four Sequential Batch Reactor (SBR) lagoons continue…

11. 3.2 Leachate Management …continued • Red beds – consists of phragmites plant capable of absorbing residues in treated leachate • 24 aerators • Chemicals storage and dosing systems • Balancing tanks • Sludge thickener • Dissolved air floatation plant

12. 3.2 Leachate Management • Treated Effluent Management • Zero discharge policy • Treated effluent is irrigated into 120 acres field; allowing the effluent to undergo evapotranspiration and soil moisture retention processes • Leachate Quality Test • Conducted on daily, weekly and fortnightly basis at SBR lagoons • pH, nitrites, nitrates, ammoniacal nitrogen, dissolved oxygen (DO), BOD, COD

13. 3.2 Leachate Management • Gas Monitoring • Waste gas is channeled via pipes and vented to outside environment • No specific gas collection system is currently employed • Future plan includes biogas collection system with biogasification plant to produce electrical energy for BTSL energy requirement

14. 3.3 Environmental Management • Surface Water Management System • Storm water runoff is diverted away from landfill via surface drains towards open water courses, silt traps and detention ponds • Daily earth cover to prevent ilfiltration of rain water • Regular desilting of silt traps

15. 3.3 Environmental Management • Environmental Monitoring • Surface and ground water monitoring on monthly basis • pH, nitrites, nitrates, ammonia, e-coli, suspended solids and trace metals • Ambient air quality and noise levels on quarterly basis • Quarterly Environment Monitoring Reports to be submitted to the DOE • Early Warning and Emergency Containment System (see chapter 3.4)

16. 3.4 Emergency Preparedness • Emergency response system • Leachate containment bund to prevent accidental leachate breakout • Continuous flow meter • Detention dam • Holding ponds • On-going training comprehensive training program to ensure optimum standards • Regular briefing • Trial runs on safety and emergency procedures

17. 4. DISCUSSION • Location of landfill is suitable • Proper, direct and easy access via PLUS expressway • Not far away from Klang Valley • Minute area with sparse human population Continue…

18. 4. DISCUSSION • Superb design and facilities • Fully engineered Level IV landfill • World class technology with computerized, automated and integrated leachate management • Protection to the environment quite well done, but no ISO14001 • Gas monitoring and collection • No collection of waste gas is being employed Continue…

19. 4. DISCUSSION • Environmental monitoring • Good efforts, but monitoring schedule only for quarterly basis • Environmental protection • Good efforts • Health and Safety • Can be improved; holistic medical surveillance of staff • PPE; should be supervised and updated from time to time

20. 5. CONCLUSION • BTSL is a newly operated Level IV landfill with advanced leachate treatment facilities • Currently, only Phase 1 is operational • Accepts municipal, non-hazardous solid waste from Central Region of Selangor and Kuala Lumpur • Future plan include utilization of biogas • Future land use for recreational purpose

21. 6. REFERENCES