TABLE OF CONTENT 2. LEACHATE TREATMENT PLANT DESIGN FOR THE PROPOSED PHASE 3 DEVELOPMENT .......................................................................................................................................... 1 2.1. LEACHATE GENERATION AND CHARACTERISTIC STUDY ...................................... 2 2.1.1. Leachate Generation ............................................................................................................. 2 2.1.2. Leachate Characteristic ....................................................................................................... 9 2.2. DESIGN BASIS.......................................................................................................................... 12 2.2.1. Leachate Quantity and Quality ....................................................................................... 12 2.2.2. Limitation of Leachate Treatment.................................................................................. 12 2.3. PROCESS DESCRIPTION ...................................................................................................... 13 2.3.1. Raw Leachate ........................................................................................................................ 13 2.3.2. Anaerobic Biological Treatment: Anaerobic MBBR Tank ....................................... 13 2.3.3. Aerobic Biological Treatment: Moving Bed Biofilm Reactor (MBBR) ................ 13 2.3.3.1. Introduction of BioChip™ MBBR ................................................................................. 13 2.3.3.2. Introduction to the Moving Bed Biofilm Reactor .................................................. 14 2.3.4. Aerobic Biological Treatment: Activated Sludge Process (ASP) ......................... 16 2.3.5. Biological Clarifier ................................................................................................................ 17 2.3.6. Physical-Chemical Treatment .......................................................................................... 18 2.3.7. Filtration System .................................................................................................................. 19 2.3.8. Sludge Management ........................................................................................................... 20 2.4. DESIGN CALCULATION ........................................................................................................ 21 2.4.1. Collection Pond ..................................................................................................................... 21 2.4.2. Anaerobic MBBR Tank 1 / 2 ............................................................................................. 21 2.4.3. Primary Clarifier ................................................................................................................... 22 2.4.4. Buffer Tank ............................................................................................................................. 22 2.4.5. Moving Bed Biofilm Reactor (MBBR Tank) ................................................................. 22 2.4.6. Activated Sludge Process (ASP) ..................................................................................... 31 2.4.7. Degassing Tank .................................................................................................................... 35 2.4.8. Biological Clarifier ................................................................................................................ 35 2.4.9. Clarified Water Sump ......................................................................................................... 36 2.4.10. Mixing Tank 1 / 2 (for RED + OXY Mixing to generate Ferrate VI) .................. 36 2.4.11. Flocculation Tank (for ABSORB Mixing) ...................................................................... 39 2.4.12. Inclined Plate Clarifier (IPC) ............................................................................................ 39 2.4.13. Clarified Water Tank ........................................................................................................... 39 2.4.14. Sand Filter .............................................................................................................................. 39 2.4.15. Filtered Water Tank ............................................................................................................. 40 2.4.16. Sludge Holding Tank ........................................................................................................... 40 2.4.17. Belt Press ................................................................................................................................ 40 2.4.18. Filtrate Sump ......................................................................................................................... 41 2.5. MONITORING OF LTP PERFORMANCE .......................................................................... 42 2.6. DESIGN DRAWINGS .............................................................................................................. 44 2.7. TECHNICAL SPECIFICATION AND SCOPE OF SUPPLY .......................................... 45 2.7.1. Tanks / RC and Structural Works Specifications ...................................................... 45 2.7.2. FRP / HDPE Tanks Specification ..................................................................................... 46 2.7.3. Equipment Specification .................................................................................................... 46 _________________________________________________________________________________________________________ DEIA for the Proposed Phase 3 Development of Sanitary Landfill at Pulau Burung, Seberang Prai Selatan, Pulau Pinang LIST OF FIGURE Figure 2.1-1 Leachate Generation Mass Balance Diagram ................................................... 2 Figure 2.1-2 Leachate Generation (M3/Day) Over Time Duration .................................. 6 Figure 2.1-3 Leachate Generation Areas (Landfill Areas) Of Phase 1 & 2 .................. 7 Figure 2.1-4 Leachate Collection System For The Pulau Burung Sanitary Landfill 8 Figure 2.3-1 Retaining Screen and SS perforated air pipe in MBBR Tank ................. 14 Figure 2.3-2 BioChip after 4 weeks of operation ...................................................................... 15 Figure 2.3-3 BioChip after 16 weeks of operation ................................................................... 15 Figure 2.3-4 Air distribution pipe from air blower to air diffusers inside the ASP Tank ..................................................................................................................................................................... 17 Figure 2.3-5 Surface aerator in the ASP to ensure there is enough oxygen for biological degradation .............................................................................................................................. 17 Figure 2.3-6 Biological Clarifier with Mechanical Scrapping System ........................... 18 Figure 2.3-7 Inclined Plate Clarifier ................................................................................................. 18 Figure 2.3-8 Auto Polymer Preparation ......................................................................................... 20 Figure 2.3-9 Belt Press with polymer conditioning tank, drum thickener and squeezing rolls for drier sludge cake .............................................................................................. 20 Figure 2.3-10 Sludge cake generated from the Belt Press ................................................. 20 LIST OF TABLE Table 2.1-1 Leachate Generation Computation ........................................................................... 4 Table 2.1-2 Leachate Effluent Characteristics Study ............................................................. 10 Table 2.1-3 Parameters Required For Treatment ..................................................................... 11 LIST OF APPENDICES Appendix 2-1 Sampling Location of the Leachate Appendix 2-2 Scientific Publications of Ferrate Vi Treatment Appendix 2-3 RED-OXY + ABSORB (Ferrate VI) Supplier Technical Info Appendix 2-4 Engineering Design Drawings Appendix 2-5 Guidelines of Special Management of Scheduled Wastes _________________________________________________________________________________________________________ DEIA for the Proposed Phase 3 Development of Sanitary Landfill at Pulau Burung, Seberang Prai Selatan, Pulau Pinang 2. Leachate Treatment Plant Design for the Proposed Phase 3 Development _________________________________________________________________________________________________________ DEIA for the Proposed Phase 3 Development of Sanitary Landfill at Pulau Burung, Seberang Prai Selatan, Pulau Pinang PART 2-1 2.1. Leachate Generation and Characteristic Study 2.1.1. Leachate Generation A comprehensive leachate generation projection study has been conducted to quantify the leachate quantity to be fed into the proposed Leachate Treatment Plant (LTP). Figure 2.1-1 depicts in a simplified leachate generation diagram for the proposed LTP. From the figure, it may be noted there are actually 4 sources of leachate influent which shall be fed into the LTP for treatment to meet the permissible discharge limits for the treated effluent stipulated in the Schedule II of the Environmental Quality (Control of Pollution from Solid Waste Transfer Station