CHAPTER 5 Project Description
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CHAPTER 5 Project Description ENVIRONMENTAL IMPACT ASSESSMENT FOR PROPOSED NEW INSTALLATION OF THERMAL TREATMENT FACILITY FOR CENTRE OF HEALTHCARE WASTE TREATMENT PLANT FOR MEDIVEST SDN BHD AT LOT 6939, 6940, 6947 & 6948, MUKIM TANJUNG MINYAK, DAERAH MELAKA TENGAH, MELAKA CHAPTER 5 – PROJECT DESCRIPTION Chapter 5 PROJECT DESCRIPTION 5.1 Introduction This chapter describes the Project location, components and layout as well as the Project activities. The Project management structure and implementation schedule are also presented. 5.2 Project Location As mentioned in Section 1.2 in Chapter 1, the Project is located within the existing MSB’s centre of healthcare waste treatment plant located at Kawasan Perindustrian Bukit Rambai, Fasa 4C, Mukim Tanjung Minyak, Melaka. The Project location map is as shown in Figure 1.2.1. Approximate coordinates of the Project area are tabulated in Table 1.2.1. 5.3 Project Components and Layout The Project involves planning, construction, installation and operation of a counter-current rotary kiln type incinerator with a capacity to treat 20 MT/day of healthcare waste. This counter-current rotary kiln type incinerator is developed by BIC Systems Asia Pacific Pte Ltd. Generally, the main components of the thermal treatment facility include waste reception and storage, waste combustion, gas cooling, air pollution control and ash receiving and storage system, truck and bin washing system and temporary waste water storage tank. Figure 5.3.1(a) illustrates the current setting of the centre of healthcare waste treatment plant which include the existing components. Meanwhile Figure 5.3.2(b) illustrates the layout of the new thermal treatment facility. The Project components are elaborated in the following sub-sections. 5.3.1 Former Incinerator Plant The existing centre of healthcare waste treatment plant commenced its operation in 1997 using stepped hearth incineration system. During the operation of the former incinerator plant, there were two incinerator lines equipped with respective air pollution control systems. Both incinerators, were stepped hearth system, have the same exact specifications and treatment capacity of 7.2 MT/day (300 kg/hr). MSB has ceased the incinerator operation in March 2016. Abandonment Management Plan was submitted to DOE Negeri Melaka in May 2017 (see Appendix 5.3.1). It was approved on 6 June 2017. Dismantling and removal works were completed on 28 November 2017. Chemsain Konsultant Sdn Bhd Page | C5-1 Revision No. : 0 CK/EV803/8026/18 Revision Date : July 2019 ENVIRONMENTAL IMPACT ASSESSMENT FOR PROPOSED NEW INSTALLATION OF THERMAL TREATMENT FACILITY FOR CENTRE OF HEALTHCARE WASTE TREATMENT PLANT FOR MEDIVEST SDN BHD AT LOT 6939, 6940, 6947 & 6948, MUKIM TANJUNG MINYAK, DAERAH MELAKA TENGAH, MELAKA CHAPTER 5 – PROJECT DESCRIPTION 5.3.2 Existing Components 5.3.2.1 Healthcare Waste Reception Area This area is allocated to house the unloading and weighing of received healthcare waste. It is for temporary storage before further feeding process in the system. 5.3.2.2 Healthcare Waste Storage (Cold Room) At the end of the day, untreated healthcare wastes will be stored in the cold storage area before being processed the following day. There are six existing cold room stores with a capacity of 15 MT each (total capacity of 90 MT), temperature of below 6 °C and 8 holding days. The current practice at the plant is the healthcare wastes bins will be managed based on first in first out order. 5.3.2.3 Microwave Machines There are two microwave machines available at the Project site. Details of the machines are summarised as follows: i. Model AMB Ecosteryl 250 This microwave machine is from Belgium and has a capacity of 6 MT/day. License for operation was obtained in 2016. This microwave machine is currently operating as the main clinical waste treatment facility at the Project site. ii. Model MDS 2481 This microwave machine is from the US. It has a capacity of 9 MT/day or 270 MT/month. License for operation was obtained in May 2018. 5.3.2.4 Infrastructures and Utilities 5.3.2.4.1 Water Supply Water supply requirement for ancillary facilities is estimated at 250m3/month (average). Since the Project site is an existing healthcare waste treatment facility, water supply distribution pipe, water pump house and storm water drainage system are already available on-site. Oil sumps, septic tank, holding tank and sewerline are also already installed at site. 5.3.2.4.2 Electricity Electricity supply requirement for the incinerator is estimated about 50 kWh. Meanwhile for the ancillary facilities the electricity requirement is 80 kWh (average). 5.3.2.4.3 Internet Network The Project site requires internet speed of 4Mbps for computer networking. Chemsain Konsultant Sdn Bhd Page | C5-2 Revision No. : 0 CK/EV803/8026/18 Revision Date : July 2019 Figure 5.3.1(a) Figure 5.3.1(b) ENVIRONMENTAL IMPACT ASSESSMENT FOR PROPOSED NEW INSTALLATION OF THERMAL TREATMENT FACILITY FOR CENTRE OF HEALTHCARE WASTE TREATMENT PLANT FOR MEDIVEST SDN BHD AT LOT 6939, 6940, 6947 & 6948, MUKIM TANJUNG MINYAK, DAERAH MELAKA TENGAH, MELAKA CHAPTER 5 – PROJECT DESCRIPTION 5.3.2.4.4 Storm Water Drainage System There is an existing storm water drainage system around the Project boundary. Storm water within the Project area will be channelled to existing perimeter drainage system and it will be discharged off- site to the existing drainage system available within the Kawasan Perindustrian Bukit Rambai, Fasa 4C. 5.3.2.4.5 Other Facilities Other facilities available at the Project site include main office, scheduled waste store, general room and staff room. 5.3.3 Upcoming Components 5.3.3.1 Incinerator Plant An opened but roofed pad area will accommodate for combustion / incineration process block. Components of the incinerator plant are summarised below: 5.3.3.1.1 Waste Feeding System Automated with minimum manual intervention. Skip hoist system comprises of: a) A hydraulically operated automatic skip hoist mechanism Working pressure hydraulics: 100 barG Hydraulic oil: ARO ISO 46 Max lifting weight (net): 250 Kg b) A hydraulically operated automatic skip tilting mechanism Working pressure hydraulics: 100 barG Hydraulic oil: ARO ISO 46 Max tilting weight (net): 250 kg A bin holding structure: For standard 850 l or 240 l Euro bins c) A weighing unit Maximum load: 1000 kg Precision: 1 kg Chemsain Konsultant Sdn Bhd Page | C5-3 Revision No. : 0 CK/EV803/8026/18 Revision Date : July 2019 ENVIRONMENTAL IMPACT ASSESSMENT FOR PROPOSED NEW INSTALLATION OF THERMAL TREATMENT FACILITY FOR CENTRE OF HEALTHCARE WASTE TREATMENT PLANT FOR MEDIVEST SDN BHD AT LOT 6939, 6940, 6947 & 6948, MUKIM TANJUNG MINYAK, DAERAH MELAKA TENGAH, MELAKA CHAPTER 5 – PROJECT DESCRIPTION Plate 5.3.2: Skip Tilting Mechanism Plate 5.3.3: Bin Weighing Unit Plate 5.3.1: Skip Hoist Mechanism 5.3.3.1.2 Primary Combustion – Feeding Ram System Features of the feeding ram system: . Feed hopper height is 5 meters, from where the waste is introduced. Suitable level indication/switches are incorporated. Suitable weight monitoring system is incorporated. The bottom of the hopper that feeds to the incinerator has interlocks to protect the hopper from the high temperature in the incinerator. The bottom of the hopper is designed sufficiently strong to receive impact from the waste dropping and not bend over time. Dumping the waste from the feed hopper to the incinerator is monitored by the interlock system, so that the incinerator is not overloaded or running without feed. Feeding ram design is trouble free and very versatile. A scraper will be installed to prevent waste from adhering onto the ram. The ram has improved stiffeners to prevent it from bending over time. Cooling water injection is foreseen in the feeding area. Chemsain Konsultant Sdn Bhd Page | C5-4 Revision No. : 0 CK/EV803/8026/18 Revision Date : July 2019 ENVIRONMENTAL IMPACT ASSESSMENT FOR PROPOSED NEW INSTALLATION OF THERMAL TREATMENT FACILITY FOR CENTRE OF HEALTHCARE WASTE TREATMENT PLANT FOR MEDIVEST SDN BHD AT LOT 6939, 6940, 6947 & 6948, MUKIM TANJUNG MINYAK, DAERAH MELAKA TENGAH, MELAKA CHAPTER 5 – PROJECT DESCRIPTION The primary combustion comprises of: Pneumatic cylinder working pressure: 8 barG a) A Feed Hopper: Power supply: 24VDC Length: 1500 mm Width: 1500 mm Height: 2000 mm Mild steel thickness: 10 mm Working pressure: 100 barG b) A Hydraulic Ram: Length: 1250 mm Width: 1000 mm Height: 500 mm Mild steel thickness: 16 mm Working pressure pneumatic cylinder: 8 barG c) A Guillotine Door: Grease type door tracks: graphite or copper powder based Insulation: refractory lined with concrete Mild steel: 6 - 10 mm Length: 250 mm Width: 1500 mm Height: 2100 mm Refractory steel back plate: Included Plate 5.3.4: Feeding Hopper Plate 5.3.5: Hydraulic Ram Plate 5.3.6: Guillotine Door Chemsain Konsultant Sdn Bhd Page | C5-5 Revision No. : 0 CK/EV803/8026/18 Revision Date : July 2019 ENVIRONMENTAL IMPACT ASSESSMENT FOR PROPOSED NEW INSTALLATION OF THERMAL TREATMENT FACILITY FOR CENTRE OF HEALTHCARE WASTE TREATMENT PLANT FOR MEDIVEST SDN BHD AT LOT 6939, 6940, 6947 & 6948, MUKIM TANJUNG MINYAK, DAERAH MELAKA TENGAH, MELAKA CHAPTER 5 – PROJECT DESCRIPTION 5.3.3.1.3 Primary Combustion – Incinerator Features of the incinerator: . The incinerator is equipped with a diesel oil burner, which will start automatically when the temperature in the kiln drops below a preset value. There is a robust and foolproof ash collection system for the incinerator. No ash/ partially burned waste shall be dropped from any part of the incinerator. A liquid injection system for the liquid waste is included. The incinerator comprises: a) A Stationary Part A stationary part that links the feed system to the rotary kiln and serving as a flue gas collector between the kiln and the post combustion chamber (mild steel sheet of 6 - 8 mm and is lined with an 85 % alumina containing refractory concrete).