Singapore Waste Management
Shi Xiaochen   Nov 30.-0001

Introduction

Growth in Singapore’s population and economy have contributed to an increase in the amount of solid waste disposed of by about seven-fold from 1,260 tonnes a day in 1970. With waste quantities projected to continue increasing with growing affluence and population, Singapore's main challenge in solid waste management is the setting aside of land for waste disposal in view of the limited land stock in Singapore.  Singapore has therefore adopted the following strategies encapsulated in the diagram below for a more sustainable solid waste management system.


Sustainable solid waste management involves the people, private and public sectors. Working hand in hand with these key stakeholders, NEA has developed a range of initiatives and programmes to curb waste growth. At source where the waste is generated, recyclables are sorted and retrieved for processing to conserve resources. The remaining waste is collected and sent to waste-to-energy plants for incineration. Incineration reduces the waste by up to 90 per cent, saving landfill space, and the heat is recovered to produce steam that propels turbine-generators to generate electricity, providing up to 3 per cent of the island’s electricity needs. The incineration ash and other non-incinerable wastes are then transported to the Tuas Marine Transfer Station (TMTS) from where they are barged to Semakau Landfill for final disposal.

Reason to Be Selected

Singapore's integrated solid waste management system focuses on two key thrusts – waste minimisation and recycling, or simply the 3Rs (Reduce, Reuse, Recycle). In land-scarce Singapore, waste-to-energy (WTE) incineration plants offer the best technical solution by reducing waste volume efficiently to conserve landfill space. The 3Rs play a crucial role by preventing waste generation at its source and bringing along numerous benefits

Highlights:

waste minimisation and recycling, the 3Rs (Reduce, Reuse, Recycle)

Details

Waste Collection SystemsPublic Waste Collection Scheme Public waste collectors (PWCs) are appointed by NEA through open tenders to serve domestic and trade premises in Singapore by geographical sectors. The tenders are open to companies that meet the pre-qualification criteria [pdf 85 Kb], and successful bidders are awarded licences to provide waste and recyclables collection services for the respective sectors for seven to eight years. Currently, four PWCs operate in Singapore and serve in the six sectors indicated on the map below.
General Waste Collection systemNEA licenses general waste collectors (GWCs) in Singapore as well. GWCs primarily serve commercial and industrial premises. The type of waste handled by each class of GWC is as follows:
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Solid waste disposal infrastructureIn the 1960s and 1970s, waste was sent to landfills. Then, in the late 1970s, NEA adopted waste-to-energy (WTE) incineration to reduce waste volume by 90 per cent and reduce landfill space. The first WTE plant was commissioned in 1979. Today, there are four WTE plants located at Tuas and Senoko; and an offshore landfill, Semakau Landfill, which receives non-incinerable waste and incineration ash via the Tuas Marine Transfer Station. Waste collectors sending waste to the four WTE plants and Tuas Marine Transfer Station must have a waybill to indicate the type and source of waste.Waste management statistics and overall recycling measuresKey highlightsIn 2018, 7.70 million tonnes of solid waste was generated, about 9,000 tonnes less than in 2017. However, the amount of waste recycled also fell by about 90,000 tonnes to 4.63 million tonnes. Overall, the recycling rate decreased from 61 percent in 2017 to 60 percent in 2018. The decrease in the amount of waste recycled in 2018 was largely due to a significant drop in the quantity of wood waste recycled. On the other hand, there was a significant increase in the quantity of horticultural waste recycled.  The domestic recycling rate increased from 21 percent in 2017 to 22 percent in 2018, while the non-domestic recycling rate decreased from 76 percent to 74 percent in 2018.

 

 

 

Singapore - (City IQ)

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