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Characterisation of municipal solid waste and its recyclable contents of Guangzhou

Research Centre for Urban Environmental Technology and Management, Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China

Chi-Sun Poon

Research Centre for Urban Environmental Technology and Management, Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China

Waste characteristics are essential data for waste disposal facilities planning and waste management policy formulation. However, waste composition studies are rarely carried out in mainland Chinese cities and even when it does, the methodologies used are not stringent. A yearlong field survey on the physical components of waste and the recyclable in the waste stream has been conducted in Guangzhou to fill the information gap and to provide further experience for waste characterization study in mainland China. It was found that the ash content in the waste stream has decreased considerably. But the proportion of plastic materials in the waste stream has increased and is now comparable to its more urbanized cities. Although this lends support to the recent controls on expanded polystyrene food containers implemented by the Guangzhou environmental protection bureau, more detailed analysis shows that the focus should not only be on disposable food containers, but also on film plastic waste. Furthermore, the abundance of composite materials in the waste stream solicits attention from the waste management authority to step up the monitoring of their generation pattern and to consider imposing control measures.

Key Words: Waste composition • recyclable contents • consumer batteries • waste characterisation study • composite materials • recyclability of waste • Guangzhou • mainland China

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