Environmental Impact Assessment of Construction and Demolition Waste Recycling in Shenzhen
Construction and demolition (C&D) waste recycling can bring significant environmental benefits. This paper analyzes the environmental costs and environmental benefits of inert C&D waste recycling using Life Cycle Assessment method. Taking a C&
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Environmental Impact Assessment of Construction and Demolition Waste Recycling in Shenzhen Jingru Li, Ruirui Xia, Jun Li and Guozhou Chen
Abstract Construction and demolition (C&D) waste recycling can bring significant environmental benefits. This paper analyzes the environmental costs and environmental benefits of inert C&D waste recycling using Life Cycle Assessment method. Taking a C&D waste recycling company in Shenzhen as example, the estimation reveals that recycling per ton of inert C&D waste can bring environmental net benefit of 5.14 yuan. The results provide a useful reference for the development of economic policies on C&D waste recycling. Keywords Construction and demolition (C&D) waste assessment (LCA) Environmental impact Shenzhen
97.1
Recycling Life cycle
Introduction
Recent years have witnessed a significant amount of construction and demolition (C&D) waste as a result of rapid urbanization and large scale of construction activities in China. It is estimated that the volume of C&D waste generated from new construction projects and old building demolition is approximately 0.4–1.7 billion tons every year [1, 2]. The emissions of Beijing, Shanghai and other big cities are at least 30 million tons [1]. Many cities begin or have been facing the pressure of C&D waste landfill. With the increasing of people’s environmental awareness, simple landfill of C&D waste cannot meet people’s demands, because waste landfill not only takes up valuable land resources, but also brings potential threat to the soil,
J. Li (&) R. Xia School of Civil Engineering, Shenzhen University, 518060, Shenzhen, China e-mail: [email protected] J. Li G. Chen Zhongcheng Green Building Technology Co. Ltd, 518060, Shenzhen, Guangdong, China © Springer Science+Business Media Singapore 2017 Y. Wu et al. (eds.), Proceedings of the 20th International Symposium on Advancement of Construction Management and Real Estate, DOI 10.1007/978-981-10-0855-9_97
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water, air in the surrounding [3]. In this respect, boosted recycling of C&D waste is required by the China’s “Twelfth Five-Year Plan”. Compared with the simple landfill, C&D waste recycling can significantly reduce energy consumption and greenhouse gas emissions, bring significantly environmental benefits [4, 5]. Generally, both at home and abroad, the main barriers for recycling of C&D waste are the low cost of landfill and raw materials, which decrease the demand for recycled aggregate and the interest in developing business from recycling [6–8]. Therefore, it is necessary to estimate the external environmental benefits brought from C&D waste recycling so that the government can promote enterprises’ enthusiasm towards waste recycling through the reasonable financial subsidies, tax incentives and other economic policy C&D waste.
97.2
Construction and Demolition Waste
97.2.1 The Definition of C&D Waste Construction and demolition (C&D) waste is defined by The Technical Code for Construction Waste Reduction of Shenzhen as waste which arises from construction,
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