| With the rapid development of Chinese economy and urbanization, the construction industry produces a huge amount of construction waste. Construction waste landfill not only takes up a lot of land resources, but also causes the pollution of the soil quality, water and air. With the enhancement of people’s environmental awareness, construction waste landfill method is being criticized.Therefore, "Twelfth Five-Year Plan" had proposed the requirements of construction waste recycling in China.In this paper, life cycle assessment theory and social willingness to pay are used to analyze the environmental impact of Tanglangshan construction waste recycling projectand reach the following conclusions: environmental costs of recycling construction waste is 9.75 yuan per ton;the environmental benefits of utilization of recycled materials is 68.13 yuan per ton; the environmental benefits of reducing construction waste landfill is 5.24 yuan per ton.The total environmental benefit of recycling the construction waste is 73.37 yuan per ton.7.52 times of the environmental cost.Therefore,construction waste recycling project has positive environmental impact.The direct costs, direct benefits, environmental benefits and environmental costs of the Tanglangshan construction wastes recycling project in shenzhen are calculated and then used to the economic cost-benefit analysis of the project.The following results are obtained: the net present value(NPV) of this project is 7328.7 yuan, greater than zero; the benefit-cost ratio is 1.295, greater than one.The results indicate that construction waste recycling project from the perspective of the national economy should invest, and businesses often due to construction waste recycling project financial results are poor are reluctant to invest, the government can benefit the environment by recycling companies to create internalization(subsidies tax cuts, etc.), to promote corporate willingness to invest resource. |
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