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Liu Yuchen, Wang Lilin, Wu Jun, Yang Gang, Qi Hui, Deng Shihuai. Pollution and source analysis of heavy metals in municipal solid waste in Sichuan[J]. Chinese Journal of Environmental Engineering, 2015, 9(12): 6010-6018. doi: 10.12030/j.cjee.20151258
Citation: Liu Yuchen, Wang Lilin, Wu Jun, Yang Gang, Qi Hui, Deng Shihuai. Pollution and source analysis of heavy metals in municipal solid waste in Sichuan[J]. Chinese Journal of Environmental Engineering, 2015, 9(12): 6010-6018. doi: 10.12030/j.cjee.20151258
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Pollution and source analysis of heavy metals in municipal solid waste in Sichuan

  • 1.

    Sichuan Key Laboratory of Agricultural Environmental Engineering, College of Environment, Sichuan Agricultural University, Chengdu 611130, China

  • Received Date: 29/09/2014
    Accepted Date: 11/09/2014
    Available Online: 23/12/2015
    Fund Project:
  • As the biggest grain producing province in southwest China, Sichuan has drawn special attention for soil pollution by heavy metals. It is urgent to investigate soil pollution risk brought by municipal solid waste (MSW) disposal. Considering the development of the five major economic zones and varied terrain conditions of Sichuan, MSW of six cities including Chengdu, Yibin, Nanchong, Dazhou, Xichang and Ma'erkang were collected in both summer and winter. Its physical components, heavy metal pollution status of the whole waste and its main components were studied. The results showed that kitchen waste, wrapping paper, toilet paper, plastic and dust were the main components in MSW and accounted for 78.25%—96.92%. Cu (14.23—107.56 mg/kg), Cd (0.07—0.63 mg/kg), Zn (53.77—338.30 mg/kg), Hg (0.01—0.41 mg/kg) and Cr (35.39—179.63 mg/kg) in MSW were relatively high, and might cause soil pollution easily. The pollution loading index (PLI), which was calculated based on soil quality standard of agriculture, indicated that only summer waste of Yibin was at the level of moderate pollution and that the waste of Sichuan was in the range of no pollution in both seasons with a higher summer PLI. Through the measurement of target heavy metal contents in the main physical components of MSW samples, it was found that kitchen waste and dust were the main sources of Cd in Chengdu MSW in summer; dust was one of the main sources of Cu, Zn and Cr in Sichuan MSW and dust from coal burning was the main source of Hg in Xichang MSW in winter.
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Pollution and source analysis of heavy metals in municipal solid waste in Sichuan

  • Received Date: 29/09/2014
  • Accepted Date: 11/09/2014
  • Available Online: 23/12/2015
Fund Project:

Abstract: As the biggest grain producing province in southwest China, Sichuan has drawn special attention for soil pollution by heavy metals. It is urgent to investigate soil pollution risk brought by municipal solid waste (MSW) disposal. Considering the development of the five major economic zones and varied terrain conditions of Sichuan, MSW of six cities including Chengdu, Yibin, Nanchong, Dazhou, Xichang and Ma'erkang were collected in both summer and winter. Its physical components, heavy metal pollution status of the whole waste and its main components were studied. The results showed that kitchen waste, wrapping paper, toilet paper, plastic and dust were the main components in MSW and accounted for 78.25%—96.92%. Cu (14.23—107.56 mg/kg), Cd (0.07—0.63 mg/kg), Zn (53.77—338.30 mg/kg), Hg (0.01—0.41 mg/kg) and Cr (35.39—179.63 mg/kg) in MSW were relatively high, and might cause soil pollution easily. The pollution loading index (PLI), which was calculated based on soil quality standard of agriculture, indicated that only summer waste of Yibin was at the level of moderate pollution and that the waste of Sichuan was in the range of no pollution in both seasons with a higher summer PLI. Through the measurement of target heavy metal contents in the main physical components of MSW samples, it was found that kitchen waste and dust were the main sources of Cd in Chengdu MSW in summer; dust was one of the main sources of Cu, Zn and Cr in Sichuan MSW and dust from coal burning was the main source of Hg in Xichang MSW in winter.

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