Journal of Hebei University (Natural Science Edition) ›› 2017, Vol. 37 ›› Issue (1): 80-85.DOI: 10.3969/j.issn.1000-1565.2017.01.012

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A review on leaching risk of land application of urban sewage sludge

XU Chengbin1,DONG Xing1,HUANG Ye1,TIAN Dan2,SUN Xuekai3   

  1. 1.College of Environmental Science, Liaoning University, Shenyang 110036, China; 2.College of Information Engineering, Shenyang University, Shenyang 110044, China; 3.Daqinggou Ecological Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2016-06-30 Online:2017-01-25 Published:2017-01-25

Abstract: In our country,dealing with sewage sludge scientifically and reasonably has become an important and urgent environmental problem.Land application of urban sewage sludge is the most promising way of the disposal.However,sludge contains a variety of heavy metals,organic contaminants and nutrients.It remains unclear whether these pollutants in the sludge may leach into soil and groundwater,and cause harm to human health.In this paper,the risk of heavy metals,organic contaminants and nutrients after the sludge land use were reviewed.The problems in the future development about land application of urban sewage sludge were pointed out.

Key words: urban sludge, leaching, land application, environmental risk

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