›› 2006, Vol. 27 ›› Issue (6): 933-938.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Biochemical effects on permeability of solidified sludge

ZHU Wei1, LI Lei2, LIN Cheng2   

  1. 1. College of Environmental Science and Engineering, Hohai University, Nanjing 210098, China; 2. College of Civil Engineering, Hohai University, Nanjing 210098, China
  • Received:2005-04-26 Online:2006-06-10 Published:2013-11-14

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Abstract: The secondary pollution from sludge is reduced as a result of the lower permeability of sludge treated by the S/S(solidification and stabilization) treated. However with the change of the biochemical condition of the environment, the permeability of solidified sludge will change as well. To evaluate the environmental impact, the biochemical condition of solidified sludge was enhanced; and the permeability test with acid and nutritional filtration liquid was performed on the solidified body. The experimental results showed that increasing the solidification level would lower the permeability of sludge, but the permeability will be increased under acid condition. The permeability change of solidified sludge was not only decided by the total infiltration volume of infiltration liquid but also controlled by the strength of acid; and microorganism activity could remarkably decrease the permeability of solidified sludge.

Key words: sludge, solidification, permeability, acid infiltration liquid, microorganism

CLC Number: 

  • X 53
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