The Transformation of Heavy Metal Be in Activated Sludge Process

Abstract:

Municipalsludge is refers to the product of sewage treatment plant, facing the huge number of municipalsludge, the disposal of the municipalsludge has aroused wide attention of all countries. Many studies consider that urban land use of the municipalsludge is the most effective method, However heavy metal accumulats in the sludge and the environment of the risk with agricultural appears day after day.The purpose of this study is: analysis the transfermation of heavy metals in the activated sludge system of various structures. put forward the solution of reducing heavy metal exceeded in the activated sludge treatment process.It appears that the coagulation can make colloid stabilized and sedimentation, can control the input of the heavy metal effectively; Adsorption of activated sludge to heavy metal is very fast, in 30 min basic reached adsorption balance, probably 80% or more;The change from oxygen to aerobic have great influence on Heavy metal biological adsorption;An aerobic digestion processes can reduce the volume and quality of sludge, but there is no enrichment role to heavy metal in sludge.

• Periodical: Applied Mechanics and Materials (Volumes 178-181)
• Pages: 633-636
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.178-181.633
• Online since: May 2012
• Authors: Feng Chen, Xiu Lian Zhu, Wei Yu
• Keywords: Activayed Sludge Process, Heavy Metal, Transformation

References

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DOI: 10.1016/j.biortech.2005.03.033