As a new sludge reduction technology with a phosphorus removal mechanism, a vibration milling technology that uses iron balls have been applied to the wastewater treatment process. Three anaerobic–aerobic cyclic activated sludge processes: one without sludge disintegration; one disintegrated sludge by ozonation; and the other disintegrated sludge with the vibrating ball mill were compared. Ozonation achieved the best sludge reduction performance, but milling had the best phosphorus removal. This is because iron was mixed into the wastewater treatment tank due to abrasion of the iron balls, leading to settling of iron phosphates. Thus, the simple means of using iron balls as the medium in a vibrating ball mill can achieve both a sludge reduction of half and excellent phosphorus removal. Material balances in the processes were calculated and it was found that carbon components in disintegrated sludge were more resistant to biological treatment than nitrogen.
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Research Article|
January 01 2012
Application of vibration milling for advanced wastewater treatment and excess sludge reduction Available to Purchase
Akira Sano;
1Environmental Restoration and Conservation Technology Section, Research Center for Material Cycles and Waste Management, National Institute for Environmental Studies, Japan
E-mail: [email protected]
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Hiroshi Yamazaki;
Hiroshi Yamazaki
3Ibaraki Pharmaceutical Association, Japan
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Hiroki Inoue;
Hiroki Inoue
4The Building Center of Japan, Japan
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Kai-Qin Xu;
Kai-Qin Xu
1Environmental Restoration and Conservation Technology Section, Research Center for Material Cycles and Waste Management, National Institute for Environmental Studies, Japan
5School of Environmental Science and Engineering, Shanghai Jiao Tong University, China
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Yuhei Inamori
Yuhei Inamori
6Division of Environment System Management, Facility of Symbiotic System Science, Fukushima University, Japan
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Water Sci Technol (2012) 65 (1): 142–148.
Article history
Received:
July 07 2011
Accepted:
August 26 2011
Citation
Akira Sano, Akira Senga, Hiroshi Yamazaki, Hiroki Inoue, Kai-Qin Xu, Yuhei Inamori; Application of vibration milling for advanced wastewater treatment and excess sludge reduction. Water Sci Technol 1 January 2012; 65 (1): 142–148. doi: https://doi.org/10.2166/wst.2011.840
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