Porous haydite used as waste water filter medium for lake sludge

Yongjia He; Qiang Zhao; Linnu Lu; Shuguang Hu

doi:10.1007/s11595-013-0728-z

Journal of Wuhan University of Technology Materials Science Edition ›› 2013, Vol. 28 ›› Issue (3) : 544 -547. DOI: 10.1007/s11595-013-0728-z

Article

Porous haydite used as waste water filter medium for lake sludge

Yongjia He ¹^,⁴^,^{^a}
, Qiang Zhao ³
, Linnu Lu ¹^,²
, Shuguang Hu ¹^,⁴

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Abstract

Porous haydite used as waste filter medium was prepared by dreging lake sludge to help solve the treatment problem of sludge and realize its reclamation. Several calcination regimes were considered and their effects on the pore structure and the properties such as the strength, the density, the filtering ability and the phosphate absorption ability of the haydite were investigated. For the mixture of 60% lake sludge and 40% fly ash in this experiment, the calcination regime with a pre-calcination period at about 600 °C, a temperature keeping period at 1 200 °C and a moderate cooling rate are recommended to prepare haydite with reasonable pore structure and good performances for its usage as the waste water filter media.

Keywords

filter medium / haydite / lake sludge / waste water

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Yongjia He, Qiang Zhao, Linnu Lu, Shuguang Hu. Porous haydite used as waste water filter medium for lake sludge. Journal of Wuhan University of Technology Materials Science Edition, 2013, 28(3): 544-547 DOI:10.1007/s11595-013-0728-z

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