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Porous Haydite Used as Waste Water Filter Medium for Lake Sludge

Porous Haydite Used as Waste Water Filter Medium for Lake Sludge
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摘要 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-caleination period at about 600℃, a temperature keeping period at 1 200 ℃ 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. 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-caleination period at about 600℃, a temperature keeping period at 1 200 ℃ 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.
出处 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2013年第3期544-547,共4页 武汉理工大学学报(材料科学英文版)
基金 Funded by the Fundamental Research Funds for the Central Universities(No.2011-IV-010) the National Natural Science Foundation of China(No.50902106) the Program for New Century Excellent Talents in University of China(No.NCET-10-0660)
关键词 filter medium haydite lake sludge waste water filter medium haydite lake sludge waste water
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