Production of High Performance Haydite from Sewage Sludge
Using sewage sludge to manufacture green high performance haydite was investigated.Sewage sludge was blended with fly ash and river silt,made into raw haydite pellets and sintered.The haydite properties of different mix proportions and sinter parameters were studied.Then microstructure analysis and toxicity characteristic leaching procedure (TCLP) were performed.Results show that reducing sludge percentage of raw pellets decreases water absorption,also makes particle strength and apparent density raise.Increasing preheat temperature enhances particle strength and density while reduces water absorption.Sintered with optimum parameters,density grade of sludge haydite is 700,water absorption is 0.6％,and cylinder compressive strength is 6.6MPa.Microstructure analysis shows enamel surface and internal fine porous structure make haydite lightweight,high strength and low water absorption.And TCLP results show traces of heavy metal content are found in sludge haydite.
haydite sewage sludge mix proportion sinter parameters
ZHANG Zhen-wen LIU Jun-zhe HE Zhi-min ZHOU Hai-hua
Faculty of Architectural,Civil Engineering and Environment,Ningbo University,Ningbo 315211,Zhejiang China
国际会议
哈尔滨
英文
1097-1100
2010-07-24（万方平台首次上网日期，不代表论文的发表时间）