摘要
以沈阳细河底泥为研究对象,通过对其成分和矿物组成分析,考察了其制作底泥陶粒的可行性;以陶粒的比表面积和松散容重为考核指标,通过正交试验,确定了陶粒的最佳制作工艺参数。结果表明,细河底泥的主要成分基本满足一般陶粒化学成分的要求,可以用来制作陶粒,其最佳制作条件是细河底泥、碳酸钙、硅酸钠及氧化铝的混合比例为500∶10∶20∶1。在该最佳条件下制作的陶粒比表面积较大,对磷酸盐的吸附量可以达到1 743.75mg/kg,远高于商品陶粒对磷酸盐的吸附量(675.00 mg/kg)。
The component and mineral composition of the sediment from the Xihe River,Shenyang City was analyzed,and the feasibility for producing haydite by the sediment was investigated.The optimal production parameters were confirmed through orthogonal test by using specific surface area and loose bulk density as assessment indicators.The results showed that the main components of the sediment from the Xihe River met the chemical composition requirements of the general haydite basically,and thus the sediment could produce haydite.The optimal mixing ratio of sediment,calcium carbonate,sodium silicate and alumina was 500∶ 10∶ 20∶ 1.Under the optimal condition,the specific surface area of the haydite was larger,and the adsorption capacity of PO43——P was 1 743.75 mgkg,which was much higher than the adsorption capacity of the purchased haydite（675.00 mgkg）.
出处
《环境工程技术学报》
CAS
2011年第4期328-333,共6页
Journal of Environmental Engineering Technology
基金
国家水体污染控制与治理科技重大专项(2008ZX07208-003)
关键词
底泥
陶粒
比表面积
吸附
sediment
haydite
specific surface area
adsorption
