基于凹土与生物质复合型生物陶粒的制备和特性研究  

Preparation and properties of the attapulgite and biomass composite bio-ceramsite

作　　者：虞筠霄 商凯航 王成[1] 费罗兰 郑尔雅 喻纬华 

机构地区：[1]河海大学环境学院,江苏南京210098

出　　处：《应用化工》2017年第4期720-724,共5页Applied Chemical Industry

基　　金：基金项目:城市核心区水环境改善技术研究与综合示范(2014ZX07305-002);化工园区废水深度生物除磷脱氮关键技术研究与示范(TH2014201)

摘　　要：以凹凸棒土、稻壳粉、粉煤灰制作复合型生物陶粒,讨论物料配比和煅烧条件对陶粒抗压强度、孔隙率的影响。结果表明,陶粒制作的最佳工艺条件为:物料配比凹凸棒土∶稻壳粉∶粉煤灰=70∶22.5∶7.5,煅烧时间1.5 h,煅烧温度600℃。将该复合型生物陶粒应用于反硝化生物滤池处理城镇污水厂污水,挂膜所需时间为8 d,污染物处理效果稳定,且该陶粒制作材料成本、烧制温度相较市售陶粒均有所降低,有望作为新的反硝化滤池填料。Palygorskite, rice husk powder and fly ash to prepare ceramsite. The influence of material ratio, and calcination condition on ceramsite compressive strength and void fraction were investigated. The result showed that the best preparation conditions of the ceramsite by orthogonal experiment：70% of palygors- kite ,22.5 % of rice husk powder,7.5 % of fly ash, the calcination temperature is 600℃, and the calcina- tion time is 1.5 h. On the other hand, bio-ceramsite were used for treating wastewater in the denitrification filter and the time of the hanging membrane is 8 d which means it is suitable to serve as bomedium in the denitrification filter.

关 键 词：凹凸棒土 生物质材料 陶粒 反硝化滤池 

分 类 号：TQ170.9[化学工程—硅酸盐工业] X52[环境科学与工程—环境工程]