摘要：

以钢铁企业冶炼生铁时产生的高炉水渣为主要原料,添加黏结剂和成孔剂,制得一种轻质高强的新型水渣滤料。通过正交试验确定了水渣滤料制备的最佳配比和最佳工艺条件,制得的水渣滤料主要性能指标均能达到国家标准。将陶粒和水渣滤料分别填加到曝气生物滤池中进行生物挂膜实验,结果表明:运行两周后,水渣滤料对COD和氨氮的去除率分别达到80%和70%以上,且去除效果优于陶粒。

关键词: 水渣, 滤料, 曝气生物滤池, 生物膜

Abstract:

A kind of light-weight and high-strength water quenched slag filter medium has been prepared by using blast furnace water quenched slag produced by smelting pig iron in iron and steel works as main rawmaterial andmixing with adhesives and pore-forming agent.By orthogonal tests，the best ratio and process conditions of water quenched slag filter medium preparation are determined.The main capability indexes of the water quenched slag produced can reach the national standard.The ceramic granules and water quenched slag filter medium are added respectively,to the BAF models for doing bio-film colonization experiments.The results show that after running for two weeks,the removing rates of COD and ammonia nitrogen with the water quenched slag filter medium are above 80% and 70%,respectively. Its removing efficacy is better than ceramic granules.

Key words: blast furnace water quenched slag, filter medium；biological aerating filter, bio-film

中图分类号: 

• X703.1