摘要
水体底泥中富集氮、磷、重金属等多种污染元素,粉煤灰以取材方便、处理简单、成本低、效率高等优势,被研究应用于底泥污染吸附材料的制备。文中详细介绍了粉煤灰的结构特点及吸附性能,分析了碱、盐以及CaO对粉煤灰的改性机理,阐述了3种改性粉煤灰材料对底泥以及污染水体中氮、磷、重金属的去除效果,明确了粉煤灰在治理黑臭水体底泥污染中的应用价值。
Water body sediments are rich in various pollutants such as nitrogen,phosphorus,heavy metals,etc.Fly ash is widely used in the preparation of adsorbent materials for sediment pollutant due to its advantages of convenient acquisition,simple processing,low cost,and high efficiency.In this paper,structural characteristics and adsorption properties of fly ash are revealed.Modification mechanism of alkali,salt and CaO on fly ash is also analyzed.Besides,removal effects of nitrogen,phosphorus and heavy metals from three kinds of modified fly ash materials are elaborated,and application value of fly ash in the treatment of sediment pollutants in black and odorous water body is finally clarified.
作者
吴冬冬
邹家乐
刘永剑
周浩
刘梦梦
朱兆亮
WU Dongdong;ZOU Jiale;LIU Yongjian;ZHOU Hao;LIU Mengmeng;ZHU Zhaoliang(Shui Fa Planning&Design Co.,Ltd.,Jinan 250000,China;School of Municipal and Environment Engineering,Shandong Jianzhu University,Jinan 250010,China)
出处
《净水技术》
CAS
2021年第6期13-20,共8页
Water Purification Technology
基金
山东省自然科学基金(ZR2017BEE067)。
关键词
底泥污染物
黑臭水体
粉煤灰
改性
吸附
sediment pollutant
black and odorous water body
fly ash
modification
adsorption
