粉煤灰和城市污泥配施对荒漠土壤持水性能影响的实验研究  

EXPERIMENTAL STUDY ON THE WATER-HOLDING CAPACITY OF THE SOIL AMENDED WITH COAL ASH AND SEWAGE SLUDGE

作　　者：李祯[1,2] 李胜荣[1,2] 申俊峰[1] 霍晓君[1,2] 佟景贵[1] 王对兴[1] 罗军燕[2] 

机构地区：[1]中国地质大学地质过程与矿产资源国家重点实验室,北京100083 [2]中国地质大学岩石圈构造,深部过程及探测技术教育部重点实验室,北京100083 [3]内蒙古包头市环境科学研究院

出　　处：《地球与环境》2005年第2期74-78,共5页Earth and Environment

基　　金：中国教育部博士点基金项目(20030491010)

摘　　要：通过模拟降雨及降雨后自然条件下的土壤表面水分蒸发,研究了粉煤灰和城市污泥配施对荒漠土壤持水性能的影响。研究结果表明,施用粉煤灰和城市污泥后的土壤饱和含水率是对照荒漠土壤的1.95倍,持水时间提高7天左右。这对于在干旱缺水的荒漠地区进行植树造林,恢复生态环境,提高有限的水资源利用率,防止荒漠化的扩大具有十分重要的理论指导意义。To study the water-holding capacities of desert soil and the soil amended with coal ash and sewage sludge, experiments were designed to simulate rainfall and natural evaporation. The result indicated that the water-saturation coefficient of the amended soil was much higher than that of the desert soil (about 1.95 times) and the water-holding time of the amended soil was 7 days longer than that of the desert soil. This result is of theoretical significance in improving desert soil for forest-planting.

关 键 词：粉煤灰 城市污泥 持水性能 荒漠土壤 

分 类 号：X7[环境科学与工程—环境工程]