Discussion on the Application of Coal Gangue in Soil Remediation in Plateau Areas

Abstract

Soil remediation is an important part of ecological environment restoration, especially important in the harsh environmental conditions in the high and cold plateau. Adding special materials to improve the soil environment can improve the soil quality, which is conducive to vegetation growth and ecological improvement. As a solid waste in the process of coal resource development and utilization, coal gangue is also a new type of soil remediation and improvement material, which has natural advantages and great potential in controlling contaminated soil, improving soil quality and improving ecosystem. In this work, Junba Village in the plateau area affected by desertification was taken as the observation location of the restoration test, and two groups of sample plots were set up in the area for comparison tests. One group with coal gangue materials (water retaining agent 120g and coal gangue) was taken as the No. 1 plot, and the control group without coal gangue materials (water retaining agent 120g) was taken as the No. 2 plot. After longterm observation and measurement, the development quantity of vegetation in sample No. 1 (98 dominants and 97 dominants) was obviously better than that in sample No. 2 (38 dominants and 24 dominants) , and the growth status was also better than that in sample No. 1 (0. 6 cm in leaf width of alkali-grass) and that in sample No. 2 (0. 3 cm in leaf width of alkali-grass) . Thus, it can be shown that coal gangue has a positive and effective role in soil remediation in the plateau areas, and it is suggested to popularize the use of soil remediation in other similar environments.