Substrate improvement of red mud container yard vegetation repairing

Abstract

The invention relates to a matrix improvement method for vegetation restoration of red mud yard, which is characterized in that furfural slag is added to red mud, and the volume proportion percentage of added furfural slag is: 50-70% of red mud and 30-50% of furfural slag. The field planting test proves that the improved red mud can satisfy the growth of many kinds of plants, such as tall fescue, elymus, dogbud root, ryegrass, sandawang, alfalfa, etc., and has been applied to the red mud pile Field dam slope protection greening. The improved red mud can also be used as landscaping soil for mine reclamation or landfill.

Description

technical field

[0001] The invention relates to a matrix improvement method for vegetation restoration of red mud storage yards, which is used for vegetation restoration of red mud storage yards. Background technique

[0002] Alumina production enterprises discharge a large amount of highly alkaline red mud every year, and its pH value is above 10-12. Due to the low comprehensive utilization rate, it can only be stored for a long time, occupying a large amount of land, and consuming more storage yard construction and maintenance management costs, and the alkali-containing waste liquid pollutes the ground surface and water sources, and the surface of the storage yard is prone to dust, causing serious damage to the ecological environment. , directly endanger people's health, and restrict the sustainable development of the aluminum industry. It has been studied to use fluorogypsum and peat to improve high-alkaline red mud, or to add straw and sugar industry waste liquid to red...