Application of bentonite waterproof blanket in phosphorus gypsum waste storage

With the continuous development of industry, the issue of waterproofing for phosphorus gypsum waste storage has become a focal point in the industry. Phosphorus gypsum is a solid waste with high moisture content and strong corrosive properties, posing a serious challenge to the waterproofing and anti-leakage performance of the storage area. In response to this issue, the application of bentonite waterproof blanket has gradually received widespread attention.

（Sinochem Yunlong Co., Ltd. is a phosphogypsum slag warehouse project in Ze Village

The gypsum slag reservoir is located in the old Heilonggou of Yize Village, Kunming City, northern Yunnan Province, and the first stage is a third-class tailings pond with an effective storage capacity of 8,342,700 m³, which meets the 10 years production and storage of the factory.The slurry return pipeline and return water pipeline are approximately 20km each. Bottom anti-seepage of slag storage: from bottom to top, the foundation is leveled and properly compacted, compacted clay, geogrid, 4800g/m² GCL geosynthetic clay liner, 6.3mm tri-axial structure geocomposite drain, 1.5mm HDPE single textured geomembrane, and local use of 600g/m ² geotextile.

After the full anti-seepage treatment of the slag silo, it meets the anti-seepage requirements of the second category general industrial solid waste disposal site. Prevents the pollution of leachate to the surrounding environment, ensuring safe and effective disposal of tailings solid waste without causing secondary pollution to the surrounding environment.The capacity of the phosphogypsum tailings pond is about 20 million meters ³， Our company provides HDPE geomembrane, geotextile, geosynthetic clay liner and other products and is responsible for construction to ensure safe and effective disposal of tailings ）

I. Waterproofing and anti-leakage requirements for phosphorus gypsum waste storage

The main function of the phosphorus gypsum waste storage area is to store phosphorus gypsum, which has high moisture content and strong corrosive properties. Therefore, the waterproofing and anti-leakage performance of the storage area is crucial to the overall environmental and facility conditions. If the storage area experiences leakage, it will not only cause environmental pollution but also cause serious damage to the infrastructure within the storage area.

II. Advantages of bentonite waterproof blanket

Bentonite waterproof blanket is a material specifically developed for waterproofing and anti-leakage requirements, mainly composed of bentonite. Bentonite has water absorption, swelling, ion exchange and other characteristics, which can quickly expand when in contact with water to form a dense waterproof layer. At the same time, bentonite waterproof blanket also has the following advantages:

1. Simple construction: The construction of bentonite waterproof blanket is relatively simple, without the need for special mechanical equipment and professional skills, which can greatly reduce construction costs.

2. Strong corrosion resistance: Bentonite waterproof blanket has strong corrosion resistance and can effectively resist the corrosion of phosphorus gypsum waste.

3. Good environmental performance: Bentonite waterproof blanket does not produce harmful substances during production and use, and is environmentally friendly.

III. Application of bentonite waterproof blanket in phosphorus gypsum waste storage

The application of bentonite waterproof blanket in phosphorus gypsum waste storage can effectively improve the waterproofing and anti-leakage performance of the storage area. Firstly, the bentonite waterproof blanket is laid on the bottom and surrounding areas of the storage area to form a dense waterproof layer. Secondly, for some special areas such as drainage ditches and overflow ports, additional anti-leakage measures such as an additional film-type waterproof layer can be added on top of the waterproof layer. Finally, during other construction operations within the storage area, it is necessary to avoid damaging the already laid bentonite waterproof blanket to ensure its waterproof effect.

IV. Application effects and prospects

The application of bentonite waterproof blanket in phosphorus gypsum waste storage has significantly improved the waterproofing and anti-leakage performance of the storage area. In practical use, bentonite waterproof blanket has shown good stability and durability, effectively reducing leakage in the storage area. At the same time, due to its good environmental performance, the application of bentonite waterproof blanket has been widely recognized.

With the in-depth awareness of environmental protection and energy conservation and the continuous development of related technologies, the application prospects of bentonite waterproof blanket in industries such as phosphorus gypsum waste storage are very promising. In the future, we look forward to seeing more efficient, environmentally friendly, and energy-saving waterproof materials and technologies being widely applied in industrial sectors, providing new solutions for promoting sustainable development in the industry.