Comprehensive utilization of pit water and treatment of wastewater and waste gas

First, encourage the preferential use of mine water as production water, and use it as an auxiliary water source.

In areas with drought and water shortage, the use of effluent pit water for agricultural and forestry irrigation is encouraged, and the water quality should meet the corresponding standards.

Second, it is advisable to adopt measures such as installing drainage ditch, diversion canal, pre-blocking water, preventing leakage and other measures to prevent or reduce various water sources from entering open pits and underground wells.

Third, it is advisable to adopt engineering measures such as grouting to avoid and reduce mining activities to damage the groundwater balance system.

Fourth, research and promote the efficient treatment process and technology of acid mine pit wastewater, high salinity pit water and special pollutants such as fluorine and manganese .

Fifth, actively promote coal mine gas drainage recycling technology, which is used for power generation, manufacturing carbon black, domestic fuel, manufacturing chemical products.

It is advisable to install dust removal devices, wet operations, personal protection and other measures to prevent dust pollution in mining operations such as rock drilling, shovel loading and transportation.

Abandoned land reclamation

1. Mining enterprises should incorporate the reclamation of abandoned land into the daily production and management of the mine, and advocate the use of mining (selection) ore-dumping (tail)-land-reclaiming technology.

Second, the reclamation of mine abandoned land should be tested for susceptibility, and the most reasonable way to carry out reclamation of abandoned land.

For abandoned mines where pollution exists, it is not suitable for reclamation as a land for agricultural and livestock production; for mine abandoned land that can be developed for agricultural and livestock land, comprehensive monitoring and evaluation should be carried out.

3. Rehabilitation measures such as planting plants and covering should be adopted during the production process of the mine to stabilize the permanent slopes such as open pits, waste rock yards, tailings ponds and waste rock mountains to prevent soil erosion and landslides.

After the expiration of the service of solid waste yards such as waste rock yards, tailings ponds and waste rock hills, they should be closed and reclaimed in time to prevent soil erosion and wind erosion.

4. Encourage the promotion of overburden grouting and the use of tailings and waste rock to fill the goaf and other techniques to reduce the overburden collapse in the goaf.

5. When using bioengineering for reclamation of abandoned land, it is advisable to optimize the design of soil remodeling, topography and landscape, and optimize the selection, configuration and planting methods of the species.

Copper Cut Wire Shot

Copper Shot is common used Metal Abrasive on copper casting parts like copper valve, electrical accessories, copper watch accessories for surface treatment of deburring. In addition, they could also make them have a matte surface.