1、 Is that okay

Coal ash is left after full combustion of coal. It has strong drainage and air permeability, and also contains various trace elements, such as iron oxide, magnesium oxide, calcium oxide and so on. After high-temperature combustion, it basically will not have bacteria residue. It can be used to grow meat and can also be used as fertilizer after ripening

2、 How to use

1. Select: not all coal ash can be used. Usually, the cinder left by coal burning in the factory is hard and contains a lot of heavy metals, so it is not suitable for use. Domestic honeycomb briquette is usually treated, and the content of sulfur and heavy metals is reduced, which can be used as matrix or fertilizer

2. Soaking in water: coal ash shall be soaked in water first. Because it is an alkaline substance, it is unfavorable to the growth of many plants. It can neutralize the pH by soaking in water. In addition, soaking in water can also remove too fine dust to avoid its air permeability

3. Full ripening: if you want to make coal ash into fertilizer, you need to ripen it. Put it together with animal manure or straw and decompose it by high-temperature fermentation. This organic fertilizer is generally used as base fertilizer, which can promote the growth of plants

4. Mixing into basin soil: in addition to being used as fertilizer, coal ash can also be mixed into basin soil to increase the drainage and air permeability of the matrix. However, you can't add too much, otherwise it will cause the loss of water and fertilizer, which is not conducive to its growth