Substrate, preparation technology thereof and method for slope greening

Abstract

The invention discloses a substrate, and belongs to the field of slope greening. The substrate comprises the following raw materials in parts by weight: 48-62 parts of municipal solid waste, 8-13 parts of forestry and agricultural residues, 16-23 parts of yellow clay and 18-23 parts of municipal domestic sludge. The substrate is prepared by the following steps: firstly, crushing and sieving the municipal solid waste and the forestry and agricultural residues; secondly, adding microbial inoculum to the municipal solid waste, the forestry and agricultural residues and the municipal domestic sludge, and placing the mixture in an airtight fermentation chamber for fermentation; thirdly, performing gradient fermentation on the municipal solid waste, the municipal domestic sludge and the forestryand agricultural residues, wherein temperature of air flow and oxygen content vary with gradient; sixthly, mixing the yellow clay with the fermented municipal solid waste, municipal domestic sludge and forestry and agricultural residues, performing airtight stacking for 10-15 days, and performing sterilization to obtain the substrate. The substrate can be widely applied to slope greening and control of rocky desertification.

Description

technical field [0001] The invention belongs to the field of slope greening, and in particular relates to a substrate, a preparation process thereof and a method for slope greening. Background technique [0002] Municipal solid waste and municipal sludge are the main carriers of urban pollutants, and the current treatment methods for municipal solid waste and municipal sludge are mainly landfill or incineration. Among them, the landfill method is a waste disposal method in which municipal solid waste or municipal sludge is buried underground, and is the oldest waste disposal method. The landfill method is currently the main way of centralized disposal of municipal solid waste and municipal sludge in my country due to its advantages of simple technology and low treatment cost. However, the landfilled garbage has not been completely harmless, and a large number of bacteria and viruses remain, and there are hidden dangers such as methane and heavy metal pollution: garbage seep...

AI Technical Summary

Problems solved by technology

However, the landfilled garbage has not been completely harmless, and a large number of bacteria and viruses remain, and there are hidden dangers such as methane and heavy metal pollution: garbage seepage will cause secondary pollution, so this method has potential It is more harmful and will bring future troubles to future generations

The garbage incineration method is a traditional garbage disposal method. After the garbage is treated by the incineration method, the garbage can be reduced, the land can be saved, and various pathogens can be eliminated; however, the disadvantages of the incineration method are also obvious, mainly in the following aspects: Its latent pollution is heavier, expensive, complicated to operate and waste of resources.

[0003] In addition, whether it is municipal solid waste or municipal sludge, both contain a large amount of nutrients needed for plant growth, so landfill or incineration to dispose of municipal solid waste or municipal sludge will cause a great waste of resources

On the other hand, Guizhou is a typical karst landform, and a large amount of land is in a state of desertification or stony desertification. In addition, during the construction of roads and houses, a large number of slopes need to be planted with vegetation for greening, but the greening process is still in use. Traditional substrates, traditional substrates are generally composed of humus soil (80%), chemical fertilizers (5%) and yellow clay (15%). Due to the short duration of humus soil and chemical fertilizers, it is not conducive to the long-term growth of plants. , a large amount of humus excavation and use of chemical fertilizers will also lead to further damage to the environment

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