Garden flower soil substrate prepared from sludge and preparation method thereof

Abstract

The invention discloses a garden flower soil substrate prepared from sludge. The soil substrate is prepared from the following raw materials in percentage by weight: 40-60 percent of sludge, 10-20 percent of saw dust, 20-30 percent of mountain flour and 5-10 percent of nitric acid. According to the soil substrate, due to the combination of sludge and nitric acid, harmful bacteria and pathogen in the sludge can be killed by utilizing strong acidity and strong oxidability, sludge smelliness can be inhibited, and late soil repairing can be benefited; sludge is mixed with nitric acid, and polyacrylamide in the sludge is transformed into nitrate nitrogen which can be easily absorbed by plants by utilizing the nitric acid destructiveness for polyacrylamide, so that plant growth is benefited; the pH value of the sludge and nitric acid mixture can be adjusted by utilizing the characteristic that the mountain flour mainly comprises calcium carbonate, so that the garden flower soil substrate can be in a partially neutral sate suitable for growth of plants; and the sludge structure is modified since partial moisture is absorbed by the mountain flour, so that the difficulty for further drying and recycling can be reduced.

Description

technical field [0001] The invention relates to a soil matrix, in particular to a garden flower soil matrix made of sludge and a preparation method thereof. Background technique [0002] No matter in the processing of rock or in the production of machine-made sand, a large amount of granite stone powder will be produced. As a by-product, stone powder is easy to form dust, pollute the environment, and affect air quality. At the same time, the accumulation of a large amount of stone powder occupies a large area of ​​land. Depleted land resources have become even more stretched. As for stone powder itself, it is also a kind of natural resource. If it is piled up idle, the resource is not fully utilized, or the utilization rate is too low, which has caused a burden on our living environment and resource consumption. [0003] Sludge is a by-product of sewage treatment. It is an extremely complex heterogeneous body composed of organic debris, bacterial cells, colloids, various mi...

AI Technical Summary

Problems solved by technology

[0002] Whether it is in the processing of rocks or in the production of machine-made sand, a large amount of granite stone powder will be produced. As a by-product, stone powder is easy to form dust, pollute the environment, and affect air quality. At the same time, the accumulation of a large amount of stone powder occupies a large area of ​​land. Depleted land resources have become even more stretched

As for stone powder itself, it is also a kind of natural resource. If it is piled up idle, the resource is not fully utilized, or the utilization rate is too low, which has caused a burden on our living environment and resource consumption.