A sandy degraded soil improver prepared from organic waste and active coke

Abstract

A sandy and degraded soil modifier is formed by mixing organic carbon with active coke powder according to a weight ratio of 1:0.1-0.3, wherein the organic carbon is formed by conducting dry distillation on organic wastes. A method for preparing the soil modifier comprises: A) pretreating organic wastes; B) conducting dry distillation on the pretreated organic wastes to form organic carbon; and C) mixing the organic carbon with active coke powder according to a weight ratio of 1:0.1-0.3 to obtain the sandy and degraded soil modifier. Also disclosed is a device for preparing the sandy and degraded soil modifier.

Description

technical field [0001] The invention relates to a sandy degraded soil improvement agent prepared by using organic waste and active coke. [0002] The invention also relates to a preparation method of the above-mentioned desertification degraded soil improver. [0003] The present invention also relates to the application of the above-mentioned sandy degraded soil improver in improving sandy degraded soil. [0004] The present invention also relates to equipment for preparing the above-mentioned sandy degraded soil improver. Background technique [0005] my country produces a huge amount of organic waste every year. According to statistics, Beijing alone produced 1 million tons of sewage treatment plant sludge, 10 million tons of domestic garbage, and 4 million tons of garden waste in 2013. There are more than 1 billion tons of organic waste in the world every year. waste. [0006] Organic waste includes: organic matter in municipal solid waste; agricultural crop stalks, ve...

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Problems solved by technology

[0011] Cow dung, straw, sludge, garbage and other composts produced by traditional processes, although they have high organic matter content and nutrients that promote plant growth, can also play a role in soil improvement, but due to low carbon content and low specific surface area, they cannot play a role. To buffer fertilizer nutrient release and soil pore regulation; cannot improve soil cation availability

Can't increase ground temperature, can't accelerate rooting, can't increase soil aggregate structure, can't improve resistance to wind erosion, can't keep soil moisture, can't increase stress resistance

Although active coke has a high carbon content and a large specific surface area, due to the lack of high organic matter content and nutrients that promote plant growth, it cannot increase the inert calcium in the soil; it cannot increase the organic matter in the soil; it cannot increase the available nutrients in the soil. promote crop growth

[0012] On the one hand, a large amount of desertified and degraded land needs soil amendments to improve; on the other hand, urban life, agriculture, animal husbandry, etc. produce a large amount of organic waste that cannot be treated; the activated coke industry produces a large amount of activated coke powder that cannot be treated; not only causing Huge waste of resources, but also seriously pollute the environment

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