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Method for manufacturing organic granular fertilizer by municipal waste compost

A technology for granular organic fertilizer and municipal waste, which is applied in the field of waste resource utilization and fertilizer manufacturing, can solve the problems of large differences in nutrient content and humic acid content, difficulty in large-scale treatment of garbage composting, and large differences in the effect of organic fertilizers. To achieve the effect of durable storage and transportation, convenient application, and improved granulation rate

Active Publication Date: 2013-08-07
SOUND ENVIRONMENTAL RESOURCES
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Problems solved by technology

[0005] Due to the large difference in the effect of organic fertilizers from different sources, the main reason is that the nutrient content and humic acid content in the raw materials are greatly different. The granular organic fertilizers produced by the existing technology have short fertilizer effects, are not resistant to storage and transportation, are inconvenient to apply, and are difficult to scale. waste composting

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  • Method for manufacturing organic granular fertilizer by municipal waste compost

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[0034] This embodiment provides a method for making granular organic fertilizer by ammonification and granulation of garbage compost, using garbage compost as the main raw material to make a granular organic fertilizer, such as figure 1 As shown, the method includes:

[0035] Step 1, pulverization: pulverize the urban waste compost and the weathered coal with a pulverizer respectively, wherein the urban waste compost passes through a 10-mesh sieve, the weathered coal passes through a 60-mesh sieve, and the under-sieve is used for standby;

[0036] The crushing step in the above-mentioned step 1 specifically includes:

[0037] Compost municipal solid waste with a moisture content lower than 35% with a chain crusher and pass through a 10-mesh sieve for standby; weathered coal with a moisture content lower than 20% is pulverized with a ball mill and pass through a 60-mesh sieve for standby;

[0038] Step 2, mixing materials: 50 kg of ammonium bicarbonate, 25 kg of urea and 180 k...

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Abstract

The invention discloses a method for manufacturing an organic granular fertilizer by municipal waste compost, comprising the following steps: taking municipal waste compost as a main raw material; taking weathered coal, ammonium bicarbonate and urea as assistant materials; and smashing, mixing, aminating, prilling, drying and the like by the ammoniation granulation technology to manufacture the municipal waste compost into the organic granular fertilizer. In the ammoniation granulation process, humic acid and other macromolecular organic matters are converted into the free state from the polymerization state under the alkaline environment formed by ammonium bicarbonate; the humic acid and ammonium nitrogen react to generate ammonium humate; a carbonyl group and an amino group in urea react with the carbonyl group, hydroxide radical, the carbonyl group and other functional groups in organic matters to form a hydrogen bonding relationship so as to adsorb and fix nitrogen nutrition to perform the effect of slow release; meanwhile, the cohesiveness of the material is improved, which is favourable for improving granulation rate and product storage and transportation property; the method has a simple technology and can process the waste compost on a large scale; and the manufactured organic granular fertilizer has the advantages of long fertilizer effect, storage and transportation resistance and the like and is convenient to apply.

Description

technical field [0001] The invention relates to a waste resource utilization and fertilizer manufacturing method, in particular to a method for making granular organic fertilizer by composting urban waste. Background technique [0002] In agricultural production, the consumption of chemical fertilizers is huge, but due to a series of reactions such as fixation, decomposition, and volatilization of chemical fertilizers after they are applied to the soil, the utilization rate of fertilizers is low, and the utilization rate of nitrogen fertilizers is only 20-30%. This not only causes waste of nutrient resources, but also causes a series of environmental problems such as soil compaction, secondary salinization, and groundwater pollution. [0003] At present, humic acid-containing fertilizers such as organic fertilizers and organic-inorganic compound fertilizers are gradually accepted and recognized by the agricultural materials market, and are widely used in production. Facts h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00C05F9/00
CPCY02A40/20
Inventor 蔡红
Owner SOUND ENVIRONMENTAL RESOURCES
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