Method for preparing ecological organic fertilizer from organic waste

A technology of organic waste and organic fertilizer, which is applied in the environmental field, can solve the problems of complex process design and equipment, unpassivated heavy metals, and increased dehydration costs, so as to avoid difficult control of odor, accelerate the reproduction speed, and shorten the fermentation cycle. Effect
CN103183541AInactive Publication Date: 2013-07-03ROAD ENVIRONMENT TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ROAD ENVIRONMENT TECH
Publication Date
2013-07-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing an ecological organic fertilizer from organic waste. The method comprises the following steps of putting the organic waste of which the moisture content is within 95% into a subcritical water reaction kettle, adding biomass which is 0-10% of the organic waste, feeding NaOH to the reaction kettle to adjust the pH to 7.5-8.5; leading steam into the reaction kettle, adjusting the temperature to 150-300 DEG C and the pressure to 0.5-5.0MPa to react for 15-60 minutes; baking or dewatering the product until the moisture content is 50-65%; feeding a microbial agent which is 0.5-1% of weight of the product to the baked or dewatered product; evenly mixing and then piling, heating the pile to 60-70 DEG C after 2-3 days to be stable, and carrying out heat preservation at 55-65 DEG C to maintain for 5-7 days, and turning when the temperature exceeds 65 DEG C and preparing the product until the temperature is not changed. By adopting the method, the limitation of the traditional aerobic fermentation is broken through; pathogene can be thoroughly killed; no bad smell or heavy metal pollution appears; the treatment cost is reduced; the treatment efficiency is improved; and the highest target of resource utilization of the organic waste is achieved.
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Description

technical field

[0001] The invention relates to a method for producing ecological organic fertilizer with organic waste in the field of environmental technology. Background technique

[0002] Organic waste mainly includes municipal sludge, animal manure, crop residues, food, alcohol, beverage production waste, wood processing production waste, domestic garbage, etc. These substances mainly contain sugar, protein, cellulose, semi- Substances such as cellulose and lignin have potential utilization value for agriculture.

[0003] At present, the treatment methods of organic waste mainly include the following types:

[0004] 1. Landfill: The method is simple and easy, but because the waste contains harmful substances, it will pollute the groundwater with the erosion and seepage of rainwater, and the landfill needs to occupy a large area, and the construction and transportation costs of the landfill site are high. polluted environment. At the same time, the waste needs to be d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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