Method for preparing organic fertilizer by taking wet garbage as raw material

A technology for organic fertilizers and garbage, applied in the directions of organic fertilizers, fertilization devices, liquid fertilizers, etc., can solve the problems of long production cycle, high production cost, low processing efficiency, etc., and achieve short reaction time, low production cost, and high processing efficiency. Effect

CN111704486AInactive Publication Date: 2020-09-25淄博询知方技术开发有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-09-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of garbage treatment, and discloses a preparation method of an organic fertilizer by taking wet garbage as a raw material, which comprises the following steps: S1, pulverizing the wet garbage by a pulverizer, and forming slurry by a material preparation tank; S2, performing a hydrothermal oxidation reaction on the slurry through an oxidation reaction tank; S3, separating gas in the wastewater through a gas-liquid separation tank; S4, carrying out filter pressing on the wastewater by virtue of a filter press; and S5, drying the filter cake through adryer. The pulverizer disclosed by the invention is used for pulverizing wet garbage; carrying out hydrothermal oxidation reaction on the wet garbage in sequence through an oxidation reaction tank ina high-temperature and high-pressure environment; the organic matters in the wet garbage decompose humic acid, formic acid, acetic acid, lactic acid and the like and are dissolved in the wastewater, the wastewater is sequentially subjected to filter pressing and drying through the filter press and a dryer, water fertilizer and solid organic fertilizer particles are obtained, the reaction time is short, the processing efficiency is high, no foul smell exists, waste heat can be recycled, and the production cost is low.
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Description

technical field

[0001] The invention relates to the technical field of garbage treatment, in particular to a method for preparing organic fertilizer using wet garbage as raw material. Background technique

[0002] With the continuous advancement of urbanization in our country, a large number of people enter the cities, and these people generate a large amount of garbage every day. According to the analysis of garbage components, the wet garbage in residents' homes accounts for about 60% of the total domestic garbage. These wet garbage Including wet garbage such as leftovers, melon rind and fruit stones, fish scales, eggshells, flowers and green plants, meat and bones, expired food, etc. These wet garbage are very easy to rot and rot, and produce unbearable odors. The exterior also looks extremely disgusting after two days. The main components of the odor produced by wet garbage are hydrogen sulfide, ammonia, methyl mercaptan, methylamine, methyl sulfide, etc. These gases a...

Examples

preparation example Construction

[0034] see Figure 1~2 , in the embodiment of the present invention, a kind of organic fertilizer preparation method using wet waste as raw material, preparation method comprises the following steps:

[0035] S1. The wet garbage is sent to the shredder through the belt conveyor for crushing. The crushed garbage is pumped to the material preparation tank, and process hot water is added to the material preparation tank. After mixing and stirring, the temperature is raised to 70-80°C. form a slurry;

[0036] S2. Pump the slurry into the oxidation reaction tank, and heat the slurry in the oxidation reaction tank. The high temperature can speed up the transfer of oxygen and reduce the viscosity of the liquid. At the same time, inject it into the oxidation reaction tank through an air compressor Compress the air, then add acid liquid into the oxidation reaction tank, and continue to stir to carry out the oxidation reaction, so that the organic matter in the wet garbage decomposes h...

Embodiment

[0058] Example: Take 10 samples of solid organic fertilizer granules at different positions by random method, take 300-500g of samples from each sample under sterile conditions, then mix all the samples, and divide into 3 parts according to the quartering method , each not less than 500g, test 3 samples respectively, and detect the effective number of viable bacteria (cfu), organic matter content, water content, pH value, fecal coliform number, roundworm egg death number, arsenic content (As ), cadmium content (Cd), lead content (Pb), chromium content (Cr) and mercury content (Hg), the experimental data are as follows:

[0059] Table 1: The results of the content of each component:

[0060]

[0061]

[0062] The industry standard is the Agricultural Industry Standard of the People's Republic of China NY 884——2012 Microbial Organic Fertilizer (Microbial Organic Fertilizer) 2012-06-06 release 2012-09-01 implementation

[0063] From Table 1, it can be concluded that the nu...