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Bio-waste disposal method and apparatus

A technology of organic fertilizers and mixtures, applied in the preparation of organic fertilizers, organic fertilizers, and the treatment of biological organic parts, etc., can solve the problems of low content of active ingredients, difficult crop absorption, slow absorption and utilization process, etc.

Active Publication Date: 2009-07-01
杨军
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] It can be seen from the above that most of the current preparation methods of organic fertilizers focus on the method of direct microbial fermentation, and the organic fertilizer obtained by this method requires a long fermentation time, low microbial decomposition efficiency of waste organic matter, and low molecular weight. Not easily absorbed by crops
Although there are also reports in the literature that thermal spraying technology is used to prepare organic fertilizers, these methods have low molecular weight of organic fertilizers due to processing conditions, so they still have low content of active ingredients, slow absorption and utilization process, high application rates, and low fertilizer efficiency. Inferior disadvantages
[0016] In view of the many defects existing in the existing organic fertilizers, it is necessary to develop an organic fertilizer with a high degree of low molecular weight, high active ingredient content, easy absorption, high fertilizer efficiency, and low application rate, and a preparation method thereof

Method used

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preparation example Construction

[0056] Such as figure 1 Shown in A, as the first embodiment of the organic fertilizer preparation method of the present invention, comprises the following steps:

[0057] Step 1: Treating the mixture of biological waste and water vapor under heating and pressure;

[0058] Step 2: reducing the pressure of the mixture of biological waste and water vapor in the heated and pressurized state to normal pressure, separating the obtained liquid-solid mixture from the gas, and obtaining a low-molecular liquid-solid mixture that can be used as an organic fertilizer.

[0059] In the above step 1, the heating temperature is 130-190° C.; the pressing pressure is 1.5-1.9 MPa and kept for 1-25 minutes. Preferably, the heating temperature is 135-170° C.; the pressurizing pressure is 1.5-1.75 MPa and kept for 5-20 minutes.

[0060] In said step 2, the shorter the time for reducing the pressure of the mixture of biological source waste and water vapor to normal pressure, the better. Depending...

Embodiment 1

[0105] Example 1 The following sewage sludge is used as raw material to prepare organic fertilizer

[0106] Take down 500kg of sewage sludge, mix it evenly with steam, make the temperature after mixing reach 170°C, and pressure reach 1.85MPa, and keep it for 22 minutes; reduce the pressure of the mixture of sewage sludge and steam to normal within 45 seconds Press to reduce the molecular weight of sewage sludge and obtain a liquid-solid mixture that can be used as an organic fertilizer.

[0107] Table 4 shows the content of various components in the liquid-solid mixture obtained after the sewage sludge is treated by the method of the present invention.

[0108] Table 4

[0109] Analysis Project Content of various ingredients (wt%) Various oligosaccharides >8 Various amino acids, small molecule peptides >10 organic acid 0.40 N 3.60 P 2 o 5 2.78 K 2 o 0.94 CaO 0.18 MgO 0.08 moisture content 50.0

[0110...

Embodiment 2

[0118] Example 2 Preparation of liquid organic fertilizer with bamboo leaves as raw material

[0119] Take 350kg of bamboo leaves, mix it evenly with steam, make the temperature after mixing reach 138°C, and pressure reach 1.45MPa, and keep it for 1 minute; reduce the pressure of the above mixture and steam mixture to normal pressure within 35 seconds, The molecular weight of the mixture is reduced; the obtained product is centrifuged to obtain liquid organic fertilizer.

[0120] Table 7

[0121]

[0122] Table 7 shows the percentage by weight of various components in the liquid organic fertilizer obtained after bamboo leaves are processed by the method of the present invention.

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Abstract

The present invention provides a method for manufacturing an organic fertilizer from biogenic waste and an organic fertilizer obtained by the manufacturing method. The organic fertilizer of the invention has the advantages of high degree of low molecular weight molecule, easy absorption, high fertilizer effect and low application amount.

Description

technical field [0001] The invention provides a method for preparing organic fertilizer from biological waste and the organic fertilizer obtained by the preparation method. The organic fertilizer has high molecular weight, easy absorption, high fertilizer efficiency and low application amount. Background technique [0002] Fertilizers currently used in agriculture include organic fertilizers and chemical fertilizers. Based on the current health concepts of "green" and "environmental protection", people pay more and more attention to food safety, and the demand for pollution-free, safe and hygienic green food is increasing, which makes organic fertilizers popular. [0003] Compared with chemical fertilizers, organic fertilizers have the following characteristics and advantages: [0004] (1) Improve soil structure. Organic fertilizers contain a large amount of organic matter, which can promote the formation of soil aggregate structure, diversify soil pores, and help coordina...

Claims

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Application Information

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IPC IPC(8): C05F11/00C05F17/00
CPCY02W30/40
Inventor 高濑净二杨军
Owner 杨军
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