KR102568848B1 - Method for manufacturing poultry waste fired fertilzer, and poultry waste fired fertilizer manufatured by the method - Google Patents

Abstract

The present invention relates to a method for producing calcined chicken manure fertilizer and calcined chicken manure produced by the method. In particular, the method according to the present invention relates to a method that can lower the nitrogen content and dramatically increase the effective mineral components without the need for fermentation and composting processes.

Description

Method for producing chicken manure fired fertilizer and chicken manure fired fertilizer manufactured by the above method

The present invention relates to a method for producing calcined chicken manure fertilizer and calcined chicken manure produced by the method. In particular, the method according to the present invention relates to a method that can lower the nitrogen content and dramatically increase the effective mineral components without the need for fermentation and composting processes.

Since more than 20 million tons of chicken manure is produced in Korea every year, if it is not recycled as fertilizer, a big problem will occur in the environment. Therefore, each local government is providing subsidies and providing large amounts of compost made from chicken manure to farmers.

Accordingly, various methods are being used to improve the quality of fertilizer in order to use it as a composting fertilizer, but farmers are reluctant to use it due to damage to consecutive crops due to nitrogen generation and low-quality chicken manure that is not sufficiently composted. In addition, due to its significantly lower composition compared to chemical fertilizers, it is considered to have a simple soil improvement function or to support soil strength.

Looking at the current chicken manure composting process and problems, since chicken manure is mixed with manure, the moisture is appropriately adjusted and then treated by fermentation and composting. Since composting is carried out by microorganisms present in manure, it is important to properly maintain the survival conditions of these microorganisms in order to improve the quality of compost and shorten fermentation time.

However, chicken manure has a high nitrogen content, so it tends to generate a high level of ammonia. Ammonia has the property of generating more when temperature and pH are high. When composting livestock manure, the temperature rises due to the heat of fermentation, so the amount of ammonia generated increases.

In other words, nitrogen in chicken manure is in the form of uric acid and is easily converted to ammonia. Therefore, during the composting period, nitrogen must be converted to inorganic nitrogen as much as possible, and after depositing the compost that has completed primary fermentation, it must be allowed to mature for sufficient time and turned over to volatilize ammonia, etc. accumulated in the compost bed.

In general, current chicken manure fertilizers basically have a high nitrogen content, and are low in quality and low in efficiency in terms of processing time, as they require fermentation, rotting, and post-ripening to lower the nitrogen content and suppress ammonia generation to use as fertilizer. It can be said to be a state.

Since the present invention relates to a method of manufacturing fertilizer using chicken manure, and additionally uses shells, prior art literature regarding this is reviewed.

Looking at prior art literature, regarding chicken manure fertilizer, Republic of Korea Patent Publication No. 10-1978615 describes 'a method for producing chicken manure fertilizer and a chicken manure fertilizer manufactured thereby'. Looking at claim 1, 'a first step of mixing sawdust, coffee grounds and nut shells with chicken manure and grinding them; A second step of drying the pulverized mixture at 50 to 100°C and performing primary fermentation at 60 to 100°C, then adding microorganisms and performing secondary fermentation to produce fertilizer powder; A third step of controlling the pH of the fertilizer powder to 8 to 9.5; and a fourth step of producing chicken manure fertilizer particles using the product of the third step. In other words, the main feature is that moisture regulators such as sawdust are mixed with chicken manure, dried, and fermented twice .

Additionally, Republic of Korea Patent Publication No. 10-0878904 describes a 'method for manufacturing fused granular organic fertilizer using concentrated chicken manure, food waste, and marine by-products.' Looking at claim 1, the main feature is fermenting, rotting, drying, pulverizing and pelletizing chicken manure, food waste and marine by-products .

Next, regarding shell fertilizer, Korea Patent Publication No. 10-0430815 describes 'Organic fertilizer manufacturing method using shell alkaline stabilization method'. Looking at claim 2, 'a method for manufacturing organic fertilizer using organic waste such as livestock manure, human waste, food waste and sewage sludge, an organic waste mixing process of crushing and mixing the organic waste, collecting the shell and then washing the shell. A washing step, a shell firing step in which the shells washed in the shell washing step are placed in a heating furnace and heated to 900°C to 1000°C and fired, and the shells fired in the shell firing step are pulverized to process organic substances mixed in the organic waste mixing process. An alkali stabilization process including a shell administration step for administering to the waste, and a drying process in which the stabilization reactant of the organic waste stabilized in the alkaline stabilization process is exposed to air and dried to produce calcium carbonate. A method for manufacturing organic fertilizer using the alkaline stabilization process of shell is described. That is, the main feature is that the fired shell is mixed with organic waste and dried.

In addition, Korean Patent Publication No. 10-2010-0046484 describes a 'method for producing fertilizer using excrement and shell'. Looking at claim 1, 'a first process of removing impurities from organic waste including human waste and livestock waste; A second process of mixing spent shell powder obtained by drying and pulverizing shells, which are stabilizing additives, at high temperature with the organic waste; A third process of adding sawdust as a moisture absorbent and zeolite for adsorbing nitrogen components to the stabilized organic waste; A fourth process of introducing the mixture that has undergone the above process into the fermenter and fermenting it for 7 days by maintaining the internal temperature at 50-60°C while supplying oxygen at a constant level; A fifth step in which the fermented material of the above step is aged for 3 days by spraying sodium hypochlorite while stirring in a stabilization tank; A sixth step of drying the aged fermented material in a hot air dryer and packaging it to make a fermented material with a moisture content of 20% or less and packaging it; A method for manufacturing fertilizer using manure and shell, characterized in that it consists of 'is described. In other words, the main feature is that high-temperature dried shell powder is mixed with organic waste and goes through moisture and nitrogen control, fermentation, maturation and drying processes.

Republic of Korea Patent Publication No. 10-1978615 (registered on May 8, 2019) Republic of Korea Patent Publication 10-0878904 (registered on January 8, 2009) Republic of Korea Patent Publication 10-0430815 (registered on April 28, 2004) Republic of Korea Patent Publication No. 10-2010-0046484 (published on May 7, 2010)

The problem to be solved is to convert chicken manure into organic fertilizer to a state where plants can easily absorb it, so that there is no harm to the living environment and the natural environment by returning chicken manure to nature.

The problem is to provide a manufacturing method that can reduce the nitrogen content in chicken manure and dramatically increase the effective mineral content.

The solution is,

Preparing dry broiler chicken manure and dried laying hen manure with controlled moisture by drying broiler chicken manure and laying hen manure, respectively;

Dry broiler chicken manure, dried laying hen manure and shells are mixed at a weight ratio of 1:2 to 3:0.5, placed in a kiln and fired at 900 to 1300°C for 1 to 3 hours to produce powder with lower nitrogen content and increased phosphorus, potassium and calcium content. manufacturing step; and

A method for producing a chicken manure fired fertilizer comprising: manufacturing a fertilizer containing the powder as an active ingredient.

The solution is,

Preparing dried laying hen manure with controlled moisture by drying laying hen manure;

Mixing dried laying hen manure and shells at a weight ratio of 2 to 3:0.5, placing them in a kiln and firing at 900 to 1,300°C for 1 to 3 hours to produce powder with lower nitrogen content and higher phosphorus, potassium and calcium content; and

A method for producing a chicken manure fired fertilizer comprising: manufacturing a fertilizer containing the powder as an active ingredient.

The solution is,

Putting broiler chicken manure, laying hen manure, and shells into a calciner and firing them at 900-1300°C for 1-3 hours to produce calcined broiler manure with lower nitrogen content, calcined laying hen manure with lower nitrogen content, and calcined shells;

Preparing a powder mixed with roasted broiler chicken manure, fired laying hen manure, and fired shell at a ratio of 1:2 to 4:0.5 to 0.8; and

A method for producing a chicken manure fired fertilizer comprising: manufacturing a fertilizer containing the powder as an active ingredient.

In the above, the step of manufacturing a fertilizer containing powder as an active ingredient is,

It is characterized in that it is manufactured as a powder fertilizer, a pellet fertilizer made by pelletizing the powder, or a solution fertilizer made by turning the powder into a solution.

The solution is,

It is a chicken manure fired fertilizer manufactured by any of the above methods.

The method for producing chicken manure fired fertilizer according to the present invention provides a method for lowering the nitrogen content in chicken manure and dramatically increasing the effective mineral components.

The method for producing chicken manure fired fertilizer according to the present invention is a production method that does not require processes such as fermentation and rotting.

The chicken manure fired fertilizer prepared according to the method according to the present invention contains a trace amount of nitrogen and a high concentration of phosphorus, potassium and calcium, so it not only improves soil strength but also has qualities useful for crop cultivation.

Figure 1 is a photograph of powder obtained by baking laying hen manure and shell together according to Example 2. Figures 2a to 2c are photographs of a celery cultivation experiment using fertilizer according to the present invention.

Terms or words used in this specification and claims should not be construed as limited to their ordinary or dictionary meanings, and the inventor may appropriately define the concept of terms in order to explain his or her invention in the best way. It must be interpreted as meaning and concept consistent with the technical idea of the present invention based on principles.

Therefore, the embodiments, reference examples, and drawings described in this specification are only the most preferred examples of the present invention and do not represent the entire technical idea of the present invention, so they can be replaced at the time of filing the present application. It should be understood that various equivalents and variations may exist.

Reference Example 1. Calcination of laying hen manure

1) The manure excreted by all livestock, including chickens, contains various nutrients such as nitrogen, phosphorus, and potassium because it contains undigested components and digestive metabolic products from the nutrients consumed as feed. Although this raises concerns about environmental pollution caused by livestock manure, the nutrients contained in livestock manure can be beneficially used as an element to increase the land capacity of farmland. In other words, livestock manure compost decomposes slowly in the soil, so its fertilizer effect lasts longer than chemical fertilizers.

2) Because chickens have a short digestive tract, their efficiency in absorbing nutrients from feed is low. However, because excretion is mixed with manure, the concentration of nitrogen in the form of uric acid is high, and other nutrients are also higher compared to other livestock species.

3) The present invention uses chicken manure from laying hens, and the ingredients of livestock manure are as shown in Table 1 below. (Data: Korea Livestock Research Institute, 2000, %)

division moisture N P ₂ O _{5 K2O} CaO MgO Korean beef minute 80.8 0.34 0.29 0.09 0.37 0.11 Urine 95.4 0.48 0.006 0.48 0.01 0.04 milk cow minute 83.9 0.26 0.10 0.14 0.20 0.01 Urine 95.1 0.34 0.03 0.31 0.10 0.05 pig minute 76.3 0.77 0.50 0.25 2.22 1.39 Urine 98.1 0.83 0.07 0.20 - - chicken broiler 73.5 1.21 0.48 0.53 1.51 0.39 laying hens 26.0 0.89 0.26 0.39 0.73 0.18

In other words, it can be seen that the chicken manure from laying hens has less moisture and nitrogen content than the chicken manure from broiler chickens. However, it can be seen that phosphorus, potassium, and magnesium are somewhat lower than broiler chicken manure, and calcium is half that of broiler manure.

4) If laying hen manure is fired in a kiln capable of firing at high temperatures, nitrogen and moisture can be removed more quickly than broiler manure.

Example 1. Preparation of chicken manure firing fertilizer: broiler chicken manure, laying hen manure and shell firing

We plan to manufacture fertilizer using natural organic chicken manure, which contains almost no nitrogen and maintains or increases the content of phosphorus, potassium, and calcium, thereby satisfying both the functions of providing sufficient nutrients and soil remodeling of chemical fertilizers.

Step 1) Put broiler manure into a kiln and dry and bake it at 100-200℃ for 2-3 hours to produce dried broiler manure with moisture removed.

Step 2) Place the chicken manure in a kiln and dry and bake it at 100~200℃ for 1~2 hours to produce dried laying hen manure with moisture removed.

Step 3) Mix dried broiler chicken manure, dried laying hen manure and shells at a weight ratio of 1:2 to 3:0.5, place in a kiln and fire at 900 to 1300℃, preferably 1000 to 1300℃ for 1 to 3 hours to remove nitrogen and phosphorus. , manufactures powdered fertilizer with increased potassium and calcium content.

Through the above steps, it is possible to produce fertilizer that does not require fermentation and rotting, does not affect soil strength by removing nitrogen, and does not generate ammonia.

Step 4) Powdered fertilizer can be used as is, or it can be manufactured into pellet fertilizer or solution fertilizer made by pelletizing powdered fertilizer using natural substances such as agar.

Example 2. Preparation of chicken manure firing fertilizer: firing of laying hen manure and shells

Figure 1 is a photograph of powder obtained by baking laying hen manure and shell together according to Example 2. Unlike Example 1, only laying hen feces was used in addition to broiler feces.

Step 1) Place the chicken manure in a kiln and dry and bake it at 100~200℃ for 1~2 hours to produce dried laying hen manure with moisture removed.

Step 2) Mix dried laying hen manure and shells at a weight ratio of 2-3:0.5, place them in a kiln, and bake at 900-1300℃, preferably at 1000-1300℃ for 1-3 hours to remove nitrogen and reduce the contents of phosphorus, potassium, and calcium. Raise.

Example 3. Preparation of calcined chicken manure fertilizer: mixing of calcined chicken manure powder and calcined shell powder

Unlike Examples 1 and 2, calcined chicken manure powder and calcined shell powder may be prepared separately and mixed.

Step 1) Produce fired broiler chicken manure, fired laying hen manure, and fired shell, respectively.

Step 2) Mix roasted broiler chicken manure, fired laying hen manure, and fired shell in a ratio of 1:2~4:0.5~0.8.

Experimental Example 1. Component analysis of Examples 1 to 3

Nitrogen (N), phosphorus (P205), potassium (K20), and calcium (CaO) in Examples 1 to 3 were analyzed. (Example 1: Dry broiler chicken manure, dried laying hen manure and shells were mixed at a weight ratio of 1:2:0.5 and then fired at 1000°C for 2 hours. Example 2: Dry laying hen manure and shells were mixed at a weight ratio of 2:0.5 and then fired at 1000°C. Calcination for 2 hours, Example 3: Mixing calcined broiler chicken manure, calcined laying hen manure, and calcined shell in a ratio of 1:3:0.5)

division Nitrogen (N) Phosphorus(P205) Potassium (K20) Calcium (CaO) Example 1 0.12% 10.25% 5.21% 47.08% Example 2 0.08% 11.04% 5.78% 52.20% Example 3 0.18% 9.25% 4.28% 45.04%

Looking at the results, the results of Example 2, in which laying hen manure and shell were fired together, were the best. This is basically because laying hen manure does not contain a lot of nitrogen, and also, during the firing process, there is a difference between the chicken manure and shell components. It can be inferred that the chemical reaction had a positive effect.

However, in all of Examples 1 to 3, the nitrogen content was almost eliminated and the phosphorus, potassium and calcium contents were dramatically increased, so it can be evaluated that the quality as a fertilizer was sufficiently improved.

Reference Example 2. Commercial feasibility of chicken manure and shell fertilizer

The advantages of high-quality organic fertilizer manufactured by calcining chicken manure with shells can be summarized in Tables 3 and 4 below.

value of chicken manure Problems in use low moisture content high nitrogen content High nitrogen, phosphoric acid and potassium content difficult fertilization method Raw material for producing high quality organic fertilizer Odor caused by ammonia bacteria Limitations of by-product fertilizer (compost) Currently, chicken manure is used as a raw material, fermented, and then manufactured into a simple by-product fertilizer (compost). Return to resources by converting it into organic fertilizer
A form that is harmless to nature and the human living environment and can be easily absorbed by plants.

Composition and Features Efficacy and Effect Special chicken manure fertilizer composed of 100% natural minerals Root development improves Potassium, phosphorus, and calcium minerals necessary for plant growth There is almost no nitrogen, so crop failure can be avoided. Contains trace amounts of key minerals needed by plants Soil is revived by activating effective microorganisms such as yeast Contains more than 50% of calcined shell calcium Promote crop growth Almost no nitrogen content Becomes a disease-resistant and strong crop Killing of dormant bacteria in chicken manure Fruits improve and production increases. Good continuity of function The sweetness of the fruit improves Good water solubility (liquid special chicken fertilizer available) Nitrogen specific gravity is almost non-existent compared to general chicken manure.

Experimental Example 2. Application example of fertilizer prepared in Example 2

Figures 2a to 2c are photographs of a celery cultivation experiment using fertilizer according to the present invention. The powder of Example 2 was dissolved in water and used. Celery seedlings were grown by adding 1,000 times as much water to the powder and spraying it once a week. Looking at Figure 2a, the right side is a seedling sprayed with fertilizer, and the left side is a seedling without fertilizer sprayed. Figure 2b is a photograph of the celery strain after spraying once a week for the following two months. The right side is the side where fertilizer was spread, and you can see that it is larger than the left side. Figure 2c is a photo comparing roots. You can see that the right root is larger.

So far, the present invention has been examined with a focus on preferred embodiments.

The embodiments described in this specification and the configurations shown in the drawings are related to one of the most preferred embodiments of the present invention, and do not represent the entire technical idea of the present invention, so various equivalents and modifications can be used to replace them. It should be understood that there may be examples.

Therefore, the present invention is not limited to the presented embodiments, and is within the equivalent scope of the technical idea of the present invention and the technical idea described in the patent claims below, as will be recognized by those skilled in the art to which the present invention pertains. There may be embodiments in which various modifications and changes are possible.

Claims (5)

delete Dry laying hen meal consisting of 26% by weight of moisture, 0.89% by weight of nitrogen N, 0.26% by weight of phosphorus pentoxide P2O5, 0.39% by weight of potassium oxide K2O, 0.73% by weight of calcium oxide CaO, 0.18% by weight of magnesium oxide MgO, and 71.55% by weight of other ingredients. Producing dried laying hen manure with controlled moisture;
Mixing dried laying hen manure and shells at a weight ratio of 2:0.5, placing them in a kiln and firing at 1000°C for 2 hours to produce powder with lower nitrogen content and higher phosphorus, potassium and calcium content; and
A method of producing a chicken manure fired fertilizer comprising the step of producing a powder fertilizer, a pellet fertilizer obtained by pelletizing the powder, or a solution fertilizer obtained by dissolving the powder as a fertilizer containing the powder as an active ingredient. delete delete delete