CN111875195A - A kind of pig manure biological treatment process and utilization method - Google Patents

Abstract

The invention discloses a pig manure biological treatment process and a utilization method, and belongs to the field of manure treatment. The treatment method of the present invention comprises the following steps: put the pig manure into the manure treatment tank, filter out the large debris through the sundry grille, and then enter the manure concentration tank to precipitate impurities, and add the pig manure from the storage tank in a weight of 0.1-0.4 of the weight of the pig manure. % of the compound bacterial agent, 2-4% of the pig manure weight modifier and 6-11% of the pig manure weight of the admixture, turn on the stirrer and stir for 2-5h to mix well, then ferment at 25-29°C for 48-72h , keep the water content of the fermented product at 50-70%, stir the fermented product for 30-60min every 12h; then ferment it at 28-35 ℃ for 60-96h, the fermented pig manure enters the purification tank, removes harmful substances and enters the solid state Liquid separator, the liquid fertilizer enters the liquid fertilizer collection tank through the liquid fertilizer conveying pipe, and obtains liquid and solid fermented pig manure fertilizer. The pig manure treatment process of the invention can greatly reduce the pollution generated by the breeding site, and combined with the application of solid-liquid two fertilizers, the pig manure can be recycled, which conforms to the concept of environmental protection development.

Description

A kind of pig manure biological treatment process and utilization method

technical field

The invention relates to the field of manure treatment, in particular to a pig manure biological treatment process and a utilization method.

Background technique

In recent years, my country's large-scale and intensive livestock and poultry breeding industry has developed vigorously. The modern closed-type large-scale breeding technology has promoted the high-quality and efficient development of the livestock and poultry breeding industry in my country's cities. The trend of increasing year by year has caused serious environmental pollution such as soil, water and air pollution to the region.

Black soldier flies, saprophytic soldier flies, can feed on livestock manure and domestic waste to produce high-value animal protein feed. Because of its rapid reproduction, large biomass, wide food habit, high absorption and transformation rate, it is easy to manage, It has the characteristics of low feeding cost and good animal palatability, so it can be used for resource utilization. Its larvae are called "Phoenix worms", which have become as famous resource insects as fly maggots, Tenebrio molitors, barley worms, etc., and are popularized all over the world. .

Feeding pigs has a large amount of food, a lot of feces and urine, and the concentration of feces and urine is high. A pig farm with 6,000 pigs consumes about 12 tons of feed every day, produces about 12 tons of pig manure, 19 tons of pig urine, and about 70 to 150 tons of sewage. The amount of sewage discharged from a 10,000-head pig farm is equivalent to that of 25,000 people. In addition, the cod concentration of pig manure and urine sewage is very high, pig manure is about 21000mg/l, pig urine is about 18000mg/l, and sewage is about 12000mg/l. Many government departments and pig farmers lack sufficient understanding of the large amount of manure, urine and sewage from pig farms and the seriousness of pollution. As a result, they only focus on raising pigs regardless of sewage discharge, and treat pollution first. The pollution to the environment can be imagined. At the same time, pig manure treatment technology has always been a big problem in manure treatment. For the new resource-type insect black soldier flies, biological treatment of pig manure is the most ideal treatment method.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a pig manure biological treatment process and utilization method, so as to solve the technical problem that pig manure cannot be fully treated in the prior art.

For this reason, the present invention proposes the following scheme:

A pig manure biological treatment process includes the following steps: S1: put the pig manure into a manure treatment tank, the pig manure first passes through a sundries grid to filter out large debris, and then enters the excrement concentration tank to further precipitate impurities, when the fermentation tank is used. When it is full, add the compound bacterial agent with the weight of 0.1-0.4% of the weight of pig manure, the modifier of 2-4% of the weight of pig manure and the admixture of 6-11% of the weight of pig manure from the storage tank, turn on the mixer and stir for 2-5h Mix well, then ferment at 25-29°C for 48-72h, keep the water content of the fermented product at 50-70%, and stir the fermented product for 30-60min every 12h; increase the temperature and ferment at 28-35°C for 60-96h The fermented pig manure enters the purification tank, removes harmful substances and enters the solid-liquid separator, and the liquid fertilizer enters the liquid fertilizer collection tank through the liquid fertilizer conveying pipe to obtain liquid and solid fermented pig manure fertilizer;

The manure treatment tank is composed of a sundries grill, a manure concentration pool, a fermentation pool, a purification pool, a liquid fertilizer collection pool, a storage tank, a mixer, a solid-liquid separator, and a liquid fertilizer conveying pipe; The excrement concentration tank is connected; the excrement concentration tank is connected with the fermentation tank, a storage tank is arranged on the top of the fermentation tank, there is a stirrer inside the fermentation tank, and the fermentation tank is connected with the purification tank; the purification tank is connected with the solid-liquid separator, and the solid-liquid separator passes through the liquid The fertilizer conveying pipe is connected with the liquid fertilizer collecting tank.

Preferably, in the step S1, a composite bacterial agent with a weight of 0.36% by weight of pig manure is added and mixed.

Preferably, in the step S1, after mixing well, the fermentation is carried out at 27° C. for 62 hours, and the water content of the fermented product is kept at 63%.

Preferably, the compound bacterial agent is obtained by mixing Bacillus stearothermophilus, Streptomyces flavus, Nocardia dulcis and Bacillus subtilis in a mass ratio of 3.1-4.0:1.4-1.9:0.7-1.6:1.1-2.0 .

Preferably, the compound bacterial agent is obtained by mixing Bacillus stearothermophilus, Streptomyces flavus, Nocardia dulcis and Bacillus subtilis in a mass ratio of 3.6:1.7:1.2:1.6.

Preferably, the number of effective viable bacteria in the composite bacterial agent is 700-1.10 billion/g.

Preferably, the modifier is in parts by weight, and includes the following components: 24-37 parts of monopotassium phosphate, 18-19 parts of 2-methyl-2-acrylic acid, 2-chloro-6-trichloromethane 5-8 parts of pyridine, 1-4 parts of sodium nitrophenolate, 2-5 parts of cellulose hydroxyethyl ether.

Preferably, the modifier is in parts by weight and includes the following components: 28 parts of monopotassium phosphate, 114 parts of 2-methyl-2-acrylic acid-114 parts, and 6 parts of 2-chloro-6-trichloromethylpyridine , 3 parts of sodium nitrophenolate, 3 parts of cellulose hydroxyethyl ether.

Preferably, the admixture is in parts by weight and includes the following components: 18-30 parts of urea, 38-62 parts of potassium chloride, and 7-10 parts of deodorant.

A method for utilizing pig manure, characterized in that the pig manure is used in solid fertilizer and liquid fertilizer after being processed.

The beneficial effects of the present invention compared with the prior art include:

1. As can be seen from the data in Table 1, the modifier adding the complete component can effectively promote the growth of King grass, wherein, the optimal embodiment 3 on the plant height, average weight per plant and tiller number is compared respectively. Proportion 4 increased by 26.0%, 10.4%, and 49.3%, indicating that sodium nitrophenolate, 2-chloro-6-trichloromethylpyridine and cellulose hydroxyethyl ether played a corresponding synergistic effect, which could better promote the Growth of grass.

2. The pig manure treatment process of the present invention can greatly reduce the pollution produced by the breeding site, the liquid fertilizer obtained after the treatment can be returned to the field for planting crops, the solid fertilizer can be used to breed black soldier flies, and the black soldier flies can be used to make feed for raising live pigs. , in order to achieve the purpose of circular economy.

3. The manure treatment tank of the present invention has a reasonable structure design and is suitable for promotion and application to various farms, so that farmers can obtain higher economic benefits while reducing the maintenance cost of the farm.

Description of drawings

Fig. 1 is the structural representation of the feces treatment tank of the present invention;

Fig. 2 is a schematic diagram of the utilization method of pig manure after biological treatment of the present invention.

Among them, 1 is the sundries grid, 2 is the excrement concentration pool, 3 is the fermentation pool, 4 is the purification pool, 5 is the liquid fertilizer collection pool, 6 is the storage tank, 7 is the mixer, 8 is the solid-liquid separator, 9 is the Conveying pipe for liquid fertilizer.

Detailed ways

The present invention will be further described in detail below in conjunction with specific embodiments. It should be emphasized that the following description is exemplary only, and is not intended to limit the scope of the invention and its application.

Example 1

A pig manure biological treatment process, comprising the following steps:

S1: Put the pig manure into the manure treatment tank. The pig manure first filters out the large debris through the debris grid 1, and then enters the excrement concentration tank 2 to further precipitate impurities. When the fermentation tank 3 is full, add weight from the storage tank 6 0.1% of pig manure weight compound bacterial agent, 2% pig manure weight modifier and 6% pig manure weight admixture, turn on agitator 7 and stir for 2h to mix evenly, then ferment at 25°C for 48h, keep the fermented product The water content of the fermented material is 50%, and the fermented material is stirred for 30 minutes every 12 hours; the temperature is increased, and the fermentation is carried out at 28 ° C for 60 hours. The fermented pig manure enters the purification tank 4, and after removing harmful substances, it enters the solid-liquid separator 8, and the liquid fertilizer passes through the liquid The fertilizer conveying pipe 9 enters the liquid fertilizer collection tank 5 to obtain liquid and solid fermented pig manure;

The manure treatment tank is composed of a sundries grill 1, a manure concentration tank 2, a fermentation tank 3, a purification tank 4, a liquid fertilizer collection tank 5, a storage tank 6, a mixer 7, a solid-liquid separator 8, and a liquid fertilizer conveying pipe 9. Composition; wherein, the sundries grid 1 is connected with the excrement concentration pool 2; the excrement concentration pool 2 is connected with the fermentation pool 3, the top of the fermentation pool 3 is provided with a storage tank 6, the fermentation pool 3 is internally provided with a stirrer 7, and the fermentation pool 3 is connected to the purification tank 3. The tank 4 is connected; the purification tank 4 is connected with the solid-liquid separator 8, and the solid-liquid separator 8 is connected with the liquid fertilizer collection tank 5 through the liquid fertilizer conveying pipe 9.

The compound bacterial agent is obtained by mixing Bacillus stearothermophilus, Streptomyces flavus, Nocardia dulcis and Bacillus subtilis in a mass ratio of 3.1:1.4:0.7:1.1.

The number of effective viable bacteria in the compound bacterial agent is 700 million/g.

The admixture is in parts by weight and includes the following components: 18 parts of urea, 38 parts of potassium chloride, and 7 parts of deodorant.

The modifier is in parts by weight and includes the following components: 24-37 parts of monopotassium phosphate, 18 parts of 2-methyl-2-acrylic acid-18 parts, 5 parts of 2-chloro-6-trichloromethylpyridine, 1 part of sodium nitrophenolate, 2 parts of cellulose hydroxyethyl ether.

Example 2

A pig manure biological treatment process, comprising the following steps:

S1: Put the pig manure into the manure treatment tank. The pig manure first filters out the large debris through the debris grid 1, and then enters the excrement concentration tank 2 to further precipitate impurities. When the fermentation tank 3 is full, add weight from the storage tank 6 0.4% of pig manure weight compound bacterial agent, 4% pig manure weight modifier and 11% pig manure weight admixture, turn on agitator 7 and stir for 5h to mix well, then ferment at 29°C for 72h, keep the fermented product The water content of the fermented material is 70%, and the fermented material is stirred for 60 minutes every 12 hours; the temperature is increased, and the fermentation is carried out at 35 ° C for 96 hours. The fermented pig manure enters the purification tank 4, and after removing harmful substances, it enters the solid-liquid separator 8, and the liquid fertilizer passes through the liquid The fertilizer conveying pipe 9 enters the liquid fertilizer collection tank 5 to obtain liquid and solid fermented pig manure;

The manure treatment tank is composed of a sundries grill 1, a manure concentration tank 2, a fermentation tank 3, a purification tank 4, a liquid fertilizer collection tank 5, a storage tank 6, a mixer 7, a solid-liquid separator 8, and a liquid fertilizer conveying pipe 9. Composition; wherein, the sundries grid 1 is connected with the excrement concentration pool 2; the excrement concentration pool 2 is connected with the fermentation pool 3, the top of the fermentation pool 3 is provided with a storage tank 6, the fermentation pool 3 is internally provided with a stirrer 7, and the fermentation pool 3 is connected to the purification tank 3. The tank 4 is connected; the purification tank 4 is connected with the solid-liquid separator 8, and the solid-liquid separator 8 is connected with the liquid fertilizer collection tank 5 through the liquid fertilizer conveying pipe 9.

The compound bacterial agent is obtained by mixing Bacillus stearothermophilus, Streptomyces flavus, Nocardia groin and Bacillus subtilis in a mass ratio of 4.0:1.9:1.6:2.0.

The number of effective viable bacteria in the compound bacterial agent was 1.10 billion/g.

The modifier is in parts by weight and includes the following components: 37 parts of monopotassium phosphate, 119 parts of 2-methyl-2-acrylic acid-119 parts, 8 parts of 2-chloro-6-trichloromethylpyridine, 4 parts of sodium phenolate, 5 parts of cellulose hydroxyethyl ether.

The admixture is in parts by weight and includes the following components: 30 parts of urea, 62 parts of potassium chloride, and 10 parts of deodorant.

Example 3

A pig manure biological treatment process, comprising the following steps:

S1: Put the pig manure into the manure treatment tank. The pig manure first filters out the large debris through the debris grid 1, and then enters the excrement concentration tank 2 to further precipitate impurities. When the fermentation tank 3 is full, add weight from the storage tank 6 It is a compound bacterial agent of 0.36% of the weight of pig manure, a modifier of 3.2% of the weight of pig manure and an admixture of 8% of the weight of pig manure. Turn on the mixer 7 and stir for 3 hours to mix evenly, and then ferment at 27 ° C for 62 hours to keep the fermented product. The water content of the fermented material is 63%, and the fermented material is stirred for 45 minutes every 12 hours; the temperature is increased, and the fermentation is carried out at 33 ° C for 72 hours. The fermented pig manure enters the purification tank 4, and after removing harmful substances, it enters the solid-liquid separator 8, and the liquid fertilizer passes through the liquid The fertilizer conveying pipe 9 enters the liquid fertilizer collection tank 5 to obtain liquid and solid fermented pig manure;

The manure treatment tank is composed of a sundries grill 1, a manure concentration tank 2, a fermentation tank 3, a purification tank 4, a liquid fertilizer collection tank 5, a storage tank 6, a mixer 7, a solid-liquid separator 8, and a liquid fertilizer conveying pipe 9. Composition; wherein, the sundries grid 1 is connected with the excrement concentration pool 2; the excrement concentration pool 2 is connected with the fermentation pool 3, the top of the fermentation pool 3 is provided with a storage tank 6, the fermentation pool 3 is internally provided with a stirrer 7, and the fermentation pool 3 is connected to the purification tank 3. The tank 4 is connected; the purification tank 4 is connected with the solid-liquid separator 8, and the solid-liquid separator 8 is connected with the liquid fertilizer collection tank 5 through the liquid fertilizer conveying pipe 9.

The compound bacterial agent is obtained by mixing Bacillus stearothermophilus, Streptomyces flavus, Nocardia groin and Bacillus subtilis in a mass ratio of 3.6:1.7:1.2:1.6.

The number of effective viable bacteria in the composite bacterial agent was 900 million/g.

Preferably, the modifier is in parts by weight and includes the following components: 28 parts of monopotassium phosphate, 114 parts of 2-methyl-2-acrylic acid-114 parts, and 6 parts of 2-chloro-6-trichloromethylpyridine , 3 parts of sodium nitrophenolate, 3 parts of cellulose hydroxyethyl ether.

The admixture is in parts by weight and includes the following components: 25 parts of urea, 51 parts of potassium chloride, and 9 parts of deodorant.

Comparative Example 1

The pig manure biological treatment process is basically the same as that of Example 3, except that 2-chloro-6-trichloromethylpyridine is not added to the modifier.

Comparative Example 2

The pig manure biological treatment process is basically the same as that of Example 3, except that sodium nitrophenolate is not added to the modifier.

Comparative Example 3

The biological treatment process of pig manure is basically the same as that of Example 3, the only difference is that cellulose hydroxyethyl ether is not added to the modifier.

Comparative Example 4

The pig manure biological treatment process is basically the same as that in Example 3, except that 2-chloro-6-trichloromethylpyridine, sodium nitrophenolate and cellulose hydroxyethyl ether are not added to the modifier.

The king grass planting land is divided into 7 groups on average, and each group is 0.5 mu, and the pig manure liquid fertilizers processed by Example 1-3 and Comparative Example 1-4 are used for watering, and the period from April 2018 to April 2019 is carried out for a period of time. One year of planting, in which, each group was irrigated once every 15 days, and the amount of 250kg/mu was applied each time. Each group of king grass was mowed for the first time after 3 months of planting, leaving a stubble of 5 cm. After the first mow, it was mowed every 45 days. By the end of April 2019, a total of 7 times were mowed. On April 25, 2019, 20 plants were randomly selected from each group for measurement. The number of tillers was the total of the whole year, the plant height was the average of the whole year, and the average weight per plant was the average of the whole year. The specific data are shown in Table 1.

Table 1 Planting situation of king grass in 1 year

group Plant height (cm) Average unit weight (g) Number of tillers (bar) Example 1 125.9 352.8 170.5 Example 2 122.7 357.5 161.8 Example 3 128.4 361.2 172.3 Comparative Example 1 119.6 349.0 146.2 Comparative Example 2 115.5 342.7 148.7 Comparative Example 3 117.1 339.6 152.9 Comparative Example 4 101.9 327.1 115.4

From the data in Table 1, it can be seen that the modifier adding complete components can effectively promote the growth of king grass. Among them, the best example 3 in terms of plant height, average weight per plant and number of tillers is compared with comparative example 4. The increase of 26.0%, 10.4% and 49.3% shows that in the pig manure treatment process, 2-chloro-6-trichloromethylpyridine, sodium nitrophenolate and cellulose hydroxyethyl ether play an important role in the growth of king grass facilitation, which may be:

In the sodium nitrophenolate, 2-chloro-6-trichloromethylpyridine and cellulose hydroxyethyl ether contained in the additive modifier; sodium nitrophenolate can promote the flow of cell protoplasm, accelerate the growth and development of plants and enhance the It can also relieve the antagonism between the elements in the multi-trace element fertilizer and improve the absorption rate of plants; it can promote the production of more ATP energy by the plants, promote the synthesis of The absorption of 6-trichloromethylpyridine; 2-chloro-6-trichloromethylpyridine, its function is to inhibit the activity of nitrosating bacteria in the soil, thereby inhibiting the nitrification of ammonium nitrogen in the soil, and making the ammonium nitrogen applied in the soil. Ammonium nitrogen fertilizer can be adsorbed by colloid in the form of ammonium ion for a long time, preventing the leaching and denitrification of nitrate nitrogen, reducing the non-productive loss of nitrogen, and improving the absorption rate of king grass to N , the increase of N content will affect the absorption of sodium nitrophenolate by king grass; cellulose hydroxyethyl ether is a natural polymer, and each fiber base ring contains three hydroxyl groups. The pH of the saturated solution in the micro-domain soil range can reach 1-1.5. The hydroxyl groups in cellulose hydroxyethyl ether and the Ca ions in the soil interact with phosphate ions to generate dicalcium phosphate and octacalcium phosphate, and finally most of them are stable. The hydroxyapatite has a great effect on the stability of soil pH, thereby enhancing the stability of sodium nitrophenolate in the soil. The above shows that sodium nitrophenolate, 2-chloro-6-trichloromethylpyridine and cellulose hydroxyethyl ether play a corresponding synergistic effect, which can better promote the growth of king grass.

The above content is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, they can also make several substitutions or modifications to the described embodiments, and these substitutions or modifications should be regarded as It belongs to the protection scope of the present invention.

Claims (10)

1. a pig manure biological treatment process is characterized in that, comprising the following steps: S1: put pig manure into a manure treatment tank, and the pig manure first passes through the sundries grid to filter out large debris, and then enters the excrement concentration tank for further treatment. Precipitate impurities, when the fermentation tank is full, add a compound bacterial agent with a weight of 0.1-0.4% by weight of pig manure, a modifier of 2-4% by weight of pig manure and an admixture of 6-11% by weight of pig manure, open the Stir with a stirrer for 2-5h to mix evenly, then ferment at 25-29°C for 48-72h, keep the water content of the fermented product at 50-70%, and stir the fermented product for 30-60min every 12h; increase the temperature, at 28-35 Fermentation at ℃ for 60-96h, the fermented pig manure enters the purification tank, removes harmful substances and then enters the solid-liquid separator, and the liquid fertilizer enters the liquid fertilizer collection tank through the liquid fertilizer conveying pipe to obtain liquid and solid fermented pig manure fertilizer; The manure treatment tank is composed of a sundries grill, a manure concentration pool, a fermentation pool, a purification pool, a liquid fertilizer collection pool, a storage tank, a mixer, a solid-liquid separator, and a liquid fertilizer conveying pipe; The excrement concentration tank is connected; the excrement concentration tank is connected with the fermentation tank, a storage tank is arranged on the top of the fermentation tank, there is a stirrer inside the fermentation tank, and the fermentation tank is connected with the purification tank; the purification tank is connected with the solid-liquid separator, and the solid-liquid separator passes through the liquid The fertilizer conveying pipe is connected with the liquid fertilizer collecting tank. 2 . The pig manure biological treatment process according to claim 1 , wherein in the step S1 , a compound bacterial agent with a weight of 0.36% by weight of the pig manure is added and mixed. 3 . 3 . The pig manure biological treatment process according to claim 1 , wherein, in the step S1 , after mixing well, ferment at 27° C. for 62 hours to keep the water content of the fermented product at 63%. 4 . 4. pig manure biological treatment process as claimed in claim 1, is characterized in that, described compound bacterial agent is by mass ratio 3.1-4.0 by Bacillus stearothermophilus, Streptomyces flavus, Nocardia ditch, Bacillus subtilis : 1.4-1.9: 0.7-1.6: 1.1-2.0 mixed. 5. pig manure biological treatment process as claimed in claim 1 or 4, is characterized in that, described compound bacterial agent is by mass ratio of Bacillus stearothermophilus, Streptomyces flavus, Nocardia ditch, Bacillus subtilis by mass ratio 3.6 : 1.7: 1.2: 1.6 mixed. 6. The pig manure biological treatment process as claimed in claim 1 or 4, characterized in that, the number of effective viable bacteria in the composite bacterial agent is 7.0-1.10 billion/g. 7. The pig manure biological treatment process according to claim 1, wherein the modifier is in parts by weight, comprising the following components: 24-37 parts of monopotassium phosphate, 2-methyl-2- 18-19 parts of acrylic acid, 5-8 parts of 2-chloro-6-trichloromethylpyridine, 1-4 parts of sodium nitrophenolate, 2-5 parts of cellulose hydroxyethyl ether. 8. The pig manure biological treatment process as claimed in claim 1 or 7, wherein the modifier is in parts by weight, comprising the following components: 28 parts of monopotassium phosphate, 2-methyl-2- 114 parts of acrylic acid, 6 parts of 2-chloro-6-trichloromethylpyridine, 3 parts of sodium nitrophenolate, and 3 parts of cellulose hydroxyethyl ether. 9. pig manure biological treatment process as claimed in claim 1 is characterized in that, described admixture is a unit by weight, comprises following components: 18-30 parts of urea, 38-62 parts of potassium chloride, deodorant 7-10 doses. 10. a pig manure utilization method as described in any one of claim 1-9, is characterized in that, the application of described pig manure in solid fertilizer, liquid fertilizer after processing.

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