System and process for removing sand from feces

Abstract

The excrement sand removal system comprises a pulp homogenizing tank, a feeding tank is arranged on one side of the pulp homogenizing tank, a hair removal box is further arranged on one side of the pulp homogenizing tank, a hair removal machine is arranged in the hair removal box, and a backflow pipe connected with the pulp homogenizing tank is installed at the bottom of the hair removal box; a sand removing machine is arranged on one side of the sand and stone separating hopper, the discharging end of the sand removing machine extends out of the sand and stone separating hopper, a manure and sand separating machine is further installed on the sand and stone separating hopper, a connecting pipe at the inlet end of the manure and sand separating machine extends into the slurry homogenizing pool, and the heavy discharging end of the manure and sand separating machine is located on the sand and stone separating hopper. The light discharging end of the excrement and sand separator extends into the feeding pool, and a water inlet pipe is further arranged on the sand and sand separating hopper. The invention further discloses a sand removal process for the feces. The system can reduce the water consumption of the livestock farm during excrement treatment, is high in treatment efficiency, good in treatment effect of sand, gravel, hair and the like, is smooth in operation, achieves resource utilization of livestock farm excrement, reasonably utilizes water sources, and reduces water source waste.

Description

Technical Field

[0001] The present invention relates to the technical field of manure treatment in breeding farms, and in particular to a manure sand removal system and process. Background Art

[0002] With the improvement of the processing level of farms, the resource utilization of manure in the breeding process has become the norm. After the manure collected from breeding is fermented, it can be used as organic fertilizer to turn waste into treasure for enterprises, reducing processing costs and increasing profits. And the fermented manure is a high-quality organic fertilizer. It contains rich nutrients such as nitrogen, phosphorus, potassium, etc. These elements are essential for plant growth. By rationally applying manure, soil fertility can be improved, soil structure can be improved, and crop growth and development can be promoted.

[0003] Due to the high sediment content in feces, it is easy to cause a large amount of sedimentation at the bottom of the biogas digester, thereby reducing the capacity of the biogas digester and reducing the treatment efficiency. Therefore, before entering the biogas digester for treatment, sand removal treatment is carried out. However, traditional sand removal treatment consumes a lot of water, resulting in a high water content in the treated feces, which not only produces a large amount of biogas liquid, but also further reduces the feces treatment efficiency. For this reason, we proposed a feces sand removal system and process to solve the above problems. Summary of the invention

[0004] The present application provides a manure and sewage sand removal system and process, which solves the problem of large water consumption in manure and sewage treatment in farms.

[0005] The present application provides a manure and sewage sand removal system, comprising a homogenizing tank, a feed tank is arranged on one side of the homogenizing tank, a hair removal box is arranged on one side of the homogenizing tank, a hair removal machine is arranged in the hair removal box, and a return pipe connected to the homogenizing tank is installed at the bottom of the hair removal box; It also includes a sand and gravel separation bucket, a sand remover is provided on one side of the sand and gravel separation bucket, the discharge end of the sand remover extends to the outside of the sand and gravel separation bucket, a feces and sand separator is also installed on the sand and gravel separation bucket, the inlet end connecting pipe of the feces and sand separator extends into the homogenization tank, the heavy discharge end of the feces and sand separator is located on the sand and gravel separation bucket, the light discharge end of the feces and sand separator extends into the feed tank, and the sand and gravel separation bucket is also provided with a water inlet pipe; It also includes a fermentation tank, the feed tank is connected to the fermentation tank, and a corresponding discharge tank is provided on one side of the fermentation tank; It also includes a first biogas slurry pool, into which the supernatant of the fermentation pool flows, and the biogas slurry in the first biogas slurry pool is sent to the homogenization pool; It also includes a mud-water separation device, wherein a second biogas slurry tank is installed at the liquid discharge end of the mud-water separation device, a liquid fertilizer production workshop is installed at the second biogas slurry tank, and a solid fertilizer production workshop is arranged at the solid discharge end of the mud-water separation device.

[0006] Preferably, the sand and gravel separation bucket is conical, and the sand remover is installed along the inclined edge of the sand and gravel separation bucket.

[0007] Preferably, the sand remover is a screw conveyor.

[0008] Preferably, the inlet connecting pipe extends to the bottom of the homogenization tank.

[0009] Preferably, a feed buffer tank is further provided between the feed tank and the fermentation tank.

[0010] Preferably, the manure-sand separator is a cyclone sand remover.

[0011] A process for removing sand from manure and sewage, comprising the following steps: S1, adding feces and water into a homogenizing tank for homogenization and hair removal; S2, pump the fecal water at the bottom of the homogenization tank to the fecal sand separator, send the light fecal water to the fermentation tank for fermentation treatment, and separate the heavy fecal water from the sand; S3, after the light fermentation is completed, the upper clear liquid is sent to the homogenization tank, and the rest is sent to the mud-water separation device for mud-water separation. The solid is sent to the solid fertilizer production workshop to produce solid organic fertilizer, and the liquid is sent to the liquid fertilizer production workshop.

[0012] The hair removal process comprises the following steps: The upper layer of liquid in the homogenizing tank flows into the dehairing box by overflow; The hair removal machine keeps rotating, taking the animal hair in the hair removal box and discharging it outside the box; The liquid at the bottom of the dehairing box is pumped into the homogenizing tank, realizing the process of continuous movement of the liquid on the upper layer of the homogenizing tank into the dehairing box.

[0013] The sand-water separation comprises the following steps: The heavy materials are sent to the sand and gravel separation bucket, except that the sand machine lifts the sand at the bottom of the sand and gravel separation bucket to the sand and gravel separation bucket; The liquid in the sand and gravel separation bucket flows into the homogenization tank by overflow.

[0014] Preferably, the manure is chicken manure.

[0015] It can be seen from the above technical scheme that the present application provides a manure and sewage sand removal system and process. When the present application is in use, the manure and wastewater from the breeding process are discharged into the homogenization tank, and then biogas slurry water is added in proportion. When the biogas slurry water is insufficient, other water can be added. The water-manure mixture in the homogenization tank is mixed and stirred in the homogenization tank, and then extracted from the bottom into the manure and sand separator. The sand and gravel at the bottom of the manure and sand separator are discharged into the sand and gravel separation bucket. The sand and gravel are washed with water in the sand and gravel separation bucket to remove the manure, and then discharged through the desander, piled up, and the cleaning water is sent to the homogenization tank. The slurry pool is used as mixing water. During the homogenization process, the lighter animal hair floats on the upper layer and flows to the dehairing box through overflow for dehairing. The light manure water discharged by the manure sand separator is sent to the feed pool. After the stock reaches the set value, it is uniformly fermented. Specifically, it can be used for biogas fermentation. During the fermentation process, the upper clear liquid is sent to the first biogas pool and used as homogenization in the homogenization pool. The fermented feces is separated into solid and liquid, and the liquid is made into liquid organic fertilizer, and the solid is used as solid organic fertilizer.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the setting of the homogenization tank, feces and water can be mixed to improve the separation efficiency and facilitate subsequent separation processing; 2. By setting up a hair removal box, the hair floating on the surface can be removed by taking advantage of its light weight, which is convenient for subsequent processing and improves the quality of organic fertilizer; 3. Through the setting of feces sand separator, sand and gravel separation bucket and sand remover, the sand and gravel in feces can be separated twice. The feces after the initial separation are fermented, and the water after washing is used as homogenizing water, so as to reasonably utilize water resources and reduce water waste; 4. Through the fermentation tank, liquid fertilizer production workshop and solid fertilizer production workshop, the feces is fermented, separated and processed to prepare solid and liquid organic fertilizers.

[0017] In summary, this application can reduce the amount of water used in farms when treating feces, has high treatment efficiency, good treatment effects on sand, gravel, hair, etc., and the system runs smoothly, achieving resource utilization of farm feces. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation cases. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a manure and sewage sand removal system proposed by the present invention; In the figure: 1 homogenization tank, 2 feeding tank, 3 dehairing box, 4 dehairing machine, 5 return pipe, 6 desander, 7 sand and gravel separation bucket, 8 water inlet pipe, 9 feces and sand separator, 10 first biogas slurry tank, 11 feeding buffer tank, 12 fermentation tank, 13 discharge tank, 14 liquid fertilizer production workshop, 15 second biogas slurry tank, 16 solid fertilizer production workshop, 17 mud and water separation device. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0021] See also Figure 1 , a manure and sewage sand removal system, the present application is used for the treatment of farm manure, especially the treatment of chicken manure. In the chicken breeding process, the manure has a high sand and gravel content, so it needs to be pre-treated to remove the sand and gravel before fermentation treatment. During the treatment process, one ton of chicken manure requires three tons of water to be treated in order to effectively treat the sand and gravel in the chicken manure. With the increase in the scale of breeding, the treatment volume of chicken manure removal gradually increases, and the water consumption of the original treatment mode is large. For this reason, we proposed this application, specifically, including a homogenizing tank 1, a feeding tank 2 is arranged on one side of the homogenizing tank 1, it should be understood that the homogenizing tank 1 and the feeding tank 2 are both provided with a stirring structure, and the tanks need to be stirred when the homogenizing and feeding tanks 2 are loaded, and one side of the homogenizing tank 1 is also A dehairing box 3 is provided, and the dehairing box 3 and the homogenizing tank 1 are installed horizontally. The water in the homogenizing tank 1 flows into the dehairing box 3 by overflow. The chicken manure contains a large amount of chicken hair, so the chicken manure needs to be dehaired. When the chicken manure enters the homogenizing tank 1 and is in the homogenization process, the hair is lighter and floats up and flows into the dehairing box 3. A dehairing machine 4 is provided in the dehairing box 3. In the present application, the dehairing machine 4 is a chain plate conveyor. The chain plate of the dehairing machine 4 takes the chicken hair out of the dehairing box 3 and removes it. In order to make the water flow in the homogenizing tank 1 continuously enter the dehairing box 3, a reflux pipe 5 connected to the homogenizing tank 1 is installed at the bottom of the dehairing box 3. The water at the bottom of the dehairing box 3 is continuously pumped into the homogenizing tank 1 through the reflux pipe 5, so that the water in the dehairing box 3 is lower than the water level in the homogenizing tank 1; The sand and gravel separation bucket 7 is also included, and the sand and gravel separation bucket 7 is used to clean and separate the separated sand and gravel again. Specifically, a sand remover 6 is arranged on one side of the sand and gravel separation bucket 7. The sand and gravel separation bucket 7 is conical, and the sand remover 6 is installed along the inclined edge of the sand and gravel separation bucket 7. In the present application, the sand remover 6 is a screw conveyor, and the sand remover 6 is located at the bottom of the sand and gravel separation bucket 7. The sand and gravel settle during the cleaning process, and the discharge end of the sand remover 6 extends to the sand and gravel separation bucket 7. The sand and gravel are brought out of the sand and gravel separation bucket 7 by the sand remover 6 and discharged. A manure sand separator 9 is also installed on the sand and gravel separation bucket 7. The manure sand separator 9 is a cyclone sand remover. The chicken manure homogenized in the homogenization tank 1 is completed in the manure sand separator 9. The first sand and gravel separation, specifically, utilizes the granular characteristics of sand and gravel to remove the sand and gravel in the chicken manure, the inlet connecting pipe of the manure and sand separator 9 extends into the homogenization tank 1, and the inlet connecting pipe extends to the bottom of the homogenization tank 1, and the chicken manure at the bottom of the homogenization tank 1 is extracted for treatment, which can avoid sedimentation in the homogenization tank 1, and the heavy discharge end of the manure and sand separator 9 is located on the sand and gravel separation bucket 7. The chicken manure completes the first sand and gravel separation in the manure and sand separator 9, and the separated sand and gravel enter the sand and gravel separation bucket 7 for the second cleaning and separation. The light discharge end of the manure and sand separator 9 extends into the feed tank 2, waiting for fermentation treatment. In this application, the capacity of the homogenization tank 1 and the feed tank 2 is 300m³. After the sand and gravel of the present application are washed twice, they can be directly processed without pollution. Due to the continuous water loss in the system, a water inlet pipe 8 is also provided on the sand and gravel separation bucket 7. The water of the present application is added through the water inlet pipe 8, and the purpose of washing the sand and gravel is achieved at the same time, so that the washing efficiency of the sand and gravel is higher. In the present application, the water consumption of one ton of chicken manure is less than one ton, and the specific consumption is affected by the season and the dryness and wetness of the chicken manure. The water in the water inlet pipe 8 includes aquaculture wastewater, rainwater and self-use water, which greatly reduces the amount of washing water; It also includes a fermentation tank 12, and the feed tank 2 is connected to the fermentation tank 12. In the present application, the fermentation tank 12 is a biogas fermentation tank, and black film fermentation can be used specifically. The fermentation tank 12 and the fermentation technology refer to the prior art. The chicken manure fermented in the fermentation tank 12 is discharged and waits for treatment. Specifically, a corresponding discharge tank 13 is provided on one side of the fermentation tank 12. After the chicken manure is fermented, it is buffered by the discharge tank 13 and then treated; The system further comprises a first biogas slurry tank 10, which is used to collect the clear liquid in the fermentation tank 12. Specifically, the upper clear liquid of the fermentation tank 12 flows into the first biogas slurry tank 10, and the water in the fermentation tank 12 is used as chicken manure mixed water, which can not only improve the fermentation efficiency, but also reduce the water consumption of the system, and further reduce the liquid content in the solid-liquid separation of chicken manure after fermentation. When the chicken manure is added to the homogenization tank 1, the biogas slurry in the first biogas slurry tank 10 is sent to the homogenization tank 1; It also includes a mud-water separation device 17, a second biogas slurry tank 15 is installed at the liquid discharge end of the mud-water separation device 17, a liquid fertilizer production workshop 14 is installed at the second biogas slurry tank 15, and is used to produce liquid fertilizer from the separated liquid, and a solid fertilizer production workshop 16 is set at the solid discharge end of the mud-water separation device 17, and the separated solid is used as solid fertilizer.

[0022] In the present application, a feed buffer tank 11 is further provided between the feed tank 2 and the fermentation tank 12. Before fermentation, feces are first delivered to the feed buffer tank 11 according to a fixed quantity, and then the feces are delivered to each fermentation tank 12 for fermentation through the feed buffer tank 11.

[0023] A process for removing sand from manure and sewage, comprising the following steps: S1, adding feces and water into a homogenizing tank 1 for homogenization and hair removal, wherein the feces and water are chicken feces, and during the homogenization process, when the water content of the feces is 75%, the ratio of feces to water is 1:1, wherein the water is the sum of the water volume of the first biogas slurry tank 10 and the sand and gravel separation bucket 7, and the feces need to be made into a slurry during the homogenization process; S2, after the homogenization is completed, the fecal water at the bottom of the homogenization tank 1 is pumped to the fecal sand separator 9, and the granular sand and gravel are separated from the fecal slurry by the fecal sand separator 9. Since the present application requires secondary cleaning of the separated sand and gravel, more than 95% of the sand and gravel are removed during sand removal, wherein the light ones are sent to the fermentation tank 12 for fermentation treatment, and the heavy ones are separated from the sand and water, and the sand and gravel are separated again. At this time, the fecal content in the sediment is low, and the water consumption is small. The sand and gravel are separated and discharged, and the cleaning water is used as homogenization water; S3, after the light fermentation is completed, the upper clear liquid is sent to the homogenization tank 1 for uniform use, and the rest is sent to the mud-water separation device 17 for mud-water separation. The solid is sent to the solid fertilizer production workshop 16 to produce solid organic fertilizer, and the liquid is sent to the liquid fertilizer production workshop 14. The fermented chicken manure is used as a fertilizer resource.

[0024] The hair removal process includes the following steps: The upper layer of liquid in the homogenizing tank 1 flows into the dehairing box 3 by overflow, and the dehairing work can be carried out during the process of adding chicken manure and stirring the chicken manure; During hair removal, the hair removal machine 4 rotates continuously, and the animal hair in the hair removal box 3 is taken out of the hair removal box 3, and the removed hair is dried and then harmlessly treated; The liquid at the bottom of the hair removal box 3 is pumped into the homogenization pool 1. Since the hair is light, it is extracted from the bottom to avoid drawing the hair into the homogenization pool 1 and to achieve the process of continuous movement of the upper liquid in the homogenization pool 1 into the hair removal box 3.

[0025] Sand and water separation includes the following steps: The heavy materials are sent to the sand and gravel separation bucket 7, and the sand and gravel separation bucket 7 is connected to an external water source. In addition to the sand machine 6 lifting the sand at the bottom of the sand and gravel separation bucket 7 to the sand and gravel separation bucket 7, it is dried; The liquid in the sand and gravel separation bucket 7 flows into the homogenization tank 1 by overflow. An overflow pipe is set at a set height to discharge the water into the homogenization tank 1 to complete the secondary treatment of the sand and gravel. The secondary treatment of the sand and gravel can not only reduce the use of water, but also improve the cleaning process of the sand and gravel, which is convenient for later processing.

[0026] It can be seen from the above technical scheme that when the present application is used, the feces and wastewater from the breeding process are discharged to the homogenizing tank 1, and biogas slurry water is added according to the proportion. When the biogas slurry water is insufficient, other water can be added. The water-feces mixture in the homogenizing tank 1 is mixed and stirred in the homogenizing tank 1, and then extracted from the bottom to the feces sand separator 9. The sand and gravel at the bottom of the feces sand separator 9 are discharged to the sand and gravel separation bucket 7. The sand and gravel are washed with water in the sand and gravel separation bucket 7 to remove the feces, and then discharged through the sand remover 6, piled up and placed, and the washing water is sent to the homogenizing tank 1 as mixed water. In the homogenization process, the lighter animal hair floats on the upper layer, and the hair flows into the dehairing box 3 through overflow for dehairing. The light manure water discharged by the manure sand separator 9 is sent to the feed tank 2. After the stock reaches the set value, it is uniformly fermented, and can be specifically used as biogas fermentation. During the fermentation process, the upper clear liquid is sent to the first biogas tank 10 and used as homogenization in the homogenization tank 1. The fermented feces is separated into solid and liquid, wherein the liquid is made into liquid organic fertilizer, and the solid is used as solid organic fertilizer.

[0027] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope of the present application is indicated by the claims.

[0028] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present application do not constitute a limitation on the scope of protection of the present application.

Claims

1. A manure and sewage sand removal system, comprising a homogenization tank (1), characterized in that: A feed tank (2) is provided on one side of the homogenizing tank (1), a hair removal box (3) is also provided on one side of the homogenizing tank (1), a hair removal machine (4) is provided in the hair removal box (3), and a return pipe (5) connected to the homogenizing tank (1) is installed at the bottom of the hair removal box (3); It also comprises a sand and gravel separation bucket (7), a sand remover (6) is arranged on one side of the sand and gravel separation bucket (7), the discharge end of the sand remover (6) extends to the sand and gravel separation bucket (7), a feces and sand separator (9) is also installed on the sand and gravel separation bucket (7), the inlet end connecting pipe of the feces and sand separator (9) extends into the homogenization tank (1), the heavy discharge end of the feces and sand separator (9) is located on the sand and gravel separation bucket (7), and the light discharge end of the feces and sand separator (9) extends into the feed tank (2), and a water inlet pipe (8) is also arranged on the sand and gravel separation bucket (7); It also includes a fermentation tank (12), the feed tank (2) is connected to the fermentation tank (12), and a corresponding discharge tank (13) is provided on one side of the fermentation tank (12); It also comprises a first biogas slurry pool (10), the supernatant of the fermentation pool (12) flows into the first biogas slurry pool (10), and the biogas slurry in the first biogas slurry pool (10) is sent to the homogenization pool (1); It also comprises a mud-water separation device (17), wherein a second biogas slurry tank (15) is installed at the liquid discharge end of the mud-water separation device (17), a liquid fertilizer production workshop (14) is installed at the second biogas slurry tank (15), and a solid fertilizer production workshop (16) is provided at the solid discharge end of the mud-water separation device (17).

2. A manure and sewage sand removal system according to claim 1, characterized in that: The sand and gravel separation bucket (7) is conical, and the sand remover (6) is installed along the inclined edge of the sand and gravel separation bucket (7).

3. The manure and sewage sand removal system according to claim 1, characterized in that: The sand remover (6) is a screw conveyor.

4. A manure and sewage sand removal system according to claim 1, characterized in that: The inlet connecting pipe extends to the bottom of the homogenization tank (1).

5. The manure and sewage sand removal system according to claim 1, characterized in that: A feed buffer tank (11) is also provided between the feed tank (2) and the fermentation tank (12).

6. The manure and sewage sand removal system according to claim 1, characterized in that: The manure sand separator (9) is a cyclone sand remover.

7. A process for removing sand from manure and sewage, characterized in that: The following steps are involved: S1, adding feces and water into a homogenizing tank (1) for homogenization and hair removal; S2, pumping the fecal water at the bottom of the homogenization tank (1) to the fecal sand separator (9), sending the light fecal matter to the fermentation tank (12) for fermentation treatment, and separating the heavy fecal matter from the sand; S3, after the light fermentation is completed, the upper clear liquid is sent to the homogenization tank (1), and the rest is sent to the mud-water separation device (17) for mud-water separation. The solid is sent to the solid fertilizer production workshop (16) to produce solid organic fertilizer, and the liquid is sent to the liquid fertilizer production workshop (14).

8. The process for removing sand from manure and sewage according to claim 7, characterized in that: The hair removal process comprises the following steps: The upper layer of liquid in the homogenizing tank (1) flows into the dehairing box (3) by overflow; The hair removal machine (4) rotates continuously to carry the animal hair in the hair removal box (3) to the outside of the hair removal box (3) for discharge; The liquid at the bottom of the dehairing box (3) is pumped into the homogenizing tank (1), thereby achieving a process in which the liquid in the upper layer of the homogenizing tank (1) continuously moves into the dehairing box (3).

9. The process for removing sand from manure and sewage according to claim 7, characterized in that: The sand-water separation comprises the following steps: The heavy materials are sent to the sand and gravel separation bucket (7), and the sand machine (6) lifts the sand at the bottom of the sand and gravel separation bucket (7) into the sand and gravel separation bucket (7); The liquid in the sand and gravel separation bucket (7) flows into the homogenization tank (1) by overflow.

10. The process for removing sand from manure and sewage according to claim 7, characterized in that: The manure is chicken manure.

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