KR20200067469A - System for processing pig excretions - Google Patents

Abstract

The present invention provides a system of treating pig excreta (100), which irradiates microwave to solids generated when pig excreta containing a large amount of moisture is separated into solid and liquid when the solids pass through each of a plurality of driers, so as to rapidly dry the same, and sprays liquids which are an organic matter generated with the solids to dried solids so as to simultaneously dry the liquids while passing through the driers. A solid drying unit (130) is formed by connecting a plurality of driers (130-1 to 130-N), and microwave is irradiated by differently adjusting the strength thereof when solids pass through each of the plurality of driers (130-1 to 130-N) so as to dry the solids. In addition, a control unit (170) sprays liquids from a liquid spray unit (140) to solids dried while passing the plurality of driers (130-1~130-N-1) at a front side of the plurality of driers (130-2 to 130-N) by differently adjusting an amount of the liquids according to a state of the dried solids, and controls the solids, to which the liquids are sprayed, to be dried while passing the driers.

Description

System for processing pig excretions

The present invention relates to a pig manure treatment system, and more specifically, to a pig manure treatment system that allows liquids generated during solid-liquid separation of pig manure containing a large amount of water to be recycled as fuel by simultaneously treating the solids. It is about.

Pig has higher fertilizer content and pollutant load in manure than other breeds. In particular, because piglets installed in pig farms have many types of slurry (manure mixture), it is difficult to properly treat pig manure.

1 is a block diagram showing a conventional system for processing pig manure.

As shown in FIG. 1, in the system 10, the pig manure is separated from the solid-liquid separation unit 11 by a solid-liquid separation unit 11, and the organic liquid material is separated and discharged in the liquid storage unit 12 while storing the liquid. (13) is processed through a separate process, and the solids containing water that is separated and discharged are molded in a state in which metal components are removed through the metal detection unit 14 and the solids forming unit 15 to form a solids drying unit 16 ).

In the solids drying unit 16, when the solids pass through the interior, the microwaves are heated and dried, and the water vapor generated in this process is discharged through the water vapor discharge unit 17, and the dried solids are the dry solids discharge unit It is discharged to (18) to prepare a process for production of fuel or the like.

Then, the control unit 19 controls the respective parts for the above-described processing.

However, in the conventional system 10 as described above, the liquid material that is separated and discharged from the pig manure by solid-liquid separation is additionally treated as a secondary liquid fertilization and purification method as an organic material, apart from the solid material that is dried by irradiating microwaves. There was a problem needed.

First, liquid-liquidation, the solid-liquid separation of the slurry to remove solids, and then aeration for about 2 months while supplying a minimum of 50ℓ/㎥ in air for at least 2 minutes to make a homogeneous liquid fertilizer without odor.

In addition, unlike the above system 10, after mixing a moisture control material such as sawdust with pig manure having a high moisture content without separating solids and then stabilizing by decomposing organic substances for about 2 months using a method such as forced ventilation and stirring. Composting is also used.

However, when composting pig manure, there is a problem of overnutrition of agricultural land. According to the OECD's statistics on nutrient balance of agricultural land by country, in the nitrogen category of fertilizer, Korean agricultural land had an excess of 248kg per gram and phosphorus content was 46.4kg, ranking first and second among 40 OECD countries. Since farmers are putting much more nutrients in the form of livestock compost or chemical fertilizers than the amount of crops needed, the over-sprayed nutrients accumulate between soil particles or sweep down into the river when it rains, enriching the stream, causing algal growth to pollute the environment. Is generating.

In addition, the purification treatment method is a mixture of physical (solid-liquid separation), chemical (chemical treatment), and biological (using aerobic microorganisms) methods to remove solids by removing solids, and at this time, the concentration of contaminants such as BOD is 100 ppm or less. In order to discharge it to rivers, etc., air is supplied at least 150ℓ/㎥ in 1 minute and aeration is performed for about 20 days.

However, even if the urine, which accounts for a large number of pig manure, does not contaminate the water quality and uses the purification treatment method to discharge it, there is a limit to meet the discharge standard.

On the other hand, the modern society, which uses fossil resources represented by coal and oil as its main energy sources, has abundantly enriched their lives, but the environmental pollution has also become serious. To prevent this, gradually replace the main energy sources with eco-friendly renewable energy. There is a need.

Among these eco-friendly renewable energy,'Biomass' is not only cheaper than LNG (liquefied natural gas), which is the cheapest among fossil fuels, but also can effectively treat waste, so it is highly likely that it will gradually become the main axis of renewable energy. You can.

However, the main material used in the conventional biomass is wood chips (waste wood), and it is found that the fine dust generated when burning it is a serious level, so it is good to recycle waste, but if environmental pollution occurs in this process, eventually use fossil fuels As it was no different, the idea of reducing the use of wood chips emerged, and the use of fuel for livestock manure emerged as an alternative. This is because the processing of animal manure, which itself is a hotbed of environmental pollution, is environmentally friendly, and, moreover, it is easier to supply and receive materials than wood chips.

The present invention is intended to solve the above problems, and when the solids generated during the separation of solids of pig manure containing a large amount of moisture passes through each of a plurality of dryers, it is irradiated with microwaves to dry quickly, and organic substances generated together with the solids The object of the present invention is to provide a system for treating pig manure in an environmentally friendly manner by spraying phosphorus liquids on dried solids and drying them simultaneously.

In order to solve the above problems, the present invention includes a solid-liquid separation unit 110 for separating the pig manure into a solid solution; A liquid storage unit 120 in which liquid liquid of pig manure generated by solid-liquid separation of the solid-liquid separation unit 110 is stored; Solids drying unit 130 for drying the solids of the pig manure generated by the solid-liquid separation of the solid-liquid separation unit 110; A liquid water sprinkling unit 140 receiving the liquid stored in the liquid storage unit 120 and spraying the solids dried in the solid drying unit; A water vapor discharge part 150 for discharging water vapor generated by drying the solid material of the solid material drying part 130; A dry solids discharge unit 160 for discharging the dried solids from the solids drying unit 130; And, the control unit 170 for controlling the respective parts; including, the solids drying unit 130, a plurality of dryers (130-1 ~ 130-N) is made of a connection, the plurality of dryers (130- 1 to 130-N) while passing through each of the microwaves, the solids are dried while irradiating with different intensity, and the controller 170 passes through the plurality of dryers 130-1 to 130-N-1. The dried solids are sprayed on the front side of the plurality of dryers 130-2 to 130-N by differently adjusting the amount of the liquids in the liquid water sprinkling unit 140 according to the dried solids. Provided is a pig manure treatment system (100) characterized in that it is controlled to dry the sprinkled solids while passing through the dryers.

Preferably, a liquid water electrolysis unit 121 is further provided between the liquid water storage unit 120 and the liquid water sprinkling unit 140, and the liquid water electrolysis unit 121 is the After receiving the liquid material from the liquid material storage unit 120, the content of moisture may be reduced by electrolysis to be supplied to the liquid water sprinkling unit 140.

According to the pig manure treatment system of the present invention having the above-described solution, the solids generated during the separation of the solid liquid of the pig manure containing a large amount of moisture are rapidly controlled while being controlled by differently controlling the intensity of microwaves when passing through each of the dryers. On the other hand, while drying, the organic liquid material, which is generated together with the solid material, is sprayed by adjusting the amount differently according to the state of the dried solid material and then drying while passing through the dryer. It can be recycled as fuel by drying quickly and optimally using a small amount of energy in a single system, thereby reducing treatment costs and significantly reducing environmental pollution.

Furthermore, after receiving the liquid from the liquid storage section, the water content is reduced by electrolysis in the liquid water electrolysis section, and then the concentrated liquid is supplied to the liquid water sprinkling section, thereby evaporating the water content of the liquid by conventional heating. It is possible to increase the efficiency more, and there is an effect that hydrogen and oxygen generated by electrolysis can be used as energy.

1 is a block diagram showing a conventional system for treating pig manure,
Figure 2 shows a pig manure treatment system according to an embodiment of the present invention,
3 is a cross-sectional view of a dryer forming a solids drying unit in the system of FIG. 2,
4 is a block diagram specifically showing the solids drying unit and the liquid water sprinkling unit in the system of FIG. 2,
5 is a view specifically showing the system of FIG. 2,
6A and 6B are views showing FIG. 5 in more detail.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail, which is intended to be described in detail so that those skilled in the art to which the present invention pertains can easily carry out. It does not mean that the technical spirit and scope of the invention are limited. And terms used to define relative positions such as before and after, left and right, up and down, and inside and outside are based on the attached drawings.

Figure 2 shows a pig manure treatment system according to an embodiment of the present invention, Figure 3 is a cross-sectional view of a dryer forming a solids drying unit in the system of Figure 2, Figure 4 in the system of Figure 2, the solids drying unit and the liquid It is a block diagram specifically showing the water sprinkler.

Pig manure treatment system 100 according to an embodiment of the present invention, as shown in Figures 2 to 4, the solid-liquid separation unit 110, the liquid storage unit 120, and solids drying unit 130 and , Including a liquid water sprinkler 140, a water vapor discharge unit 150, a dry solid discharge unit 160 and a control unit 170, between the solid-liquid separation unit 110 and the solid material drying unit 130 A liquid water electrolysis unit 121 may be further provided between the metal detection unit 111, the solid molding unit 112, and the liquid storage unit 120 and the liquid water sprinkling unit 140.

The solid-liquid separator 110 may be provided with a hopper in which pig manure with a high moisture content is input, and a screw connected to the hopper and installed in a horizontal state to separate pig manure into liquid and solid while dewatering the pig manure, In addition, it can be separated by various devices and methods.

The solid matter of the pig manure separated by the solid-liquid separation from the solid-liquid separation unit 110 is transferred to the next process by the screw to be dried.

Here, between the solid-liquid separation unit 110 and the solid material drying unit 130, a metal detection unit 111 that detects whether a solid contains foreign matter such as metal and a solid material that has passed through the metal detection unit 111 have a predetermined shape. It may be further provided with a solid material forming part 112 to make it easier to dry by molding to have.

The liquid material storage unit 120 stores the liquid material of pig manure generated by the solid-liquid separation of the solid-liquid separation unit 110.

The solids drying unit 130 dries the solids of pig manure generated by solid-liquid separation of the solid-liquid separation unit 110.

The solids drying unit 130 is formed by connecting a plurality of dryers 130-1 to 130-N. In the embodiment of the present invention, the first and second and third solids dryers 130- connected are installed. 1~130-3) to dry the solid by irradiating microwaves when passing through each.

Here, the intensity of microwaves to be irradiated can be adjusted differently to suit the state of solids for each dryer to maximize the drying efficiency, and the number of dryers can be increased or decreased.

In addition, a microwave shield is installed on one side of the first solids dryer 130-1 into which solid-liquid separated solids are added and on the other end of the third solids dryer 130-3 where the dried solids are finally discharged. , It can block the microwaves generated inside the dryer from escaping to the outside.

Each of the solids dryers 130-1 to 130-3 includes a magnetron 131, a waveguide 132, a drying chamber 133, and a solids transport unit 134, and the solids containing moisture are the It is dried while being transferred from one side to the other through the solids transfer unit 134.

The magnetron 131 generates microwaves having a predetermined frequency to irradiate microwaves into the waveguide 132 to dry solids. The magnetron 131 may be installed on the solids transport unit 134 at a predetermined interval.

The waveguide 132 is connected to the opened upper surface of the drying chamber 133, and guides microwaves generated by the magnetron 131 into the drying chamber 133.

The drying chamber 133 is a rectangular shape having an inlet and an outlet to which solid objects to be dried enter and exit and an open top surface, and the outer portion reflects and disperses microwaves derived from the magnetron 131 internally to the solid objects. It has a structure that absorbs microwaves uniformly and prevents leakage to the outside, and is made of a coated iron plate or a stainless steel plate, and the solid material transport unit 134 is installed in the longitudinal direction.

The solid material conveying unit 134 may be configured as a conveyor belt wound around and rotating on the front and rear rollers at the inlet and the outlet of the drying chamber 133, and the solid material is continuously dried while passing through a plurality of the magnetrons 131. Transfer.

In the above-described solid material dryers 130-1 to 130-3, microwaves penetrate into the solid material while irradiating by controlling the intensity of the microwaves differently while passing through the plurality of magnetrons 131, that is, water contained therein, that is, water The molecules are vibrated at high speed, and the heat generated by friction between the water molecules and the water molecules evaporates and dries the moisture. The solid material, which is dried in a short time, is dried with little difference between the inside and outside.

In an embodiment of the present invention, when the pig manure is treated for 15 tons based on the operation for 8 hours a day and the water content is 90%, the solids drying unit 130 is 600㎾ in total, and the liquid water electrolysis unit The direct evaporative heating of (121) was 120 kW, and the solid-liquid separation of the solid-liquid separator 110 was 22 kW, in addition to a maximum power consumption of 830 kW, including 20 kW of a blower and 68 kW of a motor.

The liquid water sprinkling unit 140 is supplied with the liquid stored in the liquid storage unit 120, and dried while passing through the dryers 130-1 and 130-2 of the solids drying unit 130. Sprinkle while adjusting the amount differently according to the state of solids.

In addition, a liquid water electrolysis unit 121 is further provided between the liquid storage unit 120 and the liquid water sprinkling unit 140.

Here, the liquid water electrolysis unit 121 receives the liquid water from the liquid storage unit 120, removes a considerable amount of water, and supplies it to the liquid water sprinkling unit 140 for electrolysis. Order.

Oxygen and hydrogen generated by the operation of the liquid water electrolysis unit 121 may be used in various forms of energy, for example, may be supplied to the liquid water electrolysis unit 121, collected separately It can be used in the form of energy.

From this, the liquid water sprinkling unit 140 removes a significant amount of the liquid water supplied from the liquid water storage unit 120 and is sprayed on the solids of the dryers 130-2 and 130-3 in a concentrated state. , It is possible to efficiently heat-dry by microwave.

In an embodiment of the present invention, a microwave dryer having high drying efficiency is continuously installed in multiple stages, and liquids are sprayed on the solids that have been dried at each stage to dry together with the solids, so that the solids quickly dry to a minimum moisture content. Secondary wastes, such as organic liquids that are being disposed of, are also optimally quickly and mass-processed together to be recycled as fuel.

The water vapor discharge part 150 may install a supply and exhaust line (fan) in the drying chamber 133 to quickly discharge water vapor generated from the solid material by drying the solid material in the solid material drying part 130. In addition, the generated water vapor is discharged through a plurality of pipes installed in the drying chamber 133.

In addition, the outlet pipe is made of iron and is provided with a network (not shown in the figure) in which a plurality of holes of about 2 to 3 mm are formed to shield microwaves.

The dry solids discharge unit 160 discharges the solids dried in the solids drying unit 130 so as to manufacture fuel and the like.

The control unit 170 controls pigs manure by controlling the respective parts through a PLC, a touch panel, etc. In the embodiment of the present invention, the solids dried in the solids drying unit 130 are electrolyzed to the liquid water. The liquid water from which a considerable amount of water is removed from the part 121 is sprinkled from the liquid water sprinkling unit 140, and the solid material sprayed with the reduced water is passed through the dryer of the solid material drying unit 130. And the solids are controlled to dry together.

Referring to the accompanying drawings, the operation of the pig manure treatment system according to an embodiment of the present invention having the above-described solution will be described as follows.

FIG. 5 is a diagram specifically showing the system of FIG. 2, and FIGS. 6A and 6B are diagrams illustrating FIG. 5 in more detail.

A system for treating pig manure according to an embodiment of the present invention is specifically shown in FIGS. 5 and 6A and 6B.

The control unit 170, after drying the solids in the solids drying unit 130, here to evenly sprinkle the reduced water in the liquid water sprinkling unit 140, and the solids drying unit 130 ) Control the drying of the liquid and solid at the same time, and the solid-liquid separation unit 110, the metal detection unit 111, the solid-molding unit 112, and the liquid-liquid storage unit ( 120), the liquid water moisture electrolysis unit 121, the water vapor discharge unit 150, and controls the dry solids discharge unit 160.

First, in the control unit 170, the pig manure inputted through the hopper is controlled to be separated from the solid-liquid separation unit 110.

The solids separated and discharged from the solid-liquid separation unit 110 may pass through the metal detection unit 111 and the solids forming unit 112 to detect whether foreign matters such as metal are contained in the solids and make drying more easily. It is molded to have an existing shape and transferred to the solids drying unit 130.

Next, in the control unit 170, the solids of the pig manure generated by the separation of solid-liquids are controlled to be heated and dried to irradiate microwaves from the solids drying unit 130 to minimize moisture content.

Here, the solids drying unit 130, to adjust the intensity of the microwaves differently to suit the state of the solids passing through each of the first to third solids dryers 130-1 to 130-3 where the solids are connected in multiple stages To dry quickly.

At the same time, the control unit 170, the liquid material of the pig manure generated in the solid-liquid separation step in the liquid-water sprinkling unit 140, the first and second solids dryer (130-1) (130-2) In the second and third solids dryers 130-2 and 130-3, while the amount is differently adjusted according to the state of the dried solids, the second and third solids dryers ( It is controlled to irradiate microwaves at 130-2) (130-3), dry them by heating, and then discharge them for further processing.

Here, in the liquid water sprinkling unit 140, the liquid water is reduced by electrolysis in the liquid water electrolysis unit 121, and sprayed on the dried solid material, so that the solid material drying unit 130 It allows heat drying by microwaves while conveying solids.

From this, the system 100 for treating pig manure according to an embodiment of the present invention includes solid, first, second, and third solid dryers 130-1 to 130- which form the solid drying unit 130. It is dried while passing through 3) sequentially, and the water is reduced in the liquid water sprinkling unit 140 in a state in which the drying degree is increased by passing through the first and second solid material dryers 130-1 and 130-2. Water is sprayed on the front sides of the second and third solids dryers 130-2 and 130-3, and at the same time, it is irradiated with microwaves and dried again, and then discharged, thereby minimizing the moisture content. In addition, it is possible to simultaneously treat the liquid material of the organic material being disposed of, so that it can be recycled as fuel and the like, thereby reducing work time and reducing operating costs. In addition, it is possible to set each condition differently in various drying steps, thereby further improving efficiency. And it is possible to minimize environmental pollution.

This invention is not limited to the above embodiments, and various modifications are possible within the scope of the invention described in the claims, and such modifications are also included within the scope of the invention.

10: Conventional pig manure treatment system
11, 110: solid-liquid separator
12, 120: liquid storage section
13: liquid water treatment unit
14, 111: metal detector
15, 112: solid material forming part
16: solids drying section
17: water vapor discharge unit
18, 160: Dry solid discharge part
19: control unit
100: pig manure treatment system according to an embodiment of the present invention
121: liquid water moisture electrolysis unit
130: solids drying unit
130-1, 130-2, 130-3: 1st to 3rd solids dryer
131: magnetron
132: waveguide
133: drying chamber
134: solid material transfer unit
140: liquid water sprinkler
150: water vapor discharge unit
170: control unit

Claims (2)

A solid-liquid separator 110 that separates the pig manure into a solid solution;
A liquid storage unit 120 in which liquid liquid of pig manure generated by solid-liquid separation of the solid-liquid separation unit 110 is stored;
A solids drying unit 130 for drying solids of pig manure generated by solid-liquid separation of the solid-liquid separation unit 110;
A liquid water sprinkling unit 140 receiving the liquid stored in the liquid storage unit 120 and spraying the solids dried in the solid drying unit;
A water vapor discharge part 150 for discharging water vapor generated by drying the solid material of the solid material drying part 130;
A dry solids discharge unit 160 for discharging the dried solids from the solids drying unit 130; And,
Includes; control unit 170 for controlling each of the parts,
The solids drying unit 130 is made of a plurality of dryers 130-1 to 130-N connected, and when passing through each of the plurality of dryers 130-1 to 130-N, the intensity of microwaves is different. Dry the solids while adjusting and irradiating,
The control unit 170, the amount of the liquid in the liquid water sprinkling unit 140 to the dried solid while passing through the plurality of dryers (130-1 ~ 130-N-1) according to the state of the dried solid Pig manure treatment system (100) characterized in that it is controlled to be differently sprayed on the front side of the plurality of dryers (130-2 to 130-N), and the solids sprayed with the liquid are dried while passing through the dryers. According to claim 1,
A liquid water electrolysis unit 121 is further provided between the liquid storage unit 120 and the liquid water sprinkling unit 140,
The liquid water electrolysis unit 121 receives the liquid material from the liquid material storage unit 120, reduces the content of water by electrolysis, and supplies the liquid water to the water spraying unit 140. Pig manure treatment system characterized in (100).

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