KR20210056215A - A Sludge Digestion System Using Mixed Microorganism and Microbubble - Google Patents

Abstract

The present invention relates to a sludge digestion system in which sludge fermentation and decomposition can be performed using a complex fermentation microorganism and complex microbubbles. The present invention includes: a sludge digestion tank accommodating sludge-contained water and having a gas outlet on an upper side; a microorganism supply pipe connected to one side of the sludge digestion tank and supplying a complex fermentation microorganism liquid preparation containing aerobic and anaerobic microorganisms into the sludge digestion tank; an aerator provided in the sludge digestion tank and ejecting complex microbubbles containing microbubbles and normal bubbles into the sludge digestion tank; and a supernatant discharge pipe connected to the other side of the sludge digestion tank and discharging a supernatant generated as a result of decomposition of the sludge to the outside. With the sludge digestion system using the complex fermentation microorganism and complex microbubbles, the efficiency of sludge decomposition can be enhanced and system simplification can be achieved.

Description

A Sludge Digestion System Using Mixed Microorganism and Microbubble}

The present invention relates to a sludge digestion system, and more particularly, to a sludge digestion system using a complex fermentation microorganism and a complex microfluidic cloth capable of fermenting and decomposing sludge using a complex fermentation microorganism and a complex microporous cloth.

In general, the sludge remaining after wastewater treatment is decomposed and fermented through the sludge digestion process.

Sludge digestion refers to the process of decomposing organic matter in the sludge in order to facilitate the final disposal of the sludge. This sludge digestion process is divided into aerobic digestion and anaerobic digestion.

Aerobic digestion is the decomposition and digestion of sludge using aerobic microorganisms, that is, microorganisms that grow and proliferate in an environment with a lot of air or oxygen, and anaerobic digestion is the growth of anaerobic microorganisms, that is, microorganisms, and no air or oxygen is required, and oxygen. The sludge is decomposed and digested by using microorganisms that die when exposed to a lot of environments.

In aerobic digestion and anaerobic digestion, as described above, due to the characteristics of aerobic microorganisms and anaerobic microorganisms that prefer different environments, the decomposition process proceeds in different digesters, and a diffuser for agitation of sludge is provided in each digester. It has been provided in the form of a tube for supplying microorganisms to one side of the digester. However, an aerobic digestion tank and an anaerobic digestion tank are provided, respectively, to install a sludge digestion system, a wide facility space is required, and the system is also complicated.

In addition, in the case of anaerobic digestion, there is a problem in that there is almost no air or gas in the anaerobic digester, so that organic matter in the sludge decays and an odor occurs, and due to the characteristics of anaerobic microorganisms, there is a problem that the decomposition rate is slow and the decomposition efficiency is low.

Accordingly, there is a need to develop a sludge digestion system that is simple and can increase decomposition efficiency while occupying a small facility space.

1. Korean Patent Registration No. 10-1980012 ("Sludge digestion tank and its operation method") 2. Korean Registered Patent No. 10-1590014 ("Anaerobic digester with prevention function of reducing efficiency by sludge") 3. Korean Patent Registration No. 10-1305458 ("Sludge solubilization method for increasing digestion efficiency of anaerobic digester")

The present invention has been conceived to solve the above problems, and an object of the present invention is to provide a sludge digestion system using complex fermented microorganisms and complex microporous bags capable of increasing the decomposition efficiency of sludge while minimizing equipment space and simplifying the system. It is in the offering.

Meanwhile, the object of the present invention is not limited to the above-mentioned object, and other objects not mentioned will be clearly understood from the following description.

The sludge digestion system using the complex fermented microorganism and the complex microporous according to the present invention comprises: a sludge digestion tank that receives water containing sludge and has a gas discharge port on the upper side; A microbial supply pipe connected to one side of the sludge digestion tank to supply a liquid complex fermentation microorganism containing aerobic microorganisms and anaerobic microorganisms into the sludge digestion tank; An aeration device provided inside the sludge digestion tank and ejecting complex microbubbles including microbubbles and ordinary bubbles into the sludge digestion tank; And a supernatant water discharge pipe connected to the other side of the sludge digestion tank to discharge supernatant water generated by decomposing the sludge to the outside.

At this time, the aeration device is provided with a compressed air ejection pipe through which compressed air is ejected into the sludge digestion tank, the outlet pressure is 6 Bar or more, and the sludge digestion system is an impact plate provided in front of the compressed air ejection pipe. Including, the compressed air hitting the impact plate becomes the composite microbubble consisting of at least one of microbubbles, microbubbles, micro-nano bubbles, and nanobubbles and ordinary bubbles, and the pressure of compressed air and compressed air The shock wave generated when striking the impact plate exerts ultrasonic and Leonard effects to break the carbon base sequence of the sludge to decompose the sludge into organic matter and inorganic matter, and at least one of the microbubbles, microbubbles, and micro-nano bubbles. At least one is attached to the organic material, it is characterized in that the organic material is floated to the surface to create a good environment for aerobic microorganisms to live.

And the impact plate is characterized in that the curved shape.

In addition, a plurality of the aeration devices are installed inside one sludge digestion tank, and each of the impact plates is provided for each aeration device, and at least one of the impact plates is curved to one side, and among the impact plates At least one of the other is characterized in that the curve is formed to the other side.

In addition, the aeration device includes a housing having an opening at one end and a polygonal shape inside to provide a microbubble generating chamber, and compressed air introduced from the outside through the opened end of the housing. Compressed air ejection pipe for ejecting, and formed on one side of the compressed air ejection pipe, including a microbubble generating port for part of the compressed air passing through the compressed air ejection pipe to be ejected into the microbubble generation chamber, the fine It is characterized in that the compressed air ejected through the bubble generation port hits the inner wall of the microbubble generation chamber to generate microbubbles.

In addition, the sludge digestion tank is characterized in that a sludge circulation pipe is provided that connects a lower end and an upper portion of the sludge digestion tank and circulates the sludge stacked under the sludge digestion tank upward to prevent the sludge from sticking.

In addition, the complex fermentation microorganism liquid preparation includes at least one of aerobic fermentation microorganisms Nocardioides, Acinetobacter, Bacillus, and anaerobic fermentation microorganism Clostridium, It is characterized in that it contains at least one of Enterobacter, Lactobacillus, and Citrobacter.

Finally, the sludge digestion system includes a controller that causes the microorganism supply pipe to supply a liquid compound fermentation microorganism to the sludge digestion tank, wherein the controller includes, when controlling the microorganism supply pipe, the complex accommodated in the sludge digestion tank. The amount of the fermentation microorganism liquid preparation is controlled to be 0.003 to 0.01 times the weight of the sludge contained in the sludge digestion tank, and the amount of water contained in the sludge digestion tank is 1 to 3 times the weight of the sludge.

The sludge digestion system using the complex fermenting microorganism and the complex microporous according to the present invention having the above configuration has the effect of simplifying the system by using the complex fermenting microorganism liquid formulation.

In addition, there is an effect of increasing the sludge decomposition efficiency of microorganisms and removing odors through compressed air and microbubbles ejected from the configuration of the aeration device.

In addition, ultrasonic and Leonard effects can be exhibited through the configuration of the impact plate.

In addition, there is an effect of dividing the areas of anaerobic microorganisms and aerobic microorganisms and securing the composition area of supernatant water by limiting the circulation range of sludge and water through the aeration device through the configuration of the partition plate.

In addition, when there are a plurality of aeration devices, the bending directions of the impact plates corresponding to each are formed differently, so that the convection effect in the sludge digestion tank can be maximized.

1 is a conceptual diagram of a sludge digestion system using a complex fermented microorganism and a complex microporous cloth according to a first embodiment of the present invention.
2 is a schematic cross-sectional view of an aeration device of a sludge digestion system using a complex fermentation microorganism and a complex microporous according to a first embodiment of the present invention.
3 is a cross-sectional conceptual view showing another form of aeration apparatus of the sludge digestion system using the complex fermented microorganism and the complex microporous according to the first embodiment of the present invention.
4 is a conceptual diagram of a sludge digestion system using a complex fermentation microorganism and a complex microporous cloth according to a second embodiment of the present invention.
5 is a conceptual diagram of a sludge digestion system using a complex fermenting microorganism and a complex microporous cloth according to a third preferred embodiment of the present invention.

Before describing the technical idea of the present invention in more detail using the accompanying drawings, terms or words used in the present specification and claims should not be construed as being limited to a conventional or dictionary meaning, and the inventor himself Based on the principle that the concept of terms can be appropriately defined in order to describe the invention of the invention in the best way, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention.

Accordingly, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical spirit of the present invention. It should be understood that there may be variations.

Hereinafter, the technical idea of the present invention will be described in more detail using the accompanying drawings. The accompanying drawings are only an example illustrated to describe the technical idea of the present invention in more detail, so the technical idea of the present invention is not limited to the form of the accompanying drawings.

The sludge digestion system using the complex fermented microorganism and the complex microporous according to a preferred embodiment of the present invention relates to a sludge digestion system capable of increasing the decomposition efficiency of sludge, and largely, a sludge digestion tank, a microorganism supply pipe, a supernatant water discharge pipe, and a width It includes a device, an impact plate, a partition plate, and a controller. The sludge extinguishing system using the complex fermenting microorganism and the complex microporous according to the preferred embodiment of the present invention can be divided into three embodiments according to the location of the divider and aerators and the number of aerators. Hereinafter, each embodiment will be divided and described in detail.

[First Embodiment]

1 is a conceptual diagram of a sludge digestion system using a complex fermentation microorganism and a complex microporous cloth according to a first embodiment of the present invention.

The sludge digestion tank 100 is configured to receive water containing the sludge 10 and provide a space where the sludge is decomposed and digested. The sludge digester 100 has a hollow shape, and a gas outlet 110 for discharging gases such as carbon dioxide and nitrogen generated when the sludge 10 is decomposed to the outside is formed at the top.

In addition, the sludge extinguishing tank 100 connects the bottom and the top of the sludge extinguishing tank 100, and a pump is connected, so that the sludge 10 accumulated at the bottom of the sludge extinguishing tank 100 is sucked and circulated back to the top of the sludge extinguishing tank. 120 may be included. When the sludge circulation pipe 120 is included, the sludge deposited in the lower part of the sludge digestion tank 100 is not fixed, so that microorganisms can maintain a constant rate of decomposition of the sludge. In addition, if the shape of the lower end of the sludge digestion tank 100 is formed to be inclined downward toward the portion to which the sludge circulation pipe 120 is connected, the sludge circulation pipe 120 has the effect of allowing the sludge 10 to be more easily collected. You can look forward to it.

The microorganism supply pipe 200 is connected to one side of the top of the sludge digestion tank 100, and serves to supply a liquid aerobic microorganism and a complex fermentation microorganism liquid material including anaerobic microorganisms into the sludge digestion tank 100 under the control of the controller (C). Do it. At this time, the microbial liquid material is at least one of aerobic fermentation microorganisms Nocardioides, Acinetobacter, and Bacillus, and anaerobic fermentation microorganisms Clostridium, Enterobacter ( Enterobacter), lactic acid bacillus (Lactobacillus), Citrobacter (Citrobacter) at least any one of the included, and preferably a breathable fermentation microorganism Klebsiella (Klebsiella) may also be included. Most preferably, it is preferable that it is a CES-1 mixed microorganism deposited as KCTC 12579BP with the Korea Research Institute of Bioscience and Biotechnology.

The aeration device 300 is provided inside the sludge digestion tank 100 and serves to eject complex microbubbles including the fine bubbles 302 and the normal bubbles 301 into the sludge digestion tank. In order to describe the detailed form of the aeration device 300, reference will be made to FIG. 2 together with FIG. 1 for a moment.

2 is a schematic cross-sectional view of an aeration device of a sludge digestion system using a complex fermenting microorganism and a complex microporous cloth according to a first embodiment of the present invention.

The aeration device 300 has an opening at the top, and the inside of the housing 310 is provided with a microbubble generating chamber 311 formed in a polygonal shape, and one end passes through the microbubble generating chamber 311 inside the housing 310. Formed on one side of the inner section of the compressed air ejection pipe 320 for ejecting compressed air supplied from the outside through the opened upper end of the housing 310 and the microbubble generation chamber 311 of the compressed air ejection pipe 320 It includes a microbubble generating port 330. The compressed air ejected through one end of the compressed air ejection pipe 320 is ejected through a nozzle at a pressure of 6 Bar or more. In addition, the compressed air 301 ejected through the microbubble generation port 330 hits the polygonal wall surface of the microbubble generation chamber 311, and its diameter is crushed to a size of 100 μm to 1000 μm, thereby forming the microbubbles 302. And is ejected through the opened upper end of the housing 310.

Here, the bubbles generated in the microbubble generation chamber 311 are not necessarily only microbubbles. In some cases, ordinary bubbles, micro bubbles, micro bubbles, micro nano bubbles, and nano bubbles may also be generated in combination according to the diameter and ejection pressure of the nozzle and the collision expansion coefficient of the impact plate.

To briefly explain the characteristics of each bubble, first, the normal bubble rises rapidly above the water surface and ruptures, and has a high diffusivity and agitation function. Microbubbles rise relatively slowly above the surface of the water and rupture, and are fragile and diffuse. Microbubbles are formed with a diameter of 10 μm to 100 μm, and the surface rising speed and diffusion are slow, but they are reduced and dissipated or dissolved in water due to ultrasonic waves and Leonard effects from shock waves, and function for sterilization and cleaning (free radicals). And increases the amount of dissolved oxygen. Among these, micro-bubbles are nano-bubbled by the self-pressing effect of air bubbles, and burst at instantaneous high pressure, resulting in the effects of decomposing, sterilizing, and cleaning organic matter, and can be diffused in a wide range by ordinary bubbles to exert their functions.

3 is a cross-sectional conceptual view showing another form of aeration apparatus of the sludge digestion system using the complex fermented microorganism and the complex microporous according to the first embodiment of the present invention.

In some cases, as shown in FIG. 3 in order to increase the effect of generating the micro-bubbles 302, the surface of the micro-bubble-generating chamber 311 facing the micro-bubble generating hole 330 has a long rod shape, An auxiliary device 340 having one end rotatably fixed to a surface facing the microbubble generating port 330 and to which a plurality of impellers 341 are fixed along the longitudinal direction may be further provided.

On the other hand, the impact plate 400 is spaced a predetermined distance from the opened upper end of the housing 310 and the position thereof is fixed. Accordingly, the high-pressure compressed air ejected from the compressed air ejection pipe 320 collides with the impact plate 400, and the shock wave generated at this time exerts ultrasonic and Leonard effects, resulting in sludge as shown in FIG. By breaking the carbon base sequence of the organic material 11 and the inorganic material 12 constituting (10), the organic material 11 and the inorganic material 12 are separated. In addition, when the normal air bubbles ejected through the compressed air ejection pipe collide with the impact plate, they are finely broken and transformed into a complex micro-bubble consisting of the normal bubbles 301, micro-bubbles, and micro-bubbles and micro-nano-bubbles, thereby playing the role of each bubble. Can be done.

The organic material 11 is relatively light and floats upward when the microbubbles 302 ejected from the aeration device 300 are attached to the outer surface thereof. The microbubbles 302 may burst in instantaneous high heat together with shock waves in water and water, thereby breaking the carbon base sequence contained in organic matter, and breaking the base sequence of aldehyde groups such as ammonia and hydrogen sulfide that cause odor, thereby removing the fundamental ring of odor. have. In addition, the heat generated by the bursting of the microbubbles 302 also exerts an effect of disinfecting the organic material 11. Micro-bubbles are not necessarily attached to the outer surface of the organic material, and micro-bubbles or micro-nano-bubbles may also be attached. In addition, heat or oxygen generated by microbubbles also exerts the effect of activating the activity and growth of complex fermented microorganisms.

The compressed air 301 and microbubbles 302 supplied from the aeration device 300 float upward, and the aerobic fermentation microorganism of the liquid compound fermentation microorganism supplied from the microorganism supply pipe 200 prefers an environment rich in oxygen. Due to its characteristics, it is concentrated and distributed in the upper part of the sludge digestion tank 100. In addition, the aerobic fermentation microorganisms eat and decompose the organic matter 11, and the microbubbles 302 continuously float the organic matter 11 and supply it to the upper side. It occurs actively, and since the organic material 11 can be decomposed more intensively, the decomposition efficiency of the organic material 11 is increased.

On the other hand, the inorganic material 12 is relatively heavy so that even if the microbubbles 302 are attached to the outer surface thereof, they cannot float to the surface and fall to the bottom of the sludge digestion tank 100. Since there is not much oxygen in the lower part of the sludge digestion tank 100, anaerobic fermentation microorganisms are concentrated and distributed, and since the anaerobic fermentation microorganism eats and decomposes the inorganic material 12, the dropped inorganic matter 12 is decomposed by the anaerobic microorganisms. Like aerobic fermentation microorganisms, anaerobic microorganisms also automatically create a living environment, which increases the efficiency of decomposition of inorganic matter.

The central part of the sludge digestion tank 100 is actively stirred by the compressed air 301 ejected from the compressed air ejection pipe 320, and the sludge 10, organic matter 11, and inorganic matter 12 are mixed. In addition, the amount of oxygen is not large or small compared to the upper and lower portions of the sludge digestion tank 100, and breathable fermentation microorganisms are distributed in this area to decompose the sludge 10, organic matter 11, and inorganic matter 12. Let it.

For reference, when the sludge 10 stagnates and oxygen is not supplied, the organic matter 11 contained therein is decayed to generate an odor, so the inside of the sludge digestion tank 100 needs to be actively stirred. Therefore, the micro-bubbles and ordinary bubbles 301 ejected through the compressed air ejection pipe have a role of a circulator and a supply of oxygen in addition to the role of generating a shock wave, and the impact plate 400 is as shown in Figs. Likewise, it may be formed to be curved to one side or the other side so that the flow of the micro-bubbles hitting the impact plate 400 and the normal bubbles 301 may occur more actively.

Referring to FIG. 1 again, the controller C serves to control the microorganism supply pipe 200 to supply the liquid compound fermentation microorganism into the sludge digestion tank 100 as described above. The controller C controls the amount of 0.003 to 0.01 times the weight of the sludge 10 accommodated in the sludge digestion tank 100 to be accommodated in the sludge digestion tank when controlling the microorganism supply pipe. In addition, the controller (C) controls the amount of water accommodated in the sludge digester 100 to be accommodated in an amount that is 1 to 3 times the weight of the sludge accommodated in the sludge digester 100. For reference, a water supply pipe (not shown) and a sludge supply pipe (not shown) may be separately provided in the sludge digestion tank 100 or may be supplied through the microorganism supply pipe 200.

The sludge 10 accommodated in the sludge digestion tank 100 is decomposed by the microbial liquid formulation as described above to generate supernatant water.

The supernatant water discharge pipe 500 serves to pass through the other side of the sludge digester 100 and transfer the supernatant water generated in the sludge digester 100 to the outside. At this time, information on the weight of the supernatant water transferred to the outside of the sludge digestion tank 100 through the supernatant water discharge pipe 500 may be transferred to the controller C and used when controlling the microorganism supply pipe 200.

The partition plate 600 in the first embodiment is formed in an annular shape along the inner wall surface of the sludge digestion tank 100 on the inner upper side of the sludge digestion tank 100. For reference, the water surface of the water accommodated in the sludge digestion tank 100 is located at a position spaced apart from the partition plate 600 by a predetermined height. At this time, the aeration device 300 and the impact plate 400 are installed under the divider plate 600, and one end of the supernatant water discharge pipe 500 is the upper part of the divider plate 600, more precisely, the divider plate 600 and It is placed between the points where the water surface is located.

In the case of having the arrangement structure as described above, the stirring action by the micro-bubbles of the aeration device 300 and the normal air bubbles 301 is limited by the divider plate 600 and occurs only at the divider plate 600 side. It prevents the anaerobic fermentation microorganisms from flowing into the upper side of the divider plate 600. This allows organic matter and aerobic fermentation microorganisms to be concentrated and distributed on the upper side of the divider plate 600 to maintain decomposition efficiency at a certain level or higher. In addition, the one end of the supernatant water discharge pipe 500 is located at a position where there are not many organic substances 11 and there is little flow, thereby exerting an effect of securing a section in which supernatant water can be sucked.

[Second Example]

The sludge digestion system using the complex fermented microorganism and the complex microporous according to the second preferred embodiment of the present invention has the same configuration and shape as in the first embodiment described above, but the shape and formation position of the divider plate, the aeration device and the , The formation position of the supernatant water discharge pipe is different, and hereinafter, only the configuration different from the above-described embodiment will be described.

4 is a conceptual diagram of a sludge digestion system using a complex fermenting microorganism and a complex microporous cloth according to a second embodiment of the present invention.

The partition plate 600 in the second embodiment is provided with a predetermined width at a position spaced apart from the inner bottom surface of the sludge digestion tank 100 by a predetermined distance. As shown in Fig. 4, the divider plate 600 may further have a support leg below the divider plate 600 to fix the position, and extend a predetermined length downward along the outer periphery of the divider plate 600. , It may be formed to further limit the flow flow from the lower side of the partition plate 600.

In the second embodiment, the aeration device 300 is installed on the upper surface of the divider plate 600, and one end of the supernatant water discharge pipe 500 is installed so as to be located near the lower surface of the divider plate 600. Inhalation of supernatant water can be made.

In the case of having the arrangement structure as described above, the agitation action of the aeration device 300 occurs only on the upper side of the divider plate, and accordingly, the complex fine fabric including the ordinary bubbles and the fine bubbles ejected from the aeration device 300 is a sludge digester. (100) The partition plate 600 flows only into the upper area, so that the upper area of the divider plate 600 creates a good environment for aerobic fermentation microorganisms to live, and the lower area of the divider plate 600 does not allow oxygen to enter the anaerobic fermentation microorganisms. This has the effect of creating a good environment for living. In addition, the inorganic material 12 decomposed from the sludge 10 by the aeration device 300 is naturally dropped to the lower side of the partition plate 600 by weight, but the dropped inorganic material is not resupplied to the upper side of the aeration device 300. It has the effect of preventing it.

[Third Example]

The sludge digestion system using the complex fermentation microorganism and the complex microporous according to the third preferred embodiment of the present invention is a case in which a plurality of aerators and shock plates are provided inside the sludge digestion tank. At this time, the impact plate is provided with a respective impact plate for each aeration device.

5 is a conceptual diagram of a sludge digestion system using a complex fermented microorganism and a complex microporous according to a third preferred embodiment of the present invention.

As shown in Figure 5, the sludge digestion system using the complex fermentation microorganism and the complex microporous according to the third embodiment, at least one of the plurality of impact plates 400 is formed curved to one side, at least one of the other It is formed curved to the side.

More precisely, when the plurality of aeration devices 300 are arranged in a row, the aeration device 300 having the impact plate 400 curved to one side may have an impact plate 400 curved to the other side between each other. At least one aeration device 300 is provided. Through this, the stirring action in the sludge digestion tank 100 can occur more effectively.

Alternatively, although not shown, when the arrangement of the plurality of aerators 300 is arranged in a concentric circle shape, the aerators 300 arranged inside have an impact plate 400 curved to one side, and are arranged inside the aeration device 300 The aerators 300 and the aerators disposed adjacent to each other in the outer direction may have the impact plate 400 curved to the other side.

In addition, if the distance between the upper surface of the aerator 300 and the lower surface of the impact plate 400 is varied, the stirring action may be made more smoothly.

The technical idea should not be interpreted as limited to the above-described embodiment of the present invention. As well as a variety of application ranges, various modifications may be made at the level of those skilled in the art without departing from the gist of the present invention claimed in the claims. Therefore, these improvements and changes will fall within the scope of protection of the present invention as long as it is apparent to those skilled in the art.

10: sludge
11: organic matter 12: inorganic matter
100: sludge digestion tank
110: gas outlet 120: sludge circulation pipe
200: microbial supply pipe
300: aeration
301: normal bubbles 302: fine bubbles
310: housing 311: microbubble generation chamber
320: compressed air outlet pipe 330: microbubble generation port
340: auxiliary device 341: impeller
400: shock plate
500: supernatant water discharge pipe
600: divider
C: controller

Claims (8)

A sludge digestion tank containing water containing sludge and having a gas outlet formed on the upper side;
A microbial supply pipe connected to one side of the sludge digestion tank to supply a liquid complex fermentation microorganism containing aerobic microorganisms and anaerobic microorganisms into the sludge digestion tank;
An aeration device provided inside the sludge digestion tank and ejecting complex microbubbles including microbubbles and ordinary bubbles into the sludge digestion tank; And
A supernatant water discharge pipe connected to the other side of the sludge digestion tank to discharge supernatant water generated by decomposing the sludge to the outside.
The method of claim 1,
The aeration device,
A compressed air ejection pipe through which compressed air is ejected into the sludge digestion tank is provided, and the outlet pressure is 6 Bar or more,
The sludge digestion system,
Including an impact plate provided in front of the compressed air ejection pipe; the compressed air hitting the impact plate is composed of at least one of microbubbles, microbubbles, micronano bubbles, and nanobubbles, and the composite microbubbles Air bubbles,
The pressure of the compressed air and the shock wave generated when the compressed air strikes the impact plate exerts ultrasonic and Leonard effects, breaking the carbon base sequence of the sludge to decompose the sludge into organic and inorganic substances,
At least one of the micro-bubbles, micro-bubbles, and micro-nano-bubbles is attached to the organic material to float the organic material to the surface of the water, thereby creating a good environment for aerobic microorganisms to live. Sludge digestion system using air bubbles.
The method of claim 2,
The impact plate,
A sludge digestion system using a complex fermenting microorganism and a complex microporous cloth, characterized in that the curved shape is formed.
The method of claim 3,
The aeration device,
A plurality of sludge digestion tanks are installed inside, and each of the impact plates is provided for each aeration device,
At least one of the impact plates is curved toward one side, and at least one of the impact plates is curved toward the other side.
The method of claim 2,
The aeration device,
One end is opened, the inside is formed in a polygonal shape, a housing provided with a microbubble generating chamber,
A compressed air ejection pipe provided inside the housing and ejecting compressed air introduced from the outside through an open end of the housing;
It is formed on one side of the compressed air ejection pipe, including a microbubble generating port to allow part of the compressed air passing through the compressed air ejection pipe to be ejected into the microbubble generating chamber,
A sludge digestion system using complex fermentation microorganisms and complex microbubbles, characterized in that the compressed air ejected through the microbubble generation port hits the inner wall of the microbubble generation chamber to generate microbubbles.
The method of claim 2,
The sludge digestion tank,
A sludge extinguishing system using a complex fermentation microorganism and a complex microporous cloth, characterized in that a sludge circulation pipe is provided that connects the bottom and the top of the sludge digestion tank and circulates the sludge stacked on the bottom of the sludge digestion tank to the top so that the sludge does not stick. .
The method of claim 2,
The complex fermented microorganism liquid preparation,
At least one of aerobic fermentation microorganisms Nocardioides, Acinetobacter, and Bacillus, and anaerobic fermentation microorganisms Clostridium, Enterobacter, and Lactobacillus ), Citrobacter (Citrobacter), characterized in that it comprises at least any one of the sludge digestion system using a complex fermentation microorganism and a complex microporous cloth.
The method of claim 2,
The sludge digestion system,
Including; a controller for supplying the complex fermentation microorganism liquid material to the sludge digestion tank by the microorganism supply pipe,
The controller,
When controlling the microbial supply pipe, the amount of the complex fermented microorganism liquid formulation accommodated in the sludge digestion tank is controlled to be 0.003 to 0.01 times the weight of the sludge contained in the sludge digestion tank,
The amount of water accommodated in the sludge digester is 1 to 3 times the weight of the sludge.

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