KR19980047419A - High concentration organic waste treatment method and long-term retention type multi-stage continuous anaerobic digestion treatment device - Google Patents

Abstract

A method of multistage continuous anaerobic digestion of organic waste and apparatus used in the method are described. The process of the present invention comprises the steps of a) hydrolyzing high concentration organic waste and forming an organic acid and carbon dioxide, b) reducing decomposition reaction step of producing methane gas and supplying alkali using organic acid and hydrolyzate, c A) mixing step of contacting microorganisms and organics using sludge flow generated inside the tank by the storage and discharge of gas, d) supplying the water required for the decomposition and flow of the solids by returning the supernatant liquid, and supplying stabilized alkaline water. Removing odor components, e) odor removal by adsorption of media and deodorization using biological deodorization, oxidation of hydrogen sulfide components in methane gas by dry method, and f) storage of decomposed final residues. It consists of a storage step. According to the present invention, the cleaning of the device for maintenance and management is about once every 2 to 3 years, the residual sludge is about 5 to 7% of the input, the amount of gas generated is about 0.3 m ³ Gas / VS kg / d, and the treatment water is generated. There is no.

Description

High concentration organic waste treatment method and long-term retention type multi-stage continuous anaerobic digestion treatment device

The present invention treats high concentrations of organic wastes, including kitchen wastes and manure, directly at the source, prevents various environmental problems caused by them, and treats high concentrations of organic wastes for recycling methane gas, which is generated as a by-product, as an auxiliary heat source. The present invention relates to a continuous multi-stage continuous wastewater generation controlled anaerobic digestion apparatus.

Regarding the disposal of municipal waste, landfill disposal has reached the limit of our national land conditions. Especially, perishable waste (mainly kitchen waste) is a technical problem caused by decay after landfill. The demand for them is increasing. In this connection, various treatment devices (composting, fermentation feed) for the treatment of kitchen wastes have emerged, but there are still many problems in the maintenance, management and final disposal of processed materials.

In foreign countries, the final treatment of perishable waste is mainly applied by incineration and landfill technology, and there are not many applications of anaerobic digestion technology, and most of the existing extinguishing technologies require mechanical mixing and operating conditions of medium temperature (35 ℃). In addition, the properties of the inputs are applied at a concentration of about 5%, and a considerable level of technology is required for maintenance and management such as pretreatment, and the economic efficiency of operation is lightly evaluated.

Related Research For look, apply to the generation of a large grocery store waste 100 ton / d of Italy results through mesophilic digestion at 2000 m ³ reactor, the gas of waste per ton of approximately 58.5 m ³ gas is generated and the sludge 24 tons, It is reported that 38 tons of waste water is generated, which can reduce about 38%, which is an economic advantage over incineration. In another case, the waste treatment by the biphasic extinguishing method is more useful when the carbon / nitrogen ratio of the waste is less than 10, and the single phase is more advantageous when the waste is 15 or more. Non-warming operation has been reported to be competitive in a variety of ways. Mata-Alvarez J., Cecchi F., Llabres P. Pavan P., Anaerobic digestion of the Barocelona central food market organic wastes. Plant design and feasibility, Bioresource Tech., Vol. 42, p 33-42, 1992: Weiland P., One-and two step anaerobic digestion of solid ago industrial residues, Water Sci. Tech., Vol. 27, p 145-151, 1993: Lusk, Philip D., Comparative economic analysis. Anaerobic digestion case study, Bioresource Tech., Vol. 36, p223-228, 1991: Nazir M., Biogas plants construction technology for rural areas, Bioresource Tech. Vol. 35, p 283-289, 1991].

However, most of these existing anaerobic digestion systems are characteristic systems for each country's climate and other conditions, which are difficult to reflect in our reality. Also, the high concentration of the generated wastes has a solid content of about 20%. Application to the disposal of kitchen wastes will lead to the consideration of dilution water and further treatment of effluents.

In the situation where the treatment of kitchen waste is one of the most important environmental problems, the development of new technology that is out of the existing treatment technology is urgently needed, but the composting method that has rapidly emerged as the processing and recycling technology of organic waste is the characteristics of our diet. As it turned out to be inappropriate, the proposal of a new alternative was inevitable.

An object of the present invention is to integrate or independently anaerobic digestion treatment of manure and kitchen waste for solving the environmental pollution facing in areas where the installation of flush toilets is difficult in relation to the distribution of sewage facilities.

Another object of the present invention is to control the generation of treated water due to waste treatment in order to solve the problem of impairment of the economic activity due to the environmental burden of the industry that discharges high concentration organic waste such as food processing plant, causing maintenance and management problems To provide a functional and economical processing method and apparatus that do not.

1 is a cross-sectional process diagram of a multi-stage continuous anaerobic digestion apparatus of high concentration organic waste according to the present invention.

Figure 2 is a plan view of a multi-stage continuous anaerobic digestion apparatus of high concentration organic waste according to the present invention.

Figure 3 is a side process diagram of a multi-stage continuous anaerobic digestion apparatus of high concentration organic waste according to the present invention.

Figure 4 is a structural diagram of the deodorizing device according to the present invention and odor feed pipe distribution structure.

5 is a structural diagram of a desulfurization apparatus and an air floating conveying apparatus according to the present invention.

Figure 6 is a mixed process of kitchen waste and manure by the multi-stage continuous anaerobic digestion apparatus of high concentration organic waste according to the present invention.

Explanation of symbols for the main parts of the drawings

1.Inlet

2. Oxidative decomposition reaction tank

3. Reduction digestion tank

4. Stabilizer

5. Storage tank

6. Internal gas reservoir

7. Oxidation and Reduction Membrane

8. Internal gas reservoir

9. Flow rate control plate

10. Removable gas reservoir

11.T-type reduction reaction membrane

12. Inclined Plate

13. Random Microbial Culture Tank

14. Water level control tube

15. Gas discharge line

17. Odor gas suction line

18. Return blowers

19. Return pipe

20. Hot water supply pipe

21. Boiler

22. Odor Suction Line

24. Sludge and moisture trap

25. Gas automatic shut off valve

26. Desulfurization System

27. Gas Compression Pumps and Flowmeters

28. Gas Storage Tank

30. Sludge shear irregularities

31. Return Spray

32. Supernatant suction pipe for boiler

35. Deodorization Facility

36. Blower for transporting odor

40. Filtration layer

41, 50. Transfer pipe

42. Support layer

44. Desulfurization Fills

45. Return air supply line

47. Inclined Conduit

48. Sawdust deodorization layer

49. Soil Deodorization Layer

51. Deodorant layer

52. Filtration layer

53. Final outlet

54. Outlet

55. Sewage outlet

56. Return pipe

The object of the present invention as above,

a) an oxidative decomposition step of hydrolyzing high concentrations of organic waste and forming organic acids and carbon dioxide,

b) a reduction decomposition reaction for producing methane gas and supplying alkali using an organic acid and a hydrolyzate,

c) a mixing step of contacting the microorganisms with the organics using the sludge flow generated inside the tank by the storage and discharge of the gas,

d) supplying the water required for the decomposition and flow of the solids by returning the supernatant and supplying stabilized alkaline water to remove odor components;

e) oxidation of the hydrogen sulphide component contained in methane gas by odor removal using adsorption of media and biological deodorization after collection of malodorous substances;

f) storage step of storing decomposition final residues

It is achieved by the method of the present invention consisting of.

The organic waste treatment method, such as kitchen waste and manure of the present invention is the organic matter inlet (1), oxidative decomposition reaction tank (2), reduction decomposition reaction tank (3), stabilization tank (4), storage tank constituting the main body of the fire extinguishing device A continuous three-stage anaerobic digestion system (5) connected continuously and including an internal gas storage tank (6), a phase separation membrane (7, 9, 11), a movable internal gas storage plate (10), and a gas discharge pipe (15). It is composed of a fire extinguishing device body, a conveying blower 18, an air supply pipe 45, a conveying pipe 19, and a conveying water spray 31, and a desulfurization device for preventing the corrosion of a conveying device for conveying a supernatant liquid and a gas storage facility. A gas storage and utilization facility consisting of a gas automatic shut-off valve 25 including a device 26, a gas compression pump 27 and a gas storage tank 28 and a burner 29, a deodorizer 35 for deodorization, and Organic according to the invention, characterized in that it consists of a combination of boiler installations 21 It can be carried out by a continuous multi-stage wastewater generation controlled anaerobic digestion treatment of waste.

The inventors have determined that the development of an efficient treatment technology based on anaerobic digestion as the most realistic alternative to waste disposal will play a large role in solving environmental problems due to kitchen waste.

As a result of repeated studies in order to respond to such situation awareness, the present inventors have treated about 30% of the total amount of waste generated from kitchen waste at the source to improve problems related to landfills that have reached almost limit, and organic waste. The present invention has been completed by developing a convenient and economical treatment method and apparatus capable of effectively treating the gas, controlling the generation of effluents, and having almost no technical requirements for maintenance and management.

The reaction of each step of the present invention is designed to be carried out continuously in one reactor, the essential structure of these reaction step is shown in detail in FIG.

Hereinafter, a method and a treatment apparatus for a high concentration organic waste according to the present invention will be described in more detail with reference to FIGS. 1 to 6. The waste treatment apparatus of the present invention as shown in the accompanying drawings is only one example of an apparatus capable of carrying out the waste treatment method according to the principles of the present invention, and the form or structure thereof may be used to carry out the method of the present invention. Various modifications are possible. It should be noted that such modifications are within the scope of the present invention and the accompanying drawings are intended to more easily explain the present invention and are not intended to limit the present invention in any way.

Long-term stay multi-stage continuous waste treatment apparatus of the present invention is largely composed of a main body, a conveying device, a deodorizing facility (35), a gas storage and utilization facility, a boiler facility. The main body is a waste inlet (1), oxidative decomposition reaction tank (2), reduction and decomposition reaction tank (3), stabilizer (4), storage tank (5), gas storage tank (6), phase separation membrane (7, 9, 11), removable An internal gas reservoir plate 10 and a gas discharge pipe 15 are included. The anaerobic digestion apparatus separates the digestion reaction step into an oxidative decomposition step and a reductive decomposition step, but the reactants are continuously subjected to the oxidizing tank (2), the reducing reaction tank (3), and the stabilizing tank (4) by gravity. ), The installation position of the phase separation membrane and the inclination of the bottom for the movement of the solids in order to control the retention time of the microorganisms in the reaction tank according to the concentration characteristics of the solids in the input.

In the main body, the oxidation decomposition reaction tank (2) and the reduction decomposition reaction tank (3) are in contact with the redox separation membrane (7) as a boundary, and the bottom of the oxidation decomposition reaction tank (2) and the reduction decomposition reaction tank (3) is an oxidation decomposition reaction tank ( An inclined surface 12 is formed to facilitate the movement of the waste treated in 2). The storage tank 5 is located in the lower part of the inclined surface of the oxidation decomposition reaction tank 2 and the reduction decomposition reaction tank 3. The T-type reduction reaction separation membrane 11 is positioned between the reduction decomposition reaction tank 3 and the stabilization tank 4. In addition, the reduction reaction separation tank 3 has a gas storage tank 6, an internal gas storage plate 8, and a flow rate control plate 9, and has a structure in which a gas discharge pipe 15 is provided thereon. . The movable gas storage plate 10 is attached to the T-type reduction reaction separator 11. The installation position of the phase separation membranes 7, 9 and 10 and the inclination angle of the inclined surface are set according to the concentration characteristics of the solids in the input in consideration of the microbial retention time in the reaction tank. In consideration of this, it is appropriate that the inclination angle is changed by about 5 to 17 degrees.

The odor gas suction pipe 17 is connected to the inlet 1, and the upper part of the oxidative decomposition reaction tank 2 is connected to the air floating return pipe 19 for supplying the stabilized supernatant of the storage tank 5. The spray 31 is provided. In the oxidative decomposition reaction tank 2, a lattice arbitrary microorganism culture tank 13 and a water level control tube 14 for promoting the oxidative decomposition reaction can be disposed. A gas discharge pipe 15 is connected to the upper portion of the reduction decomposition reaction tank 3, and the generated gas is subjected to a desulfurization treatment through the discharge pipe. The boiler facility is necessary to keep the temperature of the storage tank 5 constant at around 20 ° C.

Organic waste generated in the kitchen, etc. is injected into the inlet (1) at a high concentration of the source state and flows into the oxidative decomposition reaction tank (2). Part of the input is hydrolyzed by the extracellular cell secretion of the microorganism, and part is subjected to an acidification reaction step in which the volatile organic acid is oxidized to components such as hydrogen and aldehyde. At this time, the stabilized supernatant of the storage tank 5 is conveyed through the air floating conveying pipe 19 to prevent odors that may occur during oxidation of the input and to supply adequate moisture required to secure liquidity of the liquid. The spray 31 is uniformly distributed to the oxidative decomposition reaction tank 2. The residence time of the treated object in the oxidative decomposition reaction tank (2) of the injected waste is determined by the separation interval of the membrane and the inclination of the bottom depending on the type and concentration of the waste and whether or not gas is used.

In addition, in the present invention, in order to promote the oxidation reaction, a lattice-shaped random microorganism culture tank 13 is installed in the oxidative decomposition reaction tank 2 to accumulate and supply a special random microbial group produced in pellet form at a high concentration. The waste which has undergone the oxidative decomposition reaction is first decomposed into volatile organic acids, aldehydes, and the like, and moves to the reduction decomposition reaction tank 3 along the slope 12 by gravity. In the reduction reaction tank 3, methane, carbon dioxide, and ammonia are formed and gasified by the action of methanation microorganisms, and gas pressure is generated in the internal gas storage tank 8. The movable gas storage plate 10 installed in the T-type reduction reaction membrane 11 rises due to the buoyancy force of the stored gas, floating sludge at the bottom of the inclined surface, and the internal pressure of the gas storage tank 6 is 0.1 to 0.15 kg / cm ² . When reaching, the gas is discharged by the operation of the gas pressure automatic control valve 25 connected to the gas discharge pipe 15 so that the movable gas reservoir 10 is lowered with the water level. The mixing process for the contact of the sludge and the microorganism is automatically performed by the water level change action and the rising and falling action of the movable gas storage plate 10 due to the storage and discharge action of the generated gas. The bicarbonate component produced in the reduction and decomposition process keeps the pH of the reduction reaction tank 3 constant and prevents the degradation of the biological activity due to excessive accumulation of organic acid in the oxidation reaction tank 2. Do this. The solids passed through the reduction reaction tank (3) gradually move and undergo final stabilization while passing through the stabilization tank (4), so that about 5 to 7% (0.8 to 1.2% of manure) of the total input amount remains in the storage tank (5). They are removed by a septic tank cleaning method through the internal gas check opening 6 about once every two to three years (manure is four to five years).

Through this oxidation and reduction reaction, organic matter is decomposed into a gaseous state and only residual sludge remains through solid-liquid separation. The theoretical relationship between these processes is shown in Scheme 1 below.

C _7.1 H _12.1 O _3.8 N _0.5 (kitchen waste) + 3.3H ₂ O-→ 3.55 CO ₂ +3.55 CH ₄ +0.5 NH ₃

That is, about 5.8 liters of water are required for 100 kg of food waste (20% solids content) to be anaerobicly decomposed. The generated gas was expected to be about 16.5 m ³ (1.03 m ³ Gas / kg VS / d), but as a result of the experiment, about 0.77 m ³ Gas / kg VS / d occurred in the medium temperature, about the case of the reactor operated in an unheated state 0.3 m ³ Gas / kg VS / d was generated. Meanwhile, the average amount of water contained in kitchen waste is about 81%, of which 5.5% is used for gasification of organic matter, about 4.5% is volatilized with gas to water vapor, and about 71% is removed by evaporation during residence time. do.

The residue, which has undergone the reduction reaction, is transferred to the stabilization tank 4, where it is changed to a stable state in which non-degradable sludge remains, with further decomposition. In addition, the stabilization tank (4) also includes a margin that can adjust the water level change due to the gas generation of the reduction reaction also serves as a regulator.

The residue is transferred to the storage tank 5 and accumulated until the cleaning time. The storage tank is equipped with an automatic temperature regulating boiler 21 for the damage of the device caused by the winter's East Sea and the improvement of the treatment efficiency. The temperature can be maintained around 20 ° C.

The gas generated in the treatment unit is desulfurized and stored in a gas storage facility and used as needed. As shown in FIG. 2, the gas is discharged by the automatic gas shut-off valve 25 via the discharge pipe 15 and transferred to the desulfurization device 26, at a pressure of about 10 kg / cm ² by the gas compression pump 27. It is stored in the gas tank 28 and used for necessary purposes. The dry average content of sulfur in kitchen wastes is about 0.54%, which is corrosive when gas is used and desulfurization facilities are required. FIG. 5 shows the structure of the desulfurization apparatus, which can be suitably applied to various kinds of desulfurization apparatus in the present invention, but in the present invention, a closed type desorption desulfurization tank of the dry method is used. As the desulfurization filler 44, an oxidizing agent of iron oxide (Fe ₂ O ₃ ) is added to replace and remove the sulfur component in the gas with iron sulfide. The relationship is shown in the following scheme 2.

Fe ₂ O ₃ 3H ₂ O + 3H ₂ S --- → 2FeS + 6H ₂ O

The iron sulfide used can be regenerated in the form of iron oxide if it is brought into contact with some air while being heated, so that it can usually be used for 2 to 5 times.

The malodorous components due to the decay of the waste during the treatment are forcibly sucked by the blower 36 through the suction port 17 and the storage tank 5 of the oxidation reaction tank 2, and the main building 33 through the odor feed pipe 22. ) Is introduced into the deodorizing device (35).

The odor main pipe 33 is introduced into the deodorizer 35 in a state in which the diameter of the odor is rapidly expanded to about three times that of the transfer pipe 22 and the flow rate is reduced. The odor gas flows into the filtration layer 40 at the bottom of the deodorization tank through the main pipe 33 to filter the dust and water introduced into the odor component as shown in FIG. Is discharged through. For the extraction of such dirt, the slope of the deodorization facility is provided with a gradient of about 3-5 degrees. The filtered odor component passes through the transfer pipe 41 and the support layer 42 filled with crushed stone and then enters the sawdust deodorizing layer 48 to remove ammonia and various odor components through physical adsorption and biological nitrification. Begins. The odor component removed in the sawdust deodorizing layer 48 is introduced into the soil deodorizing layer 49 again, and the adsorption and decomposition by the soil microorganisms are carried out and then flows into the deodorant layer 51 through the transfer pipe 50 and remains. It is processed in contact with Ecosob, which has excellent deodorizing ability against components such as ammonia, hydrogen sulfide, which is difficult to biologically decompose, and traces of methmerethane. This deodorant is discharged to the conveying pipe 56 through the discharge port 54, is conveyed to the lower filtration layer 40, and retained as much as possible in the deodorizing facility, and then discharged through the discharge port 55 together with the dirt such as moisture. Most of the malodorous components that have passed through the deodorant layer 51 are removed and filtered again in the uppermost filter layer 52 and then released into the atmosphere through the final outlet 53 of the malodor.

The conveying system shown in FIG. 5 is used to supply the stabilized supernatant of the storage tank 5 to the oxidative decomposition reaction tank 2, and it is preferable to use an air flotation type. This method floats the supernatant of the storage tank 5 by the buoyancy force of the air supplied from the conveying blower 18 to the air supply pipe 45, and forcibly sprays it with the conveyance spray 31 via the conveying pipe 19. . The air supply pipe 45 of the conveying device is preferably about 1/5 to 1/10 times the diameter of the conveying pipe 19, and the intake port is preferably provided at a position 3/8 from the bottom.

FIG. 6 is a process chart of a method for linking manure and kitchen waste generated in a conventional toilet, and manure is transferred to an anaerobic digestion apparatus through an inclined transfer pipe 47 at a lower portion thereof to the electronic waste together with a kitchen waste input from the upper portion. Anaerobic digestion is carried out through the decomposition process described.

Thus using the kitchen waste and manure treatment method according to the present invention,

First, it is possible to directly treat the kitchen waste at high concentration without diluting it,

Second, because it is processed directly from the source, it can effectively solve the problems such as decay and odor due to transport or loading,

Third, it can produce about 0.3m ³ Gas / kg VS / d as a by-product of the treatment process, can be used as energy,

Fourth, because the treatment residue is only about 5-7 (0.8-1.2)% of manure, it is economical due to the low processing costs associated with maintenance and management,

Fifth, legal restrictions related to treated water can be eliminated by suppressing the generation of treated water.

In addition, as shown in Figure 6, when installed in parallel with the conventional toilet in the amusement park, the manure put into the toilet is directly introduced into the oxidation reactor (2) through the inclined transfer pipe 47 of the lower and the inlet (1) exposed to the ground ), Food waste is injected and food waste and manure are processed at the same time so that it can be digested and decomposed itself without additional treatment facilities, thereby minimizing maintenance and management problems. In this case, care must be taken to ensure that the height of the anaerobic treatment unit body is kept at least 1 m above the toilet bowl.

Hereinafter, the present invention will be described in more detail with reference to Examples. However, the scope of the present invention is not limited to this.

Example 1

The apparatus according to the method of the present invention shown in FIG. 1 was manufactured to the specifications shown in Table 1, and the apparatus was used to independently process kitchen waste and servings generated in a group food service.

device Technical specification Remarks Anaerobic device body 28 m ³ (effective volume 25 m ³ ) Inner film iron plate Microbial Culture Tanks (13) 0.3 x 0.3 x 0.3 m ³ Grid box Gas Opening Valve (25) 0.1-0.15 kg / cm ² Gripping Solenoid Valve Bloa for conveyances (18) 40 ℓ / min For air floating pumps Safety Exhaust Pipe (19) For discharge of trace residual gas Desulfurization Device (26) 0.3 diameter, 0.75 height Hermetic Deodorization Facilities (35) 0.45 x 0.45 x 1.5 Soil deodorization Gas Compression Pump (27) Compression Force 10 kg / cm ² Gas Storage Tanks (28) Tank capacity: 10 days Storage of generated gas Gas Burners (29) Utilization facility of generated gas Boilers (21) Thermostatic Gaon Sludge Check Rod Length 4.5 Sludge Height Check control panel Adjust the operation of the blow

The wastes before and after the food processing in the community food service were collected and separated to remove non-degradable wastes such as vinyl, and then put into a treatment device having an effective capacity of 25 m ³ each at about 50 kg per day. The solids content of the wastes generated was about 16% to 21%, an average of 19%, and the organic content was about 78% to 83%, an average of 80%. Among them, the grain was about 49% (weight), followed by meat, vegetables and others. The pretreatment test of the food waste was introduced into the initial treatment apparatus to remove water, phosphate, and poultry so that the diaphragm at both ends of the methane bath was immersed in order to form an anaerobic environment, and the air in the apparatus was removed using their rapid decomposition. In a small indoor research phase, both ends were filled with water and nitrogen gas was blown to create an anaerobic environment.

After that, kitchen waste and manure were started to be injected, and after about 20 days, gas generation began to stabilize.

Kitchen waste and manure treatment results according to this embodiment are shown in Table 2 below.

Kitchen Waste Water Manure inflow Symbol Other inflow Symbol Other Item density density Item result Item density density Item result pH 3.88 7.24 Gas volume 0.30 pH 7.82 7.86 Gas volume 0.13 TS / VS 19/81% 0.6 / 0.27 Methane content 69% TS / VS 2.4 / 2.3 0.52 / 0.21 Methane content 66% BOD 14.76% 2665 mg / ℓ Sludge volume 7.5% BOD 2.1% 1547 mg / ℓ Sludge volume 0.8% TOC 22.7% 6367 mg / ℓ Organic acid 3840 TOC 2.68% 842 mg / ℓ Organic acid 143 TKN 2.18% 1104 mg / ℓ Alkalinity 3853 TKN 0.51% 1433 mg / ℓ Alkalinity 4333

* Actual value of other items is the value of sealed check and inlet under normal temperature condition.

* Sludge amount is% of residual sludge amount based on the input flow rate.

* Gas: m ³ Gas / kg VS / d, organic acid: mg CH ₃ COOH / L, alkalinity: mg CaCO ₃ / L.

The result is the data of no effluent from December 1995 to the present. After checking the change of moisture using mass balance, about 6.8% of the input water content is used for reaction and about 5.5% with gas Flying to water vapor, the remaining 87.6% was found to be removed by surface evaporation of the check and input ports. Therefore, it can be seen that the treatment of the organic waste including kitchen waste and manure according to the present invention can be disposed of without treatment water for a considerable period of time and the amount of residual sludge is less than 10%, so the cost of maintenance is minimized. Can be.

The method and apparatus of the present invention can improve the existing anaerobic digestion technology to minimize sludge production and solve the problems caused by the generation of treated water, and there is no technical requirement related to maintenance and management. When the kitchen waste is processed by this system, it is treated in high concentrations without dilution at the source, so that about 93% of the input is removed in the form of water and methane and carbon dioxide by evaporation and decomposition, and about 7% of residual sludge and water The cleaning and cleaning problem can be solved once every 2 to 4 years.

Claims (7)

a) directly injecting organic waste, including kitchen waste and manure, at a point of generation with a high solids content of about 20-30%, without pretreatment; b) independently performing a phase change of oxidative decomposition, reduction and stabilization of the anaerobic digestion process using a separator; c) a step in which oxidation, reduction and stabilization reaction steps are installed in one reactor so that independent reaction steps and complementary reaction steps are continuously performed to suppress generation of effluent water; d) a mixing step of inducing contact between the organic material and the microorganism by vertically reciprocating the movable gas storage plate inside the reduction reaction tank using the flow of sludge due to the generated gas pressure and the buoyancy force of the gas; e) a mixing step of culturing and applying in an oxidation reaction tank using pellets of a special random microorganism which promotes an oxidation reaction step, f) a desulfurization and deodorization step for removing the sulfur component contained in the generated gas and treating the malodorous component, g) conveying the supernatant of the storage tank to reduce the odor generated from the oxidation reaction, to adjust the concentration of the input waste and to secure the liquidity of the liquid phase; Multistage continuous wastewater generation controlled anaerobic digestion treatment method of organic waste, characterized in that consisting of. The method of claim 1, wherein the mixing step e) is performed by culturing specific random microbial pellets prepared by mixing artificially collected microorganisms in clay soil and processing them into pellets in a grid-shaped culture tank installed in an oxidation reactor. Anaerobic digestion treatment method characterized in that. The anaerobic digestion method according to claim 1, wherein the desulfurization step of f) is performed by a dry method, the oxidizing agent is Fe ₂ O ₃ , and the deodorizing material of the deodorizing step is a material having a large anion substitution ability such as volcanic ash soil and zeolite. Treatment method. Organic matter inlet (1), oxidative decomposition reaction tank (2), reduction decomposition reaction tank (3), stabilizer (4), storage tank (5), internal gas storage tank (6), phase separation membranes (7, 9, 11), mobile interior A fire extinguishing device body including a gas storage plate 10 and a gas discharge pipe 15; A conveying apparatus for conveying a supernatant liquid, comprising a suction port, a conveying blower 18, an air supply pipe 45, a conveying pipe 19, and a conveying water spray 31; A gas storage and utilization facility comprising a gas automatic shut-off valve 25, a gas compression pump 27, and a gas storage tank 28 and a burner 29 including a desulfurization device 26 to prevent corrosion of the gas storage facility, Deodorization device for removing odor (35), Boiler facilities (21) Continuous multi-stage anaerobic digestion apparatus for organic waste, characterized in that consisting of. The oxidative decomposition reaction tank (2), the reduction decomposition reaction tank (3), the stabilization tank (4) and the storage tank (5) are continuously connected and separated by phase separation membranes (7, 9, 11). And the storage tank (5) has a structure disposed below the inclined surface (12) of the bottom of the oxidative decomposition reaction tank (2) and the reduction decomposition reaction tank (3). The anaerobic digestion apparatus according to claim 4 or 5, wherein the separation membrane has a structure in which the installation interval is adjusted according to the throughput and concentration of the waste, and the inclined surface is changed to about 5 to 17 degrees. The air supply pipe 45 of the conveying apparatus is about 1/5 to 1/10 times the diameter of the conveying pipe 19, and the inlet is provided at the position 3/8 from the bottom. Anaerobic digestion apparatus.