KR100735544B1 - Apparatus for organic wastewater treatments - Google Patents

Abstract

An apparatus for treatment of high concentration organic wastewater is provided to enhance degradation efficiency of organic matters by forming conditions that can activate thermophilic aerobic microorganisms, remove pathogenic microorganisms and Escherichia coli through high temperature conditions, and remove bubbles generated in a large amount during the operation of a thermophilic aerobic digestion system using internal and external bubble removing means and a bubble vacuum sucking means. An apparatus for treatment of high concentration organic wastewater comprises: a thermophilic aerobic digestion reactor that can contain wastewater; a wastewater supply means(A) installed at one side of the thermophilic aerobic digestion reactor; an air supply means(B) connected to a liquid pipe(201) of the wastewater supply means; an internal bubble removing means(C) for sucking bubbles generated during oxidation decomposition of organic matters into the thermophilic aerobic digestion reactor using vacuum to remove the bubbles; a bubble vacuum sucking means(D) for vacuum-sucking and removing bubbles generated by wastewater and air outside the thermophilic aerobic digestion reactor; and a control part(E) for sensing temperature, pH and oxidation-reduction potential of wastewater in the thermophilic aerobic digestion reactor and controlling the wastewater supply means and the air supply means. The wastewater supply means comprises a suction pipe(209), an opening-and-closing valve(305), an internal circulation pump(11), a liquid pipe inflow valve(301), discharge nozzles(207) and outflow nozzles(208), and ground supports(212). The air supply means comprises radial air supply members, an air supply pipe(202), and a blower(12). The internal bubble removing means comprises an internal bubble collection pipe(203), a buoyancy member(204), and a corrugated pipe. The bubble vacuum sucking means comprises a vacuum suction pipe(210), and a return pipe(211). The control part comprises a sensing member(15), a temperature sensor(402), an acidity measuring sensor(401), an oxidation-reduction potential sensor(403), and a control panel(16).

Description

High concentration organic wastewater treatment device {Apparatus For Organic Wastewater Treatments}

1 is a block diagram of a high concentration organic wastewater treatment apparatus according to the present invention,

2 is a cross-sectional view of the straight air supply means according to the invention,

Figure 3 is a side view of the straight air supply means according to the invention,

4 is a cross-sectional view of the radial air supply means according to the present invention,

5 is a side view of the radial air supply means according to the present invention;

6 is a plan view of a high concentration organic wastewater treatment apparatus having a straight feed supply means according to the present invention,

7 is a plan view of a high concentration organic wastewater treatment apparatus having a radial air supply means according to the present invention,

8 is a plan view of a high concentration organic wastewater treatment apparatus in which a radial air supply means according to the present invention is installed in a cylindrical high temperature aerobic digestion reactor;

9 is a plan view of a high concentration organic wastewater treatment apparatus in which a straight air supply means according to the present invention is installed in a cylindrical high temperature aerobic digestion reactor;

10 is a view showing in detail the internal foam removing means and the bubble vacuum suction means according to the present invention,

11 is a perspective view of the internal foam removing means according to the present invention,

12 is a state diagram used in the high concentration organic wastewater treatment apparatus according to the present invention.

          * Description of the symbols for the main parts of the drawings *

A: wastewater supply means B: air supply means

C: Foam removing means D: Foam vacuum suction means

E: control part 1a, 1b, 1c: high temperature aerobic digestion reactor

2a, 2b: air supply member 11: internal circulation pump

12 blower 13 vacuum pump

201: liquid pipe 202: air supply pipe

203: internal bubble collecting tube 204: buoyancy member

205: backwash pipe 206: external bubble collector

210: vacuum suction pipe 220: corrugated pipe

301: liquid pipe opening and closing valve 303: backwash pipe opening and closing valve

305: shut-off valve 402: temperature sensor

The present invention relates to a wastewater treatment apparatus for treating a high concentration of organic wastewater, and in particular, a linear or radial air supply means is installed on the bottom of the high temperature aerobic digestion reaction tank and air is supplied to the blower while supplying wastewater with an internal circulation pump. By mixing and discharging air and wastewater from the discharge nozzle of Sudan, it is possible to increase the decomposition efficiency of organic matter by forming conditions under which hot aerobic microorganisms can be activated through the complete mixing of the wastewater in the high temperature aerobic digestion reactor and oxygen transfer through the air supply. In addition, it removes pathogenic microorganisms and Escherichia coli through high temperature conditions and controls bubbles generated in large quantities during operation of high temperature aerobic extinguishing device using internal foam removing means, external foam removing means and foam vacuum suction means to minimize the occurrence of problems. Of high concentration organic wastewater treatment system The.

In general, high concentration organic wastes include manure, livestock manure, desorption filtrate of food wastes, surplus sludge generated during wastewater treatment, and such high concentration organic wastes can be viewed in two aspects.

First, untreated high concentration organic wastewater adversely affects nearby rivers and the surrounding environment and can become a major cause of environmental pollution, including the occurrence of disease.

Second, on the other hand, it is valuable as a resource because it can be reused through a biological or physicochemical process.

As such, as the industrialization proceeds, the necessity of effectively treating high concentration organic wastewater is increasing, and a wastewater treatment apparatus has been developed to efficiently treat high concentration organic wastewater.

On the other hand, oxygen is one of the important factors when applying the high temperature aerobic digestion tank to treat high concentration organic wastewater, oxygen in the atmosphere is absorbed or diffused into the water by the Pick law, and oxygen is absorbed by partial pressure. It dissolves in a certain amount. The concentration of dissolved oxygen depends on the water temperature, atmospheric pressure and the concentration of impurities.

 In particular, the increase in the water temperature increases the value of the molecular diffusion coefficient, decreases the viscosity of the water and increases the rate of rise of the bubbles, the shorter the exposure time of the bubbles, the lower the oxygen transfer efficiency. When high concentration organic wastewater is treated by high temperature aerobic digestion, the water temperature is high and the concentration of impurity is very high.

Therefore, in the high temperature aerobic digestion tank, dissolved oxygen is reduced through stable oxygen transfer, and high temperature aerobic microorganisms are killed and heat of oxidization is reduced, making it difficult to maintain high temperature conditions.

Therefore, excess oxygen must be supplied to the high-temperature aerobic microorganisms in order to decompose organic matter. In order to supply excess oxygen, it is necessary to inject pure oxygen or to supply excess air, thereby reducing the economic efficiency and efficiency of operation due to the increase in the capacity of the device, thereby requiring an appropriate air supply device.

The conventional air supply apparatus includes a spiral air supply apparatus, a self-priming air supply apparatus using a venturi tube, and a high speed mixed air supply apparatus.

The helical air supply device is a device for forming a jet flow by installing a spiral screw at the end of the high-speed rotating pipe and the air flow into the reactor by the jet flow formed therein, the self-suction air using the venturi pipe The supply device is a device that injects air into the reactor by varying the diameter of the pipe and sucking the liquid into the pipe of the large diameter and air into the pipe of the small diameter.

The high-speed mixed air supply device circulates the high concentration organic wastewater in the high temperature aerobic digestion reactor at a high speed by a pump, and supplies air using a blower in the direction of the high concentration organic wastewater to be circulated at high speed to supply air supplied from the discharge nozzle. And the circulating wastewater to increase the contact efficiency between the air and the wastewater to increase the efficiency of oxygen transfer and the discharge pressure from the nozzle to the reaction tank is increased to mix the high concentration organic wastewater in the reaction tank.

However, as described above, the conventional spiral air supply device has a problem in that when the pressure is increased by the generated gas inside the high temperature aerobic digestion reaction tank, waste water or foam flows backwards inside the high temperature aerobic digestion reaction tank and leaks to the outside, The self-contained air supply device using the venturi tube is mainly composed of a pipe, the clogging phenomenon and the configuration is complicated, the pressure loss due to a large number of curved pipes has a problem that the operating power is increased, the high-speed mixed air The supply device has a large disadvantage in that the power required for supplying and agitating the air into the high temperature aerobic digestion reactor is large.

In addition, since the conventional wastewater treatment device does not adequately control the temperature of the reaction tank and does not sufficiently kill harmful bacteria, the safety of workers' health and production products (biomass) due to pathogenic microorganisms and coliform bacteria remaining in high concentration organic wastewater. There was a difficulty in securing.

In addition, in the conventional resource treatment apparatus, the mass and capacity of the produced biomass are increased due to moisture control material and dilution during the treatment of high concentration organic wastewater, and economical and environmental disposal is not only possible. Due to the increased cost and the failure to produce high-purity biomass.

In addition, the conventional foam removing method includes a physical treatment method and a chemical treatment method, and the method of breaking bubbles by using a blade in the reaction tank is installed inside the reaction tank, so that the entire operation of the reactor should be stopped when corrosion and failure occur. A chemical treatment method using an antifoaming agent has a problem of lowering oxygen transfer efficiency due to residual silicone and other chemicals in the antifoaming agent.

The present invention has been made in view of this point, and install a straight or radial air supply means on the bottom of the high temperature aerobic digestion reaction tank and supply air to the blower while supplying wastewater to the internal circulation pump to supply air from the discharge nozzle of the air supply means And wastewater are mixed and discharged to form conditions for activating high-temperature aerobic microorganisms through the complete mixing of the wastewater in the high-temperature aerobic digestion reactor and oxygen transfer through air supply, thereby increasing the decomposition efficiency of organic matter and The purpose is to remove the pathogenic microorganisms and E. coli and to minimize the problem by controlling a large amount of bubbles generated during the operation of the high temperature aerobic digestion apparatus by using the internal bubble removing means, the external bubble removing means and the bubble vacuum suction means.

This object includes a high temperature aerobic digestion reactor capable of containing waste water; A wastewater supply means installed on one side of the high temperature aerobic digestion reaction tank to supply wastewater through a liquid pipe; Air supply means connected to the liquid pipe of the wastewater supply means to supply air to be mixed with the wastewater and discharged; and to activate the high-temperature aerobic microorganism by mixing wastewater and air supplied from the wastewater supply means and the air supply means. Internal foam removing means for sucking and removing the bubbles generated during the oxidative decomposition of the organic matter in a high temperature aerobic digestion reaction tank by vacuum; Foam vacuum suction means for suctioning and removing the foam generated by the waste water and air supplied by the waste water supply means and the air from the outside of the high temperature aerobic digestion reaction tank by vacuum; A high concentration organic wastewater treatment consisting of a control unit for sensing the temperature, pH and redox potential of the wastewater of the high temperature aerobic digestion reaction tank and controlling the wastewater supply means and the air supply means to maintain the high temperature aerobic microorganisms in the optimized active state. By providing a device.

The waste water supply means includes: a suction pipe connected to one side of a bottom surface of the high temperature aerobic digestion reaction tank and sucking the stored waste water; An on / off valve for opening and closing the suction pipe; An internal circulation pump installed at the suction pipe to supply the waste pipe with suction power and earth output; A liquid pipe inlet valve installed at a liquid pipe inlet of the high temperature aerobic digestion reactor to open and close the waste water; A discharge nozzle and a discharge nozzle for discharging the waste water to the bottom or side of the liquid pipe; It is preferable that it consists of a bottom support body which supports the said liquid pipe at a bottom face.

The air supply means includes a straight or radial air supply member connected to the discharge nozzle of the liquid pipe to mix air and waste water; An air supply pipe connected to the straight or radial air supply member to supply air; It is preferable that the blower is configured to blow air into the air supply pipe.

The straight air supply member may include: a support for connecting and supporting a bottom surface of the air supply pipe and an upper surface of the liquid pipe; It is preferable that the branch pipe is branched to both sides of the support from the air supply pipe to supply air to the discharge nozzle.

The radial air supply member may include: a main body which connects a bottom surface of the air supply pipe and an upper surface of the liquid pipe, is formed in a cylindrical shape, and a plurality of discharge nozzles are fixed in a radial direction; A guide member formed in the shape of a flying body that guides air and wastewater to the discharge nozzle on the inner surface of the main body; It is preferably made of a support for fixing the guide member in the body.

And, the internal bubble removing means, the internal bubble collecting pipe is fixed to one inner surface of the high temperature aerobic digestion reaction tank, and having a foam inlet hole for introducing a bubble over a predetermined section from the central portion to the upper portion; A buoyancy member fixedly slidably outside the inner bubble collecting tube to collect bubbles floating on the surface of the wastewater while being elevated by buoyancy of the wastewater; The bottom of the buoyancy member is fixed to the shape surrounding the inner bubble collecting pipe and the other end is sealed to the outer surface of the inner bubble collecting pipe to prevent the inflow of waste water into the foam inlet hole of the lower portion of the buoyancy member as a corrugated pipe It is preferable that it is made.

On the upper surface of the buoyancy member is formed an inlet groove which is inclined to be inclined so as to facilitate the introduction of bubbles to the center, the foam inlet hole of the inner bubble collecting tube, it is preferable that the plurality of holes or a partial cut shape in the longitudinal direction.

The foam vacuum suction means includes: a vacuum suction tube fixed to one side of the high temperature aerobic digestion reaction tank to absorb the foam; A vacuum pump for compressing the foam sucked from the vacuum suction pipe to a liquid; L is preferably made of a return tube for returning the liquefied waste water in the vacuum pump to a high temperature aerobic digestion reaction tank.

And, the control unit, the sensing member for detecting whether the bubble height of the waste water in the high temperature aerobic digestion reaction tank is abnormally high; A temperature sensor for sensing a temperature of wastewater in the high temperature aerobic digestion reactor; An acidity sensor for measuring acidity of wastewater in the high temperature aerobic digestion reactor; A redox potential sensor for sensing a redox potential value of the wastewater in the high temperature aerobic digestion reactor; It consists of a control panel for controlling the waste water supply means and the air supply means by optimizing the temperature, acidity and redox potential value of the waste water by receiving signals from the sensing member, the temperature sensor, the acidity measurement sensor and the redox potential sensor. desirable.

And, the sensing member, using an ultrasonic radar to detect the water level of the waste water distance using ultrasonic waves, the temperature sensor, the internal temperature of the high temperature aerobic digestion reactor maintained at 55 ℃ ~ 65 ℃ to 72 ℃ or more If detected, it is preferable to stop the blower and start only the internal circulation pump.

And, the outer bubble collecting pipe which is drawn from the upper outer surface of the outer side of the high temperature aerobic digestion reaction tank is connected to the liquid pipe to collect the bubbles in the reaction tank; It is preferable to further include a back washing pipe connected to the inside of the high temperature aerobic digestion reaction tank to block the on / off valve in the liquid pipe and to operate the blower to reverse the foreign substances caught in the discharge nozzle to backwash the reaction into the reaction tank.

Hereinafter, the structure of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a high concentration organic wastewater treatment apparatus according to the present invention, Figure 2 is a cross-sectional view of the linear air supply means according to the invention, Figure 3 is a side view of the linear air supply means according to the invention, Figure 4 is A cross-sectional view of the radial air supply means according to the present invention, Figure 5 is a side view of the radial air supply means according to the invention, Figure 6 is a plan view of a high concentration organic wastewater treatment apparatus having a straight supply supply means according to the present invention, 7 is a plan view of a high concentration organic wastewater treatment apparatus having a radial air supply means according to the present invention, Figure 8 is a plan view of a high concentration organic wastewater treatment apparatus installed in a cylindrical high temperature aerobic digestion reaction tank, 9 is a high concentration of organic wastewater treatment apparatus installed in a cylindrical high temperature aerobic digestion reaction tank according to the present invention 10 is a plan view of the inner bubble removing means and the bubble vacuum suction means according to the present invention in detail, Figure 11 is a perspective view of the inner bubble removing means according to the present invention, Figure 12 is a high concentration organic It is a state of use of the waste water treatment apparatus.

First, the constitution of the high concentration organic wastewater treatment apparatus according to the present invention includes a high temperature aerobic digestion reaction tank (1a) (1b) (1c) capable of containing wastewater upon oxidative decomposition of organic matter by activation of high temperature aerobic microorganisms; A wastewater supply means (A) installed at one side of the high temperature aerobic digestion reaction tank (1a) (1b) (1c) to supply wastewater through the liquid pipe (201); Air supply means (B) connected to the liquid pipe (201) of the waste water supply means (A) to supply air to be mixed with the waste water and to be discharged from the waste water supply means (A) and the air supply means (B) Removal of internal bubbles to inhale and remove the bubbles generated during oxidative decomposition of organic matter by vacuum in the high temperature aerobic digestion reaction tank (1a) (1b) (1c) by activating the high temperature aerobic microorganism by mixing the supplied waste water and air. Means (C); Foam vacuum for sucking and removing the foam generated by the wastewater and air supplied from the wastewater supply means (A) and the air supply means (B) from the outside of the high temperature aerobic digestion reaction tank (1a) (1b) (1c) by vacuum. Suction means (D); Optimize the high temperature aerobic microorganism by measuring the temperature, pH and redox potential of the waste water in the high temperature aerobic digestion reaction tank (1a) (1b) (1c) to control the waste water supply means (A) and the air supply means (B) The controller E is configured to maintain the active state.

The waste water supply means (A) includes: a suction pipe (209) connected to one side of a bottom surface of the high temperature aerobic digestion reaction tank (1a) (1b) (1c) to suck the stored waste water; An on / off valve 305 for opening and closing the suction pipe 209; An internal circulation pump (11) installed at the suction pipe (209) to exert suction power and earth output of the waste water to supply the liquid pipe (201); A liquid pipe inlet valve 301 which is installed at the inlet of the liquid pipe 201 of the high temperature aerobic digestion reactor 1a, 1b, 1c to open and close the waste water; A discharge nozzle 207 and a discharge nozzle 208 for injecting waste water to the bottom or side surfaces of the liquid pipe 201; It consists of a bottom support 212 to support the liquid pipe 201 from the bottom.

The air supply means (B) includes a straight or radial air supply member (2a) (2b) connected to the discharge nozzle (207) of the liquid pipe (201) to mix air and wastewater; An air supply pipe 202 connected to the straight or radial air supply members 2a and 2b to supply air; The blower 12 is configured to blow air into the air supply pipe 202.

Opening and closing valve 302 is provided in the air pipe 202 to open and close the movement of air.

2 and 3, the straight air supply member 2a includes: a support 198 for connecting and supporting a bottom surface of the air supply pipe 202 and an upper surface of the liquid pipe 201; Branched from the air supply pipe 202 to both sides of the support 198 is made of a branch pipe (202a) for supplying air to the discharge nozzle (207).

4 and 5, the radial air supply member 2b connects the bottom surface of the air supply pipe 202 and the top surface of the liquid pipe 201 to have a cylindrical shape, and is formed on the side surface of the radial air supply member 2b. A main body 228 to which the discharge nozzle 207 is fixed radially; A guide member 230 formed in an air vehicle shape for guiding air and wastewater to the discharge nozzle 207 on the inner surface of the main body 228; It consists of a support 232 for fixing the guide member 230 in the body 228.

The discharge nozzle 207 formed in the main body 228 is preferably formed at an angle of 30 degrees.

In addition, as shown in Figure 10 and 11, the internal foam removing means (C) is fixed to one inner surface of the high temperature aerobic digestion reaction tank (1a) (1b) (1c), from the central portion to the upper portion An internal bubble collection pipe 203 having a bubble inlet hole 203a for introducing bubbles over a predetermined section; A buoyancy member 204 fixed to the outside of the inner bubble collection pipe 203 to collect bubbles floating on the surface of the wastewater while being elevated by buoyancy of the wastewater; The bottom surface of the buoyancy member 204 is fixed in a shape surrounding the inner bubble collecting tube 203 and the other end is sealed to the outer surface of the inner bubble collecting tube 203, the foam of the lower portion of the buoyancy member 204 The inlet hole 203 is made of a corrugated pipe 220 to prevent the inflow of waste water.

The inlet groove 204a is formed on the upper surface of the buoyancy member 204 so as to be inclined to facilitate the inflow of bubbles into the center, and the bubble inlet hole 203a of the inner bubble collection pipe 203 has a plurality of holes. It is preferable to form in the shape or a partial cutaway shape in the longitudinal direction.

In addition, the inner bubble collecting pipe 203 is not exposed to the upper portion of the inlet groove 204a of the buoyancy member 204, and is formed to guide the up and down movement of the corrugated pipe 220 in the corrugated pipe 220. In order to facilitate the flow of bubbles into the inlet groove 204a of the buoyancy member 204.

And, the foam vacuum suction means (D), the vacuum suction pipe 210 is fixed to one side of the high temperature aerobic digestion reaction tank (1a) (1b) (1c) to absorb the foam; A vacuum pump 13 for compressing the bubbles sucked from the vacuum suction pipe 210 to make a liquid; It consists of a return pipe 211 for returning the waste water liquefied in the vacuum pump 13 to the high temperature aerobic digestion reaction tank (1a) (1b) (1c).

And, the control unit (E), the sensing member 15 for detecting whether the bubble height in the high temperature aerobic digestion reaction tank (1a) (1b) (1c) is abnormally high; A temperature sensor (402) for sensing the temperature of the wastewater in the high temperature aerobic digestion reactor (1a) (1b) (1c); An acidity sensor 401 for measuring acidity of wastewater in the high temperature aerobic digestion reaction tanks 1a, 1b and 1c; A redox potential sensor (403) for sensing a redox potential value of the wastewater in the high temperature aerobic digestion reactor (1a) (1b) (1c); The sensing member 15, the temperature sensor 402, the acidity measurement sensor 401 and the redox potential sensor 403 receives a signal to control the wastewater supply means (A) and air supply means (B) to control the wastewater It consists of a control panel 16 that controls to optimize the temperature, acidity and redox potential of the.

In addition, the sensing member 15, using an ultrasonic radar for detecting the water level of the waste water using ultrasonic waves, the temperature sensor 402, the internal temperature of the high temperature aerobic digestion reaction tank (1a) (1b) (1c) It is configured to stop at 55 ℃ ~ 65 ℃ and 72 ℃ ℃ or more and stop the blower 12 and to operate only the internal circulation pump (11).

And, as shown in Figure 1, the external foam collection to be drawn from the upper outer surface of the outside of the high temperature aerobic digestion reaction tank (1a) (1b) (1c) is connected to the liquid pipe 201 to collect bubbles in the reaction tank Tube 206; It is connected from the upper end of the high temperature aerobic digestion reaction tank (1a) (1b) (1c) to block the opening and closing valve 305 in the liquid pipe 201 and to operate the blower 12 is caught on the discharge nozzle 208 A backwash pipe 205 for backwashing the foreign matter to backwash the reaction vessel is further provided.

The back washing pipe 205 is provided with a back washing pipe opening / closing valve 303, and the outer bubble collecting pipe 206 is preferably provided with a valve to block or open the movement of waste water or foam.

When applying the high temperature aerobic digestion reaction tank (1a) (1b) (1c), having an effective depth of about 5 ~ 7.5m and having a height of the foam layer of 0.5 ~ 1.5m to hold the heat to escape to the top of the reactor Since it is used as a role, it is preferable to install the depth of the entire reactor to 5.5 ~ 9m.

The operation of the high temperature aerobic digestion reactor (1a) (1b) (1c) may be operated in a batch, semi-continuous, continuous inflow operation mode, in the present invention affects the temperature and pH, such as the critical operating factors of the high temperature aerobic digestion reactor It is preferable to adopt semi-continuous and continuous inflow operation to distribute the influent into the reactor so as not to affect the temperature.

Or less, on the basis of the accompanying drawings to look at the operation and effect of one embodiment of the present invention.

As shown in FIG. 12, the wastewater is stored in the high temperature aerobic digestion reactor 1a and the internal circulation pump 11 of the wastewater circulation supply means A is operated to suck the wastewater through the suction pipe 209 to supply the liquid pipe 201. To be supplied again.

Then, the air is blown to the air supply pipe 202 through the blower 12 of the air supply means (B).

In this state, as shown in FIGS. 2 and 3, when the straight air supply member 2a is applied, the wastewater transferred to the liquid pipe 201 is discharged to the discharge nozzle 207 at the side and the discharge nozzle 208 at the bottom. Air is discharged to the air supply pipe 202, the air is conveyed through the branch pipe 202a branched into two strands and mixed with the waste water discharged to the discharge nozzle 207 to generate air bubbles The high temperature aerobic microorganisms in the digestion reaction tank 1a are activated to remove organic matter.

On the other hand, as shown in Figure 4 and 5, when the radial air supply member (2b) is applied, the waste water transferred to the liquid pipe 201 is introduced into the upper body 228, the support 232 Along with the surface of the guide member 230, which is supported by the air, the air is spread radially along the surface of the guide member 230, and the air that has been transferred to the air supply pipe 202 also descends along the upper surface of the guide member 230, and then discharges the nozzle 207. ) Is discharged into the reaction tank while generating bubbles in the state mixed with the waste water.

Wastewater discharged to the bottom through the discharge nozzle 208 serves to circulate the solids deposited on the bottom surface of the reactor.

As such, the air and the wastewater mixture discharged to the high temperature aerobic digestion reaction tank 1a through the discharge nozzle 207 generate bubbles to supply oxygen to activate the high temperature aerobic microorganisms, and generate heat of oxidation to generate internal temperature of the reaction tank. It raises the temperature of the wastewater, and induces bubbles to act as a warming layer to promote the active conditions of high temperature aerobic microorganisms.

The high temperature aerobic microorganisms in the high temperature aerobic digestion reaction tank (1a) is most active at 45 ℃ ~ 65 ℃, but most pathogenic microorganisms and E. coli will be killed when contacted at 50 ℃ for 30 minutes, so the temperature inside the reactor 55 ℃ ~ 65 It is most preferable to keep it at about ℃.

Concentration of the high concentration of organic wastewater in the high temperature aerobic digestion tank (1a) is 2.5% ~ 5% of the suitable solids, if the concentration of the solid is too low, the conditions that can be activated because the lack of energy sources for high temperature aerobic microorganisms It has a problem of generating insufficient heat of oxidation to form.

On the other hand, if excessive foam is formed in the high temperature aerobic digestion reaction tank (1a), it is collected by the external bubble collection pipe 206 formed on one side of the reaction tank is circulated again through the liquid pipe 201.

In addition, if the bubble is not removed by the outer bubble collecting tube 206, the buoyancy member 204, which is the inner bubble removing means (A) shown in FIGS. 10 and 11, moves up and down along the level of the wastewater. It is collected through the inlet groove 204a and collected through the bubble inlet hole 203a of the internal bubble collection pipe 203 to return to the liquid pipe 201 connected to the lower portion.

The bottom and the other end of the buoyancy member 204 is collected at one end of the buoyancy member 204 to prevent wastewater from flowing through the bubble inlet hole 203a of the inner bubble collection pipe 203 in the lower section of the buoyancy member 204. The corrugated pipe 220 is installed in a shape of protecting the bubble inlet hole 203a in a sealed state in an intermediate section of the pipe 203.

As the buoyancy member 203 is raised and lowered on the outer surface of the inner bubble collection tube 203, the corrugated pipe 220 is repeatedly closed or unfolded.

And, if the bubbles are not removed by the inner bubble collection pipe 203, by operating the vacuum pump 13 of the bubble vacuum suction means (D) forcibly sucked bubbles through the vacuum suction pipe 210 and condensing the bubbles To return to the return pipe 211 to remove the bubbles.

In addition, a control unit E is installed to measure temperature, acidity and redox potential in the high temperature aerobic digestion reactor 1a, and the acidity sensor 401 and the temperature sensor 402 of the control unit E. And the redox potential sensor 403 detects an appropriate holding temperature in the control panel 160 by sensing the acidity amount, temperature and redox potential value of the wastewater in the reaction tank to determine the internal holding pump of the wastewater supply means (A). 11) and the blower 12 of the air supply means (B), by controlling the degree of activation of microorganisms by controlling the amount of waste water and air can be maintained the appropriate oxygen supply amount, temperature, acidity and redox potential value.

The acidity refers to a pH value, and determines whether the wastewater in the reaction tank is acidic or alkaline by using the acidity measurement sensor 401, and when the acidity in the reaction tank deviates from the reference value, it is determined by the control panel 160. By adjusting the internal circulation pump 11 and the blower 12 to adjust the acidity.

In addition, the redox potential is controlled when a small potential difference occurs as the wastewater in the reactor is oxidized to acidity or reduced to alkaline, and the redox potential in the reactor is outside this value, for example, when the reference value is set to ± 200mv. The panel 160 senses and controls the internal circulation pump 11 and the blower 12 to adjust the redox potential in the reactor.

The acidity measurement sensor 401, the temperature sensor 402 and the redox potential sensor 403 of the control unit E comprehensively determine and control the respective data in the control panel 160 to activate the high temperature aerobic microorganisms. If possible, adjust the air supply and internal circulation.

In addition, the sensing member 15 of the control unit E mainly uses an ultrasonic radar, and detects a signal for firing and returning ultrasonic waves to the wastewater stored in the reaction tank to control the wastewater supply pipe not shown in the control panel 16. Maintain an appropriate level.

Meanwhile, in the straight and radial air supply members 2a and 2b, the inner part of the discharge nozzle 207 where the liquid pipe 201 and the air pipe 202 and the discharge pipe 202a meet is clogged due to a foreign substance of high concentration organic wastewater. This is easy to occur.

In order to solve this problem, when the operation of the internal circulation pump 11 is stopped, the shut-off valve 305 is closed from the outside, and the blower 12 is operated to inject air into the air pipe 202, the discharge nozzle 207 is formed. When the pressure drops to the ejector method, the liquid flows into the discharge nozzle 207 through the movement force of the air, and moves in the opposite direction to the usual flow direction of the fluid, so that the foreign substances stuck in the nozzle part are connected to the liquid pipe 201 and the backwash pipe 205. By returning to the outside or inside of the reaction tank (1a) through the) to the foreign matter remaining in the inside of the discharge nozzle 207 is backwashed.

Therefore, as described above, when using a high concentration organic wastewater treatment apparatus according to the present invention, by installing a straight or radial air supply means on the bottom of the high-temperature aerobic digestion reaction tank and supplying wastewater to the blower while supplying wastewater to the internal circulation pump Air and waste water are mixed and discharged from the discharge nozzle of the air supply means to form the conditions for the high temperature aerobic microorganism to be activated through the complete mixing of the waste water of the high temperature aerobic digestion reactor and the oxygen transfer through the air supply, In addition, it eliminates pathogenic microorganisms and Escherichia coli through high temperature conditions, and controls bubbles generated in large quantities during operation of high temperature aerobic extinguishing devices using internal foam removing means, external foam removing means, and foam vacuum suction means. Very useful and effective inventions to minimize All.

That is, the present invention, when using the high temperature aerobic digestion reaction tank of the present invention in the treatment process of food waste dehydration solution can solve the problem of pH lowering due to lactic acid bacteria and acid producing bacteria of the characteristics of food waste in Korea, high temperature aerobic Lactobacillus and acid-producing bacteria in the digestion reaction tank is killed at more than 45 ℃ or pH5, it is detected by the control unit has an advantage that can be stably processed food waste desorption filtrate because it appropriately controls the temperature and pH.

In addition, the present invention, the conventional high-temperature aerobic digestion method is injected into the air more than necessary to supply excess air, the economic part is weak due to the excessive power cost, but through the automatic control method through the temperature to the oxygen demand of the high-temperature aerobic microorganisms By sending a signal from the control unit to the blower and the internal circulation pump has the advantage that can significantly reduce the maintenance cost of operation by minimizing the waste of power.

In addition, it is a very useful and effective invention that can produce a stabilized biomass (liquid fertilizer) in which pathogenic microorganisms and Escherichia coli are killed and high molecular weight molecules are reduced through the high temperature aerobic digestion tank of the present invention.

Claims (14)

A high temperature aerobic digestion reactor which can contain waste water; A wastewater supply means installed on one side of the high temperature aerobic digestion reaction tank to supply wastewater through a liquid pipe; An air supply means connected to the liquid pipe of the waste water supply means to supply air to mix with the waste water and to discharge the air; The high temperature aerobic microorganism becomes an active condition by mixing the waste water and the air supplied from the waste water supply means and the air supply means, and the bubbles generated during the oxidative decomposition of organic matter are suctioned and removed from the inside of the high temperature aerobic digestion reactor by vacuum. Bubble removing means; Foam vacuum suction means for suctioning and removing the foam generated by the waste water and air supplied by the waste water supply means and the air from the outside of the high temperature aerobic digestion reaction tank by vacuum; A high concentration of the aerobic digestion reaction tank is characterized in that the control unit for detecting the temperature, pH and redox potential of the waste water and controlling the waste water supply means and the air supply means to maintain the high temperature aerobic microorganisms in the optimized active state Organic Wastewater Treatment System. According to claim 1, The waste water supply means, the suction pipe is connected to the bottom side of the high temperature aerobic digestion reaction tank to suck the stored waste water; An on / off valve for opening and closing the suction pipe; An internal circulation pump installed at the suction pipe to supply the waste pipe with suction power and earth output; A liquid pipe inlet valve installed at a liquid pipe inlet of the high temperature aerobic digestion reactor to open and close the waste water; A discharge nozzle and a discharge nozzle for discharging the waste water to the bottom or side of the liquid pipe; High concentration organic wastewater treatment apparatus, characterized in that made of a bottom support to support the liquid pipe from the bottom. 3. The air supply system according to claim 1 or 2, wherein the air supply means comprises: a straight or radial air supply member connected to the discharge nozzle of the liquid pipe to mix air and waste water; An air supply pipe connected to the straight or radial air supply member to supply air; High concentration organic wastewater treatment apparatus, characterized in that the blower for blowing air to the air supply pipe. The method of claim 3, wherein the straight air supply member, and a support for connecting and supporting the bottom surface of the air supply pipe and the upper surface of the liquid pipe; A high concentration organic wastewater treatment device, characterized in that the branch is made to branch to both sides of the support from the air supply pipe to supply air to the discharge nozzle. The apparatus of claim 3, wherein the radial air supply member comprises: a main body which connects a bottom surface of the air supply pipe with an upper surface of the liquid pipe, is formed in a cylindrical shape, and a plurality of discharge nozzles are fixed in a radial direction; A guide member formed in the shape of a flying body that guides air and wastewater to the discharge nozzle on the inner surface of the main body; High concentration organic wastewater treatment apparatus, characterized in that consisting of a support for fixing the guide member in the body. According to claim 1, wherein the internal bubble removing means is fixed to one inner surface of the high temperature aerobic digestion reaction tank, the internal bubble collection tube having a bubble inlet hole for introducing a bubble over a predetermined section from the central portion to the upper portion and; A buoyancy member fixedly slidably outside the inner bubble collecting tube to collect bubbles floating on the surface of the wastewater while being elevated by buoyancy of the wastewater; The bottom of the buoyancy member is fixed to the shape surrounding the inner bubble collecting pipe and the other end is sealed to the outer surface of the inner bubble collecting pipe to prevent the inflow of waste water into the foam inlet hole of the lower portion of the buoyancy member as a corrugated pipe High concentration organic wastewater treatment apparatus, characterized in that made. According to claim 6, The buoyancy member is formed on the top surface of the buoyancy member inclined to be inclined so as to facilitate the inlet of the bubble, the foam inlet hole of the inner bubble collecting tube, a plurality of holes in the shape of the longitudinal or partially cut in the longitudinal direction High concentration organic wastewater treatment apparatus, characterized in that. According to claim 1, wherein the bubble vacuum suction means, the vacuum suction tube is fixed to one side of the high temperature aerobic digestion reaction tank to absorb the foam; A vacuum pump for compressing the foam sucked from the vacuum suction pipe to a liquid; High concentration organic wastewater treatment apparatus comprising a return tube for returning the liquefied wastewater from the vacuum pump to a high temperature aerobic digestion reaction tank. According to claim 1, wherein the control unit, The sensing member for detecting whether the bubble height of the waste water in the high temperature aerobic digestion reactor is abnormally high; A temperature sensor for sensing a temperature of wastewater in the high temperature aerobic digestion reactor; An acidity sensor for measuring acidity of wastewater in the high temperature aerobic digestion reactor; A redox potential sensor for sensing a redox potential value of the wastewater in the high temperature aerobic digestion reactor; It consists of a control panel for controlling the waste water supply means and the air supply means by optimizing the temperature, acidity and redox potential value of the waste water by receiving signals from the sensing member, the temperature sensor, the acidity measurement sensor and the redox potential sensor. High concentration organic wastewater treatment apparatus. The method of claim 9, wherein the sensing member, using an ultrasonic radar for detecting the water level of the waste water distance by using ultrasonic waves, the temperature sensor, the internal temperature of the high temperature aerobic digestion reactor maintains 55 ℃ to 65 ℃ The high concentration organic wastewater treatment apparatus, characterized in that for stopping the blower and operating only the internal circulation pump when detected at 72 ℃. According to claim 1, External foam collecting tube which is drawn from the upper outer surface of the outer side of the high temperature aerobic digestion reaction tank connected to the liquid pipe to collect the bubbles in the reaction tank; It is further connected to the inside of the high temperature aerobic digestion reaction tank to block the on-off valve in the liquid pipe and the blower to operate the blower back flow foreign matter caught in the discharge nozzle to further backwash into the reaction tank characterized in that the high concentration organic Wastewater treatment device. delete delete delete

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