KR100885540B1 - Apparatus and method for zero sludge of organic wastewater treatment of high concentration - Google Patents

Abstract

The present invention relates to a high-concentration organic wastewater treatment apparatus, and in particular, to a high-density organic wastewater with high-temperature aerobic microorganisms, and to a high-liquid organic wastewater to sludge treatment of high-density organic wastewater by decomposing solid-liquid separation and concentration and hardly decomposable organic matter. An apparatus and a method for sludgeization are provided. To this end, the present invention is a high-concentration organic wastewater treatment apparatus for decomposing and reducing a high-concentration organic wastewater, the concentration equipment for concentrating the solids content in the high-concentration organic wastewater out of the high-concentration organic wastewater to the reference solids content and the inflow from the concentration facility A high aerobic digestion tank that decomposes using a high concentration organic wastewater having a reference solids content as a food for microbial preparations, and a filter that separates and concentrates the high concentration organic wastewater decomposed by the high aerobic digestion tank, and the concentrated high concentration introduced from the filter. A part of the organic wastewater is subjected to Fenton reaction and irradiated with light (light) to decompose the hardly decomposable high concentration organic wastewater, and then the overall Fenton reaction tank and the high concentration organic wastewater which are returned to the high temperature aerobic digestion tank are decomposed and reduced. It is configured to include a microcomputer to control the operation.

High concentration organic wastewater, ATAD bath, ceramic membrane, photophentone oxidation

Description

Apparatus and method for sludge concentration of high concentration organic wastewater {APPARATUS AND METHOD FOR ZERO SLUDGE OF ORGANIC WASTEWATER TREATMENT OF HIGH CONCENTRATION}

1 is an exemplary view schematically showing a configuration of a sludge-sludge-densing apparatus of high concentration organic wastewater according to an embodiment of the present invention.

Figure 2 is a flow chart showing a sludge-sludged method of high concentration organic wastewater according to an embodiment of the present invention.

<Description of main reference numerals in the drawings>

11: Concentration plant 13: ATAD tank

15: filter 17: photophenton reactor

19: microcomputer

The present invention relates to a high-concentration organic wastewater treatment apparatus, and in particular, to a high-density organic wastewater with high-temperature aerobic microorganisms, and to a high-liquid organic wastewater to sludge treatment of high-density organic wastewater by decomposing solid-liquid separation and concentration and hardly decomposable organic matter. An apparatus and a method for sludgeization are provided.

In general, high concentration organic wastewater treatment method is to use a high temperature aerobic digestion (ATAD) tank alone, using ozone oxidation method, decomposes high concentration organic wastewater using ozone and caustic soda and combines aerobic MBR (Membrane Bio Reactor) How to do it.

The method of using the ATAD tank alone in the high concentration organic wastewater treatment method is a biological treatment method, there is no need for external heating, it is economical compared to the physical heating and has the advantage of reducing the organic matter. However, since the high concentration organic wastewater treatment method is a method using only microorganisms alone, it is difficult to decompose hardly decomposable organic substances and a large amount of sludge is generated.

In addition, ozone uses high-concentration organic wastewater that decomposes and solubilizes high-concentration organic wastewater into a bioreactor (anoxic / anaerobic) to use as an external carbon source and simultaneously treat sewage and high-concentration organic wastewater to remove high-concentration organic wastewater. Technology. The apparatus of the method using the ozone consists of a hydrocyclone, an ozone generating device and a contact tank, and a decomposed high concentration organic wastewater transfer pump. Here, the hydrocyclone controls the accumulation of inorganic matter by separating the inorganic matter having a relatively high specific gravity through a high-speed injection rotational movement of high concentration organic wastewater. The ozone contacting tank kills and decomposes microorganisms in a high concentration organic wastewater with strong oxidizing power of ozone and decomposes hardly decomposable organic matter. However, the apparatus according to the method using ozone is economical because the installation cost and operating cost of the ozone device is enormous.

In addition, the method of decomposing high concentration organic wastewater using ozone and caustic soda and combining aerobic MBR draws a high concentration of organic wastewater of aerobic MBR at a ratio, and after alkali treatment and ozone treatment, the solubilized decomposable organic matter is returned to aerobic MBR again. Disassemble it. However, the method using ozone and caustic soda has a problem of shortening the life of the membrane due to fouling of the membrane. In addition, there is an economic problem such as an increase in the replacement frequency due to shortening the life of the membrane, a huge cost of installing and operating an ozone device.

The present invention was created in order to solve the above problems, high-density organic and high-density organic matter decomposition using high-temperature aerobic microorganisms and solid-liquid separation and concentration, decomposable decomposable organic substances to decompose high-concentration organic wastewater sludge treatment It is an object of the present invention to provide an apparatus and method for sludge-sludged wastewater.

Another object of the present invention is to provide an apparatus and method for sludge-concentrating organic wastewater, which can reduce sludge treatment of high-concentration organic wastewater and at the same time reduce the treatment cost of high-concentration organic wastewater.

In addition, another object of the present invention is the sludgeization of high concentration organic wastewater, which is capable of decomposing highly decomposable high concentration organic wastewater by irradiating light (light) with the Fenton reaction of some non-degradable high concentration organic wastewater not decomposed in an ATAD tank. An apparatus and method are provided.

In order to achieve the above object, the present invention is a high-concentration organic wastewater treatment apparatus for decomposing and reducing high-concentration organic wastewater, comprising: a concentrating facility for concentrating the solids content in the high-concentration organic wastewater in the incoming high-concentration wastewater to a reference solids content; A filter and the filter for separating and concentrating a solid-liquid organic wastewater decomposed by the high-temperature aerobic digester decomposed by using the high-concentration organic wastewater having a reference solid content introduced from the concentrating plant as the food for the microbial agent and the solid-liquid separation and concentration. A portion of the concentrated high concentration organic wastewater introduced from the Fenton reaction and at the same time irradiates light (light) to decompose the hardly decomposable high concentration organic wastewater, and then transfers it back to the high temperature aerobic digestion tank and the high concentration organic wastewater. Disassemble It characterized in that it comprises a microcomputer for controlling the overall operation of reducing.

Preferably, the microbial agent is Bacillus stearothermophilus as a high temperature aerobic microorganism.

Preferably, the high temperature aerobic digester has a temperature, pH (index indicating hydrogen ion concentration), Oxidation-Reduction Potential (ORP), Dissolved Oxygen (DO), Total Suspended Solids (TSS) It further comprises a sensor for measuring, characterized in that configured to be controlled to the optimum conditions of microbial growth from the microcomputer according to the result value measured by the sensor.

Preferably, the filter is characterized in that the ceramic membrane or tubular ultrafiltration membrane which is economical low exchange rate of the membrane, maintains a stable processing capacity even under overload, and prevents membrane contamination and decomposition of the membrane by microorganisms and bacteria.

Preferably, the optical fenton reaction tank uses a fenton oxidation method using a bivalent catalyst which receives some concentrated high concentration organic wastewater from the filter which is not returned to the high temperature aerobic digestion tank under the control of a microcomputer and is not sent to the aeration tank. At the same time, it is characterized in that it is configured to decompose the hardly decomposable organic matter by irradiation with light (light) and to return it to the high temperature aerobic digester.

Preferably, the microcomputer determines the high concentration organic wastewater concentrated by the filter to determine whether the solids content in the high temperature aerobic digestion tank is higher than or equal to the predetermined reference content, and if the high concentration organic wastewater is higher than the reference content, And controlling to transfer the concentrated high concentration organic wastewater to the high temperature aerobic digester if the solids content in the measured high temperature aerobic digester is not more than the reference content.

Preferably, the microcomputer controls the return of the concentrated high concentration organic wastewater to the high temperature aerobic digester when the photophentone oxidation process is performed by the photophenton reactor even if the solids content in the high temperature aerobic digester is higher than or equal to a predetermined reference content. It features.

In addition, the present invention for achieving the above object, in the high concentration organic wastewater treatment method for decomposing and reducing the high concentration organic wastewater of the high concentration wastewater, the concentration of the solids content in the high concentration organic wastewater in the high concentration organic wastewater to be concentrated to a reference solids content After the high temperature aerobic digestion (ATAD) is used to feed the microorganisms, the high concentration organic wastewater is decomposed and the concentrated hardly decomposed high organic wastewater obtained by filtering the decomposed high concentration organic wastewater is subjected to Fenton reaction. And simultaneously decomposing the highly decomposable high concentration organic wastewater by the photo-Fenton reaction irradiating light (light), and then returning to the step of decomposing the high concentration organic wastewater by the high temperature aerobic method and repeating the above process. It features.

Preferably, the process of decomposing the high concentration organic wastewater by using the microbial feed may include measuring a concentration of solids content in the concentrated high concentration organic wastewater and determining whether the measured solids concentration matches the reference solids concentration, and determining the determination. If the results are consistent, the high temperature aerobic digestion method (ATAD) is used to decompose the high concentration organic wastewater by the microorganism in the optimal growth state and the high concentration wastewater in the high concentration wastewater containing the decomposed high concentration organic wastewater is present. The waste high concentration wastewater is characterized by comprising the step of treating by the waste high concentration wastewater treatment process.

Preferably, the step of decomposing the high concentration organic wastewater by the microorganism of the optimum growth state using the high temperature aerobic digestion (ATAD) is temperature, pH (index indicating hydrogen ion concentration), redox potential (ORP: Oxidation- Reduction Potential, Dissolved Oxygen (DO) and Total Suspended Solids (TSS) are measured, and the optimum conditions for microbial growth are adjusted according to the results measured by the sensor. Characterized in that it further comprises the step of using the food of the microbial agent.

Preferably, the decomposition of the hardly decomposable high concentration organic wastewater by the photo-Fenton reaction is not returned to perform the high temperature aerobic digestion mode, and some concentrated high concentration organic wastewater that is not sent to the aeration tank is fenton using a bivalent catalyst. At the same time using the oxidation method, it is characterized by decomposing hardly decomposable organic substances by irradiation with light (light).

Preferably, the concentrated hardly decomposed high concentration organic wastewater obtained by filtering the decomposed high concentration organic wastewater is characterized in that the photophentone oxidation process is performed according to a comparison result of the solid content and the reference content in the means for performing the high temperature aerobic digestion. It is done.

Preferably, if the solids content in the means for performing the high temperature aerobic digestion method is more than the predetermined reference content, if the reference content is more than the standard content, the concentrated high concentration organic wastewater is transferred to the photofenton reaction tank to perform the photophentone oxidation process When the solids content in the means for performing the high temperature aerobic digestion is not more than a predetermined reference content, the concentrated hardly decomposable high concentration organic wastewater obtained by filtering is characterized in that the high temperature aerobic digestion is treated.

Preferably, even if the content of the solids in the means for performing the high temperature aerobic digestion method is higher than a predetermined reference content, the high concentration organic wastewater is treated by the high temperature aerobic digestion method while the photophentone oxidation process is being performed.

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

It should be noted that in the following description, only parts necessary for understanding the operation and operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to distract from the gist of the present invention.

In addition, in the following description, specific details of the apparatus and method for sludge-sludged high concentration organic wastewater of the present invention are shown to provide a more general understanding of the present invention. It will be apparent to one of ordinary skill in the art that the present invention may be readily practiced without these specific details and also by their modifications.

In the following description, input / output between functional blocks constituting the sludge-sludge-forming apparatus of high concentration organic wastewater is high concentration wastewater of high concentration organic and inorganic wastewater, but since inorganic wastewater of high concentration wastewater is difficult to decompose, decomposition of degradable organic wastewater In order to focus on, the organic input between the high concentration organic wastewater is described so as to allow organic coupling between functional blocks, but it should be recognized that this is a high concentration wastewater including a high concentration inorganic wastewater.

On the other hand, the apparatus and method for sludge-concentration of high concentration organic wastewater of the present invention is to decompose organic matter that can be biologically decomposed by high temperature aerobic microorganisms in an ATAD tank, and to filter and decompose the high concentration wastewater in a filter to solid-liquid separation and concentration, Decomposition of the hardly decomposable organic matter by the Fenton oxidation process, the high-concentration organic wastewater decomposed by the photo-Fenton oxidation process can be returned to the ATAD tank to be decomposed again by the microorganisms, so that a high concentration of organic wastewater can be treated Suggest a configuration.

Figure 1 is a block diagram showing the configuration of a sludge-sludgeization apparatus of high concentration organic wastewater according to an embodiment of the present invention. In Figure 1, the operation and operation of the essential components of the present invention can be distracted, the valves for controlling the input and output path between each functional block, a pump and a sensor provided in each functional block (temperature, pH, ORP, DO It is to be noted that the illustration of the TSS is not shown. However, the pump and the sensor will be described when an organic operation description between the functional blocks of the present invention is required.

Referring to FIG. 1, the sludge-sludgeization apparatus of the high concentration organic wastewater of the present invention includes a concentration plant 11, an ATAD tank 13, a filter 15, a photofenton reactor 17, and a microcomputer 19. It is configured by.

The concentration facility 11 concentrates the solids content in the high concentration organic wastewater in the high concentration wastewater (high concentration organic / inorganic wastewater) to be a reference solid content (for example, 4 to 5%). This is to reduce the high concentration organic wastewater by promoting the decomposition of organic matter by the microorganism of the ATAD tank 13 provided at the rear end.

The ATAD tank 13 decomposes the highly concentrated organic wastewater whose solids content is 4 to 5% by the concentration facility 11 by a biological treatment method. In addition, since the microorganism is injected into the ATAD tank 13, organic matter is decomposed by the microorganism. Here, the microbial agent may be a Bacillus stearothermophilus microorganism. Here, Bacillus stearothermophilus is an aerobic microorganism, and a detailed description thereof will be omitted. At this time, since the microorganisms exothermic while ingesting organic matter and oxygen, heat of decomposition is generated according to organic matter decomposition. As a result, the ATAD bath 13 rises to a predetermined temperature (for example, 50 to 70 ° C.) without an external heat source, and is thermally treated to minimize the loss of the heat to the outside. Thus, the ATAD bath 13 proceeds much faster than conventional anaerobic digestion because the microorganisms decompose high concentration organic wastewater under high temperature aerobic conditions, and also increases treatment efficiency. In addition, the ATAD tank 13 is a temperature, pH (index indicating the hydrogen ion concentration), ORP (Oxidation-Reduction Potential; redox potential), DO (Dissolved Oxygen; dissolved oxygen), TSS (Total Suspended Solids total suspended solids) It is equipped with a nebulizer to remove bubbles generated due to sensors and aeration for measuring. Thus, the ATAD bath 13 is controlled to the optimum conditions of microbial growth in accordance with the result measured by the sensors under the control of the microcomputer 19. In addition, the ATAD tank 13 transfers the decomposed high concentration organic wastewater to the filter 15, and the waste high concentration wastewater that is no longer decomposed is treated in a dehydrator. After the dehydrator, the technique of treating waste high concentration wastewater is generally known by those skilled in the art, and thus a detailed description thereof will be omitted. In addition, the ATAD tank 13 receives a part of the concentrated organic wastewater concentrated from the filter 15 so that the organic matter can be decomposed by the microorganism. In addition, the ATAD tank 13 receives the biologically degradable organic wastewater from the light penton reaction tank 17 and reuses it as microbial food to reduce the high concentration organic wastewater.

The filter 15 filters the decomposed high concentration organic wastewater output from the ATAD tank 13 to solid-liquid separation and concentration, thereby reducing the volume of the high concentration organic wastewater. In addition, the filter 15 returns the concentrated organic wastewater concentrated under the control of the microcomputer 19 to the ATAD vessel 13 according to the solids content in the ATAD tank 13. Some of the remaining (about 10%) high concentration organic wastewater is transferred to the Photofenton reactor 17, and the filtered water is transferred to the aeration tank. Here, under the control of the microcomputer 19, the filter 15 transfers the concentrated organic wastewater to the Fenton reaction tank 17 when the solids content in the ATAD tank 13 is equal to or higher than the reference content. However, even if the solid content in the ATAD bath 13 is greater than or equal to the reference content, the photophentone oxidation process is being performed in the optical penton reaction tank 17 or the solid content in the ATAD bath 13 is not greater than or equal to the standard content. It transfers the concentrated high concentration organic wastewater to the ATAD tank 13. This filter 15 is composed of an inorganic membrane. Here, the filter 15 is not sensitive to temperature and pH even if the high temperature and high concentration organic wastewater output from the ATAD tank 13 is introduced into the membrane, and has a long lifespan, excellent chemical resistance, and excellent membrane performance by chemical cleaning. Specific inorganic membranes are used that are easy to recover, have low frequency of membrane exchange and are capable of preventing contamination of microorganisms and bacteria. Thus, in the present invention, it is preferable to use a ceramic membrane as the filter 15. In addition, in the case of the filter 15 composed of the ceramic membrane, the exchange frequency of the membrane is low, economical, and maintains a stable processing capacity even under overload, it is possible to prevent membrane contamination and decomposition of the membrane by microorganisms and bacteria. Detailed description of the filter 15 will be described later.

The Fenton reaction tank 17 decomposes the hardly decomposable organic matter by using the Fenton oxidation method for the concentrated high concentration organic wastewater which is not returned from the filter 15 to the ATAD tank 13 and is not transferred to the aeration tank. After irradiating light (light) to decompose the hardly decomposable organic matter, it is returned to the ATAD bath 13. The Fenton oxidation method of the optical Fenton reaction tank 17 and the light Fenton oxidation method for decomposing hardly decomposable organic substances by irradiating light to the optical Fenton reaction tank will be described later in detail. In addition, the optical penton reactor 17 is provided with a sensor for sensing the temperature, pH, ORP. Thus, the optical penton reaction tank 17 is controlled under the control of the microcomputer 19 to an optimum condition in which the hardly decomposable organic wastewater can be sufficiently decomposed according to the result measured by the sensors.

The microcomputer 19 controls the overall operation of the high concentration organic wastewater treatment apparatus for decomposing and reducing the high concentration organic wastewater. In addition, the microcomputer 19 controls the ATAD tank 13 to operate under optimum conditions of microbial growth according to the measurement result of the sensors provided in the ATAD tank 13. In addition, the microcomputer 19 controls the optical penton reaction tank 17 to operate under optimum conditions in which the hardly decomposable organic wastewater can be sufficiently decomposed according to the measurement results of the sensors provided in the optical penton reaction tank 17. . In addition, the microcomputer 19 measures the solids content of the high concentration organic wastewater concentrated by the filter 15, and also measures the solids content in the ATAD bath 13 to determine whether or not it is equal to or greater than the predetermined reference content. In this case, the concentrated high concentration organic wastewater is transferred to the photofenton reaction tank 17 to perform the photofenton oxidation process, and when the photofenton oxidation process is performed, the concentrated high concentration organic wastewater is returned to the ATAD tank 13. Controlled to be degraded again by the high temperature aerobic microorganisms. Further, if the measured solid content in the ATAD bath 13 is not more than the reference content, the microcomputer 19 may concentrate the concentrated organic wastewater concentrated to maintain the solid content in the ATAD bath 13 or more. Return to ATAD tank 13 for processing. In addition, the microcomputer 19 controls to transfer the concentrated high concentration organic wastewater to the ATAD tank 13 while the photophentone oxidation process is being performed in the optical penton reaction tank 17. The microcomputer 19 also controls the filtrate filtered by the filter 15 to be transferred to the aeration tank.

Referring to FIG. 1, the operation of the sludge-densing apparatus of the high concentration organic wastewater for reducing the high concentration organic wastewater is as follows.

First, when the high concentration organic wastewater flows in, the concentration facility 11 concentrates the solids content in the high concentration organic wastewater to 4 to 5% and transfers it to the ATAD tank 13.

Then, the ATAD bath 13 is controlled by the microcomputer 19 to the optimum conditions of microbial growth according to the measurement result of the sensors provided in the ATAD bath 13. That is, the operation of the microcomputer 19 to control through the measured values of the sensors provided in the ATAD tank 13 will be described as follows.

The microcomputer 19 controls the temperature value measured by the temperature sensor to be maintained at an appropriate reference temperature for microbial growth, that is, 50 ~ 70 ℃.

The microcomputer 19 also controls to inject sodium hydroxide chemicals into the ATAD bath 13 when the pH measured by the pH sensor is lower than an appropriate reference pH value for microbial growth. Thus, the microcomputer 19 operates the pump so that sodium hydroxide can be injected into the ATAD bath 13.

However, the microcomputer 19 controls to inject sulfuric acid chemical into the ATAD bath 13 when the pH sensor measurement value measured by the pH sensor is higher than the reference pH value. Thus, the microcomputer 19 operates the pump so that sulfuric acid can be injected into the ATAD tank 13.

In addition, the microcomputer 19 determines the oxygen utilization rate of the microorganism by the ORP sensor to control the oxygen supply amount inside the ATAD tank 13 through the oxygen supply device.

In addition, the microcomputer 19 controls the dissolved oxygen concentration by the DO sensor to maintain a concentration suitable for the growth of microorganisms in the ATAD tank (13). The reason why the appropriate oxygen supply by the ORP sensor and DO sensor is as follows.

That is, an increase in energy consumption and loss of high concentration organic wastewater decomposition heat may occur during overaeration, and problems such as a decrease in decomposition rate and degradation rate of high concentration organic wastewater may occur due to inhibition of growth of microorganisms during low aeration. Thus, supplying an appropriate concentration of oxygen is essential.

On the other hand, since the concentration of saturated dissolved oxygen (about 4.3 mg / L at 70 ° C.) is low at high temperatures, the degree of decomposition of the high concentration organic wastewater is determined by the oxygen injection method and the method of increasing the oxygen utilization rate.

According to the results, the optimum oxygen concentration in water is reported to be 1 mg / L. To this end, a high concentration of organic wastewater is circulated using a circulation pump by a jet aeration method, and air is supplied to the circulation pipe using an air supply device to smoothly flow through the diffuser provided inside the ATAD tank 13. (13) It is configured to supply oxygen inside. In addition, since the ATAD tank 13 generates a large amount of bubbles due to aeration under the control of the microcomputer 19, the ATAD tank 13 is provided on the water surface in the ATAD tank 13 while circulating a high concentration of organic wastewater using a defoaming pump. Use a nebulizer to remove bubbles from the surface of the water. However, even when a large amount of bubbles are generated, the microcomputer 19 is transferred to the light penton reaction tank 17 when the bubbles are not removed even when using the sprayer.

The microcomputer 19 also controls the total suspended solids content in the ATAD bath 13 by a TSS sensor to maintain a concentration suitable for the growth of high temperature aerobic microorganisms.

The ATAD bath 13 transfers the high concentration organic wastewater decomposed by the biological treatment method to the filter 15. The filter 15 then solid-liquid separates and concentrates the high concentration organic wastewater decomposed from the ATAD bath 13. Thereafter, the microcomputer 19 measures the solids content of the high concentration organic wastewater concentrated by the filter 15, and also measures the solids content in the ATAD bath 13 to determine whether it is equal to or greater than the preset reference content. If it is above, it controls so that the concentrated high concentration organic wastewater may be sent to the photofenton reaction tank 17. The microcomputer 19 converts a part of the high concentration organic wastewater into the ATAD tank 13 while the photofenton oxidation process is being performed by the photofenton reaction tank 17 even if the solid content of the high concentration organic wastewater is higher than the reference content. And the filtrate is controlled to be sent to the aeration tank.

The filter 15 is provided with a pressure gauge at the front and the rear end, when the contamination of the membrane occurs through the pressure gauge, the membrane pores are blocked, the pressure scale of the pressure gauge of the inlet is increased, and the scale of the pressure gauge of the outlet is relatively lowered. . If the scale of the pressure gauge of the inlet part is equal to or greater than the reference pressure, backwashing is performed using a compressed air supply device and a regenerative medicine under the control of a microcomputer. When the operation of this high concentration organic wastewater treatment apparatus is performed after backwashing, if the pressure change measured by the pressure gauge before backwashing and after backwashing is insignificant, the filter 15 is replaced.

Thereafter, the light penton reactor 17 receives a portion of the concentrated organic wastewater concentrated from the filter 15 and mixes the concentrated organic wastewater introduced by using a motor and an agitator. The optical penton reactor 17 is decomposed by the photophentone oxidation method under the control of the microcomputer 19 through sensors provided in the optical penton reactor 17 to decompose the hardly decomposable organic matter, and then to ATAD. It returns to the tank 13. Fenton oxidation method has high activity because it generates hydroxide radical through rapid reaction of divalent iron and hydrogen peroxide by adjusting to pH 3 ~ 4, but once ferric iron is used as catalyst, it is oxidized to trivalent iron through Fenton reaction. Because it is lost, light (light) is irradiated to continuously regenerate trivalent ions into bivalent iron. Therefore, the amount of sludge produced by iron salt as well as the amount of iron salt is greatly reduced, thereby maintaining the activity of the Fenton reaction. The optical penton reactor 17 is operated by the control of the microcomputer 19 when the water level measured using the level switch becomes a certain amount or more. The hardly decomposable organic wastewater decomposed after the reaction in the photofenton reactor 17 is returned to the ATAD tank 13 to repeat the above-described process to reduce the high concentration organic wastewater.

2 is a flow chart showing a sludge-sludgeization method of high concentration organic wastewater according to an embodiment of the present invention.

Referring to FIG. 2, in step 201, the microcomputer 19 increases the solids content in the high concentration organic wastewater flowing into the concentration facility 11. For example, the microcomputer 19 is concentrated so that the solid content is 4-5%.

Thereafter, in step 203, the microcomputer 19 measures the concentration of solids content in the high concentration organic wastewater concentrated by the concentration facility (11).

In step 205, the microcomputer 19 determines whether the measured solid concentration is consistent with the reference solid concentration.

If the determined solids concentration does not match the reference solids concentration, the microcomputer 19 returns to step 201 and repeats the above-described process until the measured solids concentration matches the reference solids concentration.

However, if the measured solids concentration is consistent with the reference solids concentration, the microcomputer 19 decomposes the high concentration organic wastewater by the microorganism in the optimal growth state by using a high temperature aerobic digestion method (ATAD) in step 207. do.

Thereafter, in step 209, the microcomputer 19 determines whether the high concentration wastewater is present in the high concentration wastewater including the decomposed high concentration organic wastewater.

Thus, if the waste high concentration wastewater is present, the microcomputer 19 performs the waste high concentration wastewater treatment process in step 211. Here, the waste high concentration wastewater treatment process is a generally known technique, and thus a detailed description thereof will be omitted.

However, when the wastewater is not a high concentration wastewater in the high concentration wastewater, the microcomputer 19 filters the high concentration organic wastewater decomposed through the filter 15 in step 213 to separate and concentrate the solid solution. Thus, the filtered water filtered by the filter 15 is transferred to aeration tank.

Next, in step 215, the microcomputer 19 measures the solids content of the high concentration organic wastewater in the ATAD bath 13.

In step 217, the microcomputer 19 determines whether the measured solid content in the ATAD bath 13 is equal to or greater than the reference content.

As a result of the determination, if the solids content in the ATAD tank 13 is greater than or equal to the reference content, the microcomputer 19 proceeds to step 219 to perform the light pentone oxidation process.

However, if the solid content in the ATAD tank 13 is not equal to or greater than the reference content, the measurement returns to step 207.

In step 219, the microcomputer 19 uses the Fenton oxidation method and at the same time the light (light) is continuously irradiated with light (light) on the ferric iron used as a catalyst to decompose the concentrated high-concentration organic wastewater, and then the high-decomposable high concentration is difficult to decompose. Decompose organic wastewater. Thus, by irradiating with light so as not to oxidize to trivalent iron and lose its activity by the Fenton reaction, trivalent ions are continuously regenerated into divalent iron to reduce chemical consumption. Thereafter, the process returns to step 207 described above to repeat the process.

On the other hand, as a result of the determination in step 217, while the solids content in the ATAD tank 13 is higher than the reference content, while the high concentration organic wastewater is applied to the photophentone oxidation method, step 219 described above is not performed. Return to the step to allow the decomposition of high concentration organic wastewater.

As described in detail above, the present invention can reduce the cost of treating high concentration organic wastewater per ton, and the source treatment concept of directly reducing the generation of high concentration organic wastewater itself, rather than the post-treatment technique of carrying out the processing of the generated high concentration organic wastewater to the outside of the process. Because of its high concentration of organic wastewater treatment technology, it is possible to cope with future marine dumping measures.

In addition, it is possible to prevent secondary environmental pollution caused by incineration, which is one of the methods of treating high concentration organic wastewater, and to be hygienic due to the killing of pathogens due to high temperature treatment, and to reduce the cost of dehydration, the installation cost of dehydration equipment, and the installation site. .

In addition, since a portion of the high concentration organic wastewater separated through the filter is transferred to the light penton process, the drug consumption is reduced, thereby reducing the drug cost.

Claims (14)

In the high concentration organic wastewater treatment apparatus for decomposing and reducing the high concentration organic wastewater, A concentrating facility for concentrating the solids content in the high concentration organic wastewater to the reference solids content High temperature aerobic digestion tank that decomposes by using high concentration organic wastewater of the standard solids content flowing from the concentration facility as a food for Bacillus stearothermophilus, a high-temperature aerobic microorganism; A filter for separating and concentrating solid liquid by filtering high concentration organic wastewater decomposed by the high temperature aerobic digester; And a Fenton reaction tank for decomposing hardly decomposable high concentration organic wastewater by irradiating light (light) with a portion of the concentrated high concentration organic wastewater introduced from the filter, and then transporting it back to the high temperature aerobic digester; The high concentration organic wastewater concentrated by the filter is judged whether the solids content in the high temperature aerobic digestion tank is equal to or greater than the predetermined reference content, and when the content is higher than the reference content, the concentrated organic wastewater concentrated by the filter is controlled to be transferred to the photofenton reaction tank. And a microcomputer for controlling the return of the concentrated organic wastewater to the high temperature aerobic digester if the solids content in the measured high temperature aerobic digester is not more than the reference content. delete According to claim 1, The high temperature aerobic digester, It further includes sensors for measuring temperature, pH (index of hydrogen ion concentration), Oxidation-Reduction Potential (ORP), Dissolved Oxygen (DO), and Total Suspended Solids (TSS). And a microcomputer configured to control microbial growth conditions according to the result measured by the sensor. According to claim 1, The filter, An apparatus for sludge-concentrating highly concentrated organic wastewater, which is economical due to low exchange rate of membranes, maintains stable processing capacity even under overload, and is a ceramic membrane or a tubular ultrafiltration membrane which prevents membrane contamination and membrane decomposition by microorganisms and bacteria. According to claim 1, The photophenton reaction tank, Under the control of the microcomputer, some concentrated high concentration organic wastewater which is not returned to the high temperature aerobic digester and not to the aeration tank is input from the filter and irradiates light (light) while using the Fenton oxidation method using a bivalent catalyst. Desulfurization apparatus of high concentration organic wastewater, characterized in that for decomposing the hardly decomposable organic matter and transporting it back to the high temperature aerobic digester. delete According to claim 1, The microcomputer, Even if the solids content in the high temperature aerobic digestion tank is higher than the predetermined reference content, when the photophentone oxidation process is performed by the photophenton reaction tank, the concentrated high concentration organic wastewater is controlled to be returned to the high temperature aerobic digestion tank. Sludgeizer. In the high concentration organic wastewater treatment method of decomposing and reducing the high concentration organic wastewater of the high concentration wastewater, Concentrate the content of solids in the high concentration organic wastewater to the standard solids content, and then decompose the high concentration organic wastewater by using Bacillus stearothermophilus, a high-temperature aerobic microorganism, by using high temperature aerobic digestion (ATAD). After decomposing the hardly decomposable high concentration organic wastewater by the Fenton reaction which simultaneously irradiates light (light) with the concentrated hardly decomposable high concentration organic wastewater obtained by filtering the decomposed high concentration organic wastewater, and then in the high temperature aerobic method. Returning to the process of decomposing high concentration organic wastewater, the method of sludgeization of high concentration organic wastewater comprising the step of repeating the process. The method of claim 8, The process of decomposing high concentration organic wastewater using the food of the microorganism, Measuring the concentration of solids in the concentrated organic wastewater; Determining whether the measured solids concentration is consistent with the reference solids concentration, and if the determination result is consistent, decomposing the high concentration organic wastewater by the microorganism using a high temperature aerobic digestion (ATAD) and When waste high concentration wastewater is present in the high concentration wastewater including the decomposed high concentration organic wastewater, the waste high concentration wastewater is treated by waste high concentration wastewater treatment. . The method of claim 9, Decomposing high concentration organic wastewater by the microorganism using the high temperature aerobic digestion method (ATAD), Measuring temperature, pH (index of hydrogen ion concentration), Oxidation-Reduction Potential (ORP), Dissolved Oxygen (DO), and Total Suspended Solids (TSS); And adjusting the growth conditions of the microorganisms according to the result measured by the sensor to use the high concentration organic wastewater as the food for the microorganisms. The method of claim 8, Degrading the hardly decomposable high concentration organic wastewater by the photofenton reaction, Some concentrated high-concentration organic wastewater that is not returned to perform the high temperature aerobic digestion method and is not sent to the aeration tank is used to decompose the hardly decomposable organic material by irradiating light (light) simultaneously with the Fenton oxidation method using a bivalent catalyst. A method for sludgeization of high concentration organic wastewater, characterized in that. The method of claim 8, The concentrated hardly decomposable high concentration organic wastewater obtained by filtering the decomposed high concentration organic wastewater is A method for sludgeization of highly concentrated organic wastewater, characterized in that the photofenton oxidation process is performed according to a comparison result of the solid content and the reference content in the means for performing the high temperature aerobic digestion. The method of claim 12, Determining whether the solid content in the means for performing the high temperature aerobic digestion method is greater than or equal to the predetermined reference content, if the content is above the reference content, the concentrated high-concentration organic wastewater is transferred to the optical Fenton reaction tank to perform the optical fenton oxidation process, If the solids content in the means for performing the high temperature aerobic digestion method is not more than a predetermined reference content, sludgeization of the high concentration organic wastewater, characterized in that the concentrated hardly decomposed high concentration organic wastewater obtained by filtering by the high temperature aerobic digestion method Way. The method of claim 13, Sludge of high concentration organic wastewater, characterized in that the high concentration of organic wastewater is treated by high temperature aerobic digestion while the photofenton oxidation process is performed even if the solids content in the means for performing the high temperature aerobic digestion method is higher than or equal to a predetermined reference content. How to get angry.

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