KR20020038881A - The Advanced Treatment of Sewage and Wastewater make use of Bio-Sorption Micro-Filtered is based upon Sequencing Batch Reactor - Google Patents

Abstract

PURPOSE: A waste water disposal apparatus according to an ash content reactor using microorganism bio-sorption media and a filtering module is provided to biologically remove organic matter contained in waste water to effectively process organic contamination materials. CONSTITUTION: At least one biological reaction tank(160) is installed. In the reaction tank, contaminated organic materials are oxidized and decomposed using congregation of microorganism. A filtering module(400) is connected with a press-in pump through an exhaust pipe. The filtering module processes the sludge generated when the contaminated materials are decomposed into ideal water. Pressed air is blown into the filtering module to clean the filtering module.

Description

The Advanced Treatment of Sewage and Wastewater make use of Bio-Sorption Micro-Filtered is based upon Sequencing Batch Reactor}

The present invention biologically removes organic matter contained in domestic wastewater, industrial wastewater, and livestock wastewater (hereinafter, referred to simply as "wastewater") by a batch reaction tank using a fluidized microorganism sorption carrier and a filtration module. The present invention relates to an advanced treatment system for wastewater and wastewater, and particularly to microorganisms capable of highly removing organic, inorganic, nitrogen (TN), phosphorus (TP), etc., regardless of the mixing of wastewater. The present invention relates to an advanced treatment system for wastewater by a batch reactor using a sorption carrier and a filtration module.

In general, wastewater contains 10% or more of fatty organic substances and fatty nitrogen components, which are difficult to remove by conventional treatment methods. Especially, dissolved nitrogen in livestock wastewater is also adhered to by maintaining degeneration. Fatty organics are fats that are not absorbed by the body from polymer fats (C ₁₀ ) and are released together with fatty acids reduced by fat metabolism to form viscous interfaces in manure, and fatty nitrogen is contained in the vegetable protein about 19% As nitrogen, it is composed of light protein, lipoprotein, denatured protein, etc., and constitutes a living tissue, and nitrogen in surplus protein becomes ammonia by nitrogen metabolism and is discharged to urea by urea cycle. As the protein is decayed, the amino acid is deaminoated by the basic amino group (NH₂) and the acidic carboxyl (COON) to become basic or acidic ammonia (NH ₄ ⁺ + H ₂ O NH₃ + OH ^-) nitrogen is not decomposed by the metabolism of nitrogen and protein decay forms an interface between a dissolved nitrogen-containing compound is maintained. Organic matter and dissolved nitrogen, which form a malleable interface by oil and fat components, are not dissolved in water or a solvent, and are difficult to digest or degrade as enzyme microorganisms.

When decomposing organic matter in wastewater into microorganisms, how to efficiently flow carriers to which microorganisms adhere was a very important problem.

For example, due to the hydrophobicity of the sponge-like carrier, it is not mixed with the microorganism reactor as it is and remains floating on the surface of the water, and the period until the microorganisms adhere is not settled and rotated. Also, for example, even if the bubble is removed and put into the water, the aeration reaction tank is abandoned to operate, so that the bubble adheres to the bogie carrier and the carrier floats on the surface, so that the carrier does not flow in the state of floating on the surface. There is a problem that rotation does not occur.

As a result, the above problems increase BOD in treated water, increase suspended solids, and cause environmental pollution. Also, nitrogen (N) or phosphorus (P), which is an environmental pollutant, is released into treated water, causing eutrophication. There is a tendency to occupy a large area of the site, there is a problem that increases the cost of facilities and operation management.

Accordingly, an object of the present invention is to solve the above-mentioned shortcomings, and to remove organic substances contained in the wastewater by biologically removing the organic contaminants by the batch reactor of the fluidized-bed bio-sorption media. Treatment of wastewater and wastewater by ash reactor using microbial sorbent carrier and filtration module, which makes it possible to backwash the inside of filtration module and reduce the cost of construction and operation management of treatment plant. To provide a device.

In order to achieve the above object, the wastewater advanced treatment apparatus by the ash reactor using the microorganism sorption carrier and the filtration module of the present invention is introduced in the apparatus to treat the wastewater associated with the invention of claim 1, A flow rate adjusting tank provided with a screen for firstly filtering the solids of the wastewater and an acid pipe for imparting pressurized air to the wastewater filtered by the screen to prevent sedimentation of the solids; The unprocessed small-sized material in the sewage and wastewater introduced into the flow regulating tank is formed continuously and accumulated at the bottom. Secondly, the suspended solids in the sewage and wastewater flowing from the flow regulating tank are treated secondly. A sludge thickening tank equipped with a second screen having a fine scale to make it; A plurality of microbial sorption carriers which are formed in a continuous section of the sludge thickening tank and are arranged to be flowable for sorption treatment of the organic matter of the secondary filtered treated wastewater which is quantitatively introduced, and fixedly disposed at a position adjacent to the microbial sorption carriers And filter the untreated organic matter, and the upper and lower filtration module is installed in contact with the pressurized air supply means and the discharge means, respectively, and the pressurized air for floating the solid matter disposed under the microorganism sorption carrier and the filtration module A batch reaction tank provided therein with a second acid engine; It is characterized in that it comprises a treatment tank which is formed continuously in the batch reaction tank and finally disinfects and discharges the filtered treatment water sucked from the batch reaction tank and introduced.

The microorganism sorption carrier is preferably formed of a solid material of 4 ~ 6mm size with a synthetic material of polyurethane, vinyl chloride, ethylene and propylene.

In addition, the filtration module body is made of a cylindrical mesh made of stainless steel, both ends of the outer filter barrel closed with a plate body formed with holes in contact with the pressurized air supply means and the discharge means; It is installed inside the outer filter barrel, the body portion is made of a cylindrical filter material of ceramic material, one end of the opening is completely closed while the other opening is in contact with the pressurized air supply means through the hole of the closing plate body It is preferable that the inner filter can be finished with a plate body having an inlet.

In addition, the filter network of the outer filter cylinder is a structure in which at least three or more meshes are stacked, it is preferable to have a smaller mesh scale from the outer network to the inner network.

In addition, preferably, the pressurized air supply means uses a blower for generating air having a predetermined pressure, and the discharge means uses a pump.

In addition, in order to prevent the microbial sorbent carrier from leaking to the inner bottom of the reaction tank, it is preferable to install an outflow prevention plate having holes having a diameter smaller than the size of the microbial sorbent carrier.

In addition, it is preferable to install flow rate meters to maintain the quantitative amount of the wastewater introduced into the flow rate adjustment tank, the sludge concentration tank and the ash reaction tank.

The present invention makes it possible to reduce costs related to the construction and operation management of the treatment plant having the above configuration, and to effectively treat organic pollutants to solid-separate the mixed liquor to make clean treated water.

1 is a schematic diagram of an advanced treatment system for wastewater by a batch reactor using a microbial sorption carrier and a filtration module according to the present invention,

Figure 2a to 2e is a view showing the treatment of wastewater by microbial sorbent carrier and filtration module in a batch reactor,

Figure 3 is a perspective view showing the appearance of the microorganism sorption carrier used in the ash reactor of the advanced wastewater treatment system according to the present invention,

4 is a longitudinal cross-sectional view taken along line I-I of the filtration module shown in FIG. 1,

5 is a cross-sectional view taken along the line II-II of FIG. 4,

FIG. 6 is a partially enlarged plan view of the microbial sorbent carrier shown in FIG.

FIG. 7 is a cross-sectional view taken along line IV-IV of FIG. 6.

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

100: ash reactor waste water treatment device 120: flow rate adjustment tank

126,166,168,186: 1st, 2nd, 3rd, 4th flow meter

127,167: 1st, 2nd blower

140: sludge thickening tank 142: fine screen

160: batch reactor 161: circulation valve

165: sludge feed valve 180: treated water tank

183: defoaming water supply valve 184: treated water discharge valve

200: microorganism sorption carrier 300: prevention plate

400: filtration module P1 to P3: first to third pump

Hereinafter, with reference to the accompanying drawings will be described in detail a more preferred embodiment of the wastewater advanced treatment apparatus by the ash reactor using the microorganism sorption carrier and the filtration module according to the present invention.

1 is a schematic diagram of an advanced treatment apparatus for wastewater by a batch reactor using a microbial sorption carrier and a filtration module.

As shown in the drawing, when the wastewater treatment apparatus 100 according to the present invention is roughly divided into a flow rate adjustment tank 120, a sludge concentration tank 140, a ash reactor 160, a treatment water tank 180, and formed into a predetermined size, and It is composed of a disinfection tank 190.

One inlet of the flow adjustment tank 120 is provided with an inlet port 128 for introducing wastewater from the outside. The wastewater flowing into the flow regulating tank 120 through the inlet 128 passes through the screen plate 122 installed in the compartment 125 formed at a position adjacent to the wastewater inlet 128. By so doing, the solids contained in the wastewater are first filtered. The screen plate 122 allows the solids of at least 5 mm or more of the solids contained in the wastewater to be filtered. In addition, a first acid pipe 124 for supplying air to the wastewater is provided at the inner bottom of the flow regulating tank 120. The first acid pipe 124 is provided with a general blower 127 for supplying air. The air supply through the blower 127 is continuously suspended without the solid matter of 5 mm or less contained in the wastewater passing through the screen plate 122 settling in the inner bottom of the flow adjusting tank 120. To achieve state. The wastewater stored in the flow regulating tank 120 is pumped as the first pump P1 mounted on the inner bottom of the flow regulating tank 120 and sent to the rotating screen 142 to remove the solid material of 5 mm or less. After the waste solution is pumped to be contained in the batch reactor 160.

The operation of the first pump P1 is performed by the detection sensor S2 of the third flow level gauge 168 installed in the ash reactor 160. On the contrary, when the flow rate of the wastewater reaches the detection sensor S1 of the second flow level gauge 166, the operation of the first pump P1 is immediately stopped by the control of the first pump P1 by the detection signal at this time. do. Since the configuration in which the first pump P1 is turned on / off by the detection sensors S1 and S2 of the second and third flowmeters 166 and 168 is a general technology in the art, a detailed description thereof will be omitted.

The primary filtered treated wastewater pumped from the first pump (P1) is filtered through the rotary screen 142 installed on the upper side before being introduced into the ash reactor 160 and then introduced. Since the rotating screen 142 itself is a general configuration, a detailed description thereof will be omitted. The rotary screen 142 filters out suspended matter of approximately 5 mm or less in size. Waste water filtered by the rotating screen 142 is introduced into the ash reactor 160, and the suspended solids filtered by the rotating screen 142 are inside the sludge thickening tank 140 as indicated by the arrow. The sedimented concentrated sludge is subsequently processed, and the supernatant water of the sludge thickening tank 140 is introduced again in a state of naturally flowing into the flow adjusting tank 120.

The batch reaction tank 160 treats the introduced wastewater by using a microbial sorption carrier and a filtration module. The wastewater quantitatively introduced by the third pump P3 is introduced into the ash reaction tank 160. A plurality of microbial sorption carriers 200 which are arranged to be flowable to process the microbial sorption carriers and the microorganisms sorption carriers 200 are fixedly disposed at an adjacent position to filter untreated organic matters, and the pressurized air is supplied to the upper and lower ends, respectively. A plurality of filtration modules 400 installed in contact with the second blower 167 as a means and the third pump P3 as the discharge means, and under the microbial sorbent carrier 200 and the filtration module 400. The second acid pipe 164 is disposed to impart pressurized air to float the solids, and a prevention plate for preventing the outflow of the microbial sorbent carrier 200 on the inner bottom of the ash reactor 160 ( 300) It is In the above, the second blower 167 is connected to the filtration module 400 and the second acid pipe 164 in the same manner and is installed to supply necessary air.

The wastewater treatment method in the ash reactor 160 having such a configuration includes the following processes, namely, wastewater introduction process ⇒ aeration process ⇒ sedimentation process ⇒ circulation process ⇒ treated water discharge process. These processes are run as one cycle. Hereinafter, the processes will be described with reference to FIGS. 2A to 2E.

Figure 2a to 2e is a view showing the treatment of wastewater by microbial sorbent carrier and filtration module in a batch reactor.

Wastewater Introduction Process (Fig. 2a)

When the waste liquid which has passed through the rotary screen 142 in the wastewater supplied by the first pump P1 is introduced into the ash reactor 160, the second flow level gauge 166 (see FIG. 1) is supplied. By this, only the quantitative flow into the ash reactor 160 is stored. In addition, the excess sludge generated in the ash reactor 160 is sent to the inside of the sludge thickening tank 140 through the discharge pipe 163 and the sludge transfer valve 165 connected to the second pump (P2), the discharge pipe 163 ) And the sludge delivery through the sludge transfer valve 165 is a general configuration and a detailed description thereof will be omitted.

<Aeration process (Fig. 2b)>

When the first pump (P1) is stopped and the air is supplied to the inside of the ash reactor 160 through the second acid pipe 164 which is the aeration element by the start of the second blower 167, the air at this time is While flowing into the ash reactor 160, the activated sludge and the microorganism preservation microorganism sorption carrier 200 in the fluidized bed are rotated. During the rotation process, that is, during the aeration operation by the acid pipe 164, the wastewater and the microorganisms in the ash reaction tank 160 come into contact with each other to generate an oxidative decomposition reaction by aerobic bacteria, and the organic matter is carbon dioxide (CO₂) and water ( Decomposes into H₂O).

<Sedimentation process (Fig. 2c)>

When the second blower 167 is stopped at the end of the abandon operation, the microorganisms that flowed inside the reactor 160 during the period of the microbial sorbent carrier 200 and the suspended solids (sludge) S are moved downward. The sinking is performed. The suspended solids of the microorganism sorption carrier 200, the microorganism sorption carrier 200 is first settled by the specific gravity difference in the process of sedimentation separation, and the activated sludge floc tends to settle slightly later, so the activated sludge Most of the will be settled on the lower plate 300. At this time, the settled microbial sorption carrier 200 is present in a state as part of the sandwich between the prevention plate (300).

Circulation process (Fig. 2d)

The excess sludge settled in the reservoir at the bottom of the tank to facilitate the active activity of the microorganism sorption carrier 200 and the suspended solids is opened simultaneously with the operation of the second pump P2 to balance the overall effect in the reactor 160. It is transferred to the inside of the reaction tank 160 through the circulation valve 161. Meanwhile, the treated water treated by the microbial sorption carrier 200 is transferred to the inside of the treatment tank 180 and finally discharged through the disinfection tank 190. Operation of the third pump (P3) serves to transfer the wastewater treated by the microorganism sorption carrier 200 into the treatment tank 180 while again filtering through the filtration module 400. The filtration module 400 will be described in detail with reference to FIGS. 4 and 5 to be described later.

The reason why the treated water is obtained by the above method is that the physical filtration function is exerted in the settled microorganism sorption carrier 200. In addition, the residual solubility contained in the treated water in the circulation process. The organic fouling material (organic materials remaining without the oxidative oxidative decomposition in the aeration step) also exhibits the microbial treatment function held in the microorganism sorption carrier 200 at the same time, thereby performing biofiltration treatment. The third pump (P3) when it is detected by the second sensor (S2) of the third flow level gauge 168 that the waste liquid in the reactor 160 is reduced by the operation of the third pump (P3) in the above. While the driving of the motor is stopped, the driving of the first pump P1 is started to start the inflow of waste water (see FIG. 1).

<Process water discharge process (Fig. 2e)>

As the microorganism sorption carrier 200 and the activated sludge settle in the bottom of the ash reactor 160, the third pump P3 for discharge after opening of the treated water discharge valve 184 operates through the filtration module 400. Treated water is discharged over time. At this time, even when the treated water is discharged, the wastewater in the ash reaction tank 160 passes through the sorption carrier 200 for maintaining the microorganisms, so that the excellent treated water is stably produced. Therefore, the wastewater present in the ash reactor 160 produces wastewater continuously by repeating the wastewater introduction process to the treated water discharge process in one cycle.

Wastewater introduction operation and discharge operation by the first to third pumps P1 to P3, air supply operation by the first and second blowers 127 and 167, sludge transfer circulation operation and valves 161, 165, 183 and 184. The opening and closing operation of the) may be controlled by a controller (not shown) so as to be operated at a proper time as a constant cycle, or may be fully automated, or may be automatically operated individually for each operation. Such a configuration is a general technique and can be modified and detailed description thereof will be omitted. Reference numeral 183 denotes a parcel water supply valve, and 186 denotes a fourth flow level gauge.

Figure 3 is a perspective view showing the appearance of the microorganism sorption carrier used in the ash reactor 160 of the wastewater treatment apparatus according to the present invention.

The microorganism sorption carrier 200 is made of a synthetic material of polyurethane, vinyl chloride, ethylene and propylene, preferably formed smaller than the size of the through holes 310 of the prevention plate 300 shown in FIGS. Do. More preferably, it is molded into a solid having a size of 4 to 6 mm. In the present invention, an example of forming a rectangular quadrangular rectangle is shown as an example, but the shape is not particularly limited to any shape. As described above with reference to FIG. 1, the microbial sorption carrier 200 is oxidatively decomposed by aerobic bacteria by contacting microorganisms with wastewater and microorganisms in the ash reaction tank 160 while flowing into the ash reaction tank 160. Induces the decomposition of organic matter into carbon dioxide (CO₂) and water (H₂O).

4 is a longitudinal cross-sectional view taken along line I-I of the filtration module shown in FIG. 1, and FIG. 5 is a cross-sectional view taken along line II-II of FIG. 4.

The filtration module 400 has a cylindrical mesh made of stainless steel, and both ends thereof have holes for contacting a second blower 167 (see FIG. 1), which is a pressurized air supply means, and a third pump (P3), which is a discharge means. The outer filtration tube 410 is provided with the plates 421 and 423 formed with the fields 422 and 424. The filter nets 412 to 416 of the outer filter barrel 410 have a structure in which at least three nets are stacked and have a smaller mesh scale from the outer net 412 to the inner net 416. The reason is to reduce the resistance of the waste water sucked through the network (412 ~ 416). Inside the outer filter barrel 410, the body portion is made of a cylindrical cylindrical filter body 434, one end is closed to be completely closed while the other end is a hole 422 of the closing plate body 421 An inner filter cylinder 430 closed with a plate 436 having an inlet 432 installed in contact with the second blower 167 serving as the pressurized air supply means is installed.

This configuration is to discharge the wastewater treated by the microorganism sorption carrier 200 during the operation of the third pump (P3) to the inside of the treatment tank 180 while filtering again through the filtration module 400, As shown in FIG. 4, the suction force of the third pump P3 is used to filter wastewater in the ash reactor 160 to filter nets 412 to 416 of the outer filter 410. To pass through a wide range, and then to pass through a portion of the inner filtration tube 430 narrowly in order to filter the suspended matter, and then discharged into the interior of the treatment tank 180 through the hole (424) (see Figure 1) .

In the case where a lot of suspended matter is caught in the filter nets 412 to 416 of the outer filter barrel 410 and the inner filter barrel 430 by repetition of the filtration through the filter module 400, the filter module 400 is connected to the filter module 400. When the second blower 167 of FIG. 1 shown in FIG. 1 is operated, floating matters caught in the scale of the outer filter barrel 410 and the inner filter barrel 430 are easily separated by pressurized air supplied in the same direction as the arrow. Can be. While the second blower 167 is operating, the driving of the third pump P3 is stopped.

As shown in FIG. 1, several filtration modules 400 are installed depending on the size of the ash reactor 160, but in the above embodiment, the filtration modules 400 are all the same, and thus only one of them has been described as an example.

FIG. 6 is a partially enlarged plan view showing the plate for preventing the leakage of the microbial sorbent carrier shown in FIG. 1 in the direction of line III-III, and FIG. 7 is a cross-sectional view taken along the line IV-IV of FIG.

At the bottom of the ash reactor 160 (see FIG. 1), a prevention plate 300 is installed to prevent the outflow of the microorganism sorption carrier 200. Outflow prevention plate 300 of the microbial sorbent carrier 200 is formed with holes 310 having a smaller diameter than the size of the microbial sorbent carrier 300. The reason is to prevent the outflow of the microorganism sorption carrier 200. In addition, the leakage preventing plate 300 of the microbial sorbent carrier 200 is preferably made of a material such as stainless steel without mineral or corrosive such as ceramics.

As described above, according to the present invention, one or more biological ash reactors are installed, and the filtration module oxidatively decomposes the organic soil material using a mixed microbial community therein, and passes through the produced sludge layer to generate treated water. By installing this system, organic pollutants such as BOD, Solid Suspended, and nutrients such as nitrogen (TN) and phosphorus (TP), which are the source of environmental pollution, are efficiently treated and cleaned. By the structure that makes it possible to make treated water and backwash the filtration module, waste water introduction ⇒ aeration (reaction) ⇒ sedimentation ⇒ treatment water discharge operation and waste water transfer pump (P1) , Circulating and sludge drawing pump (P2), blower, discharge pump (P3), etc. can be controlled by a timely controller to operate at regular intervals, so fully automatic operation is possible There is an effect. Alternatively, each operation may be operated by a single operation, thereby reducing the costs associated with the construction and operation of the treatment plant.

Claims (7)

In a device that is capable of treating wastewater, A flow rate adjusting tank provided with a screen for firstly filtering solids of the infiltrating wastewater and an acid pipe for floating the solids by applying pressurized air to the wastewater filtered by the screen; The unprocessed small-sized material in the sewage and wastewater introduced into the flow regulating tank is formed continuously and accumulated at the bottom. Secondly, the suspended solids in the sewage and wastewater flowing from the flow regulating tank are treated secondly. A sludge thickening tank equipped with a second screen having a fine scale to make it; A plurality of microbial sorption carriers which are formed in a continuous section of the sludge concentration tank and flowably arranged to sorify the organic matter of the secondary filtered treated wastewater, which is quantitatively introduced, and fixedly disposed at a position adjacent to the microbial sorption carriers And filter the untreated organic matter, and the upper and lower filtration module is installed in contact with the pressurized air supply means and the discharge means, respectively, and the pressurized air for floating the solid matter disposed under the microorganism sorption carrier and the filtration module A batch reaction tank provided therein with a second acid engine; And A high level of wastewater by a batch reaction tank using a microbial sorbent carrier and a filtration module comprising a treatment tank which is formed continuously in the batch reaction tank and finally disinfects and discharges the filtered water that is sucked in from the batch reaction tank and discharged. Processing unit. According to claim 1, wherein the microorganism sorption carrier is a synthetic material of polyurethane, vinyl chloride, ethylene and propylene o by a batch reaction tank using a microorganism sorption carrier and a filtration module, characterized in that molded into a solid size of 4 ~ 6mm. Advanced treatment of waste water. According to claim 1, wherein the filtration module body is made of a cylindrical mesh made of stainless steel, both ends of the outer filter cylinder closed with a plate body formed with holes in contact with the pressurized air supply means and the discharge means; And It is installed inside the outer filter barrel, the body portion is made of a cylindrical filter material of ceramic material, one end of the opening is completely closed while the other opening is in contact with the pressurized air supply means through the hole of the closing plate body An advanced treatment apparatus for wastewater by a batch reaction tank using a microbial sorbent carrier and a filtration module, characterized in that it comprises an inner filter tube closed with a plate body having an inlet. According to claim 3, wherein the filter network of the outer filter tube is a structure in which at least three or more meshes are stacked, using a microorganism sorption carrier and filtration module, characterized in that to have a smaller mesh scale from the outer network to the inner network Advanced treatment system for wastewater and wastewater by a batch reactor. According to claim 1, wherein the pressurized air supply means is a blower (BLOWER) for generating air having a predetermined pressure, the discharge means is a ash using a microorganism sorption carrier and filtration module, characterized in that the pump (P3). Advanced treatment system for wastewater and wastewater by reactor. The method of claim 1, wherein the inner bottom of the ash reactor is further provided with a prevention plate for preventing the outflow of the microbial sorbent carrier, the leakage prevention plate is characterized in that the through holes of a smaller diameter than the size of the microbial sorbent carrier is formed Advanced treatment device for wastewater by ash reactor using microbial sorption carrier and filtration module. According to claim 1, wherein the flow rate adjustment tank, sludge concentration tank and the wastewater by the ash reaction tank using a microbial sorbent carrier and filtration module, characterized in that the water level gauge is further installed to maintain the quantification of the incoming waste water. , High-level processor.