KR100847079B1 - A Sewage disposal Purifying - Google Patents

Abstract

The present invention is to separate the suspended solids and sediment sludge generated in the sedimentation process of waste water from the waste water digestion process by anaerobic digestion, and to purify the waste water and then discharge the final treated water discharged with the sewage sedimentation sewage water treatment The present invention relates to a wastewater treatment apparatus that can be used as reused water.

According to the present invention, since the suspended solids or sediment sludge generated during sedimentation of wastewater can be digested in a sludge treatment tank, additional costs are required to collect and dispose of the suspended solids or sediment sludge produced in sedimentation as in the prior art. It is possible to completely solve the problem, especially methane gas and alkaline liquid generated during the digestion process of the sludge treatment tank can be used as living energy resources and liquid fertilizer, and the microorganisms attached to the wastewater treatment aeration tank are attached. The inner and outer circumference is curved to produce a corrugated hollow cylinder, which increases the cross-sectional area of microbial activity more than 2 times compared to the conventional one, improving the purification efficiency.The final aeration effluent is sterilized and sterilized to be introduced into the sedimentation tank with waste water. To reuse water for wastewater treatment Can further activate the microorganisms.

Wastewater treatment device, filter media where microorganisms are attached, reusable water, water supply facilities

Description

Sewage disposal Purifying

1 is a plan view of a wastewater treatment apparatus according to the present invention.

2 is a cross-sectional view of the first embodiment showing the sludge treatment tank of FIG.

3 is a sectional view of a second embodiment showing the sludge treatment tank of FIG. 2;

Figure 4 is a side cross-sectional view showing a medium attached microorganisms are randomly filled in each aeration tank of the multi-stage aeration tank of FIG.

<Description of the code | symbol about the principal part of drawing>

100: sedimentation separation tank 200, 200a: sludge treatment tank

300: flow rate adjustment tank 400: preliminary filtration tank

500: multi-stage aeration tank 501: first aeration tank

502: second aeration tank 600: sedimentation tank

700: aeration discharge tank 800: sterilization disinfection tank

The present invention relates to a wastewater treatment apparatus, and more particularly, to a wastewater treatment apparatus which separates suspended solids and sediment sludge generated during sedimentation and separation of wastewater from wastewater and digests them in an anaerobic digestion method.

In general, wastewater treatment devices are used to purify domestic wastewater, various industrial wastewater, and livestock wastewater to prevent environmental pollution.

The conventional wastewater treatment device as described above collects the suspended matter or sediment sludge produced in the process of sedimentation and separation of the incoming wastewater for purification treatment by operating a separate collection device, and collected by the collection device about once a year. Discard suspended solids or settling sludge.

In addition, the conventional wastewater treatment apparatus as described above is made of plastic having a diameter of about 3 cm and a length of about 5 cm in purifying the intermediate water generated during the sedimentation and separation of the wastewater, that is, the water to be treated which is the actual purification treatment. Aerobic decomposition or anaerobic decomposition by means of aeration of air supplied from an aeration apparatus installed in the aeration tank using an aeration tank filled with a plurality of carriers (eg, a yakult vessel in which the bottom is drilled and the water to be treated therein). By activating the microorganisms in the filter medium to which the plurality of microorganisms are attached, the organic matter contained in the water to be introduced from the preliminary filtration tank 400 is subjected to aerobic decomposition or anaerobic decomposition to purify the water to be treated, and then the final treated water. Discharge to the outside.

Such a conventional wastewater treatment device has a problem in that additional costs are required to collect and dispose of the suspended solids or sediment sludge generated in the sedimentation process as described above, and in particular, the suspended solids collected by the collection apparatus at about one year intervals. When disposing of the settling sludge, it is usually necessary to clean the entire wastewater treatment apparatus, so that the microorganisms activated in the aeration tank are removed in a large amount during the purification process, thereby reducing the purification effect.

The present invention is to solve the above-mentioned conventional problems, an object of the present invention is to separate the suspended solids and sediment sludge generated in the sedimentation process of the waste water from the waste water to be digested by anaerobic digestion, and to purify the waste water It is to provide a wastewater treatment apparatus that can be utilized as the reused water required for wastewater treatment by introducing the final treated water discharged together with the sedimentation wastewater.

In order to achieve the object of the present invention as described above, the wastewater treatment apparatus according to the present invention, while causing the sedimentation and separation of solids while the incoming wastewater is retained, the anaerobic decomposition takes place to float, intermediate water, sediment sludge A sedimentation separation tank separated by; After collecting the suspended matter and sediment sludge of the sedimentation tank through the suspended inlet pipe and sediment sludge inlet pipe connected to the sedimentation tank, the suspended solids and the collected sludge are continuously and multistage in a plurality of digester tanks filled with anaerobic microorganisms. A sludge treatment tank for extinguishing by extinguishing; A flow rate adjusting tank configured to transfer the intermediate water to the preliminary filtration tank when the flow rate of the intermediate water increases by a predetermined amount or more while constantly adjusting the flow rate of the intermediate water introduced through the intermediate water inlet pipe connected to the sedimentation separation tank; A preliminary filtration tank for preliminary multi-stage filtering of the intermediate water flowing from the flow rate adjustment tank using a plurality of filters to generate the water to be treated; It is aerobic due to the aeration of air supplied from each aeration device of a plurality of aeration tanks, which are in communication with each other, and are provided with an aeration device inside each other, and in which a plurality of microorganisms attached to a specific shape cylinder are attached randomly. A multi-stage aeration tank for purifying the treated water by aerobic decomposition or anaerobic decomposition of organic matter contained in the water to be treated introduced from the preliminary filtration tank by activating microorganisms decomposed or anaerobic to the media to which the plurality of microorganisms are attached; A precipitation tank for precipitating sludge sludge remaining in the water to be purified by aerobic or anaerobic decomposition of microorganisms in the multi-stage aeration tank by passing a filter medium while the water to be treated remains; An aeration discharge tank for discharging the final to-be-treated water from which the sedimentation sludge is filtered by the precipitation tank to the outside while operating the aeration pump therein; And disinfecting the final treated water discharged through the aeration discharge tank using a disinfectant disinfectant and then finally discharged or introduced together with the waste water into the sedimentation separation tank through a discharge pipe connected to the precipitation separation tank to treat the wastewater. It consists of sterilization disinfection tank utilized as reuse water.

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

1 to 4, the sedimentation separation tank 100 separates the suspended solids, intermediate water, and settling sludge by causing sedimentation and separation of solids while inflowing wastewater.

The sludge treatment tanks 200 and 200a collect the suspended matter and sedimentation sludge of the sedimentation tank through the floating inlet pipe and the sedimentation sludge inlet pipe connected to the sedimentation tank 100, and then the collected suspended matter and the settled sludge are anaerobic microorganisms. Digestion is carried out by continuous and multistage digestion in a number of filled digesters.

2 shows a sludge treatment tank 200 according to a first embodiment of the present invention.

The sludge collection tank 210 of the sludge treatment tank 200 drives the motor pump (P) of the sedimentation separation tank 100 through the floating inlet pipe and the precipitation sludge inlet pipe connected to the precipitation separation tank 100. Collect suspended solids and settling sludge.

The main body 220 of the sludge treatment tank 200 is introduced through the inlet 221 formed on both sides of the suspended solids and sedimentation sludge through a transfer pipe connected to the sludge collection tank 210, and a lid at the center of the upper surface of the sludge treatment tank 200. The provided check entrance 222 is formed, the bottom surface is formed in a V-shape, the precipitate partition wall 223 protrudes from the center portion of the V-shaped bottom surface.

The pair of primary digestion tanks 230 of the sludge treatment tank 200 is filled with anaerobic microorganisms therein, and the lower end and the main body 220 in a state spaced apart from both side walls of the main body 220 at regular intervals. It is partitioned by a first partition 232 which is installed to form an opening 231 between the bottom surface of the, and the acidic fermentation of the suspended solids and precipitate sludge introduced through the inlet 221 of the main body 220 is primarily anaerobic Digest.

The secondary digester 240 of the sludge treatment tank 200 is filled with anaerobic microorganisms therein, and the middle portion of the pair of first partition walls 232 partitioning the pair of primary digesters 230. Float and sediment which is partitioned by the second partition 241 and the bottom surface of the main body 220 connected to each other, and anaerobic digestion by the primary digester 230 first and then introduced through the opening 231 Acidic decay of sludge is secondary anaerobic digestion.

The third digestion tank 250 of the sludge treatment tank 200 is filled with anaerobic microorganisms, the lower end portion is located between the sediment bulkhead 223 in a state close to the bottom surface of the body 220. Floating material which is fixed through the upper surface of the body 220 and provided with a lid at the upper end, anaerobic digestion by the secondary digestion tank 240 secondly, and then alkaline fermented in the third order around the precipitate partition wall 223. Collect the alkaline liquid as a by-product of the super settling sludge.

The digester protection chamber 260 of the sludge treatment tank 200 is partitioned by the second partition 241 and the upper surface of the main body 220 to provide an inspection space for the digesters 230, 240, 250, and the digesters 230, 240, 250. The methane gas discharge gas pipe 261, the gas pressure regulating valve 262, the gas pressure gauge 263, and the access stairway 264 connected to the inspection entrance and exit 222 are formed therein.

3 shows a sludge treatment tank 200a according to a second embodiment of the present invention.

The sludge collection tank 210a of the sludge treatment tank 200a drives a motor pump P to float and settle the sludge of the sediment separation tank through a float inlet pipe and a precipitate sludge inlet pipe connected to the precipitation separation tank 100. Collect it.

The main body 220a of the sludge treatment tank 200a is provided with check entrances 221a provided on both sides of the upper surface of the sludge treatment tank 200a, and the floating material and the settled sludge are on the upper surface through a transfer pipe connected to the sludge collection tank 210a. Injected through the inlet 222a formed in the center, the bottom surface is formed in the reverse V-type, the precipitate partition wall 223a is formed on both sides of the reverse V-type bottom surface protruding.

The primary digestion tank 230a of the sludge treatment tank 200a is filled with anaerobic microorganisms, and the lower end portion and the main body 220a are separated from the inlet 222a at the center of the main body 220a at a predetermined interval. Is partitioned by a first partition wall 232a installed to form an opening 231a between bottom surfaces of the upper and lower surfaces, and the suspended solids and precipitate sludge introduced through the inlet 222a of the main body 220a are acid-fermented. Anaerobic digestion.

The second digestion tank 240a of the sludge treatment tank 200a is filled with anaerobic microorganisms and connected to both outer walls of the first partition wall 232a for partitioning the primary digestion tank 230a. 241a and the bottom surface of the main body 220a, are anaerobicly digested primarily by the primary digester 230a, and acidic decay of suspended solids and settling sludge flowing through the opening 231a. Anaerobic digestion.

Anaerobic microorganisms are filled in the tertiary digestion tank 250a of the sludge treatment tank 200a, and the lower end and the bottom surface of the main body 220a are separated from both side walls of the main body 220a at regular intervals. The secondary digester has a pipe shape having a lid partitioned by the third partition wall 252a installed between the sediment partition wall 223a and the respective wall surfaces on both sides of the main body 220a to form an opening 251a therebetween. After the second anaerobic digestion by 240a, the alkaline liquid, which is a byproduct of the alkaline fermentation suspended solids and the precipitated sludge, is collected around the precipitate partition wall 223a.

The digester protection chamber 260a of the sludge treatment tank 200a is partitioned by the second partition 241a and the upper surface of the main body 220a to provide an inspection space for the digesters 230a, 240a and 250a. Methane gas discharge gas pipe 261a, gas pressure regulating valve 262a, gas pressure gauge 263a, and the access stairway 264a connected to the check inlet and outlet 221a generated inside the digestion tanks 240a, 250a, and 260a. ) Is installed inside.

The flow rate adjustment tank 300 transfers the intermediate water to the preliminary filtration tank when the flow rate of the intermediate water increases by a predetermined amount or more while constantly adjusting the flow rate of the intermediate water introduced through the intermediate water inlet pipe connected to the sedimentation separation tank 100. do.

The preliminary filtration tank 400 preliminarily filters the intermediate water flowing from the flow rate adjusting tank 300 using a plurality of filters to generate the water to be treated.

The multi-stage aeration tank 500 is in communication with each of the aeration device of the plurality of aeration tank (501,502) is provided with aeration device inside each of them, and the media to which a plurality of microorganisms made of a specific shape of the cylinder is attached at random. By aerobic decomposition or anaerobic decomposition of the microorganisms by the aeration of the supplied air to the media to which the plurality of microorganisms attached to the organic matter contained in the water to be introduced from the preliminary filtration tank 400 to aerobic decomposition or anaerobic decomposition Purify the water to be treated.

For reference, FIG. 1 illustrates the multi-stage aeration tank 500 including two aeration tanks, that is, the first aeration tank 501 and the second aeration tank 502. However, if necessary, the aeration tanks are installed to communicate with each other. Can be used.

The settling tank 600 precipitates the sludge, which remains in the water to be purified by the aerobic or anaerobic decomposition of microorganisms in the multi-stage aeration tank 500, through the filter medium while the treated water is retained.

The aeration discharge tank 700 discharges the final treated water filtered by the sedimentation tank 600 to the outside while operating the aeration pump therein.

The sterilization disinfection tank 800 sterilizes the final treated water discharged through the aeration discharging tank 700 using a disinfectant disinfectant and finally discharges it or through the discharge pipe connected to the sedimentation separation tank 100. It is introduced into the sedimentation tank 100 together with the waste water to utilize the reuse water for the waste water treatment.

The wastewater treatment apparatus according to the embodiment of the present invention configured as described above operates as follows.

When wastewater is introduced into the sedimentation separation tank 100, the wastewater introduced into the sedimentation separation tank 100 causes the sedimentation and separation of solids while staying in the sedimentation separation tank 100 and is anaerobicly decomposed to float, intermediate, and the like. Water, sedimentation sludge is separated.

At this time, the suspended solids and sedimentation sludge of the sedimentation separation tank 100 is collected into the sludge treatment tank (200,200a) through the floating inlet pipe and the sedimentation sludge inlet pipe connected to the precipitation separation tank 100, anaerobic microorganisms It is digested by continuous and multistage digestion in a number of filled digesters.

Here, the process in which the suspended solids and sediment sludge of the sedimentation separation tank 100 is digested in the sludge treatment tanks 200 and 200a will be described in more detail.

First, the process of extinguishing the suspended matter and the settling sludge in the sludge treatment tank 200 according to the first embodiment of the present invention is as follows.

Continuous and multi-step anaerobic digestion in the sludge treatment tank 200 according to the first embodiment of the present invention is a process in which biologically degradable organic matter is decomposed into methane gas and carbon dioxide in the absence of oxygen It can be simply defined and divided into acidic fermentation step, acidic decay step and alkaline fermentation step.

Initially, the float and sediment sludge of the sedimentation separation tank 100 are collected by the sludge collection tank 210 through the float inlet pipe and the sedimentation sludge inlet pipe connected to the sedimentation separation tank 100. When introduced into the primary digester 230, anaerobic microorganisms filled in the primary digester 230 are acid-fermented to the suspended solids and sedimentation sludge to undergo anaerobic digestion. At this time, the polymer organic matters such as polysaccharides, fats, and proteins contained in the suspended sludge and precipitate sludge are hydrolyzed by an in vitro enzyme secreted from various anaerobic microorganisms to be converted into soluble organic substances such as monosaccharides, fatty acids, amino acids, and the like. Ferment into.

Float and sedimentation sludge containing low-molecular organic matters processed by the acidic fermentation process moves to the secondary digester 240 along the V-shaped bottom surface of the body 220 while passing through the opening 231. .

Subsequently, the anaerobic microorganisms filled in the secondary digester 240 acidify the suspended solids and the settling sludge for secondary anaerobic digestion. At this time, acetic acid and hydrogen are produced as the fatty acids, ethanol, and the like contained in the suspended solids and the settling sludge are oxidized by various anaerobic microorganisms, and as the hydrogen increases, the acidic decay of the suspended solids and the settling sludge proceeds.

The suspended matter and sedimentation sludge treated by the acid decay process are moved along the V-shaped bottom surface of the main body 220 to be naturally collected around the sediment bulkhead 223, and thus the sediment bulkhead 223 The surrounding anaerobic microorganisms ferment the suspended solids and sediment sludge alkalinely to undergo anaerobic digestion. At this time, the anaerobic microorganism generates methane gas and carbon dioxide, the final product of the anaerobic digestion using acetic acid and hydrogen generated in the secondary digestion process, and as a result, the methane gas in the digester (230, 240, 250) gradually increases In particular, an alkaline liquid, which is a by-product of alkaline fermented suspended solids and precipitated sludge, is collected in the third digester 250.

As described above, the methane gas generated as a result of the continuous anaerobic digestion process being carried out in three stages may be discharged to the outside through the gas pipe 261 of the digester protection chamber 260 and used as a living energy source. The alkaline liquid collected inside the primary digester 250 may be utilized as a liquid fertilizer.

On the other hand, the sludge digester 200 according to the first embodiment of the present invention may enter the digester protection chamber 260 to visually check the gas pressure gauge 263, and if necessary, the gas pressure regulating valve ( By opening and closing the control 262, the internal methane gas pressure can be adjusted.

Next, the process of extinguishing the suspended matter and the settling sludge in the sludge treatment tank 200a according to the second embodiment of the present invention will be described.

Continuous and multi-step anaerobic digestion in the sludge treatment tank 200a according to the second embodiment of the present invention is a process in which biologically degradable organic matter is decomposed into methane gas and carbon dioxide in the absence of oxygen. It can be defined and divided into acidic fermentation stage, acidic decay stage and alkaline fermentation stage.

Initially, the suspended solids and sedimentation sludge of the sedimentation separation tank 100 are collected into the sludge collection tank 210a through the floating inlet pipe and the sedimentation sludge inlet pipe connected to the sedimentation separation tank 100 and then the primary digester. When introduced into the 230a, anaerobic microorganisms filled in the primary digester 230a are subjected to acidic fermentation of the suspended solids and sedimentation sludge for the first anaerobic digestion. At this time, the polymer organic matters such as polysaccharides, fats, and proteins contained in the suspended sludge and precipitate sludge are hydrolyzed by an in vitro enzyme secreted from various anaerobic microorganisms to be converted into soluble organic substances such as monosaccharides, fatty acids, amino acids, and the like. Ferment into.

Float and sedimentation sludge containing low-molecular organic matter processed by the acidic fermentation process as described above moves to the secondary digester 240a along the reverse V-type bottom surface of the body 220a while passing through the opening 231a. do.

Subsequently, the anaerobic microorganisms filled in the secondary digester 240a acidify the suspended matter and the settling sludge for secondary anaerobic digestion. At this time, acetic acid and hydrogen are produced as the fatty acids, ethanol, and the like contained in the suspended solids and the settling sludge are oxidized by various anaerobic microorganisms, and as the hydrogen increases, the acidic decay of the suspended solids and the settling sludge proceeds.

The suspended matter and sedimentation sludge treated by the acidic decay process are moved along the reverse V-type bottom surface of the main body 220a and collected naturally around the sediment bulkhead 223a, and thus the sediment bulkhead ( 223a) anaerobic microorganisms in the surroundings ferment the suspended solids and sedimentation sludge alkalinely to undergo anaerobic digestion in the third phase. At this time, the anaerobic microorganism generates methane gas and carbon dioxide, the final product of the anaerobic digestion process using acetic acid and hydrogen generated in the secondary digestion process, as a result of the methane gas inside the digester (230a, 240a, 250a) Gradually increasing, in particular, the alkaline liquid, which is a by-product of alkaline fermented suspended solids and precipitated sludge, is collected in the third digester 250a.

As described above, the methane gas generated as a result of the continuous anaerobic digestion process of the third stage and the multi-stage process may be discharged to the outside through the gas pipe 261a of the digester protection chamber 260a and used as a living energy resource. The alkaline liquid collected inside the primary digester 250a may be utilized as a liquid fertilizer.

On the other hand, the manager of the sludge treatment tank 200a according to the second embodiment of the present invention may enter the digester protection chamber 260a to visually check the gas pressure gauge 263a, and if necessary, the gas pressure. The internal methane gas pressure can be adjusted by opening and closing the control valve 262a.

After the waste water is sedimented and separated from the sedimentation separation tank 100 as described above, the flow rate adjusting tank 300 through the intermediate water inlet pipe connected to the sedimentation separation tank 100 and the intermediate water in the sedimentation separation tank 100 are then separated. Flows into. At this time, the flow rate adjustment tank 300 transfers the intermediate water to the preliminary filtration tank 400 when the flow rate of the intermediate water increases by a predetermined amount or more while constantly adjusting the flow rate of the intermediate water.

The intermediate water transferred to the preliminary filtration tank 400 is preliminarily multi-stage filtered by a plurality of filters installed in the preliminary filtration tank 400 to generate treated water.

Subsequently, the water to be produced by the preliminary filtration tank 400 passes through the first aeration tank 501 and the second aeration tank 502 of the multi-stage aeration tank 500, in which the aeration apparatus of each aeration tank 501, 502 is used. As the microorganisms which are subjected to aerobic or anaerobic decomposition by the aeration of the supplied air are activated in the media to which the plurality of microorganisms are attached, organic matter contained in the treated water flowing from the preliminary filtration tank 400 is aerobic or anaerobic decomposition. The water to be treated is purified. The aerobic decomposition is a process of mainly decomposing phosphorus (P) contained in the water to be treated by aerobic microorganisms activated in the media attached to the microorganisms located in the vertical direction in the aeration tank (501,502) as shown in FIG. In addition, the anaerobic decomposition is a process of mainly decomposing nitrogen (N) or sludge contained in the water to be treated by anaerobic microorganisms activated in the media to which the microorganisms located in the horizontal direction inside the aeration tanks 501 and 502 are attached.

For reference, the media to which the microorganisms are attached, as shown in Figure 4, because the inner and outer peripheral surface is curved to produce a corrugated hollow cylinder, the conventional communication of the plastic of about 3cm in diameter and about 5cm in length When fabricated in the same size as a sieve (eg, a yogurt container in which the bottom is perforated and flows in water to be treated), the cross-sectional area of microbial activity is increased by two times or more compared with the conventional method, thereby improving the purification efficiency.

In fact, when the size of the media to which the microorganism is attached according to the present invention is reduced to 50 to 70% as compared with the conventional plastic communication, the same purification efficiency as when using the conventional plastic communication is achieved. It could be expected, and thus the manufacturing cost could be reduced by making the aeration tanks 501 and 502 smaller in size than in the related art.

After the treated water is purified in the multi-stage aeration tank 500 as described above, the untreated water flows into the sedimentation tank 600 and stays therein, and the multi-stage aeration tank while the untreated water stays in the sedimentation tank 600. The sedimentation sludge remaining in the treated water purified by the aerobic or anaerobic decomposition action of the microorganisms in 500 is precipitated while passing through the filter medium in the sedimentation tank 600.

The final to-be-treated water in which the residual sedimentation sludge is filtered by the sedimentation tank 600 is successively introduced into the aeration discharge tank 700, and then is moved outwardly by the operation of the aeration pump inside the aeration discharge tank 700. The aerated discharged water discharged in this way is finally introduced into the sterilization disinfection tank 800, and then sterilized and disinfected by a disinfectant disinfectant (eg, solid chlorine agent) in the disinfection tank 800, and then finally discharged or precipitated. Through the discharge pipe connected to the separation tank 100 is introduced into the sedimentation separation tank 100 with the waste water is utilized as the reuse water required for waste water treatment.

As such, when the sterilized and sterilized reuse water is introduced into the sedimentation separation tank 100 together with the waste water, the amount of dissolved oxygen in the treated water may be increased without using a separate ozone generator to further activate microorganisms.

The wastewater treatment apparatus according to the present invention described above is not limited to the above-described embodiments, and any person having ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention as claimed in the following claims. However, the technical spirit is to the extent that various changes can be implemented.

According to the present invention as described above, since the suspended matter and sediment sludge of the sedimentation tank is digested in the sludge treatment tank, additional costs are required to collect and dispose of the suspended matter or sediment sludge generated in the sedimentation separation process as in the prior art. The problem can be completely solved, and in particular, methane gas and alkaline liquid generated during the digestion treatment of the sludge treatment tank can be utilized as living energy resources and liquid fertilizer, respectively.

In addition, since the suspended solids and sediment sludge contained in the waste water are digested, there is no need to clean the entire waste water treatment apparatus while disposing of suspended solids or sediment sludge as in the prior art, and thus, microorganisms activated in the aeration tank are largely removed during the purification process. It is possible to stably anticipate the purification effect of the wastewater treatment device by eliminating the problem that the purification effect is lowered. Compared to the microbial activity cross-sectional area is increased by more than two times to improve the purification efficiency, it is possible to reduce the production cost by further miniaturizing the size of the aeration tank.

In addition, the aeration discharging water discharged from the aeration discharge tank sterilizes and disinfects the wastewater into the sedimentation separation tank, and utilizes it as reused water for wastewater treatment, so that the amount of dissolved oxygen in the treated water is used without using a separate ozone generator. It can be increased to activate microorganisms even more.

Claims (4)

A sedimentation separation tank 100 for causing sedimentation and separation of solids while the introduced wastewater is retained, and for separating anaerobic decomposition into suspended matter, intermediate water, and settling sludge; After collecting the suspended matter and sedimentation sludge of the sedimentation tank through the suspended inlet pipe and sedimentation sludge inlet pipe connected to the sedimentation separation tank 100, the collected suspended solids and sedimentation sludge are continuously in a plurality of digestion tanks filled with anaerobic microorganisms. Extinguishing sludge treatment tank (200,200a) by the multi-step extinguishing action; While adjusting the flow rate of the intermediate water flowing through the intermediate water inlet pipe connected to the sedimentation separation tank 100 while the flow rate of the intermediate water is increased by a predetermined amount or more flow rate adjusting tank 300 for transferring the intermediate water to the preliminary filtration tank ; A preliminary filtration tank 400 generating pretreatment water by preliminarily multi-stage filtering intermediate water flowing from the flow rate adjustment tank 300 using a plurality of filters; Aeration action of air supplied from each aeration device of a plurality of aeration tanks 501 and 502 which are in communication with each other and are provided with an aeration device inside each other and in which a plurality of microorganisms attached to a specific shape cylinder are attached randomly. By activating the aerobic decomposition or anaerobic decomposition of the microorganisms in the filter medium to which the plurality of microorganisms are attached by aerobic decomposition or anaerobic decomposition of the organic matter contained in the treated water flowing from the preliminary filtration tank 400 to purify the treated water A multi-stage aeration tank 500; A sedimentation tank 600 for allowing sedimentation sludge remaining in the water to be purified by aerobic or anaerobic decomposition of microorganisms in the multi-stage aeration tank 500 to pass through the filter medium while the treated water stays to precipitate; An aeration discharge tank 700 for discharging the final treated water filtered by the sedimentation tank 600 to the outside while operating the aeration pump therein; And The final treated water discharged through the aeration discharge tank 700 is sterilized and sterilized using a disinfectant disinfectant and then finally discharged or the sedimentation separation tank 100 through a discharge pipe connected to the precipitation separation tank 100. Sterilization disinfection tank 800 that is introduced into the waste water to be used as reused water for wastewater treatment; Waste water treatment device, characterized in that consisting of. According to claim 1, wherein the sludge treatment tank 200 A sludge collection tank 210 for driving the motor pump P to collect the suspended matter and sedimentation sludge of the sedimentation separation tank 100 through the floating inflow pipe and the sedimentation sludge inflow pipe connected to the precipitation separation tank 100; The float and sedimentation sludge are introduced through the inlet 221 formed on both sides of the upper surface through a transfer pipe connected to the sludge collection tank 210, and a check entrance 222 having a lid is formed at the center of the upper surface, and the bottom is formed. A main body 220 having a surface having a V shape and having a precipitate partition wall 223 protruding from a central portion of the V shape bottom surface; An anaerobic microorganism is filled therein, and the first partition wall is installed to form an opening 231 between the lower end of the main body 220 and the bottom surface of the main body 220 at a predetermined interval from both wall surfaces of the main body 220. A pair of primary digesters 230 partitioned by 232 and acidic fermentation of suspended solids and sedimentation sludge introduced through the inlet 221 of the body 220 to anaerobic digestion first; The anaerobic microorganisms are filled therein, and the second partition 241 and the main body 220 which connect middle portions of the pair of first partitions 232 that partition the pair of primary digesters 230 to each other. The secondary digester 240 is partitioned by the bottom surface of the secondary anaerobic digestion by the first digestion tank 230, the first anaerobic digestion and the acidic decay of suspended solids and sediment sludge flowing through the opening 231. ); Anaerobic microorganisms are filled therein, and the lower end thereof is fixed through the upper surface of the main body 220 so as to be positioned between the sediment bulkheads 223 in a state in which the lower end is adjacent to the bottom surface of the main body 220, and a lid is provided at the upper end. After the anaerobic digestion by the secondary digester 240 in the provided pipe shape, secondary digestion tank for collecting the alkaline liquid which is a by-product of the suspended fermentation and precipitate sludge in the vicinity of the sediment bulkhead 223 ( 250); And Methane gas discharge gas pipe 261, which is partitioned by the second partition 241 and the upper surface of the main body 220 to provide a check space for the digester (230, 240, 250), the inside of the digester (230, 240, 250), A digester protection chamber 260 having a gas pressure regulating valve 262, a gas pressure gauge 263, and an access stairway 264 connected to the check entrance 222 therein; Waste water treatment device, characterized in that consisting of. The sludge treatment tank 200a of claim 1, wherein A sludge collection tank 210a for driving the motor pump P to collect the floats and the settling sludge of the settling separation tank through the float inlet pipe and the settling sludge inlet pipe connected to the settling separation tank 100; Check openings (221a) having a lid is formed on both sides of the upper surface, the float and sedimentation sludge is introduced through the inlet (222a) formed in the center of the upper surface through a transfer pipe connected to the sludge collection tank (210a), the bottom A body 220a having a surface formed in an inverted V shape and having a precipitate partition wall 223a protruding from both sides of the inverted V type bottom surface; Anaerobic microorganisms are filled therein, and the openings 231a are formed between the lower end and the bottom surface of the main body 220a in a state spaced apart from the inlet 222a at the center of the main body 220a at regular intervals. A primary digestion tank 230a partitioned by a first partition 232a and subjected to acidic fermentation of suspended solids and precipitated sludge introduced through the inlet 222a of the main body 220a for primary anaerobic digestion; Anaerobic microorganisms are filled therein, and are partitioned by a second partition wall 241a connected to both outer walls of the first partition wall 232a for partitioning the primary digester 230a and a bottom surface of the main body 220a. Secondary digestion tank 240a for anaerobic digestion by acidic decay of suspended solids and sediment sludge introduced through the opening 231a after the first anaerobic digestion by the primary digester 230a; Anaerobic microorganisms are filled therein, and the precipitate partition wall 223a forms an opening 251a between a lower end of the main body 220a and a bottom surface of the main body 220a in a state spaced apart from both side wall surfaces of the main body 220a. And the pipe shape is provided with a lid partitioned by a third partition 252a is installed between each side of the wall surface of both sides of the body (220a), after the second anaerobic digestion by the secondary digester (240a) and the sediment bulkhead ( 223a) a tertiary digestion tank 250a which collects an alkaline liquid which is a byproduct of precipitated sludge and suspended solids fermented in a third order around; And Methane partitioned by the second partition 241a and the upper surface of the main body 220a provides an inspection space for the digesters 230a, 240a and 250a, and the methane generated inside the digesters 240a, 250a and 260a. A digester protection chamber 260a having a gas discharge gas pipe 261a, a gas pressure control valve 262a, a gas pressure gauge 263a, and an access stairway 264a connected to the inspection entrance and exit 221a; Waste water treatment device, characterized in that consisting of. According to claim 1, wherein the inner and outer peripheral surface of the medium to which the microorganisms are attached to a plurality of disorderly filled aeration tanks (501,502) of each of the multi-stage aeration tank 500 is curved to form a corrugated hollow cylindrical body Wastewater treatment device.

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