KR890006973Y1 - Tank for treatment of sewage - Google Patents

Abstract

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Description

Septic tank

1 is a plan view showing an embodiment of the present invention.

2 is a cross-sectional view taken along the line A-A in FIG.

3 is a cross-sectional view taken along the line B-B in FIG.

4 is a cross-sectional view taken along the line C-C in FIG.

5 is a flowchart illustrating the present invention.

* Explanation of symbols for main parts of the drawings

4: sedimentation separation chamber 5: contact aeration chamber

8: blower 9: contact material

11: inlet port 13: denitrification chamber

14 partition wall 17 passage

18 barrier 21 return piping

The present invention relates to a septic tank, and more particularly, to a septic tank capable of treating ammonia nitrogen contained in flushing water of sewage as nitrogen gas.

As is well known, septic tanks have been variously used in the past.

They are various, but the basic structure is roughly aerated by the primary treatment unit for separating the sewage waste sewage into flotation, separation water, sediment solids, and the primary treatment water treated by the primary treatment unit by aeration from the blower. Iv) by aerobic microorganisms attached to the surface of the contact material, which is aerobic treatment, oxidizing and purifying, and has a structure that discharges the purified and clean water into the sewage system.

However, ammonia nitrogen is contained in the flushing water of the toilet.

When the ammonia nitrogen is oxidized in the secondary treatment part, it changes to nitric acid nitrogen or nitric acid nitrogen. In the conventional septic tank, the above-mentioned nitrous acid nitrogen and nitric acid nitrogen were discharged to the sewage system as it is. As a result, the sewage system released odors and caused drainage pollution. Therefore, it could not be placed in places where the regulation of drainage pollution is strict.

The present invention has been made in consideration of the above points, and the gist of the present invention is a sewage sedimentation separation chamber for separating sewage toilet sewage into flotation, separation water, and sediment solids, and primary treatment water sent from the sewage sedimentation separation chamber. In the septic tank having a contact aeration chamber for secondary treatment by the action of aerobic microorganism adhering to the surface of the contact material while aeration by air from the blower, a denitrification chamber is placed between the sedimentation separation chamber and the contact aeration chamber. At the same time, the downstream side of the contact aeration chamber and the vicinity of the inlet of the denitrification chamber are connected by a return pipe, and the ammonia nitrogen contained in the sewage in the contact aeration chamber is supported by superbacteria. Process to convert nitric acid or nitric acid to nitric acid, and return it to the denitrification chamber to recover the acetic acid under anaerobic denitrification. A septic tank characterized by reducing the bovine or acetic acid nitrogen to be discharged as nitrogen gas, and thereby treating ammonia nitrogen contained in the flushing toilet sewage. The denitrification chamber is introduced from the sewage sedimentation chamber before and after. A partition wall for partitioning a passage for directing the treated water from the other side of the denitration chamber to the other side and the other side to the contact aeration chamber is provided. A septic tank is provided which alternately passes through the upper and lower sides of the passage. The septic tank is characterized by the following: (1) A septic tank capable of treating ammonia nitrogen contained in the flushing toilet sewage as nitrogen gas. And thereby ammonia odor from the effluent. Can dwell, therefore ③ to drain hole to provide an installable tank, etc. is easy to place strict regulations.

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

(1) shows the septic tank main body, and it is for purifying the lavatory water filthy water sent from the toilet (3) via the drainage section (2). (4) is a sedimentation separation chamber formed at the inlet side of the septic tank main body (1), and has the function of separating the flush toilet sewage into flotation, separation water, and sediment solids by specific gravity separation. (5) is a contact aeration chamber formed at the outlet side of the septic tank 1, and is provided for aerobic treatment of the separated water separated from the sedimentation separation chamber 4. In order to perform the aerobic treatment, the contact aeration chamber 5 has a structure in which aerobic microorganisms are easily grown. That is, the air inlet pipe 6 is arrange | positioned in the center of the bottom part of the contact aeration chamber 5, and the air blower 8 is connected to this air inlet pipe 6 through the air supply pipe 7. As shown in FIG.

Moreover, the contact material 9 with corrosion resistance is arrange | positioned in the liquid surface, and the aerobic microorganism is raised on the surface. (10) is a conveying pipe disposed at the bottom of the contact aeration chamber (5) with the opening face (10a) in order to return the solids deposited on the bottom of the contact aeration chamber (5) to the precipitation separation chamber (4). It is excreted. In order to transfer solid content, the air supply pipe 7 connected to the blower 8 is connected near the lower end of the said transfer pipe 10.

The above indicates the structure of the standard septic tank, and the septic tank of the present invention is capable of treating ammonia nitrogen contained in the treated water in the septic tank configured as described above, and is configured as follows.

First, the denitrification chamber 13 having the inlet port 11 and the outlet port 12 is disposed between the precipitation separation chamber 4 and the contact aeration chamber 5.

The inlet 11 faces the sedimentation separation chamber 4 so that the upstream side of the sedimentation separation chamber 4 and the denitrification chamber 13 communicates with the inlet 12 toward the contact aeration chamber 5. In this way, the downstream side of the denitrification chamber 13 is brought into contact with the contact aeration chamber 5. The denitrification chamber 13 thus formed includes partition walls 14, 14,... This is excreted. The partition walls 14 and 14. Is discharged from the inlet 11 to impart a flow to the treated water toward the outlet 12. That is, the denitrification chamber 13 is excreted for the anaerobic treatment of the treated water, and in order to perform the anaerobic treatment well, it is necessary to clean up the environment for fostering denitrification bacteria. So first you need to avoid giving oxygen. The next important thing is to give flow to the treated water. This flow divides the inside of the denitrification chamber 13 into the partition chamber 14 to form a passage as described above, and flows the treated water flowing from the inlet 11 from one side 15 to the other 16, It is made to give to the outflow port 12, repeating from the other side 16 to the one side 15. As shown in FIG. And partition walls 14, 14,... In order to confuse this flow. A plurality of barriers 18 are disposed in the passages 17 partitioned by the intervals at required intervals. The barrier 18 is alternately arranged with an outlet 19 at the top and an outlet 19 at the bottom, thus allowing the treated water to pass through the barrier 18 above or below it. To disrupt the water flow. In the passage 17, a contact member 20 formed in a cylindrical brush shape by synthetic resin or the like is disposed. Subsequently, 21 is a return pipe disposed between the downstream side of the contact aeration chamber 5 and the vicinity of the inlet port 11 of the denitrification chamber 13, and in this return pipe 21, an air pump 21a for water supply is provided. It is interposed.

The return pipe 20 is disposed to return the treated water downstream of the contact aeration chamber 5 to the inlet 11 of the denitrification chamber 13. In other words, the denitrification chamber 13 is specially disposed to treat ammonia nitrogen contained in the flush toilet sewage.

As a treatment technique for treating this ammonia nitrogen, there is a biological super-denitrification method. This is done with the help of aerobic microorganisms, aerobic microorganisms, which convert ammonia nitrogen to aerobic nitrogen under aerobic conditions, and with the help of anaerobic denitrification bacteria, reducing nitric acid under anaerobic conditions and releasing it as nitrogen gas. It is a technique to treat sex nitrogen. Thus, in order to process ammonia nitrogen, it is necessary to first process it with an aerobic mass and convert it into nitric acid nitrogen. By the way, water is fed from the toilet 3, separated from the sedimentation separation chamber 4, and the treated water flows into the denitrification chamber 13 without being subjected to aerobic treatment, that is, ammonia nitrogen.

Therefore, ammonia nitrogen flows into the contact aeration chamber 5 without being treated in the denitrification chamber. In this contact aeration chamber 5, the ammonia nitrogen is vaporized and converted into nitric acid nitrogen or nitric acid nitrogen. In this way, in order to denitrify the nitric acid-nitred nitrogen in the contact aeration chamber and return to the denitrification chamber, the return pipe 20 described above is provided.

The amount returned from the contact aeration chamber 5 to the denitrification chamber 13 is about 5 to 10 times, preferably about 7 times, the amount of water flushed from the toilet 3 to the septic tank body 1. This is because in the contact aeration chamber 5, it is necessary to convert ammonia nitrogen to acetic acid nitrogen or nitric acid nitrogen as much as possible. Therefore, if the amount of plural times, for example, 7 times the amount of the flushing toilet sewage flowing into the septic tank body 1 is returned from the contact aeration chamber 5 to the denitrification chamber 13, the treated water is found on average. 7 cycles between the contact aeration chamber 5 and the denitrification chamber seven times, so that ammonia nitrogen can be reliably treated. Next, the circulation unit 22 will be described. The circulation unit 22 is used to circulate and reuse the treated water purified by the septic tank body 1 in the toilet 3, which not only saves water resources but also has no sewage system. Also in this case, it is possible to provide the septic tank body 1.

The interior of the purification unit 22 is divided into a contact aeration chamber 23, a filtration chamber 24, and a disinfection chamber 25. The contact aeration chamber 23 is disposed in the septic tank body 1, and the air supply pipe 7 connected to the blower 8 is connected to the air supply pipe 26. The precipitation chamber 23 'is partitioned in the neighborhood (downward in FIG. 1) of the contact aeration chamber 23, and is communicated through the opening 23. As shown in FIG. Transfer pipes 27 and 28 for returning the solids settled at the bottom of the settling basin 23 'to the settling separation chamber 4 are disposed so that their opening faces the vicinity of the bottom. An air supply pipe 7 connected to the blower 8 is connected to the lower end of the transport pipes 27 and 28.

The treated water aerated in the contact aeration chamber 23 and the settling basin 23 ′ is a communication tube 30 formed in the partition wall 29 for partitioning the settling basin 23 ′ and the filtration chamber 24. ) And flows into the square pipe 34 of the filtration chamber 24. That is, the filtration chamber 24 is disposed to remove suspended matter in the purified water in the septic tank body and the contact aeration chamber 24 at the front and rear, and the first filtration chamber 24 at the bottom in FIG. ') And the upper second filter room 27' '. The first filtering chamber 24 'is provided with a square pipe 34 in the center, and the bottom plate 32 is disposed at a predetermined distance from the bottom surface 31 between the square pipe 34 and the main wall. It is formed in what is called a double bottom. The base plate 32 is provided with a plurality of small holes 33 to pass through the water. Moreover, the opening part 35 is formed in the lower end side of the said pipe 34, and the process water of the bottom surface of the 34 is able to flow out inside a square pipe. Also in this square pipe, a transfer pipe 36 for returning the solid content to the sedimentation separation chamber 4 is disposed. The air supply pipe 7 connected to the blower 8 is also connected to the transfer pipe 36 similarly to the transfer pipe.

And (37) (38) and (39) are layers of filtration material disposed in order from the bottom on the bottom plate 32, and are for leisure of the suspended matter in the treated water. Since the particles of the filtration material layer are configured so that the treated water flows from the bottom up, the filtration material layer 37 disposed on the first lower side is the first nose, and the filtration material layer 39 disposed on the first upper side is the first one. It is set to work. In addition, the first filter room 24 'and the second filter room 24' 'are communicated by a hole 24' '', and the filter medium is disposed in the second filter room 24 ''. In the fruit 24 '', the treated water flows from the top to the bottom, and the first top is fine, and the thick filtration material is disposed as it goes down.

The clean and clean water filtered by the filtration chamber 24 'which comprises the said filtration chamber 24 is comprised so that it may flow to the disinfection chamber 25 next. This disinfecting chamber 25 is disposed to store clear and clean water for circulating to the toilet 3, and deodorizes clean and clean water filtered in the filtration chamber 24 '. The filtration tank 40 which filled the activated carbon 48 for decolorizing is partitioned. Similarly to the bottom of the filtration chamber 24, the bottom of the filtration tank 40 is provided with a bottom plate 42 on which a small hole 41 is laid, and is formed in two bottoms. The water passage 44 formed in the compartment 43 partitioning the sterilization chamber 25 communicates with the double bottom formed at the bottom of the filtration chamber. The clean water thus purified is returned to the toilet 3 as necessary. That is, between the disinfection chamber 25 and the low tank 49 for supplying the toilet water to the toilet bowl 3 is connected to the purifying pipe 51 which has the underwater motor 50. When the water level in the low tank 49 is reduced by using water in the toilet 3, the underwater detector 52 disposed in the low tank 49 detects this and outputs the signal to the old motor 50. Is transmitted to the control unit 53 for controlling the drive.

Subsequently, reference numeral 54 denotes a drain pipe disposed in the disinfection chamber 25, and is disposed in order to waterproof the water flowing over in the disinfection chamber 25 to another speed and transpire it.

The circulating water unit 22 configured as described above is used after being disposed at the next stage of the septic tank body 1, and the drain pipes 55 and 55 disposed in the contact aeration chamber 5 of the septic tank body 1, and circulation The inflow pipes 56 and 56 disposed in the contact aeration chamber 23 of the unit 22 are connected to the connection pipes 57 and 57, respectively, so that the septic tank body 1 and the circulating water unit 22 are integrated. To use.

Next, the wastewater purification action and the circulation of the clear and clean water of the above-described embodiment will be described. The flush toilet sewage when the toilet (3) is used flows into the sedimentation separation chamber (4) through the drain pipe (2). There, the solid fire settles down due to the specific gravity difference, and the floating matter floats to the liquid level, thereby separating the treated water. The treated water continues to pass through the inlet 11 and into the denitrification chamber 13 where it flows to the outlet 12 while being anaerobicly treated by anaerobic microorganisms. Thus, it enters into the contact aeration chamber 5 from the outlet 12, where it is aerobic treated by aerobic microorganisms and discharged out of the septic tank body 1 from the drain pipe 55.

The above is a distribution path in the case where the flushing toilet sewage flowing into the septic tank body 1 directly flows from the roasting pipe 2, but the septic tank body 1 of the present invention has a contact aeration chamber as described above. From (5), the return pipe 21 is returned to the denitrification chamber 13. Therefore, the treated water oxidized by the aerobic microorganisms in the contact aeration chamber 5 is repeated about 7 times and circulates therebetween. Therefore, biological denitrification is performed between them.

In other words, the ammonia nitrogen contained in the flush toilet sewage is vaporized in the contact aeration chamber 5 and converted into nitric acid nitrogen or nitric acid nitrogen. This nitric acid or nitric acid nitrogen is reduced by the action of denitrification bacteria in the denitrification chamber 13 and is released as nitrogen gas.

In the case of the septic tank of the present invention, since the denitrification by the contact aeration chamber 5 and the denitrification by the denitrification chamber 13 are repeatedly performed repeatedly, the ammonia nitrogen in the flushing toilet sewage can be treated reliably. .

In addition, the air is not supplied into the denitrification chamber 13, and the partition walls 14, 14,... The passage 17 is formed so that the flow is generated, and the barrier 18 in which the water passages 19 are formed in the upper and lower portions of the passage 17 is disposed, which causes confusion in the flow. Therefore, since denitrification bacteria are easy to grow, denitrification can be performed favorably. In addition, since the contact material 20 is disposed in the passage 17, anaerobic microorganisms such as denitrification bacteria are well grown, and the treated water and the anaerobic microorganisms are well contacted. The flushing water sewage treated as described above is usually discharged from the drain pipe 55 to the sewage system. Since the ammonia nitrogen is treated in this drainage, there are no odors and the like, and therefore it can be drained even in places with strict pollution regulations.

In this embodiment, the wastewater body 1 is reused by the circulating water unit 22 without directly draining the wastewater to the sewage system.

That is, the wastewater from the septic tank body 1 passes through the connecting pipe 57 and is deposited in the contact aeration chamber 23 of the circulating water unit 22 through the hole 23 '' after the completion of aeration treatment. It flows into the chamber 23 'and further solids precipitate out.

The solid content is returned to the sedimentation separation chamber 4 by the action of air via the transfer pipe 28. The treated water is fed from above into the square pipe 34 of the filtration chamber 24 'via the communication cylinder 30. Thus, in the process of passing through the holes 35 and 33 and passing through the filtration material layers 37, 38 and 39 disposed in the filtration chamber 24 'from the bottom up, the suspended solids mixed in the treated water are filtered. Removed. Thus, the filtered, clean water that has reached the top of the filtration chamber 24 'enters the next filtration chamber 24' 'via the trough 24' 'and passes through the filtration material layer from the top to the bottom. Flows through the water passage 44 and flows into the filtration tank 40 disposed in the disinfection chamber 25. Thus, in the process of flowing the inside of the filtration tank 40 from the bottom up, it deodorizes through the inside of the active monolayer 48. It is bleaching. Then, this floating material is removed, and the clean and clean water in which the BOD value and the COD value are as small as possible is circulated to the low tank 49 through the circulation pipe 5 by the submersible pump 50, and again washed with water. It will be provided for use. In this case, since the water level detector 52 is installed in the low tank 49, the submersible pump 50 is driven only when the drop of the water level is detected. In this way, the water-washing toilet sewage is first treated by separating solids from the sedimentation separation chamber 4 of the septic tank body 1 and biologically denitrification treatment by the cooperative action of the contact aeration chamber 5 and the denitrification chamber 13. Therefore, ammonia nitrogen is also ideally treated when drained from the septic tank body 1.

Therefore, there is no ammonia-like odor in the drainage, and it may be drained to the sewage system as it is. Also, when the circulation unit 22 is connected and reused as in the present embodiment, it can be used safely without ammonia-like odor.

As described above, the present invention provides (1) a sewage sedimentation separation chamber for separating the sewage toilet sewage into flotation, separation water, and sedimentary solids, and the primary treatment water supplied from the sewage sedimentation separation chamber from the blower. A septic tank having a contact aeration chamber for secondary treatment by the action of an aerobic microorganism adhering to the surface of a contact material while being aerated by air supply, wherein the denitrification chamber is disposed between the sedimentation separation chamber and the contact aeration chamber, The downstream side of the contact aeration chamber and the vicinity of the inlet of the denitrification chamber are connected by a return pipe, and in the contact aeration chamber, ammonia nitrogen contained in the sewage is converted to nitrous or nitric acid nitrogen under aerobic conditions with the aid of mycelia. By nitriding operation and returning it to the denitrification chamber, under the anaerobic denitrification chamber, nitrogen nitrite or nitric acid nitrogen is reduced to nitrogen gas. A septic tank characterized by discharging ammonia nitrogen contained in the flush toilet sewage, and thus, the denitrification chamber includes the treated water introduced from the sewage sedimentation loss in the previous step from the other side of the denitrification chamber. A partition wall is provided which partitions the passage for directing to the contact aeration chamber in the next stage while repeating to one side and the other side, while the partition wall divides the treated water up and down the passage. Since the barriers for alternating passage are provided, (1) the ammonia nitrogen contained in the flush toilet sewage is converted into nitric acid and nitric acid in the contact aeration chamber 5, and then in the denitrification chamber 13. It is possible to provide a septic tank that can be denitrified and discharged into the atmosphere as nitrogen gas for treatment. ② It can remove ammonia odor from the discharged water. ③ It can provide a septic tank that can be easily installed even in places with severe drainage pollution regulations.

Claims (2)

The sewage sedimentation separation chamber 4 for separating the flush toilet into the flotation, the separation water, and the sediment solids, and the primary treatment water supplied from the sewage sedimentation separation chamber 4 are blown by the air blower 8. In the septic tank provided with the contact aeration chamber 5 for secondary treatment by the action of an aerobic microorganism adhering to the surface of the contact material 9 by aeration, the sedimentation separation chamber 4 and the contact aeration chamber 5 While the denitrification chamber 13 is disposed between the outlets, the downstream side of the contact aeration chamber 5 and the vicinity of the inlet 11 of the denitrification chamber 13 are connected to the return piping 21 to form a contact aeration chamber ( In 5), the ammonia nitrogen contained in the sewage is converted into nitric acid or nitric acid under aerobic action with the aid of superbacteria, and this is subjected to nitric acid or nitric acid nitrogen under anaerobic denitrification chamber 13. Is reduced to be released as a Zaloso gas, and therefore A septic tank characterized by treating ammonia nitrogen contained in sewage. The denitrification chamber (13) according to claim 1, wherein the denitrification chamber (13) carries the treated water flowing from the sewage sedimentation separation chamber (4) in the previous step from one side of the denitrification chamber (13) to the other and from one side to the other. The partition wall 14 which partitions the channel | path 17 for directing to the contact aeration chamber 5 in a step is arrange | positioned, and the process water is divided in the channel | path 14 partitioned by the partition wall 14. A septic tank, characterized in that a barrier 18 is provided for alternating passage of the upper and lower portions of the passage 17.