KR200292468Y1 - one manhole small column type aerobic septic tank - Google Patents

Abstract

Large-sized septic tank (= sewage treatment facility) suits the structure of transversal cylindrical shape, whereas small-sized septic tank (= sewage treatment facility) is suitable for three-dimensional cylindrical structure.

Since the internal space of the small-sized IMC is small, it is very important not only the treatment efficiency of the septic tank, but also the possibility of repair workability and repairability.

Until now, the small-sized septic tank was difficult to manufacture because its internal structure could not be divided into several spaces, which could not be accessed by people, and it was almost impossible to repair it.

In this design, the horseshoe cross-section space between the inner and the outer hose is used as the HBC chamber (= contact width chamber) by joining the septum inner section of the cylindrical type with the septic inner shell of the septic tank. It is used as a thread and denitrification chamber, so that the work is fast, safe, easy to repair and easy to handle, and has excellent processing efficiency. Also, one manhole allows access to the septic tank and inspection of all major parts.

Description

1 (= one) manhole small-sized cylindrical inlet (= sewage treatment facility) {one manhole small column type aerobic septic tank}

Cylindrical septic tank (= sewage treatment facility) is suitable for small size septic tank because its upper area is larger than its capacity. However, it is very important to design such a small-sized cylindrical IDT with a narrow internal space so that it can be easily manufactured.

Of course, the ease of fabrication should not reduce the treatment efficiency of the septic tank.

In particular, FRP septic tank needs to work in the septic tank by moving a lot of body, so securing proper working space is very important in terms of work efficiency and work hygiene and it is absolutely necessary to repair faults.

Despite its excellent function, the small-sized septic tank of the branch now has a difficult structure due to its complicated structure, and it is very difficult to repair it because it is virtually impossible to access the septic tank.

This design is a method of joining the inner and outer side of the septum during the septic tank, using the HBC chamber and the precipitation chamber between the inner and outer seams, and using the inner chamber as the storage chamber and the denitrification chamber to secure a wide working space inside the septic tank, To check all the major parts of the septic tank.

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1 is a plan view of the present invention

FIG. 1 is a plan view of the case without the storage chamber partition in FIG.

FIG. 2 is a cross-sectional view of an HBC chamber and an underwater bubble pump tube taken along line A-A '

FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 2,

FIG. 3 is a cross-sectional view taken along the line B-B 'in FIG. 1, showing the bubble pump tube and the HBC chamber.

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

DESCRIPTION OF REFERENCE NUMERALS

1. Main body of a small-sized cylindrical septic tank (= sewage treatment facility)

1A: Copper (= external)

1B: the bottom plate of the main body

2. Body top plate

2A: top plate body

2B: Manhole

2C: Checkpoint

3. Inside the septic tank

3A: Cylinder part of inner cylinder (= inner body)

3B: Inner movable precipitation chamber protrusion

3C: Inner HBC seal protrusion

3D: Intrinsic precipitation chamber diaphragm

3E: HBC upper hook plate

3F: HBC bottom plate

3G: HBC (= Suspended microbial contact material)

4. Retention chamber plate

5. Storage room

6. Denitrification room

7. HBC room

8. Precipitation chamber

9. Underwater bubble pump tube

10. Return (bubble) pump plate

11. Air pipes for aeration

12. Inlet

13. Outlet

※ dotted line is the flow of sewage

The main body 1 of the IDT cylindrical septic tank is composed of a cylindrical copper (= external) 1A and a lower plate 1B.

The upper plate 2 of the main body is integrally fabricated separately from the manhole 2B and the inspection tool 2C and finally bonded to the main body 1. [

The inner rotor 3 is joined to the interior of the septic tank 1.

The inner rotor 3 is formed by vertically cutting a part of the vertical cylinder and then deforming both ends of the cut portion into the precipitation chamber projection portion 3B and the HBC chamber projection portion 3C to form a sectorial cross section.

A horseshoe-shaped HBC hanger plate 3E (3F) having a plurality of grooves is bonded to upper and lower portions of the inner sheath 3 and joined to a vertical plate type precipitation chamber partition 3D near the precipitation chamber projection 3B, Hanging microorganism contact material) (3G).

In this way, the inner rotor 3 is integrally formed with the deformed vertical cylinders 2A, 2B and 2C having the sectoral cross section integrally with the upper HBC hook plate 3E, the lower HBC hook plate 3F, and the HBC And is bonded to the copper (1A) and the lower plate (1B) of the purifying tank body (1) at a time.

The purpose of forming the precipitation chamber projection 3B is to facilitate the observation of the precipitation chamber 8 in the manhole 2B and to shorten the length of the precipitation chamber 8 to extend the length of the HBC chamber 7, The purpose is to charge more.

The purpose of forming the HBC seal protrusion 3C is to facilitate the observation of the entrance of the HBC chamber 7 with the underwater bubble pump tube 9 in the manhole and to fill the HBC further using the wide cross-sectional area due to the protrusion Purpose.

The portion where the inner rotor 3 is joined to the outer casing 1A of the purification tank is vertically provided in two rows and the inlet 12 is directly bonded to the outer joint between these two-row joints.

The portion where the inner rotor 3 is joined to the septic tank lower plate 1B is a fan-shaped horizontal plane. This jointing work is carried out in a wide inner core, so that the work is easy and fast. And the storage chamber partition plate 4, which is a vertical plate, is joined.

The inner space of the septic tank is divided into the sedimentation chamber 8 of the HBC chamber 7 between the outer and inner motions 1A and 3 and the denitration chamber 6 of the inner and inner storage chambers 5 .

The storage chamber 4 is not necessarily required, and in this case, the storage chamber and the denitration chamber are integrally formed into a storage denitration chamber. However, to increase denitrification and BOD removal efficiency, a reservoir chamber plate (4) is recommended.

The denitration chamber (6) is filled with an appropriate contact agent. The denitrification chamber 6 and the HBC chamber 7 are connected to a U-shaped bubble pump tube 9 and the outlet of the pump tube is under the water surface of the HBC chamber 7 and is referred to as an underwater bubble pump tube. This underwater bubble pump tube (9) serves also as an airstream aerator, and when the bubble supply device fails, the nature also acts as a feeder. The denitration chamber side of the bubble pump tube is preferably (but not necessarily) prepared for the occlusion by drilling a number of holes.

The HBC chamber (7) is provided with an aeration pipe (11). The aeration vortex (11) consists of a vertical part and a perforated horizontal part. In the past, bubble refinement equipment for increasing the air utilization rate has been widely used, but it is not suitable for the purpose of the septic tank which is often clogged and difficult to repair. Therefore, it is better to use a hole in the horizontal pipe even if there is some loss of air utilization.

The settling chamber (8) and the storage chamber (5) are connected to the return pipe (10). The return pipe (10) may be a general pump, but it is difficult to obtain a small pump suitable for the return pipe (10). The outlet of this pump tube pierces a number of holes to ensure that the return water is well mixed with the storage chamber wastewater (not required).

Precipitation chamber (8) The circulation, which also serves as a sediment transport, is performed by a timer, usually from 8:00 pm to 8:00 am for 12 hours. At this time, the circulating water is dispersed into various holes of the circulation pipe and flows into the storage room (5). Therefore, the BOD-rich storage wastewater and the nitrified transport circulation water are mixed well and flow into the denitration chamber (6) Denitrification is performed by the denitrifying bacteria, and then the HBC is introduced into the HBC chamber 7.

In the denitrification chamber 6, not only denitrification but also anaerobic digestion is performed, and most of the BOD is removed from the denitrification chamber 6 and deposited and stored in the sludge at the bottom of the denitrification chamber.

The HBC chamber 7 mainly performs a nitrification action and thoroughly removes residual BOD at the same time, and then removes some BOD and SS from the sedimentation chamber 8 by sedimentation.

By this transfer circulation operation, the sewage inside the septic tank is purified at night except the lower sludge.

It is recommended that the return and circulation time be set at the time when there is no sewage inflow depending on the characteristics of the source of the waste water. Usually it will be 8 pm to 8 am. However, if the circulation amount is adequate, there is no problem even if a small amount of the circulation water flows in the circulation. In principle, it should not leak out during circulation and circulation. In the morning, when the circulation is stopped and the inflow of sewage is started, the water level of the storage and denitrification chambers is increased, and therefore, the amount of water in the underwater bubble pump is decreased, and the amount of water is increased and the water level of the HBC chamber (7) It starts. At this time, the effluent water is treated at night at the HBC chamber (7) to be treated once again, so that the water quality is very good.

The operation of the present invention is as follows.

The raw water flowing through the inlet port 12 separates and stores the impurities and coarse floating matters in the storage chamber 5 and then flows into the HBC chamber 7 through the underwater bubble pump pipe 9 via the denitration chamber 6.

The underwater bubble pump tube 9 also serves to carry aeration and sewage, and the level of the HBC chamber 7 is 10 cm higher than the level of the reservoir 5 and the denitration chamber 6 due to the bubble pump operation. Therefore, even if a large amount of wastewater flows suddenly, the water level of the denitrification chamber (6) and the denitrification chamber (6) are increased, and the amount of wastewater flowing into the HBC chamber (7) That is, there is a flow adjustment operation. Further, even if there is some leakage between the HBC chamber (7) precipitation chamber (8), the reservoir (5), and the denitration chamber (6) The natural descent method in which the reservoir 5 and the denitrification chamber 6 have a higher water level than the HBC chamber 7 and the precipitation chamber 8 is in contrast to the case where the water leakage (especially the leakage between the precipitation chamber and the reservoir chamber) is large.

BOD is thoroughly removed by contact aeration in the HBC chamber (7), and the nitrified wastewater is discharged to the outflow port in the sedimentation chamber (8) leaving a small sediment.

The circulation bubble pump tube (10) is shaped like a letter "A" and the lower end touches the lower part of the precipitation chamber to suck up the sludge, and the upper horizontal tube has a number of holes to mix the circulation water and the storage water well.

The underwater bubble pump tube (9) is "U" type, and the denitrification chamber (6) suction side pipe has many holes so that the contact material does not block the suction pipe. The discharge port is below the surface of the water, and serves to transfer the pump and aeration. The water level of the HBC chamber 7 is always higher than the water level of the reservoir 5 and the denitration chamber 6 by the pump transfer operation and the capacity of the reservoir 5 and the denitration chamber 6 corresponding to the water level difference is used for the emergency flow rate adjustment do.

Since the inlet 12, the outlet 13, the underwater bubble pump tube 9, the circulating bubble pump tube 10 and the like are all adjacent to each other, the manhole is formed at a position where they can be checked. An inspection port 2C may be provided for the inspection of the opposite HBC chamber 7.

It is very convenient to manufacture the small-sized cylindrical IDT by this design. The main process is completed by separately manufacturing the main body and the inner rotor and joining them easily in a wide inner space. It is also a great advantage that leakage of joints is not a problem.

One manhole can check all of the main part of the septic tank as well as the inside of the septic tank, so it is in contrast with the conventional small septic tank that usually has three manholes even though it is difficult to access the inside of the septic tank. The treatment channel is long and the water quality is excellent and the sludge storage space is large, so that the purification tank is not required to be cleaned frequently. Even if the underwater bubble pump pipe 9 fails, the outlet of the underwater bubble pump pipe 9 is at a low water level, and the water level of the reservoir 5 and denitration chamber 6 rises naturally. Even if the air pipe for the aeration unit 11 fails, the minimum water quality is maintained by the aeration action of the underwater bubble pump pipe 9. Even if the transfer pump tube 10 fails, the water quality does not deteriorate significantly for a substantial period of time until the sludge is filled in the precipitation chamber 8.

Claims (1)

The inner rotor 3 of the fan-shaped cross section is joined to the interior of the body 1 of the cylindrical annular purification tank and the space between the outer rotor 1A and the inner rotor 3 is used as the HBC chamber 7 and the precipitation chamber 8, 1 (= one) manhole small-sized IMC cylindrical septic tank used as a reservoir (5) and denitrification chamber (6).