JP2001113292A - Septic tank and chlorine gas water sealing device thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of the parts of a chlorine gas water seal device and the size thereof. SOLUTION: A straight pipe 18 allowing treated water to flow in a disfection tank 11 is provided and a first partition plate 21 erected so as to intercept flowing treated water to stagnate the same and a second partition plate 22 positioned on the deep side of the first partition plate 21 and suspended so that the lower end thereof is immersed in the stagnated treated water are provided in the straight pipe 18, and a chlorine gas passage is cut off by the first and second partition plates 21, 22 and the stagnating treated water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a septic tank for sterilizing treated water with chlorine and releasing the treated water, and a chlorine gas water sealing device therefor.

[0002]

2. Description of the Related Art As shown in FIG. 3, a septic tank used for the treatment of sewage such as human waste and gray water is basically composed of
It is composed of a separation processing section, a decomposition processing section, a filtration processing section, and a post-processing section. Specifically, a processing tank having several different functions is selectively combined and configured in a disinfection tank in the final processing step. Sterilization is being performed.

[0003] This purification tank is structurally connected between the treatment tanks by a transfer pipe and a transfer port to transfer the treatment water. The sterilization in the final disinfection tank is performed using chlorine, and chlorine gas is generated at this time. The chlorine gas generated in the disinfecting tank fills the disinfecting tank and flows into the preceding treatment tank through the advection pipe.

Since this chlorine gas causes rust on metal parts in the treatment tank, the conventional disinfection tank uses resin parts instead of metal parts in order to prevent rust caused by chlorine gas. Or metal parts that have been galvanized or painted.

[0005] However, there are cases where movable parts and equipment are installed in the treatment tank preceding the disinfection tank, and these parts may not be able to be galvanized or painted. In such a case, the inflow of chlorine gas from the disinfection tank to the preceding treatment tank is prevented by adopting a chlorine gas water sealing device at an inflow portion of the advancing pipe to the disinfection tank.

FIG. 4 shows a chlorine gas water sealing device at an inflow portion of a transfer pipe of a disinfection tank in a conventional purification tank.
This chlorine gas water sealing device forms a concave portion 23 a in a disinfecting tray 23 installed at an inflow portion of an advection pipe of a disinfection tank 11, and downwardly faces a tip of an extension pipe 24 attached to a tip of an advection pipe 15 via a socket 17. The tip of the provided elbow tube 25 is opened in the concave portion 23 a of the disinfecting tray 23. The treated water flowing into the disinfecting tray 23 from the elbow pipe 25 enters the concave portion 23a of the disinfecting tray 23, fills the concave portion 23a, flows through the disinfecting tray 23, and flows through the disinfecting agent device 26.
After the disinfectant (chlorine) is added by the disinfection tank 11
Sterilize by flowing down. By this disinfection, the upper space of the disinfecting tank 11 is filled with chlorine gas. However, since the open end of the elbow pipe 25 is buried in the treatment water in the recess 23a, the upper space in the disinfecting tank 11 and the elbow pipe 25 are filled. Therefore, the chlorine gas in the upper space of the disinfection tank can be prevented from flowing into the preceding treatment tank.

[0007]

However, this chlorine gas water sealing apparatus has a large disinfecting tray 23 capable of forming a recess 23a in which the tip of the elbow tube 25 is buried.
Is required, and there is a problem that the disinfection tank 11 becomes large.

In addition, there is a problem that the number of parts increases and the time required for assembly increases.

An object of the present invention is to prevent the chlorine gas water sealing device from being downsized, thereby preventing the disinfection tank from being enlarged.

Another object of the present invention is to reduce the time required for assembly by configuring the chlorine gas water sealing device with a small number of parts.

[0011]

SUMMARY OF THE INVENTION The present invention provides a chlorine gas water sealing apparatus for preventing chlorine gas generated in a disinfection tank from flowing into a preceding treatment tank through a transfer pipe for transferring treated water to the disinfection tank. In the above, there is provided a straight pipe through which the treated water flows into the disinfecting tank, and a partition plate which stands up so as to block and retain the treated water flowing into the straight pipe and stays at the lower edge at the back side thereof. A partition plate was provided so as to be buried in the treated water.

Further, according to the present invention, the pretreatment tank and the disinfection tank are connected by an advection pipe, and the treated water in the pretreatment tank is transferred to the disinfection tank via the advection pipe to be disinfected, sterilized, and discharged. In the septic tank, a straight pipe is provided to allow the treated water to flow into the disinfecting tank, and a partition plate that stands up so as to block and retain the treated water flowing into the straight pipe and a lower edge located on the back side thereof. A partition plate was provided which was suspended so as to be buried in the stagnant treated water.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional plan view showing the overall configuration of the septic tank. FIG. 2 shows a disinfection tank and a chlorine gas water sealing device, wherein (a) is a cross-sectional plan view thereof,
(B) is a longitudinal side view, (c) is a longitudinal side view of a chlorine gas water sealing device, and (d) is a partition plate arrangement view.

In this septic tank, as shown in FIG. 1, sewage flows from an inflow pipe 1 into a separation processing unit 2. The separation processing unit 2 includes a first sedimentation / separation tank 3 and a second sedimentation / separation tank 5 which communicates with the first sedimentation / separation tank 3 via the advection port 4. The sewage from the inflow pipe 1 flows into the first sedimentation / separation tank 3 to settle and separate solids, and then flows through the advection port 4 to the second sedimentation / separation tank 5 at the subsequent stage.
In the same manner, the solid matter in the sewage is settled and separated.

The second sedimentation separation tank 5 at the subsequent stage of the separation processing unit 2 is connected to an aeration and disinfection processing unit 7 through an advection pipe 6. The aeration and disinfection processing unit 7 includes a first contact aeration tank 9, a second contact aeration tank 10, and a disinfection tank 11 that communicate with each other through an advection port 8. The sewage flowing from the advection pipe 6 is subjected to aeration treatment in the first contact aeration tank 9 to oxidatively decompose organic matter, and then is transferred to the second contact aeration tank 10 through the advection port 8 to form the second contact aeration tank. At 10, the wastewater is similarly aerated.

The second contact aeration tank 10 at the subsequent stage of the aeration and disinfection unit 7 is connected to the subsequent settling unit 13 via the advection pipe 12. The sedimentation processing unit 13 forms a sedimentation treatment tank 14, and sedimentation-filters sewage flowing through the advection pipe 12. This sedimentation filtration tank 14
Is connected to the disinfection tank 11 at the subsequent stage through the advection pipe 15 to advant the supernatant (treated water).

The disinfection tank 11 sterilizes the treated water flowing from the advection pipe 15 by disinfecting it and discharges it to the discharge pipe 16.

The disinfection of the treated water in the disinfection tank 11 is shown in FIG.
As shown in FIG.
The straight pipe 18 connected by the above is installed in the disinfection tank 11 in a substantially horizontal state, treated water flowing down from the tip thereof is received by the disinfection tray 19, and chlorine as a disinfectant is disinfected from the disinfectant tube 20 installed on the disinfectant tray 19. After the addition, it is allowed to flow down into the disinfection tank 11.

In the straight pipe 18, a semicircular first partition plate 21 for blocking a lower region in the pipe is set upright at a position close to the outlet thereof, and is located at the back of the first partition plate 21 so as to be positioned inside the pipe. A second semi-circular partition plate 22 for blocking the upper region of the second partition is suspended. The straight pipe 18 is made of vinyl chloride or FRP, the partition plates 21 and 22 are made of vinyl chloride or FRP or polyethylene or polypropylene, and the upper edge of the partition plate 21 is higher than the lower edge of the partition plate 22. I have.

The straight pipe 18 and the partition plates 21 and 22 are used.
According to the first partition plate 21, the treated water flowing from the advection pipe 15 to the straight pipe 18 is blocked and retained in the straight pipe 18, and the second partition plate 22 has the lower edge of the first partition plate 21. Partition plate 2
1 to be buried in the treated water that is retained and retained. Therefore, the treated water that has flowed into the straight pipe 18 from the advection pipe 15 flows below the lower edge of the lower edge of the second partition plate 22 and flows downstream thereof, and then flows over the upper edge of the first partition plate 21. Straight tube 1
5 and flows down to the disinfecting tray 19, where chlorine is added as a disinfectant on the disinfecting tray 19 and flows down into the disinfecting tank 11. Then, the chlorine gas filling the upper part of the septic tank 11 is supplied to the first and second partition plates 2 in the straight pipe 18.
Since it is interrupted by the treated water staying at 1 and 22, it does not flow out upstream.

The treated water in the disinfection tank 11 is
It is sterilized and stays in a clean state while staying inside, and is discharged to the discharge pipe 16.

According to such a chlorine gas water sealing device, since the elbow tube and the concave portion of the disinfecting tray are not required, the number of parts is small and the size is small, and the disinfecting tank 11 is prevented from being enlarged.
Further, the time required for assembly can be reduced.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A socket 17 having a nominal diameter of 150 mm
1 and a straight pipe 18 made of vinyl chloride and having a nominal diameter of 150 mm and a length of 400 mm was installed in the disinfection tank 11 in a horizontal state.

In the straight tube 18, first and second
The partition plates 21 and 22 were installed. First and second partition plates 2
1 and 22 use a 3 mm thick plate made of vinyl chloride,
It was formed by an arc having a diameter 5 mm larger than the outer diameter of the straight pipe 18 and horizontal straight sides. Then, cut grooves are formed from above and below the straight pipe 18 at an interval of 50 mm from the outlet end of the straight pipe 18, and the first and second partition plates 21, 22 are placed in the cut grooves from the outside so that the straight sides are horizontal. The fitting joint was welded with vinyl chloride from the outside to make it watertight and airtight. The first partition plate 21 installed on the straight pipe 18 has a straight side that forms a horizontal upper edge at a height of 40 mm from the pipe bottom in the straight pipe 18, and the second partition plate 22.
Has a straight side of 30 mm from the bottom of the straight tube 18.
Formed a horizontal lower edge.

[0025]

According to the present invention, the chlorine gas water sealing device does not require the elbow tube or the concave portion of the disinfecting tray, so that the number of parts is small and the size is small, and the disinfecting tank is prevented from being enlarged. Thus, the time required for assembling can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view showing one embodiment of a septic tank according to the present invention.

FIGS. 2A and 2B show a disinfection tank and a chlorine gas water sealing device in one embodiment of the septic tank of the present invention, wherein FIG. 2A is a cross-sectional plan view, FIG. 2B is a longitudinal side view, and FIG. FIG. 3D is a vertical sectional side view of the water sealing device, and FIG.

FIG. 3 is a functional block diagram of a septic tank.

FIG. 4 shows a conventional disinfection tank of a septic tank and its chlorine gas water sealing device, wherein (a) is a cross-sectional plan view of the disinfection tank, (b) is a longitudinal side view, and (c) is a chlorine gas water sealing device. It is a vertical side view.

[Description of Signs] 11: disinfection tank, 14: settling tank, 15: advection pipe, 1
8: straight pipe, 21: first partition plate, 22: second partition plate.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C02F 1/50 550 C02F 1/50 550C

Claims (2)

[Claims] 1. A chlorine gas water sealing device for preventing chlorine gas generated in a disinfection tank from flowing into a preceding treatment tank through an advection pipe for transferring treated water to the disinfection tank. A straight pipe that flows into the straight pipe, and a partition plate that stands up so as to block and retain the treated water flowing into the straight pipe, and hangs down so as to be buried in the treated water that is located at the back side and has a lower edge that is retained. A water sealing device for chlorine gas, characterized by having a partitioned plate provided. 2. A purification tank which connects a preceding treatment tank and a disinfecting tank with an advection pipe, transfers treated water in the preceding processing tank to a disinfection tank via an advection pipe, disinfects and sterilizes, and then discharges the water. A straight pipe through which the treated water flows into the disinfection tank is provided, and a partition plate that stands up so as to block and retain the treated water that flows into the straight pipe and treated water that is located at the back of the partition plate and stays at the lower edge. A septic tank provided with a partition plate that is suspended so as to be buried in the tank.