JPH10266300A - Waste water treatment facility used for circulating type flush toilet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waste water treatment facility having a structure to effectively and separately take out sludge in order to clean circulating water of a circulating type toilet. SOLUTION: In a waste water treatment tank, as a means to effectively take out sludge, a floating sludge removing device 5 is provided in a secondary treatment tank 11, and a precipitated sludge removing device 6 is provided in a tertiary treatment tank 12, and a device capable of recovering sludge water by a sludge water draining storage tank is provided. Therefore, the sludge can be discharged outside a treatment tank. A screen type aeration device is also provided in a primary treatment tank so that the sludge removing device effectively operates, and decay of muck and oxidizing reaction with a deposit fluocculant for water treatment are promoted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulating water treatment apparatus for a circulating toilet and has a structure for effectively separating and extracting sludge for purifying circulating water of the circulating toilet. The present invention relates to a cleaning device for a circulation toilet.

[0002]

2. Description of the Related Art In a conventional circulating flush toilet, the structure of a septic tank is very similar to that of a biological filtration system. Needed.

[0003]

In the conventional flush toilet, the excrement was not sufficiently disintegrated and the disintegration time was long. In addition, the sludge having a low specific gravity also remains suspended in the treated sludge after the collapse, and the collection of the treated sludge having a high specific gravity is limited to the time of circulating water exchange. Therefore, the degree of purification of the circulating water is low, and the circulating water exchange time is hastened. In addition, when used intensively, the purification of circulating water is not sufficient, which makes the user uncomfortable.

[0004]

In order to achieve the above-mentioned object, the present invention is provided with a treated sludge recovery device, and separates and collects the treated sludge with a low specific gravity and the treated sludge with a high specific gravity. Making it possible. As a result, the circulating flush toilet septic tank can keep the circulating water purified at all times.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the apparatus for removing air-bubble floating sludge in the secondary treatment tank of the purification tank of the circulating flush toilet constructed as described above, the circulating water floats by the pump provided in the transfer preparation chamber. Water is supplied to the upper part inside the sludge removing device, and is discharged from a water inlet provided slightly above the bottom, so that circulating water flows toward the bottom. A bubble generator for aeration is provided below the bubble adsorption and floating sludge removal device in the secondary treatment tank, and releases bubbles to the circulating water flowing toward the bottom. The released bubbles rise upward due to buoyancy, but since the flow of the circulating water is directed to the bottom, the residence time of the bubbles is prolonged, and sufficient contact with the circulating water can be performed. The bubbles are slowly rising and are accompanied by the effect of the ion-adsorbing power of the coagulant for water treatment, are adsorbed by the treated sludge having a low specific gravity, become fine bubbles, and float on the upper part of the bubble-absorbing floating sludge removing device. The floating foamed sludge is pushed up by the rising treated sludge and discharged to the outside from the recovery device.

The tertiary treatment tank is a sedimentation separation treatment tank in which circulating water supplied from the secondary treatment tank flows in a gentle laminar flow to sediment heavy sludge mixed in the circulating water and accumulates at the bottom. It is. Sludge that has accumulated at the bottom can be optionally or automatically extracted by opening a siphon-type settled sludge removal device or a drain valve.

The rinsing cis tank stores circulating water supplied from the tertiary treatment tank, and aims to supply the portion of the circulating water purified in the preceding process, which has the least amount of impurities, to the toilet as washing water. Therefore, the position of the washing water discharge port is set to a height at which the remaining circulating water has the least contamination. When the discharged flush water is not flowing to the toilet, the circulating water is returned to the lower primary wastewater storage tank.
The flow rate of the washing water flowing out is limited by a flow rate control valve. When the flow rate of supplied water is large, the sludge is returned to the primary wastewater storage tank via the overflow pipe together with the treated sludge having a low specific gravity.

In the sludge drainage storage tank, the floating sludge discharged by the bubble adsorption floating sludge removal device provided in the secondary treatment tank and the siphon type settling sludge removal device provided in the tertiary treatment tank are extracted. The treated sludge is sent to a sponge filter cloth bag attached to the sludge drainage storage tank. The sludge sent in contains a lot of moisture, but since there is a multi-hole at the bottom of the sludge drainage storage tank, the moisture that has passed through the sponge filter cloth bag falls to the primary wastewater treatment tank below, leaving only the sludge, It is intended to remain in sponge filter bags.

[0009]

Embodiments will be described with reference to the drawings.
In FIG. 1, a toilet bowl 1 provided in a toilet room is connected to a primary sewage treatment tank 3 in a machine room by a drain pipe 2 provided below the floor of the toilet room.

The primary sewage treatment tank 3 has a tank that plays a role of temporarily stagnating excrement and collapsing the excrement by aeration, and a pump 4 for transferring circulating water to an upper secondary treatment tank. , And a pump tank.

The upper treatment tank is for aerating the circulating water, adsorbing the treated sludge having a low specific gravity contained in the circulating water to the air bubbles, and floating and removing the sludge.
And the treated sludge having a high specific gravity is settled by flowing the circulating water in a laminar flow, and the settling sludge removing device 6 for removing the settled sludge by an air siphon, and the circulating water for sending to a toilet bowl are filtered and stored. And a washing cis tank 13 for washing.

[Effects of the Invention] As described above, the septic tank of the circulating flush toilet of the present invention can use the circulating water of the circulating toilet in a clean state at all times. Usability and cleanliness are obtained, and the user does not feel uncomfortable and does not color the toilet.
In addition, it can be used even when water is cut off, which is a feature of the circulation toilet. Can be used where there is no sewer. The advantage of saving water is preserved.

[Brief description of the drawings]

FIG. 1 is a side view of a circulation type flush toilet of the present invention with a septic tank and a toilet attached.

FIG. 2 is a front perspective view of the septic tank of the present invention.

FIG. 3 is a plan view of the lower processing tank of the present invention.

FIG. 4 is a plan perspective view of the septic tank of the present invention and a toilet attached thereto.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Toilet bowl 2 Drain pipe 3 Primary sewage treatment tank 4 Transfer pump 5 Bubble adsorption floating sludge removal device 6 Sediment sludge removal device 7 Sludge drainage storage tank 8 Blower pump 9 Filtration material 10 Screen type aeration device 11 Secondary treatment tank 12 Tertiary treatment tank 13 Washing cis tank

Claims (4)

[Claims] 1. A treatment tank constituting a septic tank comprises a lower part and an upper part, and comprises a lower primary treatment tank, an upper secondary treatment tank, a tertiary treatment tank, and a water washing cis tank.
The primary treatment tank has a screen type aeration device for promoting the oxidization reaction between the waste and the coagulant for water treatment, and is equipped with a pump chamber for transfer to the upper treatment tank. . The secondary treatment tank is equipped with a floating sludge removal device, and the tertiary treatment tank is equipped with a settling sludge removal device.Each is equipped with a device that collects the removed sludge by a sludge drainage storage tank. A circulating flush toilet purifier that injects and accelerates the oxidation of organic matter, and performs sewage treatment by deodorizing and coagulating effects. 2. The floating sludge removing device has a cylindrical shape having a small-diameter opening at an upper portion, an opening for water supply near an upper side portion, and a drainage for drainage above a bottom portion. Has a mouth. The water supplied by this structure is
It flows from the upper part to the lower part. Equipped with an aeration device at almost the same height as the drain port, discharges air sent from the blower pump, and bubbles rise upward due to buoyancy. Since the water flow in the cylinder is directed to the lower part, the residence time of the bubbles in the water is lengthened, and the structure is effective for increasing the dissolved oxygen dissolved in the water. In addition, the air in the water adheres to light dirt while rising, and floats on the surface of the water as a foamy floating substance. The foam-like suspended matter is pushed up by the foam-like suspended matter that rises one after another, and is pushed out from a small-diameter opening provided at an upper portion, and it is possible to remove light sludge from the underwater sludge. A circulating flush toilet purifier equipped with a treatment means. 3. The tertiary treatment tank has a multi-hole plate between the water supply side and the drainage side, and the mounting extends from the bottom to above the water surface, and the mounting position is arranged so as to bisect the tank, and It is installed so that the central part becomes wide. As a result, the passing water has a substantially uniform flow from the top to the bottom, resulting in a laminar flow having a low flow velocity. Here, the heavy sludge settles and accumulates at the bottom. At the bottom of the bisected tank, a sedimentation sludge removal device is provided, and the settled sludge is sucked from the many openings provided in the sedimentation sludge removal device by the action of the air siphon, and rises inside the air siphon. A cleaning device for a circulating flush toilet equipped with a settling sludge removal device using a means for discharging to the outside. 4. The flushing cis tank is divided into upper and lower parts by a partition plate in the vicinity of the center of the tank, and the partition plate has a water pipe for supplying water to the lower part of the cis tank and an air vent pipe for releasing air from the lower cis tank. A drain pipe for overflow of the upper cis tank is provided. The water pipe is attached to the lower cis-tank to the middle stage. The air vent pipe is attached to the upper side from the partition plate, and has an opening so as to be located above the water surface height at the upper limit. The drainage pipe has an opening at the water level at the upper limit, penetrates the lower cis tank, and has a structure capable of draining to the upper surface of the primary treatment tank. In addition, on the upper part of the partition plate, a water drain by a multi-port plate is provided, and a filtering material is placed on the upper surface of the drainer,
The structure is such that the water flowing through the water pipe passes through the filter media and sends the filtered water to the lower cis tank. When water is supplied to the lower cis tank, the air inside the cis tank must be released, and a purifying device for a circulating flush toilet equipped with a structure for bleeding air from the lower cis tank through an air vent pipe.