JPH0422497A - Immersion filter bed apparatus - Google Patents

Abstract

PURPOSE:To continuously perform contact oxidizing treatment by a method wherein an immersion filter bed main body is immersed in a basin of water to be treated so that the axial direction thereof becomes almost horizontal. and the water to be treated such as sewage in the basin is sent into the filter bed main body along with air by a pump. CONSTITUTION:The filter bed main bodies 1 connected along the longitudinal direction of a basin 14 of water to be treated such as a sewage basin are immersed in the basin 14 so that the axial direction thereof becomes horizontal and, when a circulation pump 9 is operated, the water to be treated such as sewage sucked from the suction port of the pump 9 is injected in the long continuous filter bed main bodies l, and the open air is sucked from an ejector part 12 to sent air into the long continuous filter bed main bodies 1, wherein stripe like filter materials are provided under tension to subject the water to be treated to sufficient contact oxidation, and the treated water is discharged into the basin 14 from the leading end opening parts of the filter bed main bodies 1, and passed through the outside of the group of the filter bed main bodies 1 to be again sucked from the suction port of the pump 9 and circulated to continuously perform contact oxidation treatment. Only one filter bed main body 1 is used or a plurality of the filter bed main bodies are connected corresponding to the shape of a sewage sump, a sewage tank, a basin or a culvert.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a submerged filter bed apparatus used in catalytic oxidation water treatment.

(Prior art) Most of the conventional catalytic oxidation water treatment methods using immersion filter devices are vertical circulation methods that utilize water depth, and require construction of structures to ensure water depth. This is especially necessary, and the construction cost of this structure usually accounts for more than 50% of the total cost, posing a heavy economic burden.

Furthermore, catalytic oxidation water treatment at low water depths is rarely carried out; in cases where the water depth is shallow (less than 1 m), sewage must be treated by introducing it into a separate device with sufficient water depth, or Unsatisfactory methods such as simple filtration were used.

(Problems to be Solved by the Invention) As mentioned above, the construction cost of conventional water treatment equipment using the catalytic oxidation method is high, and the catalytic oxidation method is almost never used in wastewater ponds with shallow water depths. Ta.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a submerged filter bed device that is inexpensive to construct and can be easily subjected to catalytic oxidation treatment by simply immersing at least one end in a sewage basin.

[Structure of the invention]

(Means for Solving the Problems) The immersion filter device of the invention according to claim 1 of the present invention comprises a pipe body and a string-like filter medium stretched in the pipe body so that water can pass in the axial direction. A submerged filter body is immersed in the water leakage to be treated in a substantially horizontal manner in the axial direction, and the filter body is connected to one end of the filter body and the water to be treated in the water pond to be treated is sent to the filter body together with air. It consists of the filter bed body and a circulation pump that forcibly circulates the water to be treated by leaking the water to be treated.

The immersion filter device of the invention according to claim 2 is composed of a pipe body and a string-like filter material stretched in the pipe body so that water can pass in the axial direction. a submerged filter body that is buried in a substantially horizontal direction and has both ends open to the leakage of the water to be treated; and a body that is connected to one end of the filter body and allows the water to be treated in the water pond to be treated to flow together with air. It consists of a circulation pump that forcibly circulates the water to be fed into the filter bed and the water to be treated.

The submerged filter bed device of the invention according to claim 3 is the submerged filter bed device according to any one of claims 1 or 2, in which a plurality of filter bed bodies are airtightly connected in the axial direction.

The submerged filter bed device according to the invention according to claim 4 is the submerged filter bed device according to claim 3, in which a plurality of filter bed bodies are airtightly connected by a flexible connector.

The submerged filter bed device according to the invention according to claim 5 is the submerged filter bed device according to any one of claims 1 to 3, wherein the tubular body is flexible.

(Function) The submerged filter device of the invention as set forth in claim 1 is provided by immersing the submerged filter main body in a water pond to be treated with its axial direction substantially horizontal, and using a pump to remove sewage from leaking water to be treated, etc. By sending water together with air into the filter bed body, the water to be treated is catalytically oxidized by the string-like filter media stretched inside the filter bed body, and is discharged from the filter bed body and circulated through the water pond to be pumped again. It is sucked into the filter bed body and circulated, and catalytic oxidation treatment is performed continuously. Since the filter bed main body is immersed in the water pond with its axial direction lying substantially horizontally, it can be immersed even in shallow water leaks.

The submerged filter bed device of the invention according to claim 2 is characterized in that waste water is pumped from one end into the filter bed main body which is buried underground and has both ends opened to leak water to be treated, and thereby the immersion filter bed device is provided with a submerged filter bed device. The treated water that has been catalytically oxidized by the filter media is discharged into the treated water pond, circulates through the treated water pond, is sucked into the filter bed body again together with the wastewater from the treated water leakage, and is circulated through the bed body from which the treated water leaks. A catalytic oxidation treatment is performed. Since the filter bed main body is laid down in the ground with its axial direction substantially horizontal, it can be buried shallowly in the ground, making it possible to reduce construction costs. Furthermore, since the filter bed body is buried underground, it does not become an eyesore.

Further, in the submerged filter bed device according to the third aspect of the invention, the length can be adjusted to suit the leakage of water to be treated by connecting a plurality of filter bed bodies.

The submerged filter bed device according to the invention described in claim 4 connects the connecting portions of the plurality of filter bed bodies with a flexible connecting member, so that the connecting portions can be bent arbitrarily to prevent leakage of water to be treated or the shape of underground water. Can be matched.

The submerged filter device according to the fifth aspect of the present invention has a flexible pipe body, so that it can be adapted to a complicatedly curved shape of a water leak to be treated or the shape of an underground structure.

(Embodiment) The configuration of an embodiment of the present invention will be described with reference to FIGS. 1 to 4.

In FIG. 3 and FIG. 4, one Harutoko main body includes a tube body 2 with both ends open, a large number of string-like filter media 3 stretched in the axial direction within this tube body 2, and the tube body 2. The support frame 4 is provided at both end openings and supports both ends of the string-like filter medium 3.

The tube body 2 is formed of a hard synthetic resin tube, a flexible film tube such as a polyethylene film, a steel tube, a humid tube, a rubber tube, etc., and the openings at both ends of the tube body 2 have a lattice-like shape. The water-permeable support frames 4, 4 are removably fitted, and the space between the two support frames 4, 4 is held by a spacing tube 5, and a threaded rod 6 inserted into the tube 5.
Both ends of the support frames 4, 4 are projected outward from the center of the support frames 4, 4, and are tightened with nuts 7.7, so that the support frames 4,
4 is fixed.

Furthermore, a large number of string-like filter media 3 having a large number of ring-shaped fuzz, fin-like, or needle-like protrusions are stretched around the support frames 4, 4 facing each other, and both ends of each filter media 3 are connected to the support frame. 4
, 4 are engaged with and held in engagement holes 8, 8 arranged at approximately equal intervals. The string-like filter medium 3 can also be shaped like a rod or a chain. As shown in FIGS. 1 and 2, a plurality of filter bed main bodies 1 are connected to each other as necessary to form a long body.

In FIGS. 1 and 2, reference numeral 9 denotes a circulation pump, which includes a submersible pump 11 having an inlet IO in the water, and this pump 11.
The ejector section 12 has one end connected to the ejector section 12, and an intake pipe 13 protrudes into the atmosphere from the ejector section 12. The other end of the ejector section 12 is connected to one end of the filter bed main body 1-.

In addition, when the pipe body 2 of the filter bed main body 1 is formed of a vinyl chloride pipe, as shown in FIG. 1. ] The ends of the tubes 2, 2 are inserted up to the annular stopper portion 17 in the center, and the outer periphery of the tube 2 and the inner periphery of the connector 16 are bonded and fixed with adhesive.

In addition, when the tubular body 2 is made of a steel pipe, as shown in FIG. 6, threaded portions 18. 18 by threading threaded portions 19° 19 on the outer peripheries of the ends of the adjacent tube bodies 2, 2, respectively.

Furthermore, when the tube body 2 is formed of a humid tube or the like, as shown in FIG. A steel band 21.2+ is elastically fitted to the outer periphery up to the position of the central annular stopper 20, and a steel band 21.2+ is fastened from the outer periphery of the elastic connector 1G to press the connector 16 to the outer periphery of the tubular body 2.2.

In addition, when the tubular body 2 is formed of a flexible tube such as rubber, as shown in FIG. , the extensions 22.22 of the adjacent tubes 2, 2 are elastically fitted onto the outer periphery of the rigid socket as the connector 16, and the tubes are inserted into the annular recess 23.23 at the outer periphery of the connector j6. Tighten the wire bands 24 and 24 from the outer periphery of the bodies 2, 2.

Further, if necessary, weights are provided at appropriate intervals as floating prevention means.

Next, the operation of this embodiment will be explained.

When the filter bed main body 1 connected along the length direction of the water oil 14 to be treated such as a sewage pond is immersed with the axial direction horizontal and the circulation pump 9 is operated, the sewage sucked from the suction port 10 of the pump 9 is immersed. The water to be treated is ejected toward the long continuous filter bed main body 1, and the air is sucked in from the ejector part 12, and the air is sent into the long continuous filter bed main body 1 on which the string-like filter media 3 is stretched. The filter bed body 1 is sufficiently catalytically oxidized and discharged as treated water into the treated water/oil 14 from the opening at the tip of the filter bed main body 1. Then, it passes through the outside of the first group of filter bed bodies and is again sucked into the suction port 10 of the pump 9, where it is circulated and subjected to continuous catalytic oxidation treatment.

In the above embodiment, the water and oil to be treated are constructed by constructing a large number of continuous filter bodies 1 in a substantially horizontal manner in a shallow and long sewage pond. Depending on the shape of the gutter, etc., only one filter bed body 1 or a plurality of filter bed bodies 1 may be connected.

Furthermore, if the tubular body 2 is made of a flexible elastic film such as polyethylene, it can be folded into a compact size for transportation, storage, etc.

Next, another construction example will be explained with reference to FIG.

The filter bed main body 1 is laid down and buried in the ground along one side of the blisters 14 to be treated with the axial direction being substantially horizontal. Both ends of the filter bed main body 1 are opened into the water leak 14 to be treated, and a circulation pump 9 having an ejector part 12 is provided at one end of the filter bed main body 1.
are connected. An intake pipe 13 projects from the ejector portion 12 into the atmosphere.

When the circulation pump 9 is operated, air is sucked into the filter bed main body 1 along with water to be treated such as sewage, oxidized by contact, and circulated between the filter bed main body 1 and the water bubbles 14 to be treated.

In this case, the filter bed main body 1 does not become an eyesore, and since it is buried shallowly, the construction cost is high (1°).In addition, in the above embodiment, the filter bed main body 1 is We have explained the method of construction by immersing the filter bed body 1 in the water leakage 14 to be treated (position A) and the construction method of burying the filter bed body 1 underground (position B). 1 to the water surface position (C position) of the blisters 14 to be treated as shown in FIG. It is also possible to carry out construction as appropriate, such as by immersing it in the water leak 14 and installing it halfway above the ground surface (position D).

Furthermore, in the above embodiment, air was supplied by taking in air from the ejector part 12 through the intake pipe 13, but as shown in FIG. Additionally, air can be supplied by connecting an aeration pipe 28 connected to an air supply pipe 27 of an air pump 26 such as a compressor or a blower.

〔Effect of the invention〕

According to the invention as set forth in claim 1, by simply inserting the bed body made of the pipe body and string-like filter medium into the water to be treated such as a sewage pond, there is no need to particularly construct a structure for supporting the filter bed. There is no
Water treatment can be easily carried out, and in particular, catalytic oxidation treatment can be easily carried out even on water bubbles to be treated in shallow water depths, which was previously impossible, by using the filter bed body in a lying position.

In addition, since the string-like filter medium is stretched inside the tube, there is no leakage in the circulation path between the blisters to be treated, and reliable treatment is possible.Also, a circulation pump is connected to one end of the filter bed body for forced circulation. Even if the packing density of the filter media is increased, the sludge's Seltsculin function works and complete treatment is possible, especially when the pipe body is flexible or when a connector connecting multiple filter bed bodies is used. If it is flexible, it can be adapted to the structure of the water bubbles to be treated even if it has an irregular shape, and the existing sewage tank can be used as a contact oxidation tank, allowing easy and economical water treatment. It is something that can be done.

Further, according to the invention as set forth in claim 2, by burying and installing the filter bed main body underground along the blisters to be treated, the filter bed main body does not become an eyesore and is substantially buried underground. Because it is buried horizontally and shallowly, construction costs are low.

[Brief explanation of the drawing]

Fig. 1 is an explanatory side view showing the construction state of the filter bed main body of the immersion filter bed of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a vertical side view of the same filter bed main body, and Fig. 4 is the same filter material. Figures 5 to 8 are longitudinal side views showing different embodiments of the connecting parts of the Harutoko main body, and Figure 9 shows the construction state in which the Harutoko main body is buried underground. Fig. 10 is an explanatory diagram showing various installation positions of the Harutoko main body, Fig. 11 is a plan view showing the construction state in which the Harutoko main body is placed on the ground, and Fig. 12 is an explanatory diagram showing various installation positions of the Harutoko main body. It is a side view which shows the construction state of the immersion filter main body of an Example. 1. Filter bed body, 2. Tube body, 3. String filter material, 9.
Circulation pump, 14. Water bubbles to be treated, 16. Connector.

Claims (5)

[Claims] (1) A submerged filter bed body consisting of a pipe body and a string-like filter material stretched in the pipe body so that water can flow in the axial direction, and immersed in a water pond to be treated in a substantially horizontal state in the axial direction; comprising a circulation pump connected to one end of the filter bed body, which sends the water to be treated in the water pond to be treated to the body of the filter bed together with air, and forcibly circulates the water to be treated between the body of the filter bed and the water pond to be treated; An immersion filter device featuring: (2) It consists of a pipe body and a string-like filter material stretched in the pipe body so that water can flow in the axial direction, and is buried in the ground near the water pond to be treated with the axial direction being approximately horizontal. A submerged filter body is connected to one end of the filter bed body and is connected to one end of the filter bed body, and the water to be treated in the water pond to be treated is sent to the filter body together with air, and the water to be treated is connected to the filter bed body and the body to be treated. An immersion filter device characterized by comprising a circulation pump for forced circulation in a water pond. (3) The submerged filter bed device according to claim 1 or 2, characterized in that a plurality of filter bed bodies are airtightly connected in the axial direction. (4) The submerged filter bed apparatus according to claim 3, wherein the plurality of filter bed bodies are airtightly connected by a flexible connector. (5) The immersion filter device according to any one of claims 1 to 3, wherein the pipe body is flexible.