JP2001047075A - Waste water cleaning apparatus and washing machine using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rapidly remove a detergent and contaminant components in waste water in large quantities by enclosing particles in a cleaning container and supporting a reaction accelerating member on the surfaces of the particles and enclosing a substance containing humus in the cleaning container or in the region on the upstream side of the cleaning container. SOLUTION: In a case adapted to a washing machine, a three-way valve 71 is provided to a drain pipe 5' for discharging water in a washing tube 2 and a waste water cleaning apparatus 6 is provided to one side of the three-way valve. The waste water cleaning apparatus 6 consists of a cleaning container 6a for temporarily storing waste water, the drain pipe 5' connected to the inflow port of the cleaning container 6a and a drain pipe 10 connected to the discharge port of the cleaning container 6a. Porous particles 9 having a reaction accelerating member such as microorganisms, enzymes or a catalyst fixed thereon and humus 101 are enclosed in the cleaning container 6a in a form wrapped in a water permeable member 22. When waste water flows in the waste water cleaning apparatus 6 from the drain pipe 5', the porous particles 9 and the humus 101 adsorb the detergent and contaminant components in waste water accompanied by the flow of waste water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste water purification apparatus, and more particularly to a waste water purification apparatus applicable to a washing machine, a dishwasher, a kitchen sink, and the like.

[0002]

2. Description of the Related Art Currently, the sewerage penetration rate is low, and there are strict regulations on human waste disposal, but there are no sufficient regulations on domestic wastewater such as washing drainage, bath water, and kitchen drainage. For this reason, it is said that domestic wastewater may be the main cause of eutrophication of rivers and lakes.

[0003] In the above-mentioned social background, there have been proposed some techniques relating to a drainage purification device for a washing machine.

Among them, Japanese Patent Laid-Open Publication No. Hei 5-345095 proposes a structure in which a ceramics filling portion surrounded by a net and a drainage bypass portion are provided inside a drainage purification device. This is intended to prevent clogging of the waste water purification device due to lint or the like in the waste water.

In addition, Japanese Unexamined Patent Publication (Kokai) No. 6-126090 discloses a wastewater treatment method in which wastewater from a washing machine is foamed by foaming means, and the bubbles are broken to collect a surfactant-containing liquid. ing. Japanese Patent Application Laid-Open No. 6-47189 discloses a filter unit having a microfiltration membrane for filtering solid fine particles contained in washing water or rinsing water, an activated alumina for adsorbing and purifying a surfactant, and an activated alumina for the same. There has been proposed a washing unit having a suction unit provided with a heater for heating water to decompose a surfactant and regenerating activated alumina, and a circulation pump for circulating washing water or rinsing water.

[0006] In Japanese Patent Application Laid-Open No. 8-206392, a particulate adsorption filter is sealed in a drainable purifying device of a washing machine in a flowable state in a container so as to enhance the adsorption effect of the filter, and is adsorbed by ultrasonic waves. It is disclosed to decompose organic matter.

[0007]

In the above-mentioned prior art, the speed at which detergent components and dirt components in waste water are trapped or decomposed is not sufficient.
It has been difficult to maintain stable performance over the long term.

[0008] It is an object of the present invention to increase the rate of adsorption of dirt components from the drainage body to the surface of the porous particles, to efficiently recover detergent components and dirt components from wastewater circulating in large amounts, and to prevent the time for washing. Decompose them efficiently into bands,
It is an object of the present invention to provide a wastewater purification device capable of maintaining these performances for a long period of time.

[0009]

The above object can be achieved by the following means.

1) Porous particles for trapping detergent components and dirt components in the wastewater are caused to flow by the incoming wastewater.

2) A reaction promoting member such as a microorganism, an enzyme or a catalyst is previously supported on the surface of the porous particles described in 1).

3) Wrap the porous particles with a water-permeable member.

4) A substance containing humus and microorganisms is sealed in or upstream of the wastewater purification device.

[0014]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a schematic sectional view of a washing machine according to one embodiment of the present invention.

In FIG. 1, a washing machine includes a housing 1 and a housing 1.
A washing tub 2 provided therein, a stirrer 3 provided in the washing tub 2, a motor 4 for rotating the washing tub or the stirrer,
It comprises a water pipe 5 for draining water and the like in the washing tub 2. In the present embodiment, a three-way valve 71 is provided in the water distribution pipe 5, and a drainage purification device 6 is provided on one side of the three-way valve. The drainage purifying device 6 is installed below the washing tub 2.
The water inside the water flows down by gravity and flows into the wastewater purification device 6. The drainage purification device 6 includes a purification vessel 6a for temporarily storing wastewater, a drainage pipe 5 connected to an inlet for flowing wastewater into the purification vessel 6a, and a drainage pipe connected to an outlet for discharging purified water. Consists of ten. Purification container 6
A porous particle 9 and a humus 101 are enclosed in a water-permeable member 22 in a.

According to Tatsuyoshi Ishiguro's latest deodorization technology collection (pp. 387-392 (1997), NTT), the humus 101 refers to most of the organic matter in the soil. The bodies of plants and animals are subjected to the action of microorganisms and small animals in the soil over a long period of time, undergoing decomposition and polycondensation, and eventually chemically react with carbon dioxide CO2, water H2O, and ammonia NH3. It is a stable dark, amorphous mixture of high molecular weight polymers.

This humus 101 has a pH buffering action,
Generally neutralizes basic washing wastewater. Humus 10
First, since various microorganisms inhabit from the beginning, purification of wastewater can be promoted. Furthermore, humus 101
The microorganisms propagate and diffuse in the wastewater and the porous particles 9 and settle inside the purification vessel 6.

Microorganisms, enzymes or catalysts (hereinafter collectively referred to as reaction promoting members) are immobilized on the porous particles 9.
It is desirable that the reaction promoting member specifically decomposes a detergent component and a soil component. Examples of the material of the porous particles 9 include activated carbon, alumina, and silica gel. However, even particles that are not necessarily porous, such as sand, can be used as long as they are suitable as the base material of the reaction promoting member. In the present embodiment, a three-way valve 71 is installed in the drain pipe 5s immediately below the washing tub 2, and the first drain containing high-concentration detergent components and dirt components is sent to the purification vessel 6a via the drain pipe 5 '. It is introduced and discharged from a drain pipe 10 connected to a drain port. on the other hand,
The three-way valve 71 can be switched so that the drainage water for the second and subsequent rinsing flows out directly through the drainage pipes 72 and 73 of the branch. In this figure, the inflow port is provided in the lower part of the purification vessel 6a, and the drain port is provided in the upper part of the purification vessel 6a. Also, at the connection of the drain pipe 10 on the drain port side,
By providing the obstacle member 23 serving as a filter, the porous particles 9
Is prevented from flowing out together with the water-permeable member 22.

When waste water flows into the waste water purifying device 6 from the drain pipe 5 ', the porous particles 9 and the humus 101 wrapped in the water permeable member 22 form detergent components and dirt components in the waste water as the waste water flows. To adsorb. Then, the purified wastewater flows out from the drain pipes 10, 73. The components adsorbed by the porous particles 9 and the humus 101 are decomposed by the reaction promoting member on the surface of the porous particles 9 during the time when washing is not performed, and flow out from the drain pipes 10 and 73 together with drainage in the next washing. . Since the porous particles 9 flow, the diffusion resistance in the adsorption of the detergent component and the dirt component to the porous particles 9 is reduced as compared with the case where the porous particles 9 are filled.

In this figure, the flow of the waste water is switched using the three-way valve 71. However, when the purification vessel 6a is filled with the waste water, the waste water is purified using the float valve instead of the three-way valve 71. The flow into the device 6 may be stopped. Although the above description has been made on the assumption that the washing machine is a fully automatic washing machine, the present invention is not limited to the fully automatic washing machine, but can be applied to other washing machines such as a two-tub washing machine. In the case of the two-tank type, the wastewater is allowed to flow into the wastewater purification device 6 during the washing operation,
During the rinsing operation, a three-way valve 7
1 should be controlled.

Although it has been described that the wastewater is introduced into the wastewater purifying apparatus 6 using gravity, in the case of a washing machine having a built-in water supply pump, the wastewater is purified using the water supply pump. It is also possible to introduce it into the device 6. In this case, the installation position of the drainage purification device 6 is not limited to below the washing tub 2, but can be installed in a space or the like near the side surface of the housing 1. The pump is not limited to the use of a water supply pump, and may be provided with a dedicated pump for introducing wastewater into the wastewater purification device 6.

Some types of detergents or bleaching agents deactivate or degrade the reaction accelerating member. If this is known in advance, an operation means for controlling the three-way valve 71 so that the wastewater does not flow into the wastewater purification device may be provided on the operation panel, or the three-way valve may be detected by detecting the corresponding reaction inhibitor. It is desirable to add an inhibitory substance detecting means for controlling the valve 71.

In order to supply or replenish the reaction accelerating member, it is also effective to previously mix the reaction accelerating member with a detergent or to provide a reaction accelerating member adding means for separately injecting the reaction accelerating member into washing water or waste water. It is a target. The timing for adding the reaction promoting member to the wastewater is not particularly limited, and may be any of before washing, during washing, during drainage, during rinsing, during dehydration, or during operation stop.

FIG. 2 is an enlarged sectional view of the waste water purifying apparatus 6 of FIG. In this embodiment, a suction pump 51 is provided upstream of the drain pipe 5. The suction pump 51 includes a drain pipe 52
A negative pressure is generated using the flow of wastewater passing through
3 is a structure for sucking air. The air mixed with the wastewater has the effect of forming bubbles and concentrating detergent components and soil components. From the relation with the water level of the drainage,
It is necessary to extend to near the top of the washing tub. Also,
In this embodiment, a heater 54 is provided on the bottom surface of the purification vessel 6a. The heater 54 is used to maintain a temperature at which the reaction promoting member fixed to the porous particles 9 easily acts. The installation position of the heater 54 is not limited to this figure, and may be anywhere as long as heating can be performed efficiently. Further, if there is a risk that the reaction proceeds excessively and the temperature rises to deactivate the reaction promoting member, a water-cooled heat exchanger may be provided or a cooling element such as a Peltier element may be provided. desirable.

FIG. 3 is an enlarged sectional view of a waste water purifying apparatus showing another embodiment of the present invention. In the present embodiment, the purification container 6a
Is provided with a light source 171. A photocatalyst is carried on the porous particles 9, the water-permeable member 22, the inner wall of the purification vessel 6a, and the like, and organic substances in the wastewater can be decomposed by the photocatalysis. In addition, the porous particles 9 or the humus 10
In the case where a microorganism utilizing light such as a photosynthetic bacterium exists in (1), the action of purifying wastewater can be promoted. Light source 17
Although the position of 1 is installed in the upper part of the purification container 6a in this figure, it is not particularly limited.

In this figure, an inflow port is provided at the upper part of the purification vessel 6a and the drain pipe 5 is connected. However, the water flow reaches the bottom of the purification vessel 6a and the porous particles 9 and the humus 101
Can be made to flow.

FIG. 4 is an enlarged sectional view of a waste water purifying apparatus showing another embodiment of the present invention. The drainage flows into the lower part of the purification vessel 6a via the drainage pipe 5 and flows out from the upper drainage pipe 10. In this embodiment, no heater or light source is installed inside the purification container 6.

The embodiment shown in FIGS. 2 to 4 has a structure for purifying wastewater anaerobically.

FIG. 5 is an enlarged sectional view of a waste water purifying apparatus showing another embodiment of the present invention. In this embodiment, as in FIG.
A water-permeable member 22 containing the humus 101 is sealed inside the purification vessel 6a. In addition, the column 11 is provided with a mesh part 121 at the bottom so that the wastewater can flow.
1 is filled with humus 112. The upper surface of the column 111 is sealed. In this embodiment, the purification container 6
An air dispersing member 61 is installed at the lower part of a, and air is introduced through a pipe 62 to generate bubbles 63. Thereby, a part of the air from the air dispersion member 61 stays inside the column 111. In the figure, reference numeral 114 denotes air retained in the column 111. Since the humus 112 has a portion immersed in the wastewater and a portion that comes into contact with the air, the anaerobic bacteria and the aerobic bacteria easily propagate in the respective portions.

FIG. 6 shows another embodiment. In comparison with FIG. 5, in the present embodiment, the drain pipe 10 is installed at the upper side of the drain purification device 6. Further, the air distribution member 61 shown in FIG. 5 is not provided. In the case of this embodiment, the humus 11
In order to constantly supply air to 2, it is necessary to provide an air hole 122 on the upper surface of the column 111. When performing anaerobic treatment, it is not necessary to provide an air hole.

FIG. 7 shows another embodiment. Compared with FIG. 6, in the present embodiment, the porous particles 1
13 and the upper part of the column 111 is filled with humus 112. The porous particles 113 are
It is not always necessary that the porous particles 9 are of the same type.

FIG. 8 shows still another embodiment. In comparison with FIG. 7, in the present embodiment, the humus 1
12 and the porous particles 113 are mixed and filled. Further, the water permeable member 22 shown in FIGS.
The humus 101 put in the container is not enclosed. Even in such a configuration, the microorganisms contained in the humus 112 in the column 111 diffuse through water and settle on the surface of the porous particles 9.

In the above embodiments, the description has been made on the assumption that the washing machine is used. However, the waste water purifying apparatus according to the present invention is applied to various devices that generate waste water, such as a dishwasher, a kitchen sink, a disposer, and a car washing device. It is possible.

FIG. 9 and FIG. 10 are views schematically showing a partially enlarged cross section of the above-mentioned porous particles 9. FIG. 9 shows macropores 203 existing on the surface of the porous particles 9, and FIG.
0 is an enlarged view of the portion 204 in FIG.

As shown in FIG. 9, a porous particle 9 has a solid phase 201 and a macropore 203 inside an apparent surface 202.
have. The diameter of the macro hole 203 is approximately 1-1.
00 μm. Further, as shown in FIG. 10, a meso hole 211 is provided on a wall surface of the macro hole 203, and a micro hole 212 is provided on a wall surface of the meso hole 211. The microorganism 213 inhabits the wall surface of the macropore 203. On the other hand, the meso hole 211
The micropores 212 cannot contain microorganisms on the order of microns. However, the mesopores 211 and the micropores 212 adsorb and concentrate substances that serve as nutrients for microorganisms, providing an environment in which microorganisms can propagate more easily than water. As described above, the inside of the porous particles 9 has a structure in which the detergent component and the dirt component are accumulated and decomposed and purified.

[0036]

According to the present invention, since the porous particles enclosed in the wastewater purifying device flow, the detergent component and the dirt component are removed from the porous particles in comparison with the case where the porous particles are filled and fixed. Can reduce the diffusion resistance in the adsorption of water. Therefore, a large amount of detergent components and dirt components in the wastewater can be promptly removed, and the environmental load due to the wastewater can be reduced.

Further, according to the present invention, the humus can be used as a wastewater with p
By adjusting H, it is possible to form conditions under which microorganisms can easily propagate. The humus serves as a source of various microorganisms in wastewater and porous particles.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a washing machine showing one embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of the drainage purification device 6 of FIG.

FIG. 3 is an enlarged sectional view of a waste water purifying apparatus showing another embodiment of the present invention.

FIG. 4 is an enlarged sectional view of a waste water purifying apparatus showing another embodiment of the present invention.

FIG. 5 is an enlarged sectional view of a waste water purifying apparatus showing another embodiment of the present invention.

FIG. 6 is an enlarged sectional view of a waste water purifying apparatus showing another embodiment of the present invention.

FIG. 7 is an enlarged sectional view of a waste water purifying apparatus showing another embodiment of the present invention.

FIG. 8 is an enlarged sectional view of a waste water purifying apparatus showing another embodiment of the present invention.

FIG. 9 is a diagram schematically showing a partially enlarged cross section of a porous particle 9;

FIG. 10 is a partially enlarged schematic diagram of FIG. 9;

[Description of Signs] 1 ... housing, 2 ... washing tub, 3 ... stirrer, 4 ... motor, 5 ...
Drain pipe, 6: Exhaust purification device, 9: Porous particles, 10: Drain pipe, 22: Water-permeable member, 23: Obstacle member, 51: Suction pump, 52: Drain pipe, 53: Pipe, 54: Heater, 61 …
Air dispersing member, 62: tube, 63: bubble, 71: three-way valve, 101, 112: humus, 111: column, 113
... porous particles, 121 ... mesh part, 171 ... light source, 2
01: solid phase, 202: apparent surface, 203: macropore, 211: mesopore, 212: micropore, 213: microorganism.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E03C 1/184 E03C 1/184 F-term (Reference) 2D061 DA04 DE21 3B155 AA18 BA06 FC02 FC06 FC09 4D003 AA12 AB01 BA02 BA06 CA08 DA01 DA07 DA18 DA28 DA30 EA01 EA06 EA19 EA22 EA25 FA04 FA06 4D024 AA04 AB04 BA01 BA02 BA13 BB01 BC05 CA02 CA05 DB14 DB16 DB29 4D040 AA34 BB51 BB82

Claims (4)

[Claims] 1. A wastewater purifying apparatus having a purifying vessel provided with an inflow port into which wastewater flows and a drainage port for discharging purified water, wherein particles are sealed inside the purifying vessel, and the particles are discharged to the surface of the particles. A wastewater purification apparatus characterized by carrying a reaction promoting member for decomposing a detergent component or a dirt component, and enclosing a substance containing humus inside or upstream of the purification container. 2. A waste water purifying apparatus comprising a purifying container having an inlet into which waste water flows and an outlet through which the waste water flows out, wherein particles are sealed inside the purifying container, and a detergent component in the waste water is provided on the surface of the particles. Alternatively, a wastewater purification apparatus characterized by carrying a reaction accelerating member for decomposing dirt components, filling a substance containing humus inside or upstream of the wastewater purification container, and anaerobically treating wastewater. 3. A wastewater purifying apparatus comprising a purifying container having an inlet into which wastewater flows in and an outlet through which wastewater flows out, wherein particles are sealed in the purifying container, and the surface of the particles has a detergent in the drainage. Carrying a reaction accelerating member for decomposing components or dirt components, enclosing a substance containing humus inside or upstream of the wastewater purifying vessel, and a part where the humus is immersed in wastewater and a part that comes into contact with air And a waste water purification device, wherein the waste water purification device is disposed so as to coexist. 4. A washing machine provided with a washing tank housed in a housing and a discharge pipe for discharging water after washing, wherein the discharge pipe has a three-way valve, and one side of the three-way valve is directly connected to the washing machine. A drain pipe connected to the outside of the washing machine, and a washing machine provided with a waste water purifying device in which a substance containing corrosive substance is sealed in a purification container on the other side.