Water treatment apparatus

Abstract

To prevent a decrease in the temperature of a water stored in a biological treatment tank compared to a case where an air pump sucks in cold outside air and sends a sucked air into the biological treatment tank.SOLUTION: A water treatment apparatus includes a biological treatment tank for biological treatment of treated water, an air pump that sucks in ambient air and feeds the sucked air into the biological treatment tank, and an enclosure member that surrounds an electrical apparatus area where the air pump is located.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a water treatment device. [Background technology]

[0002] Patent Document 1 describes a water treatment device as a water pressurizing device. This water treatment device is equipped with a sprayer at the discharge port of the water supply unit, and is also equipped with an air intake port and a ventilation port for ventilating the air in the water tank, so that the supply water is sprayed into the water tank. Specifically, an air pump or a blower is provided, and the outside air is forced into the water tank to ventilate the water tank. [Patent Document 1] JP 2005-2674 A Summary of the Invention [Problem to be solved by the invention]

[0003] Conventionally, an air pump that sends air into a storage tank in which water is stored is arranged so as to be exposed to the outside air. When the storage tank is a biological treatment tank for biological treatment, the temperature of the water in the biological treatment tank needs to be kept in the range of, for example, 25°C to 35°C. In this case, when the air pump sucks in cold outside air and sends the sucked air into the biological treatment tank, the temperature of the water stored in the biological treatment tank may drop.

[0004] The objective of the present disclosure is to prevent a drop in the temperature of water stored in a biological treatment tank, compared to when an air pump sucks in cold outside air and sends the sucked air into a biological treatment tank. [Means for solving the problem]

[0005] The water treatment device of the first aspect of the present disclosure is characterized by comprising a biological treatment tank for biologically treating the water to be treated, an air pump for drawing in surrounding air and sending the drawn-in air to the biological treatment tank, and an enclosing member for surrounding an electrical equipment area in which the air pump is located.

[0006] According to the above-mentioned embodiment, the air pump draws in air that has been heated in the electric equipment area surrounded by the enclosing member, and sends the drawn-in air to the biological treatment tank. Specifically, the air pump and the electric equipment arranged in the space surrounded by the enclosing member are operated to heat the air in the space, and the air pump draws in the heated air and sends it to the biological treatment tank. Therefore, warm air is sent to the biological treatment tank, which needs to be kept in the range of 25°C to 35°C in order to biologically treat the water to be treated, and the water temperature in the biological treatment tank can be kept at a suitable level even when the water treatment device is arranged so as to be exposed to the outside air.

[0007] In this way, compared to when an air pump sucks in cold outside air and sends it to the biological treatment tank, it is possible to prevent the temperature of the water stored in the biological treatment tank from decreasing, and to steadily promote decomposition by microorganisms. In addition, it is possible to reduce the consumption of energy required to heat the biological treatment tank to maintain an appropriate temperature.

[0008] A water treatment device according to a second aspect of the present disclosure is the water treatment device according to the first aspect, characterized in that the air pump is disposed at the same height as or above the electrical equipment area in the height direction.

[0009] According to the above-mentioned embodiment, the air pump is disposed at the same height as or above the electric equipment area, so that the air pump can suck in warm air and send the warm air to the biological treatment tank, as compared to the case where the air pump is disposed below the electric equipment area.

[0010] A water treatment device according to a third aspect of the present disclosure is characterized in that in the water treatment device according to the first or second aspect, the electrical equipment area is disposed in an upper portion of the biological treatment tank.

[0011] According to the above-mentioned embodiment, the electric equipment area where the air pump is arranged is arranged in the upper part of the biological treatment tank. Here, the warm air rises. Therefore, compared to the case where the electric equipment area is arranged in the lower part of the biological treatment tank, the air pump can suck in the warm air and send the warm air to the biological treatment tank.

[0012] A water treatment device of a fourth aspect of the present disclosure is characterized in that, in the water treatment device of any one of the first to fourth aspects, a control unit for controlling the air pump is disposed in a lower portion of the electrical equipment area.

[0013] According to the above embodiment, the control unit that controls the air pump is located below the electrical equipment area. This not only serves to protect the control unit from heat in a small space, but also improves operability during maintenance and inspection, and workability during malfunctions and replacements by separating the electrical equipment area from the control unit area.

[0014] A water treatment device according to a fifth aspect of the present disclosure is the water treatment device according to the fourth aspect, characterized in that the control unit is located close to the biological treatment tank.

[0015] According to the above embodiment, the control unit is located close to the biological treatment tank. As a result, compared to when the control unit and the biological treatment tank are separated by an air layer, the control unit is close to the biological treatment tank, which is preferably maintained at a constant temperature, and is therefore less susceptible to temperature changes caused by the outside air, making it less likely to cause a breakdown. Furthermore, the control unit is easier to operate and work with for maintenance, inspection, and replacement. Effect of the Invention

[0016] According to the present disclosure, it is possible to prevent the temperature of the water stored in the biological treatment tank from decreasing, compared to when an air pump sucks in cold outside air and sends the sucked air into the biological treatment tank. [Brief description of the drawings]

[0017] [Figure 1]1 is an overall configuration diagram showing a water treatment device according to an embodiment of the present disclosure. [Diagram 2] 1 is a perspective view showing an external appearance of a water treatment device according to an embodiment of the present disclosure. [Diagram 3] FIG. 2 is a perspective view showing an electrical equipment area in a water treatment device according to an embodiment of the present disclosure. [Figure 4] FIG. 2 is a perspective view showing an electrical equipment area and a refill area in a water treatment device according to an embodiment of the present disclosure. [Diagram 5] FIG. 2 is a perspective view showing a refill area and a control area in a water treatment device according to an embodiment of the present disclosure. [Figure 6] FIG. 2 is a perspective view showing a refill area and a control area in a water treatment device according to an embodiment of the present disclosure. [Figure 7] FIG. 2 is a perspective view showing a control region in the water treatment device according to the embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] An example of a water treatment device according to an embodiment of the present disclosure will be described with reference to Figures 1 to 7. In the drawings, arrow H indicates the up-down direction (vertical direction) of the device, arrow W indicates the width direction (horizontal direction) of the device, and arrow D indicates the depth direction (horizontal direction) of the device.

[0019] The water treatment device 12 is a device that circulates and purifies water to be treated that has been used, for example, in a home toilet, so that it can be reused in the toilet. First, a schematic configuration of the water treatment device 12 will be described. Note that the water treatment device can purify and reuse not only water to be treated that has been used in a toilet, but also water to be treated that has been used in a bath, washbasin, laundry, kitchen, etc., by biological treatment in the same way, but here, water to be treated that has been used in a toilet is shown as an example.

[0020] (Schematic configuration of water treatment device 12) As shown in FIG. 1, the water treatment device 12 is provided with a wastewater tank 100, a biological treatment tank 300, and a treated water tank 700.

[0021] The water to be treated used in the toilet 14, which is a water usage point, flows through the drainage tank 100, the biological treatment tank 300, and the treatment water tank 700 in this order, and is circulated to the toilet 14. Specifically, the water treatment device 12 is equipped with drainage piping 102 that connects the toilet 14 and the drainage tank 100, and the water to be treated produced in the toilet 14 is crushed and pumped, and sent to the drainage tank 100 through the drainage piping 102.

[0022] [Drain tank 100] 1, the drainage tank 100 is provided with a drainage water level gauge 104, a drainage agitation blower 106, and a drainage pump 110. Thus, the drainage water level gauge 104 detects the water level of the drainage tank 100, and the drainage agitation blower 106 sends air to the drainage tank 100, thereby agitating the water to be treated in the drainage tank 100.

[0023] The water treatment device 12 also includes a drainage pipe 302 that connects the drainage tank 100 and the biological treatment tank 300 . The drainage pump 110 that is driven sends the water to be treated from the drainage tank 100 to the biological treatment tank 300 through the drainage pipe 302 .

[0024] [Biological treatment tank 300] 1, the biological treatment tank 300 is provided with a drainage water level gauge 304, an agitation pump 316, and an ethanol injection device 318. Thus, the drainage water level gauge 304 detects the water level in the biological treatment tank 300. In addition, the agitation pump 316 agitates the water to be treated in the biological treatment tank 300.

[0025] The ethanol injector 318 has an ethanol bottle 320 and an ethanol injection pump 322. Thus, the ethanol injection pump 322 injects ethanol from the ethanol bottle 320 into the biological treatment tank 300. Ethanol is an example of an organic substrate.

[0026] The biological treatment tank 300 is also provided with a filtration membrane 324 and a membrane cleaning blower 326. The filtration membrane 324 and the treated water tank 700 are connected by a treated water pipe 732. The treated water pipe 732 is also provided with a treated water pump 734.

[0027] As a result, the driven treated water pump 734 passes the water to be treated in the biological treatment tank 300 through the filtration membrane 324. At this time, foreign matter is removed from the water to be treated. Furthermore, the water from which the foreign matter has been removed is sent as treated water to the treated water tank 700 through the treated water piping 732. Meanwhile, the membrane cleaning blower 326 sends air to the underside of the filtration membrane 324, causing air bubbles to rise in the water to be treated in the biological treatment tank 300 and cleaning the filtration membrane.

[0028] [Treatment tank 700] 1, the treatment water tank 700 is provided with a treatment water level gauge 704. Thus, the treatment water level gauge 704 detects the water level of the treatment water tank 700.

[0029] Furthermore, the treatment water tank 700 and the toilet 14 are connected by a supply pipe 756. A supply pump 758 is also provided on the supply pipe 756. As a result, when necessary, the supply pump 758 is driven to send treated water from the treatment water tank 700 through the supply pipe 756 to the toilet 14.

[0030] (Specific configuration of water treatment device 12) The water treatment device 12 includes a columnar housing 16 extending in the vertical direction of the device as shown in Fig. 2. Although the housing 16 in Fig. 2 has a rectangular columnar shape, the shape is not limited to this and may be a cylinder. The housing 16 is divided into three parts in the vertical direction of the device, and front covers 16a, 16b, and 16c that can be attached and detached using a tool are arranged in this order from top to bottom at the front side of the housing 16 in the device depth direction. The housing 16 further includes a pair of side covers 16d that covers the side of the portion where the front cover 16a is attached, and a pair of side covers 16e that covers the side of the portion where the front covers 16b and 16c are attached. The housing 16 also includes a ceiling cover 16f that covers the upper surface.

[0031] Inside the housing 16, there are provided an electrical equipment area 20a (see Figure 3) in which electrically powered electrical equipment is arranged, a supply area 20c (see Figure 4) for replenishing the chemical solution, and a control area 20d (see Figure 5) in which a control unit 54 that controls each part is arranged.

[0032] [Electrical Equipment Region 20a] The electric device area 20a is disposed in an upper portion of the water treatment device 12 in the device up-down direction, and is opened to the outside by removing the front cover 16a, the pair of side covers 16d, and the ceiling cover 16f. Note that Fig. 3 shows the water treatment device 12 with some of the covers cut away.

[0033] A plurality of electrical devices are attached to the electrical device area 20a as shown in Fig. 3. The electrical device area 20a will be described in detail later.

[0034] [Supply area 20c] As shown in FIG. 4, the supply area 20c is located in the vertical center of the water treatment device 12 and at the front side in the depth direction of the device, and is opened to the outside by removing the front cover 16b (see FIG. 2 and FIG. 4).

[0035] 4, the replenishing area 20c is provided with an ethanol bottle 320 of an ethanol injection device 318. The reason why the replenishing area 20c is not located in the upper part of the device in the vertical direction is that the organic matter such as the chemical (chlorine for disinfection) and ethanol is prevented from being deactivated due to the temperature rise in the housing caused by contact with warm air, or from being lost due to evaporation, etc. Furthermore, it becomes easier to control the concentration of the chemical (chlorine for disinfection) and organic matter such as ethanol by temperature management.

[0036] [Control area 20d] Control area 20d is located in the lower portion of water treatment device 12 in the vertical direction and in the front portion in the depth direction of the device, and is opened to the outside by removing front cover 16c (see Figs. 2 and 4). Fig. 4 shows water treatment device 12 with front covers 16a, 16b, 16c and a pair of side covers 16d removed.

[0037] A protective case 50 is provided in the control area 20d, as shown in Fig. 5. The protective case 50 is provided with a lid 50a, and when the lid 50a is opened, the control unit 54 disposed inside the protective case 50 is exposed to the outside, as shown in Fig. 6. Furthermore, the control unit 54 is adjacent to the biological treatment tank 300 (see Fig. 1) via the protective case 50.

[0038] The control unit 54 is provided with a lid 54a. When the lid 54a is opened, as shown in FIG. 7, a plurality of control boards 56 on which semiconductor chips and the like are mounted are arranged.

[0039] (Main configuration of water treatment device 12) Next, the electrical equipment arranged in the electrical equipment area 20a will be described.

[0040] The electrical device area 20a is surrounded by a front cover 16a, a pair of side covers 16d, and a ceiling cover 16f, as shown in Fig. 2. The front cover 16a, the pair of side covers 16d, and the ceiling cover 16f are examples of surrounding members.

[0041] 3, the drainage agitation blower 106 and the membrane cleaning blower 326 are attached to the electric equipment area 20a and arranged side by side in the width direction of the device. The drainage agitation blower 106 and the membrane cleaning blower 326 are arranged in the upper part of the electric equipment area 20a. Here, the upper part of the electric equipment area 20a is the part above the center part of the electric equipment area 20a in the vertical direction of the device. The membrane cleaning blower 326 is an example of an air pump.

[0042] In this configuration, the membrane cleaning blower 326 sucks in air from the electrical equipment area 20a and sends the sucked air to the biological treatment tank 300. Here, the temperature of the water to be treated in the biological treatment tank 300 needs to be kept between 25°C and 35°C in order to biologically treat the water to be treated.

[0043] (summary) As described above, in the water treatment device 12, the membrane cleaning blower 326 sucks in air from the electric equipment area 20a and sends the sucked air to the biological treatment tank 300. Specifically, the membrane cleaning blower 326 is warmed by the operation of the membrane cleaning blower 326 etc., sucks in air from the electric equipment area 20a, and sends the sucked air to the biological treatment tank 300. For this reason, warm air is sent to the biological treatment tank 300, which needs to be kept at a temperature of 25°C or higher and 35°C or lower.

[0044] This makes it possible to prevent the temperature of the water stored in the biological treatment tank 300 from decreasing, compared to when an air pump sucks in cold outside air and sends the sucked air to the biological treatment tank.

[0045] In the water treatment device 12, the membrane cleaning blower 326 is disposed in the upper part of the electric equipment area 20a. Therefore, compared to the case where the membrane cleaning blower 326 is disposed in the lower part of the electric equipment area, the membrane cleaning blower 326 can suck in warm air and send the warm air to the biological treatment tank 300.

[0046] In the water treatment device 12, the electric equipment area 20a in which the membrane cleaning blower 326 is arranged is arranged in the upper part of the housing 16 of the water treatment device 12. Here, warm air rises. Therefore, compared to the case in which the electric equipment area is arranged in the lower part of the housing of the water treatment device, the membrane cleaning blower 326 can suck in warm air and send the warm air to the biological treatment tank 300.

[0047] In the water treatment device 12, a control unit 54 that controls the electrical equipment arranged in the electrical equipment area 20a is arranged below the electrical equipment area 20a. As a result, the air heated by the control unit 54 rises and remains in the electrical equipment area 20a. Therefore, compared to the case where the control unit is arranged above the electrical equipment area, the membrane cleaning blower 326 can suck in the warm air and send the warm air to the biological treatment tank 300.

[0048] Furthermore, in the water treatment device 12, the control unit 54 is located close to the biological treatment tank 300. As a result, compared to a case in which the control unit and the biological treatment tank are separated by an air layer, the biological treatment tank 300 is heated by the heat generated by the control unit 54, and a drop in the temperature of the water in the biological treatment tank 300 can be suppressed.

[0049] Although the present disclosure has been described in detail with respect to a specific embodiment, it is clear to those skilled in the art that the present disclosure is not limited to the embodiment, and various other embodiments are possible within the scope of the present disclosure. For example, in the above embodiment, the water treatment device 12 is a device that circulates and purifies the treated water used in a home toilet, making it reusable in the toilet, but by increasing or enlarging the drainage tank and the treated water tank and increasing the purification process, the water treatment device may be used for the treated water used in the home, not the treated water used in the toilet. Specifically, as an example, the water treatment device can purify and reuse the treated water used not only in the toilet, but also in the bath, washbasin, laundry, kitchen, etc., by biological treatment.

[0050] In the above embodiment, the membrane cleaning blower 326 is disposed in the upper part of the electric equipment area 20a, but may be disposed in the lower part. However, in this case, the effect of disposing the membrane cleaning blower in the upper part of the electric equipment area 20a may not be achieved.

[0051] In the above embodiment, the electrical equipment area 20a is disposed in the upper part of the housing 16 of the water treatment device 12, but it may be disposed in the center or lower part of the housing. In this case, however, the effect of disposing the electrical equipment area 20a in the upper part of the housing 16 may not be achieved.

[0052] In the above embodiment, the control unit 54 for controlling the electrical devices arranged in the electrical device area 20a is arranged below the electrical device area 20a, but the control unit may be arranged to the side of the electrical device area 20a. In this case, however, the effect of arranging the control unit 54 below the electrical device area 20a is not achieved.

[0053] Although not specifically mentioned in the above embodiment, when air is sent into the drainage tank by the drainage agitation blower, warmed air may be sent in similarly. [Explanation of symbols]

[0054] 12 Water treatment equipment 16a Front cover (an example of an enclosing member) 16d Side cover (an example of an enclosing member) 16f Ceiling cover (an example of an enclosure material) 20a Electrical Equipment Area 54 Control Unit 300 Biological treatment tank 326 Membrane cleaning blower (an example of an air pump)

Claims

1. A biological treatment tank for biologically treating the water to be treated; An air pump that draws in surrounding air and sends the drawn air to the biological treatment tank; an enclosure member that surrounds an electrical equipment area in which the air pump is disposed; A water treatment device comprising:

2. The air pump is disposed at the same height as or above the electrical equipment area in the height direction. The water treatment device according to claim 1 .

3. The electrical equipment area is disposed in an upper portion of the biological treatment tank. The water treatment device according to claim 1 .

4. A control unit for controlling the air pump is disposed in the lower portion of the electrical equipment area. The water treatment device according to claim 1 .

5. The control unit is adjacent to the biological treatment tank. The water treatment device according to claim 4.

Images