JPH0259397B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for treating waste water discharged from bathhouses and the like.

[Prior Art] In bathhouses and the like, waste hot water is introduced into a waste water treatment device consisting of a waste water heat recovery tank, where the heat of the waste water is taken into bath water to warm the bath water. However, since waste hot water contains floating contaminants such as hair, dirt, soap and shampoo foam, when this flows into the waste water heat recovery tank, the heat exchanger installed in the tank The above-mentioned filth adheres to the water, reducing the heat exchange efficiency and impairing the flow of the waste hot water, which has the disadvantage of further increasing the heat loss of the waste hot water. Furthermore, since the heat exchanger is made of a copper plate or the like, there is a drawback that if the dirt adheres to the heat exchanger, it causes corrosion of the heat exchanger.

For this reason, the waste water heat recovery tank must be cleaned every day, but due to the above-mentioned filth mixed into the waste water, there is a strong odor during cleaning, and since it is usually installed in the open air, the work is slow during rainy days. There were various problems associated with cleaning work, such as leprosy.

For this reason, in the past, waste water heat recovery tanks were often not cleaned every day, resulting in problems such as a decrease in heat exchange efficiency and corrosion of the heat exchanger.

[Problems to be Solved by the Invention] The present invention solves the above-mentioned drawbacks, aims at high efficiency recovery of waste water heat, and aims at preventing corrosion of the heat exchanger.
Furthermore, it is an object of the present invention to provide a waste water treatment device that allows the waste water heat recovery tank to be cleaned simply and easily.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a receiving tank section which is connected to a sink and is also connected to a sewer ditch by a removable stopper provided at the bottom, and the receiving tank section. The heat exchange tank section is divided into a plurality of chambers that communicate with each other, and each chamber is connected to a sewer drain by a removable plug provided at the bottom.
In addition, each chamber is provided with a heat exchanger made of a high heat conductor such as a copper plate, and the heat exchangers are connected to each other, and a waste water heat recovery tank is connected to a water source on one side and a boiler on the other side. In a waste water treatment device, a plug body made of a pipe body having a through hole is removably fixed to the receiving tank part, the pipe body is formed at approximately the same height as the inflow water level of the waste hot water at all times, and the pipe body A waste hot water treatment device is provided, characterized in that a notch is provided at the waste hot water inflow site at the top of the body, and a gas diffuser connected to a compressor is provided at the bottom of the heat exchange tank.

[Example] A waste hot water treatment apparatus according to the present invention will be constructed based on an example shown in the drawings.

The waste water treatment device consisting of the waste water heat recovery tank 1 is a rectangular parallelepiped tank with an open top, and a receiving tank part 3 partitioned by a fixed or removable partition plate 2 is formed at one end, and the remaining part is a rectangular parallelepiped tank with an open top. A heat exchange tank section 4 is formed. The receiving tank 3 is connected to a sink 6 by a waste water groove 5.
A removable stopper 7 provided at the bottom of the
It is communicated with the sewer ditch 8 by. The sewer 8 is connected to a city sewer pipe (not shown). The above plug body 7
consists of a pipe body 10 having a through hole 9, a rubber 11 is wrapped around the lower part, and the pipe body 10 is removably fixed to the bottom of the receiving tank part 3. The pipe body 10 is formed at approximately the same height as the inflow water level l of waste hot water at all times, so when the plug body 7 is fixed to the bottom of the receiving tank 3, it is located slightly below the inflow water level of waste hot water. be done.
A notch 12 is provided at the top of the pipe body 10 at an inflow site for waste hot water. The notch 12 may be formed in any suitable shape, but it is preferable to form it in a U-shape in order to improve suction of waste hot water. Reference numeral 13 denotes a metal rod used when the plug body 7 is detachable.

The heat exchange section 4 is formed adjacent to the receiving tank section 3 by the partition plate 2, and is communicated with the receiving tank section 3 through an opening provided at the lower part of the partition plate 2. The heat exchange tank section 4 has a plurality of rooms (20 rooms in this example) 4a, 4b, 4c, .
It is divided into r, 4s, and 4t. Each chamber has removable plugs 14a, 14b, 14c...1 provided at the bottom.
4r, 14s, and 14t communicate with the sewer ditch 8. When there is a large amount of floating waste, the plug 14a provided in the first chamber 4a of the heat exchange tank section is closed to the plug 7.
Similarly, it is preferable to use a pipe body (not shown) having a through hole formed at approximately the same height as the inflow water level l of the waste hot water at all times. The pipe body in this case has a smaller diameter than the plug body 7, and the notch 12 in the plug body 7 may not be provided. Heat exchangers 15a, 15b,...15r, 15s, 15 are installed in each chamber 4a, 4b, 4c...4r, 4s, 4t of the heat exchange tank section.
t is provided. The heat exchangers 15a, 15b,...
15r, 15s, 15t are partition plates 2a, 2
b,...2r, 2s, 2t are sealed hollow boxes, and six sides are made of a high heat conductor such as a copper plate or a stainless steel plate. The heat exchanger is provided with an appropriate number of waste hot water pipes 16 that are open at the top and bottom, each through which waste hot water passes. Communication pipes 17 for passing bath water are connected alternately to the upper part of the heat exchanger 15, and thereby the heat exchangers 15a, 15b,...15
r, 15s, and 15t are in communication with each other. The heat exchanger 15t in the last chamber is connected to a water source 18 such as well water.
The heat exchanger 15a in the first chamber is communicated with the pot 19. At the bottom of the heat exchange tank section 4, a gas diffuser 21 connected to a compressor 20 is installed. The gas diffuser 21 may be pipe-shaped or planar as long as it generates small bubbles. Reference numeral 22 designates an outflow tank portion provided at the other end of the waste water heat recovery tank 1, and 23 designates a notch portion for outflowing the waste water provided at the center of the upper part of the end wall of the outflow tank portion. The outflow tank part 2
2 may be formed in the heat exchange tank section by providing a heat exchanger. Reference numeral 24 denotes a treatment agent made of bacteria for waste treatment placed at the entrance of the uppermost groove of the waste water groove 5 of the sink 6.

[Function] Next, the function of the waste water treatment device according to the present invention will be explained.

First, after business hours are over, the stopper 7 is removed before cleaning the sink 6 and bathtub. Since a metal rod 13 is attached to the plug body 7, it is easy to attach and detach it remotely. Next, when the sink 6 and the like are cleaned, the abrasive such as a cleanser used during cleaning can flow directly from the receiving tank 3 to the drain 8, so that the abrasive does not flow into the heat exchange tank 4. The abrasive is transferred to the heat exchanger 15
The flow into the heat exchange tank 4 should be avoided as much as possible, as it may damage the water, but in the past, cleaning was done without removing the stopper from the receiving tank, so waste water mixed with abrasives could flow into the heat exchange tank 4. into heat exchanger 1
5 was damaged. During cleaning, the plugs 14a, 14b, 14c...14r,
14s and 14t are also drained, and it is desirable to drain the cold waste water from each room into the drain 8. Also in this case, each stopper 14a, 14b, 14c
... Since the metal rods 13 are attached to 14r, 14s, and 14t, it is easy to attach and detach them remotely. After the cleaning is completed, a treatment agent 24 made of bacteria for filth treatment is placed at the entrance of the uppermost groove of the waste water groove 5 of the sink 6, and the stopper 7 is fitted into the receiving tank 3, and heated. The plugs 14a to 14t of each chamber of the exchange tank section 4 are fitted.

However, I am open for business. During business hours, a large amount of waste hot water flows into the receiving tank 3 from the waste hot water groove 5.
This waste water contains floating filth such as hair, grime, soap and shampoo foam, and the floating filth floats on top of the waste water. At this time, a stopper 7 is fixed to the receiving tank 3 so as to be located slightly below the inflow level of the waste hot water, and the stopper 7 is provided with a notch 12 at the waste water inflow site at the top. Therefore, the floating waste flows from the notch 12 to the through hole 9 of the plug body 7 while remaining on some of the waste water.
into the sewer drain 8 directly through the through hole 9.
leaks to. Therefore, almost no floating filth flows into the heat exchange tank section 4.

The waste hot water that has flowed into the receiving tank section 3 flows into the first chamber 4a of the heat exchange tank section through an opening provided at the lower part of the partition plate 2. The waste hot water that has flowed into the first chamber 4a of the sintering exchange tank section is pushed upward by the flow pressure and flows into the waste hot water pipe 1.
6 flows into the heat exchanger 15a from the upper opening, flows out through the lower opening through the waste pipe 16, and flows into the heat exchange tank second chamber 4b from the opening provided below the partition plate 2a. do. In the above case, if a stopper made of a pipe as described above is fixed to the first chamber 4a of the heat exchange tank part, most of the remaining floating waste that has flowed into the first chamber 4a can be removed. The hot water can be discharged directly into the drain 8 from the through hole of the stopper. In this way, the waste hot water that has passed through the series of heat exchange tank sections 4 overflows from the notch 23 provided at the other end of the waste water heat recovery tank 1 and flows into the sewage groove 8.

Therefore, as described above, almost no floating filth flows into the heat exchange tank section 4, so that such filth does not adhere to the heat exchanger 15. Moreover, in each chamber of the heat exchange tank section 4, the air supplied from the compressor 20 is discharged from the gas diffuser 21 in the form of fine bubbles, so that the adhesion of dirt to the heat exchanger 15 is further prevented. . As a result, waste water heat is recovered at a high rate and corrosion of the heat exchanger is prevented.

That is, in each chamber of the heat exchange tank section 4, the gas diffuser 21
When more air is supplied, the flow of waste hot water is promoted by the supply pressure of the air and the upward force of the bubbles. The temperature of the waste hot water flowing into the first chamber 4a of the heat exchange tank section is:
The temperature is about 38℃, and this is the 4t last chamber of the heat exchange tank.
Conventionally, the temperature of the waste hot water would drop to about 19°C when it was discharged from the water, but as a result of the present invention promoting the flow of waste hot water, the temperature of the hot water was maintained at about 25°C in this example. In addition, the force generated when the bubble bursts at the interface of the heat exchanger 15 peels off dirt adhering to the surface of the heat exchanger 15, and prevents dirt from adhering to the surface. Furthermore, since the waste hot water passes through a treatment agent 24 made of bacteria for filth treatment placed at the entrance of the waste water groove 5, bacteria are mixed into the waste hot water flowing into the heat exchange tank section 4. However, the above air supply effectively supplies oxygen to the bacteria, further activating the bacteria.
By decomposing some of the waste that has flowed into the heat exchange tank section 4, purification of the waste hot water is further promoted.

As a result, the heat loss of waste water is reduced, and the efficiency of heat exchange of waste water heat to bath water is increased.
That is, bath water flows into the heat exchanger 15 provided in the heat exchange tank 4 from the water source 18 in the opposite direction to the flow of the waste hot water, and as it passes through each heat exchanger 15, the waste water flows. Heat is conducted to the bath water, which warms it. Conventionally, the temperature of bath water (in the case of well water) of about 17°C when it passes through the first chamber 4a of the heat exchange tank is 27°C. However, in this example, the temperature rose to about 35°C. Furthermore, as the adhesion of floating dirt is prevented, corrosion of the heat exchanger is prevented.

[Effects of the Invention] As described above, according to the waste water treatment apparatus according to the present invention, almost no filth flows into the heat exchange tank, and even the filth that partially flows into the heat exchanger is almost completely prevented from adhering to the heat exchanger. Because it is possible to recover waste water heat at a high rate,
Furthermore, corrosion of the heat exchanger can be prevented.
Furthermore, since the waste water heat recovery tank is treated with waste during its operation, that is, during the heat exchange between waste water and bath water, cleaning the waste water heat recovery tank requires at least operating the stopper of the receiving tank. It's very simple and easy to do.

[Brief explanation of drawings]

The drawings show an embodiment of the waste water treatment apparatus according to the present invention, and FIG. 1 is a front sectional view thereof, FIG. 2 is a partially omitted plan view, and FIG. 3 is an enlarged perspective view of a plug body. 1...Waste water heat recovery tank, 3...Receiving tank section, 4...Heat exchange tank section, 6...Sink area, 7...Blug body, 8...Sewage gutter, 9...Through hole, 10... Pipe body, 12...
... Notch, 15 ... Heat exchanger, 17 ... Communication pipe, 1
8... Water source, 19... Pot, 21... Gas diffuser.

Claims (1)

[Claims] 1 Consists of a receiving tank part that communicates with the sink and the sewer through a removable plug provided at the bottom, and a heat exchange tank part that communicates with the receiving tank part, and the heat exchange tank parts are mutually connected. Each chamber is divided into a plurality of chambers that communicate with each other, each chamber is connected to a sewer drain through a removable stopper provided at the bottom, and each chamber is equipped with a heat exchanger made of a highly thermally conductive material such as a copper plate. In a waste water treatment device consisting of a waste water heat recovery tank which is connected to each other, one side is connected to a water source, and the other side is connected to a pot, a stopper body consisting of a pipe body having a through hole in the receiving tank part is provided. The pipe body is removably fixed, the pipe body is formed at approximately the same height as the inflow water level of the waste hot water at all times, and a notch is provided at the waste water inflow portion at the top of the pipe body, and a cutout is provided at the bottom of the heat exchange tank portion. is a waste water treatment device characterized by being provided with a gas diffuser connected to a compressor.