JP2002316168A - Reclaimed water equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that a solid chlorine agent is excessively eluted to overflow water at the time of a small flow ratio in reclaimed water equipment wherein reutilizable water low in turbidity such as rainwater, bathroom wastewater or the like is recovered and sterilized to be supplied to various use points as reclaimed water. SOLUTION: In the reclaimed water equipment wherein a sedimentation chamber and a water chamber demarcated by a partition wall 16 are provided in a water tank, an overflow port 28 is provided to the upper end of the partition wall 16 and a chlorine dissolving device 30, which has a passage member 40 for allowing overflow water to flow and a chemicals cylinder 34 wherein the solid chlorine agent is housed in a cylindrical container, is provided. A groove 44 is formed on the upper surface of the passage member 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for collecting low-pollutable reusable water such as rainwater and bathroom drainage and storing it in a water storage tank. Also, the present invention relates to an intermediate water system for supplying water for car washing or water for watering a garden.

[0002]

BACKGROUND OF THE INVENTION In recent years, low-polluting water such as rainwater and bathroom drainage has been collected and stored in a water storage tank, and the stored low-polluting water has been used as intermediate water for flushing toilets and for car washing. Or as water for watering the garden, etc., to various destinations.

For this purpose, the inside of the water storage tank is partitioned by a partition wall into an upstream water chamber and a downstream water chamber, for example, an upstream sedimentation chamber and a downstream water storage chamber. After collecting the low water and flowing it into the sedimentation chamber first, the supernatant liquid overflows the partition wall by overflow and flows into the water storage chamber, and the medium water stored in the water storage chamber is supplied to various destinations. What has been proposed has been proposed.

[0004] Fig. 8 shows an example of what is considered as a medium water facility, in which 200 is a water storage tank, 202 is an inlet, and 204 is an outlet. Reference numeral 206 denotes a partition wall provided inside the water storage tank 200. The partition wall 206 divides the inside of the water storage tank 200 into a sedimentation chamber 208 on the upstream side and a water storage chamber 210 on the downstream side.

[0005] Reference numeral 212 denotes stored water (medium water) in the water storage chamber 210.
, And the stored water pumped by the pump 212 is supplied to the above-mentioned various usage destinations. In this example, clean water can be supplied into the water storage chamber 210 through the clean water supply pipe 214.

[0006] The sedimentation chamber 208 is a chamber for sedimenting and removing sand, dirt and the like contained in the water flowing in from the inflow port 202, and the sedimentation chamber 208 is also provided therein. By always storing a certain amount of water, the inside of the water storage tank 200 buried in the soil becomes empty,
00 has a function of preventing damage.

[0007] Incidentally, in this medium water facility, it is necessary to sterilize water supplied to various destinations. Various methods can be considered as the sterilization treatment method. A method of immersing the cartridge 216 filled with the solid chlorine agent 218 (see FIG. 9B) in water to elute the solid chlorine agent 218 into the water. Is preferably used because of its low cost. FIG. 8A shows an example in which the medicine cartridge 216 is immersed in water in the precipitation chamber 208 and the solid chlorine 21
This is an example in which 8 is eluted into water in the precipitation chamber 208.

However, in this case, for example, when there is almost no inflow water, the solid chlorine 21
8 elutes more and more into the water in the sedimentation chamber 208 over time, and as a result, the chlorine concentration in the water in the sedimentation chamber 208 and the subsequent storage water in the water storage chamber 210 becomes unnecessarily high. Problems arise.

On the other hand, FIG. 8B shows an example in which the cartridge 216 is immersed in the storage water in the water storage chamber 210, and the solid chlorine agent 218 is eluted into the storage water. However, the water level in the water storage chamber 210 largely fluctuates up and down due to the fluctuation of the inflow amount of the inflow water or the pumping of the water stored in the water storage chamber 210 by the pump 212. And the amount of the solid chlorine agent 218 eluted greatly fluctuates with the fluctuation, resulting in a problem that the chlorine concentration of the storage water supplied to various destinations greatly fluctuates.

On the other hand, in the example of FIG. 9A, a horizontal mounting plate 220 is provided at the upper end of the partition wall 206, and the medicine cartridge 2 is placed there.
16 is placed vertically, and the water in the sedimentation chamber 208 is
When overflowing into the water storage room 210 beyond 6,
The cartridge 216 is brought into contact with the overflow water,
This is an example in which an internal solid chlorine agent 218 is eluted into overflow water.

[0011]

However, even in this case, the amount of the solid chlorine agent 218 eluted depends on the water storage tank 2
It largely depends on the fluctuation of the amount of rainwater or the like flowing into the inside of the water. That is, since the contact time between the overflow water and the cartridge 216 is short, when the inflow is large and the amount of overflow water is large, the chlorine concentration in the storage water is low, and conversely, the inflow is small. Therefore, when the amount of overflow water is small, there is a problem that the chlorine concentration becomes relatively high.

The present inventors have developed a passage member that allows overflow water to flow from an overflow port formed at an upper end portion of a partition wall, and then falls into a water storage chamber on the downstream side, and stands on both sides in the width direction of the passage member. A pair of side walls provided in a state, a front wall provided in an upright state at a front end of the passage member, a notch provided in the front wall, and overflow water placed on the upper surface of the passage member and flowing on the passage member. A water disintegrating system was devised in which a partitioning wall was provided with a chlorine dissolving device having a lower portion of a solid chlorine agent immersed therein and a cartridge for eluting the same.

FIG. 10 shows a specific example (main part) of the system. In the drawing, reference numeral 222 denotes a circular overflow port formed at the upper end of the partition wall 206, and 224 is provided following the overflow port 222, and allows overflow water from the overflow port 222 to flow therethrough.
It is a passage member that is dropped into the water storage chamber on the downstream side.

A pair of side walls 226A and 226B are provided upright on both sides in the width direction of the passage member 224, that is, both sides in a direction perpendicular to the direction of overflow water flow.
Further, a front wall 228 is provided upright at the front end of the passage member 224. Here, the front wall 228 is provided with a notch 230 having a width W over the entire height.

In the case of this intermediate water system, when the amount of water flowing into the water storage tank is large, that is, when the amount of overflow water is large, the passages due to the flow resistance of the side walls 226A, 226B and the front wall 228 are formed. When the level of the overflow water flowing over the member 224 increases, while the amount of inflow is small, that is, when the amount of the overflow water is small, the level of the overflow water flowing over the passage member 224 decreases.

As a result, when the contact area of the solid chlorine agent 218 with the overflow water is large, the contact area becomes large.
Also, when the flow rate is small, the amount becomes small and the amount of the solid chlorine agent 218 eluted is automatically adjusted, so that it is expected that the chlorine concentration in the water in the water storage chamber on the downstream side is maintained substantially constant.

However, in the course of further research, the residence time when the overflow water flows through the passage member 224 when the flow rate is small is actually increased, and the solid chlorine 21
8, the amount of dissolution of the solid chlorine agent 218 becomes excessively larger than expected, and the solid chlorinating agent 218 is consumed earlier than scheduled, so that the solid chlorinating agent 218 needs to be replenished frequently and maintenance work is troublesome. In addition to the problem described above, it has been found that the solid chlorine agent 218 elutes more than necessary, which causes a problem that metal fittings and the like at the end of the middle water facility are rusted.

Further, in order to prevent the solid chlorine agent 218 from being consumed earlier than expected, the solid chlorine agent 21
8 had to be increased in size, and as a result, it was found that there was an inconvenience that the chlorine dissolving apparatus was enlarged.

[0019]

SUMMARY OF THE INVENTION The sewage system of the present invention has been devised to solve such problems. According to the first aspect of the present invention, an upstream water chamber and a downstream water chamber defined by a partition wall are provided inside the water storage tank, and are low in pollutant such as rainwater and bathroom drainage. An intermediate water system configured to collect water, flow the water into the upstream water chamber, and then supply the water to the destination through the downstream water chamber, wherein an overflow port is provided at an upper end of the partition wall. Is provided so that water from the upstream water chamber overflows to the downstream water chamber, and after flowing overflow water from the overflow port, falls into the downstream water chamber. A passage member for allowing the solid chlorine agent to be accommodated in a cylindrical container, placed on the upper surface of the passage member, and immersing the lower solid chlorine agent in overflow water flowing over the passage member to form the solid chlorine agent. A chlorine dissolving device having a cartridge for eluting the agent; and The fibrinolytic system is characterized in that is provided with drawdown means for relatively lowering the water level of the overflow water with respect to the lower end of the solid pesticides.

A second aspect of the present invention is characterized in that, in the first aspect, side walls rising from the passage member are provided at both ends in the width direction of the passage member.

According to a third aspect of the present invention, in any one of the first and second aspects, the water level lowering means is a groove provided on an upper surface of the passage member.

According to a fourth aspect of the present invention, in any one of the first and second aspects, the water level lowering means is a spacer portion for lifting the lower end of the medicine cartridge by a predetermined distance with respect to the upper surface of the passage member. It is characterized by the following.

According to a fifth aspect, in any one of the first to fourth aspects, the upstream water chamber is a sedimentation chamber, and the downstream water chamber is a water storage chamber for storing sterilized water. It is characterized by the following.

[0024]

As described above, the present invention is provided with a water level lowering means for relatively lowering the level of the overflow water flowing on the passage member with respect to the lower end of the solid chlorine agent. For example, even when the residence time of the overflow water flowing over the passage member at a small flow rate is long, the elution of the solid chlorine agent with respect to the overflow water can be suppressed by reducing the contact area with the overflow water. It is possible to solve the problem that the solid chlorinating agent is consumed earlier than expected at the time of flow and replenishment has to be performed frequently, which makes maintenance work troublesome.

At a small flow rate, the solid chlorine agent is excessively eluted, and the chlorine concentration of the water downstream of the chlorine dissolving apparatus becomes unnecessarily high. It is possible to solve the problem that it becomes easy, and furthermore, at a small flow rate, the amount of the solid chlorine agent eluted can be reduced and appropriately suppressed, so that a small-sized solid chlorine agent can be used,
This makes it possible to downsize the chlorine dissolving apparatus.

In the present invention, side walls can be provided upright at both ends in the width direction of the passage member in the chlorine dissolving apparatus. In this way, the overflow water from the overflow port can be guided forward through the pair of side walls, and the level of the overflow water flowing over the passage member at a high flow rate can be increased to increase the solid chlorine content. The contact area of the agent with the overflow water can be made large, so that even when the residence time of the overflow water flowing on the passage member at a large flow rate is short, the amount of the solid chlorine agent eluted is large (appropriate Therefore, it is possible to prevent the chlorine concentration in the water from decreasing.

In this case, the front end of the passage member can be left open without providing a front wall. However, in some cases, a front wall and a notch may be provided at the front end.

According to a third aspect of the present invention, a groove is provided on the upper surface of the passage member as the water level lowering means. By providing the groove on the upper surface of the passage member, overflow water is mainly generated at a small flow rate. And the water overflowing from the groove can slightly contact the solid chlorine agent.

According to a fourth aspect of the present invention, a spacer portion is provided as the water level lowering means so that the lower end of the cartridge rises a predetermined distance with respect to the upper surface of the passage member. The same effect as that of No. 3 can be obtained. In the present invention, the upstream water chamber may be a sedimentation chamber, and the downstream water chamber may be a water storage chamber for storing sterilized water.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a wastewater system of this embodiment. In the figure, reference numeral 10 denotes a water storage tank, which has an inlet 12 and an outlet 14. Reference numeral 16 denotes a partition wall provided inside the water storage tank 10. The partition wall 16 divides the inside of the water storage tank 10 into an upstream sedimentation chamber (water chamber) 18 and a downstream water storage chamber (water chamber) 2.
It is divided into 0.

A pump 22 pumps out the stored water (medium water) stored in the water storage chamber 20 to the outside.
The water stored in the water storage chamber 20 is supplied to various destinations by, for example, toilet washing water or car wash water, and water for garden watering, etc. by 2. Reference numeral 24 denotes a supply pipe for supplying clean water into the water storage tank 10, and reference numeral 26 denotes an on-off valve provided on the supply pipe 24.

In the present embodiment, an overflow port 28 for overflow is provided at the upper end of the partition wall 16, and a chlorine dissolving device 30 is installed at a position adjacent to the overflow port 28 downstream of the overflow port 28.

FIGS. 2 and 3 show the structures of the overflow port 28 and the chlorine dissolving device 30 in detail. As shown in the figure, the overflow port 28 is a circular opening in this example, and the chlorine dissolving apparatus 30 has a main body 32 and a medicine cartridge 34 which are substantially in a container shape and a box shape.

The cartridge 34 is a cylindrical container filled with a disk-shaped solid chlorine agent 36 in a stacked state.
The lower end surface has an open shape, and a substantially U-shaped notch 38 is formed at the lower end portion. The internal solid chlorine agent 36 is exposed to the outside through the open portion and the notch 38 at the lower end surface. ing.

On the other hand, the main body 32 is composed of a flat plate-shaped passage member 40 for allowing overflow water from the overflow port 28 to flow through a predetermined distance and then falling into the water storage chamber 20, and a pair of standing members at both ends in the width direction of the passage member 40. Side wall 42
A, 42B. In this example, the passage member 4
No front wall is provided at the front end of the main body 32, and the main body 32 has an open shape at its front end face.

At the center in the width direction of the passage member 40, a groove 44 is formed over the entire length. At the right side position and the left side position of the groove 44, the medicine tube 34 is formed on the upper surface of the passage member 40, respectively. It is placed. In this example, the width W of the groove 44 (see FIG. 3) is 15 mm,
Has a depth d of 5 mm.

In the case of this embodiment, the water in the settling chamber 18 flows into the chlorine dissolving device 30, specifically, the main body 32 through the circular overflow port 28, and flows through the upper surface of the passage member 40 forming the bottom thereof. After that, it falls into the water storage chamber 20 from the opening at the front end. At that time, the solid chlorine agent 36 in the lower part of the medicine cartridge 34 comes into contact with the overflow water flowing on the upper surface of the passage member 40, so that the solid chlorine agent 36 elutes into the overflow water.

In the present embodiment, the groove 44 is formed over the entire length of the passage member 40 as described above. Therefore, at a small flow rate, the overflow water flowing from the overflow port 28 mainly flows through the inside of the groove 44. Then, only a part of the overflow water overflowing from the groove 44 flows while spreading along the upper surface of the passage member 40 as shown in FIG. The width, depth, shape, and the like of 44 are selected.) On the way, the solid chlorine agent 36 in the lower part of the cartridge 34 is contacted and supplied with chlorine. From the opening at the front end of the storage tank 20.

At this time, the flow rate of the overflow water is the fastest in the inside of the groove 44, and the overflow water overflowing to both sides of the groove 44 is relatively slower than the flow rate in the groove 44. It passes through the cartridge 34 while spreading left and right along the upper surface.

In this embodiment, the contact area of the solid chlorinating agent 36 with the overflow water from the overflow port 28 at a small flow rate is small, so that the elution amount of the solid chlorinating agent 36 into the overflow water at a small flow rate is suppressed. . That is, at the time of a small flow rate, the residence time of the overflow water flowing on the upper surface of the passage member 40 becomes longer,
As a result, the amount of the solid chlorine agent 36 eluted in the overflow water becomes larger than expected and the solid chlorine agent 36 is prevented from being eluted into the overflow water more than necessary.

FIG. 5 shows the above-described groove 44, that is, the groove 44 having a width W of 15 mm and a depth d of 5 mm.
4 shows test results obtained by measuring the relationship between the flow rate (flow rate) of overflow water and the elution rate (free residual chlorine concentration) of the solid chlorinating agent 36 when provided on the upper surface. As shown in FIG. 5, when the above-described groove 44 is not provided, when the flow rate is small, that is, when the flow rate is small, the free residual chlorine concentration sharply increases. When the groove 44 is provided, the free residual chlorine concentration is maintained substantially constant from the small flow rate to the large flow rate.

When the flow rate is large, the overflow port 2
8 overflows from the pair of side walls 42A, 42B.
Flow through the passage member 40 in a state where the flow path is restricted, the water level of the overflow water on the upper surface of the passage member 40 is maintained to a certain high level. As a result, the contact of the solid chlorine agent 36 with the overflow water at a large flow rate At the same time, the problem that the area becomes large and the amount of the solid chlorine agent 36 eluted into the overflow water becomes extremely small at the time of a large flow rate is solved.

In the water supply system of this embodiment, the elution of the solid chlorinating agent 36 into the overflow water at a small flow rate increases, so that the solid chlorinating agent 36 is consumed earlier than expected and replenishment is frequent. The maintenance work is not troublesome.

Further, in this embodiment, since the amount of the solid chlorine agent 36 eluted can be reduced and appropriately suppressed, the chlorine concentration of the water downstream of the chlorine dissolving apparatus 30 becomes unnecessarily high.
It is possible to solve the problem that the metal fittings and the like at the end of the municipal water facilities are easily rusted, and it is also possible to use a small-sized solid chlorine agent 36, so that the chlorine dissolving device 30 can be downsized.

FIG. 6 shows another embodiment of the present invention.
As shown in the figure, in this example, a spacer portion 46 is provided at the lower end position of the medicine cartridge 34 so that the lower end of the solid chlorine agent 36 is
This is an example in which a predetermined minute distance is caused to float with respect to the upper surface of. That is, by providing such a spacer portion 46, the level of the overflow water flowing through the upper surface of the passage member 40 relative to the lower end of the solid chlorine agent 36 is relatively lowered. Also in this case, the same effects as in the above embodiment can be obtained.

In the above embodiment, the front end face of the main body 32 of the chlorine dissolving apparatus 30 is formed in an open shape. However, as shown in FIG. 50 may be provided.

The embodiments of the present invention have been described in detail above, but these are merely examples. For example, in the first embodiment, only one groove 44 is provided, but two or more grooves 44 may be provided, or the shape of the groove 44 may be made oblique, It is also possible to make a shape. Further, the present invention can be applied to various forms of sewage facilities, and can be configured in various modified forms without departing from the gist thereof.

[Brief description of the drawings]

FIG. 1 is a diagram showing a drainage system according to one embodiment of the present invention.

FIG. 2 is an enlarged view showing the chlorine dissolving apparatus of FIG. 1 and a peripheral portion thereof.

FIG. 3 is a diagram showing a configuration of a chlorine dissolving apparatus of FIG. 2;

FIG. 4 is an operation explanatory view of the chlorine dissolving apparatus of the embodiment.

FIG. 5 is a view showing the results of a test performed to confirm the effect of the chlorine dissolving apparatus of the example.

FIG. 6 is a view showing a main part of another embodiment of the present invention.

FIG. 7 is a diagram showing a main part of still another embodiment of the present invention.

FIG. 8 is a diagram showing an example of a conventional sewage system.

FIG. 9 is a diagram showing an example of a conventional sewage system different from FIG.

FIG. 10 is a diagram illustrating, as a comparative example, a chlorine dissolving device of a middle water facility devised by the present inventors.

[Explanation of symbols]

 Reference Signs List 10 water storage tank 16 partition wall 18 sedimentation chamber (water chamber) 20 water storage chamber (water chamber) 28 overflow port 30 chlorine dissolution apparatus 34 medicine cartridge 36 solid chlorine agent 40 passage member 42A, 42B side wall 44 groove 46 spacer portion

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C02F 1/50 560 C02F 1/50 560Z 1/00 1/00 J E03B 1/00 E03B 1/00 B 11 / 00 11/00 Z E03C 1/01 E03C 1/01 (72) Inventor Junya Kaneko 5-1-1 Koiehoncho, Tokoname-shi, Aichi F-term in Inax Co., Ltd. (Reference) 2D060 AA03

Claims (5)

[Claims] 1. An upstream water chamber and a downstream water chamber partitioned by a partition wall are provided inside a water storage tank to collect low-pollutable reusable water such as rainwater and bathroom drainage. An inflow water facility that flows into the upstream water chamber and is supplied to a destination through the downstream water chamber, wherein an overflow port is provided at an upper end portion of the partition wall, A passage member for causing the water from the upstream water chamber to overflow into the downstream water chamber, and allowing the overflow water from the overflow port to flow, and then dropping into the downstream water chamber, A medicine that contains a solid chlorine agent in a cylindrical container, is placed on the upper surface of the passage member, and immerses the lower solid chlorine agent in overflow water flowing over the passage member to elute the solid chlorine agent. A chlorine dissolving device having a cylinder and a chlorine dissolving device; , The gray water equipment, characterized in that is provided with drawdown means for relatively lowering the water level of the overflow water with respect to the lower end of the solid pesticides. 2. The underground water facility according to claim 1, wherein side walls rising from the passage member are provided at both ends in the width direction of the passage member. 3. The underground water facility according to claim 1, wherein the water level lowering means is a groove provided on an upper surface of the passage member. 4. The water level lowering means according to claim 1, wherein the water level lowering means is a spacer part for raising a lower end of the medicine cartridge to a predetermined distance with respect to an upper surface of the passage member. Medium water facilities. 5. The method according to claim 1, wherein the upstream water chamber is a sedimentation chamber, and the downstream water chamber is a water storage chamber for storing sterilized water. Medium water facilities.