JP2002038540A - Facilities for reclaimed water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide facilities for reclaimed water, which have a water storage tank including therein a settling chamber and a water storage chamber, and functions to collect reusable drainage with low contamination degree, such as rainwater and drainage from a bathroom, and pour the same into the settling chamber, and thereafter to allow a supernatant liquid to overflow a partition wall into the water storage chamber to be stored therein, thereby supplying the resultant water to a variety of application destinations, wherein the concentration of a bactericide in the water stored in the water storage chamber is set to a constant value irrespective of the amount of inflow water therein. SOLUTION: The partition wall 16 has a penetrated opening 28 for overflowing formed at an upper end thereof. A container-like agent-eluting instrument 30 having a notch 42 is set at a location downstream adjacent to the opening 28, and overflowing water from the opening 28 is poured into the agent eluting instrument 30, followed by passing the notch 42 to be dropped into the water storage chamber. Further, the agent eluting instrument 30 has a lower portion of a cartridge 32 soaked therein. The interior of the cartridge is filled with the solid bactericide 34. Thus, the solid bactericide 34 is eluted into the overflowing water in the agent eluting instrument 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention collects low-pollutable reusable wastewater such as rainwater and bathroom drainage and stores the collected wastewater 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-pollutant wastewater such as rainwater and bathroom drainage is collected and stored in a water storage tank, and the stored low-pollutant wastewater is used as washing water for toilets and water for car washing. It is considered that the water is supplied to various destinations as water for watering gardens or the like.

For this purpose, the inside of a water storage tank is divided into a sedimentation chamber and a water storage chamber by a partition wall, and the low-pollutant wastewater is collected and first flowed into the sedimentation chamber. There has been proposed an apparatus in which a liquid flows over a partition wall by overflow and flows into a water storage chamber, and the medium water stored in the water storage chamber is supplied to a destination.

[0004] Fig. 6 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 wastewater flowing in from the inflow port 202, and the sedimentation chamber 208 is also provided inside the sedimentation chamber 208 at a constant rate. By always storing an 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. Although various methods can be considered as the sterilization treatment method, a method in which a cartridge 216 filled with a solid germicide 218 (see FIG. 7B) is immersed in water to elute the solid germicide 218 into water. Is preferably used because of its low cost. FIG. 6 (A) shows an example in which the medicine cartridge 216 is immersed in water in the sedimentation chamber 208 and the solid disinfectant
This is an example in which 8 is eluted into water in the precipitation chamber 208.

However, in such a case, for example, when there is almost no inflow water, the solid disinfectant 21
8 gradually elutes into the water in the sedimentation chamber 208 with the passage of time, and as a result, the concentration of the disinfectant in the water in the sedimentation chamber 208 and the subsequent storage water in the water storage chamber 210 becomes excessively high. Problem arises.

On the other hand, FIG. 6B shows an example in which the cartridge 216 is immersed in the storage water in the water storage chamber 210, and the solid germicide 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. Therefore, the immersion depth of the cartridge 216 with respect to the water storage also rises and falls. And the amount of the solid germicide 218 eluted greatly fluctuates with this, causing a problem that the germicide concentration of the stored water sent to various destinations varies greatly.

On the other hand, in the example of FIG. 7A, 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 germicide 218 is eluted into overflow water.

However, in this case as well, the amount of the solid germicide 218 eluted is greatly affected by fluctuations in the amount of rainwater or other wastewater flowing into the water storage tank 200. That is, since the contact time between the overflow water and the cartridge 216 is short, when the amount of inflow is large and the amount of overflow water is large, the concentration of the disinfectant in the storage water is low, and conversely, the amount of inflow is small. Therefore, when the amount of overflow water is small, there is a problem that the concentration of the disinfectant becomes relatively high.

[0012]

SUMMARY OF THE INVENTION The sewage system of the present invention has been devised to solve such problems. Thus, the wastewater equipment of the present invention has a water storage tank provided with a sedimentation chamber and a water storage chamber partitioned by a partition wall, and supplies low-pollutable reusable drainage such as rainwater and bathroom drainage. After collecting and flowing into the sedimentation chamber, the supernatant liquid was allowed to flow into the water storage chamber over the partition wall by overflow and stored, and the stored water in the water storage chamber was supplied to the destination. An underwater facility, wherein a through-hole for overflow is provided at an upper end of the partition wall, and a container-shaped drug dissolution device having a notch is installed at a position adjacent to the downstream of the opening, so that the opening from the opening is provided. A drug cartridge in which overflow water is caused to flow into the drug dissolution device, and then falls through the notch into the water storage chamber, and a solid germicide is filled inside the drug dissolution device. The solid disinfectant is immersed in the lower part of the Characterized in that no such elute the overflow water.

[0013]

As described above, according to the present invention, the water in the sedimentation chamber is caused to overflow from the through-opening provided at the upper end of the partition wall into the drug dissolution apparatus installed at a position adjacent to the downstream of the through-hole. The overflow water is allowed to fall into the water reservoir through the notch of the drug dissolver, and the solid disinfectant is eluted into the overflow water flowing through the drug dissolver by immersing the cartridge in the drug dissolver. According to the present invention, it is possible to keep the concentration of the disinfectant of the stored water in the storage chamber constant.

In the present invention, when the amount of wastewater flowing into the water storage tank is large, that is, when the amount of overflow water is large, the level of the overflow water inside the chemical elution device is reduced due to the flow resistance action of the drug dissolution device. On the other hand, when the inflow amount is small, that is, when the amount of the overflow water is small, the level of the overflow water in the medicine dissolution device becomes low. And the elution amount of the solid germicide changes according to the fluctuation of the water level.

Specifically, when the amount of overflow water is large and the level of overflow water in the drug dissolution unit is high, the amount of solid germicide eluted increases, and when the amount of overflow water is small, When the level of the overflow water in the dissolution unit is low, the dissolution amount of the solid germicide decreases.

In the present invention, it is possible to maintain the concentration of the germicide in the storage water in the storage chamber substantially constant by appropriately adjusting the size of the notch of the drug dissolution device. In addition, since the solid disinfectant elutes into the water at a substantially constant concentration, it is easy to know the time of replenishment of the solid disinfectant, making the replenishment of the solid disinfectant easy and the disinfectant concentration in the storage water almost constant. Therefore, it is possible to prevent pump corrosion, pipe corrosion, and the like due to an excessively high disinfectant concentration.

[0017]

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 a sedimentation chamber 18 on the upstream side and a water storage chamber 20 on the downstream side.

Reference numeral 22 denotes a pump for pumping out the stored water (medium water) stored in the water storage chamber 20 to the outside, and the pump uses the water stored in the water storage chamber 20 to various destinations, for example, as washing water for toilets. Alternatively, it is supplied as water for car washing, and also as water for watering the garden. 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 this embodiment, an overflow through-hole 28 is provided at the upper end of the partition wall 16, and a container-like drug dissolution device 3 is provided at a position adjacent to the downstream of the opening 28.
0 is set. The medicine cartridge 32 is placed vertically in the medicine dissolution device 30.

FIG. 2 is an enlarged view specifically showing the peripheral portion of the drug dissolution device 30. As shown in the figure, the medicine cartridge 32 has a cylindrical shape and is filled with a plurality of disk-shaped solid germicides (in this example, a solid chlorine agent) 34 in a stacked state. The medicine cartridge 32 has an open shape at the lower end surface, and a notch 36 having a substantially U-shape is formed at the lower end portion. Through the open portion and the notch 36 at the lower end surface, the internal solid disinfectant 34 is formed. It is exposed to the outside.

The medicine dissolving device 30 includes side plates 38A, 38B,
38C, 38D and a bottom plate 40, the whole has a rectangular container shape, and the above-mentioned opening (a circular opening here) 28 is formed so as to penetrate the side plate 38A and the partition wall 16. The side plate 38 facing the opening 28
A notch 42 is formed in C to allow the overflow water that has flowed into the drug dissolution device 30 from the opening 28 to fall into the lower water storage chamber 20. Here, the notch 42 is formed with a uniform width W over the entire height of the drug dissolution device 30.

In this embodiment, the size of the opening 28 is φ1.
00 mm, the widths L ₁ and L ₂ of the drug dissolver 30 are 1
50mm, 110mm, height H is 80mm, notch 42
Has a width W of 55 mm.

In the case of this embodiment, the water in the sedimentation chamber 18 flows through the circular opening 28 into the drug eluting device 30, flows through the drug eluting device 30, and is provided on the side plate 38 C opposite to the opening 28. It falls into the water storage chamber 20 through the notch 42. That is, the water in the sedimentation chamber 18 passes through the drug elution device 30 and overflows into the water storage chamber 20.

FIG. 3 schematically shows the situation at that time. As shown in the figure, when the overflow water flows into the water storage chamber 20 through the drug elution device 30, the water level in the drug elution device 30 is caused by the drug elution device 30 acting as a flow resistor. Changes depending on the size of the overflow water. Specifically, when the amount of overflow water is small, the water level in the medicine dissolution device 30 is low as shown in FIG. 3A, and when the amount of overflow water is large, it is shown in FIG. 3B. As shown in FIG.

Then, the solid germicide 3 in the medicine cartridge 32 immersed in the overflow water inside the medicine dissolution device 30
4 is small when the amount of overflow water is small as shown in FIG. 3 (A), that is, when the water level in the drug elution device 30 is low, and on the contrary, as shown in FIG. 3 (B). Is large when the water volume in the medicine dissolution device 30 is high. Accordingly, when the amount of overflow water is small, the elution amount of the solid germicide 34 decreases, and when the amount of overflow water is large, the elution amount of the solid germicide 34 increases.

FIG. 4 shows the disinfectant concentration of the stored water in the water storage chamber 20 when the amount (flow rate) of the overflow water is changed and the dissolution of the drug eluter 30 when the drug dissolution device 30 shown in FIG. 2 is installed. It is a graph showing the result of measuring the change of the water level in the inside. Note that FIG. 4 also shows the measured values when the entire side plate 38C is eliminated and the surface of the drug dissolution device 30 opposite to the opening 28 is fully opened.

As shown in FIG.
Is provided, the internal water level rises with the amount of overflow water, and the width W of the notch 42
By adjusting the water level in the drug dissolution device 30 by adjusting the width W of the notch 42 to an appropriate width, the disinfectant concentration (residual chlorine concentration) can be adjusted to the amount of overflow water. You can see that it can be made almost constant regardless of the situation.

As described above, according to the present embodiment, the drug dissolution device 30
By appropriately adjusting the size of the notch 42 of
It is possible to keep the concentration of the germicide in the storage water in the water storage chamber 20 constant. Further, since the solid germicide 34 elutes into the water at a substantially constant concentration, it is easy to know the time of replenishment of the solid germicide 34, and the replenishment operation of the solid germicide 34 is facilitated. Is substantially constant, so that it is possible to prevent pump corrosion, pipe corrosion, and the like due to an excessively high disinfectant concentration.

Although the embodiment of the present invention has been described in detail, this is merely an example. For example, as shown in FIG. 5, instead of providing the notch 42 in the side plate 38C of the drug dissolution device 30, a notch 42 is provided in the side plate 38D, and the overflow water in the drug eluent 30 is stored in the water storage chamber 20 therefrom. The present invention does not deviate from the gist of the invention, for example, it is possible to provide the notch 42 at another place or to change the form of the notch 42 variously. Can be configured in variously modified forms.

[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 a drug dissolving device and its peripheral portion in FIG. 1;

FIG. 3 is an explanatory diagram of an operation of the drug dissolution device of FIG. 2;

FIG. 4 is a diagram showing a relationship between a bactericide concentration and a water level when the amount of overflow water is changed in a case where the drug dissolving device of FIG. 2 is provided.

FIG. 5 is a diagram showing a main part of another embodiment of the present invention.

FIG. 6 is a comparative example diagram shown to clarify the features of the present invention.

FIG. 7 is a comparative example diagram showing an example different from FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Water storage tank 16 Partition wall 18 Sedimentation room 20 Water storage room 28 Opening 30 Drug eluting device 32 Medicine canister 34 Solid germicide 42 Notch

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C02F 1/50 550 C02F 1/50 550C 560 560Z E03B 3/03 E03B 3/03 B

Claims (1)

[Claims] 1. A sedimentation chamber having a sedimentation chamber partitioned by a partition wall and a water storage chamber therein, and a reusable wastewater having a low degree of pollution such as rainwater or bathroom drainage is collected to collect the sedimentation chamber. After flowing into the storage chamber by overflowing the supernatant liquid through the partition wall into the water storage chamber and storing the water therein, and supplying the stored water in the water storage chamber to the destination. A through-hole for overflow is provided at the upper end of the partition wall, and a container-like drug dissolution device having a notch is installed at a position adjacent to the downstream of the opening to dissolve the overflow water from the opening into the drug elution. After flowing into the vessel, it was made to fall through the notch into the water storage chamber, and the lower part of the cartridge filled with a solid germicide was immersed in the drug dissolution apparatus. , The solid germicide to the overflow of the drug dissolver. Intermediate water facilities characterized in that without such elute the over water.