JPH08229590A - Circulation system of industrial waterworks and water storage tank - Google Patents

Abstract

PURPOSE: To effectively utilize water and to decrease the consumption of city water by recovering household waste water, feeding the recovered water into a stirring tank and purifying the recovered water with a septic tank group, then storing the water into a water storage tank group, feeding the stored water to industrial water utilizing points and returning the used industrial water to the stirring tank. CONSTITUTION: The septic tank group 2 is constituted by alternately and successively connecting respectively plural anaerobic bacterium tanks 4 and aerobic bacterium tanks 5. The septic tank group 2 is connected to the stirring tank 7 via a level control tank 6. The septic tank group 2 and the water storage tank group 3 are connected via a sand filter tank 8 and an overflow tank 9. Further, the waste water used at respective points 10 to 14 of home is collected via drain pipes 15 in the stirring tank 7. On the other hand, a rain water inflow pipe 26 is connected to a final water storage tank 3n of a water storage tank group 3 and water feed pipes 27 are connected thereto to feed the water by a water feed pump 28 to the respective points 10 to 14. The rain water inflow pipe 26 stores the rain water in the water storage tank group 3 to replace the clean water of the water storage tank group 3 with the rain water and to backward wash the sand filter tank 8 at need.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulation system for tap water, particularly domestic tap water, and a water tank therefor.

[0002]

2. Description of the Related Art Conventionally, there is known a system for utilizing middle water, which purifies wastewater from home and reuses it as other middle water. The utilization of the gray water in the conventionally known gray water utilization system is mainly for toilet water, sprinkling water, and car wash water, and the use is limited, and the gray water storage tank for reuse has one large volume. Since it is composed of a tank body, it has a drawback that the installation place and installation cost are great. In addition, conventional gray water utilization system is
After being used once, it was discharged into the sewage without being used again.

[0003]

SUMMARY OF THE INVENTION The present invention provides a circulation system in which waste water is purified and stored in a water storage tank, used as intermediate water, and then purified again and stored in the water storage tank for use. As a result, household wastewater is reduced to the sewage level as much as possible, and the amount of tap water used is significantly reduced.
Rainwater is also taken into this circulation system so that it can be used. Further, in an emergency, it can be used as drinking water by treating purified water for purification.

[0004]

Means for Solving the Problems In order to solve the above-mentioned problems, the means adopted by the present invention are a stirring tank equipped with a means for refining waste contained in wastewater, an anaerobic bacterium tank and an aerobic bacterium tank. A group of septic tanks that are alternately connected with each other, a group of water tanks that are connected with a plurality of water tank bodies, a rainwater inflow pipe that is connected to the group of water tanks and that allows rainwater to flow in, and an agitation tank, a group of septic tanks, a group of water tanks, and the use of medium water A septic tank group comprising a circulation circuit connecting points, and the tank bodies constituting the septic tank group and the water storage tank group are made of resin pipes having a predetermined diameter and length, and collect domestic wastewater and send it to the stirring tank. After being purified by the above method, the water is stored in a water tank group, the water stored in the water tank group is sent to a location where the gray water is used, and the used gray water is recovered again as drainage and returned to the stirring tank.

Further, the present invention is characterized in that a sand filter tank or a fine filter is interposed between the septic tank group and the water storage tank group.

Further, it is characterized in that the rainwater flowing in from the rainwater inflow pipe is replaced with the water stored in the water tank group.

Further, it is characterized in that the sand filter tank is backwashed with both water flowing from the both water inflow pipes.

Further, a part of the purified water discharged from the septic tank group is returned to the stirring tank.

Further, a plurality of rigid resin pipes having a predetermined diameter and length are erected and connected to each other.

Further, a flexible pipe is arranged between the rigid resin pipes and is connected to each other.

[0011]

[Operation] After collecting wastewater generated at home, stirring it in a stirring tank to make the waste finer, a septic tank group consisting of multiple septic tanks in which anaerobic bacteria tanks and aerobic bacteria tanks are alternately connected. The water is purified, and a part of it is returned to the stirring tank to store water in a water tank group composed of a plurality of water tank bodies. The stored water in the water tank group is used as domestic water for domestic use, and the waste water used is put into the stirring tank again and circulated. Rainwater is made to flow into the water tank group to secure the amount of water stored, and when a large amount of rainfall occurs, the water in the water tank group is replaced with rainwater and the sand filter is backwashed.

The tank bodies constituting the septic tank group and the water storage tank group are used by erected a plurality of resin pipes having a predetermined diameter and length.
Since each tank group is connected to each other, the capacity of each tank group can be easily increased or decreased, and there is an advantage that the installation location is not selected. Further, by disposing the flexible pipe between the rigid resin pipes, it is possible to save space and increase the capacity.

[0013]

EFFECTS OF THE INVENTION According to the present invention, most of the water used at home can be reused as tap water, and rainwater can also be used as tap water. Therefore, the amount of clean water used can be significantly reduced. Also, the entire system can be constructed at low cost.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the drawings. In the figure, (1) is a septic tank group
It is a storage building that stores (2) and the water tank group (3), and is installed in an appropriate place outside the house or inside the house. The septic tank group (2) and the water storage tank group (3) are composed of a plurality of tank bodies, and each tank body is preferably made of a rigid synthetic resin pipe that has a predetermined diameter and length and is closed at the bottom to stand upright. Become. In the illustrated embodiment, one tank is, for example, 200 mm in diameter and 4 to 4 in length.
It consists of a 5 m vinyl chloride pipe. However, the diameter, length and material of the pipe are not limited to this.

The septic tank group (2) includes an anaerobic bacterium tank (4) for treating the liquid to be treated by using anaerobic bacteria and an aerobic bacterium tank (5) for treating the liquid to be treated by using aerobic bacteria. The anaerobic bacterium tank (4) and the aerobic bacterium tank (5) are alternately and sequentially connected to form a series of septic tanks (2). Water tank group (3)
Is composed of a plurality of tank bodies in which the tank bodies are connected to each other at the bottom, and a desired volume is obtained as a whole. The anaerobic bacterium tank or the aerobic bacterium tank is not limited to one, and a plurality of anaerobic bacteria tanks may be set as one set to increase or decrease the capacity.

The septic tank group (2) is a level control tank (6)
And the septic tank group (2) and the water storage tank group (3) are connected to each other through the sand filtration tank (8) and the overflow tank (9). The agitation tank (7) has a drainage pipe (where drainage is used in various places in the home such as a washroom (10), a washing machine (11), a toilet (12), a kitchen (13), a bath (14), etc. 15) is connected,
All domestic wastewater is collected intensively. Stirrer (7)
Purified bacteria consisting of anaerobic bacteria and aerobic bacteria are charged into the charging pipe (17). A submersible pump (16) is provided in the stirring tank (7) to stir the wastewater to make the waste contained in the waste finer and facilitate the purification process in the septic tank group (2). The waste water in the stirring tank (7) is fed to the level control tank (6). Incidentally, it is needless to say that the waste can be miniaturized by using a disposer or the like instead of the pump. Level control tank
(6) is for adjusting the water level of the septic tank group (2), and the septic tank group (2) is connected to the lower part of the first septic tank body (2a) of the septic tank group (2) by a connecting pipe (18). When the water is kept at a predetermined head, the overflow is returned to the stirring tank (7) by the overflow pipe (19). The first septic tank body (2a) may be formed to be slightly longer than the other septic tanks so that the function of the level control tank is shared and the level control tank (6) is omitted.
Since the level control tank (6) has no air charge,
Acts as an anaerobic bacterium tank, with active conditions for anaerobes set.

In the anaerobic bacterium tank (4), in order to adjust the anaerobic bacterium activation conditions and increase the contact area between the anaerobic bacterium and the treatment liquid,
An area-enlarging member such as a fiber strip, a band-shaped material, or a spiral-shaped fiber is charged. In the aerobic bacterium tank (5), the activation conditions of aerobic bacteria are adjusted, an air pipe (20) is connected, and air is supplied. Since the septic tank group is a long pipe and moves a long distance loaded from the lower part, the purification efficiency is improved.
In addition, barley stone is charged into the aerobic bacteria tank (5) up to the first or second stage to further activate the action of aerobic bacteria. Anaerobic bacterium tank (4) and aerobic bacterium tank (5) are alternately connected in series, and dirt and impurities in the liquid to be treated are decomposed alternately in the anaerobic bacterium tank and aerobic bacterium tank for a relatively short time. Is purified by. An air pipe (21) is connected to any one of the anaerobic bacterium tanks (4), and a part of the sewage in the anaerobic bacterium tank (4) is returned to the level control tank.

The treated liquid discharged from the septic tank group (2) is a sand filter tank (8).
The foreign matters and the treatment residue in the septic tank group (2) are filtered and then stored in the water tank group (3) through the overflow tank (9). In the overflow tank (9), the water level of the level control tank (6) is kept at the same water level, and the overflowed purified water is stored in the water tank group and overflows from the water tank group (3). Is being prevented. The purified water that overflows in the overflow tank (9) overflows in the overflow pipe (22) and is returned to the stirring tank (7) or discharged to the sewer. The tank bodies of the water tank group (3) are connected to each other by a thick connecting pipe (23), and the connecting pipe (2
From the 3), the drain pipe (24) is used to discharge the drain under the tank. An on-off valve (25) is provided in the discharge pipe (24), and when a large amount of rainwater flows into the water storage tank group (3) as described later, the valve is opened to clean the water in the water storage tank group (3). Replace with rainwater. As a result, the purified water, which has been concentrated such as Na ions and phosphorus, is exchanged by being recycled and used.

The water storage tank group (3) is composed of a group of tank bodies in a parallel connection state in which a plurality of tank bodies made of the vinyl chloride pipe are erected, the lower parts are connected to each other, and the upper parts are open to the atmosphere. Overall, the required amount of purified water can be stored. For example, if one person uses 300 liters of tap water a day, 1500 liters will be required for a family of five. The vinyl chloride pipe having a diameter of 200 mm and a length of 4 to 5 m is 125 to 1 per pipe.
Since there is a storage capacity of 50 liters, it is sufficient to prepare at least 12 to 10 vinyl chloride pipes. In the illustrated embodiment, 14 pieces are prepared.

In the last-stage water tank (3n) of the water tank group (3),
The collected rainwater inflow pipe (26) is connected, and the water supply pipe (2
7) is connected and water is supplied to the washing machine (11), toilet (12), bath (14), car wash (29), sprinkling water (30), etc. by the water supply pump (28). The rainwater inflow pipe (25) has pores in the lower part to discharge polluted rainwater at the beginning of rainfall.
In addition to flowing into (3) to store water, when there is a large amount of rainfall, the on-off valve (25) is opened to replace the purified water in the water tank group (3) with rain water, and if necessary, a sand filter tank ( Backwash 8).

FIG. 3 shows a modification of the water storage tank group (3), in which a flexible pipe (31) is arranged between the tank bodies of the vinyl chloride pipes installed upright, and the water storage tank group (3) is The total water storage capacity can be increased by expanding the installation area of).

A microfilter (32) as shown in FIG. 4 may be used instead of the filtration tank (8). The microfilter (32) has a filter body (33) in which a large number of disc-shaped filter papers are laminated, and the filter body (33)
The liquid is made to flow from the outer peripheral side of the filter paper to the space between the filter papers to remove impurities from the fibers of the filter paper, and the purified water is made to flow out from the central passage (34). Alternatively, an ultraviolet lamp or ozone charging means may be attached to the sand filtration layer (8) or the microfiltration layer (32) for sterilization. Further, in an emergency, the purified water may be filtered with a hollow fiber filter or the like to be purified and used as drinking water.

Thus, according to the present invention, it is possible to circulate and purify all the wastewater generated in the home and use it as tap water, and there is almost no drainage discharged to the sewage, and rainwater is used in the system. Since it is designed to be taken in and used, it is possible to use water at a very high level. In addition, the tank bodies that constitute the septic tank group (2) and the water storage tank group (3) are formed by vertically arranging resin pipes having a predetermined diameter and length and connecting them to each other. The setting can be easily performed, the cost is low, the heating can be easily performed from the bottom, and the reaction of anaerobic bacteria or aerobic bacteria can be easily maintained.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall concept.

[Fig. 2] Piping diagram

FIG. 3 is a plan view of the septic tank group and the water storage tank group.

FIG. 4 is a sectional view of a microfilter.

[Explanation of symbols]

 (1) Storage building (2) Septic tank group (3) Water tank group (4) Anaerobic bacteria tank (5) Aerobic bacteria tank (6) Level control tank (7) Agitation tank (8) Sand filtration tank (9) Overflow Tank (10) Washroom (11) Washing machine (12) Toilet (13) Stand (14) Wind turbine (15) Drain pipe (16) Submersible pump (17) Purifying bacteria charging pipe (18) Connecting pipe ( 19) Overflow pipe (20) Air pipe (21) Air pipe (22) Overflow pipe (23) Connection pipe (24) Discharge pipe (25) Open / close valve (26) Rainwater inflow pipe (27) Water supply pipe (28) Water supply pump (29) Car wash area (30) Sprinkling water (31) Flexible pipe (32) Microfilter (33) Filter body (34) Passage

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C02F 9/00 504 C02F 9/00 504A 1/00 1/00 J X 3/30 ZAB 3/30 ZABA

Claims (7)

[Claims] 1. A stirring tank provided with a means for refining waste contained in wastewater, a septic tank group in which anaerobic bacteria tank and aerobic bacteria tank are alternately connected, and a water tank in which a plurality of water tank bodies are connected. A group of
It is equipped with a rainwater inflow pipe connected to the water tank group and inflowing rainwater, and a stirring tank, a septic tank group, a water tank group, and a circulation circuit connecting the points for utilizing the medium water, and the tank bodies constituting the septic tank group and the water tank group are predetermined. It is made of a resin pipe with the diameter and length of, and collects domestic wastewater, sends it to the stirring tank, purifies it with the septic tank group, and then stores it in the water tank group, and the stored water in the water tank group is used as the medium water utilization point A circulating system for tap water, in which the tap water that has been sent and used is collected as waste water again and returned to the stirring tank. 2. A sand filter tank or a microfilter is interposed between the septic tank group and the water tank group.
(1) The water supply circulation system described above. 3. The rainwater flowing in from the rainwater inflow pipe is replaced with the water stored in the water tank group.
The circulation system of the water supply system according to (1) or (2). 4. The circulation system for a water supply system according to claim 2, wherein the sand filter tank is backwashed with both water flowing from both water inflow pipes. 5. A part (1) (2) or (2), wherein a part of the purified water discharged from the group of septic tanks is returned to the stirring tank.
(3) Circulation system of the water supply described. 6. A water tank comprising a plurality of rigid resin pipes having a predetermined diameter and length, which are erected and connected to each other. 7. The flexible pipes are arranged between the rigid resin pipes and are connected to each other.
Water tank as described.