JPH07166585A - Rain water purifying treatment tank - Google Patents

Abstract

PURPOSE:To stably re-utilize rain water by utilizing the potential energy of water, and adjusting the treatment quantity of the rain water in the housing development on a slope. CONSTITUTION:This rain water purifying treatment tank is provided with a raw water treatment storage tank 3 having a precipitation treatment chamber 1 and a treated raw water storage chamber 2, a treated raw water filter tank 4, an opening section 6 between the lower end of a partition plate 5 and the bottom section of the raw water treatment storage tank 3, a plurality of discharge valves 7 discharging the accumulated mud at the bottom section of the raw water treatment storage tank 3, and a plurality of outflow valves 8 adjusting the outflow quantity of the treated raw water to the filter tank 4. When the water level of the raw water treatment storage tank 3 is changed between the storage maximum water level and the storage minimum water level, the number of the outflow valves opened with their floating bodies in response to the water level difference is increased or decreased, and the outflow quantity of the treated raw water is adjusted constant to the extent possible. When the water level exceeds the storage maximum water level and reaches the cleaning water level, the discharge valves 7 discharge the accumulated mud from the mud discharge ports 17, and the outflow valves 8 are switched to the closed state of outflow ports 18 to the filter tank 4 from the opened state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rainwater purification treatment tank. Specifically, the present invention relates to a rainwater purification treatment tank for separating and removing rainwater sediment, removing water turbidity, removing soil contaminants, and reusing rainwater. Since rainwater can be treated by natural flow of water using the energy of the position of water,
Especially, it is suitable for reuse of rainwater in the development of a housing complex on a slope, for example.

[0002]

2. Description of the Related Art Conventionally, in order to mitigate the intensive outflow of rainwater to sewer pipes (rainwater pipes and confluence pipes), measures such as rainwater regulating ponds (tanks) and infiltration of rainwater underground have been taken. These measures for rainwater are to reduce the inflow load of the sewage treatment plant and recharge the groundwater, and effective reuse of rainwater is not included in the target.

For reusing conventional rainwater, "Kokugikan"
There is a case where water is collected on the roof surface (larger is more advantageous) as represented by the rainwater use system described in (1) and used for washing water of toilet after simple treatment.

[0004]

However, the conventional reuse of rainwater does not have a system that has a storage capacity as large as that of a rainwater regulating pond (tank), so that rainwater is not available during rainy seasons such as the rainy season. Although there is treated water, there is a problem that there is no coincidence between the time when it can be manufactured and the time when it is in demand, because there is no water shortage.

The present invention solves the above-mentioned problems of the conventional rainwater reuse system, and even if there is a change in the amount of rainfall during rainfall, and not only during rainfall but also after the end of rainfall,
It is an object of the present invention to provide a rainwater purification treatment tank that purifies a regulated amount and reuses a stable amount of rainwater.

[0006]

In order to achieve the above-mentioned object, the present invention provides a raw water treatment system comprising a sedimentation treatment chamber for separating and precipitating sediment of rainwater collected and a storage chamber for storing treated raw water. It comprises a storage tank and a filter tank for filtering the treated raw water discharged from the raw water treatment storage tank, and the precipitation treatment chamber and the storage chamber are separated by a partition plate, and the lower end of the partition plate and the raw water treatment An opening is provided between the bottoms of the storage tanks,
A rainwater purification process characterized in that a discharge valve for discharging accumulated mud is provided at the bottom of the raw water treatment storage tank, and an outflow valve for adjusting the outflow amount of the treated raw water to the filtration tank is provided in the raw water treatment storage tank. It is composed of a tank. The rainwater should be collected and supplied into the sedimentation treatment chamber and should not flow into the storage chamber as much as possible. Therefore, water is poured into or into the precipitation treatment chamber. Here, the term “treated raw water” refers to rainwater obtained by separating and sedimenting sediment from a raw water treatment storage tank. The partition plate has an opening at the lower end between it and the bottom of the raw water treatment storage tank, but the upper end of the partition plate is between the sedimentation treatment chamber and the storage chamber, and in order to distribute the stored water in the event of a large amount of rainfall, maximum storage is possible. The height may be such that it is buried with respect to the water level.

Further, according to the present invention, a raw water treatment storage tank having a sedimentation treatment chamber for separating and precipitating collected sediment of rainwater and a storage chamber for storing treated raw water, and the raw water treatment storage tank is discharged. And a filtration tank for filtering the treated raw water. The precipitation treatment chamber and the storage chamber are separated by a partition plate, and an opening is provided between the lower end of the partition plate and the bottom of the raw water treatment storage tank. , A discharge valve for discharging accumulated mud is provided at the bottom of the raw water treatment storage tank, and an outflow valve for adjusting the outflow amount of the treated raw water to the filtration tank is installed in the raw water treatment storage tank at a plurality of positions with different heights. The discharge valve comprises a cylindrical guide plate and a stopper engaged with the floating body, guided in the guide plate, and reciprocating depending on the vertical direction of the water level. The guide plate with a plurality of holes provided in the It is, being guided by the guide plate,
It is composed of a rainwater purification treatment tank, which comprises a stopper that reciprocates depending on the water level. Here, since the accumulated mud discharge valve discharges the accumulated mud together with water, for example, a guide plate is provided apart from the mud discharge port so that the plug can project from the lower end of the guide plate to the mud discharge port. You may make a round trip. In this case, the accumulated mud is discharged into the mud outlet through the gap between the mud outlet and the guide plate and sent into the mud pipe. Plural outflow valves are installed by changing the installation height. The floating body of each outflow valve moves up and down due to the fluctuation of the water level, which increases or decreases the number of open outflow valves. As the water level increases, the number of open outflow valves decreases, and when it decreases, it increases. The outflow rate is adjusted to be as constant as possible by changing the total area of the outlets and the water level difference between each outlet and the water surface. The number of outflow valves and the cross-sectional area of the outflow pipe may be appropriately determined depending on the amount of water supplied to the filtration tank and the adjustment range of the amount of water supplied. The openings are provided in the guide plate of the outflow valve at intervals along the length thereof so as not to obstruct the flow of water, and have a sufficient opening ratio.

Further, according to the present invention, a raw water treatment storage tank having a sedimentation treatment chamber for separating and precipitating the sediment of the collected rainwater and a storage chamber for storing the treated raw water, and the raw water treatment storage tank is discharged. And a filtration tank for filtering the treated raw water. The precipitation treatment chamber and the storage chamber are separated by a partition plate, and an opening is provided between the lower end of the partition plate and the bottom of the raw water treatment storage tank. , A discharge valve for discharging accumulated mud is provided at the bottom of the raw water treatment storage tank, and a plurality of outflow valves for adjusting the outflow amount of the treated raw water to the filtration tank are provided in the raw water treatment storage tank. And a plug body that is engaged with the floating body, guided in the guide plate, and reciprocates according to the vertical movement of the water level, and the outflow valve has a plurality of openings provided at intervals in the longitudinal direction. The guide plate with holes is engaged with the floating body and is guided inside the guide plate. If the water level of the raw water treatment storage tank fluctuates between the maximum storage water level and the minimum storage water level, the water level difference and the floating body of the outflow valve move up and down depending on the water level difference. When the number of outflow valves opened by changing the amount of raw water to be treated to the filtration tank is adjusted to be as constant as possible, and when the water level exceeds the maximum storage water level and reaches the wash water level, the discharge valve is Moved from the state where the plug body closed the mud discharge port to the state where the mud discharge port was opened, discharged the accumulated mud from the mud discharge port, and the state where the outflow valve opened the outlet to the filtration tank It is composed of a rainwater purification treatment tank which is characterized in that it moves from a closed state to a closed state.

According to the present invention, the bottom portion of the raw water treatment storage tank is formed into a hopper shape, and the lower end of the hopper shape is provided with a sludge discharge port, and the partition plate is set so that the discharge port is located on the storage chamber side. Provided near the treatment chamber, provided with a multi-tiered inclined plate for promoting the separation and sedimentation of the sediment in the rainwater in the precipitation treatment chamber, and the position of the lowest opening of the plurality of outflow valves should be the minimum storage water level. The outflow valve can be installed so as to substantially coincide with the position where The bottom of the raw water treatment storage tank is formed in a hopper shape so that the sedimentary mud can be easily guided to the discharge port. The reason why the partition plate is provided near the precipitation treatment chamber is to smooth the flow of the raw treated water at the start of discharging the accumulated mud. Further, the multi-tiered inclined plates facilitate separation and sedimentation of the sediment, and the sediment is guided or dropped to the bottom of the tank. The position of the lowest hole of the outflow valve regulates the minimum water level of the raw water treatment storage tank.

According to the present invention, a plurality of filter media having different filter media diameters can be filled on the support material arranged at the bottom of the filter tank from the upper layer to the lower layer of the filter media having a large filter media diameter to a small filter media diameter. The reason why the filter media are arranged in this order is to prevent clogging. Here, as a large-sized filter medium, a diameter of 5
The small filter medium has a diameter of 20 mm and a diameter of 1 to 2 mm. As the material, for example, gravel, small pebbles, and filter sand are used.

According to the present invention, the accumulated mud is discharged from the sludge discharge port of the raw water treatment storage tank, and the treated raw water is discharged from the storage chamber to the filtration tank.
The purified treated water can be sent from the filtration layer by natural flow of water without using electric energy or the like.

[0012]

In the rainwater purification treatment tank of the present invention, the sediment content of rainwater collected in the sedimentation treatment chamber of the raw water treatment storage tank is separated and settled, and the treated raw water is stored in the storage chamber. In addition, the outflow valve controls the outflow amount of the treated raw water to the filtration tank, and the discharge valve discharges the accumulated mud at the bottom of the raw water treatment storage tank. The treated raw water having the adjusted outflow amount in the filtration tank is purified.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of a rainwater purification treatment tank of the present invention. The rainwater purification treatment tank is provided with a precipitation treatment chamber 1 for separating and precipitating sediments of collected rainwater and a storage chamber 2 for storing treated raw water. The raw water treatment storage tank 3 and the filtration tank 4 for filtering the treated raw water flowing out from the raw water treatment storage tank 3.
The precipitation treatment chamber 1 and the storage chamber 2 are separated by a partition plate 5, and an opening 6 is provided between the lower end of the partition plate 5 and the bottom of the raw water treatment storage tank 3. A discharge valve 7 for discharging accumulated mud is provided at the bottom of the raw water treatment storage tank 3,
Further, a plurality of outflow valves 8 for adjusting the outflow amount of the treated raw water to the filtration tank 4 are provided. Here, the discharge valve 7 is a cylindrical guide plate 9
And a plug 11 that is engaged with the floating body 10, guided in the guide plate 9, and reciprocates according to the vertical movement of the water level. The outflow valve 8 has a plurality of openings provided at intervals in the longitudinal direction. It includes a guide plate 14 having 13 and a stopper 16 which is engaged with the floating body 15, guided in the guide plate 14, and reciprocates depending on the water level. The floating body 10 and the plug body 11, and the floating body 15 and the plug body 16 are engaged with each other via a rope 28 and a rope 29, respectively. In addition, the rope 28 toward the outflow valve 8 changes its direction by 180 ° via the pulley 12, so that the discharge valve 7
The outflow valve 8 and the outflow valve 8 are opened and closed in the opposite directions with respect to the fluctuation of the water level.

When the water level in the raw water treatment storage tank 3 fluctuates between the illustrated maximum storage water level and the maximum storage water level, the number of outflow valves in which the floating body of the outflow valve moves up and down according to the water level difference increases or decreases. However, the outflow rate of the treated raw water to the filtration tank 4 is determined by the change of the total area of the outflow ports and the water level difference between each outflow pipe and the water surface, and is adjusted to be as constant as possible. Further, when the water level exceeds the maximum storage water level and reaches the wash water level, the plug 11 of the discharge valve 7 is fitted into the sludge discharge port 17,
From the closed state to the open state of the sludge discharge port 17, discharges the accumulated mud from the sludge discharge port 17 to the sludge discharge pipe 19, and the outflow valve 8 causes the flow of the outflow pipe 20 to the filtration tank 4. The state in which the outlet 18 is opened is changed to the state in which it is closed. In FIG. 1, the amount of water between the maximum storage water level and the minimum storage water level is the amount of water to be purified, and the discharge valve 7 is fully opened at the cleaning water level to effectively discharge the accumulated mud by utilizing it as a water head. The precipitation treatment tank 1 is provided with a plurality of inclined plates 21.

In the filter tank 4, a 10-mm filter medium 23 and a 1-mm filter medium 24 are laid on a support member 22 made of gravel, small pebbles or the like as a material. The water level 25 in the filtration tank 4 is kept as constant as possible, and the purification process is performed. Purified treated water that has been treated is the supply pipe 2
Sent to 6.

[0016]

According to the present invention, the outflow valve provided in the raw water treatment storage tank can regulate the outflow amount of the treated raw water to the filtration tank as constant as possible, and the stable filtration processing can be performed. In addition, the mud accumulated on the bottom of the raw water treatment storage tank can be discharged using the water head.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

[Explanation of symbols]

 1 Settling treatment chamber 2 Storage chamber 3 Raw water treatment storage tank 4 Filtration tank 5 Partition plate 6 Opening 7 Discharge valve 8 Outflow valve 9 Guide plate 10 Floating body 11 Plug body 12 Pulley 13 Open hole 14 Guide plate 15 Floating body 16 Plug body 17 Discharge Mud port 18 Outlet port 19 Drainage pipe 20 Outflow pipe 21 Inclined plate 22 Support material 23 Filter medium 24 Filter medium 25 Water level 26 Supply pipe 27 Hopper 28 Rope 29 Rope

Claims (6)

[Claims] 1. A raw water treatment storage tank comprising a settling treatment chamber for separating and precipitating sediments of collected rainwater and a storage chamber for storing treated raw water, and treated raw water discharged from the raw water treatment storage tank. It comprises a filtration tank for filtration treatment, and the precipitation treatment chamber and the storage chamber are separated by a partition plate, and an opening is provided between the lower end of the partition plate and the bottom of the raw water treatment storage tank.
A rainwater purification device characterized in that a discharge valve for discharging accumulated mud is provided at the bottom of the raw water treatment storage tank, and a plurality of outflow valves for adjusting the outflow amount of the treated raw water to the filtration tank are provided in the raw water treatment storage tank. Processing tank. 2. A raw water treatment storage tank comprising a settling treatment chamber for separating and precipitating the sediment of the collected rainwater and a storage chamber for storing the treated raw water, and the treated raw water discharged from the raw water treatment storage tank. It comprises a filtration tank for filtration treatment, and the precipitation treatment chamber and the storage chamber are separated by a partition plate, and an opening is provided between the lower end of the partition plate and the bottom of the raw water treatment storage tank.
A discharge valve for discharging accumulated mud is provided at the bottom of the raw water treatment storage tank, and a plurality of outflow valves for adjusting the outflow amount of the treated raw water to the filtration tank are provided in the raw water treatment storage tank. It comprises a guide plate and a stopper engaged with the floating body, guided in the guide plate, and reciprocating depending on the water level, and the outflow valve has a plurality of openings provided at intervals in the longitudinal direction. A rainwater purification tank comprising: a guide plate and a plug body that is engaged with a floating body, is guided into the guide plate, and reciprocates depending on whether the water level rises or falls. 3. A raw water treatment storage tank comprising a settling treatment chamber for separating and precipitating collected sediment of rainwater and a storage chamber for storing treated raw water, and treated raw water discharged from the raw water treatment storage tank. It comprises a filtration tank for filtration treatment, and the precipitation treatment chamber and the storage chamber are separated by a partition plate, and an opening is provided between the lower end of the partition plate and the bottom of the raw water treatment storage tank.
A discharge valve for discharging accumulated mud is provided at the bottom of the raw water treatment storage tank, and an outflow valve for adjusting the outflow amount of the treated raw water to the filtration tank is installed in the raw water treatment storage tank. The discharge valve comprises a cylindrical guide plate and a plug body which is engaged with the floating body and guided in the guide plate and reciprocates depending on the vertical direction of the water level. A guide plate having a plurality of openings provided at a position, and a plug body that is engaged with the floating body, guided in the guide plate, and reciprocates depending on the water level up and down, and stores the water level in the raw water treatment storage tank. When it fluctuates between the maximum water level and the minimum storage water level, the outflow amount of the treated raw water to the filtration tank is kept as constant as possible by adjusting the number of outlets in which the floating bodies of the plurality of outflow valves move up and down. To the purified water level by adjusting the water level above the maximum storage water level. In this case, the discharge valve moves from the state in which the plug body closed the mud discharge port to the state in which the mud discharge port is opened, discharges the accumulated mud from the mud discharge port, and the outflow valve flows to the filtration tank. A rainwater purification treatment tank characterized in that the outlet is moved from the open state to the closed state. 4. The bottom part of the raw water treatment storage tank is formed into a hopper shape, and the bottom of the hopper shape is provided with a sludge discharge port, and the partition plate is a sedimentation treatment chamber so that the discharge port is located on the storage chamber side. A multi-stage inclined plate for accelerating the separation and sedimentation of sediment in rainwater is provided near the sedimentation treatment chamber, and the lowest opening of the plurality of outflow valves is set to the minimum storage water level. The outflow valve is installed so as to substantially coincide with the position.
The rainwater purification treatment tank according to claim 3. 5. The method according to claim 1, wherein a plurality of filter media having different filter media diameters are filled on a support material disposed at the bottom of the filter tank from an upper layer to a lower layer having a large filter media diameter to a small filter media diameter. The rainwater purification treatment tank described in 4. 6. The method of discharging the accumulated mud from the mud discharge port of the raw water treatment storage tank, flowing out the treated raw water from the storage chamber to the filtration tank, and sending the purified treated water from the filtration layer by natural flow of water. The rainwater purification treatment tank according to claim 1.