JP2008002251A - Reusing water supply system of rainwater and life miscellaneous waste water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reusing water supply system of rainwater and life miscellaneous waste water, capable of maintaining an always optimal water quality environment, by easily and properly selecting a kind and capacity of a water quality improver in response to a water quality of inflow water, while facilitating even installation and maintenance, by simplifying and miniaturizing the whole system constitution. <P>SOLUTION: This reusing water supply system is composed of units 17 and 18 capable of mutually connecting and separating a plurality of cartridges 19A, 19B and 19C of arranging a water quality improver storage part respectively installed in a tip part of a rainwater pipe 3 for taking the rainwater in a reclaimed water storage tank 1 capable of using stored reclaimed water as intermediate water by pumping out the water by a storage pump 11 and a miscellaneous waste water pipe 4 for taking in the miscellaneous waste water, in a coaxially stacking form in the flowing water line direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention purifies and regenerates rainwater and household wastewater from toilets, washrooms, baths, kitchens, etc., and uses the reclaimed water for home life such as water for disaster prevention such as sprinklers, washing water for flush toilets and watering. The present invention relates to a reuse water supply system for rainwater and domestic miscellaneous wastewater that is configured to be used as medium water such as miscellaneous water, garden water, and cooling water for a house roof.

  As described above, a system that reuses both rainwater and domestic wastewater as a medium water source is very effective and meaningful for the future reduction of water supply sources and energy saving for global warming countermeasures.

  By the way, a water supply system that reuses both rainwater and domestic wastewater as a medium water source pumps rainwater into the common reclaimed water storage tank, rainwater flow path for taking rainwater, livelihood wastewater flow path for taking domestic wastewater, and reclaimed water. In general, it is configured to include a water supply passage with a pump for feeding water to various types of intermediate water use destinations as described above. In this type of water supply system, rainwater and domestic wastewater that have completely different water qualities are used as reclaimed water, so that the quality of rainwater and domestic wastewater can be improved (purified). Indispensable.

  In response to such a request for water quality improvement, a fluidized bed type adsorber and a fixed bed type adsorber filled with activated carbon are attached to the tip of the intake channel for household wastewater, and a sterilant is contained in the tank. The sterilizer is attached to a float that floats on the surface of the water so that the sterilant is brought into the tank and comes into contact with the stored water, and the daily wastewater taken through the intake channel passes through the adsorber. Here, after the adsorbed substances are adsorbed and removed by activated carbon and purified, they are introduced into the tank, and rainwater and household wastewater introduced into the tank are sterilized by contacting with the sterilizing agent in the sterilizer. A reuse water supply system for rainwater and domestic wastewater configured to be purified has been proposed (see, for example, Patent Document 1).

  Japanese Patent No. 3530441

  However, in the conventional water supply system having the configuration shown in Patent Document 1, the structure of the storage part for the water quality improver such as the activated carbon in the adsorber and the sterilant in the sterilizer is complicated and large. Therefore, the structure of the entire system becomes complicated and large, and the cost becomes high, and the installation and maintenance of these water quality improvers becomes difficult, as well as the water quality of rainwater and domestic wastewater. Because it is not possible to easily select the type and capacity of the water quality improver according to the contents of the water, it is not possible to maintain an appropriate water quality environment depending on the quality of the influent water. There is a problem that unfavorable situations in terms of hygiene and environment are likely to occur when using water as middle water.

  The present invention has been made in view of the above-described circumstances. In addition to simplification and downsizing of the configuration of the entire system, and easy installation and maintenance, the water quality can be improved according to the quality of the influent water. The purpose is to provide a reused water supply system for rainwater and domestic wastewater that can maintain the optimum water quality environment by easily and appropriately selecting the type and capacity of the improver.

  In order to achieve the above-mentioned object, a reuse water supply system for rainwater and domestic wastewater according to the present invention includes a tank for reclaimed water storage, a rainwater flow path for taking rainwater into the tank, and a life for taking domestic wastewater into the tank. A miscellaneous drainage channel and a water supply channel with a pump for pumping the reclaimed water stored in the tank and using it as intermediate water. And a reusable water supply system for rainwater and domestic wastewater, each of which is provided with a container for containing a water quality improving agent that improves the quality of the water by contact with domestic wastewater. The water quality-improving agent container is composed of a unit that can connect and separate a plurality of cartridges arranged coaxially along the streamline direction.

  According to the present invention having the above-described characteristic configuration, the water quality improver containing portions of the rainwater flow path and the daily wastewater flow path are united in a form in which a plurality of cartridges are stacked coaxially along the flow line direction. Therefore, compared with the conventional system shown in Patent Document 1, the configuration of the entire system can be simplified and miniaturized, and the installation of these water quality improvers, replacement of the consumed water quality improvers, and different water quality improvers can be achieved. Maintenance such as replacement is also very easy. In addition, depending on the quality of the influent water introduced into the tanks such as rainwater and domestic wastewater, it can be replaced with a cartridge containing different types of water quality improvers, or multiple cartridges containing the same type of water quality improvers can be placed in parallel. Connect and use multiple (multiple types) cartridges containing different types of water quality improvers, and select the water quality improvement performance and / or capacity of the entire unit appropriately. Can be adjusted. Therefore, the reclaimed water in the tank can always be maintained in an optimal water quality environment regardless of the influent water having any water quality and the amount of influent water. There exists an effect that generation | occurrence | production of the malfunction etc. in the hygiene aspect at the time of utilization and an environmental aspect can be avoided.

  In the reuse water supply system for rainwater and domestic wastewater according to the present invention, the plurality of cartridges constituting the water quality improving agent storage unit are colored in different colors according to the type of water quality improving agent to be stored (claim) Item 2) makes it possible to recognize the type of water quality improving agent contained in the cartridge correctly at a glance in appearance, and to prevent inconveniences such as deterioration in water quality improving performance due to misuse of the water quality improving agent. In addition, management of a large number of water quality improver containing cartridges can be performed accurately and easily.

  In addition, when a plurality of cartridges constituting the water quality improving agent storage unit are provided with backflow prevention means such as slits, respectively, the rainwater flow path and the daily wastewater flow path are in a water-stopped state. Further, it is possible to reliably prevent the disadvantage that the recycled water in the tank flows backward to the upstream side.

  Furthermore, in the reused water supply system for rainwater and domestic wastewater according to the present invention, a reclaimed water storage tank is provided with a water supply mechanism for holding and controlling the stored water level in the tank at a set level (Claim 4). Therefore, when there is no inflow of rainwater or household wastewater, or when the inflow is very small, it is possible to replenish clean water and keep the stored water level in the tank above the set level. Thus, the use of reclaimed water (medium water) can be secured stably even during drought.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view showing an outline of the entire reuse water supply system for rainwater and domestic wastewater according to the present invention, and FIGS. 2 to 4 are an enlarged perspective view, a longitudinal sectional view, and a plan view of main parts. In these drawings, reference numeral 1 denotes a tank for storing reclaimed water that is installed stationary on the ground or buried in the soil, and an overflow port 2 is provided in the upper part of the side wall of the tank 1. The upper water level HWL of the tank 1 is defined by the mouth 2. The tank 1 has a rainwater pipe 3 for forming a rainwater flow path for taking in rainwater and a miscellaneous drainage pipe 4 for forming a livelihood drainage flow path for taking in domestic wastewater. It is inserted downward through an opening 1A with a lid formed at 1W.

  Rainwater collected in the rainwater tank 7 from the roof wall 6 of the residential building A through the vertical pipe 6 is guided to the rainwater pipe 3 and the miscellaneous drainage pipe 4 includes a toilet or a washroom. The household miscellaneous wastewater collected in the miscellaneous drainage basin 9 through a plurality of pipes 8 from a bath, kitchen, etc. is guided. A filter layer (not shown) such as a fibrous filter medium covering the material and its surface is provided. For example, a pipe 24 for joining rainwater collected by a rainwater collector 23 installed on the ground may be connected to the rainwater tank 7.

  In the tank 1, a water intake pipe 10 that draws out the reclaimed water stored in the tank 1 connected to a water intake port of a pumping pump 11 installed and fixed on the upper wall 1 </ b> W of the tank 1 is in a vertically downward posture. A middle water supply pipe 12 that forms a middle water supply flow path for using the reclaimed water pumped out as intermediate water is connected to the discharge port of the pumping pump 11 while being inserted. In the middle water supply pipe 12, various kinds of water are reused for reuse such as water for disaster prevention such as sprinklers, household water such as washing water for flush toilets and water spray, garden water, and cooling water for residential roofs. A water supply pipe 13 to the use system is connected in communication. A strainer (not shown) is provided at the tip of the water intake pipe 10 to prevent entry of foreign matters such as dust.

  In addition, a water supply pipe 14 that forms a supply flow path for clean water is connected to the tank 1 through an on-off valve 15, and the stored water level in the tank 1 is lower than a preset lower limit water level LWL. When this happens, the open / close valve 15 is automatically opened by the lowering operation of the ball tap 16 to replenish clean water, thereby maintaining the retained water level in the tank 1 at or above the lower limit water level LWL. Is provided.

  In the rainwater and domestic wastewater reuse water supply system having the basic configuration as described above, water quality improver containing units 17 and 18 are attached to the distal ends of the rainwater pipe 3 and the miscellaneous drainage pipe 4, respectively. As clearly shown in FIG. 5, each of these units 17 and 18 accommodates different types of water quality improvers, and a plurality (a plurality of types) of taper made of resin are arranged in a stacked configuration on the same axis along the streamline direction. Cylindrical cartridges 19A, 19B, and 19C are configured to be separable through female and male threaded portions 20a, 20b, and 20c formed at both axial ends of the cartridges 19A to 19C. In the present embodiment, three types of cartridges 19A to 19C are shown, but four or more types may be used. )

  Here, the three types of cartridges 19A to 19C prepared in the present embodiment will be described in detail. In the cartridge 19A, a granular activated carbon 21A formed in a cylindrical shape as an example of a water quality improving agent is accommodated concentrically. The cartridge 19B has a solid chlorine 21B formed in a cylindrical shape as another example of the water quality improving agent accommodated and held concentrically therein, and the cartridge 19C has a water quality inside. As another example of the improving agent, a surfactant 21C such as an ion exchange resin is accommodated and fixed. Each of the cartridges 19A to 19C is formed in a congruent shape having the same diameter and the same length, and is colored in a different color corresponding to the type of the water quality improving agent to be accommodated. Slits 22a, 22b, and 22c are formed as an example of the backflow prevention means on the peripheral wall portions near the flowing water port portions of -19C.

  In the present embodiment, as the water quality improver containing unit 17 at the tip of the rainwater pipe 3, the two cartridges 19 </ b> A and 19 </ b> B are connected, and the water quality improving containing unit 18 at the tip of the miscellaneous drain pipe 4. As an example of use, three of the cartridges 19A, 19B, and 19C are shown. In addition, three types of cartridges 19A to 19C may be used in any combination.

  In the rainwater and domestic wastewater reuse water supply system configured as described above, rainwater collected at the roof ridge 5 of the residential building A or the like passes through the vertical pipe 6 and / or in the rainwater collector 23. The collected rainwater is collected in the rainwater trough 7 through the pipe 24, and the rainwater filtered here is introduced into the tank 1 through the rainwater pipe 3, and is also discharged from the toilet, washroom, bath, kitchen, etc. Drainage is collected in a miscellaneous drain 9 through a plurality of pipes 8, and domestic miscellaneous drainage filtered here is introduced into the tank 1 through the miscellaneous drainage pipe 4.

  At the time of this introduction, the rainwater flowing through the rainwater pipe 3 passes through the two cartridges 19A and 19B in the water quality improving agent storage unit 17 in order and comes into contact with the granular activated carbon 21A and the solid chlorine 21B. After being purified and sterilized to improve water quality, it is introduced into the tank 1. Moreover, the domestic wastewater which has flowed through the miscellaneous drainage pipe 4 sequentially passes through the three cartridges 19A to 19C in the water quality improving agent storage unit 18 and contacts the granular activated carbon 21A and the solid chlorine 21B. In addition to being purified and sterilized, the activator is removed by contact with the surfactant 21C to improve the water quality, and then introduced into the tank 1. When the water level of the reclaimed water introduced and stored in the tank 1 becomes equal to or higher than the specified upper limit water level HWL, the surplus reclaimed water is discharged out of the tank 1 from the overflow port 2.

  In addition, when there is no inflow of rainwater or household wastewater, or when the inflow amount is very small and the stored water level in the tank 1 is lower than the preset lower limit water level LWL, the ball tap 16 is lowered. The on-off valve 15 is automatically opened by the operation, and the clean water is replenished from the clean water pipe 14, so that the water level of the stored reclaimed water (middle water) in the tank 1 is always kept at a stable level above the set water level even during drought, for example. Will be.

  The reclaimed water stored in the tank 1 above the set water level LWL is pumped to the middle water supply pipe 12 through the intake pipe 10 in accordance with the operation of the pumping pump 11 that is turned on and off as necessary. After being supplied, it is supplied as intermediate water to the water supply pipes 13 to various reuse systems through the intermediate water supply pipe 12 and used as water for disaster prevention such as sprinklers, washing water for flush toilets and water for household use such as sprinkling water. It will be reused as gardening water, house roof cooling water, and so on.

  In the reuse water supply system for rainwater and miscellaneous wastewater used as described above, the rainwater pipe 3 and the miscellaneous drainage pipe 4 each have a plurality of cartridges 19A to 19C stacked coaxially along the streamline direction. Since the improving agent storage units 17 and 18 are provided, the configuration of the entire system can be simplified and miniaturized easily, the water quality improving agent can be installed, the worn out water quality improving agent can be replaced, and different water quality improving agents can be replaced. Maintenance is also very easy.

  In addition, cartridges containing different types of water quality improvers, such as 19A and 19B, or the same type of water quality improvers were accommodated according to the quality of rainwater and domestic wastewater introduced into the tank 1. A plurality of cartridges, for example, 19A and 19A are connected in parallel, or a plurality of cartridges containing different types of water quality improvers, for example, 19A, 19C, 19B, and 19C are used in combination. Therefore, it is possible to appropriately select and adjust the water quality improvement performance and / or capacity of the entire unit, so that any influent water (rain water or domestic wastewater) having any water quality can be selected. Even if the amount of influent water is about the same level, the reclaimed water in the tank 1 can always be maintained in an optimum water quality environment, and in terms of hygiene and environment when using the reclaimed water as intermediate water You can avoid the occurrence of such condition.

  Further, since the plurality of cartridges 19A to 19C are colored in different colors corresponding to the type of the water quality improving agent accommodated in them, the type of the water quality improving agent accommodated in each cartridge 19A to 19C is selected. Appearance can be recognized correctly at a glance, and it is possible not only to prevent inconveniences such as deterioration of water quality improvement performance due to misuse of water quality improvers, but also to manage a large number of water quality improver containing cartridges 19A to 19C. Can be performed accurately and easily.

  Further, since the plurality of cartridges 19A to 19C are formed with slits 22a, 22b, and 22c for preventing backflow, even when the rainwater pipe 3 and the miscellaneous drainage pipe 4 are in a water shut-off state, The inconvenience that the reclaimed water flows backward to the rainwater pipe 3 and the miscellaneous drainage pipe 4 can also be reliably prevented.

  In the above embodiment, three types of water quality improvers, granular activated carbon 21A, solid chlorine 21B, and surfactant 21C, are described as being housed in the three cartridges 19A to 19C. A cartridge containing an agent may be additionally prepared, or a cartridge containing activated carbon having different properties or activated carbon may be additionally prepared. In addition, only a single cartridge may be used.

  It is a schematic perspective view which shows the outline | summary of the whole reuse water supply system of the rainwater and domestic wastewater which concern on this invention.   It is an expansion perspective view of the principal part in a system same as the above.   It is an expanded vertical sectional view of the principal part in a system same as the above.   It is an enlarged plan view of the principal part in a system same as the above.   It is an expanded vertical sectional view of the principal part in a system same as the above.

Explanation of symbols

1 Reclaimed water storage tank 3 Rainwater pipe (rainwater flow path)
4 Miscellaneous drainage pipe (living drainage channel)
11 Pumping pump 12 Middle water supply pipe (water supply flow path)
14 Water pipe (component of water supply mechanism)
15 On-off valve (component of water supply mechanism)
16 Ball tap (component of water supply system)
17, 18 Water quality improver storage unit 19A, 19B, 19C Cartridge 21A Granular activated carbon (an example of water quality improver)
21B solid chlorine (an example of a water quality improver)
21C Surfactant (an example of a water quality improver)
22a, 22b, 22c Backflow prevention slit

Claims (4)

A reclaimed water storage tank, a rainwater flow path for taking rainwater into the tank, a daily wastewater flow path for taking miscellaneous wastewater into the tank, and a pumped water that pumps the reclaimed water stored in the tank and uses it as intermediate water A water supply flow path with a pump, and each of the rainwater flow path and the domestic wastewater flow path is provided with a water quality improver containing portion for improving the water quality by contact with rainwater and domestic wastewater drainage. A reusable water supply system for rainwater and household wastewater.
The water quality improving agent storage part of each of the rainwater flow path and the domestic wastewater flow path is composed of a unit capable of connecting and separating a plurality of cartridges arranged coaxially along the flow line direction. Reuse water supply system of rainwater and household wastewater.   The reused water supply system for rainwater and household wastewater according to claim 1, wherein a plurality of cartridges constituting the water quality improving agent storage unit are colored in different colors corresponding to the type of water quality improving agent to be stored.   The reused water supply system for rainwater and miscellaneous wastewater according to claim 1 or 2, wherein a plurality of cartridges constituting the water quality improving agent storage unit are provided with backflow prevention means.   The reclaimed water storage tank is provided with a water supply mechanism for holding and controlling the stored water level in the tank at a set level. Use water supply system.

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