Wastewater recycling apparatus and car wash wastewater recycling apparatus

The present invention relates to a wastewater recycling device and a car wash wastewater recycling device that reuse wastewater after a car wash of an automobile or the like, and more particularly to a wastewater recycling device and a car wash wastewater recycling device that prevent an offensive odor generated from the reused water.

Recently, at gasoline service stations, there is a growing tendency to install car wash wastewater recycling equipment that purifies and reuses car wash wastewater for the purpose of saving expensive water and sewage charges, controlling wastewater, and preserving the environment by reducing the amount of wastewater. ing. As the car wash wastewater recycling device, the wastewater circulation treatment device of the car wash machine described in Patent Document 1 and the wastewater purification device of the car wash machine described in Patent Document 2 are known. The car wash wastewater recycling device described in these prior arts is configured to purify the wastewater by pumping the wastewater collected in the wastewater storage tank and passing it through a plurality of filters. In the car wash wastewater recycling device described in these patent documents, the water pumped up from the storage tank is purified by the first filter, the purified water is temporarily stored in the primary tank, and the water in the primary tank is stored in the primary tank. It is configured to be purified by the filter of 2 and then supplied to the water supply tank.<patcit num="1"><text>Japanese Patent Application Laid-Open No. 8-192014</text></patcit><patcit num="2"><text>Japanese Unexamined Patent Publication No. 10-165953</text></patcit>

<p> Such wastewater after car wash is treated with chemicals such as coagulation and precipitation, but even though it is treated with chemicals, the wastewater after car wash contains wax components and chemical detergent components. In addition, since chemicals remain and bacteria are generated by long-term use, there is a problem that a strange odor is generated from treated water stored in a storage tank, a primary tank, a water supply tank, or the like.</p><p> The present invention has been made in view of the above points, and an object of the present invention is to provide a wastewater recycling device and a car wash wastewater recycling device capable of preventing the generation of offensive odors from recycled water. ..</p>

<p> The wastewater recycling device according to claim 1 is a wastewater recycling device that removes impurities contained in wastewater and the like and reuses the wastewater from which the impurities have been removed, and is deodorant composed of a metal mixture containing at least silver and cadmium. The purification means is configured to come into contact with the wastewater. This suppresses the generation of offensive odors from wastewater due to the bactericidal action of silver and cadmium.</p><p> In the wastewater recycling apparatus according to claim 2 and the wastewater recycling apparatus according to claim 1, the metal mixture contains copper, zinc, nickel, titanium, silicon, aluminum, zirconium in addition to silver and cadmium. , Manganese, iron, cobalt, nickel, cerium, tungsten, gold, platinum, palladium, rhodium, ruthenium and iridium. This refers to a substance that can have a deodorizing effect when combined with a metal mixture of silver and udomium.</p><p> The car wash wastewater recycling device according to claim 3 removes impurities contained in the wastewater after car wash discharged from the car wash facility, and reuses the drainage from which the impurities have been removed as car wash water in the car wash facility. In the car wash wastewater recycling device, the deodorant purification means composed of a metal mixture containing at least silver and cadmium is configured to come into contact with the wastewater. This is related to a car wash wastewater recycling device that reuses the wastewater after car wash discharged from the car wash equipment, and silver and cadmium are applied to impurities such as wax components and chemical detergent components contained in the wastewater after car wash. At least the contained metal mixture works effectively and the deodorizing effect can be enhanced.</p><p> The wastewater recycling apparatus according to claim 4 is the car wash wastewater recycling apparatus according to claim 3, wherein the metal mixture is copper, zinc, nickel, titanium, silicon, aluminum in addition to silver and cadmium. , Zirconium, manganese, iron, cobalt, nickel, cerium, tungsten, gold, platinum, palladium, rhodium, ruthenium and iridium. This refers to a substance that can have a deodorizing effect by being integrated with a metal mixture of silver and udomium, as in claim 3.</p>

<p> According to the wastewater recycling device and the car wash wastewater recycling device of the present invention, there is an effect that it is possible to effectively prevent the generation of offensive odors from the recycled water.</p>

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an overall configuration of a car wash wastewater recycling device as an example of a wastewater recycle device according to the present invention. This car wash wastewater recycling device includes a thread-wound filter 21 to 24 that removes impurities of insoluble components contained in the drainage in the car wash machine drain ditch 20 that stores wastewater from the automatic car wash machine, and this thread-wound filter 21. The activated carbon filter 25 to 28, which further removes the impurities of the dissolved component from the water from which the impurities of the insoluble component have been removed by ~ 24, and the drainage in the car wash machine drain groove 20 are sucked up through the thread-wound filter 21 ~ 24. , An automatic stop type pump 29 that sends it to the activated carbon filters 25 to 28, and a treated water storage tank 30 that stores the treated water filtered by the thread winding type filters 21 to 24 and the activated carbon filters 25 to 28 as car wash water. It is composed including and. The pincushion type filters 21 to 24, the activated carbon filters 25 to 28, and the automatic stop type pump 29 are provided in the casing 10. FIG. 2A is a sectional view taken along line AA of the casing 10 of FIG. 1, and FIG. 2B is a sectional view taken along line BB thereof.

The car wash machine drainage groove 20 includes a car wash machine drainage basin provided in an automatic car wash machine main body (not shown) to store drainage after car wash. The excess water from the car wash machine drainage ditch 20 is discharged to the outside through the drainage pipe. Instead of the car wash drainage ditch 20, the drainage for car wash may be taken in from the raw water tank that stores the water components separated by the oil / water separation tank permanently installed in the gas station or the like, or the drainage may be taken directly from the oil / water separation tank. You may try to pump up. The drainage stored in the car wash drainage ditch 20 is sucked into the automatic stop type pump 29 via the raw water inflow pipe 11 and the pincushion type filters 21 to 24. Four pincushion filters 21 to 24 are provided in parallel. A filter type filter may be used instead of the pincushion type filters 21 to 24. A check valve (not shown) is provided in the middle of the raw water inflow pipe 11 that connects the spool type filters 21 to 24 and the car wash machine drainage groove 20.

The car wash drainage in the car wash machine drainage groove 20 is sucked up by the automatic stop type pump 29 and passes through the pincushion type filters 21 to 24 to remove impurities of insoluble components. The automatic stop type pump 29 has a built-in flow rate switch and pressure switch, and automatically stops the pump operation when the flow rate falls below a predetermined value or the pressure rises above a predetermined value. The water purified by the pincushion type filters 21 to 24 flows into the automatic stop type pump 29 through the connecting pipe 12, and from there via the connecting pipe 13, the activated carbon filter arranged under the casing 10. It will be supplied from 25 to 28.

Activated carbon filters 25 to 28 are filters for removing dissolved components containing granular activated carbon as a main component, and a plurality of filters having the same structure according to the processing capacity thereof are provided. In this embodiment, four are provided, and the connecting pipe 13 on the upper side of each activated carbon filter 25 to 28 collects the primary filtered water discharged from the automatic stop type pump 29 via the branch pipe of each activated carbon filter 25. The water introduced into ~ 28 is purified by each activated carbon filter 25 ~ 28 and introduced into the treated water storage tank 30 via the connecting pipe 14 and the treated water introduction pipe 15. An integrated flow meter 50 is provided in the middle of the treated water introduction pipe 15 to measure the amount of treated water introduced into the treated water storage tank 30 through the treated water introduction pipe 15. The value of this integrated flowmeter 50 is equal to the amount of car wash water actually saved. The treated water storage tank 30 is permanently installed in the main body of the automatic car wash machine, and is configured to store ordinary tap water via the city water supply main 16. The treated water storage tank 30 is configured to store the treated water from the treated water introduction pipe 15, that is, the treated water filtered by the thread-wound filters 21 to 24 and the activated carbon filters 25 to 28. Generally, the water storage capacity of the treated water storage tank 30 is about 300 liters, but a water storage capacity other than this may be installed separately.

In the treated water storage tank 30, a ball tap 31 and a floating ball 32 for automatically stopping the water from the treated water introduction pipe 15, and tap water from the city water supply main 16 (normal water supply pipe). It is equipped with a ball tap 33 and a floating ball 34 to automatically stop the water supply. Therefore, water is supplied from both or one of the treated water storage tanks 30, and a predetermined amount of water is always stored. The inflow amount is adjusted so that the ratio of the amount of water flowing into the treated water storage tank 30 from the treated water introduction pipe 15 to the amount of water flowing into the treated water storage tank 30 from the city water supply main pipe 16 is approximately 8: 2. To do. According to this ratio, new tap water is supplied from the city water supply main 16 and used together with recycled water. In other words, the recycling rate is 80%. Therefore, the recycling rate can be variously changed by appropriately changing this ratio. The flow rate of the city water supply main 16 is controlled by adjusting the opening of a normal valve. It is undeniable that this ratio changes as the processing capacity decreases with the passage of time according to the amount of impurities accumulated in the spool type filters 21 to 24 and / and the activated carbon filters 25 to 28. .. When the processing capacity is reduced in this way, the filtration members of the pincushion type filters 21 to 24 and / and the activated carbon filters 25 to 28 may be replaced as appropriate.

The water in the treated water storage tank 30 is sent to a car wash machine, a car wash faucet, a watering faucet, etc. via a water pipe 17 by a treated water pressure pump 40. The treated water pressure pump 40 is capable of delivering 50 liters of water per minute. Therefore, when the treated water storage tank 30 is full, the car wash water can be continuously supplied for about 30 minutes. In reality, car wash water is not continuously supplied, so this level of treatment capacity is sufficient.

Needless to say, the capacities of each water tank and filter may be appropriately set and changed according to the capacities of the water treatment equipment. Further, in the above-described embodiment, the case where the treated water introduction pipe 15 and the city water supply main pipe 16 are provided with ball taps has been described, but both are combined, the flow rate is adjusted, and then the water is stopped by one ball tap. You may do so. Further, in the above-described embodiment, the two ball taps 31 and 33 are operated at the same water level, but the present invention is not limited to this, and one of them may be operated first.

According to this car wash wastewater recycling device, only one pump is provided, a first filtration means is provided on the suction port side of the pump, and a second filtration means is provided on the discharge port side of the pump. Since a tank for storing treated water after passing through the filtration means is not required and only one water storage tank needs to be provided, the car wash wastewater recycling device can be miniaturized. In addition, when the flow of treated water is stopped by the action of the automatic water stop valve means, the pump automatically stops the suction operation and the water supply operation accordingly, so that complicated on / off control linked with the car wash machine is not performed. The pump can be turned on and off automatically. As a result, the price of the main body of the car wash wastewater recycling device can be significantly reduced.

In the present invention, in each of the constituent means constituting the above-mentioned car wash wastewater recycling device, a portion that comes into contact with wastewater or treated water, for example, a car wash machine drainage ditch 20, a raw water inflow pipe 11, a thread-wound filter 21 to 24, activated carbon. Deodorant purification means 51 to 65 are provided in the filters 25 to 28, the treated water introduction pipe 15, the treated water storage tank 30, and the like. The deodorant purification means 51 to 65 are composed of a mixture of metals such as Ag (silver), Cu (copper), Zn (zinc), Cd (cadmium), and Ni (nickel). The shape of these metals is in a good film state. In addition, other shapes, for example, a rod (1 to 2 mm diameter) shape or a pellet shape may be used. The shape of the metal may be any shape as long as the contact area with water is the most efficient. In addition, the metal mixture must contain at least Ag (silver) and Cd (cadmium). That is, it is selected from Ag (silver), Cu (copper), Zn (zinc), Cd (cadmium), Ni (nickel), and is a mixture containing at least Ag (silver) and Cd (cadmium). It is desirable to be composed of.

The deodorant purification means 51 to 65 do not necessarily have to be provided in all places, but the car wash machine drainage groove 20 in front of the device, the raw water inflow pipe 11, the thread winding type filter 21 to 24, the activated carbon filter 25 to 28, and the treatment It is preferable to provide the water introduction pipe 15 and the treated water storage tank 30 in this order in order to enhance the deodorizing effect. Needless to say, it may be installed in a place other than the illustrated installation location.

The deodorizing and purifying means 51 is provided so as to be immersed in the untreated drainage in the car wash machine drainage groove 20 in the front stage of the device. In the deodorant purification means 52, when the car wash drainage in the car wash machine drainage groove 20 is sucked up by the automatic stop type pump 29 in the middle of the raw water inflow pipe 11 and flows into the pincushion type filters 21 to 24, the car wash drainage It is provided so that it comes into contact with metal. The deodorant purification means 53 to 56 are provided so as to come into contact with the car wash drainage flowing into the spool type filters 21 to 24. The deodorant purification means 57 to 60 are provided so as to come into contact with the primary filtered water discharged from the automatic stop type pump 29 and introduced into each of the activated carbon filters 25 to 28. The deodorant purification means 61 is provided in the middle of the treated water introduction pipe 15 so that the treated water that passes through the treated water introduction pipe 15 and is introduced into the treated water storage tank 30 comes into contact with the metal. The deodorant purification means 62 is provided near the outlet of the treated water introduction pipe 15 and is provided so as to come into contact with the treated water when it is introduced into the treated water storage tank 30. Further, the deodorant purification means 63 is provided near the outlet of the city water supply main 16, and is provided so as to come into contact with tap water when it is introduced into the treated water storage tank 30. The deodorant purification means 64, 65 are provided so as to be immersed in the treated water sent to the car wash machine, the car wash faucet, the watering faucet, and the like.

As described above, by providing the deodorizing and purifying means 51 to 65 at the points where they come into contact with the wastewater and the treated water in each of the constituent means constituting the car wash wastewater recycling device, the deodorization is caused by the effect of the metal ions generated by the metal mixture. The effect is enhanced and no offensive odor is generated.

In the above-described embodiment, the case where Ag (silver), Cu (copper), Zn (zinc), Cd (cadmium), and Ni (nickel) are used has been described, but other than this, titanium, silicon, and aluminum have been described. , Zirconium, manganese, iron, cobalt, nickel, cerium, tungsten, gold, platinum, palladium, rhodium, ruthenium and iridium may be contained.

<figref num="1">As an example of the wastewater recycling device according to the present invention, it is a figure which shows the whole structure of the car wash wastewater recycling device.</figref>

Code description

10 ... Casing 11 ... Raw water inflow pipe 12,13,14 ... Connecting pipe 15 ... Treated water introduction pipe 16 ... City water supply main 17 ... Water supply pipe 20 ... Car wash Machine drainage ditch 21 ~ 24 ... Thread winding type filter 25 ~ 28 ... Activated charcoal filter 29 ... Automatic stop type pump 30 ... Treated water storage tank 31,33 ... Ball tap 32,34 ... Floating ball 40 ... Treated water pressure feed pump 50 ... Integrated flow meter