US20170028351A1 - Systems and methods for water filtration - Google Patents
Systems and methods for water filtration Download PDFInfo
- Publication number
- US20170028351A1 US20170028351A1 US15/207,055 US201615207055A US2017028351A1 US 20170028351 A1 US20170028351 A1 US 20170028351A1 US 201615207055 A US201615207055 A US 201615207055A US 2017028351 A1 US2017028351 A1 US 2017028351A1
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- Prior art keywords
- filter
- water
- way valve
- outlet
- inlet
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 302
- 238000001914 filtration Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title description 3
- 239000002351 wastewater Substances 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims description 41
- 238000001223 reverse osmosis Methods 0.000 claims description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 238000005342 ion exchange Methods 0.000 claims description 4
- 239000013049 sediment Substances 0.000 claims description 4
- 239000008399 tap water Substances 0.000 abstract description 5
- 235000020679 tap water Nutrition 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 229940088594 vitamin Drugs 0.000 description 3
- 229930003231 vitamin Natural products 0.000 description 3
- 235000013343 vitamin Nutrition 0.000 description 3
- 239000011782 vitamin Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
- C02F1/003—Processes for the treatment of water whereby the filtration technique is of importance using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
- C02F9/20—Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/14—Pressure control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/26—Further operations combined with membrane separation processes
- B01D2311/2623—Ion-Exchange
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2311/2626—Absorption or adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/26—Further operations combined with membrane separation processes
- B01D2311/2649—Filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D2311/26—Further operations combined with membrane separation processes
- B01D2311/2684—Electrochemical processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/13—Specific connectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/18—Specific valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/50—Specific extra tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2317/00—Membrane module arrangements within a plant or an apparatus
- B01D2317/02—Elements in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2317/00—Membrane module arrangements within a plant or an apparatus
- B01D2317/08—Use of membrane modules of different kinds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/004—Seals, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/005—Valves
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/043—Treatment of partial or bypass streams
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/06—Mounted on or being part of a faucet, shower handle or showerhead
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/10—Location of water treatment or water treatment device as part of a potable water dispenser, e.g. for use in homes or offices
Definitions
- the disclosure generally relates to water filtration and more particularly relates to systems and methods for reverse osmosis water filtration.
- Point-of-use (POU) water treatment devices are designed to treat drinking water for use in the home. These devices can be attached to a faucet and/or installed under a sink. They differ from point-of-entry (POE) devices, which are installed on the water line as it enters the home and treats all the water in the building.
- POU Point-of-use
- POE point-of-entry
- RO reverse-osmosis
- FIG. 1 schematically depicts a water filtration system in accordance with one or more embodiments of the disclosure.
- FIG. 2 schematically depicts a water filtration system in accordance with one or more embodiments of the disclosure.
- FIG. 3 schematically depicts a water filtration system in accordance with one or more embodiments of the disclosure.
- the water filtration systems may comprise an under the sink RO water filtration system that is plumed into a building's water supply.
- the water filtration systems may include an RO device at least partially installed underneath a sink, with the tap water connection plumbed directly to the sink cold water supply line, and a waste water drain line connected directly to the sink drain, such as the p-trap.
- the water filtration systems may use a membrane to screen out chemicals, such as chloride and sulfate as well as most other contaminates found in the water supply.
- the water filtration systems may be used to filter any contaminates.
- the water filtration systems may provide the technical advantage and/or solution of providing filtered water. Moreover, the water filtration systems may provide the technical advantage and/or solution of little to no waste water.
- the water filtration system may include a reverse osmosis water treatment system 100 .
- the system 100 may include a source of water 102 , such as tap water from a sink's cold water supply line 104 . Any source of water 102 may be used herein.
- the system 100 also may include a water tank 106 , a filter system 108 , a filtered water tank 110 , a pump 112 , and a valve 114 .
- the water tank 106 may include a first inlet 116 , a second inlet 118 , and an outlet 120 .
- the first inlet 116 of the water tank 106 may be in fluid communication with the source of water 102 by way of a pipe 122 . In this manner, the water tank 106 may store water therein.
- the filter system 108 may comprise an inlet 124 , a first outlet 126 , and a second outlet 128 .
- the inlet 124 of the filtration system 108 may be in fluid communication with the outlet 120 of the water tank 106 by way of a pipe 130 .
- the first outlet 126 of the filter system 108 may be in fluid communication with the second inlet 118 of the water tank 106 by way of a pipe 132 .
- the first outlet 126 of the filter system 108 may supply waste water from the filter system 108 to the water tank 106 .
- the water tank 106 may include a mixture of water from the source of water 102 and waste water from the filter system 108 .
- the filtered water tank 110 may include an inlet 134 and an outlet 136 .
- the inlet 134 and the outlet 136 of the filtered water tank 110 may be one in the same, such as a two-way valve or the like.
- the inlet 134 and the outlet 136 of the filtered water tank 110 may be separate components.
- the inlet 134 of the filtered water 110 tank may be in fluid communication with the second outlet 128 of the filter system 108 by way of a pipe 138 . In this manner, the second outlet 128 of the filter system 108 may supply filtered water to the filtered water tank 110 .
- the outlet 136 of the filtered water tank 110 may be in fluid communication with a faucet 140 by way of a pipe 142 . In this manner, the outlet 136 of the filtered water tank 110 may supply the filtered water to the faucet 140 .
- the pump 112 may be disposed in fluid communication between the water tank 106 and the filter system 108 along the pipe 130 .
- the valve 114 may be disposed in fluid communication between the pump 112 and the filter system 108 along the pipe 130 .
- the valve 114 also may be in fluid communication with a drain 144 by way of a drain pipe 146 .
- the valve 114 may be a three-way valve or the like.
- the valve 114 may divert a first portion of water from the water tank 106 to the filter system by way of the pipe 130 .
- the first portion of water may comprise about 95% of the water that enters the valve 114 .
- valve 114 may divert a second portion of water from the water tank 106 to the drain 144 by way of the drain pipe 146 .
- the second portion of water may comprise about 5% of the water that enters the valve 114 . Any percentage of water may be supplied to the filter system 108 or diverted to the drain 144 .
- the majority of the water in the system 100 is filtered, with a minimal amount of water being disposed of via the drain 144 .
- the filter system 108 may comprise a first filter 148 , a second filter 150 , and a third filter 152 .
- the first filter 148 may be configured to receive water from the inlet 124 of the filter system 108 .
- the first filter 148 may filter the water and deliver a first filtered water to the second filter 150 .
- the second filter 150 may be configured to receive the first filtered water from the first filter 148 .
- the second filter 150 may bifurcate the first filtered water into a first portion and a second portion.
- the second filter 150 may be a reverse osmosis filter or the like.
- the first portion of the first filtered water may be supplied to the first outlet 126 of the filter system 108 .
- the first portion of the first filtered water may comprise the waste water that is delivered back to the water tank 106 via pipe 132 .
- the second portion of the first filtered water may be supplied to the third filter 152 .
- the third filter 152 may be configured to receive the filtered water from the second filter 150 , to further filter the water, and to deliver the filtered water to the second outlet 128 of the filter system 108 .
- the second portion of the first filtered water which is collectively filtered by the first filter 148 , the second filter 150 , and the third filter 152 , comprises the filtered water that is supplied the filtered water tank 110 via pipe 138 .
- the first filter 148 may comprise a sediment filter, a carbon filter, a KDF filter, or a combination thereof.
- the second filter 150 may comprise a reverse osmosis membrane.
- the third filter 152 may comprises a carbon filter, an ion exchange filter, a remineralization element, or a combination thereof. In other instances, the third filter 152 may be omitted. In such instances, the second filter 150 may be configured to filter and deliver the second portion of the first filtered water to the filtered water tank 110 . In yet other instances, additional filters may be disposed downstream of the third filter 150 before the filtered water tank 110 . Any number, type, and/or combination of filters may be used herein.
- 100% of the water that enters the first filter 148 may pass to the second filter 150 . In other instances, less than 100% of the water that enters the second filter 150 passes to the third filter 152 . For example, about 1% to about 30% of the water that enters the second filter 150 may pass to the third filter 152 , with the remaining water constituting the waste water that is delivered back to the water tank 106 via pipe 132 . In yet another embodiment, 100% of the water that enters the third filter 152 may pass to the filtered water tank 110 via pipe 138 . Any percentage of water may enter the first filter 148 , the second filter 150 , or the third filter 152 .
- water is supplied to the water tank 106 from the water source 102 via pipe 122 .
- the water source 102 may continually feed the water tank 106 as needed, leaving at least some space within the water tank 106 for waste water from the filter system 108 .
- a valve may be disposed along pipe 122 to control the flow of fluid to the water tank 106 .
- the pump 112 may pump the mixture of source water and waste water from the water tank 106 into the valve 114 .
- the valve 114 may then bifurcate a small portion of the water into the drain 144 and a majority of the water into the filtration system 108 . In this manner, most of the water is filtered and supplied to the filtered water tank 110 to be dispensed by the faucet 140 . A small portion of the waste water is recycled back to the water tank 106 by way of the pipe 132 to be mixed with the source water and the cycle continued.
- the system 100 may include additional components and functionality.
- the system 100 may include a UV treatment device, a heater, a chiller, and/or a carbonator.
- the system 100 may include devices capable of adding vitamins to the water and/or re-mineralizing the water.
- the system 100 may include a supply of electrical power, an electronic controller, and one or more sensors to monitor and control the dispensing of filtered water.
- FIG. 2 depicts an additional embodiment of a water filtration system comprising a reverse osmosis water treatment system 200 .
- the system 200 may include a source of water 202 , such as tap water from a sink's cold water supply line 204 . Any source of water 202 may be used herein.
- the system 200 also may include a water tank 206 , a filter system 208 , a filtered water tank 210 , a first pump 212 , and a second pump 214 .
- the water tank 206 may include a first inlet 216 , a second inlet 218 , a first outlet 220 , and a second outlet 222 .
- the first inlet 216 of the water tank 206 may be in fluid communication with the source of water 202 by way of a pipe 224 .
- the filter system 208 may include an inlet 226 , a first outlet 228 , and a second outlet 230 .
- the inlet 226 of the filtration system 208 may be in fluid communication with the first outlet 220 of the water tank 206 bay way of a pipe 232 .
- the first outlet 228 of the filter system 208 may be in fluid communication with the second inlet 218 of the water tank 206 by way of a pipe 254 .
- the first outlet 228 of the filter system 208 may supply waste water to the water tank 206 via pipe 254 .
- the water tank 206 may comprise a mixture of water from the source of water 202 and waste water from the filter system 208 .
- the filtered water tank 210 may include an inlet 234 and an outlet 236 .
- the inlet 234 and the outlet 236 of the filtered water tank 210 may be one in the same, such as a two-way valve or the like.
- the inlet 234 and the outlet 236 of the filtered water tank 210 may be separate components.
- the inlet 234 of the filtered water 210 tank may be in fluid communication with the second outlet 230 of the filter system 208 by way of a pipe 238 . In this manner, the second outlet 230 of the filter system 208 may supply filtered water to the filtered water tank 210 via pipe 238 .
- outlet 236 of the filtered water tank 210 may be in fluid communication with a faucet 240 by way of a pipe 242 . In this manner, the outlet 236 of the filtered water tank 210 may supply the filtered water to the faucet 240 via pipe 242 .
- the first pump 212 may be disposed in fluid communication between the water tank 206 and the filter system 208 along the pipe 232 .
- the first pump 212 may facilitate flow between the water tank 206 and the filter system 208 .
- the second pump 214 may be disposed in fluid communication between the water tank 206 and a drain 244 .
- the second outlet 222 of the water tank 206 may be in fluid communication with the second pump 214 .
- the second pump 214 may be configured to supply a portion of the water from the water tank 206 to the drain 244 by way of a drain pipe 246 .
- the filter system 208 may comprise a first filter 248 , a second filter 250 , and a third filter 252 .
- the first filter 248 may be configured to receive water from the inlet 226 of the filter system 208 .
- the first filter 248 may filter the water and deliver a first filtered water to the second filter 250 .
- the second filter 250 may be configured to receive the first filtered water from the first filter 248 .
- the second filter 250 may bifurcate the first filtered water into a first portion and a second portion.
- the second filter 250 may comprise a reverse osmosis filter or the like.
- the first portion of the first filtered water may be supplied to the first outlet 228 of the filter system 108 .
- the first portion of the first filtered water may comprise the waste water that is delivered back to the water tank 206 by way of the pipe 254 .
- the second portion of the first filtered water may be supplied to the third filter 252 .
- the third filter 252 may be configured to receive the filtered water from the second filter 250 , to further filter the water, and to deliver the filtered water to the second outlet 230 of the filter system 208 .
- the second portion of the first filtered water which is collectively filtered by the first filter 248 , the second filter 250 , and the third filter 252 , comprises the filtered water that is supplied the filtered water tank 210 by way of the pipe 238 .
- the first filter 248 may comprise a sediment filter, a carbon filter, a KDF filter, or a combination thereof.
- the second filter 250 may comprise a reverse osmosis membrane.
- the third filter 250 may comprises a carbon filter, an ion exchange filter, a remineralization element, or a combination thereof.
- the third filter 252 may be omitted.
- the second filter 250 may be configured to filter and deliver the second portion of the first filtered water to the filtered water tank 210 .
- additional filters may be disposed downstream of the third filter 250 before the filtered water tank 210 . Any number, type, and/or combination of filters may be used herein.
- 100% of the water that enters the first filter 248 may pass to the second filter 250 . In other instances, less than 100% of the water that enters the second filter 250 passes to the third filter 252 . For example, about 1% to about 30% of the water that enters the second filter 250 may pass to the third filter 252 , with the remaining water constituting the waste water that is delivered back to the water tank 206 via the pipe 254 . In yet another embodiment, 100% of the water that enters the third filter 252 may pass to the filtered water tank 210 via the pipe 238 . Any percentage of water may enter the first filter 248 , the second filter 250 , or the third filter 252 .
- water is supplied to the water tank 206 from the water source 202 via the pipe 224 .
- the water source 202 may continually feed the water tank 206 as needed, leaving at least some space within the water tank 206 for waste water from the filter system 208 .
- a valve may be disposed along pipe 224 to control the flow of water to the water tank 206 .
- the first pump 212 may pump the mixture of source water and waste water from the water tank 206 to the filter system 208 .
- the filter system 208 may filter a portion of the water, which may be supplied to the filtered water tank 210 to be dispensed by the faucet 240 .
- All of the waste water from the filter system 208 may be recycled back to the water tank 106 via the pipe 254 to be mixed with the source water and the cycle continued.
- the second pump 214 may empty a portion of the water from the water tank 206 to the drain 244 via the pipe 246 .
- the system 200 may include additional components and functionality.
- the system 200 may include a UV treatment device, a heater, a chiller, and/or a carbonator.
- the system 200 may include devices capable of adding vitamins to the water and/or re-mineralizing the water.
- the system 200 may include a supply of electrical power, an electronic controller, and one or more sensors to monitor and control the dispensing of filtered water.
- FIG. 3 depicts an additional embodiment of a water filtration system comprising a reverse osmosis water treatment system 300 .
- the system 300 may include a source of water 302 , such as tap water from a sink's cold water supply line 304 . Any source of water 302 may be used herein.
- the system 300 also may include a first three-way valve 306 , a filter system 308 , a filtered water tank 310 , a pump 312 , and a second three-way valve 314 .
- the first three-way valve 306 may include a first inlet 316 , a second inlet 318 , and an outlet 320 .
- the first inlet 316 of the first three-way valve 306 may be in fluid communication with the source of water 302 by way of a pipe 322 .
- the filter system 308 may comprise an inlet 324 , a first outlet 326 , and a second outlet 328 .
- the inlet 324 of the filtration system 308 may be in fluid communication with the outlet 320 of the first three-way valve 306 by way of a pipe 330 .
- the first outlet 326 of the filter system 308 may be in fluid communication with the second inlet 318 of the first three-way valve 306 by way of a pipe 332 .
- the first outlet 326 of the filter system 308 may supply waste water from the filter system 308 to the first three-way valve 306 .
- the first three-way valve 306 may mix water from the source of water 302 and waste water from the filter system 308 .
- the first three-way valve 306 may comprise a water tank or the like.
- the filtered water tank 310 may include an inlet 334 and an outlet 336 .
- the inlet 334 and the outlet 336 of the filtered water tank 310 may be one in the same, such as a two-way valve or the like.
- the inlet 334 and the outlet 336 of the filtered water tank 310 may be separate components.
- the inlet 334 of the filtered water 310 tank may be in fluid communication with the second outlet 328 of the filter system 308 by way of a pipe 338 . In this manner, the second outlet 328 of the filter system 308 may supply filtered water to the filtered water tank 310 via the pipe 338 .
- outlet 336 of the filtered water tank 310 may be in fluid communication with a faucet 340 by way of a pipe 342 . In this manner, the outlet 336 of the filtered water tank 310 may supply the filtered water to the faucet 340 via the pipe 342 .
- the pump 312 may be disposed in fluid communication between the first three-way valve 306 and the filter system 308 along the pipe 332 .
- the second three-way valve 314 may be disposed in fluid communication between the first three-way valve 306 and the filter system 308 along the pipe 332 .
- the second three-way valve 314 may be in fluid communication with a drain 342 by way of a drain pipe 344 .
- the second three-way valve 314 may include a first inlet 346 , a first outlet 348 , and a second outlet 350 . In this manner, the second three-way valve 314 may divert a first portion of water from the filter system 308 to the first three-way valve 306 by way of the second outlet 350 .
- the first portion of water may comprise about 75% of the water that enters the second three-way valve 314 .
- the second three-way valve 314 may divert a second portion of water from the filter system 308 to the drain 342 by way of the first outlet 348 and the pipe 344 .
- the second portion of water may comprise about 25% of the water that enters the second three-way valve 314 . Any percentage of water may be supplied to the first three-way valve 306 or diverted to the drain 342 . In this manner, the majority of the water in the system 300 is filtered, with a minimal amount of water being wasted.
- the system 300 may include a pressure reducer 352 disposed in fluid communication between the source of water 302 and the first three-way valve 306 along the pipe 322 .
- the pressure reducer 352 may provide the source water 302 to the first three-way valve 306 at a suitable pressure, such as 80 PSI. Any pressure may be used herein.
- the filter system 308 may comprise a first filter 354 , a second filter 356 , and a third filter 358 .
- the first filter 354 may be configured to receive water from the inlet 324 of the filter system 308 .
- the first fitter 354 may filter the water and deliver a first filtered water to the second filter 356 .
- the second filter 356 may be configured to receive the first filtered water from the first filter 354 .
- the second filter 356 may bifurcate the first filtered water into a first portion and a second portion.
- the second filter 356 may comprise a reverse osmosis filter to the like.
- the first portion of the first filtered water may be supplied to the first outlet 326 of the filter system 308 .
- the first portion of the first filtered water may comprise the waste water that is delivered back to the first three-way valve 306 by way of the pipe 332 .
- the second portion of the first filtered water may be supplied to the third filter 358 .
- the third filter 358 may be configured to receive the filtered water from the second filter 356 , to further filter the water, and to deliver the filtered water to the second outlet 328 of the filter system 308 .
- the second portion of the first filtered water which is collectively filtered by the first filter 248 , the second filter 250 , and the third filter 252 , comprises the filtered water that is supplied the filtered water tank 310 by way of the pipe 338 .
- the first filter 354 may comprise a sediment filter, a carbon filter, a KDF filter, or a combination thereof.
- the second filter 356 may comprise a reverse osmosis membrane.
- the third filter 358 may comprises a carbon filter, an ion exchange filter, a remineralization element, or a combination thereof. In other instances, the third filter 358 may be omitted. In such instances, the second filter 356 may be configured to filter and deliver the second portion of the first filtered water to the filtered water tank 310 . In yet other instances, additional filters may be disposed downstream of the third filter 358 before the filtered water tank 310 . Any number, type, and/or combination of filters may be used herein.
- 100% of the water that enters the first filter 354 may pass to the second filter 356 . In other instances, less than 100% of the water that enters the second filter 356 passes to the third filter 358 . For example, about 1% to about 30% of the water that enters the second filter 356 may pass to the third filter 358 , with the remaining water constituting the waste water that is delivered back to the first three-way-valve 306 by way of the pipe 332 . In yet another embodiment, 100% of the water that enters the third filter 358 may pass to the filtered water tank 310 . Any percentage of water may enter the first filter 354 , the second filter 356 , or the third filter 358 .
- water is supplied to the first three-way-valve 306 from the water source 302 via the pipe 322 .
- the pressure reducer 352 may provide the water to the first three-way-valve 306 at a suitable pressure.
- the water source 302 may continually feed the first three-way-valve 306 as needed.
- Waste water from the filter system 308 may mix with water from the water source 302 in the first three-way-valve 306 .
- the filter system 308 may filter a portion of the water, which may be supplied to the filtered water tank 310 to be dispensed by the faucet 340 .
- a small portion of the waste water from the filter system 308 may be recycled back to the first three-way-valve 306 via the pipe 332 to be mixed with the source water and the cycle continued.
- the second three-way-valve 314 may divert a portion of the waste water from the filter system 308 to the drain 342 via the drain pipe 344 .
- the system 300 may include additional components and functionality.
- the system 300 may include a UV treatment device, a heater, a chiller, and/or a carbonator.
- the system 300 may include devices capable of adding vitamins to the water and/or re-mineralizing the water.
- the system 300 may include a supply of electrical power, an electronic controller, and one or more sensors to monitor and control the dispensing of filtered water.
- the water filtration systems in FIG. 1-3 may significantly reduce operation cost and the environmental impact of wasted water as compared to conventional RO systems.
- the systems described in FIGS. 1-3 provide under the sink RO systems that waste less water than conventional RO systems.
- a conventional RO system may waste 70% to 90% of the water processed.
- the present systems may substantially reduce waste water to about 10% to 30%.
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Abstract
A water filtration systems may comprise an under the sink RO water filtration system that is plumed into a building's water supply. For example, the water filtration systems may include an RO device at least partially installed underneath a sink, with the tap water connection plumbed directly to the sink cold water supply line, and a waste water drain line connected directly to the sink drain, such as the p-trap.
Description
- The disclosure claims priority to and the benefit of U.S. patent application Ser. No. 14/809,526, filed Jul. 27, 2015, which is incorporated herein by reference.
- The disclosure generally relates to water filtration and more particularly relates to systems and methods for reverse osmosis water filtration.
- Due to increased levels of toxicity caused by chemicals found within the water supply, water filtration has become widespread within many homes. Point-of-use (POU) water treatment devices are designed to treat drinking water for use in the home. These devices can be attached to a faucet and/or installed under a sink. They differ from point-of-entry (POE) devices, which are installed on the water line as it enters the home and treats all the water in the building.
- Many households today have reverse-osmosis (RO) units installed. These devices use a membrane that screens out chemicals, such as chloride and sulfate as well as most other contaminates found in the water supply. RO systems are generally multi-stage systems and include an activated charcoal filter since RO does not remove volatile organic compounds. A RO system can remove particles down to 1 Angstrom. However POU RO systems can waste a substantial amount of water for every gallon that is treated. This is because RO purification at normal water pressure is roughly twenty percent efficient. Accordingly, there is a need for a POU RO system that provides filtered water while minimizing waste water.
- The detailed description is set forth with reference to the accompanying drawings. The use of the same reference numerals may indicate similar or identical items. Various embodiments may utilize elements and/or components other than those illustrated in the drawings, and some elements and/or components may not be present in various embodiments. Elements and/or components in the figures are not necessarily drawn to scale. Throughout this disclosure, depending on the context, singular and plural terminology may be used interchangeably.
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FIG. 1 schematically depicts a water filtration system in accordance with one or more embodiments of the disclosure. -
FIG. 2 schematically depicts a water filtration system in accordance with one or more embodiments of the disclosure. -
FIG. 3 schematically depicts a water filtration system in accordance with one or more embodiments of the disclosure. - Described below are embodiments of water filtration systems (as well as individual components of the water filtration systems). Methods of using the water filtration systems are also disclosed. In some instances, the water filtration systems may comprise an under the sink RO water filtration system that is plumed into a building's water supply. For example, the water filtration systems may include an RO device at least partially installed underneath a sink, with the tap water connection plumbed directly to the sink cold water supply line, and a waste water drain line connected directly to the sink drain, such as the p-trap. The water filtration systems may use a membrane to screen out chemicals, such as chloride and sulfate as well as most other contaminates found in the water supply. The water filtration systems may be used to filter any contaminates. In this manner, the water filtration systems may provide the technical advantage and/or solution of providing filtered water. Moreover, the water filtration systems may provide the technical advantage and/or solution of little to no waste water. These and other technical advantages and/or solutions will become apparent throughout the disclosure.
- In one embodiment, as depicted in
FIG. 1 , the water filtration system may include a reverse osmosiswater treatment system 100. Thesystem 100 may include a source ofwater 102, such as tap water from a sink's coldwater supply line 104. Any source ofwater 102 may be used herein. Thesystem 100 also may include awater tank 106, afilter system 108, a filteredwater tank 110, apump 112, and avalve 114. Thewater tank 106 may include afirst inlet 116, asecond inlet 118, and anoutlet 120. Thefirst inlet 116 of thewater tank 106 may be in fluid communication with the source ofwater 102 by way of apipe 122. In this manner, thewater tank 106 may store water therein. - The
filter system 108 may comprise aninlet 124, afirst outlet 126, and asecond outlet 128. Theinlet 124 of thefiltration system 108 may be in fluid communication with theoutlet 120 of thewater tank 106 by way of apipe 130. Also, thefirst outlet 126 of thefilter system 108 may be in fluid communication with thesecond inlet 118 of thewater tank 106 by way of apipe 132. In this manner, thefirst outlet 126 of thefilter system 108 may supply waste water from thefilter system 108 to thewater tank 106. As a result, thewater tank 106 may include a mixture of water from the source ofwater 102 and waste water from thefilter system 108. - The filtered
water tank 110 may include an inlet 134 and an outlet 136. In some instances, the inlet 134 and the outlet 136 of the filteredwater tank 110 may be one in the same, such as a two-way valve or the like. In other instances, the inlet 134 and the outlet 136 of the filteredwater tank 110 may be separate components. The inlet 134 of the filteredwater 110 tank may be in fluid communication with thesecond outlet 128 of thefilter system 108 by way of apipe 138. In this manner, thesecond outlet 128 of thefilter system 108 may supply filtered water to the filteredwater tank 110. In addition, the outlet 136 of the filteredwater tank 110 may be in fluid communication with afaucet 140 by way of apipe 142. In this manner, the outlet 136 of the filteredwater tank 110 may supply the filtered water to thefaucet 140. - The
pump 112 may be disposed in fluid communication between thewater tank 106 and thefilter system 108 along thepipe 130. In addition, thevalve 114 may be disposed in fluid communication between thepump 112 and thefilter system 108 along thepipe 130. Thevalve 114 also may be in fluid communication with adrain 144 by way of adrain pipe 146. In some instances, thevalve 114 may be a three-way valve or the like. Thevalve 114 may divert a first portion of water from thewater tank 106 to the filter system by way of thepipe 130. In some instances, the first portion of water may comprise about 95% of the water that enters thevalve 114. Moreover, thevalve 114 may divert a second portion of water from thewater tank 106 to thedrain 144 by way of thedrain pipe 146. in some instances, the second portion of water may comprise about 5% of the water that enters thevalve 114. Any percentage of water may be supplied to thefilter system 108 or diverted to thedrain 144. In a preferred embodiment, the majority of the water in thesystem 100 is filtered, with a minimal amount of water being disposed of via thedrain 144. - In some instances, the
filter system 108 may comprise afirst filter 148, asecond filter 150, and athird filter 152. Thefirst filter 148 may be configured to receive water from theinlet 124 of thefilter system 108. Thefirst filter 148 may filter the water and deliver a first filtered water to thesecond filter 150. Thesecond filter 150 may be configured to receive the first filtered water from thefirst filter 148. Thesecond filter 150 may bifurcate the first filtered water into a first portion and a second portion. Thesecond filter 150 may be a reverse osmosis filter or the like. The first portion of the first filtered water may be supplied to thefirst outlet 126 of thefilter system 108. In this manner, the first portion of the first filtered water may comprise the waste water that is delivered back to thewater tank 106 viapipe 132. The second portion of the first filtered water may be supplied to thethird filter 152. Thethird filter 152 may be configured to receive the filtered water from thesecond filter 150, to further filter the water, and to deliver the filtered water to thesecond outlet 128 of thefilter system 108. In this manner, the second portion of the first filtered water, which is collectively filtered by thefirst filter 148, thesecond filter 150, and thethird filter 152, comprises the filtered water that is supplied the filteredwater tank 110 viapipe 138. - In certain embodiment, the
first filter 148 may comprise a sediment filter, a carbon filter, a KDF filter, or a combination thereof. Thesecond filter 150 may comprise a reverse osmosis membrane. Thethird filter 152 may comprises a carbon filter, an ion exchange filter, a remineralization element, or a combination thereof. In other instances, thethird filter 152 may be omitted. In such instances, thesecond filter 150 may be configured to filter and deliver the second portion of the first filtered water to the filteredwater tank 110. In yet other instances, additional filters may be disposed downstream of thethird filter 150 before the filteredwater tank 110. Any number, type, and/or combination of filters may be used herein. - In certain embodiments, 100% of the water that enters the
first filter 148 may pass to thesecond filter 150. In other instances, less than 100% of the water that enters thesecond filter 150 passes to thethird filter 152. For example, about 1% to about 30% of the water that enters thesecond filter 150 may pass to thethird filter 152, with the remaining water constituting the waste water that is delivered back to thewater tank 106 viapipe 132. In yet another embodiment, 100% of the water that enters thethird filter 152 may pass to the filteredwater tank 110 viapipe 138. Any percentage of water may enter thefirst filter 148, thesecond filter 150, or thethird filter 152. - In operation, water is supplied to the
water tank 106 from thewater source 102 viapipe 122. Thewater source 102 may continually feed thewater tank 106 as needed, leaving at least some space within thewater tank 106 for waste water from thefilter system 108. In some instances, a valve may be disposed alongpipe 122 to control the flow of fluid to thewater tank 106. Thepump 112 may pump the mixture of source water and waste water from thewater tank 106 into thevalve 114. Thevalve 114 may then bifurcate a small portion of the water into thedrain 144 and a majority of the water into thefiltration system 108. In this manner, most of the water is filtered and supplied to the filteredwater tank 110 to be dispensed by thefaucet 140. A small portion of the waste water is recycled back to thewater tank 106 by way of thepipe 132 to be mixed with the source water and the cycle continued. - The
system 100 may include additional components and functionality. For example, thesystem 100 may include a UV treatment device, a heater, a chiller, and/or a carbonator. In addition, thesystem 100 may include devices capable of adding vitamins to the water and/or re-mineralizing the water. In certain embodiments, thesystem 100 may include a supply of electrical power, an electronic controller, and one or more sensors to monitor and control the dispensing of filtered water. -
FIG. 2 depicts an additional embodiment of a water filtration system comprising a reverse osmosiswater treatment system 200. Thesystem 200 may include a source ofwater 202, such as tap water from a sink's coldwater supply line 204. Any source ofwater 202 may be used herein. Thesystem 200 also may include awater tank 206, afilter system 208, a filteredwater tank 210, afirst pump 212, and asecond pump 214. Thewater tank 206 may include afirst inlet 216, asecond inlet 218, afirst outlet 220, and asecond outlet 222. Thefirst inlet 216 of thewater tank 206 may be in fluid communication with the source ofwater 202 by way of apipe 224. - The
filter system 208 may include aninlet 226, afirst outlet 228, and asecond outlet 230. Theinlet 226 of thefiltration system 208 may be in fluid communication with thefirst outlet 220 of thewater tank 206 bay way of apipe 232. In addition, thefirst outlet 228 of thefilter system 208 may be in fluid communication with thesecond inlet 218 of thewater tank 206 by way of apipe 254. In this manner, thefirst outlet 228 of thefilter system 208 may supply waste water to thewater tank 206 viapipe 254. As a result, thewater tank 206 may comprise a mixture of water from the source ofwater 202 and waste water from thefilter system 208. - The filtered
water tank 210 may include an inlet 234 and an outlet 236. In some instances, the inlet 234 and the outlet 236 of the filteredwater tank 210 may be one in the same, such as a two-way valve or the like. In other instances, the inlet 234 and the outlet 236 of the filteredwater tank 210 may be separate components. The inlet 234 of the filteredwater 210 tank may be in fluid communication with thesecond outlet 230 of thefilter system 208 by way of apipe 238. In this manner, thesecond outlet 230 of thefilter system 208 may supply filtered water to the filteredwater tank 210 viapipe 238. In addition, the outlet 236 of the filteredwater tank 210 may be in fluid communication with afaucet 240 by way of apipe 242. In this manner, the outlet 236 of the filteredwater tank 210 may supply the filtered water to thefaucet 240 viapipe 242. - The
first pump 212 may be disposed in fluid communication between thewater tank 206 and thefilter system 208 along thepipe 232. Thefirst pump 212 may facilitate flow between thewater tank 206 and thefilter system 208. Thesecond pump 214 may be disposed in fluid communication between thewater tank 206 and adrain 244. For example, thesecond outlet 222 of thewater tank 206 may be in fluid communication with thesecond pump 214. Thesecond pump 214 may be configured to supply a portion of the water from thewater tank 206 to thedrain 244 by way of adrain pipe 246. - In some instances, the
filter system 208 may comprise afirst filter 248, asecond filter 250, and athird filter 252. Thefirst filter 248 may be configured to receive water from theinlet 226 of thefilter system 208. Thefirst filter 248 may filter the water and deliver a first filtered water to thesecond filter 250. Thesecond filter 250 may be configured to receive the first filtered water from thefirst filter 248. Thesecond filter 250 may bifurcate the first filtered water into a first portion and a second portion. Thesecond filter 250 may comprise a reverse osmosis filter or the like. The first portion of the first filtered water may be supplied to thefirst outlet 228 of thefilter system 108. In this manner, the first portion of the first filtered water may comprise the waste water that is delivered back to thewater tank 206 by way of thepipe 254. The second portion of the first filtered water may be supplied to thethird filter 252. Thethird filter 252 may be configured to receive the filtered water from thesecond filter 250, to further filter the water, and to deliver the filtered water to thesecond outlet 230 of thefilter system 208. In this manner, the second portion of the first filtered water, which is collectively filtered by thefirst filter 248, thesecond filter 250, and thethird filter 252, comprises the filtered water that is supplied the filteredwater tank 210 by way of thepipe 238. - In certain embodiment, the
first filter 248 may comprise a sediment filter, a carbon filter, a KDF filter, or a combination thereof. Thesecond filter 250 may comprise a reverse osmosis membrane. Thethird filter 250 may comprises a carbon filter, an ion exchange filter, a remineralization element, or a combination thereof. In other instances, thethird filter 252 may be omitted. In such instances, thesecond filter 250 may be configured to filter and deliver the second portion of the first filtered water to the filteredwater tank 210. In yet other instances, additional filters may be disposed downstream of thethird filter 250 before the filteredwater tank 210. Any number, type, and/or combination of filters may be used herein. - In certain embodiments, 100% of the water that enters the
first filter 248 may pass to thesecond filter 250. In other instances, less than 100% of the water that enters thesecond filter 250 passes to thethird filter 252. For example, about 1% to about 30% of the water that enters thesecond filter 250 may pass to thethird filter 252, with the remaining water constituting the waste water that is delivered back to thewater tank 206 via thepipe 254. In yet another embodiment, 100% of the water that enters thethird filter 252 may pass to the filteredwater tank 210 via thepipe 238. Any percentage of water may enter thefirst filter 248, thesecond filter 250, or thethird filter 252. - In operation, water is supplied to the
water tank 206 from thewater source 202 via thepipe 224. Thewater source 202 may continually feed thewater tank 206 as needed, leaving at least some space within thewater tank 206 for waste water from thefilter system 208. In some instances, a valve may be disposed alongpipe 224 to control the flow of water to thewater tank 206. Thefirst pump 212 may pump the mixture of source water and waste water from thewater tank 206 to thefilter system 208. As discussed above, thefilter system 208 may filter a portion of the water, which may be supplied to the filteredwater tank 210 to be dispensed by thefaucet 240. All of the waste water from thefilter system 208 may be recycled back to thewater tank 106 via thepipe 254 to be mixed with the source water and the cycle continued. Thesecond pump 214 may empty a portion of the water from thewater tank 206 to thedrain 244 via thepipe 246. - The
system 200 may include additional components and functionality. For example, thesystem 200 may include a UV treatment device, a heater, a chiller, and/or a carbonator. In addition, thesystem 200 may include devices capable of adding vitamins to the water and/or re-mineralizing the water. In certain embodiments, thesystem 200 may include a supply of electrical power, an electronic controller, and one or more sensors to monitor and control the dispensing of filtered water. -
FIG. 3 depicts an additional embodiment of a water filtration system comprising a reverse osmosiswater treatment system 300. Thesystem 300 may include a source ofwater 302, such as tap water from a sink's coldwater supply line 304. Any source ofwater 302 may be used herein. Thesystem 300 also may include a first three-way valve 306, afilter system 308, a filteredwater tank 310, apump 312, and a second three-way valve 314. The first three-way valve 306 may include afirst inlet 316, asecond inlet 318, and anoutlet 320. Thefirst inlet 316 of the first three-way valve 306 may be in fluid communication with the source ofwater 302 by way of apipe 322. - The
filter system 308 may comprise aninlet 324, afirst outlet 326, and asecond outlet 328. Theinlet 324 of thefiltration system 308 may be in fluid communication with theoutlet 320 of the first three-way valve 306 by way of a pipe 330. In addition, thefirst outlet 326 of thefilter system 308 may be in fluid communication with thesecond inlet 318 of the first three-way valve 306 by way of apipe 332. In this manner, thefirst outlet 326 of thefilter system 308 may supply waste water from thefilter system 308 to the first three-way valve 306. The first three-way valve 306 may mix water from the source ofwater 302 and waste water from thefilter system 308. In some instances, the first three-way valve 306 may comprise a water tank or the like. - The filtered
water tank 310 may include an inlet 334 and an outlet 336. In some instances, the inlet 334 and the outlet 336 of the filteredwater tank 310 may be one in the same, such as a two-way valve or the like. In other instances, the inlet 334 and the outlet 336 of the filteredwater tank 310 may be separate components. The inlet 334 of the filteredwater 310 tank may be in fluid communication with thesecond outlet 328 of thefilter system 308 by way of apipe 338. In this manner, thesecond outlet 328 of thefilter system 308 may supply filtered water to the filteredwater tank 310 via thepipe 338. In addition, the outlet 336 of the filteredwater tank 310 may be in fluid communication with afaucet 340 by way of apipe 342. In this manner, the outlet 336 of the filteredwater tank 310 may supply the filtered water to thefaucet 340 via thepipe 342. - The
pump 312 may be disposed in fluid communication between the first three-way valve 306 and thefilter system 308 along thepipe 332. In addition, the second three-way valve 314 may be disposed in fluid communication between the first three-way valve 306 and thefilter system 308 along thepipe 332. The second three-way valve 314 may be in fluid communication with adrain 342 by way of adrain pipe 344. The second three-way valve 314 may include afirst inlet 346, afirst outlet 348, and asecond outlet 350. In this manner, the second three-way valve 314 may divert a first portion of water from thefilter system 308 to the first three-way valve 306 by way of thesecond outlet 350. In some instances, the first portion of water may comprise about 75% of the water that enters the second three-way valve 314. Moreover, the second three-way valve 314 may divert a second portion of water from thefilter system 308 to thedrain 342 by way of thefirst outlet 348 and thepipe 344. In some instances, the second portion of water may comprise about 25% of the water that enters the second three-way valve 314. Any percentage of water may be supplied to the first three-way valve 306 or diverted to thedrain 342. In this manner, the majority of the water in thesystem 300 is filtered, with a minimal amount of water being wasted. - In some instances, the
system 300 may include apressure reducer 352 disposed in fluid communication between the source ofwater 302 and the first three-way valve 306 along thepipe 322. Thepressure reducer 352 may provide thesource water 302 to the first three-way valve 306 at a suitable pressure, such as 80 PSI. Any pressure may be used herein. - In some instances, the
filter system 308 may comprise afirst filter 354, asecond filter 356, and athird filter 358. Thefirst filter 354 may be configured to receive water from theinlet 324 of thefilter system 308. Thefirst fitter 354 may filter the water and deliver a first filtered water to thesecond filter 356. Thesecond filter 356 may be configured to receive the first filtered water from thefirst filter 354. Thesecond filter 356 may bifurcate the first filtered water into a first portion and a second portion. Thesecond filter 356 may comprise a reverse osmosis filter to the like. The first portion of the first filtered water may be supplied to thefirst outlet 326 of thefilter system 308. In this manner, the first portion of the first filtered water may comprise the waste water that is delivered back to the first three-way valve 306 by way of thepipe 332. The second portion of the first filtered water may be supplied to thethird filter 358. Thethird filter 358 may be configured to receive the filtered water from thesecond filter 356, to further filter the water, and to deliver the filtered water to thesecond outlet 328 of thefilter system 308. In this manner, the second portion of the first filtered water, which is collectively filtered by thefirst filter 248, thesecond filter 250, and thethird filter 252, comprises the filtered water that is supplied the filteredwater tank 310 by way of thepipe 338. - In certain embodiment, the
first filter 354 may comprise a sediment filter, a carbon filter, a KDF filter, or a combination thereof. Thesecond filter 356 may comprise a reverse osmosis membrane. Thethird filter 358 may comprises a carbon filter, an ion exchange filter, a remineralization element, or a combination thereof. In other instances, thethird filter 358 may be omitted. In such instances, thesecond filter 356 may be configured to filter and deliver the second portion of the first filtered water to the filteredwater tank 310. In yet other instances, additional filters may be disposed downstream of thethird filter 358 before the filteredwater tank 310. Any number, type, and/or combination of filters may be used herein. - In certain embodiments, 100% of the water that enters the
first filter 354 may pass to thesecond filter 356. In other instances, less than 100% of the water that enters thesecond filter 356 passes to thethird filter 358. For example, about 1% to about 30% of the water that enters thesecond filter 356 may pass to thethird filter 358, with the remaining water constituting the waste water that is delivered back to the first three-way-valve 306 by way of thepipe 332. In yet another embodiment, 100% of the water that enters thethird filter 358 may pass to the filteredwater tank 310. Any percentage of water may enter thefirst filter 354, thesecond filter 356, or thethird filter 358. - In operation, water is supplied to the first three-way-
valve 306 from thewater source 302 via thepipe 322. Thepressure reducer 352 may provide the water to the first three-way-valve 306 at a suitable pressure. Thewater source 302 may continually feed the first three-way-valve 306 as needed. Waste water from thefilter system 308 may mix with water from thewater source 302 in the first three-way-valve 306. For example, as discussed above, thefilter system 308 may filter a portion of the water, which may be supplied to the filteredwater tank 310 to be dispensed by thefaucet 340. A small portion of the waste water from thefilter system 308 may be recycled back to the first three-way-valve 306 via thepipe 332 to be mixed with the source water and the cycle continued. The second three-way-valve 314 may divert a portion of the waste water from thefilter system 308 to thedrain 342 via thedrain pipe 344. - The
system 300 may include additional components and functionality. For example, thesystem 300 may include a UV treatment device, a heater, a chiller, and/or a carbonator. In addition, thesystem 300 may include devices capable of adding vitamins to the water and/or re-mineralizing the water. In certain embodiments, thesystem 300 may include a supply of electrical power, an electronic controller, and one or more sensors to monitor and control the dispensing of filtered water. - The water filtration systems in
FIG. 1-3 may significantly reduce operation cost and the environmental impact of wasted water as compared to conventional RO systems. For example, the systems described inFIGS. 1-3 provide under the sink RO systems that waste less water than conventional RO systems. In some instances, a conventional RO system may waste 70% to 90% of the water processed. The present systems, however, may substantially reduce waste water to about 10% to 30%. - Although specific embodiments of the disclosure have been described, numerous other modifications and alternative embodiments are within the scope of the disclosure. For example, any of the functionality described with respect to a particular device or component may be performed by another device or component. Further, while specific device characteristics have been described, embodiments of the disclosure may relate to numerous other device characteristics. Further, although embodiments have been described in language specific to structural features and/or methodological acts, it is to be understood that the disclosure is not necessarily limited to the specific features or acts described. Rather, the specific features and acts are disclosed as illustrative forms of implementing the embodiments. Conditional language, such as, among others, “can,” “could,” “might,” or “may,” unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments could include, while other embodiments may not include, certain features, elements, and/or steps. Thus, such conditional language is not generally intended to imply that features, elements, and/or steps are in any way required for one or more embodiments.
Claims (8)
1. A reverse osmosis water treatment system, comprising:
a source of water;
a first three-way valve comprising a first inlet, a second inlet, and an outlet, wherein the first inlet of the first three-way valve is in fluid communication with the source of water;
a filter system comprising an inlet, a first outlet, and a second outlet, wherein the inlet of the filtration system is in fluid communication with the outlet of the first three-way valve, wherein the first outlet of the filter system is in fluid communication with the second inlet of the first three-way valve, wherein the first outlet of the filter system supplies waste water from the filter system to the first three-way valve, and wherein the first three-way valve mixes water from the source of water and waste water from the filter system;
a filtered water tank comprising an inlet and an outlet, wherein the inlet of the filtered water tank is in fluid communication with the second outlet of the filter system, wherein the second outlet of the filter system supplies filtered water to the filtered water tank, wherein the outlet of the filtered water tank is in fluid communication with a faucet, and wherein the outlet of the filtered water tank supplies the filtered water to the faucet;
a pump disposed in fluid communication between the first three-way valve and the filter system; and
a second three-way valve disposed in fluid communication between the first three-way valve and the filter system and in fluid communication with a drain, wherein the second three-way valve diverts a first portion of water from the filter system to the first three-way valve, and wherein the second three-way valve diverts a second portion of water from the filter system to the drain.
2. The system of claim 1 , further comprising a pressure reducer disposed in fluid communication between the source of water and the first three-way valve.
3. The system of claim 1 , wherein the filter system further comprises:
a first filter and a second filter;
wherein the first filter is configured and disposed to receive water from the inlet of the filter system and to filter and deliver first filtered water to the second filter; and
wherein the second filter is configured and disposed to receive the first filtered water from the first filter, to deliver a first portion of the first filtered water to the first outlet of the filter system, the first portion of the first filtered water being the waste water that is delivered back to the first three-way valve, and to filter and deliver a second portion of the first filtered water, the second portion of the first filtered water being the filtered water.
4. The system of claim 3 , wherein the filter system further comprises a third filter, wherein the third filter is configured and disposed to receive the filtered water from the second filter and to further filter and deliver the filtered water to the second outlet of the filter system.
5. The system of claim 4 , wherein:
the first filter comprises a sediment filter, a carbon filter, a KDF filter, or a combination thereof;
the second filter comprises a reverse osmosis membrane; and
the third filter comprises a carbon filter, an ion exchange filter, a remineralization element, or a combination thereof.
6. The system of claim 4 , wherein:
100% of the water that enters the first filter passes to the second filter;
less than 100% of the water that enters the second filter passes to the third filter; and
100% of the water that enters the third filter passes to the filtered water tank.
7. The system of claim 1 , wherein:
about 75% of the waste water from the filter system is supplied to the first three-way valve by way of the second three-way valve as the first portion of the water from the filter system; and
about 25% of the water from the filter system is diverted by way of the second three-way valve as the second portion of water from the filter system to the drain.
8. A reverse osmosis water treatment system, comprising:
a source of water;
a first three-way valve comprising a first inlet, a second inlet, and an outlet, wherein the first inlet of the first three-way valve is in fluid communication with the source of water;
a filter system comprising an inlet, a first outlet, and a second outlet, wherein the inlet of the filtration system is in fluid communication with the outlet of the first three-way valve, wherein the first outlet of the filter system is in fluid communication with the second inlet of the first three-way valve, wherein the first outlet of the filter system supplies waste water from the filter system to the first three-way valve, and wherein the first three-way valve mixes water from the source of water and waste water from the filter system;
a pump disposed in fluid communication between the first three-way valve and the filter system; and
a second three-way valve disposed in fluid communication between the first three-way valve and the filter system and in fluid communication with a drain, wherein the second three-way valve diverts a first portion of water from the filter system to the first three-way valve, and wherein the second three-way valve diverts a second portion of water from the filter system to the drain.
Priority Applications (1)
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US15/207,055 US20170028351A1 (en) | 2015-07-27 | 2016-07-11 | Systems and methods for water filtration |
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US14/809,526 US9422173B1 (en) | 2015-07-27 | 2015-07-27 | Systems and methods for water filtration |
US15/207,055 US20170028351A1 (en) | 2015-07-27 | 2016-07-11 | Systems and methods for water filtration |
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US14/809,526 Division US9422173B1 (en) | 2015-07-27 | 2015-07-27 | Systems and methods for water filtration |
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US15/207,044 Abandoned US20170028350A1 (en) | 2015-07-27 | 2016-07-11 | Systems and methods for water filtration |
US15/239,023 Active 2036-07-12 US10279315B2 (en) | 2015-07-27 | 2016-08-17 | Systems and methods for water filtration |
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JP (1) | JP2018523565A (en) |
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CN (1) | CN107709248A (en) |
CA (1) | CA2992302A1 (en) |
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Also Published As
Publication number | Publication date |
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KR20180026541A (en) | 2018-03-12 |
CA2992302A1 (en) | 2017-02-02 |
MX2018000489A (en) | 2018-04-30 |
JP2018523565A (en) | 2018-08-23 |
US20170029293A1 (en) | 2017-02-02 |
US20170028350A1 (en) | 2017-02-02 |
EP3328797A4 (en) | 2019-04-17 |
WO2017019229A1 (en) | 2017-02-02 |
EP3328797A1 (en) | 2018-06-06 |
US10279315B2 (en) | 2019-05-07 |
CN107709248A (en) | 2018-02-16 |
US9422173B1 (en) | 2016-08-23 |
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