WO2001074717A2 - Water processing unit - Google Patents
Water processing unit Download PDFInfo
- Publication number
- WO2001074717A2 WO2001074717A2 PCT/GB2001/001465 GB0101465W WO0174717A2 WO 2001074717 A2 WO2001074717 A2 WO 2001074717A2 GB 0101465 W GB0101465 W GB 0101465W WO 0174717 A2 WO0174717 A2 WO 0174717A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- processing unit
- filter
- outlet
- inlet
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
- E03B1/041—Greywater supply systems
- E03B1/042—Details thereof, e.g. valves or pumps
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/4606—Treatment of water, waste water, or sewage by electrochemical methods for producing oligodynamic substances to disinfect the water
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
- C02F1/505—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/002—Grey water, e.g. from clothes washers, showers or dishwashers
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
- E03B1/041—Greywater supply systems
- E03B2001/047—Greywater supply systems using rainwater
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/152—Water filtration
Definitions
- the invention relates to a water processing unit, particularly, though not exclusively to a water processing unit for processing recovered rainwater.
- a variety of systems for recovering and purifying rainwater to produce potable water are known in the prior art though those generally available on the market only provide non-potable water.
- the systems generally have a system of physical filtration, such as sand, to remove particulate matter and a system of disinfection, for example chemical treatment, to kill bacteria.
- a system of physical filtration such as sand
- a system of disinfection for example chemical treatment
- One known system described in UK Patent Application number 2,038,307A, includes a first filter to remove particles from the water, possibly a carbon filter to improve the appearance of the water and a purification filter using chemical or UV treatment to disinfect the water and make it suitable for drinking.
- the systems generally have a restricted flow rate depending on the slowest flow rate of the filters in the system.
- Known systems are complicated to set up and use and once in situ cannot easily be moved to another site.
- a further problem with known systems is that the filtration of particles from the water is often carried out using fibre or mesh filters. These tend to clog up very quickly and have to be replaced often, which is inconvenient and costly.
- An object of the invention is to provide a compact, cheap and effective water processing unit.
- the invention provides a water processing unit comprising: a water inlet, for inputting water to the water processing unit; at least one primary filter having an inlet connected to the water inlet and at least two outlets; at least two secondary filters in parallel, each having an inlet connected to one of the primary filter outlets and an outlet; a disinfection unit having an inlet connected to the outlets of the at least two secondary filters and an outlet; and a potable water outlet connected to the disinfection unit outlet.
- the primary filter comprises a further outlet for enabling water that has been partially filtered but not disinfected to be extracted for use in flushing toilets and other applications in which it is not necessary to have the water disinfected.
- the primary filter removes particulate matter from the water.
- the primary filter comprises a series of coils through which the water flows, with no particles larger than the gaps between the coils being able to pass through.
- the filter is of the type referred to as a zero gravity filter.
- the water processing unit further comprises a backwashing mechamsm to flush water back through the filter to clean it periodically.
- the unit comprises a further outlet for the backwash water.
- the backwashing mechanism may be activated automatically at set time intervals or when set amounts of water have flowed through the unit.
- the primary filter is automatically backwashed on activation of a pressure switch when the filter requires cleaning.
- the backwashing mechanism can be activated by an operator.
- the primary filter filters to at least 50 ⁇ m.
- water exiting the primary filter has been filtered to between lO ⁇ m and 25 ⁇ m. If the filtration rating of the primary filter is greater than about
- the operation of the secondary filters may be affected. However, if the filtration rating of the primary filter is less than about lO ⁇ m the flow through rate of the water will be too slow for practical use.
- the filtered water from the primary filter is separated into at least two parallel channels that flow to the secondary filters.
- the parallel arrangement of the secondary filters enables the flow through of the processing unit to be increased without reducing the effectiveness of the filters.
- the secondary filters are carbon filters to remove colours, odours and organic matter from the water.
- the filters comprise granulated carbon.
- the filters comprise cellulose activated carbon.
- the carbon comprises granulated carbon which itself has a filtration rating of the order of lO ⁇ m.
- the carbon filters are replaceable. In a household rainwater processing unit, it has been found that the carbon filters will need to be replaced once or twice a year but this depends on the quantity and the input quality of the water being processed.
- the secondary filters advantageously may comprise coil (zero gravity) filters.
- the primary filter may advantageously comprise a filter that filters to 50 ⁇ m, for example, and the secondary filters may advantageously comprise filters that filter to 25 ⁇ m, for example.
- the water exiting from the parallel secondary filters is then fed into the disinfection unit.
- the disinfection unit comprises an ionisation purifier.
- the water is treated electrically to destroy bacteria.
- the unit comprises a silver particulate ionisation purifier.
- silver and copper ions are used, which has the further advantage that a residue is left in the water that continues to provide a disinfection effect after the water has left the processing unit. It is important that the flow-through is regulated to ensure that the correct amount of ions enters the water.
- Advantageously flow-control valves are provided to regulate the flow-through of water through the disinfection unit.
- Ionisation purifiers are "environmentally friendly" compared with other types of disinfection units as no chemicals have to be added. Additionally such units can be made particularly compact.
- the disinfection unit is replaceable.
- disinfection unit such as ultraviolet, ozone or chemicals such as chlorine.
- UV, ozone or chemicals such as chlorine.
- These units generally have disadvantages in size, complexity, operation, or in the chemicals that are required.
- These types of unit also have high maintenance requirements, with the associated high costs of carrying out such maintenance.
- the water processing unit of the invention comprises: a water inlet, for inputting water to the water processing unit; at least one primary filter comprising a zero gravity filter and having an inlet connected to the water inlet and at least two outlets; at least two secondary filters comprising carbon filters and being arranged in parallel, each having an inlet connected to one of the primary filter outlets and an outlet; a disinfection unit comprising an ionisation purifier and having an inlet connected to the outlets of the at least two secondary filters and an outlet; and a potable water outlet connected to the disinfection unit outlet.
- the water processing unit of the invention comprises: a water inlet, for inputting water to the water processing unit; at least one primary filter comprising a zero gravity filter having a first filtration rating to filter out particles of greater than a first selected size and having an inlet connected to the water inlet and at least two outlets; at least two secondary filters comprising zero gravity filters having a second filtration rating to filter out particles of greater than a second selected size, the second selected size being smaller than the first selected size, and being arranged in parallel, each having an inlet connected to one of the primary filter outlets and an outlet; a disinfection unit comprising an ionisation purifier and having an inlet connected to the outlets of the at least two secondary filters and an outlet; and a potable water outlet connected to the disinfection unit outlet.
- the water processing unit further comprises an enclosed housing, with the primary filter, the secondary filters and the disinfection unit being contained within the housing and the housing having a water inlet and at least one water outlet.
- the housing comprises a lid.
- the lid is arranged to connect the water inlet to the primary filter, the primary filter to the secondary filters, the secondary filters to the disinfection unit and the disinfection unit to the water outlet.
- the lid comprises channel means to transfer water between the elements.
- the water inlet to the housing feeds water into the primary filter at the top of the filter such that water flows down the outside of the filter and then up through the middle of the filter.
- the water inlet feeds the water into the primary filter at an angle to enable a more efficient filtration rate to be achieved for the filter.
- the outlet of water from the unit depends on the requirements for the use of the water. If the water is only required for flushing toilets or washing clothes, for example, the water does not need to be fully treated and the water can be drawn out of the unit from an outlet directly from the primary filter. This enables a much higher flow through of water to be achieved than is possible if all the water has to pass through the whole unit, whatever the final use. Water that is required for drinking, for example, is processed through the whole unit and is drawn out of the unit from the outlet from the disinfection unit.
- a particular advantage of the water processing unit of the invention is that it provides filtration and disinfection within one purposely-designed unit.
- the unit is capable of processing small flows of water (for example, about up to 20 litres/minute) to potable water quality. Previous systems provide much larger flows and are better suited to municipal or commercial treatment works, as opposed to private water supplies like those for which it is principally intended will be supplied by the unit of the invention.
- water processing units of the invention can be placed in parallel to each other to increase flow. This has the further advantage that flow does not need to be disrupted whilst one unit is being maintained.
- the water processing unit of the invention integrates a number of pods within one unit and is compact and small (for example it can be approximately 300mm x 300mm x 300mm) in comparison to prior art water processing units.
- the invention provides a single unit housing all the components for filtration.
- the unit of the invention has been designed to operate with low running costs, requiring only occasional replacement of the activated carbon filters, normally about twice per year.
- Other filters used with the unit are stainless steel filters, which can be automatically backwashed.
- prior art systems use replaceable or throw-away disposable filters, which are increasingly considered to be environmentally unfriendly and in addition, increase operational and running costs.
- Chlorine is chemical disinfection that is difficult to control and requires expensive dosing equipment
- ozone is difficult to control and unstable, both being more suited to municipal treatment works.
- UN treatment although it can be suited to small units, is not effective at destroying both bacteria and viruses and is only effective at destroying bacteria if one can be sure that no particles are shielding bacteria and that there is no slime build up on the UN tube; additionally UV tubes require costly maintenance and degrade in quality (kill rate) over time.
- the preferred embodiments of the unit of the invention utilise ionisation disinfection which, as well as suiting the compact unit, is simple to control, effective at destroying both bacteria and viruses and has simple and low cost maintenance.
- ionisation is preferred to chemical treatment, which is not considered to be environmentally friendly.
- the invention also provides a water reclamation and processing system in which water is collected from, for example the roof of a structure, such as a building, stored in a tank, processed through a water processing unit and supplied to outlets as a potable water supply and a non-potable water supply.
- a water reclamation and processing system in accordance with the invention comprises: water collection means; a storage tank; a pump; a pump inlet filter; a water processing unit comprising a water inlet, for inputting water to the water processing unit, at least one primary filter having an inlet connected to the water inlet and at least two outlets, at least two secondary filters in parallel, each having an inlet connected to one of the primary filter outlets and an outlet, a disinfection unit having an inlet connected to the outlets of the at least two secondary filters and an outlet, and a potable water outlet connected to the disinfection unit outlet; and at least one water outlet.
- rainwater is collected from the roof of a structure and is fed through a pre-tahk filter, to remove any debris, into the storage tank.
- the water is fed in through an inlet calmer so as not to disturb any sediment in the water tank.
- the water is pumped out of the storage tank when it is required through a pump inlet filter.
- the pump inlet filter comprises a suction filter on the pump inlet.
- this comprises a floating filter which floats near the surface of the water. The use of a floating filter limits disturbance of the natural biofilm layer that forms at the bottom of the tank and which acts to naturally reduce bacteria and cloudiness in the water.
- sensors are provided to indicate how much water is held in the tank and advantageously the supply automatically switches to a mains water supply if there is insufficient water in the tank.
- the system operates on demand, for example when a tap is turned on.
- the pump is switched on on demand and, advantageously the system further comprises a pressure vessel to ensure that water is under pressure in the system to enable an instant supply of water to be provided.
- FIG. 1 shows a schematic plan view of a water processing unit according to a first aspect of the invention
- FIG. 2 shows a schematic side view of the water processing unit shown in Figure 1;
- Figure 3 shows a plan view of a water processing unit and housing according to the invention
- Figure 4 shows a cross sectional view from the top of a lid of a housing according to Figure 3;
- Figure 5 shows a schematic view of a water reclamation and processing system according to a second aspect of the invention.
- a water processing unit 1 comprises a housing 2 enclosing a primary filter 3, a pair of secondary filters 4a,b and a disinfection unit 5.
- Reclaimed water such as rainwater or stream water
- the primary filter 3 comprises a zero gravity filter having a series of coils 7 through which the input water flows.
- the water exits the primary filter 3 at outlet 8 and passes through channels 9a,b to the secondary filters 4a,b.
- a non-drinking water outlet 10 is provided from the primary filter 3 for water for uses such as toilet flushing.
- the water flow from the primary filter outlet 8 is split substantially equally between the two channels 9a,b and flows to inlets lla,b to the secondary filters 4a,b.
- the secondary filters 4a,b contain granulated carbon 12 and are arranged in parallel. For optimum operation of the processing unit 1, the water flow passes through both secondary filters 4a,b but in certain circumstances it may be desirable to shut off or remove one of the secondary filters and in this case the water will be directed to flow through only the other filter.
- the water flows out of the secondary filters 4a,b via outlets 13a,b, through channels 14a,b and into the disinfection unit 5 through inlet 15.
- the disinfection unit 5 comprises an ionisation purifier having a source of silver and copper ions 16.
- An electricity supply 17, for example a mains electricity supply, provides power to the disinfection unit 5.
- the purified and disinfected water is then extracted from the system via an outlet 18 to be provided to a tap 37 for use as drinking water or as required.
- the unit 1 also includes a backwash outlet 19 for water used for backwashing filter 3 to be outlet from the unit.
- FIG 3 shows the unit 1 in the housing 2 and Figure 4 shows a cross- sectional view of a lid 100 of the housing 2, as arranged for operation.
- the lid 100 is fitted to the top of the housing 2.
- Water is fed into the housing 2 through the inlet 6 and to the primary filter 3.
- the water flows down the coils 7 in the filter 3 and up through the centre 101. It then flows through channels 9a,9b in the lid 100 and into the secondary filters 4a,4b at their respective bases 102a, 102b.
- the water flows up through the carbon 12 secondary filters 4a,4a and out of the respective tops 103a, 103b and via a channel 14a, 14b, 104 in the lid 100 to the disinfection unit 5.
- the filtered and disinfected water may then flow out of the system from outlet 18.
- the non-drinking water outlet 10 from the primary filter 3 allows water which has only had a basic filtering carried out on it to be used for washing and so on.
- This outlet 10 also provides an outlet for backwashing water which is fed via inlet 105 through the primary filter 3 when cleaning is required.
- a water reclamation and processing system comprises primarily a water storage tank 20 and a water processing unit 1 , as described with reference to Figures 1 to 4.
- Rainwater falling on the roof 21 of a structure 22 runs into gutters 23 and is fed via downpipes 24 through a pre-tank filter 25, to remove debris, to the storage tank 20.
- the water enters the storage tank 20 through an inlet diffuser or calmer 26 so as not to disturb any sediment at the base of the tank 20.
- Sensors 27 in the tank 20 provide an indication of the amount of water in the tank and information relating to this amount is fed to a control unit 28 associated with the processing unit 1. If there is insufficient water in the tank 20, the system is automatically switched to a standard mains supply 29, which provides a backup in the event that there is insufficient rainfall to supply the needs of the household.
- a pump 30 pumps water from the tank 20 to the processing unit 1 for purification.
- the pump 30 has an inlet 31 with a suction filter 32 to prevent debris being drawn into the pump 30.
- a float 33 keeps the inlet 31 near the surface of the water so that the action of pumping water out of the tank 20 does not disturb the natural biofilm that forms at the base 34 of the tank 20. This biofilm naturally reduces bacterial and cloudiness in the water and thus it is advantageous to retain it in the tank 20.
- a tank overflow 35 allows water to run off through a back pressure flap 36 if the tank 20 gets too full.
- the back pressure flap 36 ensures that water cannot flow back into the tank 20 via the overflow outlet 35.
- a pressure vessel 39 ensures that water under pressure is already in the system to ensure an instant supply to the tap or other outlet and the pump 30 pumps water from the tank 20 to the processing unit 1 , as described with respect to Figures 1 to 4.
- Water to toilets, washing machine or other appliances or outside taps 38a,38b,38c,38d comes from outlet 10 of the unit 1 and potable water to the interior taps 37a,37b comes from the outlet 18 of the unit l.
- Any overflow from the filters in the unit 1 or the pre-tank filter 25 can flow out through an outlet 40.
- Back pressure flap 41 ensures that the overflow water cannot flow back into the system.
- the water processing unit according to the invention has many advantages.
- the combination of the elements of the unit combined with their arrangement in the unit provide an effective water processing unit that can be supplied as a single unit and which is compact, convenient and relatively cheap.
- the user does not have to join the separate elements together but is provided with an effective and easy-to-use unit that allows the user various different options depending on their requirements.
- the arrangement of the unit with a primary filter feeding to two secondary filters in parallel enables a higher flow through rate to be obtained than in prior art water processing systems.
- the water processing unit and reclamation and processing system of the invention can be used to process any source of relatively clean water such as rainwater, stream water and some household water.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001246682A AU2001246682A1 (en) | 2000-04-04 | 2001-04-04 | Water processing unit |
EP01919621A EP1296895A2 (en) | 2000-04-04 | 2001-04-04 | Water processing unit |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0008083.8 | 2000-04-04 | ||
GB0008083A GB0008083D0 (en) | 2000-04-04 | 2000-04-04 | Water processing unit |
GB0008577.9 | 2000-04-08 | ||
GB0008577A GB0008577D0 (en) | 2000-04-08 | 2000-04-08 | Water processing unit |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001074717A2 true WO2001074717A2 (en) | 2001-10-11 |
WO2001074717A3 WO2001074717A3 (en) | 2002-03-21 |
Family
ID=26244021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2001/001465 WO2001074717A2 (en) | 2000-04-04 | 2001-04-04 | Water processing unit |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1296895A2 (en) |
AU (1) | AU2001246682A1 (en) |
WO (1) | WO2001074717A2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002042217A1 (en) * | 2000-11-22 | 2002-05-30 | Polar Light Limited | Filter assembly for a household water purifier |
WO2005102941A1 (en) * | 2004-04-23 | 2005-11-03 | Aquaplus Technologies Pty, Ltd. | Water purification apparatus and method of using the same |
CN103991993A (en) * | 2014-04-30 | 2014-08-20 | 重庆优楷科技有限公司 | Purifying cycling reusing system for electromachining sewage |
CN104445754A (en) * | 2013-09-18 | 2015-03-25 | 福建金源泉科技发展有限公司 | Intelligent table surface water purifier and preparation method of filtration core of intelligent table surface water purifier |
CN114570103A (en) * | 2022-03-16 | 2022-06-03 | 中国水利水电科学研究院 | Industrial water saving system capable of being incorporated into social water circulation system |
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US10640403B2 (en) | 2013-08-15 | 2020-05-05 | Applied Silver, Inc. | Antimicrobial batch dilution system |
US11618696B2 (en) | 2013-08-15 | 2023-04-04 | Applied Silver, Inc. | Antimicrobial batch dilution system |
US10000881B2 (en) | 2013-12-06 | 2018-06-19 | Applied Silver, Inc. | Method for antimicrobial fabric application |
US20170050870A1 (en) | 2015-08-21 | 2017-02-23 | Applied Silver, Inc. | Systems And Processes For Treating Textiles With An Antimicrobial Agent |
US10760207B2 (en) | 2017-03-01 | 2020-09-01 | Applied Silver, Inc. | Systems and processes for treating textiles with an antimicrobial agent |
Citations (8)
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---|---|---|---|---|
DE2555178A1 (en) * | 1975-12-08 | 1977-06-16 | Viktor Dulger | Domestic drinking water treatment - in tubular containers of various sizes in series for physical and chemical processing |
DE9004397U1 (en) * | 1990-04-18 | 1990-06-21 | Schmidt, Carsten, 2101 Harmstorf, De | |
WO1996020139A1 (en) * | 1994-12-28 | 1996-07-04 | Roman Andreevich Penzin | Drinking water purification and conditioning system and a filter charge for purifying drinking water |
US5891333A (en) * | 1996-09-24 | 1999-04-06 | Ferguson; George E. | Modular multi-stage water filter apparatus |
WO1999028241A1 (en) * | 1997-12-04 | 1999-06-10 | Cliff Perry | Water decontaminating system and method |
US5972216A (en) * | 1997-10-24 | 1999-10-26 | Terra Group, Inc. | Portable multi-functional modular water filtration unit |
WO2000000434A1 (en) * | 1998-06-26 | 2000-01-06 | Mimi Georgieva Koleva | Method and apparatus for purification and disinfection of liquids |
EP1061048A1 (en) * | 1999-04-15 | 2000-12-20 | Frans Vergouwen | Potable and carbonated water dispenser with water treatment units |
-
2001
- 2001-04-04 AU AU2001246682A patent/AU2001246682A1/en not_active Abandoned
- 2001-04-04 EP EP01919621A patent/EP1296895A2/en not_active Withdrawn
- 2001-04-04 WO PCT/GB2001/001465 patent/WO2001074717A2/en not_active Application Discontinuation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2555178A1 (en) * | 1975-12-08 | 1977-06-16 | Viktor Dulger | Domestic drinking water treatment - in tubular containers of various sizes in series for physical and chemical processing |
DE9004397U1 (en) * | 1990-04-18 | 1990-06-21 | Schmidt, Carsten, 2101 Harmstorf, De | |
WO1996020139A1 (en) * | 1994-12-28 | 1996-07-04 | Roman Andreevich Penzin | Drinking water purification and conditioning system and a filter charge for purifying drinking water |
US5891333A (en) * | 1996-09-24 | 1999-04-06 | Ferguson; George E. | Modular multi-stage water filter apparatus |
US5972216A (en) * | 1997-10-24 | 1999-10-26 | Terra Group, Inc. | Portable multi-functional modular water filtration unit |
WO1999028241A1 (en) * | 1997-12-04 | 1999-06-10 | Cliff Perry | Water decontaminating system and method |
WO2000000434A1 (en) * | 1998-06-26 | 2000-01-06 | Mimi Georgieva Koleva | Method and apparatus for purification and disinfection of liquids |
EP1061048A1 (en) * | 1999-04-15 | 2000-12-20 | Frans Vergouwen | Potable and carbonated water dispenser with water treatment units |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002042217A1 (en) * | 2000-11-22 | 2002-05-30 | Polar Light Limited | Filter assembly for a household water purifier |
WO2005102941A1 (en) * | 2004-04-23 | 2005-11-03 | Aquaplus Technologies Pty, Ltd. | Water purification apparatus and method of using the same |
CN104445754A (en) * | 2013-09-18 | 2015-03-25 | 福建金源泉科技发展有限公司 | Intelligent table surface water purifier and preparation method of filtration core of intelligent table surface water purifier |
CN104445754B (en) * | 2013-09-18 | 2016-03-02 | 福建金源泉科技发展有限公司 | The preparation method of intelligence table top water purifier and filter core thereof |
CN103991993A (en) * | 2014-04-30 | 2014-08-20 | 重庆优楷科技有限公司 | Purifying cycling reusing system for electromachining sewage |
CN114570103A (en) * | 2022-03-16 | 2022-06-03 | 中国水利水电科学研究院 | Industrial water saving system capable of being incorporated into social water circulation system |
Also Published As
Publication number | Publication date |
---|---|
EP1296895A2 (en) | 2003-04-02 |
AU2001246682A1 (en) | 2001-10-15 |
WO2001074717A3 (en) | 2002-03-21 |
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