GB2200902A - Treatment of potable water - Google Patents
Treatment of potable water Download PDFInfo
- Publication number
- GB2200902A GB2200902A GB08722897A GB8722897A GB2200902A GB 2200902 A GB2200902 A GB 2200902A GB 08722897 A GB08722897 A GB 08722897A GB 8722897 A GB8722897 A GB 8722897A GB 2200902 A GB2200902 A GB 2200902A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- filter
- sterilising agent
- container
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000003651 drinking water Substances 0.000 title description 3
- 235000012206 bottled water Nutrition 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 230000001954 sterilising effect Effects 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims description 12
- 239000000460 chlorine Substances 0.000 claims description 10
- 229910052801 chlorine Inorganic materials 0.000 claims description 10
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000012286 potassium permanganate Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000004040 coloring Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 5
- 238000012505 colouration Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/143—Filter condition indicators
-
- 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
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F2201/006—Cartridges
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
- C02F2209/445—Filter life
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/18—Removal of treatment agents after treatment
- C02F2303/185—The treatment agent being halogen or a halogenated compound
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Water is treated with a sterilising agent and a colouring agent and then passed through a filter (26) which removes, among other matter, both of these agents from the water. Any coloration in the filtered water is an indication that the filter is beginning to fail and requires replacement. <IMAGE>
Description
TREATMENT OF POTABLE WATER
This invention relates to treatment of water to ensure potability.
Chlorine is the most widely used agent for destroying harmful micro-organisms in drinking water. The general public can buy agents for dissolving in suspect water and some of these are compounds which produce chlorine when dissolved in water. It is desirable to remove the agent, or at least a substantial part of it, once the micro-organisms have been destroyed, because most agents, including chlorine, are poisons when taken in substantial ' quantities. This is achieved by filtration using a carbon filter.
The filters have to be replaced at intervals and it is difficult to determine when a filter is no longer performing effectively. The failure of a filter is usually noticed by the taste of chlorine in the filtered water.
The present invention provides a method, apparatus and a treatment pack for treating water to ensure potability which overcomes this problem.
In accordance with this invention, there is provided a method of treating water to ensure potability, comprising dissolving a sterilising agent in the water and filtering the water to remove the sterilising agent, wherein a colour indicator is dissolved in the water prior to filtration and is filtered out of the water in the filtration step.
The colouration in the water, therefore, produced by the indicator, will be removed by the filtration step providing an indication that the filter is operating effectively. Conversely, if the filtered water has some colouration, this is an indication that the filter is no longer operating effectively and requires replacement.
The indicator must itself be harmless in small quantities and potassium permanganate is the preferred indicator This compound provides a high colouration for a small amount of the compound and an indication of failure of the filter is provided at an early stage. In addition, potassium permanganate in itself has a sterilising function.
It is preferred that the sterilising agent is chlorine or a compound which releases chlorine when dissolved in water.
The inventon may reside in a treatment pack for use in treating water to ensure potability, the pack comprising a sterilising agent for dissolving in the water, a colour indicator for dissolving in the water and a filter for filtering out the sterilising agent and the colour indicator.
The invention may reside in a treatment pack for use in treating water to ensure potability, comprising a chlorine solution or a compound which produces chlorine when dissolved in the water, potassium permanganate and a carbon filter for filtering chlorine and potassium permanganate from the water.
The invention additionally resides in apparatus for use in treatment of water to ensure potability, comprising first container for receiving the water, a sterilising agent for dissolving in the water in the first container, a colour indicator for dissolving in the water in the first container, a second container, a perforate filter support associated with the second container, and a filter for use with the filter support for filtering out the sterilising agent and the colour indicator when the water is poured from the first container through the filter into the second container.
Reference is now made to the accompanying drawing, wherein:
Figure 1 shows an apparatus according to the invention for treating water with a bottle for receiving the treated water; and
Figure 2 shows thes same apparatus together with a beaker for receiving the treated water.
Referring to Figure 1, the bottle 11 shown defines a collecting container having a neck 12 defining a mouth 13.
A filter chamber 15 is provided having an open upper end 16. The opposite, lower end has a central outlet aperture 17 in an end wall 18.
The filter chamber is carried by a mounting device 20 having a dish portion 21 receiving said end wall 18 and having an aperture 22 aligned with the aperture 17 in the end wall. A plurality of elongate fingers 25 surround the apertures and project to the opposite side of the device rom the filter chamber. These fingers 25 engage in the neck 12 of the bottle 11 to ' located the mounting device so that the filter chamber is supported on the bottle.
The filter chamber contains a filter comprising carbon granules 26 located between porous supports 27, 28, e.g. of synthetic sponge. The filter is protected by a perforated disc 29 laid on top of the filter in the chamber 15.
In use, water having dissolved therein the sterilising agent and the indicator is poured into the open end 16 of the filter chamber and collects (30) on top of the perforated disc. The water seeps through the filter and is collected in the bottle 11. In passing through the filter, both the sterilising agent and the indicator are removed from the water.
The treated water may, alternatively, be collected in a beaker 10 (Figure 2). The mounting device 20 has a peripheral flange 23 with a downturned lip 24. The flange may seat on the rim of the beaker with the lip engaged around the rim to locate the filter chamber 15 on the beaker.
Claims (10)
1. A method of treating water to ensure potabnlity, comprising dissolving a sterilising agent in the water and filtering the water to remove the sterilising agent, wherein a colour indicator is dissolved in the water prior to filtration and is filtered out of the water in the filtration step.
2. A method according to Claim 1, wherein the sterilising agent is also the colour indicator.
3. A method according to Claim 2, including an additional sterilising agent.
4. A method according to Claim 2 or 3, wherein the colour indicator is potassium permanganate.
5. A method according to Claim 4 as appendant to Claim 3, wherein the additional sterilising agent contains or releases chlorine.
6. A method according to any preceding claim wherein the filter comprises a carbon filter.
7. A treatment pack for use in treating water to ensure potability, the pack comprising a sterilising agent for dissolving in the water, a colour indicator for dissolving in the water, and a filter for filtering out both the sterilising agent and the colour indicator.
8. A treatment pack according to Claim 7 wherein the sterilising and/or the colour indicator are as claimed in any one of method Claims 2 to 5.
9. A treatment pack according to Claim 7 or 8, wherein the filter comprises a carbon filter.
10. Apparatus for use in the treatment of water to ensure potability, comprising a treatment pack according to Claim 7, 8 or 9, together with a first container for the water to be treated and a second container having a perforate filter support for supporting the filter, so that water may be poured from the first container into the second container through the filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08722897A GB2200902A (en) | 1986-10-01 | 1987-09-30 | Treatment of potable water |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB868623526A GB8623526D0 (en) | 1986-10-01 | 1986-10-01 | Treatment of potable water |
| GB08722897A GB2200902A (en) | 1986-10-01 | 1987-09-30 | Treatment of potable water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8722897D0 GB8722897D0 (en) | 1987-11-04 |
| GB2200902A true GB2200902A (en) | 1988-08-17 |
Family
ID=26291353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08722897A Withdrawn GB2200902A (en) | 1986-10-01 | 1987-09-30 | Treatment of potable water |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2200902A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0376126A2 (en) * | 1988-12-30 | 1990-07-04 | Purotech Ltd. | Improvements in water purification systems |
| FR2692881A1 (en) * | 1992-06-24 | 1993-12-31 | Splenodex Labo Rech Therapeut | Powder for decontaminating water - comprising first disinfectant powder contg. potassium permanganate, slaked lime and calcium carbonate, and second flocculant powder contg. sodium sulphite, sodium carbonate and calcium carbonate |
| WO1996018580A1 (en) * | 1994-12-15 | 1996-06-20 | Kimberly-Clark Worldwide, Inc. | Process and article for disinfecting water |
| WO1998025682A1 (en) * | 1996-12-11 | 1998-06-18 | Kimberly-Clark Worldwide, Inc. | Indicator means for liquid purification filter |
| US9511315B2 (en) | 2012-12-04 | 2016-12-06 | Whirlpool Corporation | Water pitcher with filter |
| US9539526B2 (en) | 2012-12-04 | 2017-01-10 | Whirlpool Corporation | Filter assembly and systems/methods of dispensing from and storing the filter assembly |
| USD805342S1 (en) | 2016-03-31 | 2017-12-19 | Whirlpool Corporation | Water filtration pitcher |
-
1987
- 1987-09-30 GB GB08722897A patent/GB2200902A/en not_active Withdrawn
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0376126A2 (en) * | 1988-12-30 | 1990-07-04 | Purotech Ltd. | Improvements in water purification systems |
| EP0376126A3 (en) * | 1988-12-30 | 1991-01-30 | Purotech Ltd. | Improvements in water purification systems |
| FR2692881A1 (en) * | 1992-06-24 | 1993-12-31 | Splenodex Labo Rech Therapeut | Powder for decontaminating water - comprising first disinfectant powder contg. potassium permanganate, slaked lime and calcium carbonate, and second flocculant powder contg. sodium sulphite, sodium carbonate and calcium carbonate |
| EP1013612A2 (en) * | 1994-12-15 | 2000-06-28 | Kimberly-Clark Worldwide, Inc. | Process and article for disinfecting water |
| AU692345B2 (en) * | 1994-12-15 | 1998-06-04 | Kimberly-Clark Worldwide, Inc. | Process and article for disinfecting water |
| WO1996018580A1 (en) * | 1994-12-15 | 1996-06-20 | Kimberly-Clark Worldwide, Inc. | Process and article for disinfecting water |
| EP1013612A3 (en) * | 1994-12-15 | 2000-07-12 | Kimberly-Clark Worldwide, Inc. | Process and article for disinfecting water |
| WO1998025682A1 (en) * | 1996-12-11 | 1998-06-18 | Kimberly-Clark Worldwide, Inc. | Indicator means for liquid purification filter |
| US9511315B2 (en) | 2012-12-04 | 2016-12-06 | Whirlpool Corporation | Water pitcher with filter |
| US9539526B2 (en) | 2012-12-04 | 2017-01-10 | Whirlpool Corporation | Filter assembly and systems/methods of dispensing from and storing the filter assembly |
| US9550138B2 (en) | 2012-12-04 | 2017-01-24 | Whirlpool Corporation | Gravity fluid/water filter system |
| US9731234B2 (en) | 2012-12-04 | 2017-08-15 | Whirlpool Corporation | Liquid pitcher including divided fluid filter for inlet and outlet filtering |
| USD805342S1 (en) | 2016-03-31 | 2017-12-19 | Whirlpool Corporation | Water filtration pitcher |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8722897D0 (en) | 1987-11-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5505120A (en) | Water filter | |
| EP0056054B1 (en) | Water purification system | |
| CA1337709C (en) | Portable water-purifying devices | |
| EP1060130B1 (en) | An improved filter cartridge, particularly for jug water purifiers | |
| US5110482A (en) | Water repurification method of city water and its equipment | |
| US4505823A (en) | Filtering device for treating contaminated aqueous solutions | |
| GB2200902A (en) | Treatment of potable water | |
| KR20130027790A (en) | Apparatus for refining waste cooking oil | |
| CA1271017A (en) | Instrument sterilization container | |
| EP0334527A3 (en) | Slime control for primary filtration systems | |
| JPS61263691A (en) | Water treating apparatus | |
| JPS62227489A (en) | Water treatment appliance | |
| JPH0751236B2 (en) | How to purify drinking water | |
| JP3049086U (en) | Water purification equipment | |
| JPH08243387A (en) | Free chlorine removing member and utilization thereof | |
| JPS6314676B2 (en) | ||
| JP3057796U (en) | Simple water purifier | |
| KR200237607Y1 (en) | An ozone vessel and water treatment apparatus | |
| JPH06296962A (en) | Purified water treating device | |
| JPH03143592A (en) | Water feed device for drinking water | |
| JPH02160009A (en) | Method and device for separating by filtration | |
| JPH0628237Y2 (en) | Water supply system for drinking water | |
| JP3008119U (en) | Water purification equipment | |
| JPH03123688A (en) | Bag for purifying drinking water | |
| JPS61111188A (en) | Water purifier for tap |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |