WO2012120391A1 - Purificateur d'eau et procédé de détermination des performances d'un système de purification d'eau - Google Patents

Purificateur d'eau et procédé de détermination des performances d'un système de purification d'eau Download PDF

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Publication number
WO2012120391A1
WO2012120391A1 PCT/IB2012/050729 IB2012050729W WO2012120391A1 WO 2012120391 A1 WO2012120391 A1 WO 2012120391A1 IB 2012050729 W IB2012050729 W IB 2012050729W WO 2012120391 A1 WO2012120391 A1 WO 2012120391A1
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Prior art keywords
water
reactor
light intensity
lamp
purifying chamber
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Ceased
Application number
PCT/IB2012/050729
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English (en)
Inventor
Jun She
Levinus Pieter Bakker
Harko Jan Taekema
Pei Xin HU
Hai Hui WU
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Koninklijke Philips NV
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Koninklijke Philips Electronics NV
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Publication of WO2012120391A1 publication Critical patent/WO2012120391A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C02F1/325—Irradiation devices or lamp constructions
    • 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
    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/429—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to measurement of 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • 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
    • C02F2201/32—Details relating to UV-irradiation devices
    • C02F2201/326—Lamp control systems
    • 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

Definitions

  • the invention relates to a water purifier and a method of determining the performance of a water purifying system.
  • the invention may be used in the field of water purification. BACKGROUND OF THE INVENTION
  • a predetermined time or a predetermined amount of filtered water is used as indicator for filter replacement.
  • these indicators are not very accurate, since water quality impacts the life cycle of the filter. The more contaminants or organic matter present in water, the more contaminants may be left in the filter, and the shorter the life of the filter will be. That is to say, the filter may be overused, which may affect users' health, or underused, causing it to be unnecessarily wasted.
  • specialized monitoring elements are adopted for more accurate detection of performance of the filter.
  • specialized monitoring elements are always large, expensive, and not appropriate for home use.
  • Some water purifying systems comprise both a purifying chamber and a UV lamp.
  • the purifying chamber is adopted for purifying water from a water source.
  • the UV lamp is adopted for disinfecting water coming from the purifying chamber.
  • the intensity of the UV light passing through the water is detected and used to indicate the quality of the purified water.
  • the performance of both the purifying chamber and the UV lamp impacts the quality of purified water, but there is no low-cost, simple-structure solution in the prior art as to how performance degradation of the purifying chamber and the UV lamp can be detected in such a water purifying system.
  • UV absorption can also be used to monitor the performance of the purifying chamber.
  • a higher UV absorption of purified water indicates that the water quality leaves to be desired, and corresponds to a sub-optimal performance of the purifying chamber.
  • the performance of the purifying chamber can be determined by comparing the UV light intensity of purified water with a known UV light intensity of "reference water".
  • the known UV light intensity of "reference water” can be the UV light intensity of known "good water” (e.g. water that has passed through a calibrated filter) or the UV light intensity of water without purification by the purifying chamber.
  • it is an object of the invention to propose a water purifier comprising a UV lamp which is adapted to disinfect water from the purifying chamber and to monitor the performance of elements of the water purifier.
  • the water purifier according to the invention comprises:
  • a reactor comprising a UV lamp for disinfecting water flowing through said reactor;
  • a switch unit adapted to take a first position to allow water coming from said water source to flow through said purifying chamber and to fill said reactor, and adapted to take a second position to allow water coming from said water source to bypass said purifying chamber and fill said reactor,
  • a sensor configured to obtain the light intensity of the light beam emitted by said UV lamp after said light beam has passed through water in said reactor;
  • the performance of the purifying chamber is monitored more accurately and timely.
  • the purifying chamber has reached the end of its life cycle it can be replaced immediately, so that the quality of processed water from this kind of water purifier is better and more stable than that from existing water purifiers.
  • the structure of the water purifier is simple, since only one UV lamp is used for a number of purposes, which makes the water purifier low-cost and appropriate for home use.
  • the invention also relates to a method of determining the performance of a purifying chamber in a system, said system also comprising a reactor with a UV lamp for disinfecting water flowing through said reactor, said purifying chamber being in fluid communication with said reactor, said method comprising the steps of:
  • the invention further relates to a method of detecting the performance of a UV lamp in a water purifying system, which UV lamp is adapted for disinfecting water flowing through a reactor, said method comprising the steps of:
  • Fig.l depicts a water purifier according to the invention
  • Fig. 2 depicts the variation curve of the QSD of a water purifier against the volume of water purified by the purifying chamber according to an embodiment of the invention
  • Fig.3 depicts another water purifier according to the invention
  • Fig.4 depicts a method according to the invention of determining the performance of a purifying chamber in a system
  • Fig.5 depicts a method according to the invention of detecting the performance of a UV lamp in a water purifying system.
  • Fig. l depicts a water purifier 100 according to the invention.
  • the water purifier 100 comprises:
  • a reactor 20 comprising a UV lamp 25 for disinfecting water flowing through said reactor 20;
  • a switch unit 30 adapted to assume a first position to allow water coming from said water source 80 to flow through said purifying chamber 10 and fill said reactor 20, and adapted to assume a second position to allow water coming from said water source 80 to bypass said purifying chamber 10 and fill said reactor 20,
  • a sensor 40 configured to obtain a light intensity of the light beam being emitted by said UV lamp 25 and passing through water in said reactor 20; and - a processor 50 adapted to:
  • the purifying chamber 10 comprises a filter capable of removing contaminants, such as a carbon filter. Water flowing through the purifying chamber 10 will be purified by the carbon filter.
  • the purifying chamber 10 comprises an oxidation reactor. Water flowing through the purifying chamber 10 will be purified by oxidation reaction, for example making use of ozone (O3) or hydrogen peroxide (H 2 0 2 ) as oxidant, or other hydroxy
  • the purifying chamber 10 When the water purifier 100 is connected to the water source 80, the purifying chamber 10 is in fluid communication with the water source 80 and the reactor 20, respectively, and the reactor 20 is also in fluid communication with the water source 80 bypassing the purifying chamber 10.
  • the fluid communication is achieved by means of pipes between the water source 80, the purifying chamber 10 and the reactor 20.
  • the water source 80 may correspond to tap water or water stored in a tank.
  • the water purifier 100 may further comprise a pump (not shown), or the water purifier 100 may be disposed below the tank, so that the force of the pump or the potential difference could cause water to flow through the water purifier 100 along the paths generally indicated by the arrows.
  • the hydraulic pressure of tap water could cause water to flow through the water purifier 100 along the paths generally indicated by the arrows.
  • the switch unit 30 comprises a first switch (valve) 31 and a second switch (valve) 32.
  • the first switch 31 is in the path between the water source 80 and the purifying chamber 10, while the second switch is in the path between the water source 80 and the reactor 20.
  • the switch unit 30 When the switch unit 30 is in the first position, the first switch 31 is open and the second switch 32 is closed, such that water coming from the water source 80 will flow through the purifying chamber 10 and fill the reactor 20.
  • the switch unit 30 When the switch unit 30 is in the second position, the first switch 31 is closed and the second switch 32 is open, such that water coming from the water source 80 will bypass the purifying chamber 10 and fill the reactor 20.
  • the switch unit comprises a shunt valve with one inlet configured to be connected to a water source and two outlets connected to the purifying chamber and the reactor, respectively, such as, for example the switch unit 30a as shown in FIG.3.
  • the shunt valve When the shunt valve is in the first position, the first outlet (e.g. the upper outlet shown in Fig.3) is open and the second outlet (e.g. the lower outlet shown in Fig.3) is closed, such that water coming from the water source 80a will flow through the purifying chamber 10a and fill the reactor 20a.
  • the shunt valve is in the second position, the first outlet is closed and the second outlet is open, such that water coming from the water source 80a will bypass the purifying chamber 10a and fill the reactor 20a.
  • the change of the position of the switch unit 30 may be controlled by the processor 50.
  • a signal may be represented, for example by a display unit (not shown), to inform the user of the change in position of the switch unit 30.
  • the UV lamp 25 is used for disinfecting water flowing through the reactor 20. As shown in Fig. l, the UV lamp 25 is positioned at the centre of reactor 20, and omnidirectional UV light beams are emitted from this UV lamp 25. The UV light beams emitted by UV lamp 25 then pass through the water in reactor 20. Alternatively, the UV lamp 25 could also be located at any other feasible place, for example at an inner wall of the reactor 20. Thus, a directional UV light beam might be emitted towards water in the reactor 20, resulting in a higher emission efficiency and a lower power consumption. The UV light beams emitted by UV lamp 25 then pass through water in the reactor 20.
  • the sensor 40 is generally located in or around the reactor 20, such that the sensor 40 can receive light beams emitted by UV lamp 25 after these light beams have passed through water in the reactor 20. Thus, the sensor 40 can obtain the light intensity of the UV light beam emitted by the UV lamp 25 after the light beam has passed through water in the reactor 20.
  • the switch unit 30 switches between entirely closed and the first position, i.e. the second switch 32 is closed while the first switch 31 is open, so that water coming from the water source 80 is purified in the purifying chamber 10 and disinfected in the reactor 20, and then flows out of the water purifier 100.
  • the obtained light intensity corresponding to purified water i.e. the light intensity obtained when the switch unit 30 is in the first position and the water filled into the reactor 20 has passed through the purifying chamber 10 before entering reactor 20, is referred to as first light intensity.
  • the obtained light intensity corresponding to unpurified water i.e. the light intensity obtained when the switch unit 30 is in the second position and the water filled into the reactor 20 has not previously passed through the purifying chamber 10, is referred to as second light intensity.
  • the processor 50 is adapted to obtain at least one first light intensity from the sensor 40 and at least one second light intensity from the sensor 40 and to determine the performance of the purifying chamber 10 on the basis of said at least one first light intensity and said at least one second light intensity.
  • logI logI t - ax (2), wherein x is a distance which is fixed in the water purifier 100, I t is intensity of UV light emitted from the UV lamp 25 at time t, I is the light intensity that can be measured by the sensor 40 and a is the UV absorption rate of the water in the reactor 20.
  • a t is the difference between the UV absorption rate of purified water and the UV absorption rate of unpurified water within the certain time interval t, which could be referred to as quasi-synchronous difference between UV absorption rates of purified water and unpurified water, QSD for short.
  • the QSD is strongly relevant to the performance of the purifying chamber 10 and substantially irrelevant to the performance of the UV lamp 25, since the performance of the UV lamp 25 could be considered as invariable within the certain time interval t and the influences from the UV lamp 25 cancel out in formula (5).
  • the QSD represents the purification degree of the water passing through purifying chamber 10, which is a good indicator of the performance of the purifying chamber 10. The higher the QSD value, the better the performance of the purifying chamber 10 is.
  • the water purifier 100 may further comprise a display unit (not shown).
  • the display unit is controlled so as to show an indicator for indicating that the purifying chamber 10 needs to be replaced.
  • the indicator may indicate that the carbon filter needs to be replaced.
  • the indicator may indicate that the oxidation reactor needs to be supplied with oxidant.
  • the processed water is much safer to drink due to said purification and UV disinfection steps, and the performance monitoring is much more accurate due to the UV absorption detection technology, enabling elements with poor performance to be renewed in time, so that the quality of processed water is good and stable.
  • the water purifier 100 is of comparatively low cost and small in size, because of the design of the multipurpose UV lamp and the use of only one UV sensor, which makes it more appropriate for home use.
  • the water purifier 100 further comprises a filter (not shown) in the path between the second switch 32 and the reactor 20.
  • This filter is configured to filter water coming from the water source 80 before the water enters the reactor 20, wherein, if the switch unit 30 is in the second position, water flows through this filter before filling the reactor 20.
  • This filter is only used for calibration. That is to say, water from this filter is deemed to be of good quality and is used as reference to determine the quality of other water. With the implementation of this filter, when the second light intensity is obtained, water bypassing the purifying chamber 10 and being filled into the reactor 20 has a stable quality.
  • the purifying chamber 10 of the water purifier 100 comprises a carbon filter.
  • Fig.2 depicts the variation curve of the QSD of such a water purifier 100 against the volume of water purified by the purifying chamber 10.
  • the QSD (Aa t ) drops as the water volume purified by the filter in the purifying chamber 10 increases, so that its curve is similar to that of a negative exponential distribution.
  • the switch unit 30 switches between an entirely closed position and the first position in a normal working condition. It is intelligible that the second light intensity is unattainable in the normal working condition, thus, a preferred monitoring process is given hereinbelow.
  • the switch unit 30 is initially set to the second position, so that the reactor 20 is flushed by and filled with water coming from the water source 80 and bypassing the purifying chamber 10, thus enabling the reference second light intensity I 20 to be obtained.
  • the switch unit 30 is switched to the first position, so that the water in the reactor 20 is replaced by water coming from the water source 80 and passing through the filter in the purifying chamber 10, thus enabling the reference first light intensity I 10 to be obtained.
  • the reference QSD could be obtained, i.e.
  • the water purifier 100 works in a normal working phase, so that water coming from the water source 80 will be purified in the purifying chamber 10 and disinfected in the reactor 20, and then flows out of the water purifier 100.
  • a first light intensity will be obtained in accordance with a predetermined schedule, for example once every preset period of time or once every preset volume of water purified by the purifying chamber 10.
  • the updated first light intensity is represented as I lt . It could be derived from formula (3) that
  • I 0 is the intensity of UV light emitted from the UV lamp 25 during the initialization phase.
  • the detected intensity of a UV light beam depends on the emission intensity of the UV lamp and the path loss, wherein the emission intensity is relevant to the performance of the UV lamp, while the path loss is relevant to the water quality and the travel distance of the UV light beam.
  • the difference between the reference first light intensity I 10 and the updated first light intensity I lt is relevant to the performance variation of the UV lamp and the variation of the water quality, wherein the variation of the water quality could be further attributed to the performance variation of the purifying chamber.
  • the first part of (logl 0 - logI t ) is relevant to the performance variation of the UV lamp 25, while the second part of (a lt - a 10 ) x is relevant to the performance variation of the filter in the purifying chamber 10. Therefore, logl 10 - logl lt is a good indicator of the overall performance of the water purifier 100.
  • emission intensity is much more important than water quality to the detected UV light intensity, therefore, the performance variation of the UV lamp, if any, is much more important to the difference between the reference first light intensity I 10 and the updated first light intensity I lt than the performance variation, if any, of the purifying chamber.
  • logl 10 - logl lt > A l Aa 0 x (8) could be used to estimate the overall performance of the water purifier 100, wherein A j is a predetermined threshold. If formula (8) is not satisfied, then the overall performance of the water purifier 100 is OK, meaning that the water purifier 100 can still operate in normal working conditions. Otherwise, if formula (8) is satisfied, then the performance of the filter in the purifying chamber 10 or the performance of the UV lamp 25 decreases too much, meaning that at least one of the filter and the UV lamp needs to be replaced by a standby element. When formula (8) is satisfied, the water purifier 100 turns to an estimation phase.
  • the up-to-date QSD could be used for further estimation of the performance of the filter.
  • the following formula e.g.
  • Aa t ⁇ A 2 (10) could be used, wherein A 2 is a predetermined threshold of QSD. If formula (10) is satisfied, it means that the performance of the filter in the purifying chamber 10 decreases too much, so that the filter needs to be replaced by a standby filter. According to another example, an approximate integral of the curve in Fig.2 could be used for further estimation of the performance of the filter. To be specific, the following formula, e.g.
  • V 0 is the total volume of water purified by the filter when the reference first light intensity I 10 is obtained
  • V t is the total volume of water purified by the filter when the up-to-date first light intensity I lt is obtained
  • a 3 is a predetermined threshold of filter performance
  • ⁇ -( ⁇ , + Aa 0 )(V t - V 0 ) is the approximate integral of the curve in
  • the water purifier 100 further comprises a sensor (not shown), such as a flowmeter, adapted for measuring the total volume of water purified by the filter (i.e. the purifying chamber 10).
  • the water purifier 100 may further comprise a display unit (not shown).
  • the display unit is controlled so as to show a corresponding indicator to warn the user.
  • the processor 50 is further adapted for determining the performance of the UV lamp 25 on the basis of the reference second light intensity I 20 and the up-to-date second light intensity I 2t .
  • the following formula e.g.
  • the display unit is controlled so as to show a corresponding indicator to warn the user.
  • the filter in the purifying chamber 10 and the standby filter(s) are preferably of the same type or specifications, and the UV lamp 25 and the standby UV lamp(s) are preferably also of the same type or specifications.
  • the above thresholds i.e. A j , A 2 , A 3 and A 4 , should be measured in advance or predetermined for the combination of this type of filter and this type of UV lamp. Otherwise, a plurality of sets of thresholds should be measured in advance or predetermined, each set of threshold corresponding to a combination of one possible type of filter and one possible type of UV lamp.
  • the purifying chamber 10 of the water purifier 100 comprises an oxidation reactor.
  • a preferred monitoring process which is similar to that mentioned above, is given hereinbelow.
  • the water purifier 100 operates in a normal working phase as mentioned above.
  • the first light intensity will be obtained in accordance with a predetermined schedule, for example once every preset period of time or once every preset water volume purified by the purifying chamber 10.
  • the up-to-date first light intensity is represented as I lt .
  • logl 10 - logl lt could be calculated as an indication of the overall performance of the water purifier 100.
  • the up-to-date QSD (A t ) can be obtained.
  • the up-to-date QSD could be used for further estimation of the performance of the filter.
  • the following formula e.g.
  • Aa t ⁇ A 6 (14), could be used, wherein A 6 is a predetermined QSD threshold. If formula (14) is satisfied, then the performance of the oxidation reactor in the purifying chamber 10 decreases too much, meaning that the oxidation reactor needs to be adjusted, for example replenishment of oxidant.
  • the processor 50 is further adapted for determining the performance of the UV lamp 25 on the basis of the reference second light intensity I 20 and the up-to-date second light intensity I 2t .
  • the following formula e.g.
  • the UV lamp 25 and the standby UV lamp(s) are preferably of the same type or specifications. It is intelligible that the thresholds A 5 , A 6 and A 7 may be different from A j , A 2 and A 4 , because of the difference between a filter and an oxidation reactor.
  • Fig.3 depicts a water purifier 100a according to the invention.
  • the water purifier 100a has a structure similar to that of the water purifier 100, except for the difference between the switch unit 30a and the switch unit 30.
  • the switch unit 30a comprises a shunt valve with one inlet connected to the water source 80a and two outlets connected to the purifying chamber 10a and the reactor 20a, respectively.
  • water flows through the water purifier 100 along the paths generally indicated by the arrows.
  • the switch unit 30a When the switch unit 30a is in the first position, the upper outlet (as shown in Fig.3) is open and the lower outlet (as shown in Fig.3) is closed, so that water coming from the water source 80a will flow through the purifying chamber 10a and fill the reactor 20a.
  • the switch unit 30a When the switch unit 30a is in the second position, the upper outlet is closed and the lower outlet is open, so that water coming from the water source 80a will bypass the purifying chamber 10a and fill the reactor 20a.
  • the water purifier 100a further comprises a filter 16a for filtering the water coming from the water source 80a before it enters the reactor 20a, wherein, if the switch unit 30a is in the second position, water flows through the filter 16a before it fills the reactor 20a.
  • This filter 16a is only used for calibration. That is to say, water from filter 16a is deemed to be water of good quality and is used as reference to determine the quality of other water. With the implementation of the filter 16a, when the second light intensity is obtained, water bypassing the purifying chamber 10a and filling the reactor 20a has stable quality.
  • the purifying chamber 10a comprises a carbon filter
  • a similar preferable monitoring process as mentioned above could be implemented by the processor 50a. It is intelligible that the thresholds may be different from A j , A 2 , A 3 and A 4 , because of the introduction of the filter 16a.
  • the purifying chamber 10a comprises an oxidation reactor
  • a similar preferable monitoring process as mentioned above could also be implemented. It is intelligible that the thresholds may be different from A 5 , A 6 and A 7 , because of the introduction of the filter 16a.
  • Fig.4 depicts a method according to the invention of determining the performance of a purifying chamber in a system, said system also comprising a reactor with a UV lamp for disinfecting water flowing through said reactor, said purifying chamber being in fluid communication with said reactor. Said method comprises the steps of:
  • This method corresponds to a monitoring process carried out by the processor 50 in a water purifier according to Fig.1, or it corresponds to a monitoring process carried out by the processor 50a in a water purifier according to Fig.3.
  • said purifying chamber comprises a carbon filter or an oxidation reactor.
  • water from said water source is tap water.
  • said method further comprises a step preceding step S43: - obtaining the volume of water purified by said purifying chamber.
  • This step corresponds to an operation carried out by the flowmeter as mentioned above.
  • Said step S43 further comprises: - determining the performance of said purifying chamber on the basis of said first light intensity, said second light intensity and said volume.
  • This step corresponds to the further estimation of the performance of the filter by using an approximate integral of the curve in Fig.2 as an indicator, as mentioned above.
  • said system further comprises a filter adapted for filtering the water from said water source before it enters said reactor, wherein, in step S42, water in said reactor has flowed through said filter before entering said reactor.
  • This filter corresponds to filter 16a, as mentioned above.
  • Fig.5 depicts a method according to the invention of detecting the performance of a UV lamp in a water purifying system, said UV lamp being adapted for disinfecting water flowing through a reactor. Said method comprises the steps of:
  • Step S51 corresponds to the step of obtaining a reference second light intensity during the initialization phase as mentioned above, which is carried out by the processor.
  • Step S52 corresponds to the step of obtaining the up-to-date second light intensity during the estimation phase as mentioned above, which is carried out by the processor.
  • Step S53 corresponds to the further estimation of the performance of the UV lamp, which is carried out by the processor.
  • water from said water source is tap water.
  • water in said reactor is purified by a filter before it enters said reactor.
  • This step corresponds to the action carried out by the filter 16a, as mentioned above.
  • step S51 is executed the first time to flush said UV lamp. This feature corresponds to the step of obtaining a reference second light intensity during the initialization phase as mentioned above, which is carried out by the processor.
  • said method further comprises the step preceding step S52: - determining the performance of said water purifying system;
  • step S52 and step S53 are executed.
  • This step corresponds to the estimation of the overall performance of the water purifier as mentioned above, which is carried out by the processor.

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  • Physical Water Treatments (AREA)

Abstract

L'invention se rapporte à un purificateur d'eau et à un procédé de détermination des performances d'un système de purification d'eau, ledit purificateur d'eau comprenant : une chambre de purification (10) pour purifier l'eau provenant d'une source d'eau (80); un réacteur (20) comprenant une lampe UV (25) pour désinfecter l'eau s'écoulant dans ledit réacteur (20); une unité de commutation (30) conçue pour prendre une première position afin de permettre à l'eau provenant de ladite source d'eau de s'écouler dans ladite chambre de purification (10) et de remplir ledit réacteur (20), et conçue pour prendre une seconde position afin de permettre à l'eau provenant de ladite source d'eau de contourner ladite chambre de purification et de remplir ledit réacteur; un capteur (40) configuré pour obtenir l'intensité lumineuse du faisceau lumineux émis par ladite lampe UV (25) une fois que ledit faisceau lumineux a traversé l'eau dans ledit réacteur; et un processeur (50) conçu pour : obtenir une première intensité lumineuse à partir dudit capteur, lorsque ladite unité de commutation se trouve dans ladite première position; obtenir une seconde intensité lumineuse à partir dudit capteur, lorsque ladite unité de commutation se trouve dans ladite seconde position; et déterminer les performances de ladite chambre de purification sur la base de ladite première intensité lumineuse et de ladite seconde intensité lumineuse.
PCT/IB2012/050729 2011-02-25 2012-02-17 Purificateur d'eau et procédé de détermination des performances d'un système de purification d'eau Ceased WO2012120391A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNPCT/CN2011/071308 2011-02-25
CN2011071308 2011-02-25

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WO2012120391A1 true WO2012120391A1 (fr) 2012-09-13

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TW (1) TW201307210A (fr)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11027038B1 (en) 2020-05-22 2021-06-08 Delta T, Llc Fan for improving air quality
US11400177B2 (en) 2020-05-18 2022-08-02 Wangs Alliance Corporation Germicidal lighting

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007031041A1 (fr) * 2005-09-15 2007-03-22 Stephan Schneider Dispositif de desinfection de liquides au moyen de lampes a uv
US20080190826A1 (en) * 2007-02-09 2008-08-14 Miner Jeffery G Ballast water treatment system
WO2010062032A2 (fr) * 2008-11-28 2010-06-03 주식회사 파나시아 Système de traitement des eaux de ballast

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007031041A1 (fr) * 2005-09-15 2007-03-22 Stephan Schneider Dispositif de desinfection de liquides au moyen de lampes a uv
US20080190826A1 (en) * 2007-02-09 2008-08-14 Miner Jeffery G Ballast water treatment system
WO2010062032A2 (fr) * 2008-11-28 2010-06-03 주식회사 파나시아 Système de traitement des eaux de ballast

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11400177B2 (en) 2020-05-18 2022-08-02 Wangs Alliance Corporation Germicidal lighting
US11433154B2 (en) 2020-05-18 2022-09-06 Wangs Alliance Corporation Germicidal lighting
US11612670B2 (en) 2020-05-18 2023-03-28 Wangs Alliance Corporation Germicidal lighting
US11696970B2 (en) 2020-05-18 2023-07-11 Wangs Alliance Corporation Germicidal lighting
US12109338B2 (en) 2020-05-18 2024-10-08 Wangs Alliance Corporation Germicidal lighting
US11027038B1 (en) 2020-05-22 2021-06-08 Delta T, Llc Fan for improving air quality

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