CN102099302B - Apparatus for the purification of liquid, method for washing a hollow-fibre filter and use of the method for washing a hollow-fibre filter - Google Patents
Apparatus for the purification of liquid, method for washing a hollow-fibre filter and use of the method for washing a hollow-fibre filter Download PDFInfo
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- CN102099302B CN102099302B CN200980127859.6A CN200980127859A CN102099302B CN 102099302 B CN102099302 B CN 102099302B CN 200980127859 A CN200980127859 A CN 200980127859A CN 102099302 B CN102099302 B CN 102099302B
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- 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
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
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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
- B01D61/58—Multistep processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
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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
- B01D2311/04—Specific process operations in the feed stream; Feed pretreatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/04—Backflushing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/18—Use of gases
- B01D2321/185—Aeration
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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
- B01D61/025—Reverse osmosis; Hyperfiltration
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- 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
- C02F2103/08—Seawater, e.g. for desalination
-
- 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
- C02F2303/04—Disinfection
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- 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
- C02F2303/16—Regeneration of sorbents, filters
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- 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
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present group of inventions relates to devices for the purification of liquids and can, in particular, be utilised for the purification of drinking water and waste waters, including sea, river, lake and well water, by removing polar and non-polar organic substances, ions of heavy metals, microorganisms and a significant amount of salts. The group of inventions can be used both for the collection and purification of liquid from open sources and non-pressurised vessels, and also for the collection and purification of liquid, particularly drinking water, from domestic drinking water lines. An apparatus for the purification of liquid comprises means for supplying liquid to be purified, an electro-coagulation unit, a hollow-fibre filter with liquid backwash, a reverse osmosis unit, a collecting vessel, a non-return valve and means for drawing off the purified liquid. The hollow-fibre filter is backwashed first with liquid and then with a pressurised mixture of liquid and air, fed from the collecting vessel. While liquid is being pumped from the collecting vessel, atmospheric air is fed into the collecting vessel using the non-return valve. The proposed water purification apparatus makes it possible to extend the service life of the membranes used in the apparatus, and furthermore the system for the purification of liquid permits assembly in the form of a compact apparatus with a weight of a few kilograms, so that it can be carried by hand.
Description
Technical field
Required for protection group of the present invention relates to fluid purifying apparatus, and can be mainly used in coming purifying drinking water and waste water (comprising seawater, river, lake water and well water) by what remove polarity with nonpolar organic substance, heavy metal ion, microorganism and a large amount of salt.Of the present invention group can be used for from the entering and purifying of the liquid of unsealed source and non-pressurised vessel, and also can be used for entering and purifying of liquid (being mainly tap water) from household water pipe.
Background technology
In the prior art, the fluid purification system of the combination based on membrane filtration (membrane filtration) and reverse osmosis is known.Conventionally, this system be provided with allow from film surface periodic remove one deck filtering particle so that its perviousness is kept to constant backwash mode.
And the electricity consumption system that (electro-coagulation) remove the organic substance dissolving from water of condensing is known in the art.
(calendar year 2001 is open for Russ P No.2171787, C02F 1/18) a kind of housed device for purifying drinking water described, it comprises: for supplying the device of water to be clean, thick clean unit, coagulation statement of account unit, flocculating chamber, smart clean unit, carrying out the unit of clean and for the discharge equipment of purified water, the installation continuously of these devices by ultraviolet radiation.
Coagulation statement of account unit is the system of the plate arranging abreast and made by aluminium or its alloy.Need flocculating chamber to assemble and deposit aluminium hydroxide.Preferably, need the filter cylinder filtering element of periodic replacement as fine filter.In system, do not use the film micro-filtration or the ultra-filtration element that conventionally allow to repeat regeneration.
At the special chamber for coagulative flocculation and precipitation, the critical defect of described invention is inevitable.From description of the invention, can reach a conclusion: flocculating chamber has large size and weight.The certainty of large and heavy settling chamber has limited significantly and has not been provided with the coagulative suitability that is forced to the household electric condensed system of separated unit (for example, micro-filtration unit).
With the immediate technical scheme of proposed scheme be the water correction plant that is considered to prototype, this equipment comprises: for supplying the device of water to be clean, thick clean unit, the micro-filtration unit with periodically backwash, reverse osmosis units, for collecting the container of aggregation and for the discharge equipment of purified water, these devices are installed continuously (U.S. Patent No. 6 in treating processes, 120,688,2000 open, C 02 F1/44).
To there is the strainer of pore size of 500 microns as thick clean unit.Using the module of being made by the hollow periosteum with the pore size of 0.2nm as micro-filtration unit, this module is provided with compressor having internally mounted to blow (blow off) film module off with bubble, to avoid pollutent to deposit on the working-surface of fiber.With the enriched material (concentrate) of pressurization, periodically carry out the cleaning of the module that is provided with hollow-fibre membrane, in the special container in described equipment, collect described enriched material.And be provided with the module of hollow-fibre membrane in cleaning during, enriched material is used to supply reverse osmosis units, because now the water after filtration is not supplied to system in micro-filtration unit.Enriched material is supplied to non-pressurised collection container, and when container is full of, freely by its discharge.By pump, carry out from container supply enriched material to carry out backwash; The enriched material dropping in film side is relative with work one side, and removes pollutent.
When controller sends signal, by opening magnetic valve, automatically carry out backwash.In backwash, only make water, without air, this can reduce its effect.
Known equipment is designed to purify the water (comprise seawater, surface water, from the water with region and other sources of unfavorable ecotope) of any quality, and for carrying out purifying drinking water by removing the salt of microorganism, virus, macromolecular compound and heavy metal.
A shortcoming of this equipment is the shorter work-ing life of reverse osmosis membrane.This is that infiltrative sharply reducing due to fenestra causes, and thisly reduces to be due to the former of the macromolecular compound in purified water thereby cause, and the absorption process using in prototype can not be by removing these compounds in the initial purge stage.
In addition, the shortcoming of known device is the complicated and expensive system for air compressing and distribution, wherein, micro-filtration module blow continuously the development that impels its lip-deep aerobic bacteria off.In addition, the large water gaging of this devices consume, and additionally comprise for cleaning power abundance and the bulky pump of micro-filtration module.All these all make the structure of known device become complicated, and improve its price.
Conventionally, the water that the film device using in the most modern water purification system allows substantially to concentrate detrimental impurity and obtains the deep purifying that is suitable for follow-up use, for example, in service water is used.The subject matter producing in the use of membrane technique (reverse osmosis, micro-filtration and ultra-filtration) is, in purified water, solvable macromolecule organic matter is contained to quantitative limitation.Owing to substantially reducing in work-ing life of used film, these impurity limit the use of membrane technique substantially.
Summary of the invention
The main purpose of of the present invention group and the technique effect of requirement are that is provided the work-ing life of effective ways and the film that prolongation is used in equipment of a kind of new liquid purification equipment, cleaning hollow fiber filter.
Another object of of the present invention group is, provides with the prototype with several kilograms of weight and compares the possibility that system is assembled into compact device, and its available hand is carried.
By being provided, a kind of liquid purification equipment realizes the technique effect of this object and the of the present invention group of requirement producing of use, this liquid purification equipment comprises: for supplying the device of liquid to be clean, the hollow fiber filter with liquid backwash, reverse osmosis units, there is the collection container of upper arm and lower branch line and for the discharge equipment of purified liquid, according to the present invention, there is coagulation statement of account unit, its input terminus (input) is connected to the output terminal (output) for supplying the device of liquid to be clean, and its output terminal is connected to the input terminus of hollow fiber filter, have for atmospheric air being supplied to the vacuum breaker of collection container, this collection container is arranged in its inner vacuum that produces, be used for supplying atmospheric air and for first using liquid backwash hollow fiber filter, then with the liquid of supply therefrom and the mixture of air, carry out backwash.Can will be arranged in the top of collection container for atmospheric air being supplied to the vacuum breaker of collection container, or be arranged on the pipeline being connected with the upper arm of collection container.The upper arm of collection container is arranged to go deep into its inside, wherein goes up the lower rim of arm than the high 50mm of being no less than of lower branch line.Lower branch line is intended to liquid to be supplied to reverse osmosis units, and reverse osmosis units is arranged as and in collection container, produces vacuum.Upper arm is intended to for liquid is supplied to collection container, so that liquid flows out, then the mixture of liquid and air is supplied to hollow fiber filter.
The method of cleaning hollow fiber filter by execution realizes this object and the technique effect that uses the requirement of of the present invention group, the method comprises backwash, according to the present invention, first with liquid, carry out backwash, then use from the liquid of collection container supply and the pressurised mixt of air and carry out backwash.In collection container pumping liquid, with vacuum breaker, atmospheric air is supplied in collection container.Carry out backwash and be less than the time of 5 seconds, preferably, be less than 3 seconds.In the starting stage, under the pressure that the air cushion in the top by collection container produces, with liquid, carry out backwash.
Have the module of hollow-fibre membrane in backwash before, the pressure of the atmospheric air in collection container is owing to increasing by the upper arm pressure that enters the liquid in described collection container without interruption.When reaching the defined pressure of compressed atmosphere air, and the liquid level in collection container is during higher than the end of the lower rim of upper arm, cleaning process starts, by described upper arm, supply liquid to clean, and when liquid level is when reaching the end of lower rim of upper arm, air starts by described upper arm for cleaning, take away remaining a part of liquid in collection container, form the mixture of liquid and air, in the terminal stage of cleaning, use this mixture, wherein carry out the high-efficient purification that at least one is provided with the module of hollow-fibre membrane.When the backwash stage finishes, the lower branch line by remaining liquid by collection container is pumped in reverse osmosis units, because atmospheric air enters collection container outside by vacuum breaker, and in collection container, produces vacuum.With only with liquid, clean and compare, the use of liquid and air combination has increased considerably the effect that hollow fiber filter cleans.
Compare with prototype, liquid purification equipment comprises the coagulation statement of account unit for the deep purifying of liquid (preferably, tap water), wherein occurs the front additional phase of film of fluid purification.This permission is transformed into colloid by organic compound, by follow-up filtration separated colloid like a cork, protects thus reverse osmosis membrane and extends its work-ing life.
The liquid purification equipment proposing is characterised in that a kind of high performance method that first cleans the mixture cleaning hollow fiber filter of then using liquid and air with liquid, compares with prototype, and the method does not need extra bulky pump and air compressor.
In addition,, along with described film ingress of air (only during cleaning) periodically, air can not cause starting to develop and forming on the surface of hollow-fibre membrane bacterium and microbial film.
Accompanying drawing explanation
Below, with reference to accompanying drawing, show the disclosure of of the present invention group, in the accompanying drawings:
Fig. 1 shows the general view of liquid purification equipment;
Fig. 2 shows the collection container that is connected to vacuum breaker by pipeline;
Fig. 3 shows the collection container that the joint by being directly installed in top is connected with vacuum breaker;
Fig. 4 shows the collection container with the liquid level before starting backwash;
Fig. 5 shows has the immediately collection container of the liquid level after backwash;
Fig. 6 shows at the collection container to during reverse osmosis units pumping liquid.
Embodiment
Liquid purification equipment comprises: for supplying the device 1, coagulation statement of account unit 2, hollow fiber filter 3, reverse osmosis units 4, collection container 5 of liquid to be clean, for exporting the discharge equipment 6 of purified liquid, these devices are installed (Fig. 1) continuously.
For supplying the output terminal of the device 1 of liquid to be clean, be connected to the input terminus of coagulation statement of account unit 2.Coagulation statement of account unit 2 is systems of electrode, and these electrodes can be set to following form: the plate being arranged in parallel or embedded concentric tube, be arranged as apply 100V constant/pulsed voltage.Anode is made of aluminum.Negative electrode can for example, be made by aluminium and inert material (, stainless steel).When two electrodes are each made of aluminum, the voltage of alternating current with change in polarity are applied and is no less than 10-4 second, so that they are dissolved equably.The degree that can pollute according to water regulates levels of current.The output terminal of coagulation statement of account unit 2 is connected to the input terminus of hollow fiber filter 3, and the module that this hollow fiber filter is provided with hollow-fibre membrane by least one forms.By having the module of hollow-fibre membrane 8, carry out filtration, this hollow-fibre membrane has, for example, and from 0.01 to 5 μ m, preferably, the hole of from 0.05 to 0.8 μ m.The output terminal of hollow fiber filter 3 is connected to collection container 5, and wherein the volume of collection container 5 surpasses 2 to 10 times of volume of hollow fiber filter 3.Collection container 5 has upper arm 14 and lower branch line 15.Upper arm 14 partly gos deep in container 5, wherein the lower cut of upper arm 14 is placed in container 5, than lower branch line 15 height be greater than 50mm.Lower branch line 15 is intended to liquid to be supplied to reverse osmosis units 4, and in the interior vacuum possibility of collection container 5.Upper arm 14 is intended to liquid to be supplied to collection container 5, for liquid is flowed out, then the mixture of liquid and air is supplied to hollow fiber filter 3.By vacuum breaker 21 supply atmospheric airs.Described valve 21 can be arranged on pipeline 19, this pipeline is connected to the upper arm 14 (Fig. 2) of collection container 5 or for example, in the top of collection container 5 (, in the top of collection container 5 in direct-connected joint).In collection container 5, produce the mixture of liquid and air, with adverse current, clean hollow fiber filter 3.By valve, automatically regulate the process of backwash.Conventionally, carry out cleaning and be less than 5 seconds, preferably, be less than 3 seconds.Collection container 5 is connected to reverse osmosis units 4.The module that reverse osmosis units 4 is provided with reverse osmosis membrane 18 by pump 16, at least one module 17 for adsorption cleaning and at least one forms.By Trunk Line 10, carry out the discharge of pollutent, by Trunk Line 6, discharge the liquid purifying, for using (Fig. 1).
If liquid purification equipment is intended to introduce liquid from unsealed source and non-pressurised vessel, so, for supplying the device 1 of liquid to be clean, may be the form of the provisioning component for example being formed by coarse filter and pump.As coarse filter, preferably use one group of grid and/or the deep filter (flat filtration device or the filtering cartridge filter of nonwoven fabric layer form) of the mechanical contamination thing can retain 20 to 1000 μ m.
If liquid purification equipment is intended to from main forcing pipe line, for example, from household water pipe, introduce liquid, for supplying the device 1 of liquid to be clean, may be the form that is provided with the joint of valve so.
Liquid purification equipment operates in the following manner:
Process from unsealed source and non-pressurised vessel, for supplying the liquid of the device 1 of liquid to be clean, is supplied to the input terminus of coagulation statement of account unit 2.
In coagulation statement of account unit 2, liquid flows through electrode system, electrode produces the aluminium hydroxide that causes macromolecular organic compound to condense when dissolving, the existence of the even a small amount of macromolecular organic compound in liquid to be clean all can be shortened the work-ing life of reverse osmosis membrane sharp, and partly shortens the work-ing life of filtering membrane.Immediately following after coagulation statement of account unit 2, vacuum breaker 7 can be set, it is for preventing into the reverse flow in water direction in high pressure lower time when hollow fiber filter 3.
Liquid from coagulation statement of account unit 2 is supplied to the input terminus of hollow fiber filter 3.When liquid process hollow fiber filter 3, remove the gluey aluminium hydroxide with absorption macromolecule organic matter thereon, only retain low molecular organic material and non-organic ion.After filtering, by valve 12, liquid is supplied to the pump 16 of reverse osmosis units 4.Pump 16 guides to by liquid the adsorption cleaning module 17 that at least one removes remaining organic substance therein, then guides to the module of at least one reverse osmosis membrane that is provided with the hole with 0.0001 μ m 18.Reverse osmosis membrane has the narrowest hole, and is best selection thus.They use in the terminal stage of fluid purification, because it can leave bacterium, virus and most of soluble salt and organic substance.
At liquid, through after being provided with the module of reverse osmosis membrane, produce liquid and the enriched material of penetrant-purification.Penetrant is supplied to use on Trunk Line 6, and enriched material (being further called simply liquid) is supplied in collection container 5 by drain control unit 20 on Trunk Line 19.Now, valve 9,11,12 cuts out.
Before the backwash stage starts, rely on the atmospheric air of using in the liquid compression container that continuously flows into container, the pressure in collection container 5 is increased gradually.Preferably, reach be not less than 1.5 and be not more than 10 normal atmosphere and liquid level higher than on during the otch of arm 14, valve 9,11 is forced to open and valve 12 is forced to cut out simultaneously.For example, by special controller system, provide valve 9,11,12 during operation of equipment and 13 the execution that is forced to opening/closing and back-washing method.
When clean starting, under the pressure being produced by air cushion, by the liquid from collection container 5 (Fig. 4) from top by arm 14 be supplied to the input terminus of hollow fiber filter 3, and clean the module that at least one is provided with hollow-fibre membrane 8.When the water surface in collection container reaches the lower cut of upper arm 14 (Fig. 5), in the top of collection container 5, push the air of its internal liquid, start from collection container 5, to be supplied to output terminal by described upper arm 14, take away the part at described container 5 interior remaining liqs.Now, at the mixture of the interior generation liquid of collection container 5 and air.A large amount of bubbles in the mixture of described liquid and air are by the hole of hollow-fibre membrane, different from prototype, better purification is provided, in prototype, the bubble being produced by the air compressor separating in micro-filtration unit is only removed pollutent from the outside surface (operating surface) of membrane fiber, does not in depth penetrate in its hole.Every 1m for hollow-fibre membrane
2, the speed of backwash may be 3 to 20ml every 1 second.Total scavenging period of hollow fiber filter 3 be not more than continuous device operation total time 2%.
By Trunk Line 10 releases.When completing scavenging process, force valve 9,11 to be closed, and valve 13 is opened.Pump 16 starts to pump the liquid at least one adsorption cleaning module 17 by lower branch line 15, and further at least one, is provided with the module of reverse osmosis membrane 18.In pump period, the exhaust in described container 5 increases, need to be by vacuum breaker 21 supply atmospheric airs (Fig. 6).In addition, owing to using remaining cleaning liquid in collection container 5, realize the closed loop operation of system, allow reverse osmosis units to move continuously.The advantage of the close loop maneuver of system is effectively to save liquid.For example, for fresh water, for the cumulative volume of the liquid of backwash and draining, be no more than consumed liquid cumulative volume 20%, preferably, be no more than 5%.
When empty container 5, equipment enters the pattern of introducing the water for purifying from external source.
By quality and the demand to the purity of accepted liquid and quality of initial water, determine the specific implementation of equipment.
According to the quality of initial water, the penetrant/enriched material ratio in the repetition rate of the backwash of adjustable hollow fiber filter 3 and reverse osmosis units 4.Can be manually and by using the feedback algorithm of conductivity sensor, luminosity sensor, turbo-power sensor and other sensors, carry out adjusting.
Owing to having removed solvable macromolecule organic matter from coagulation statement of account unit, and the reason of effective ways of first then using the exploitation of air backwash hollow fiber filter with liquid, liquid purification equipment has made to extend the work-ing life of membrane element.
Additional result is, relies on the small size of coagulation statement of account unit 2 and high-speed, may assemble the system of the form of the compact device with the weight of several kilograms and height ratio capacity (every 1.4kg weight of equipment, up to 11/min).
Can in various modification, realize this liquid purification equipment, these modification comprise installs extra cell (after hollow fiber unit and after reverse osmosis units), for example, photocatalysis unit, absorbing unit, ion-exchange unit and by special resin (for example, module and filter cylinder, ultraviolet source and the oxidation unit of antibacterial resin) filling.
According to the situation of device variations, may use filtering membrane and micro-filtration film as hollow fiber filter, and available ultrafilter membrane replace reverse osmosis membrane.Therefore,, not only in decontaminating liquid equipment required for protection, and in comprising the equipment of various filtering units (it must comprise hollow fiber filter), can apply for purifying the method for hollow fiber filter.
Claims (12)
1. a liquid purification equipment, comprising: for supplying the device of liquid to be clean, the hollow fiber filter with liquid backwash, reverse osmosis units, there is the collection container of upper arm and lower branch line and for the discharge equipment of purified liquid,
It is characterized in that, described equipment is provided with
Coagulation statement of account unit, the input terminus of described coagulation statement of account unit is connected to described for supplying the output terminal of the device of liquid to be clean, and the output terminal of described coagulation statement of account unit is connected to the input terminus of described hollow fiber filter,
Vacuum breaker, for during described collection container pumping liquid, atmospheric air being supplied to described collection container, and
Described collection container is arranged to and produces therein vacuum, for supplying atmospheric air and for first then using from the liquid of described collection container supply and the mixture of air and carry out hollow fiber filter described in backwash with liquid.
2. liquid purification equipment according to claim 1, is characterized in that, for atmospheric air being supplied to the described vacuum breaker of described collection container, is arranged on pipeline, and described pipeline is connected to the upper arm of described collection container.
3. liquid purification equipment according to claim 1, is characterized in that, is arranged on the top of described collection container for atmospheric air being supplied to the described vacuum breaker of described collection container.
4. liquid purification equipment according to claim 1, is characterized in that, the upper arm of described collection container in depth extends to the inside of described collection container, and wherein, the lower end of described upper arm is than the high 50mm that is no less than of described lower branch line.
5. liquid purification equipment according to claim 1, is characterized in that, described lower branch line is designed to liquid to be supplied to described reverse osmosis units, and is arranged in generation vacuum in described collection container.
6. liquid purification equipment according to claim 1, is characterized in that, described upper arm is designed to liquid to be supplied to described collection container, so that output liquid the and then mixture of liquid and air is supplied to described hollow fiber filter.
7. a method of cleaning hollow fiber filter, comprise that the liquid of using from collection container supply carries out backwash, it is characterized in that, first with liquid, carry out backwash, and then use from the liquid of described collection container supply and the pressurised mixt of air and carry out backwash, wherein, in described collection container pumping liquid, use vacuum breaker to carry out atmospheric air is supplied to described collection container, wherein, described collection container is arranged to and produces therein vacuum, for supplying atmospheric air and for first then using from the liquid of described collection container supply and the mixture of air and carry out backwash hollow fiber filter with liquid, and utilize coagulation statement of account unit, make liquid flow through electrode system, wherein, the input terminus of described coagulation statement of account unit is connected to for supplying the output terminal of device of liquid to be clean and the input terminus that the output terminal of described coagulation statement of account unit is connected to described hollow fiber filter.
8. the method for cleaning hollow fiber filter according to claim 7, is characterized in that, carries out backwash being less than in time period of 5 seconds.
9. the method for cleaning hollow fiber filter according to claim 7, is characterized in that, carries out backwash being less than in time period of 3 seconds.
10. the method for cleaning hollow fiber filter according to claim 7, is characterized in that, in the starting stage, under the pressure that the air cushion in the top by described collection container produces, with liquid, carries out backwash.
11. in liquid purification equipment according to the use of the method for the cleaning hollow fiber filter described in any one in claim 7 to 10.
12. being used in combination according to the method for cleaning hollow fiber filter described in any one in claim 7 to 10 and the method for decontaminating liquid.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2009106887/15A RU2410336C2 (en) | 2009-02-26 | 2009-02-26 | Apparatus for purifying liquid, method of washing hollow-fibre filter and application of method of washing hollow-fibre filter |
| RU2009106887 | 2009-02-26 | ||
| PCT/RU2009/000593 WO2010098691A1 (en) | 2009-02-26 | 2009-10-30 | Apparatus for the purification of liquid, method for washing a hollow-fibre filter and use of the method for washing a hollow-fibre filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102099302A CN102099302A (en) | 2011-06-15 |
| CN102099302B true CN102099302B (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980127859.6A Expired - Fee Related CN102099302B (en) | 2009-02-26 | 2009-10-30 | Apparatus for the purification of liquid, method for washing a hollow-fibre filter and use of the method for washing a hollow-fibre filter |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102099302B (en) |
| RU (1) | RU2410336C2 (en) |
| WO (1) | WO2010098691A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2446111C1 (en) * | 2010-09-14 | 2012-03-27 | Александр Владимирович Микиртычев | Method of water treatment and membrane unit to this end |
| FR2976819B1 (en) * | 2011-06-24 | 2013-08-02 | Millipore Corp | SYSTEM AND METHOD FOR PURIFYING WATER, WITH AUTOMATIC PURGING |
| CN103130362A (en) | 2011-11-23 | 2013-06-05 | 通用电气公司 | Water treatment device and method |
| KR102076866B1 (en) * | 2011-12-29 | 2020-02-12 | 캡 쓰리 비 브이 | Process for optimising the back flush process in the separation of solid catalyst particles from an inorganic process liquid |
| CN103936181B (en) * | 2014-03-27 | 2015-07-29 | 同济大学 | Manual type purifier |
| RU2589139C2 (en) * | 2014-07-09 | 2016-07-10 | Общество с ограниченной ответственностью "Баромембранная технология" (ООО "БМТ") | Method of cleaning drainage water of solid domestic waste landfills |
| RU2636712C1 (en) * | 2016-12-20 | 2017-11-27 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тверской государственный университет" | Method of chemical cleaning of reverse osmosis filters by solutions of environmentally safe complexes |
| FR3101627B1 (en) * | 2019-10-08 | 2022-01-21 | Natural Water | Liquid purification device |
| RU2759007C1 (en) * | 2020-12-28 | 2021-11-08 | Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Казанский Национальный Исследовательский Технический Университет Им. А.Н. Туполева-Каи", (Книту-Каи) | Combined filter device |
Citations (5)
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| US5584992A (en) * | 1991-01-11 | 1996-12-17 | Sugitomo Akitoshi | Pool water purification system |
| RU2120411C1 (en) * | 1998-01-27 | 1998-10-20 | Общество с ограниченной ответственностью "ЮРТИС" | Method of cleaning oil-containing waste waters |
| US6120688A (en) * | 1997-02-25 | 2000-09-19 | Zenon Environmental, Inc. | Portable reverse osmosis unit for producing drinking water |
| CN1476923A (en) * | 2002-08-20 | 2004-02-25 | 天津膜天膜工程技术有限公司 | Hollow fibre membrane separation equipment and its operation method |
| CN1618506A (en) * | 1999-09-29 | 2005-05-25 | 齐侬环境有限公司 | Ultrafiltration and microfiltration module and system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006066350A1 (en) * | 2004-12-24 | 2006-06-29 | Siemens Water Technologies Corp. | Simple gas scouring method and apparatus |
-
2009
- 2009-02-26 RU RU2009106887/15A patent/RU2410336C2/en not_active IP Right Cessation
- 2009-10-30 CN CN200980127859.6A patent/CN102099302B/en not_active Expired - Fee Related
- 2009-10-30 WO PCT/RU2009/000593 patent/WO2010098691A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5584992A (en) * | 1991-01-11 | 1996-12-17 | Sugitomo Akitoshi | Pool water purification system |
| US6120688A (en) * | 1997-02-25 | 2000-09-19 | Zenon Environmental, Inc. | Portable reverse osmosis unit for producing drinking water |
| RU2120411C1 (en) * | 1998-01-27 | 1998-10-20 | Общество с ограниченной ответственностью "ЮРТИС" | Method of cleaning oil-containing waste waters |
| CN1618506A (en) * | 1999-09-29 | 2005-05-25 | 齐侬环境有限公司 | Ultrafiltration and microfiltration module and system |
| CN1476923A (en) * | 2002-08-20 | 2004-02-25 | 天津膜天膜工程技术有限公司 | Hollow fibre membrane separation equipment and its operation method |
Non-Patent Citations (1)
| Title |
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| JP特表2008-525167A 2008.07.17 |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2410336C2 (en) | 2011-01-27 |
| CN102099302A (en) | 2011-06-15 |
| WO2010098691A1 (en) | 2010-09-02 |
| RU2009106887A (en) | 2010-09-10 |
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