CN203498173U - Back washing energy saving device of reverse osmosis seawater desalination system - Google Patents
Back washing energy saving device of reverse osmosis seawater desalination system Download PDFInfo
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- CN203498173U CN203498173U CN201320416308.5U CN201320416308U CN203498173U CN 203498173 U CN203498173 U CN 203498173U CN 201320416308 U CN201320416308 U CN 201320416308U CN 203498173 U CN203498173 U CN 203498173U
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- pipeline
- reverse osmosis
- activated charcoal
- concentrated water
- discharge pipeline
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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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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to a back washing energy saving device of a reverse osmosis seawater desalination system. The back washing energy saving device comprises a pressure regulating device, an active carbon filter, a multistage filter, a high-pressure pump and a reverse osmosis membrane device which are sequentially connected, wherein a concentrated water outlet formed in one raw water side of the reverse osmosis membrane device is communicated with a concentrated water discharge pipeline; the active carbon filter comprises at least two groups of parallel-connected active carbon filters; the concentrated water discharge pipeline which is close to one end of the concentrated water outlet is connected with a back washing pipeline; the other end of the back washing pipeline is respectively communicated with the output ends of each group of active carbon filters; the input ends of the active carbon filters are communicated with a back washing discharge pipeline; the back washing pipeline and the back washing discharge pipeline are respectively provided with valves. The back washing energy-saving device disclosed by the utility model can be used for recycling discharged concentrated water by sufficiently utilizing the concentrated water with certain pressure, omits the washing pump and the usage of freshwater, saves the washing cost and realizes the energy conservation.
Description
Technical field
The utility model relates to reverse osmosis seawater desalination system, and the strainer that refers in particular to reverse osmosis seawater desalination system carries out back-purge system.
Background technology
Reverse osmosis technology claims again Reverse Osmosis Technology, is a kind ofly to take pressure difference as impellent, isolates the membrane separation technique of solvent from solution.Feed liquid to film one side is exerted pressure, and when pressure surpasses its osmotic pressure, solvent can be made inverse osmosis against the direction of naturally osmotic.Thereby the solvent that obtains seeing through in the low-tension side of film, i.e. penetrating fluid; High-tension side obtains concentrated solution, i.e. concentrated solution.If use reverse-osmosis treated seawater, in the low-tension side of film, obtain fresh water, in high-tension side, obtain dense water.
In traditional reverse osmosis seawater desalination system, comprise that supercharging carries out activated charcoal filter filtration, then carry out deep bed filter filtration, carry out again one-level, secondary multistage filter cascade filtration, former water is carried out to supercharging by topping-up pump after multistage filter filters after, carry out reverse osmosis membrane and carry out reverse osmosis, the fresh water of reverse osmosis is delivered to drinking water pipeline or stores after mineralising tank mineralising; The dense water of reverse osmosis pleurodiaphragmatic in terspace water one side enters concentrated water discharge pipeline after the step-down of dense water water outlet, then through concentrated water discharge discharge of pipes sea.In current reverse osmosis seawater desalination system, final dense water is directly to discharge go back to sea, and is not reused, and has caused a lot of wastes.
Owing to having used the multistage filters such as activated charcoal filter and other pocket types in reverse osmosis seawater desalination system, strainer filters for some time, on its filtering surface, can accumulate some a large amount of impurity particles, affects former water and passes through and filter effect.Because the multistage filter costs such as pocket type are low, replacing aspect, can regularly replace according to pressure reduction etc.But activated charcoal filter needs to carry out backsurging operation, and the back flushinges such as impurity particle on its filtering surface are gone out to activated charcoal filter, make the activated charcoal filter can Reusability.At present, when carrying out activated charcoal filter back flushing, by flushing pump, the fresh water of processing is exerted pressure activated charcoal filter is carried out to back flushing, it has increased flushing pump, and it utilizes the fresh water of processing to rinse, and has caused very large waste.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of back flushing energy saver of reverse osmosis seawater desalting, and it carries out back flushing without flushing pump and fresh water, utilizes dense water to carry out back flushing, has realized the back flushing of activated charcoal filter.Saved the cost of back flushing, the dense water also making has obtained recycling, has saved electric energy and Freshwater resources.
The technical solution of the utility model is the back flushing energy saver of reverse osmosis seawater desalination system, comprise the regulator being communicated with former water, described regulator is communicated with the input terminus of activated charcoal filter, the output terminal of described activated charcoal filter is communicated with the input terminus of described multistage filter, one high-pressure pump is communicated with the output terminal of described multistage filter with the input terminus of reverse osmosis membrane apparatus, at the dense water water outlet of former water one side of reverse osmosis membrane apparatus, be communicated with concentrated water discharge device; Described activated charcoal filter comprises the activated charcoal filter of at least two group parallel connections; It is characterized in that being connected with back flushing pipeline on the described concentrated water discharge pipeline near described dense water water outlet one end, the other end of described back flushing pipeline is communicated with respectively with the output terminal of described every group of activated charcoal filter, at the input terminus pipeline communication of described activated charcoal filter, has back flush discharge pipeline; On the back flushing pipeline of the output terminal of described every group of activated charcoal filter, valve is set, on described back flush discharge pipeline, be provided with valve, one end at described back flushing pipeline and described concentrated water discharge pipeline communication is provided with valve, on the input terminus of described every group of activated charcoal filter and output terminal, is respectively arranged with valve.
The back flush discharge pipeline of described every group of activated charcoal filter is respectively at concentrated water discharge pipeline communication.
On described concentrated water discharge pipeline, reducing valve is installed, described back flushing pipeline and the concentrated water discharge pipeline communication that is positioned at described reducing valve output terminal one side.
The back flushing energy saver of reverse osmosis seawater desalination system of the present utility model, by increasing back flushing pipeline, it is drained to the output terminal of activated charcoal filter by the high-pressure thick water of dense water water outlet through back flushing pipeline, utilize high-pressure thick water to carry out back flushing to activated charcoal filter, and the dense water after rinsing is confluxed to concentrated water discharge pipeline through back flush discharge pipeline again, be disposed to simultaneously sea.It takes full advantage of sea water desaltination and processes the high-pressure thick water producing, and does not need to use flushing pump and fresh water just can realize back flushing.Realized the reduction of energy-conservation and production cost.Owing at least adopting the activated charcoal filter of two groups of parallel connections, to wherein one group while carrying out back flushing, another group activated charcoal filter can carry out normal filtration operation, can not affect the normal work of seawater desalination system.After back flushing end-of-job, back flushing pipeline is closed, make dense water directly through concentrated water discharge discharge of pipes.
Accompanying drawing explanation
Fig. 1, the theory structure schematic diagram of the utility model reverse osmosis seawater desalination system.
Embodiment
Reverse osmosis seawater desalination system of the present utility model, seawater passes through primary filter, filter out the coarse particles of seawater, then by pressure regulator valve, undertaken carrying out cascade filtration after pressure adjusting, then desalination by reverse osmosis is carried out in supercharging, dense water in reverse osmosis pleurodiaphragmatic in terspace water one side is put back to sea through concentrated water discharge row of conduits, and the fresh water of reverse osmosis membrane opposite side carries out fresh water mineralising through mineralising tank, enters drinking water pipeline after increasing useful ion.Referring to Fig. 1.
Former water (seawater has passed through primary filter) is adjusted pressure through reducing valve, makes the pressure of the former water through primary filter that comes from sea pump be adjusted into minimal pressure value, and then topping-up pump increases pressure to reverse osmosis system and moves required pressure.In this enforcement, former water has been done to twice transformation and regulated, guaranteed that the former water of supply of making light system keeps reverse osmosis system pressure independently stable in the situation that ambient pressure is unsteady.
First former water after pressure regulation enter activated charcoal filter 10, carries out the first step filtration, mainly filters the larger particles material that may exist in former water, as silt, and organism etc.In the present embodiment, activated charcoal filter is that three groups of activated charcoal filters are in parallel, on the input terminus pipeline of every group of activated charcoal filter, is provided with valve.When one group of needs wherein overhaul or during back flushing, close the valve on its input terminus pipeline, allow other two groups to carry out normal filtration work.The output terminal of activated charcoal filter is communicated with deep bed filter by pipeline.
Seawater after activated carbon filtration, enters deep bed filter 20.Deep bed filter 20 is comprised of 2 filter tanks in parallel.In this strainer, oarse-grained impurity can further be removed.Because deep bed filter pollutant holding capability is large, only need pressure reduction or regularly change.
The seawater filtering through deep bed filter, can flow into grade one filter, i.e. wound form strainer, and in this strainer, the impurity particle that is greater than 1 μ in seawater all can be blocked.The seawater filtering enters and enters secondary filter again, i.e. folder filter, and a level strainer can be tackled the impurity particle that is greater than 0.5 μ in seawater.By after former water primary filter, filter through activated charcoal filter and the multistage filter that is comprised of deep bed filter, grade one filter, secondary filter, the impurity particle that is greater than 0.5 μ in seawater is nearly all filtered again.
Seawater through this cascade filtration, by high-pressure pump supercharging again, enters reverse osmosis membrane apparatus 30.Reverse osmosis membrane apparatus main body forms with the semi-permeable membranes in putamina by bearing the putamina of high pressure.In the situation that reverse osmosis unit is pressurizeed, can make the water molecules in seawater wherein partly see through semi-permeable membranes, form fresh water.The remaining concentration of seawater that does not see through reverse osmosis unit increases, and forms dense water, via concentrated water discharge device discharge sea.Fresh water can enter mineralising tank by fresh water pipeline and process, and for fresh water increases mineral substance, further promotes the quality of tap water, has mainly added medical stone in mineralising tank.Medical stone is a kind of harmless and have certain bioactive composite minerals to biological nontoxic, it contains for the required various trace elements of HUMAN HEALTH, people's long-term drinking medical stone mineral water, can supplement needed by human body mineral substance and various trace elements, for organism provides inorganic nutrients composition, regulate metabolism.Fresh water through mineralising tank mineralising, by the continuous detecting of in-line meter, in the situation that guaranteeing water quality, will flow to water terminal continuously.Last finished product fresh water, its degree of cleaning, meet the national standard of tap water, also have the multiple mineral substance useful to human body.
The dense water water outlet that is positioned at reverse osmosis pleurodiaphragmatic in terspace water one side is communicated with concentrated water discharge pipeline 40, and the exhaust outlet of concentrated water discharge pipeline 40 is positioned at sea place, by concentrated water discharge to sea.Because the pressure at dense water is generally at 40～80kg/cm
2between, therefore, on the concentrated water discharge pipeline that is positioned at dense water water outlet one end, be provided with regulator, this regulator can be that reducing valve can be also other devices that can regulate pressure, such as flexible pipe, adopt in the present embodiment high pressure hose, high pressure hose is between concentrated water discharge pipeline and dense water water outlet.By thering is the flexible pipe of certain length, the pressure of the high-pressure thick water of dense water water outlet is adjusted to suitable pressure by concentrated water discharge discharge of pipes sea.Also can replace high pressure hose with reducing valve, realize the effect that regulates pressure.
Output terminal at high pressure hose is communicated with back flushing pipeline 50, the other end of back flushing pipeline is communicated with the output terminal of activated charcoal filter respectively, on the back flushing pipeline being communicated with the output terminal of every group of activated charcoal filter, be respectively arranged with valve 51, by valve 51, control back flushing pipeline for the opening and closing of the flushing of every group of activated charcoal filter.On the pipeline at output of every group of activated charcoal filter, be provided with valve 71.Input terminus pipeline at every group of activated charcoal filter is connected with respectively back flush discharge pipeline 60, this back flush discharge pipeline 60 and concentrated water discharge pipeline communication, by the dense water with impurity after back flushing through concentrated water discharge discharge of pipes to sea.Back flush discharge pipeline near with the coupling end of every group of activated charcoal filter on, be provided with valve 61.Front end at the input terminus pipeline of every group of activated charcoal filter is respectively arranged with valve 31.When activated charcoal filter is normally worked, this valve 51, valve 61, valve 71 and the former water of valve 31 assurance can not shunted and enter back flushing pipeline and back flush discharge pipeline.On concentrated water discharge pipeline, be provided with valve 41, when carrying out back flushing, valve-off 41, and valve 31, the valve 71 corresponding with the activated charcoal filter that needs backwash.Dense water enters back flushing pipeline and carries out back flushing, after back flushing finishes, closes valve 51, valve 61 on back flushing pipeline, opens valve 41 on concentrated water discharge pipeline and valve 31, the valve 71 of raw water tubes, and dense water is through concentrated water discharge discharge of pipes.
The utility model, by increasing back flushing pipeline, takes full advantage of the dense water with certain pressure, and the dense water emitting is reused, and has saved flushing pump, and the consumption of fresh water, saved developing cost, realized energy-conservation.
Claims (3)
1. the back flushing energy saver of reverse osmosis seawater desalination system, comprise the regulator being communicated with former water, described regulator is communicated with the input terminus of activated charcoal filter, the output terminal of described activated charcoal filter is communicated with the input terminus of described multistage filter, one high-pressure pump is communicated with the output terminal of described multistage filter with the input terminus of reverse osmosis membrane apparatus, at dense water water outlet and the concentrated water discharge pipeline communication of former water one side of reverse osmosis membrane apparatus; Described activated charcoal filter comprises the activated charcoal filter of at least two group parallel connections; It is characterized in that being connected with back flushing pipeline on the described concentrated water discharge pipeline near described dense water water outlet one end, the other end of described back flushing pipeline is communicated with respectively with the output terminal of described every group of activated charcoal filter, at the input terminus of described activated charcoal filter, is communicated with back flush discharge pipeline; On the back flushing pipeline of the output terminal of described every group of activated charcoal filter, valve is set, on described back flush discharge pipeline, be provided with valve, one end at described back flushing pipeline and described concentrated water discharge pipeline communication is provided with valve, on the input terminus of described every group of activated charcoal filter and output terminal, is respectively arranged with valve.
2. the back flushing energy saver of reverse osmosis seawater desalination system according to claim 1, the back flush discharge pipeline that it is characterized in that described every group of activated charcoal filter respectively with concentrated water discharge pipeline communication.
3. the back flushing energy saver of reverse osmosis seawater desalination system according to claim 1, is characterized in that, on described concentrated water discharge pipeline, reducing valve is installed, described back flushing pipeline and the concentrated water discharge pipeline communication that is positioned at described reducing valve output terminal one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416308.5U CN203498173U (en) | 2013-07-15 | 2013-07-15 | Back washing energy saving device of reverse osmosis seawater desalination system |
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| CN201320416308.5U CN203498173U (en) | 2013-07-15 | 2013-07-15 | Back washing energy saving device of reverse osmosis seawater desalination system |
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| CN203498173U true CN203498173U (en) | 2014-03-26 |
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| CN201320416308.5U Expired - Lifetime CN203498173U (en) | 2013-07-15 | 2013-07-15 | Back washing energy saving device of reverse osmosis seawater desalination system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108191091A (en) * | 2017-12-14 | 2018-06-22 | 深圳创能海洋科技有限公司 | A kind of energy-saving back-flushing filtering system |
| CN113321342A (en) * | 2021-06-17 | 2021-08-31 | 江苏鼎旭节能建材科技有限公司 | Waste water recycling device in rock wool production |
-
2013
- 2013-07-15 CN CN201320416308.5U patent/CN203498173U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108191091A (en) * | 2017-12-14 | 2018-06-22 | 深圳创能海洋科技有限公司 | A kind of energy-saving back-flushing filtering system |
| CN113321342A (en) * | 2021-06-17 | 2021-08-31 | 江苏鼎旭节能建材科技有限公司 | Waste water recycling device in rock wool production |
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Granted publication date: 20140326 |