CN1443713A - Negative pressure back-flushing equipment for pretreatment of seawater desalination and its back-flushing method - Google Patents
Negative pressure back-flushing equipment for pretreatment of seawater desalination and its back-flushing method Download PDFInfo
- Publication number
- CN1443713A CN1443713A CN02145187A CN02145187A CN1443713A CN 1443713 A CN1443713 A CN 1443713A CN 02145187 A CN02145187 A CN 02145187A CN 02145187 A CN02145187 A CN 02145187A CN 1443713 A CN1443713 A CN 1443713A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- valve
- flushing
- super
- medium filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a negative pressure bakcflushing equipment for seawater desalination pretreatment in the seawater desalination equipment field and its backflushing method. Its design is characterized by that on the pipeline of upper portion of multimedia filter a bloow-down valve is connected, and two non-relurn valve are connected on the pipeline of its middle portion, and a throttling valve is connected on the pipeline of its lower portion, and the above-mentioned all the valves are connected with a container whose outlet is connected with an air filter, and the pipeline connected with the lower portion of the multimedia filter is communicated with a super-filter whose front end is equipped with a jetter and a high-pressure pump which are connected with pipeline.
Description
Affiliated technical field
The present invention relates to the sea water desalting equipment field.
Background technology
At present, one of the key part of known sea water desalting equipment membrane module, because of being subjected to the influence of different flushing pressures, different waters seawater quality quality aspects factor, cause the membrane module maintenance rate higher, directly influence the effluent quality and the aquifer yield of membrane module work-ing life and qualified fresh water.
Summary of the invention
The objective of the invention is, provide a kind of sea water desaltination pretreated negative pressure back-purge system, be subjected to the influence of unfavorable factor, cause the problem that work-ing life is on the low side, maintenance workload is bigger to solve membrane module to this area.Design is that membrane module water outlet place and high-pressure pump stop the recoil hydraulic pressure of moment and come the surface contaminants of flushing membrane assembly when utilizing the sea water desaltination pre-treatment, and the pressure difference between using this moment opens the check valve of rated pressure automatically, carries out step blowdown.Now in conjunction with the accompanying drawings, its feature is described as follows: pretreated negative pressure back-purge system of a kind of sea water desaltination and back-flushing method, this device comprises primer pump, pipeline, check valve, more medium filter, wash water valve, super strainer, integrator, membrane module, high-pressure pump, throttling valve, ejector etc., seawater introduces by the road 2 through primer pump 1, check valve 3 enters more medium filter 4, it is characterized in that on the pipeline on more medium filter 4 tops, being connected with wash water valve 5, on the pipeline at middle part, be connected with two check valves, on the pipeline of its underpart, be connected with throttling valve 14, these three valves all are connected with container 15, be connected with air filter 16 in outlet of container portion, the pipeline that connects in the bottom of more medium filter communicates with super strainer 6, the place ahead of super strainer is provided with ejector 12 and high-pressure pump 10, is connected by pipeline.
The method of the passive back flushing of negative pressure is that high-pressure pump 10 is out of service, and the pressure of moment forms one recoil backflow power in its pipeline, washes super strainer 6 and more medium filter 4, and the dirt in these two kinds of strainers is discharged through check valve 7 and wash water valve 5 respectively.
This pretreated internal kinetic energy of sea water desaltination that utilizes had both reached the purpose of membrane module decontamination, saved the energy again, and the device compact in design, and was easy to implement, and certain application value is arranged.
Description of drawings
Fig. 1 is a topology layout synoptic diagram of the present invention.
Sequence number among the figure and title: 1, primer pump, 2, pipeline, 3, check valve, 4, more medium filter, 5, wash water valve, 6, super strainer, 7, check valve, 8, integrator, 9, membrane module, 10, high-pressure pump, 11, throttling valve, 12, ejector, 13, pressure regulator valve, 14, throttling valve, 15, container, 16, air filter.
Embodiment
Is example with seawater in the whole process of this negative pressure back-purge system.Primer pump starts, and seawater is transported to check valve 3 by the road, enters more medium filter 4.Seawater is handled by more medium filter, enters next technical process from the water outlet of bottom and handles, and enters in the container 15 by throttling valve 14 simultaneously, through certain integral action, the pressure in the container and water outlet pressure equilibrium.When device command high-pressure pump 10 is out of service, last terminal pressure in super strainer 6, the more medium filter 4 is decompression immediately, and water outlet pressure, container inner pressure moment is constant and traffic direction is changed, cause the multimedium upper end pressure superposition of more medium filter, dirt flows into container 15 with the throttling valve of more medium filter bottom, enter two check valves on the top of more medium filter again, finally drain into the device outside through wash water valve 5.Enter super strainer 6, ejector 12 through the effusive seawater in more medium filter bottom, input to integrator 8 through high-pressure pump 10, enter membrane module 9 again, the most qualified domestic fresh water is delivered to the user.Discharged through check valve 7 by the seawater that discharge at super strainer 6 tops, the defective fresh water of discharging through membrane module 9 bottoms is discharged through throttling valve 11, and the dense water of discharging through ejector 12 converges to pipeline discharges through throttling valve 11.The sea water desaltination pre-treatment of a new round is again to finish in the former process of high-pressure pump 10, and following one flow process of going round and beginning again.Not to the utmost the seawater resources to get are for the people of island, the ship of going out improve qualified domestic fresh water.
Claims (2)
1. passive back-purge system of the pretreated negative pressure of sea water desaltination and back-flushing method, this device comprises primer pump, pipeline, check valve, more medium filter, wash water valve, super strainer, integrator, membrane module, high-pressure pump, throttling valve, ejector etc., seawater is introduced (2) by the road through primer pump (1), check valve (3) enters more medium filter (4), it is characterized in that on the pipeline on more medium filter (4) top, being connected with wash water valve (5), on the pipeline at middle part, be connected with two check valves, on the pipeline of its underpart, be connected with throttling valve (14), these three valves all are connected with container (15), be connected with air filter (16) in outlet of container portion, the pipeline that connects in the bottom of more medium filter communicates with super strainer (6), the place ahead of super strainer is provided with ejector (12) and high-pressure pump (10), is connected by pipeline.
2. passive back-purge system of the pretreated negative pressure of sea water desaltination according to claim 1 and back-flushing method, the method that it is characterized in that the passive back flushing of negative pressure is that high-pressure pump (10) is out of service, the pressure of moment forms one recoil backflow power in its pipeline, wash super strainer (6) and more medium filter (4), the dirt in these two kinds of strainers is discharged through check valve (7) and wash water valve (5) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02145187A CN1443713A (en) | 2002-11-08 | 2002-11-08 | Negative pressure back-flushing equipment for pretreatment of seawater desalination and its back-flushing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02145187A CN1443713A (en) | 2002-11-08 | 2002-11-08 | Negative pressure back-flushing equipment for pretreatment of seawater desalination and its back-flushing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1443713A true CN1443713A (en) | 2003-09-24 |
Family
ID=27811343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02145187A Pending CN1443713A (en) | 2002-11-08 | 2002-11-08 | Negative pressure back-flushing equipment for pretreatment of seawater desalination and its back-flushing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1443713A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009062364A1 (en) * | 2007-11-13 | 2009-05-22 | Xiaohua Xu | A seawater desalination system using cavitating jet technique |
| CN102234139A (en) * | 2010-04-29 | 2011-11-09 | 冯先凯 | Single-pump backflushing negative pressure fluid process equipment |
-
2002
- 2002-11-08 CN CN02145187A patent/CN1443713A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009062364A1 (en) * | 2007-11-13 | 2009-05-22 | Xiaohua Xu | A seawater desalination system using cavitating jet technique |
| CN102234139A (en) * | 2010-04-29 | 2011-11-09 | 冯先凯 | Single-pump backflushing negative pressure fluid process equipment |
| CN102234139B (en) * | 2010-04-29 | 2013-03-13 | 冯先凯 | Single-pump backflushing negative pressure fluid process equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9550150B2 (en) | Water purification system | |
| US20070256977A1 (en) | Reverse osmosis water filtering system | |
| WO2021047417A1 (en) | Pressure energy composite desalination process | |
| US7662290B2 (en) | Integrated water decontamination plant and well pump arrangement | |
| CN201161955Y (en) | Mobile sea water desalting apparatus | |
| CN1443713A (en) | Negative pressure back-flushing equipment for pretreatment of seawater desalination and its back-flushing method | |
| CN2578311Y (en) | Negative backwash device for desalination pretreatment | |
| CN210528597U (en) | Intelligent wastewater recycling water purifier | |
| CN207243593U (en) | Water purifier | |
| CN106315767A (en) | Water purifier with function of reducing TDS (Total Dissolved Solids) value of re-yielded water | |
| US20090045127A1 (en) | Aircraft Rinse System | |
| CN211570291U (en) | Ceramic membrane second-stage reverse osmosis advanced treatment system | |
| CN205241382U (en) | Water saving fixtures of purifier | |
| CN206562358U (en) | Filter water system | |
| CN211595249U (en) | Water treatment reclaimed water recycling equipment | |
| CN205241384U (en) | Water purifying machine without waste water | |
| CN215975087U (en) | Raw water treatment system | |
| CN203159355U (en) | Pump-free energy-saving water purification system | |
| KR102624748B1 (en) | Energy recovery and reuse RO system using concentrated water pressure in RO process | |
| CN220143044U (en) | Reclaimed water recycling filter device | |
| CN211367057U (en) | Water purification system | |
| CN216837416U (en) | Integrated equipment is got rid of to heavy metal | |
| CN109704476B (en) | Long-acting core water purifier and control method | |
| CN220245814U (en) | Reverse osmosis water generator provided with cyclone sand remover | |
| CN218784737U (en) | Ultrahigh-pressure reverse osmosis energy-saving system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |