CN100387327C - Energy-saving reverse osmosis treatment system - Google Patents
Energy-saving reverse osmosis treatment system Download PDFInfo
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- CN100387327C CN100387327C CNB2005100501167A CN200510050116A CN100387327C CN 100387327 C CN100387327 C CN 100387327C CN B2005100501167 A CNB2005100501167 A CN B2005100501167A CN 200510050116 A CN200510050116 A CN 200510050116A CN 100387327 C CN100387327 C CN 100387327C
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- reverse osmosis
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- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000003672 processing method Methods 0.000 claims description 15
- 238000010612 desalination reaction Methods 0.000 claims description 9
- 239000013505 freshwater Substances 0.000 claims description 6
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 210000005241 right ventricle Anatomy 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000011033 desalting Methods 0.000 description 5
- 239000013535 sea water Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Abstract
The present invention discloses an energy saving reverse osmosis treatment system. The present invention utilizes high pressure operation conditions owned by the reverse osmosis treatment system to sufficiently recover and utilize the energy of excess pressure of reverse osmosis concentrated water under the condition of high pressure. The purposes that energy is saved, and the efficiency is improved are obtained. The present invention utilizes the hydraulic principle to lead two identical hydraulic devices to be connected, which forms an energy recovery device. In different hydraulic cylinders, the pressure of reverse osmosis concentrated water is respectively utilized as driving force, and the conveying process of feed liquid is completed. Simultaneously, the energy of the excess pressure of the reverse osmosis concentrated water with high pressure is recovered. The present invention has the advantages that compared with a traditional reverse osmosis system, equipment investment is saved, the energy consumption is greatly decreased, and the operation is convenient and simple. The present invention can be widely applied to various occasions which apply reverse osmosis systems.
Description
Technical field
The present invention relates to a kind of processing method of counter-infiltration, refer in particular to a kind of reverse osmosis treatent method with energy recycle device.
Background technology
21 century will be the century of water.China is a water resource big country, also is one of country of lack of water the most simultaneously.Predict according to " 21 century sustainable development of China water resource strategic research report " that the Chinese Academy of Engineering proposes in July, 2000: by 2010, China's water requirement 7300 billion cubic meters, available water were 6200～6300 billion cubic meters, and water deficit is 1000 billion cubic meters.
The processing of the bitter of desalinization and high salinity is an important channel that solves China coastal cities and island shortage of water resources, increases the freshwater resources total amount.Since first reverse osmosis seawater desalting engineering of China in 1997-Sheng mountain 500 ton per day reverse osmosis seawater desalting engineerings are constructed and put into operation, added up to water-yielding capacity to surpass 40000 ton per days.But the consumption of energy is a urgent problem in the highrank fuel salinity water processing procedure of China at present, and in processing procedure, the consumption of energy is big, and the cost height is one of present ubiquitous problem of China.
Energy recycle device is as one of key equipment of reverse osmosis desalination device, and is most important to the cost that reduces reverse osmosis seawater desalting construction investment, energy consumption and desalination water.A plurality of reverse osmosis seawater desalting demonstration projects that China recent years is set up just make the ton water consumption of desalination by reverse osmosis water can drop to about 4 degree just because of having used high efficiency positive displacement formula energy recycle device.But fully from U.S.'s import, price is very expensive for energy recycle device (mainly being the PX type), accounts for the about 15-20% of equipment gross investment.Therefore, energy recovery technology and device that research and development has China's independent intellectual property right are for accelerating reverse osmosis seawater desalting home-made equipment process, promoting that applying of desalination technology is significant.
Summary of the invention
The present invention is directed to the high flow rate of energy in the prior art, proposed a kind of in high salinity, desalinization processing procedure energy-conservation method of operating, this is achieved by following step:
A kind of energy-saving reverse osmosis processing method is characterized in that this method follows these steps to carry out successively:
1. pump into energy recycle device 5 by water pump 1 through check-valves 2 through pretreated former water, this moment, check-valves 7 cut out, and piston rod is toward right motion;
2. the water that comes out from energy recycle device 5 enters reverse osmosis unit 10 through check-valves 8, and this moment, check-valves 3 cut out;
3. the moisture that comes out from reverse osmosis unit 10 becomes two strands, and one desalination water enters the fresh water water supply installation, and another strand band presses useless dense water to enter four-way duty valve 9;
4. the band that comes out from four-way duty valve 9 presses dense water to be entered a hydraulic cylinder 12 left indoor of energy recycle device 5 by the port 6 of energy recycle device 5, and the useless dense water in another hydraulic cylinder 11 right ventricles is flowed out by port 4, through 9 dischargings of four-way duty valve;
When piston rod movement to the low order end of hydraulic cylinder or after near low order end, switch its conducting states by four-way duty valve 9, the piston direction motion that begins to turn left, this moment, former water pumped into energy recycle device 5 by water pump 1 through check-valves 7, and check-valves 2 cuts out;
6. the water that comes out from energy recycle device 5 enters reverse osmosis unit 10 through check-valves 3, and check-valves 8 cuts out;
7. the moisture that comes out from reverse osmosis unit 10 becomes two strands, and one desalination water enters retracting device, and another strand band presses useless dense water to enter the four-way duty valve 9 that switches through state;
8. the band that comes out from four-way duty valve 9 presses dense water to be entered by the port 4 of energy recycle device 5 in the right ventricle of hydraulic cylinder 11 of energy recycle device 5, and the indoor useless dense water in another hydraulic cylinder 12 left sides are flowed out by port 6, discharge through four-way duty valve 9;
Above-mentioned a kind of energy-saving reverse osmosis processing method, described energy recycle device is made up of the butt joint of the piston rod of two hydraulic cylinders, is docked by the fluid pressure type cylinder of two equal-wattages, model to form.
Above-mentioned a kind of energy-saving reverse osmosis processing method, the total dissolved solidss in the described former water are that 50ppm～100000ppm, temperature are 1～45 ℃.
Above-mentioned a kind of energy-saving reverse osmosis processing method, the operating pressure of described high-pressure pump 1 is 0.4～10.0Mpa.
Above-mentioned a kind of energy-saving reverse osmosis processing method, described four-way duty valve 9 are two-position four-way valve or four the reversal valve groups that valve is formed by four interfaces.
According to the difference of working stage, the duty of valve is also made corresponding adjustment to above-mentioned four-way duty valve 9 at any time in the whole operation process, coordinates the effect of continuous operation to reach entire method.
The invention has the beneficial effects as follows: under the identical operations condition, adopt this method to carry out the counter-infiltration project and handle, can save equipment investment and improve energy utilization efficiency greatly, energy savings reaches energy-conservation effect; And it is simple, convenient.
Description of drawings
The flow chart of Fig. 1 energy-saving reverse osmosis processing method
Each stage flow operations schematic diagram of Fig. 2 Fig. 3 Fig. 4 energy-saving reverse osmosis processing method
1. useless dense water port 7. check-valves 8. check-valves 9. four-way duty valves 10. reverse osmosis units 11. hydraulic cylinders 12. hydraulic cylinders of useless dense water port 5. energy recycle devices 6. energy recycle devices of water pump 2. check-valves 3. check-valves 4. energy recycle devices
A original water inlet B band presses the useless concentrated water discharge mouth E of concentrate recirculation mouth C band setting-out outlet D to produce water out
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further statement, specifically implement the present invention.
According to flow process process shown in Figure 1, at first start power supply, open water pump 1, with former water input energy recycle device 5, energy recycle device 5 has two hydraulic cylinders, be shown as 11 or 12 in Fig. 2, the former water of high pressure enters reverse osmosis unit 10 through two outlets of energy recycle device 5 through check-valves 3 or 8 again.Subsequently, desalination water comes out to enter the fresh water water supply installation from device; Band presses dense water to enter four-way duty valve 9, behind four-way duty valve 9, enter one of them hydraulic cylinder 11 of energy recycle device 5 again, useless dense water is back to the four-way duty valve 9 from the outlet of another hydraulic cylinder 12 again, at last, discharge with the form of low-pressure water from four-way duty valve 9.
In the entire method operating process, can divide and make following several stages:
The one, as shown in Figure 2, in whole legend, energy recycle device comprises that 11,12, four check-valves of two hydraulic cylinders are identical with Fig. 12,3,7,8, form with a four-way duty valve 9, it has four external interface A, B, C, D, and wherein A is a raw water inlet, and D is useless concentrated water discharge mouth, B, C two mouth pressures are equal substantially, flow does not wait, and B presses the concentrate recirculation mouth for band, and C is the outlet of band setting-out.Method utilizes hydraulic principle to carry out work, and when four-way duty valve 9 left sides were logical, because of the check-valves that B, C two mouth pressures equate substantially and are provided with, its principle can be reduced to as Fig. 3.
The 2nd, as shown in Figure 3; B ", E ', C, B, B ' pressure equates, the emptying of D mouth, when the liquid of certain pressure flow when the A mouth enters, the piston and the piston rod of two hydraulic cylinders 11,12 can be moved to the left, at this moment to multiply by piston cross-section long-pending divided by the piston rod sectional area for the pressure of the E ' pressure that equals A ', E ' flow equals the E flow, it is long-pending divided by piston cross-section that the flow that E ' flow equals A multiply by the piston rod sectional area, and promptly piston and piston rod area ratio have determined whole hydraulic means pressure, discharge relation; When piston moves to high order end or during near high order end, four-way duty valve 9 is right logical, and same, because of the check-valves that B, C two mouth pressures equate substantially and are provided with, its principle can be reduced to as Fig. 4.
The 3rd, as shown in Figure 4; B ", E ', C, B, B ' pressure equates, the emptying of D mouth, when the liquid of certain pressure flow when the A mouth enters, the piston and the piston rod of two hydraulic cylinders 11,12 can move right, equally, at this moment to multiply by piston cross-section long-pending divided by the piston rod sectional area for the pressure of the E ' pressure that equals A ', E ' flow equals the E flow, it is long-pending divided by piston cross-section that the flow that E ' flow equals A multiply by the piston rod sectional area, and promptly piston and piston rod sectional area ratio have determined whole hydraulic means pressure, discharge relation.So two-cylinder piston, piston rod move in circles mobile back and forth, thereby realize that it is the water outlet C of same flow that continuous certain flow water inlet A boosts, its force value is decided by the piston and the piston rod sectional area ratio of hydraulic means, realizes the continuous recovery of the energy of the dense water B of band pressure simultaneously.
The 4th, as shown in Figure 1, application in counter-infiltration, E is a reverse osmosis produced water, the water inlet of reverse osmosis unit 10 connects the A mouth of energy recycle device 5, the useless dense water of reverse osmosis unit 10 connects the B mouth of energy recycle device 5, the C mouth of energy recycle device 5 connects the water inlet of reverse osmosis unit 10, and to press the energy of dense water B will install that water inlet A boosts be the water outlet C of flow equally to energy recycle device 5 by reclaiming band, and its force value is decided by the piston and the piston rod sectional area ratio of hydraulic means certainly; When piston and piston rod to or during near the top, by the switching of four-way duty valve 9, can realize the reciprocating motion of piston and piston rod, make each current continuous.
Below with regard to as follows for the contrast foundation under the routine operation condition with the inventive method 1 ton of required electric energy of fresh water of every product under the same operation condition:
| Operating condition (concentration, PH, temperature, operating pressure) | Conventional method | The inventive method |
| 250ppm，7、25℃、1Mpa | 0.6 ± 0.1 degree | 0.5 ± 0.1 degree |
| 100000ppm，7、25℃、15Mpa | 33 ± 3.3 degree | 10 ± 1 degree |
| 500ppm，7、25℃、2Mpa | 0.7 ± 0.1 degree | 0.5 ± 0.1 degree |
| 5000ppm，7、25℃、4Mpa | 6.4 ± 0.1 degree | 3.2 ± 0.1 degree |
| 50000ppm，7、25℃、7.5Mpa | 11.3 ± 0.8 degree | 4.5 ± 0.5 degree |
At last, it is also to be noted that, more than only be some embodiments of the present invention.Obviously, the invention is not restricted to above examples of implementation, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (6)
1. energy-saving reverse osmosis processing method is characterized in that this method follows these steps to carry out successively:
(1) pump into energy recycle device (5) by water pump (1) through check-valves (2) through pretreated former water, check-valves this moment (7) cuts out, and piston rod is toward right motion;
(2) water that comes out from energy recycle device (5) enters reverse osmosis unit (10) through check-valves (8), and check-valves this moment (3) cuts out;
(3) moisture that comes out from reverse osmosis unit (10) becomes two strands, and one desalination water enters the fresh water water supply installation, and another strand band presses dense water to enter four-way duty valve (9);
(4) band that comes out from four-way duty valve (9) presses dense water to be entered a hydraulic cylinder (12) left indoor of energy recycle device (5) by the port (6) of energy recycle device (5), and the useless dense water in another hydraulic cylinder (11) right ventricle is flowed out by port (4), discharges through four-way duty valve (9);
(5) when piston rod movement to the low order end of hydraulic cylinder or after near low order end, switch its conducting state by four-way duty valve (9), piston begin to turn left direction motion, this moment, former water pumped into energy recycle device (5) by water pump (1) through check-valves (7), and check-valves (2) cuts out;
(6) water that comes out from energy recycle device (5) enters reverse osmosis unit (10) through check-valves (3), and check-valves (8) cuts out;
(7) moisture that comes out from reverse osmosis unit (10) becomes two strands, and one desalination water enters the fresh water water supply installation, and another strand band presses dense water to enter the four-way duty valve (9) that has switched through conducting state;
(8) band that comes out from four-way duty valve (9) presses dense water to be entered by the port (4) of energy recycle device (5) in the right ventricle of hydraulic cylinder (11) of energy recycle device (5), and the indoor useless dense water in another hydraulic cylinder (12) left side is flowed out by port (6), discharges through four-way duty valve (9);
2. a kind of energy-saving reverse osmosis processing method according to claim 1 is characterized in that described energy recycle device is made up of two relatively-stationary hydraulic cylinders in position.
3. a kind of energy-saving reverse osmosis processing method according to claim 1 is characterized in that the total dissolved solidss in the described former water are that 250ppm～100000ppm, temperature are 1～45 ℃.
4. a kind of energy-saving reverse osmosis processing method according to claim 1, the operating pressure that it is characterized in that described water pump (1) is 0.4～15Mpa.
5. according to claim 1 or 4 described a kind of energy-saving reverse osmosis processing methods, the operating pressure that it is characterized in that described water pump (1) is 0.4～10.0Mpa.
6. a kind of energy-saving reverse osmosis processing method according to claim 1 is characterized in that described four-way duty valve (9) is two-position four-way valve or four the reversal valve groups that valve is formed by four interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100501167A CN100387327C (en) | 2005-06-17 | 2005-06-17 | Energy-saving reverse osmosis treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100501167A CN100387327C (en) | 2005-06-17 | 2005-06-17 | Energy-saving reverse osmosis treatment system |
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| CN1721047A CN1721047A (en) | 2006-01-18 |
| CN100387327C true CN100387327C (en) | 2008-05-14 |
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| CNB2005100501167A Expired - Fee Related CN100387327C (en) | 2005-06-17 | 2005-06-17 | Energy-saving reverse osmosis treatment system |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456607B (en) * | 2008-11-13 | 2011-06-29 | 杭州水处理技术研究开发中心有限公司 | Water pressure driven switching valve group |
| CN102040261B (en) * | 2010-11-04 | 2012-10-31 | 杭州水处理技术研究开发中心有限公司 | Water-pressure automatic transposition energy recovery device |
| US9644761B2 (en) | 2011-09-30 | 2017-05-09 | General Electric Company | Desalination system with energy recovery and related pumps, valves and controller |
| US9387440B2 (en) | 2011-09-30 | 2016-07-12 | General Electric Company | Desalination system with energy recovery and related pumps, valves and controller |
| US9476415B2 (en) | 2012-12-04 | 2016-10-25 | General Electric Company | System and method for controlling motion profile of pistons |
| US9638179B2 (en) | 2012-12-04 | 2017-05-02 | General Electric Company | Hydraulic control system for a reverse osmosis hydraulic pump |
| US9897080B2 (en) | 2012-12-04 | 2018-02-20 | General Electric Company | Rotary control valve for reverse osmosis feed water pump with energy recovery |
| CN105073228B (en) * | 2013-02-15 | 2018-08-28 | 蓝洋创新有限责任公司 | Integrated ultrafiltration and reverse osmosis desalinization system |
| CN103191642B (en) * | 2013-03-26 | 2015-03-04 | 国家***天津海水淡化与综合利用研究所 | Pressure exchange cylinder and valve-control pressure exchanger for reverse osmosis desalting system |
| CN106438519B (en) * | 2016-09-07 | 2018-05-29 | 上海空间推进研究所 | Lightweight supercharging device containing Energy Recovery Technology |
| CN106630015A (en) * | 2017-01-13 | 2017-05-10 | 四川深蓝环保科技有限公司 | Apparatus for recycling pressure energy of fluid under pressure |
| CN109665595A (en) * | 2017-10-16 | 2019-04-23 | 青岛海尔施特劳斯水设备有限公司 | A kind of adjustable waste water proportional valve and water purifier |
| CN107715695A (en) * | 2017-11-08 | 2018-02-23 | 江门市蓬江区鑫浩源科技有限公司 | A kind of sea water desalinating unit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2461915Y (en) * | 2000-12-29 | 2001-11-28 | 刘博渊 | Reverse osmosis unit with piston type energy recoverer |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2461915Y (en) * | 2000-12-29 | 2001-11-28 | 刘博渊 | Reverse osmosis unit with piston type energy recoverer |
Non-Patent Citations (2)
| Title |
|---|
| 反渗透淡化***余压水力能量回收装置的研究进展. 王世昌.水处理技术，第28卷第2期. 2002 |
| 反渗透淡化***余压水力能量回收装置的研究进展. 王世昌.水处理技术，第28卷第2期. 2002 * |
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Assignee: HANGZHOU (LIGHTED TORCH) XIDOUMEN MEMBRANE Co.,Ltd. Assignor: HANGZHOU WATER TREATMENT TECHNOLOGY DEVELOPMENT CENTER Co.,Ltd. Contract fulfillment period: 2008.8.13 to 2009.8.12 Contract record no.: 2008330000225 Denomination of invention: Energy-saving reverse osmosis treatment system Granted publication date: 20080514 License type: Exclusive license Record date: 20080820 |
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Assignee: HANGZHOU (LIGHTED TORCH) XIDOUMEN MEMBRANE Co.,Ltd. Assignor: HANGZHOU WATER TREATMENT TECHNOLOGY DEVELOPMENT CENTER Co.,Ltd. Contract fulfillment period: 2008.8.10 to 2015.6.16 Contract record no.: 2008330000225 Denomination of invention: Energy-saving reverse osmosis treatment system Granted publication date: 20080514 License type: Exclusive license Record date: 20080820 |
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