CN210915677U - Green environment-friendly seawater desalination system - Google Patents
Green environment-friendly seawater desalination system Download PDFInfo
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- CN210915677U CN210915677U CN201921632333.0U CN201921632333U CN210915677U CN 210915677 U CN210915677 U CN 210915677U CN 201921632333 U CN201921632333 U CN 201921632333U CN 210915677 U CN210915677 U CN 210915677U
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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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Abstract
The utility model discloses an add medicament free, improve sea water desalination efficiency and nontoxic harmless environment-friendly sea water desalination. This environment-friendly seawater desalination system is including the sea water inlet tube, the working shaft that communicate in proper order one, preliminary treatment filter equipment, second grade seawater desalination host computer and the product water tank, seawater desalination system still includes the function water machine, set up electrolysis generator in the function water machine and with the electrolysis pump that adds that electrolysis generator is linked together, electrolysis generator circular telegram electrolysis produces acid water and alkaline water, acid water pass through the acid water delivery pipe with the second grade seawater desalination host computer is connected, alkaline water pass through the buck delivery pipe with the product water tank is connected, the acid water delivery pipe with all be provided with the control valve on the buck delivery pipe. The utility model discloses be applied to sea water desalination's technical field, still can be applied to in the brackish water desalination field and the other project fields of using reverse osmosis system.
Description
Technical Field
The utility model relates to a sea water desalination's technical field, in particular to green type sea water desalination.
Background
The shortage of fresh water resources in China, particularly the coastal areas in the North China is one of the most serious areas with water shortage in China, and the seawater desalination is a necessary trend for solving the water resource shortage of coastal cities in China.
At present, the seawater desalination technology is relatively mature, the PH value of water produced by seawater desalination in the traditional process is lower than the tap water standard, people feel uncomfortable when washing, and the method of adding an alkali tablet or other medicaments into a water tank to adjust the PH value so as to reach the drinking water standard of human bodies is adopted. In addition, in the operation of a seawater desalination system, seawater desalination equipment can influence the water production efficiency due to scaling on a reverse osmosis membrane, at the moment, the machine needs to be stopped and the chemicals need to be added to remove the scaling on the reverse osmosis membrane, the operation influences the production efficiency of seawater and fresh water and increases the manual management intensity of the equipment, and meanwhile, due to the fact that the used chemicals are difficult to transport and store, the normal operation of the seawater desalination equipment is also influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art not enough, provide a use less medicament, improve sea water desalination efficiency and nontoxic harmless green type sea water desalination, further improve the automatic level of sea water desalination simultaneously and to really realizing that sea water desalination unmanned on duty target keeps step forward again.
The utility model adopts the technical proposal that: the utility model discloses a green type sea water desalination, environment-friendly sea water desalination is including the sea water inlet tube, the working shaft that communicate in proper order, preliminary treatment filter equipment, second grade sea water desalination host computer and product water tank, sea water desalination still includes the function water machine, set up in the function water machine electrolysis generator and with the electrolyte pump that adds that electrolysis generator is linked together, electrolysis generator circular telegram electrolysis produces inoxidizability's acid water and alkaline water, acid water pass through the acid water delivery pipe with the second grade sea water desalination host computer is connected, alkaline water pass through the buck delivery pipe with the product water tank is connected, the acid water delivery pipe with all be provided with the control valve on the buck delivery pipe.
Furthermore, the pretreatment filtering device comprises a quartz sand filter and a first precision filter, a water inlet of the quartz sand filter is connected with the first water supply pump, a water outlet of the quartz sand filter is connected with a water inlet of the first precision filter, and a water outlet of the first precision filter is connected with a water inlet of the second-stage seawater desalination host.
Furthermore, the functional water machine comprises a water inlet pipe, a second water supply pump, a filter assembly, a high-pressure pump, a reverse osmosis membrane assembly and the electrolysis generator which are sequentially communicated, wherein the electrolyte adding pump is arranged between the reverse osmosis membrane assembly and the electrolysis generator.
Furthermore, electrolyte solution mainly containing sodium sulfate is filled in the electrolyte adding pump.
Further, the filter assembly comprises a multi-media filter and a precision filter II connected with the multi-media filter, a check valve I is arranged between the water supply pump II and the multi-media filter, a ball valve I and a pressure switch I are arranged between the precision filter II and the high-pressure pump, a ball valve II and a check valve II are arranged between the high-pressure pump and the reverse osmosis membrane assembly, a pressure gauge I, a flow meter, a conductivity meter, a ball valve III and a pressure switch II are sequentially arranged between the reverse osmosis membrane assembly and the self-suction pump, and a ball valve IV and a metering pump are arranged on an alkaline water discharge pipe and an acid water discharge pipe of the electrolysis generator.
Furthermore, a second pressure gauge is arranged at a water production port of the secondary seawater desalination main machine, and a first PH detector is arranged in the water production tank.
Furthermore, the secondary seawater desalination host computer is provided with waste water discharge pipe, be provided with PH detector two on the waste water discharge pipe, be provided with on the buck delivery pipe with the last lateral pipe that communicates of waste water discharge pipe, waste water discharge pipe with all be provided with electric valve on the lateral pipe.
The utility model has the advantages that: because the utility model discloses an environment-friendly sea water desalination system, environment-friendly sea water desalination system includes the sea water inlet tube, the working shaft one, preliminary treatment filter equipment, second grade sea water desalination host computer and the product water tank that communicate in proper order, sea water desalination system still includes the function water machine, set up electrolysis generator in the function water machine and with the electrolyte pump that adds that electrolysis generator is linked together, electrolysis generator circular telegram electrolysis produces acid water and alkaline water, acid water is connected with the second grade sea water desalination host computer through the acid water discharge pipe, alkaline water with produce the water tank and be connected through the buck delivery pipe, the acid water discharge pipe with all be provided with the control valve on the buck delivery pipe, so the utility model discloses an electrolysis contains the solution of sodium sulfate salt in electrolysis generator, the alkaline water of production is directly used for adjusting the pH value in the product water tank, avoided artifical input alkali piece or other additives to adjust the pH value, the produced non-oxidizing acid water of solution that contains sodium sulfate salt through the electrolysis can be used for wasing the membrane scale deposit problem of reverse osmosis membrane on the second grade seawater desalination host computer in addition, avoids traditional shut down to wash the membrane scale deposit, has improved the utility model discloses a work efficiency. And simultaneously, the utility model provides a reverse osmosis membrane's washing waste water still be the problem of acidity or basicity, reverse osmosis membrane's washing waste water when discharging, will detect waste water discharge pipe's pH value, rethread through the acid water or the basicity water of function water machine preparation carry out neutralization treatment to the washing liquid, and the washing liquid of discharging like this will be neutral harmless salt solution.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a process flow diagram of the functional water machine;
fig. 3 is a schematic structural diagram of the functional water machine.
Detailed Description
As shown in fig. 1 to fig. 3, in this embodiment, the present invention includes an environment-friendly seawater desalination system, the environment-friendly seawater desalination system includes a seawater inlet pipe 1, a first water supply pump 2, a pretreatment filter device 3, a second-stage seawater desalination host 4 and a water production tank 5 which are sequentially connected, the second-stage seawater desalination host 4 is a reverse osmosis seawater desalination device, the first water supply pump 2 is used for providing power for seawater, the second-stage seawater desalination host 4 is mainly used for separating salt and producing pure water, the seawater desalination system further includes a functional water machine 6, an electrolysis generator 7 and an electrolyte pump 8 communicated with the electrolysis generator 7 are arranged in the functional water machine 6, an alkaline water discharge pipe 10 is arranged on the anode of the electrolysis generator 7, an acid water discharge pipe 9 is arranged on the cathode of the electrolysis generator 7, the electrolysis generator 7 is electrified to electrolyze and produce acidic water 71 and alkaline water 72, the acidic water 71 is connected with the secondary seawater desalination host machine 4 through an acid water discharge pipe 9, the alkaline water 72 is connected with the water production tank 5 through an alkaline water discharge pipe 10, the acid water discharge pipe 9 and the alkaline water discharge pipe 10 are both provided with control valves, a pressure gauge II is arranged at a water production port of the secondary seawater desalination host machine 4, and a PH detector I is arranged in the water production tank 5.
In this embodiment, the electrolyte pump 8 is filled with an electrolyte solution mainly containing sodium sulfate, and the electrolyte solution mainly containing sodium sulfate can make acidic water generated by electrolysis non-oxidizing, and can be used for cleaning membrane scale of a reverse osmosis membrane on a secondary seawater desalination host, and acidic water generated by electrolysis of ordinary sodium chloride brine cannot clean a membrane element due to strong oxidizing property; therefore, the design only utilizes a common and easily-prepared electrolyte solution to replace various agents required by the operation of the current seawater desalination system and reverse osmosis system: the acidic cleaning agent, the alkaline cleaning agent, the redox agent, the pH regulator and the scale inhibitor not only save a large amount of medicament cost and reduce the operation cost, but also avoid a plurality of road transportation restrictions in the medicaments and ensure the operation of a seawater desalination and reverse osmosis system.
In this embodiment, the pretreatment filter device 3 includes a quartz sand filter 31 and a first precision filter 32, a water inlet of the quartz sand filter 31 is connected to the first water supply pump 2, a water outlet of the quartz sand filter 31 is connected to a water inlet of the first precision filter 32, and a water outlet of the first precision filter 32 is connected to a water inlet of the second-stage seawater desalination main unit 4.
In this embodiment, the functional water machine 6 includes a water inlet pipe 61, a second water supply pump 62, a filter module 63, a high pressure pump 64, a reverse osmosis membrane module 65 and the electrolysis generator 7 which are sequentially communicated, and the electrolyte adding pump 8 is disposed between the reverse osmosis membrane module 65 and the electrolysis generator 7.
In this embodiment, the filter assembly 63 includes a multi-media filter 631 and a second precision filter 632 connected to the multi-media filter 631, the second precision filter 632 includes a 20"PP filter and a 20" activated carbon filter, a first check valve 66 is disposed between the second water supply pump 62 and the multi-media filter 631, a first ball valve 67 and a first pressure switch 68 are disposed between the second precision filter 632 and the high-pressure pump 64, a second ball valve 69 and a second check valve 610 are disposed between the high-pressure pump 64 and the reverse osmosis membrane assembly 65, a first pressure gauge, a first flow meter, a conductivity meter, a third ball valve and a second pressure switch are sequentially disposed between the assembly 65 and the electrolysis generator 7, and a fourth ball valve and a fourth metering pump are disposed on an alkaline water discharge pipe and an acidic water discharge pipe of the electrolysis generator 7.
Further, the secondary seawater desalination main machine 4 is provided with a wastewater discharge pipe, a PH detector II is arranged on the wastewater discharge pipe, a branch pipe communicated with the wastewater discharge pipe is arranged on the alkaline water discharge pipe, electric valves are arranged on the wastewater discharge pipe and the branch pipe,
in this embodiment, the functional water machine is still including wasing case 11, wash the water inlet of case 11 with the filter is connected, it is provided with the delivery port to wash case 11, be provided with three outlet branch pipe on the delivery port, three outlet branch pipe respectively with the water inlet of electrolysis generator 7 with the positive negative pole of electrolysis generator 7 is connected, every outlet branch pipe all is provided with check valve three.
In this embodiment, the environment-friendly seawater desalination process includes the following steps:
a, pumping seawater into a pretreatment filtering device 3 through a first water supply pump 2 for filtering, desalting the filtered seawater in a secondary seawater desalting host 4, and directly discharging the desalted seawater into a product water tank 5;
B. adding an electrolyte pump 8, adding an electrolyte before the secondary desalted water desalted by the reverse osmosis membrane assembly 65 enters the electrolytic generator 7 to form a saturated electrolyte aqueous solution, and then electrolyzing the saturated electrolyte aqueous solution by the electrolytic generator 7 to generate acidic water 71 and alkaline water 72;
C. when the pressure gauge II detects that the pressure difference of the membrane system of the secondary seawater desalination main machine 4 is higher than a set value, the cleaning program of the equipment is started, the control valve on the acid water discharge pipe is opened, so that the acid water 71 is discharged into the reverse osmosis membrane of the secondary seawater desalination main machine 4 to clean the reverse osmosis membrane, the pH value of the cleaned waste liquid is monitored on line by the pH detector II, and the excessive acid waste water flows into the alkaline water 72 through the branch pipe to be neutralized, so that the waste liquid finally meets the requirement of the environmental-protection discharge standard; after the washing is finished, the control valve on the acid water discharge pipe is closed, namely when the pressure gauge II detects that the pressure difference of the membrane system of the secondary seawater desalination main machine 4 is lower than the set value II, the control valve on the acid water discharge pipe is closed, and the acidic water 71 is stopped to be discharged onto the reverse osmosis membrane of the secondary seawater desalination main machine 4;
D. when the pH detector detects that the pH value of the water production tank 5 is smaller than a set value three, the control valve of the alkaline water discharge pipe is opened, so that alkaline water 72 is discharged into the water production tank 5 through the metering pump 2 to adjust the pH value, and when the pH detector detects that the pH value of the water production tank 5 is larger than a set value four, the control valve of the alkaline water discharge pipe is closed, and the alkaline water 72 is stopped to be discharged into the water production tank 5.
In this embodiment, the pre-treatment filtering device 3 in step a comprises removing impurities in the seawater through a quartz sand filter 31 and removing fine particles in the seawater through a fine filter.
In this embodiment, the first set value and the second set value are different values selected according to different desalination equipment, the first set value is selected conventionally to be 6.5MPa, the second set value is 7.0MPa, the third set value is greater than or equal to 6.5, and the third set value is less than or equal to 7.5.
In this embodiment, the pressure difference of the membrane system of the secondary seawater desalination main unit 4 is the water inlet and outlet pressure difference of the reverse osmosis membrane on the secondary seawater desalination main unit 4.
The utility model discloses be applied to sea water desalination's technical field, still can be applied to in the brackish water desalination field and the other project fields of using reverse osmosis system.
While the embodiments of the present invention have been described in terms of practical embodiments, they are not intended to limit the scope of the invention, and modifications of the embodiments and combinations with other embodiments will be apparent to those skilled in the art in light of the present description.
Claims (7)
1. A green environment-friendly seawater desalination system is characterized in that: it is including sea water inlet tube (1), working pump (2), preliminary treatment filter equipment (3), second grade sea water desalination host computer (4) and the product water tank (5) that communicate in proper order, sea water desalination system still includes function water machine (6), set up electrolysis generator (7) in function water machine (6) and with electrolyte pump (8) that add that electrolysis generator (7) are linked together, electrolysis generator (7) circular telegram electrolysis produces acid water (71) and alkaline water (72), acid water (71) through acid water delivery pipe (9) with second grade sea water desalination host computer (4) are connected, alkaline water (72) through buck delivery pipe (10) with product water tank (5) are connected, acid water delivery pipe (9) and with all be provided with the control valve on buck delivery pipe (10).
2. The green environment-friendly seawater desalination system of claim 1, wherein: the pretreatment filtering device (3) comprises a quartz sand filter (31) and a first precision filter (32), a water inlet of the quartz sand filter (31) is connected with the first water supply pump (2), a water outlet of the quartz sand filter (31) is connected with a water inlet of the first precision filter (32), and a water outlet of the first precision filter (32) is connected with a water inlet of the second-stage seawater desalination host (4).
3. The green environment-friendly seawater desalination system of claim 2, wherein: the functional water machine (6) comprises a water inlet pipe (61), a second water supply pump (62), a filter assembly (63), a high-pressure pump (64), a reverse osmosis membrane assembly (65) and the electrolysis generator (7), which are sequentially communicated, and the electrolyte adding pump (8) is arranged between the reverse osmosis membrane assembly (65) and the electrolysis generator (7).
4. The green environment-friendly seawater desalination system of claim 1, wherein: the electrolyte adding pump (8) is filled with electrolyte solution mainly containing sodium sulfate.
5. The green environment-friendly seawater desalination system of claim 3, wherein: the filter assembly (63) comprises a multi-medium filter (631) and a second precision filter (632) connected with the multi-medium filter (631), a second water supply pump (62) and a first check valve (66) arranged between the multi-medium filter (631), the second precision filter (632) and a first ball valve (67) and a first pressure switch (68) arranged between the high-pressure pumps (64), the high-pressure pumps (64) and a second ball valve (69) and a second check valve (610) arranged between the reverse osmosis membrane assemblies (65), the reverse osmosis membrane assemblies (65) and a second pressure switch sequentially arranged between the electrolysis generator (7), and a fourth ball valve and a metering pump are arranged on an alkaline water discharge pipe and an acid water discharge pipe of the electrolysis generator (7).
6. The green environment-friendly seawater desalination system of claim 3, wherein: a second pressure gauge is arranged at a water production port of the secondary seawater desalination main machine (4), and a first PH detector is arranged in the water production tank (5).
7. The green environment-friendly seawater desalination system of claim 3, wherein: the secondary seawater desalination host (4) is provided with a wastewater discharge pipe, a PH detector II is arranged on the wastewater discharge pipe, a branch pipe communicated with the wastewater discharge pipe is arranged on the alkaline water discharge pipe, and the wastewater discharge pipe and the branch pipe are provided with electric valves.
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| CN201921632333.0U CN210915677U (en) | 2019-09-28 | 2019-09-28 | Green environment-friendly seawater desalination system |
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| CN201921632333.0U CN210915677U (en) | 2019-09-28 | 2019-09-28 | Green environment-friendly seawater desalination system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110627268A (en) * | 2019-09-28 | 2019-12-31 | 珠海市江河海水处理科技股份有限公司 | Environment-friendly seawater desalination system and process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110627268A (en) * | 2019-09-28 | 2019-12-31 | 珠海市江河海水处理科技股份有限公司 | Environment-friendly seawater desalination system and process thereof |
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