CN212076523U - Electric desalting system for reclaimed water - Google Patents
Electric desalting system for reclaimed water Download PDFInfo
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- CN212076523U CN212076523U CN201922465109.3U CN201922465109U CN212076523U CN 212076523 U CN212076523 U CN 212076523U CN 201922465109 U CN201922465109 U CN 201922465109U CN 212076523 U CN212076523 U CN 212076523U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 203
- 238000011033 desalting Methods 0.000 title claims abstract description 91
- 239000012528 membrane Substances 0.000 claims abstract description 82
- 239000013505 freshwater Substances 0.000 claims abstract description 66
- 238000010612 desalination reaction Methods 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 4
- 230000008929 regeneration Effects 0.000 abstract 1
- 238000011069 regeneration method Methods 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000003411 electrode reaction Methods 0.000 description 2
- 238000000909 electrodialysis Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005349 anion exchange Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007646 directional migration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to a water treatment system, in particular to electric desalting system for reclaimed water. The device comprises a combined bracket and more than two rolled type electric desalting devices movably connected to the combined bracket; the combined bracket comprises a fresh water inlet pipe, a fresh water outlet pipe, a concentrated water inlet pipe, a concentrated water outlet pipe and an electrode water outlet pipe; the roll-type desalting device comprises a first filter, a first-stage spiral roll-type electric desalting membrane stack, a second-stage spiral roll-type electric desalting membrane stack and a concentrated water tank; the first filter comprises a filtering water inlet end and a filtering water outlet end; the filtered water outlet end is connected with the first raw water inlet end, and the first fresh water outlet end is connected with the second fresh water inlet end; the first concentrated water inlet end is connected with the second concentrated water inlet end in parallel; the water outlet end of the first concentrated water is connected in parallel with the water outlet end of the second concentrated water. The utility model discloses regeneration water is with electric desalination system adopts specific sectional shelf-unit connection structure, and the specific formula of book electric desalination device of built-up mounting has reduced area greatly, has both done benefit to the installation, the later stage maintenance of also being convenient for.
Description
Technical Field
The utility model relates to a water treatment system, in particular to electric desalting system for reclaimed water.
Background
With the shortage of fresh water resources in recent years and the increasing serious environmental pollution, many countries in the world face the crisis of fresh water, and the water resources become strategic resources which restrict the development of social economy and the living environment of human beings. The desalting treatment is a new industry, has wide market development prospect and huge market space.
At present, people have developed various desalination technologies, and an electric desalination system can realize the directional migration of ions under the action of a direct current electric field through the selective permeation action of an electromagnetic field to anions and cations through anion and cation exchange membranes, thereby completing the deep desalination of water.
However, the desalination device equipment on the market is placed in a single mode, so that the occupied area is large, the installation is not facilitated, and the later-period maintenance is also not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an easy operation, the cost of manufacture is little, and equipment transport is convenient, simple structure's combination formula electric drive system.
The above technical purpose of the present invention can be achieved by the following technical solutions:
an electric desalting system for reclaimed water comprises a combined bracket and more than two roll-type electric desalting devices movably connected to the combined bracket;
the combined bracket comprises a fresh water inlet pipe, a fresh water outlet pipe, a concentrated water inlet pipe, a concentrated water outlet pipe and an electrode water outlet pipe;
the roll type electric desalting device comprises a first filter, a first-stage spiral roll type electric desalting membrane stack, a second-stage spiral roll type electric desalting membrane stack and a concentrated water tank;
the first filter comprises a filtering water inlet end and a filtering water outlet end;
the first-stage spiral-wound type electric desalting membrane stack comprises a first raw water inlet end, a first concentrated water inlet end, a first fresh water outlet end and a first concentrated water outlet end;
the second spiral-wound type electric desalting membrane stack comprises a second fresh water inlet end, a second concentrated water inlet end, a second fresh water outlet end and a second concentrated water outlet end;
the filtered water outlet end is connected with the first raw water inlet end, and the first fresh water outlet end is connected with the second fresh water inlet end;
the first concentrated water inlet end is connected with the second concentrated water inlet end in parallel; the first concentrated water outlet end and the second concentrated water outlet end are connected in parallel.
The utility model discloses a roll-type electric desalting system adopts specific combination support connection structure, and the specific roll-type electric desalting device is installed in a combined manner, and the module integration level under the roll-type structure is high, and through drawer type or vertical stacking and placing mode, the occupied area is greatly reduced, thereby being beneficial to installation and later maintenance; and the connection mode of the front-stage concentrated water chamber and the rear-stage fresh water chamber of the spiral roll type electric desalting device is parallel connection, concentrated water circulates, the connection mode of the front-stage fresh water chamber and the rear-stage fresh water chamber is series connection, and fresh water passes through once. Fresh water and concentrated water enter the membrane stack through the guide pipe. The spiral roll type electric desalting device with the specific structure is applied and connected, the front and rear concentrated water chambers are connected in parallel, the concentrated water flow is short, the concentration difference of concentrated water and fresh water in the rear membrane stack is small, the concentrated water flowing out from the central tube of the upper membrane stack carries gas generated by electrode reaction and cannot enter the concentrated water chamber of the lower membrane stack, the effective conductivity of the concentrated water is prevented from being reduced, and therefore the resistance voltage drop and the current efficiency of the concentrated water can be prevented from being increased.
Preferably, the combined support is a multi-layer vertical combined support, the roll-type electric desalting device is vertically arranged, and the fresh water inlet pipe, the fresh water outlet pipe, the concentrated water inlet pipe, the concentrated water outlet pipe and the polar water outlet pipe are connected and arranged at the lower end part of each layer of roll-type electric desalting device.
The combined bracket of the device is a vertical combined bracket with more than two layers, is installed and combined into a pipeline system which is orderly connected, and can process a large amount of industrial raw water in unit area so as to prepare high-quality pure water.
Preferably, the combined support is a multi-layer drawer type combined support, the roll-type electric desalting device is horizontally arranged, and the fresh water inlet pipe, the fresh water outlet pipe, the concentrated water inlet pipe, the concentrated water outlet pipe and the polar water outlet pipe are connected and arranged on the side face of one end of each layer of roll-type electric desalting device.
The combined bracket of the device is a drawer type combined bracket with more than two layers, and is installed and combined into a pipeline system which is connected in order; the electric desalting devices in each layer of drawers can be increased or reduced according to actual conditions, so that the installation is facilitated, later maintenance is facilitated, and a large amount of industrial raw water can be treated in a unit area, so that high-quality pure water is prepared.
Preferably, the roll-type electric desalting device is a large-flux roll-type electric desalting device and comprises a shell and a membrane core; the membrane core comprises a core body and an end cover, the core body is arranged in the outer shell, and the end cover is sleeved in the connecting part of the sealing sleeve and the outer shell; the membrane unit comprises a positive membrane and a negative membrane;
the shell body is a UPVC shell formed in a segmented mode;
the end cover is an arched end cover, and a plurality of limiting bayonet locks capable of being clamped on the outer shell are uniformly arranged on the outer wall of the arched end cover at intervals.
The utility model discloses a big flux book formula EDI subassembly, through the winding membrane core of book formula, the positive and negative grade that sets up inside and outside for the electric field has a change in the intensity of treating the water purification flow direction, thereby has accomplished the separation step by step to different particles, make full use of electric energy, has alleviated dense water room scale deposit tendency simultaneously; further saving system pipelines and occupied space and reducing the cost of water per ton; the arched end cover is clamped with the shell, so that the arched end cover is not easy to turn over due to the internal pressure of the component and is tightly connected; the setting of spacing bayonet lock has improved the holistic bearing capacity of arch end cover.
Preferably, the first raw water inlet end is connected with a water inlet main pipe, the water inlet main pipe comprises a plurality of water flow inlet branch pipes which are annularly arranged, the water flow inlet branch pipes are connected with a fresh water inlet main pipe body together, and the fresh water inlet main pipe body is provided with a first raw water inlet end.
Preferably, a filter plate is arranged on the end face of the membrane core, water distribution holes are formed in the filter plate and are horn-shaped holes, large holes of the horn-shaped holes face upwards, needle holes are formed in the side face of each horn-shaped hole and communicated with the lower surface of the filter plate, and ribs which are radially arranged are formed on the outer wall of each horn-shaped hole. Therefore, the fresh water can be distributed more uniformly, and the pressure difference between two sides of the membrane is easy to regulate and control.
Preferably, the fresh water flow in the first-stage spiral-wound type electric desalting membrane stack is axial flow, and the fresh water flow in the second-stage spiral-wound type electric desalting membrane stack is axial flow; the concentrated water in the first-stage spiral-wound type electric desalting membrane stack flows in a radial direction, the dilute water in the second-stage spiral-wound type electric desalting membrane stack flows in a radial direction, and the flow direction of the dilute water flows from the outer electrode to the central tube in a spiral manner. The structure of the invention can adjust the working voltage to make each stage of membrane stack operate under the optimal working condition.
Preferably, the primary spiral-wound type electric desalting membrane stack and the secondary spiral-wound type electric desalting membrane stack are supplied with direct current by independent electric channels; a concentrated water pump and a concentrated water regulating valve K are arranged on a pipeline of the concentrated water tank communicated with the first concentrated water inlet end and the second concentrated water inlet end; and a degasser is additionally arranged at the top of the concentrated water tank. Therefore, the gas carried by the backflow concentrated water can be removed, and the gas generated by the electrode reaction carried by the concentrated water flowing out of the central tube of the previous-stage membrane stack is further prevented from entering the concentrated water chamber of the next-stage membrane stack, so that the effective conductivity of the concentrated water is prevented from being reduced, and the resistance pressure drop and the current efficiency of the concentrated water can be prevented from being increased.
Preferably, the second-stage spiral-wound type electric desalting membrane stack is connected with a third-stage spiral-wound type electric desalting membrane stack, and the second fresh water outlet end is connected with a third-stage fresh water inlet end of the third-stage spiral-wound type electric desalting membrane stack; the second concentrated water inlet end is connected in parallel with the third concentrated water inlet end of the third spiral wound type electric desalting membrane stack; the second concentrated water outlet end is connected in parallel with the third concentrated water outlet end of the third-stage spiral roll type electric desalting membrane stack.
The multistage spiral-wound type electric desalting membrane pile is arranged in a series-parallel connection structure of concentrated fresh water, so that the desalting effect can be further improved while the current efficiency is prevented from being reduced.
Preferably, the filtering water inlet end is connected with a raw water pump, and the outlet of the concentrated water pump is provided with a second filter; the filtering precision of the first filter and the second filter is 5 μm or 10 μm. The outlets of the raw water pump and the concentrated water pump are provided with filters, so that suspended matters in the inlet water can be removed better.
To sum up, the utility model discloses following beneficial effect has:
1. the structure is simple, and the volume of the equipment can be reduced;
2. the device can be integrally moved in a modularized manner, so that the device is heavy and needs to be carried by a single machine;
3. the pipeline connection is clear and orderly, and the maintenance is convenient;
4. the device can be installed according to actual requirements, and can be connected in parallel or in series, so that the utilization rate of the device is improved.
Drawings
FIG. 1 is a front view of the drawer-type combination bracket of the present invention;
FIG. 2 is a top view of the drawer-type combination bracket of the present invention;
FIG. 3 is a top view of the vertical combination support of the present invention;
fig. 4 is a front view of the vertical combination support of the present invention;
FIG. 5 is a schematic view of a roll-to-roll type electric desalter of the present invention;
FIG. 6 is a schematic view of the water hole structure of the spiral-wound electric desalting membrane pile.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-6, the electric desalting system for reclaimed water comprises a combined bracket 1 and more than two roll-type electric desalting devices 2 movably connected to the combined bracket 1; the combined bracket 1 comprises a fresh water inlet pipe 11, a fresh water outlet pipe 12, a concentrated water inlet pipe 13, a concentrated water outlet pipe 14 and a polar water outlet pipe 15.
The roll type electric desalting device 2 comprises a first filter 21, a first-stage spiral roll type electric desalting membrane stack 22, a second-stage spiral roll type electric desalting membrane stack 23 and a concentrated water tank 24; the first filter 21 includes a filtered water inlet end 211 and a filtered water outlet end 212; the first-stage spiral-wound type electro-desalting membrane stack 22 comprises a first raw water inlet end 221, a first concentrated water inlet end 222, a first fresh water outlet end 223 and a first concentrated water outlet end 224; the second spiral wound type electro-desalting membrane stack 23 comprises a second fresh water inlet end 231, a second concentrated water inlet end 232, a second fresh water outlet end 233 and a second concentrated water outlet end 234; the filtered water outlet end 212 is connected with the first raw water inlet end 221, and the first fresh water outlet end 223 is connected with the second fresh water inlet end 231; the first concentrated water inlet end 222 is connected in parallel with the second concentrated water inlet end 232; the first concentrated water outlet end 224 is connected in parallel with the second concentrated water outlet end 234.
The sectional shelf 1 is preferably a vertical sectional shelf or a drawer sectional shelf. The roll-type electric desalting devices can be connected in series or in parallel according to actual needs, and preferably more than two roll-type electric desalting devices 2 are connected in parallel.
When the combined support 1 is a multi-layer vertical combined support, the roll-type electric desalting device 2 can be vertically arranged, and the fresh water inlet pipe 11, the fresh water outlet pipe 12, the concentrated water inlet pipe 13, the concentrated water outlet pipe 14 and the polar water outlet pipe 15 are preferably connected and arranged at the lower end part of each layer of the roll-type electric desalting device 2.
When the combined support 1 is a multi-layer drawer type combined support, the roll-type electric desalting devices 2 can be horizontally placed, and the fresh water inlet pipe 11, the fresh water outlet pipe 12, the concentrated water inlet pipe 13, the concentrated water outlet pipe 14 and the polar water outlet pipe 15 are preferably connected and arranged on one side surface of each layer of the roll-type electric desalting devices 2.
In order to improve the filtration flux and the utilization rate of unit area, the roll-type electric desalting device 2 is a large-flux roll-type electric desalting device which comprises a shell and a membrane core; the membrane core comprises a core body and an end cover 255, the core body is arranged in the outer shell, and the end cover 255 is sleeved in the connecting part of the sealing sleeve and the outer shell; the membrane unit comprises a positive membrane and a negative membrane; the outer shell is a UPVC shell formed in a segmented mode; the end cover 255 is an arched end cover, and a plurality of limiting bayonet pins 255a which can be clamped on the outer shell body are uniformly arranged on the outer wall of the arched end cover at intervals. The end cover is an arch end cover, and a plurality of limiting bayonet locks which can be clamped on the outer shell body are uniformly arranged on the outer wall of the arch end cover at intervals.
The membrane core end face is provided with a filter plate 227, the filter plate 227 is provided with water distribution holes 2271, the water distribution holes 2271 are horn holes, large holes of the horn holes face upwards, pinholes 2272 are arranged on the side face of the horn holes and communicated with the lower surface of the filter plate 227, and ribs 2273 formed in a radial arrangement mode are arranged on the outer wall of the horn holes.
The fresh water in the first-stage spiral-wound type electro-desalting membrane stack 22 flows axially, and the fresh water in the second-stage spiral-wound type electro-desalting membrane stack 23 flows axially; the concentrated water in the first-stage spiral-wound type electro-desalting membrane stack 22 flows in a radial direction, and the dilute water in the second-stage spiral-wound type electro-desalting membrane stack 23 flows in a radial direction, and flows in a spiral manner from the outer electrode to the central tube.
The first-stage spiral-wound type electric desalting membrane stack 22 and the second-stage spiral-wound type electric desalting membrane stack 23 are supplied with direct current by independent electric channels; a concentrated water pump 25 and a concentrated water regulating valve K are arranged on a pipeline of the concentrated water tank 24 communicated with the first concentrated water inlet end 222 and the second concentrated water inlet end 232; a deaerator 26 is added to the top of the concentrate tank 24.
The second-stage spiral-wound type electric desalting membrane stack 23 is connected with a third-stage spiral-wound type electric desalting membrane stack 27, and the second fresh water outlet end 223 is connected with a third-stage fresh water inlet end of the third-stage spiral-wound type electric desalting membrane stack; the second concentrated water inlet end 222 is connected in parallel with the third concentrated water inlet end of the third-stage spiral wound electro-desalting membrane stack; the second concentrated water outlet end 224 is connected in parallel with the third concentrated water outlet end of the third spiral-wound electro-desalting membrane stack.
The filtering water inlet end 211 is connected with a raw water pump 28, and the outlet of the concentrated water pump 25 is provided with a second filter 29; the first filter 21 and the second filter 29 have a filtering accuracy of 5 μm or 10 μm.
The effluent of an MBR membrane bioreactor in a water treatment workshop of a certain petrochemical enterprise is used as make-up water of an open circulating cooling water system after electrodialysis desalination. The conductivity of raw water is 2240mg/L, the hardness of calcium and magnesium is 328mg/L, and the total alkalinity is 100 mg/L. The chloride ion concentration is 450 mg/L. The conductivity of the fresh water is required to be lower than 800mg/L, and the concentration of chloride ions is required to be lower than 100 mg/L.
Application example 1
The raw water is pressurized by a raw water pump, flows through a filter with the diameter of 10 mu m and then enters a spiral-wound electrodialysis membrane stack. Fresh waterAnd the concentrated water enters the membrane stack through the guide pipe, the fresh water flows axially, and the concentrated water flows to the central pipe from the outer wall in a spiral manner. The polar water is led out from the polar water chamber to the direct-discharge polar water tank. Each membrane stack is supplied with direct current by an independent electrical channel. The first stage operating voltage is adjusted to 72V, and the second stage operating voltage is adjusted to 70V. The two-stage operating current is 38A. The flow rate of raw water is 6m3The flow rate of concentrated water is 5m3H is used as the reference value. The water inlet pressure of raw water is 0.1MPa, and the water inlet pressure of concentrated water is 0.1 MPa. The flow rate of each stage of polar water is adjusted to be 150L/h. The concentration multiple of the concentrated water is 5 times. And (4) metering hydrochloric acid into the concentrated water tank, and controlling the pH value to be 4. After 4 hours of stable operation, samples were taken for fresh water quality analysis. 595mg/L of fresh water conductivity, 91mg/L of calcium and magnesium hardness and 90mg/L of chloride ion concentration.
When the system is actually installed and used, the volume of equipment can be reduced, and the condition that the device is heavy and needs to be carried by a single machine is avoided; the maintenance is convenient, and if a plurality of assemblies are stacked together, the maintenance is inconvenient although the occupied area is small; the device can be installed according to actual requirements, a plurality of devices can be connected in parallel or in series, and the utilization rate of the device is improved.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (9)
1. An electric desalting system for reclaimed water is characterized by comprising a combined bracket (1) and more than two rolled type electric desalting devices (2) movably connected to the combined bracket (1);
the combined bracket (1) comprises a fresh water inlet pipe (11), a fresh water outlet pipe (12), a concentrated water inlet pipe (13), a concentrated water outlet pipe (14) and a polar water outlet pipe (15);
the roll type electric desalting device (2) comprises a first filter (21), a first-stage spiral roll type electric desalting membrane stack (22), a second-stage spiral roll type electric desalting membrane stack (23) and a concentrated water tank (24);
the first filter (21) comprises a filter water inlet end (211) and a filter water outlet end (212);
the first-stage spiral-wound type electro-desalting membrane stack (22) comprises a first raw water inlet end (221), a first concentrated water inlet end (222), a first fresh water outlet end (223) and a first concentrated water outlet end (224);
the two-stage spiral-wound type electro-desalting membrane stack (23) comprises a second fresh water inlet end (231), a second concentrated water inlet end (232), a second fresh water outlet end (233) and a second concentrated water outlet end (234);
the filtering water outlet end (212) is connected with the first raw water inlet end (221), and the first fresh water outlet end (223) is connected with the second fresh water inlet end (231);
the first concentrated water inlet end (222) is connected with the second concentrated water inlet end (232) in parallel; the first concentrated water outlet end (224) is connected with the second concentrated water outlet end (234) in parallel.
2. An electric desalination system for regenerated water according to claim 1, characterized in that: the combined support (1) is a multilayer vertical combined support, the roll-type electric desalting device (2) is vertically arranged, and the fresh water inlet pipe (11), the fresh water outlet pipe (12), the concentrated water inlet pipe (13), the concentrated water outlet pipe (14) and the polar water outlet pipe (15) are connected and arranged at the lower end part of each layer of roll-type electric desalting device (2).
3. An electric desalination system for regenerated water according to claim 1, characterized in that: the combined support (1) is a multilayer drawer type combined support, the roll-type electric desalting devices (2) are horizontally arranged, and the fresh water inlet pipe (11), the fresh water outlet pipe (12), the concentrated water inlet pipe (13), the concentrated water outlet pipe (14) and the polar water outlet pipe (15) are connected and arranged on the side face of one end of each layer of roll-type electric desalting device (2).
4. An electric desalination system for regenerated water according to claim 2 or 3, characterized in that: the roll-type electric desalting device (2) is a large-flux roll-type electric desalting device and comprises an outer shell, a membrane core, a sealing sleeve and a membrane unit; the membrane core comprises a core body and an end cover (255), the core body is arranged in the outer shell, and the end cover (255) is sleeved in the connecting part of the sealing sleeve and the outer shell; the membrane unit comprises a positive membrane and a negative membrane;
the shell body is a UPVC shell formed in a segmented mode;
the end cover is an arched end cover, and a plurality of limiting bayonet locks capable of being clamped on the outer shell are uniformly arranged on the outer wall of the arched end cover at intervals.
5. An electric desalination system for regenerated water according to claim 4, characterized in that: the membrane core terminal surface is provided with filter plate (227), be provided with water distribution hole (2271) on filter plate (227), water distribution hole (2271) are the bell mouth, the bell mouth macropore is up, the bell mouth side is equipped with pinhole (2272) and leads to filter plate (227) lower surface, be provided with bead (2273) that radial arrangement formed on the bell mouth outer wall.
6. An electric desalination system for regenerated water according to claim 1, characterized in that: the fresh water in the first-stage spiral-wound type electric desalting membrane stack (22) flows axially, and the fresh water in the second-stage spiral-wound type electric desalting membrane stack (23) flows axially; concentrated water in the first-stage spiral-wound type electric desalting membrane stack (22) flows in a radial direction, and fresh water in the second-stage spiral-wound type electric desalting membrane stack (23) flows in a radial direction, and flows from the outer electrode to the central tube in a spiral manner.
7. An electric desalination system for regenerated water according to claim 1, characterized in that: the primary spiral-wound type electric desalting membrane stack (22) and the secondary spiral-wound type electric desalting membrane stack (23) are supplied with direct current by independent electric channels; a concentrated water pump (25) and a concentrated water regulating valve K are arranged on a pipeline of the concentrated water tank (24) communicated with the first concentrated water inlet end (222) and the second concentrated water inlet end (232); and a degasser (26) is additionally arranged at the top of the concentrated water tank (24).
8. An electric desalination system for regenerated water according to claim 6 or 7, characterized in that: the second-stage spiral-wound type electric desalting membrane stack (23) is connected with a third-stage spiral-wound type electric desalting membrane stack, and the second fresh water outlet end (233) is connected with a third-stage fresh water inlet end of the third-stage spiral-wound type electric desalting membrane stack; the second concentrated water inlet end (232) is connected with the third concentrated water inlet end of the third-stage spiral roll type electric desalting membrane stack in parallel; the second concentrated water outlet end (234) is connected in parallel with the third concentrated water outlet end of the third-stage spiral roll type electric desalting membrane stack.
9. An electric desalination system for regenerated water according to claim 6 or 7, characterized in that: the filtering water inlet end (211) is connected with a raw water pump (28), and the outlet of the concentrated water pump (25) is provided with a second filter (29); the filtering precision of the first filter (21) and the second filter (29) is 5 μm or 10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922465109.3U CN212076523U (en) | 2019-12-31 | 2019-12-31 | Electric desalting system for reclaimed water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922465109.3U CN212076523U (en) | 2019-12-31 | 2019-12-31 | Electric desalting system for reclaimed water |
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| CN212076523U true CN212076523U (en) | 2020-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111003764A (en) * | 2019-12-31 | 2020-04-14 | 浙江中凯瑞普环境工程股份有限公司 | Electric desalting system for reclaimed water and application thereof |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111003764A (en) * | 2019-12-31 | 2020-04-14 | 浙江中凯瑞普环境工程股份有限公司 | Electric desalting system for reclaimed water and application thereof |
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