CN212387779U - A high-efficiency cleaning device for particulate fouling of electric desalination device - Google Patents
A high-efficiency cleaning device for particulate fouling of electric desalination device Download PDFInfo
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- CN212387779U CN212387779U CN202021652595.6U CN202021652595U CN212387779U CN 212387779 U CN212387779 U CN 212387779U CN 202021652595 U CN202021652595 U CN 202021652595U CN 212387779 U CN212387779 U CN 212387779U
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- 238000004140 cleaning Methods 0.000 title claims abstract description 103
- 238000010612 desalination reaction Methods 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 323
- 238000011033 desalting Methods 0.000 claims abstract description 99
- 239000013505 freshwater Substances 0.000 claims abstract description 78
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 34
- 239000011780 sodium chloride Substances 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000011001 backwashing Methods 0.000 claims description 57
- 210000001503 joint Anatomy 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 19
- 238000010992 reflux Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 239000010865 sewage Substances 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 7
- 239000003814 drug Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract description 2
- 241000242583 Scyphozoa Species 0.000 abstract 4
- 239000011347 resin Substances 0.000 description 21
- 229920005989 resin Polymers 0.000 description 21
- 238000005406 washing Methods 0.000 description 14
- 239000008187 granular material Substances 0.000 description 9
- 239000012528 membrane Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 230000009466 transformation Effects 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 150000001450 anions Chemical class 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 238000009296 electrodeionization Methods 0.000 description 3
- 238000000909 electrodialysis Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002522 swelling effect Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000072 sodium resin Substances 0.000 description 1
- 238000011272 standard treatment Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
本实用新型公开了一种电除盐装置颗粒性污堵的高效清洗装置，包括清洗水箱、保安过滤器、反洗水母管、淡水室反洗水进水支管、浓水室反洗水进水支管、电除盐模块、淡水回流支管、浓水回流支管及反洗回水循环母管；清洗水箱上部设置有氯化钠加药口，清洗水箱的出水口与保安过滤器相连通，保安过滤器的出水口与反洗水母管相连通；反洗水母管分别与淡水室反洗水进水支管的入口和浓水室反洗水进水支管的入口相连通；淡水室反洗水进水支管与电除盐模块中电除盐淡水室的产水口相连通；浓水室反洗水进水支管与电除盐模块中电除盐浓水室的排水口相连通，该装置能够彻底解决电除盐进水流到过窄、清洗空间有限造成的颗粒性污堵物清洗效率低的问题，清洗效果优于传统清洗方式，继而延长电除盐模块的使用寿命，降低电除盐模块的运行成本。
The utility model discloses a high-efficiency cleaning device for particulate fouling of an electric desalination device, comprising a cleaning water tank, a security filter, a backwash jellyfish pipe, a backwash water inlet branch pipe in a fresh water chamber, and a backwash water inlet in a concentrated water chamber Branch pipe, electric desalination module, fresh water return branch pipe, concentrated water return branch pipe and backwash return water circulation main pipe; the upper part of the cleaning water tank is provided with a sodium chloride dosing port, and the water outlet of the cleaning water tank is connected to the security filter, and the security filter The water outlet of the backwash jellyfish is connected with the backwash jellyfish pipe; the backwash jellyfish pipe is connected with the inlet of the backwash water inlet branch pipe of the fresh water chamber and the inlet of the backwash water inlet branch pipe of the concentrated water chamber; the backwash water inlet branch pipe of the fresh water chamber is respectively connected It is connected with the water production port of the fresh water chamber of the electric desalination module; the inlet branch pipe of the backwash water of the concentrated water chamber is connected with the drain of the concentrated water chamber of the electric desalination module. The device can completely solve the problem of electricity. The problem of low cleaning efficiency of particulate fouling and blocking caused by too narrow influent water for desalination and limited cleaning space. The cleaning effect is better than that of traditional cleaning methods, thereby extending the service life of the electrical desalting module and reducing the operating cost of the electrical desalting module. .
Description
Technical Field
The utility model belongs to the technical field of feedwater and waste water treatment, a dirty stifled high-efficient belt cleaning device of electric demineralizer granule nature is related to.
Background
The Electric Desalting (EDI) is a technology for preparing pure water without consuming acid and alkali, and is a novel membrane separation technology formed by organically combining the traditional electrodialysis technology and the ion exchange technology, which not only overcomes the defect that the electrodialysis cannot deeply remove the salt, but also makes up the defects that the ion exchange cannot continuously work and the acid and alkali are consumed for regeneration. The electric desalting device has the outstanding advantages of convenient operation, good effluent quality, stable performance, small occupied area and the like in the water treatment process. The method can be used for the production of ultrapure water, the desalination and softening of drinking water and industrial water, and the resource recovery and standard treatment of heavy metal wastewater. With the gradual enhancement of environmental protection and resource saving consciousness, the electric demineralizer technology is widely applied to the field of boiler feedwater treatment of thermal power plants, and can provide more high-quality, stable and reliable feedwater for modern high-parameter generator sets. With the continuous popularization and application of the electric desalting technology in a chemical boiler make-up water treatment system of a power plant, some power plants gradually expose some problems in the electric desalting application process, such as the phenomena of membrane block pollution and blockage, poor product water quality, output reduction, difficulty in recovery and the like.
The water is produced to reverse osmosis by the electricity demineralizer of general thermal power plant carries out degree of depth desalination, because reverse osmosis produces water quality of water better, consequently take place to cause dirty stifled probability less because of quality of water hardness and organic matter are dirty, mainly because make water in-process demineralized water tank, the inside lining anticorrosive material who overflows the pipeline drops, the welding slag piece drops to and the mechanical jam that particulate matter such as dust got into the EDI module and arouse, can reduce the diaphragm through-flow area, it is inhomogeneous to arouse rivers distribution between the module. The main phenomena are that the pressure difference of inlet and outlet water of the membrane block is increased, the phenomena mainly occur in a resin layer of the fresh water chamber, and when the blockage is serious, the similar phenomenon also occurs in the concentrated water chamber. However, because the water flow channel in the membrane block of the electric desalting device is narrow, the structure is precise, and the requirement on cleaning media in the assembly is high, the cleaning effect is difficult to achieve by common mechanical backwashing and chemical cleaning. Therefore, once such a situation occurs, if the cleaning conditions are improperly controlled, the whole membrane module is likely to be discarded and replaced again, and the electric desalting device causes higher running cost and higher water production cost, which seriously affects the service life of the electric desalting module.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a dirty stifled high-efficient belt cleaning device of electric desalting device granule nature, the device can effectively get rid of the dirty stifled thing of granule nature in the electric desalting module, improves electric desalting device's cleaning performance.
In order to achieve the purpose, the utility model discloses a high-efficient cleaning device that electric desalting device granule nature is dirty stifled includes that the washing water tank, safety filter, backwash water female pipe, fresh water room backwash water inlet branch pipe, dense water room backwash water inlet branch pipe, electric desalting module, fresh water backward flow branch pipe, dense water backward flow branch pipe and backwash return water circulation female pipe;
the upper part of the cleaning water tank is provided with a sodium chloride dosing port, the water outlet of the cleaning water tank is communicated with a security filter, and the water outlet of the security filter is communicated with a backwashing water main pipe; the backwashing main pipe is respectively communicated with the inlet of the backwashing water inlet branch pipe of the fresh water chamber and the inlet of the backwashing water inlet branch pipe of the concentrated water chamber; the back washing water inlet branch pipe of the fresh water chamber is communicated with a water production port of the electric desalting fresh water chamber in the electric desalting module; the back washing water inlet branch pipe of the concentrated water chamber is communicated with a water outlet of the electric desalting concentrated water chamber in the electric desalting module;
an electric desalting water inlet of the electric desalting module is communicated with the fresh water backflow branch pipe; an electric desalting concentrated water replenishing port of the electric desalting module is communicated with a concentrated water reflux branch pipe; the fresh water return branch pipe and the concentrated water return branch pipe are communicated with the inlet of the backwashing water return circulation main pipe, and the outlet of the backwashing water return circulation main pipe is communicated with the cleaning water tank; be equipped with fresh water side return-flow control valve on the fresh water backward flow branch pipe, be equipped with concentrated water side return-flow control valve on the concentrated water backward flow branch pipe, the entrance intercommunication of fresh water side return-flow control valve has first blowdown branch pipe, and the entrance intercommunication of concentrated water side return-flow control valve has second blowdown branch pipe, and wherein, be provided with fresh water side blowoff valve on the first blowdown branch pipe, be provided with concentrated water side blowoff valve on the second blowdown branch pipe.
The water outlet of the cleaning water tank is communicated with a security filter through a water tank outlet valve, a cleaning water pump and a filter inlet valve in sequence, the bottom of the security filter is provided with a filter blow-down valve, and the water outlet of the security filter is communicated with a backwashing water main pipe through a filter outlet valve.
The back washing water inlet branch pipe of the fresh water chamber is communicated with a water production port of an electric desalting fresh water chamber in the electric desalting module through a detachable butt joint interface of a fresh water chamber water inlet pipe; the concentrated water chamber backwashing water inlet branch pipe is communicated with a water outlet of the electric desalting concentrated water chamber in the electric desalting module through a detachable butt joint interface of a concentrated water chamber water inlet pipe.
A fresh water chamber backwashing water inlet flow meter and a fresh water chamber water inlet regulating valve are arranged on the fresh water chamber backwashing water inlet branch pipe;
the back washing water inlet branch pipe of the concentrated water chamber is provided with a back washing water inlet flowmeter of the concentrated water chamber and a water inlet regulating valve of the concentrated water chamber.
An electric desalting water inlet of the electric desalting module is communicated with the fresh water backflow branch pipe through a detachable butt joint interface at the water inlet side;
and an electric desalting concentrated water replenishing port of the electric desalting module is communicated with a concentrated water reflux branch pipe through a concentrated water side detachable butt joint interface.
The sewage treatment device further comprises a waste liquid pool, wherein the outlet of the first sewage discharging branch pipe and the outlet of the second sewage discharging branch pipe are communicated with the inlet of the waste liquid pool.
A pressure gauge is arranged at the outlet of the cleaning water pump, the outlet of the cleaning water pump is divided into two paths, wherein one path is communicated with the inlet of the security filter through a filter inlet valve, the other path is communicated with the inlet of the cleaning water tank through a backwashing water bypass flow loop, and a bypass control valve is arranged on the backwashing water bypass flow loop;
the sodium chloride dosing port is provided with a dosing control valve, the cleaning water tank is provided with a liquid level meter, and the bottom sewage discharge port of the cleaning water tank is provided with a cleaning water tank sewage discharge valve.
The utility model discloses following beneficial effect has:
a dirty stifled high-efficient belt cleaning device of electric demineralizer granule nature when concrete operation, the washing liquid is by the reverse washing female pipe respectively through the fresh water room product mouth of a river and the reverse electrodialysis module that gets into in outlet of dense water room of electric demineralizer module, at last through electric demineralizer module intake side water inlet and dense water side make-up mouth reverse outflow return wash the water tank, the electric demineralizer membrane piece is in the in-service use in-process, the product mouth of electric demineralizer membrane piece is used for discharging the fresh water that produces, dense water drainage mouth is used for discharging dense water, the water inlet is used for annotating water into in the fresh water room, dense water make-up mouth is used for moisturizing to dense water room, the utility model discloses with the fluid flow direction of electric demineralizer membrane piece in the in-service use process is opposite when washing, consequently can realize the washing against the current of electric demineralizer module. Furthermore, the utility model discloses adopt NaCl to carry out the transformation to the resin in the electric desalting module for the first time to increase and wash more than 20% space, thoroughly solve the problem that the dirty stifled thing cleaning efficiency of granule nature that electric desalting influent flow to narrow, the limited space that causes of washing is low. The cleaning effect is superior to that of the traditional cleaning mode, so that the service life of the electric desalting module is prolonged, and the running cost of the electric desalting module is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a cleaning water tank, 2 is a water outlet valve of the water tank, 3 is a cleaning water pump, 4 is a filter inlet valve, 5 is a security filter, 6 is a pressure gauge, 7 is a backwash water bypass loop, 8 is a bypass control valve, 9 is a filter outlet valve, 10 is a filter blow-down valve, 11 is a fresh water chamber backwash water inlet branch pipe, 12 is a concentrated water chamber backwash water inlet branch pipe, 13 is a fresh water chamber backwash water inlet flow meter, 14 is a concentrated water chamber backwash water inlet flow meter, 15 is a fresh water chamber inlet regulating valve, 16 is a concentrated water chamber inlet regulating valve, 17 is a fresh water chamber inlet pipe detachable butt joint interface, 18 is a concentrated water chamber inlet pipe detachable butt joint interface, 19 is an electric desalting module, 20 is a water inlet side detachable butt joint interface, 21 is a concentrated water side detachable butt joint interface, 22 is a fresh water side reflux regulating valve, 23 is a concentrated water side reflux regulating valve, 24 is a backwash circulation main pipe, 25 is a drain valve at the concentrated water side, 26 is a drain valve at the fresh water side, 27 is a drain valve of a cleaning and cleaning water tank, 28 is a dosing control valve, 29 is a liquid level meter, 30 is a sodium chloride dosing port, 31 is a backwash mother pipe, 32 is a fresh water return branch pipe, 33 is a concentrated water return branch pipe, and 34 is a conductivity meter.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the efficient cleaning device for granular dirt blockage of an electric desalting device of the present invention comprises a cleaning water tank 1, a cleaning water pump 3, a security filter 5, a backwash water main pipe 31, a backwash water bypass loop 7 and a backwash return water circulation main pipe 24; a water outlet, a reflux inlet and a side flow inlet are arranged on the cleaning water tank 1; the water outlet of the cleaning water tank 1 is communicated with a security filter 5 through a water tank outlet valve 2, a cleaning water pump 3 and a filter inlet valve 4 in sequence, and the bottom of the security filter 5 is provided with a filter blow-down valve 10; the water outlet of the cartridge filter 5 is communicated with a backwashing water main pipe 31 through a filter outlet valve 9; the backwashing water main pipe 31 is respectively communicated with the inlet of the backwashing water inlet branch pipe 11 of the fresh water chamber and the inlet of the backwashing water inlet branch pipe 12 of the concentrated water chamber; the backwash water inlet branch pipe 11 of the fresh water chamber is communicated with a water production port of an electric desalting fresh water chamber in the electric desalting module 19 through a detachable butt joint interface 17 of a fresh water chamber water inlet pipe; the back washing water inlet branch pipe 12 of the concentrated water chamber is communicated with a water outlet of an electric desalting concentrated water chamber in the electric desalting module 19 through a detachable butt joint interface 18 of a water inlet pipe of the concentrated water chamber; a fresh water chamber backwashing water inlet flow meter 13 and a fresh water chamber water inlet regulating valve 15 are arranged on the fresh water chamber backwashing water inlet branch pipe 11; a concentrated water chamber backwashing water inlet flowmeter 14 and a concentrated water chamber water inlet regulating valve 16 are arranged on the concentrated water chamber backwashing water inlet branch pipe 12; the electric desalting water inlet of the electric desalting module 19 is communicated with the fresh water backflow branch pipe 32 through the water inlet side detachable butt joint interface 20; an electric desalting concentrated water replenishing port of the electric desalting module 19 is communicated with a concentrated water reflux branch pipe 33 through a concentrated water side detachable butt joint interface 21; the fresh water return branch pipe 32 and the concentrated water return branch pipe 33 are communicated with the inlet of the backwashing water return circulation main pipe 24, and the outlet of the backwashing water return circulation main pipe 24 is communicated with the cleaning water tank 1; be equipped with fresh water side return-flow control valve 22 on the fresh water backward flow branch pipe 32, be equipped with concentrated water side return-flow control valve 23 on the concentrated water backward flow branch pipe 33, the entrance intercommunication of fresh water side return-flow control valve 22 has first blowdown branch pipe, the entrance intercommunication of concentrated water side return-flow control valve 23 has second blowdown branch pipe, wherein, be provided with fresh water side blowoff valve 26 on the first blowdown branch pipe, be provided with concentrated water side blowoff valve 25 on the second blowdown branch pipe, the export of first blowdown branch pipe and the export of second blowdown branch pipe are linked together with the entry in waste liquid pond.
The outlet of the cleaning water pump 3 is provided with a pressure gauge 6, the outlet of the cleaning water pump 3 is divided into two paths, one path is communicated with the inlet of the security filter 5 through a filter inlet valve 4, the other path is communicated with the inlet of the cleaning water tank 1 through a backwashing water bypass loop 7, and the backwashing water bypass loop 7 is provided with a bypass control valve 8; the upper part of the cleaning water tank 1 is provided with a sodium chloride dosing port 30, a dosing control valve 28 is arranged at the sodium chloride dosing port 30, a liquid level meter 29 is arranged on the cleaning water tank 1, and a cleaning water tank blow-off valve 27 is arranged at the bottom blow-off port of the cleaning water tank 1.
The filtering precision of the cartridge filter 5 is 1 μm, so as to prevent micro impurities in the cleaning solution from entering the electric desalting module 19 and avoid causing secondary blockage of the electric desalting module 19.
The utility model discloses a concrete operation process does:
connecting a detachable butt joint interface 18 of a water inlet pipe of a concentrated water chamber with a concentrated water discharge port of an electric desalting module 19, connecting a detachable butt joint interface 17 of a water inlet pipe of a fresh water chamber with a water production port of the electric desalting module 19, connecting a water inlet of the electric desalting module 19 with a detachable butt joint interface 20 at a water inlet side, and connecting a concentrated water replenishing port of the electric desalting module 19 with a detachable butt joint interface 21 at a concentrated water side;
injecting demineralized water into the cleaning water tank 1, then opening a water tank outlet valve 2, a bypass control valve 8, a filter inlet valve 4, a filter outlet valve 9, a fresh water chamber backwashing water inlet flow meter 13, a concentrated water chamber backwashing water inlet flow meter 14, a fresh water side blow-off valve 26 and a concentrated water side blow-off valve 25, opening a cleaning water pump 3, carrying out counter-current flushing on the system, and discharging the flushing water into a wastewater disposal basin so as to remove part of large-particle pollutants easy to flush.
The specific washing process is as follows:
the desalted water is divided into two paths after coming out of the cleaning water tank 1 and passing through the cleaning water pump 3, one path returns to the cleaning water tank 1 through the backwashing water bypass loop 7, the other path is divided into two paths after being filtered by the security filter 5, the other path enters the fresh water chamber from the water production port of the electric desalting module 19 through the fresh water chamber backwashing water inlet flowmeter 13 and the fresh water chamber water inlet regulating valve 15 on the fresh water chamber backwashing water inlet branch pipe 11, and the other path enters the concentrated water chamber from the concentrated water outlet of the electric desalting module 19 through the concentrated water chamber backwashing water inlet flowmeter 14 and the concentrated water chamber water inlet regulating valve 16; because the fresh water side reflux adjusting valve 22 and the concentrated water side reflux adjusting valve 23 are closed, the demineralized water cannot return to the cleaning water tank 1 from the fresh water reflux branch pipe 32 and the concentrated water reflux branch pipe 33, the demineralized water which has been washed out of the fresh water chamber comes out from the water inlet of the electric desalting module 19 and then enters the waste liquid tank through the first sewage branch pipe, and the demineralized water which has been washed out of the concentrated water chamber comes out from the concentrated water replenishing port of the electric desalting module 19 and then enters the waste liquid tank through the second sewage branch pipe.
After the washing is finished, the medicine adding control valve 28 is opened, and sodium chloride solution is added into the washing water tank 1 through the sodium chloride medicine adding port 30; and (3) preparing a cleaning solution with the concentration of 5% in the cleaning water tank 1, transforming the resin in the electric desalting module 19 by using sodium chloride, increasing the cleaning space, monitoring the change of the numerical value of the electric conductivity meter 34 in the transformation process, and indicating that the transformation is finished when the numerical value of the electric conductivity meter 34 is suddenly increased.
After the resin transformation is completed, the fresh water side blow-off valve 26 and the concentrated water side blow-off valve 25 are opened, demineralized water is injected into the cleaning water tank 1, the countercurrent cleaning process is repeated, and the granular dirt blocking objects in the gaps are thoroughly washed. The resin conductivity meter 34 was monitored and the end of the cleaning process for particulate contaminants throughout the system was indicated by a steady decrease in the value to around 0.2. mu.S/cm.
The utility model provides a backwash water bypass flow return circuit 7 can mix the washing liquid on the one hand, and on the other hand can also adjust the washing flow and improve the cleaning performance in the required best flow cleaning process through adjusting the aperture of exerting oneself and bypass control valve 8 that washs water pump 3, control. The fresh water chamber cleaning flow and the concentrated water chamber cleaning flow of the electric desalting module 19 are controlled to be about 9: 1.
When the cleaning time reaches a certain requirement, the cleaning liquid in the system is drained, and the whole system is flushed by desalted water after the cleaning liquid is drained until the effluent is neutral. And taking out the cleaned electric desalting module 19, installing the cleaned electric desalting module in an electric desalting system, and completing the regeneration of the resin of the electric desalting module 19 by electrifying and carrying out normal operation. The cleaning effect is judged by data of operation pressure, current, voltage and the like of the operation pressure difference of the electric desalting module 19, the operation current, voltage and the like of the electric desalting module 19. In addition, each connecting position can be detachably connected, and meanwhile, a movable support is arranged, so that the electric desalting module 19 is convenient to move, install and disassemble, and can be cleaned on site.
The utility model discloses adopt NaCl to carry out the transformation to the resin in the electric desalting module 19 for the first time to the increase washs more than the space 20%, thoroughly solves the problem that the dirty stifled thing cleaning efficiency of granule nature that electric desalting influent stream to narrow, the limited space that leads to the fact of washing is low. The resin is firstly transformed by utilizing the difference of swelling property of the resin after exchanging different ions, when the concrete cleaning operation is carried out, firstly, the electric desalting module 19 is washed by using desalted water in a countercurrent mode, then, sodium chloride solution is added into the cleaning water tank 1 through the sodium chloride feeding port 30, the sodium chloride solution with the concentration of 5% is prepared in the cleaning water tank 1, the cleaning solution reversely flows through the resin in the electric desalting module 19, the cation and anion resins in the electric desalting module 19 are transformed in a replacement mode, and the cation resin is transformed from the hydrogen mode to the sodium mode by utilizing the principle that the exchange swelling property sequence of the strong acid cation resin is that the hydrogen mode is larger than the sodium mode, so that the volume of the resin is reduced by 5% -8%. By utilizing the characteristic that the exchange swelling hydroxyl type of the strong-alkaline anion resin is larger than the chlorine type, the volume of the anion resin can be reduced by 15-20 percent by converting the hydroxyl type into the chlorine type. Therefore, adopt the sodium chloride to carry out the transformation to the resin in the electric desalting membrane module, can promote according to the experimental result and wash space 20% ~ 25% to increased and washd the space, recycled the demineralized water at last and carried out the backwash against current to electric desalting module 19, will gather and get rid of the dirty stifled thing of granule nature that is difficult to get rid of through conventional backwash inside electric desalting module 19, improve the cleaning performance. The washed electrodeionization module 19 is normally charged with demineralized water, and the regeneration process of converting the electrodeionization anion-cation resin into the hydrogen resin and the hydroxide resin from the sodium resin and the chloride resin respectively can be completed under the condition of electrification, so that the electrodeionization module is quick and convenient, and does not need extra regeneration liquid.
Still even have the backwash water bypass circuit 7 who takes bypass control valve 8 on wasing the delivery port of water tank 1, and backwash water bypass circuit 7 links to each other with the bypass entry of wasing water tank 1, consequently, the utility model discloses can control the relation of exerting oneself with the design of electric desalination module through the sum of the flow of the flowmeter on fresh water room backwash water inlet tube and the dense water room backwash water inlet tube of aperture through adjusting bypass control valve 8. Meanwhile, the cleaning liquid coming out of the cleaning water tank 1 returns to the cleaning water tank 1 through the backwashing water bypass loop 7, and the cleaning liquid in the cleaning water tank 1 can be fully mixed.
The utility model discloses still be provided with the cartridge filter 5 that the filter fineness is 1 mu m at the entrance of backwash water main pipe 31, can prevent like this that the particulate matter that the washing liquid carried in the washing journey from entering into electric desalting module 19, cause the dirty stifled of secondary of electric desalting module 19.
Claims (8)
1. A high-efficiency cleaning device for granular dirt blockage of an electric desalting device is characterized by comprising a cleaning water tank (1), a security filter (5), a backwashing water main pipe (31), a fresh water chamber backwashing water inlet branch pipe (11), a concentrated water chamber backwashing water inlet branch pipe (12), an electric desalting module (19), a fresh water return branch pipe (32), a concentrated water return branch pipe (33) and a backwashing water return circulation main pipe (24);
a sodium chloride dosing port (30) is arranged at the upper part of the cleaning water tank (1), the water outlet of the cleaning water tank (1) is communicated with a cartridge filter (5), and the water outlet of the cartridge filter (5) is communicated with a backwashing water main pipe (31); the backwashing main pipe (31) is respectively communicated with the inlet of the backwashing water inlet branch pipe (11) of the fresh water chamber and the inlet of the backwashing water inlet branch pipe (12) of the concentrated water chamber; the backwash water inlet branch pipe (11) of the fresh water chamber is communicated with a water production port of an electric desalting fresh water chamber in the electric desalting module (19); the back washing water inlet branch pipe (12) of the concentrated water chamber is communicated with a water outlet of an electric desalting concentrated water chamber in the electric desalting module (19);
an electric desalting water inlet of the electric desalting module (19) is communicated with the fresh water backflow branch pipe (32); an electric desalting concentrated water replenishing port of the electric desalting module (19) is communicated with a concentrated water reflux branch pipe (33); the fresh water return branch pipe (32) and the concentrated water return branch pipe (33) are communicated with the inlet of the backwashing water return circulation main pipe (24), and the outlet of the backwashing water return circulation main pipe (24) is communicated with the cleaning water tank (1); be equipped with fresh water side return-flow control valve (22) on fresh water backward flow branch pipe (32), be equipped with concentrated water side return-flow control valve (23) on concentrated water backward flow branch pipe (33), the entrance intercommunication of fresh water side return-flow control valve (22) has first blowdown branch pipe, the entrance intercommunication of concentrated water side return-flow control valve (23) has second blowdown branch pipe, wherein, be provided with fresh water side blowoff valve (26) on the first blowdown branch pipe, be provided with concentrated water side blowoff valve (25) on the second blowdown branch pipe.
2. The high-efficiency cleaning device for the particulate dirt blockage of the electric desalting device according to claim 1, wherein a water outlet of a cleaning water tank (1) is communicated with a security filter (5) through a water tank outlet valve (2), a cleaning water pump (3) and a filter inlet valve (4) in sequence, a filter blow-down valve (10) is arranged at the bottom of the security filter (5), and a water outlet of the security filter (5) is communicated with a backwashing main pipe (31) through a filter outlet valve (9).
3. The high-efficiency cleaning device for the granular sewage blockage of the electric desalting device according to claim 1, wherein a backwash water inlet branch pipe (11) of a fresh water chamber is communicated with a water production port of an electric desalting fresh water chamber in an electric desalting module (19) through a detachable butt joint interface (17) of a fresh water chamber inlet pipe; the back washing water inlet branch pipe (12) of the concentrated water chamber is communicated with a water outlet of an electric desalting concentrated water chamber in the electric desalting module (19) through a detachable butt joint interface (18) of a water inlet pipe of the concentrated water chamber.
4. The high-efficiency cleaning device for the granular dirt blockage of the electric desalting device according to claim 1, wherein a fresh water chamber backwashing water inlet flow meter (13) and a fresh water chamber water inlet regulating valve (15) are arranged on a fresh water chamber backwashing water inlet branch pipe (11);
a back washing water inlet flow meter (14) of the concentrated water chamber and a water inlet regulating valve (16) of the concentrated water chamber are arranged on the back washing water inlet branch pipe (12) of the concentrated water chamber.
5. The high-efficiency cleaning device for the granular dirt blockage of the electric desalting device according to the claim 1, characterized in that an electric desalting water inlet of an electric desalting module (19) is communicated with a fresh water backflow branch pipe (32) through a detachable butt joint interface (20) at a water inlet side;
an electric desalting concentrated water replenishing port of the electric desalting module (19) is communicated with a concentrated water reflux branch pipe (33) through a concentrated water side detachable butt joint interface (21).
6. The efficient cleaning device for the particulate fouling of the electric desalting device according to claim 1, further comprising a waste liquid pool, wherein the outlet of the first sewage branch pipe and the outlet of the second sewage branch pipe are communicated with the inlet of the waste liquid pool.
7. The high-efficiency cleaning device for the granular dirt blockage of the electric desalting device according to claim 2, characterized in that a pressure gauge (6) is arranged at an outlet of the cleaning water pump (3), the outlet of the cleaning water pump (3) is divided into two paths, one path is communicated with an inlet of a security filter (5) through a filter inlet valve (4), the other path is communicated with an inlet of a cleaning water tank (1) through a backwashing water bypass loop (7), and a bypass control valve (8) is arranged on the backwashing water bypass loop (7).
8. The high-efficiency cleaning device for the granular dirt blockage of the electric desalting device according to claim 1, characterized in that a medicine adding control valve (28) is arranged at a sodium chloride medicine adding port (30), a liquid level meter (29) is arranged on the cleaning water tank (1), and a cleaning water tank blow-down valve (27) is arranged at a bottom blow-down port of the cleaning water tank (1).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111847603A (en) * | 2020-08-10 | 2020-10-30 | 西安西热水务环保有限公司 | A high-efficiency cleaning device and method for particulate fouling of an electric desalination device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111847603A (en) * | 2020-08-10 | 2020-10-30 | 西安西热水务环保有限公司 | A high-efficiency cleaning device and method for particulate fouling of an electric desalination device |
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