CN113562895A

CN113562895A - Modular efficient water treatment system

Info

Publication number: CN113562895A
Application number: CN202111047507.9A
Authority: CN
Inventors: 徐斌; 王元森; 吴军明; 杨永军
Original assignee: BEIJING INNOGREEN TECHNOLOGY CO LTD
Current assignee: BEIJING INNOGREEN TECHNOLOGY CO LTD
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2021-10-29

Abstract

The invention discloses a modularized high-efficiency water treatment system, comprising a pretreatment module, an integrated primary reverse osmosis module, an integrated secondary reverse osmosis module and an integrated EDI module. The pretreatment module includes a raw water tank, a raw water pump, and a heat exchanger. , Multi-media filter and activated carbon filter and integrated ultrafiltration module, the integrated first-stage reverse osmosis module includes a first-stage reverse osmosis security filter, a first-stage reverse osmosis high-pressure pump and a first-stage reverse osmosis device that are connected in sequence. The equipment in the process section is integrated into skid-mounted sets according to the process route, which can be disassembled and assembled at will, with flexible configuration, convenient installation and debugging, and the equipment has a compact structure, small footprint, light weight, easy transportation, installation and debugging. The quality of concentrated water is analyzed, and according to the characteristics of water quality, combined with the water quality requirements of the equipment in each process section of the system, it can be recycled and reused, so as to reduce operating costs and waste water discharge. The advantages of modularization, high efficiency, and high utilization of water resources are obvious.

Description

Modular efficient water treatment system

Technical Field

The invention belongs to the technical field related to water treatment, and particularly relates to a modular efficient water treatment system.

Background

The water for removing (removing) salt water in a boiler in the power industry, the water for the electronic industry, the water for the pharmaceutical industry, the process water for the chemical industry, the water for the food industry, the seawater and the brackish water are desalted, and the water for other processes is as follows: automobile, home appliance coating, coated glass, chemical products, fine chemicals and other industries.

At present, ion exchange and membrane treatment processes are mostly adopted in the brine removal (dehydration) process, and qualified brine removal (dehydration) can be prepared by both process routes.

The ion exchange capacity of the ion exchange resin used in the desalting process is limited to a certain extent, and the water quality fluctuates periodically; organic substances may be dissolved out of the resin; the proliferation of microorganisms can be generated on the surface of the resin; the resin crumbles causing water to build up as particles and risk entering subsequent systems; meanwhile, acid and alkali regenerants are used for resin regeneration, and the regeneration wastewater needs to be subjected to regeneration treatment; the system occupies a large area and the workload of system operation and maintenance is large.

The membrane water treatment process is a water treatment process which organically combines different membrane processes such as ultrafiltration, microfiltration, reverse osmosis, EDI and the like together to achieve the purposes of efficiently removing pollutants and deeply desalting. Compared with the traditional ion exchange desalting process, the process has the advantages of stable effluent quality, small workload of system operation balance maintenance and no generation of acid and alkali wastewater. However, the traditional membrane water treatment process has the problems of dispersed equipment, large workload of field installation and debugging and operation and maintenance, large amount of concentrated water generated due to the characteristics of a membrane system, low recovery rate of a system with large discharge pressure and the like.

At present, resource shortage and water environment pollution become important factors restricting the sustainable development of economy in China, and brine removal (dehydration) treatment processes are various and mature day by day. There is still room for improvement in integrating system equipment as much as possible to reduce the workload of the system during manufacture, transportation, installation and operation and to increase the water recovery rate of the system to a greater extent.

Disclosure of Invention

The invention aims to provide a modular high-efficiency water treatment system to solve the problems of large occupied area of the system, large workload of system operation and maintenance and low recovery rate of the system with large concentrated water quantity in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a modular high-efficiency water treatment system comprises a pretreatment module, an integrated primary reverse osmosis module, an integrated secondary reverse osmosis module and an integrated EDI module, wherein the pretreatment module comprises a raw water tank, a raw water pump, a heat exchanger, a multi-medium filter, an activated carbon filter and an integrated ultrafiltration module;

the integrated first-stage reverse osmosis module comprises a first-stage reverse osmosis cartridge filter, a first-stage reverse osmosis high-pressure pump and a first-stage reverse osmosis device which are sequentially communicated;

the integrated secondary reverse osmosis module comprises a secondary reverse osmosis cartridge filter, a secondary reverse osmosis high-pressure pump and a secondary reverse osmosis device;

the integrated EDI module comprises a three-level security filter and an EDI device;

the raw water in the raw water tank is boosted by a raw water pump and then heated by a heat exchanger to enter a multi-media filter and an active carbon filter for filtering, the filtered produced water enters an integrated ultrafiltration module to remove impurities, the salt in the water is removed by the integrated primary reverse osmosis module and the integrated secondary reverse osmosis module, the produced water treated by the integrated EDI module enters a desalting water tank, and the produced water is boosted by a desalting water pump and sent out;

the system also comprises a dosing device and a cleaning device which are matched for use, and equipment in the system is subjected to dosing backwashing and air washing through the dosing device and the cleaning device.

Preferably, the integrated ultrafiltration module comprises a self-cleaning lamination filter and an ultrafiltration device.

Preferably, the pretreatment module is communicated with the integrated first-stage reverse osmosis module in sequence through an ultrafiltration water production tank and a first-stage reverse osmosis booster pump.

Preferably, the integrated primary reverse osmosis module is communicated with the integrated secondary reverse osmosis module in sequence through a primary reverse osmosis water production tank and a secondary reverse osmosis booster pump, concentrated water generated by the integrated primary reverse osmosis module flows back to the concentrated water tank, and the concentrated water in the concentrated water tank enters the integrated ultrafiltration module for backwashing after being boosted by the filter backwashing pump.

Preferably, the integrated second-stage reverse osmosis module is communicated with the integrated EDI module in sequence through a second-stage reverse osmosis water production tank and an EDI water supply pump.

Preferably, the integrated EDI module is boosted by a demineralized water tank and a demineralized water pump and sent to a water consumption point.

Preferably, the dosing device comprises a flocculating agent dosing device, a coagulant dosing device, a bactericide dosing device, an acid dosing device, an alkali dosing device, a reducing agent dosing device and a scale inhibitor dosing device;

the chemicals of the flocculating agent dosing device, the coagulant dosing device and the bactericide dosing device are added into the pretreatment module through a first pipeline mixer;

the agents of the bactericide dosing device, the acid dosing device and the alkali dosing device enter the ultrafiltration device through the second pipeline mixer;

the chemicals of the reducing agent dosing device and the scale inhibitor dosing device enter the integrated first-stage reverse osmosis module through a third pipeline mixer;

and the medicament of the alkali dosing device enters the integrated secondary reverse osmosis module through the fourth pipeline mixer.

Preferably, the cleaning device comprises an ultrafiltration cleaning device, a reverse osmosis/EDI cleaning device and a compressed air system;

the ultrafiltration cleaning device is used for chemically cleaning the integrated ultrafiltration module;

the reverse osmosis/EDI cleaning device is used for chemically cleaning the integrated first-stage reverse osmosis module, the integrated second-stage reverse osmosis module and the integrated EDI module;

the water produced in the ultrafiltration water production tank is boosted by an ultrafiltration backwashing water pump and then is merged with the medicament in the second pipeline mixer to enter an ultrafiltration device;

and the compressed air system performs air washing on the multi-medium filter, the activated carbon filter and the ultrafiltration device.

Compared with the prior water treatment technology, the invention provides a modular high-efficiency water treatment system, which has the following beneficial effects:

1. the equipment at each process section of the water treatment system is segmented and integrated into a skid-mounted set according to the process route and the equipment characteristics, can be randomly disassembled and assembled, is flexible in configuration, convenient to install and debug, compact in equipment structure, small in occupied space, light in weight and convenient to transport, install and debug;

2. the invention can realize the complete connection of the equipment main body, the process pipeline and the electric automatic control system of the equipment in the module in a factory, can debug the equipment monomer in the module during working, can integrally install the equipment in place after the equipment arrives at the site, only needs to connect an external interface, greatly reduces the workload of site installation and debugging, and effectively shortens the time required by the site;

3. the invention has stable effluent quality, small workload of system operation balance maintenance and no generation of acid and alkali wastewater;

4. the water treatment system of the invention carries out water quality analysis on concentrated water of each section in a targeted manner, and the concentrated water is respectively recycled according to the water quality characteristics and the water inlet quality requirements of equipment of each process section of the system, thereby greatly reducing the operation cost and the wastewater discharge;

5. the invention enables concentrated water which is generated after the conventional membrane method water treatment system operates and needs to be discharged to other places for water inlet secondary treatment to return to the system, the water recovery rate of a system which needs less raw water entering the system in a salt removing (desalting) system finally generating the same water quantity is higher, the water recovery rate of the system can be improved to more than 65 percent from 46 to 52 percent of the conventional membrane method water treatment system, and the environmental protection and the high-efficiency utilization of water resources are facilitated;

6. the system is modularized and efficient, and has obvious advantages of high utilization rate of water resources.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:

FIG. 1 is a schematic flow diagram of a modular high efficiency water treatment system according to the present invention;

FIG. 2 is a schematic diagram of a backwash flow of the integrated primary reverse osmosis module according to the present invention;

FIG. 3 is a schematic diagram of a concentrated water reflux flow of the integrated secondary reverse osmosis module and the integrated EDI module according to the present invention;

FIG. 4 is a schematic view of the chemical washing process of the pretreatment module, the integrated primary reverse osmosis module and the integrated secondary reverse osmosis module according to the present invention;

FIG. 5 is a schematic diagram of a chemical cleaning process for the pretreatment module, the integrated primary reverse osmosis module, and the integrated EDI module according to the present invention;

FIG. 6 is a schematic view of a gas washing process of the pretreatment module and the integrated primary reverse osmosis module according to the present invention;

in the figure: 100. an integrated ultrafiltration module; 200. integrating a first-stage reverse osmosis module; 300. integrating a secondary reverse osmosis module; 400. integrating the EDI module; 1. a raw water tank; 2. a raw water pump; 3. a heat exchanger; 4. a first line mixer; 5. a multi-media filter; 6. an activated carbon filter; 7. a self-cleaning lamination filter; 8. a second line mixer; 9. an ultrafiltration device; 10. an ultrafiltration water production tank; 11. a first-stage reverse osmosis booster pump; 12. an ultrafiltration backwashing water pump; 13. a third line mixer; 14. a first-stage reverse osmosis cartridge filter; 15. a first-stage reverse osmosis high-pressure pump; 16. a first-stage reverse osmosis device; 17. a first-stage reverse osmosis water production tank; 18. a secondary reverse osmosis booster pump; 19. a fourth line mixer; 20. a secondary reverse osmosis cartridge filter; 21. a second-stage reverse osmosis high-pressure pump; 22. a secondary reverse osmosis device; 23. a secondary reverse osmosis water production tank; 24. an EDI water supply pump; 25. a three-stage cartridge filter; 26. an EDI device; 27. a demineralized water tank; 28. a demineralized water pump; 29. a concentrated water tank; 30. a filter backwash pump; 31. a compressed air system; 32. a flocculating agent dosing device; 33. a coagulant dosing device; 34. a bactericide adding device; 35. an acid dosing device; 36. an alkali dosing device; 37. a reducing agent dosing device; 38. a scale inhibitor dosing device; 39. an ultrafiltration cleaning device; 40. reverse osmosis/EDI cleaning device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a modularized high-efficiency water treatment system comprises a pretreatment module, the pretreatment module comprises a raw water tank 1, a raw water pump 2, a heat exchanger 3, a multi-medium filter 5, an activated carbon filter 6 and an integrated ultrafiltration module 100, the integrated ultrafiltration module 100 comprises a self-cleaning laminated filter 7 and an ultrafiltration device 9, the pretreatment module is sequentially communicated with an integrated primary reverse osmosis module 200 through an ultrafiltration product water tank 10 and a primary reverse osmosis booster pump 11, the integrated primary reverse osmosis module 200 comprises a primary reverse osmosis safety filter 14, a primary reverse osmosis high-pressure pump 15 and a primary reverse osmosis device 16 which are sequentially communicated, raw water in the raw water tank 1 is boosted through the raw water pump 2 and then enters the multi-medium filter 5 and the activated carbon filter 6 through the heat exchanger 3 to be filtered, and filtered product water enters the integrated ultrafiltration module 100 to remove silt, suspended matters, organic matters and colloid in the water, meanwhile, the turbidity and the chromaticity of the water body can be reduced, the water quality is purified, the heat exchanger 3 heats the raw water of the system to ensure that the outlet water meets the requirement of the inlet water temperature of a subsequent system, the self-cleaning laminated filter 7 and the ultrafiltration device 9 are integrated into a skid-mounted set by the integrated ultrafiltration module 100, and a CEB dosing device and a CIP cleaning device are correspondingly arranged to recover the performance of the integrated ultrafiltration module 100.

It should be noted that the water produced by the pretreatment module enters the integrated ultrafiltration product water tank 10, is boosted by the primary reverse osmosis booster pump 11 and then enters the integrated primary reverse osmosis module 200 for primary desalting, the water produced by the integrated primary reverse osmosis module 200 enters the primary reverse osmosis product water tank 17, is boosted by the secondary reverse osmosis booster pump 18 and then enters the integrated secondary reverse osmosis module 300 for secondary desalting, the water produced by the integrated secondary reverse osmosis module 300 enters the secondary reverse osmosis product water tank 23, is boosted by the EDI water supply pump 24 and then enters the integrated EDI module 400 for tertiary desalting, the salt in the water is removed by the integrated primary reverse osmosis module 200 and the integrated secondary reverse osmosis module 300, the water produced by the integrated EDI module 400 enters the desalting water tank 27, is boosted by the desalting pump 28 and then is sent, and the integrated primary reverse osmosis cartridge filter 14 is driven by the integrated primary reverse osmosis module 200, The integrated skid-mounted complete set of the first-stage reverse osmosis high-pressure pump 15 and the first-stage reverse osmosis device 16 is provided with a corresponding dosing device and a corresponding cleaning device to enable inlet water to meet the inlet water requirement of the first-stage reverse osmosis device 16, delay the scaling trend of membrane elements and recover the performance of the integrated first-stage reverse osmosis module 200, and concentrated water of water produced by the integrated first-stage reverse osmosis module 200 is recycled by a concentrated water tank 29 and is used for backwashing the multi-media filter 5 and the activated carbon filter 6 in pretreatment, so that the recovery rate of the system is improved by recycling the concentrated water.

It is worth understanding that the integrated secondary reverse osmosis module 300 comprises a secondary reverse osmosis cartridge filter 20, a secondary reverse osmosis high-pressure pump 21 and a secondary reverse osmosis device 22, the integrated primary reverse osmosis module 200 is sequentially communicated with the integrated secondary reverse osmosis module 300 through a primary reverse osmosis water production tank 17 and a secondary reverse osmosis booster pump 18, concentrated water generated by the integrated primary reverse osmosis module 200 flows back to a concentrated water tank 29, concentrated water in the concentrated water tank 29 is boosted by a filter reverse osmosis pump 30 and then enters the integrated ultrafiltration module 100 for backwashing, the integrated secondary reverse osmosis module 300 integrates the secondary reverse osmosis cartridge filter 20, the secondary reverse osmosis high-pressure pump 21 and the secondary reverse osmosis device 22 into a skid set, a corresponding dosing device is arranged for water inflow to increase the PH value of inflow water so as to meet the water inflow requirement of the secondary reverse osmosis device 22, a cleaning device is arranged to recover the performance of the integrated secondary reverse osmosis module 300, concentrated water generated by the integrated secondary reverse osmosis module 300 is recovered to the secondary reverse osmosis water production tank 23, the concentrated water is recycled, and the recovery rate of the system is improved.

It should be noted that integrated EDI module 400 includes tertiary cartridge filter 25 and EDI device 26, integrated second grade reverse osmosis module 300 produces water tank 23 and EDI working shaft 24 and integrated EDI module 400 through second grade reverse osmosis and communicates in proper order, integrated EDI module 400 steps up through demineralized water tank 27 and demineralized water pump 28 and sends to the water point outward, integrated EDI module 400 is with tertiary cartridge filter 25 and the integrated sled dress complete set of EDI device 26, set up belt cleaning device in order to resume integrated EDI device 26 module performance, the produced dense water of integrated EDI module 400 is retrieved to first grade reverse osmosis and is produced water tank 17, make dense water recycle improve the system rate of recovery, demineralized water tank 27 and demineralized water pump 28 set up corresponding charge device, adjust the PH value, make it reach the requirement of water point PH value to go out water.

Further, the system also comprises a dosing device and a cleaning device which are matched for use, and dosing backwashing and air washing are carried out on equipment in the system through the dosing device and the cleaning device, so that the filtering performance is ensured.

The dosing devices comprise a flocculating agent dosing device 32, a coagulant dosing device 33, a bactericide dosing device 34, an acid dosing device 35, an alkali dosing device 36, a reducing agent dosing device 37 and a scale inhibitor dosing device 38;

the chemicals of the flocculating agent dosing device 32, the coagulant dosing device 33 and the bactericide dosing device 34 are added into a raw water pipeline in the pretreatment module through the first pipeline mixer 4, are mixed to the multi-media filter 5 and the activated carbon filter 6, and are subjected to chemical washing on the multi-media filter 5 and the activated carbon filter 6, and suspended matters, organic matters, colloids and the like in the raw water are coagulated into large-particle alum flowers by applying a micro-flocculation process so as to be effectively removed in the multi-media filter 5 and the activated carbon filter 6, and meanwhile, the bactericide is used for inhibiting the breeding of microorganisms, viruses and the like;

the medicaments of the bactericide dosing device 34, the acid dosing device 35 and the alkali dosing device 36 enter the ultrafiltration device 9 through the second pipeline mixer 8, dirt inside the ultrafiltration device 9 is treated, and backwashing treatment on the dirt inside the ultrafiltration device 9 is facilitated by adjusting the pH value inside the ultrafiltration device 9;

the reducing agent dosing device 37 and the antisludging agent dosing device 38 enter the integrated first-stage reverse osmosis module 200 through the third pipeline mixer 13, the reducing agent added by the reducing agent dosing device 37 can eliminate oxidizing substances remained in the pretreatment so as to prevent the reverse osmosis membrane from losing the desalting function due to oxidation of an oxidizing agent after passing through the first-stage reverse osmosis cartridge filter 14, the first-stage reverse osmosis high-pressure pump 15 and the first-stage reverse osmosis device 16 in the first-stage reverse osmosis module 200, and the antisludging agent added by the antisludging agent dosing device 38 is crystallized and precipitated in order to prevent the concentration products of CaCO3 and CaCO4 from being larger than the equilibrium solubility index of the CaCO3 and the CaCO4 on the concentrate side, particularly the concentrate side of the last group of RO pressure vessels, so that the application characteristics of membrane elements are damaged;

the chemicals of the alkali chemical adding device 36 enter the integrated secondary reverse osmosis module 300 through the fourth pipeline mixer 19, and can sequentially flow through the secondary reverse osmosis cartridge filter 20, the secondary reverse osmosis high-pressure pump 21 and the secondary reverse osmosis device 22 in the secondary reverse osmosis module 300 to perform alkali neutralization, so that acidic dirt in the secondary reverse osmosis cartridge filter 20, the secondary reverse osmosis high-pressure pump 21 and the secondary reverse osmosis device 22 can be conveniently treated.

Further, the cleaning apparatus includes an ultrafiltration cleaning apparatus 39 and a reverse osmosis/EDI cleaning apparatus 40 and a compressed air system 31;

the ultrafiltration cleaning device 39 chemically cleans the integrated ultrafiltration module 100, and after passing through the self-cleaning laminated filter 7 and the ultrafiltration device 9, recovers the membrane system performance in the self-cleaning laminated filter 7 and the ultrafiltration device 9, thereby maintaining the filtration performance;

the reverse osmosis/EDI cleaning device 40 is used for chemically cleaning the integrated first-stage reverse osmosis module 200, the integrated second-stage reverse osmosis module 300 and the integrated EDI module 400, the reverse osmosis/EDI cleaning device 40 is respectively communicated with the inner pipelines of the integrated first-stage reverse osmosis module 200, the integrated second-stage reverse osmosis module 300 and the integrated EDI module 400, and equipment in the integrated first-stage reverse osmosis module 200, the integrated second-stage reverse osmosis module 300 and the integrated EDI module 400 is cleaned to recover the membrane system performance of the equipment;

the produced water in the ultrafiltration product water tank 10 is boosted by an ultrafiltration backwashing water pump 12, is converged with the medicament in the second pipeline mixer 8, enters the ultrafiltration device 9, can be subjected to CEB (continuous enhanced-absorption-B) medicament adding backwashing on the ultrafiltration device 9 along with mixing to recover partial performance of the ultrafiltration device 9, and the produced water of the ultrafiltration device 9 enters the ultrafiltration product water tank 10, is boosted by a primary reverse osmosis booster pump 11 and then enters a primary reverse osmosis module 200;

the compressed air system 31 performs air washing on the multimedia filter 5, the activated carbon filter 6 and the ultrafiltration device 9, and high-pressure air is input to the multimedia filter 5, the activated carbon filter 6 and the ultrafiltration device 9 through the compressed air system 31, so that dirt attached to the inside of the multimedia filter 5, the activated carbon filter 6 and the ultrafiltration device 9 is removed, and the filtering performance of the multimedia filter 5, the activated carbon filter 6 and the ultrafiltration device 9 is restored.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. a modularized high-efficiency water treatment system, comprising a pretreatment module, an integrated first-level reverse osmosis module (200), an integrated second-level reverse osmosis module (300) and an integrated EDI module (400), characterized in that: the pretreatment The processing module includes a raw water tank (1), a raw water pump (2), a heat exchanger (3), a multi-media filter (5), an activated carbon filter (6) and an integrated ultrafiltration module (100);

The integrated primary reverse osmosis module (200) includes a primary reverse osmosis security filter (14), a primary reverse osmosis high-pressure pump (15) and a primary reverse osmosis device (16) that are communicated in sequence;

The integrated secondary reverse osmosis module (300) comprises a secondary reverse osmosis security filter (20), a secondary reverse osmosis high pressure pump (21) and a secondary reverse osmosis device (22);

The integrated EDI module (400) includes a three-level security filter (25) and an EDI device (26);

The raw water in the raw water tank (1) is pressurized by the raw water pump (2) and then heated up by the heat exchanger (3) to enter the multi-media filter (5) and the activated carbon filter (6) for filtration, and the filtered water enters the The impurities are removed in the integrated ultrafiltration module (100), the salt in the water is removed by the integrated primary reverse osmosis module (200) and the integrated secondary reverse osmosis module (300), and the product processed by the integrated EDI module (400) The water enters the demineralized water tank (27), and is boosted by the demineralized water pump (28) and sent out;

The system also includes a dosing device and a cleaning device that are used together, and the equipment in the system is backwashed and air-washed by the dosing device and the cleaning device.

2. A modular high-efficiency water treatment system according to claim 1, characterized in that: the integrated ultrafiltration module (100) comprises a self-cleaning laminated filter (7) and an ultrafiltration device (9).

3. A modular high-efficiency water treatment system according to claim 2, characterized in that: the pretreatment module is integrated with an ultrafiltration water production tank (10), a primary reverse osmosis booster pump (11) and an integrated primary The reverse osmosis modules (200) are connected in sequence.

4. A modularized high-efficiency water treatment system according to claim 3, characterized in that: the integrated primary reverse osmosis module (200) is pressurized by a primary reverse osmosis water production tank (17) and a secondary reverse osmosis The pump (18) is communicated with the integrated secondary reverse osmosis module (300) in sequence, and the concentrated water generated by the integrated primary reverse osmosis module (200) is returned to the concentrated water tank (29), and the concentrated water in the concentrated water tank (29) is returned. The water is boosted by the filter backwash pump (30) and then enters the integrated ultrafiltration module (100) for backwashing.

5. A modularized high-efficiency water treatment system according to claim 4, characterized in that: the integrated secondary reverse osmosis module (300) passes through the secondary reverse osmosis water production tank (23) and the EDI water supply pump (24) In turn communicates with the integrated EDI module (400).

6. A modularized high-efficiency water treatment system according to claim 5, characterized in that: the integrated EDI module (400) is boosted by a demineralized water tank (27) and a demineralized water pump (28) and sent to water point.

7. A modular high-efficiency water treatment system according to claim 6, wherein the dosing device comprises a flocculant dosing device (32), a coagulant dosing device (33), a bactericide dosing device (33), and a a chemical dosing device (34), an acid dosing device (35), an alkali dosing device (36), a reducing agent dosing device (37) and a scale inhibitor dosing device (38);

The medicaments of the flocculant dosing device (32), the coagulant dosing device (33) and the bactericide dosing device (34) are added into the pretreatment module through the first pipeline mixer (4);

The medicaments of the bactericide dosing device (34), the acid dosing device (35) and the alkali dosing device (36) enter the ultrafiltration device (9) through the second pipeline mixer (8);

The medicaments of the reducing agent dosing device (37) and the scale inhibitor dosing device (38) enter the integrated primary reverse osmosis module (200) through the third pipeline mixer (13);

The medicament of the alkali dosing device (36) enters the integrated secondary reverse osmosis module (300) through the fourth pipeline mixer (19).

8. A modular high-efficiency water treatment system according to claim 1, wherein the cleaning device comprises an ultrafiltration cleaning device (39), a reverse osmosis/EDI cleaning device (40) and a compressed air system (31) );

The ultrafiltration cleaning device (39) chemically cleans the integrated ultrafiltration module (100);

The reverse osmosis/EDI cleaning device (40) chemically cleans the integrated primary reverse osmosis module (200), the integrated secondary reverse osmosis module (300) and the integrated EDI module (400);

The water produced in the ultrafiltration water production tank (10) is boosted by the ultrafiltration backwash water pump (12) to join the medicament in the second pipeline mixer (8) and enter the ultrafiltration device (9);

The compressed air system (31) performs air washing on the multi-media filter (5), the activated carbon filter (6) and the ultrafiltration device (9).