CN114735866A - Reclaimed water recycling treatment system - Google Patents
Reclaimed water recycling treatment system Download PDFInfo
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- CN114735866A CN114735866A CN202210294924.1A CN202210294924A CN114735866A CN 114735866 A CN114735866 A CN 114735866A CN 202210294924 A CN202210294924 A CN 202210294924A CN 114735866 A CN114735866 A CN 114735866A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 238000004064 recycling Methods 0.000 title abstract description 13
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 70
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 51
- 239000002351 wastewater Substances 0.000 claims abstract description 23
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 63
- 238000011001 backwashing Methods 0.000 claims description 32
- 230000000844 anti-bacterial effect Effects 0.000 claims description 18
- 239000003899 bactericide agent Substances 0.000 claims description 18
- 239000002253 acid Substances 0.000 claims description 17
- 239000003513 alkali Substances 0.000 claims description 13
- 239000002455 scale inhibitor Substances 0.000 claims description 12
- 230000001590 oxidative effect Effects 0.000 claims description 9
- 239000002585 base Substances 0.000 claims description 6
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 6
- 239000012498 ultrapure water Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000000451 chemical ionisation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000005406 washing Methods 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000010791 domestic waste Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
- C02F1/4695—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis electrodeionisation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/70—Treatment of water, waste water, or sewage by reduction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/30—Relating to industrial water supply, e.g. used for cooling
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a reclaimed water recycling treatment system which comprises an acid-base wastewater neutralization buffer tank, a plurality of security filters, a softener, a primary reverse osmosis system, a secondary reverse osmosis system, a tertiary reverse osmosis system and an EDI water treatment system. According to the application, the reclaimed water is effectively recycled through the ultrafiltration system, the first-stage partial osmosis system, the second-stage reverse osmosis system, the third-stage reverse osmosis system and the EDI system, and different ports are formed according to the requirements of different water qualities, so that the reclaimed water is more economically and effectively recycled; in addition, in the whole reclaimed water recovery and treatment process, the automation degree is high, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a reclaimed water recycling treatment system.
Background
The conventional reclaimed water recycling technology is characterized in that after residential domestic waste and sewage (bath, washing, clothes washing, kitchens and toilets) of residential communities are treated in a centralized manner, the residential domestic waste and the sewage reach certain standards and are recycled for greening irrigation, vehicle flushing, road flushing, household toilet flushing and the like of the residential communities, so that the purpose of saving water is achieved, and along with the deep research on reclaimed water recycling, the treated reclaimed water is applied to the deep treatment of reclaimed water in a thermal power plant. The advanced treatment of reclaimed water is the most fundamental means for alleviating the problems of corrosion, scaling and microorganism breeding, and different processes are generally required to be combined to ensure the stable operation of a system due to the complexity of the quality of the reclaimed water and the strictness of the water standard. The process flow is usually a 'pretreatment-main process (-advanced treatment'), and simultaneously combines a scale inhibition and sterilization process to ensure the stability of the system and the quality of produced water, but in a reclaimed water recycling treatment system, the wastewater treatment range is single, and the whole system is inconvenient to adjust and replace.
Disclosure of Invention
The invention aims to provide a reclaimed water recycling treatment system, which solves the problems of the conventional reclaimed water recycling treatment system in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a reclaimed water recycling treatment system, which comprises the following steps that firstly, diluted acid and alkali recycling wastewater is sent into an acid and alkali wastewater neutralization buffer tank through a pipe fitting, wherein the acid and alkali wastewater neutralization buffer tank is communicated with a NaOH dosing tank through a NaOH dosing pump and the pipe fitting so as to stir and neutralize the recycling wastewater;
the wastewater after neutralization treatment enters a raw water tank, wherein raw water in the raw water tank is sent to a security filter through a raw water pump, and then is conveyed to an ultrafiltration system for treatment after passing through the security filter;
the ultrafiltration water treated by the ultrafiltration system enters an ultrafiltration water tank, wherein the water in the ultrafiltration water tank is conveyed to a softener through a primary conveying pump for softening treatment, and the softener is communicated with a softener backwashing pump and a salt tank;
the softened water enters a first-stage cartridge filter, wherein the first-stage cartridge filter is communicated with a scale inhibitor dosing pump and a non-oxidation type bactericide dosing pump;
the water treated by the first-stage cartridge filter is conveyed to a first-stage reverse osmosis system by a first-stage reverse osmosis high-pressure pump, and the water treated by the first-stage reverse osmosis system is conveyed to a reverse osmosis water production tank;
the water in the reverse osmosis water production tank is conveyed to a secondary security filter through a secondary conveying pump, then enters a secondary reverse osmosis system, and the water subjected to secondary reverse osmosis treatment enters a secondary reverse osmosis water tank; wherein the secondary cartridge filter is communicated with a NaOH dosing pump, and concentrated water of the secondary reverse osmosis system is conveyed to the ultrafiltration water tank;
the water in the second-stage reverse osmosis water tank is conveyed to a third-stage cartridge filter through a third-stage conveying pump, the water treated by the third-stage cartridge filter enters a third-stage reverse osmosis system, and the water treated by the third-stage reverse osmosis is conveyed to a third-stage reverse osmosis water tank; the three-stage cartridge filter is communicated with a NaOH dosing pump through a pipeline, and concentrated water of the three-stage reverse osmosis system is conveyed to the reverse osmosis water tank;
water in the three-stage reverse osmosis water tank enters a UV sterilizer through an EDI (electro-chemical ionization) delivery pump, wherein the sterilized water enters an EDI system after being treated by a precision filter, the water treated by the EDI system enters a high-purity water tank, and the water in the high-purity water tank passes through a TOC remover and a mixing bed and finally enters a terminal filter; and concentrated water of the EDI system is conveyed to the reverse osmosis water tank through a conveying pump.
In this embodiment, further optimization, the ultrafiltration system, the first-stage partial osmosis system, the second-stage reverse osmosis system, the third-stage reverse osmosis system, and the EDI system are respectively communicated with the CPI washing tank through a washing pump to perform backwashing.
In this embodiment, it is further optimized that the ultrafiltration system is communicated with an ultrafiltration backwashing system, and the ultrafiltration backwashing system includes a compressed air system.
In this embodiment, further optimization is performed, and the produced water of the secondary reverse osmosis system is supplied to the NaOH dosing tank, the acid dosing tank, and the NaClO dosing tank through pipe fittings.
In the embodiment, the method is further optimized, wherein the NaOH dosing tank is used for dosing the acid-base wastewater neutralization buffer tank through a NaOH dosing pump; the backwashing alkali is provided for the ultrafiltration system by an ultrafiltration backwashing alkali dosing pump;
the acid dosing tank provides backwashing acid for the ultrafiltration system through an ultrafiltration backwashing acid dosing pump;
the NaClO dosing tank provides a bactericide for backwashing for the ultrafiltration system through an ultrafiltration backwashing bactericide dosing pump.
In this embodiment, the water production of the secondary reverse osmosis system is further optimized and communicated with NaHSO through pipelines3A dosing tank, a non-oxidizing bactericide dosing tank, and a scale inhibitor dosing tank.
In this embodiment, the NaHSO is further optimized3Dosing chest through NaHSO3The dosing pump and the pipe fitting provide reducing agent for the softener; the non-oxidizing bactericide dosing box supplies dosing to the primary cartridge filter through a non-oxidizing bactericide dosing pump; and the scale inhibitor dosing box supplies dosing for the primary cartridge filter through a scale inhibitor dosing pump.
Compared with the prior art, the invention has the beneficial technical effects that: according to the application, the reclaimed water is effectively recycled through the ultrafiltration system, the first-stage partial osmosis system, the second-stage reverse osmosis system, the third-stage reverse osmosis system and the EDI system, and different ports are formed according to the requirements of different water qualities, so that the reclaimed water is more economically and effectively recycled; in addition, in the whole reclaimed water recovery and treatment process, the automation degree is high, and the production efficiency is improved.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1 is a schematic view of the main body of the system for recycling water according to the present invention.
Detailed Description
As shown in fig. 1, in this embodiment, a reclaimed water recycling treatment system is disclosed, first, dilute acid/alkali recycled wastewater is sent to an acid-alkali wastewater neutralization buffer tank through a pipe, wherein the acid-alkali wastewater neutralization buffer tank is communicated with a NaOH dosing tank through a NaOH dosing pump and the pipe, so as to stir and neutralize the recycled wastewater;
in this embodiment, the recycled wastewater may be acidic wastewater or alkaline wastewater, and the neutralization and buffering treatment is performed by using alkali liquor or acid liquor respectively, so that the same set of system is used to meet the wastewater requirements of different parameters;
the wastewater after neutralization treatment enters a raw water tank, wherein raw water in the raw water tank is sent to a security filter through a raw water pump, and then is conveyed to an ultrafiltration system for treatment after passing through the security filter; wherein, under the action of pressure, the cartridge filter leads the stock solution to pass through the filter material, the filter residue is remained on the tube wall, and the filtrate flows out through the filter material, thereby achieving the purpose of filtration;
the ultrafiltration water treated by the ultrafiltration system enters an ultrafiltration water tank, wherein the water in the ultrafiltration water tank is conveyed to a softener through a primary conveying pump for softening treatment, and the softener is communicated with a softener backwashing pump and a salt tank;
the softened water enters a first-stage security filter, wherein the first-stage security filter is communicated with a scale inhibitor dosing pump and a non-oxidation type bactericide dosing pump;
the water treated by the primary cartridge filter is conveyed to a primary reverse osmosis system by a primary reverse osmosis high-pressure pump, and the water treated by the primary reverse osmosis system is conveyed to a reverse osmosis water production tank;
the water in the reverse osmosis water production tank is conveyed to a secondary safety filter through a secondary conveying pump, then enters a secondary reverse osmosis system, and the water subjected to secondary reverse osmosis treatment enters a secondary reverse osmosis water tank; wherein the secondary cartridge filter is communicated with a NaOH dosing pump, and concentrated water of the secondary reverse osmosis system is conveyed to the ultrafiltration water tank;
the water in the second-stage reverse osmosis water tank is conveyed to a third-stage cartridge filter through a third-stage conveying pump, the water treated by the third-stage cartridge filter enters a third-stage reverse osmosis system, and the water treated by the third-stage reverse osmosis is conveyed to a third-stage reverse osmosis water tank; the three-stage cartridge filter is communicated with a NaOH dosing pump through a pipeline, and concentrated water of the three-stage reverse osmosis system is conveyed to the reverse osmosis water tank;
water in the three-stage reverse osmosis water tank enters a UV sterilizer through an EDI transfer pump, wherein the sterilized water enters an EDI system after being treated by a precision filter, and the water treated by the EDI system enters a high-purity water tank, wherein the water in the high-purity water tank passes through a TOC remover and a mixing bed and finally enters a terminal filter; and concentrated water of the EDI system is conveyed to the reverse osmosis water tank through a conveying pump.
In this embodiment, the ultrafiltration system, the first-stage partial osmosis system, the second-stage reverse osmosis system, the third-stage reverse osmosis system and the EDI system are respectively communicated with the CPI cleaning tank through the cleaning pump to carry out backwashing treatment.
In this embodiment, the ultrafiltration system is communicated with an ultrafiltration backwashing system, the ultrafiltration backwashing system comprises a compressed air system, and in this embodiment, the compressed air system provides a backwashing effect for the ultrafiltration backwashing system.
In this embodiment, the produced water of the secondary reverse osmosis system is supplied to a NaOH dosing tank, an acid dosing tank and a NaClO dosing tank through pipe fittings respectively;
the NaOH dosing tank is used for dosing the acid-base wastewater neutralization buffer tank through a NaOH dosing pump; the backwashing alkali is provided for the ultrafiltration system by an ultrafiltration backwashing alkali dosing pump;
the acid dosing tank provides backwashing acid for the ultrafiltration system through an ultrafiltration backwashing acid dosing pump;
the NaClO dosing tank provides a bactericide for backwashing for the ultrafiltration system through an ultrafiltration backwashing bactericide dosing pump.
In this embodiment, the produced water of the secondary reverse osmosis system is also respectively communicated with NaHSO through pipelines3A dosing tank, a non-oxidizing bactericide dosing tank, and a scale inhibitor dosing tank;
the NaHSO3Dosing chest through NaHSO3The dosing pump and the pipe fitting provide reducing agent for the softener;
the non-oxidizing bactericide dosing box supplies dosing for the primary cartridge filter through a non-oxidizing bactericide dosing pump;
and the scale inhibitor dosing box supplies dosing for the primary cartridge filter through a scale inhibitor dosing pump.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used for convenience of description only, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above embodiments are only for describing the preferred mode of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (7)
1. A reclaimed water reuse treatment system is characterized in that: firstly, sending dilute acid-base reuse wastewater into an acid-base wastewater neutralization buffer tank through a pipe fitting, wherein the acid-base wastewater neutralization buffer tank is communicated with a NaOH dosing tank through a NaOH dosing pump and the pipe fitting so as to stir and neutralize the reuse wastewater;
the wastewater after neutralization treatment enters a raw water tank, wherein raw water in the raw water tank is sent to a security filter through a raw water pump, and then is conveyed to an ultrafiltration system for treatment after passing through the security filter;
the ultrafiltration water treated by the ultrafiltration system enters an ultrafiltration water tank, wherein the water in the ultrafiltration water tank is conveyed to a softener through a primary conveying pump for softening treatment, and the softener is communicated with a softener backwashing pump and a salt tank;
the softened water enters a first-stage cartridge filter, wherein the first-stage cartridge filter is communicated with a scale inhibitor dosing pump and a non-oxidation type bactericide dosing pump;
the water treated by the first-stage cartridge filter is conveyed to a first-stage reverse osmosis system by a first-stage reverse osmosis high-pressure pump, and the water treated by the first-stage reverse osmosis system is conveyed to a reverse osmosis water production tank;
the water in the reverse osmosis water production tank is conveyed to a secondary security filter through a secondary conveying pump, then enters a secondary reverse osmosis system, and the water subjected to secondary reverse osmosis treatment enters a secondary reverse osmosis water tank; wherein the secondary cartridge filter is communicated with a NaOH dosing pump, and concentrated water of the secondary reverse osmosis system is conveyed to the ultrafiltration water tank;
the water in the secondary reverse osmosis water tank is conveyed to a tertiary safety filter through a tertiary conveying pump, the water treated by the tertiary safety filter enters a tertiary reverse osmosis system, and the water treated by the tertiary reverse osmosis is conveyed to a tertiary reverse osmosis water tank; the three-stage cartridge filter is communicated with a NaOH dosing pump through a pipeline, and concentrated water of the three-stage reverse osmosis system is conveyed to the reverse osmosis water tank;
water in the three-stage reverse osmosis water tank enters a UV sterilizer through an EDI (electro-chemical ionization) delivery pump, wherein the sterilized water enters an EDI system after being treated by a precision filter, the water treated by the EDI system enters a high-purity water tank, and the water in the high-purity water tank passes through a TOC remover and a mixing bed and finally enters a terminal filter; and concentrated water of the EDI system is conveyed to the reverse osmosis water tank through a conveying pump.
2. The reclaimed water reuse treatment system according to claim 1, characterized in that: the ultrafiltration system, the first-stage sub-permeation system, the second-stage reverse osmosis system, the third-stage reverse osmosis system and the EDI system are respectively communicated with the CPI cleaning box through a cleaning pump so as to carry out backwashing treatment.
3. The reclaimed water reuse treatment system according to claim 1, characterized in that: the ultrafiltration system is communicated with an ultrafiltration backwashing system, and the ultrafiltration backwashing system comprises a compressed air system.
4. The reclaimed water reuse treatment system according to claim 1, characterized in that: and the produced water of the secondary reverse osmosis system is supplied to a NaOH dosing tank, an acid dosing tank and a NaClO dosing tank through pipe fittings respectively.
5. The reclaimed water reuse treatment system according to claim 4, wherein: the NaOH dosing tank is used for dosing the acid-base wastewater neutralization buffer tank through a NaOH dosing pump; the backwashing alkali is provided for the ultrafiltration system by an ultrafiltration backwashing alkali dosing pump;
the acid dosing tank provides backwashing acid for the ultrafiltration system through an ultrafiltration backwashing acid dosing pump;
the NaClO dosing tank provides a bactericide for backwashing for the ultrafiltration system through an ultrafiltration backwashing bactericide dosing pump.
6. The reclaimed water reuse treatment system according to claim 1, characterized in that: the produced water of the second-stage reverse osmosis system is also respectively communicated with NaHSO through pipelines3A dosing tank, a non-oxidizing bactericide dosing tank, and a scale inhibitor dosing tank.
7. The reclaimed water reuse treatment system according to claim 6, wherein: the NaHSO3Dosing chest through NaHSO3The dosing pump and the pipe fitting provide reducing agent for the softener;
the non-oxidizing bactericide dosing box supplies dosing for the primary cartridge filter through a non-oxidizing bactericide dosing pump;
and the scale inhibitor dosing box supplies dosing for the primary cartridge filter through a scale inhibitor dosing pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210294924.1A CN114735866A (en) | 2022-03-23 | 2022-03-23 | Reclaimed water recycling treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210294924.1A CN114735866A (en) | 2022-03-23 | 2022-03-23 | Reclaimed water recycling treatment system |
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| CN212770199U (en) * | 2020-06-28 | 2021-03-23 | 上海丽臻环保科技有限公司 | Reclaimed water recycling treatment equipment |
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