Water treatment concentrated water recycling and secondary utilization system

Abstract

The utility model discloses a kind of water treatment concentrated water recycling secondary utilization systems, including boiler, boiler is connected with concentrated water tank by first pipeline, concentrated water tank is connected with three-way pipe joint by second pipeline, three-way pipe joint is connected with primary filter by third pipeline, primary filter is connected with secondary filter by fourth pipeline, secondary filter is connected with domestic water tank by fifth pipeline, three-way pipe joint is connected with super concentrated water tank by sixth pipeline, super concentrated water tank is connected with humidification tower by seventh pipeline, humidification tower is connected with plate heat exchanger by eighth pipeline, plate heat exchanger is connected with super concentrated water tank by ninth pipeline, plate heat exchanger is connected with domestic water tank by tenth pipeline, domestic water tank is connected with plate heat exchanger by eleventh pipeline, super concentrated water tank is connected with tertiary filter by twelfth pipeline, tertiary filter is connected with super concentrated water tank by thirteenth pipeline.The utility model is high in boiler concentrated water recycling utilization rate, and water-saving effect is good.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial wastewater treatment equipment, and in particular to a water treatment concentrate recovery and secondary utilization system. Background Technology

[0002] In industrial production processes, steam boilers are widely used core thermal energy equipment. These boilers produce 5–6 m³ of high-concentration concentrate per hour (containing high levels of calcium and magnesium ions, chloride ions, and high conductivity). For a long time, for convenience and to reduce direct discharge costs, many factories have directly discharged this boiler concentrate into their wastewater systems. However, this approach has brought a series of serious and increasingly prominent problems. The current challenge is that the direct discharge of the large quantities of high-salinity, high-hardness, and highly corrosive ions generated per hour has proven unsustainable. This practice leads to the continuous deterioration and exceeding of key water quality indicators in circulating water systems, causing severe scaling and corrosion problems, significantly increasing energy consumption, maintenance costs, equipment damage risks, and the probability of unplanned downtime. Therefore, there is an urgent need to develop and apply more efficient, economical, and sustainable boiler concentrate treatment and resource utilization technologies to address its negative impacts on production water systems. Utility Model Content

[0003] This invention provides a water treatment concentrate recovery and secondary utilization system, which solves the problems of traditional boiler wastewater being directly discharged into the production circulating water system, resulting in low utilization rate and serious waste.

[0004] This utility model provides a water treatment concentrate recycling and secondary utilization system, including a boiler. The boiler outlet is connected to the inlet of a concentrate tank via a first pipe. The outlet of the concentrate tank is connected to the first interface of a tee connector via a second pipe. The second interface of the tee connector is connected to the inlet of a primary filter via a third pipe. The outlet of the primary filter is connected to the inlet of a secondary filter via a fourth pipe. The outlet of the secondary filter is connected to the inlet of a domestic water tank via a fifth pipe. The third interface of the tee connector is connected to the inlet of an ultra-concentrated water tank via a sixth pipe. The outlet of the ultra-concentrated water tank is connected to the spray pipe of the humidification tower via the seventh pipe. The outlet of the humidification tower is connected to the inlet of the plate heat exchanger via the eighth pipe. The outlet of the plate heat exchanger is connected to the return outlet of the ultra-concentrated water tank via the ninth pipe. The heat exchange outlet of the plate heat exchanger is connected to the heat exchange inlet of the domestic water tank via the tenth pipe. The heat exchange outlet of the domestic water tank is connected to the heat exchange inlet of the plate heat exchanger via the eleventh pipe. The sewage outlet of the ultra-concentrated water tank is connected to the inlet of the tertiary filter via the twelfth pipe. The outlet of the tertiary filter is connected to the return outlet of the ultra-concentrated water tank via the thirteenth pipe.

[0005] Preferably, a first booster pump is installed on the second pipeline, a second booster pump is installed on the seventh pipeline, a third booster pump is installed on the tenth pipeline, and a fourth booster pump is installed on the twelfth pipeline.

[0006] Preferably, a first control valve is provided on the first pipeline, a second control valve is provided on the third pipeline, and a third control valve is provided on the sixth pipeline.

[0007] Preferably, both the concentrated water tank and the ultra-concentrated water tank are equipped with a stirring structure.

[0008] Preferably, the primary filter is an activated carbon filter, and both the primary and secondary filters are cartridge filters.

[0009] Preferably, a water quality sensor is installed inside the concentrate tank.

[0010] As can be seen from the above technical solutions, this utility model provides a water treatment concentrate recovery and secondary utilization system.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model improves the quality of boiler concentrate water through a primary filter and a secondary filter, significantly reducing the risk of scaling in the domestic water tank. It also meets domestic water demand by recycling a portion of the concentrate water, resulting in high concentrate water utilization and good recycling effect.

[0013] 2. This utility model uses a three-way pipe joint to divert concentrated water to the ultra-concentrated water tank, which then supplies the spray water inside the humidification tower. It recovers 40m³ of concentrated water daily to replace the original industrial water used in the humidification tower, saving approximately 14,600 tons of water annually, demonstrating excellent water-saving performance. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the implementation examples will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of a water treatment concentrate recovery and secondary utilization system proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure and circulation principle of a water treatment concentrate recovery and secondary utilization system proposed in this utility model.

[0017] In the picture:

[0018] 1-Boiler; 2-Concentrate water tank; 3-T-connector; 4-Primary filter; 5-Secondary filter; 6-Domestic water tank; 7-Ultra-concentrate water tank; 8-Humidification tower; 9-Plate heat exchanger; 10-Tertiary filter; 101-First pipeline; 102-Second pipeline; 103-Third pipeline; 104-Fourth pipeline; 105-Fifth pipeline; 106-Sixth pipeline; 107-Seventh pipeline; 108-Eighth pipeline; 109-Ninth pipeline; 110-Tenth pipeline; 111-Eleventh pipeline; 112-Twelfth pipeline; 113-Thirteenth pipeline; 201-First booster pump; 202-Second booster pump; 203-Third booster pump; 204-Fourth booster pump; 301-First control valve; 302-Second control valve; 303-Third control valve. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0020] Example 1:

[0021] See Figure 1-2A water treatment concentrate recovery and reuse system includes a boiler 1. The outlet of the boiler 1 is connected to the inlet of a concentrate tank 2 via a first pipe 101. The outlet of the concentrate tank 2 is connected to the first interface of a tee connector 3 via a second pipe 102. The second interface of the tee connector 3 is connected to the inlet of a primary filter 4 via a third pipe 103. The outlet of the primary filter 4 is connected to the inlet of a secondary filter 5 via a fourth pipe 104. The outlet of the secondary filter 5 is connected to the inlet of a domestic water tank 6 via a fifth pipe 105. The third interface of the tee connector 3 is connected to the inlet of an ultra-concentrated water tank 7 via a sixth pipe 106. The outlet of the ultra-concentrated water tank 7 is connected to the spray pipe of a humidification tower 8 via a seventh pipe 107. The outlet of the humidification tower 8 is connected to the inlet of a plate heat exchanger 9 via an eighth pipe 108. The outlet of the plate heat exchanger 9 is connected to the inlet of a ninth pipe. 109 is connected to the return water inlet of the ultra-concentrated water tank 7. The heat exchange outlet of the plate heat exchanger 9 is connected to the heat exchange inlet of the domestic water tank 6 through the tenth pipe 110. The heat exchange outlet of the domestic water tank 6 is connected to the heat exchange inlet of the plate heat exchanger 9 through the eleventh pipe 111. The drain outlet of the ultra-concentrated water tank 7 is connected to the inlet of the tertiary filter 10 through the twelfth pipe 112. The outlet of the tertiary filter 10 is connected to the return water inlet of the ultra-concentrated water tank 7 through the thirteenth pipe 113. This utility model improves the boiler concentrate water quality through the primary filter 4 and the secondary filter 5, significantly reducing the risk of scaling in the domestic water tank. It meets the domestic water demand by recycling part of the concentrate water. The concentrate water utilization rate is high and the recycling effect is good. The concentrate water is diverted and transported to the ultra-concentrated water tank through the three-way pipe joint 3. The ultra-concentrated water tank supplies the spray water inside the humidification tower. The concentrate water replaces the original industrial water in the humidification tower, resulting in good water saving effect.

[0022] In the above embodiments, see Figure 1 The tenth pipe 110, the eleventh pipe 111, the heat exchange side channel of the plate heat exchanger 9, and the heat exchange chamber of the domestic water tank 6 together constitute a domestic water heat exchange circulation loop for heating the water in the domestic water tank 6.

[0023] In the above embodiments, preferably, the primary filter 4 is a sand filter, product model FSL, which uses a sand bed formed by homogeneous quartz sand of equal particle size as the filter carrier for three-dimensional deep filtration. It mainly uses sand and gravel as filter media to intercept and filter suspended solids and impurities in the water. The secondary filter 5 and the tertiary filter 10 are both VSRF fully automatic backwash filters, which can block small particulate impurities without easily clogging.

[0024] In the above embodiments, it can be understood that the tenth pipe 110, the eleventh pipe 111, the heat exchange side channel of the plate heat exchanger 9, and the heat exchange chamber of the domestic water tank 6 together constitute a domestic water heat exchange circulation loop for heating the water in the domestic water tank 6. The twelfth pipe 112, the tertiary filter 10, and the thirteenth pipe 113 constitute the sewage discharge and purification return loop of the ultra-concentrated water tank 7.

[0025] In the above embodiments, a first booster pump 201 is further provided on the second pipe 102, a second booster pump 202 is provided on the seventh pipe 107, a third booster pump 203 is provided on the tenth pipe 110, and a fourth booster pump 204 is provided on the twelfth pipe 112.

[0026] In the above embodiments, a first control valve 301 is further provided on the first pipe 101, the first control valve 301 is used to control the opening and closing of the first pipe 101, a second control valve 302 is provided on the third pipe 103, the second control valve 302 is used to control the opening and closing of the third pipe 103, and a third control valve 303 is provided on the sixth pipe 106, the third control valve 303 is used to control the opening and closing of the sixth pipe 106.

[0027] In the above embodiments, both the concentrated water tank 2 and the ultra-concentrated water tank 7 are equipped with a stirring structure. Both the concentrated water tank 2 and the ultra-concentrated water tank 7 have overflow ports on their side walls and are connected to overflow pipes. By installing stirring shafts and stirring blades inside the concentrated water tank 2 and the ultra-concentrated water tank 7, and driving the stirring shafts to rotate by a drive motor, the liquid is stirred to prevent impurities in the liquid from settling. Liquid level sensors are installed inside the concentrated water tank 2 and the ultra-concentrated water tank 7 to facilitate real-time monitoring of the liquid level.

[0028] In the above embodiments, the primary filter 4 is an activated carbon filter, and both the primary filter 4 and the secondary filter 5 are VSRF backwash filter cartridges, which enable the filters to have an automatic filter screen cleaning function.

[0029] In the above embodiment, a TDS water quality sensor, specifically the MW-TDS101 sensor, is installed in the concentrate tank 2. The TDS water quality sensor is used to detect calcium and magnesium ions, suspended particulate matter, proteins, microorganisms, colloids, bacteria and viruses in the water. By detecting the water quality online, it can be determined that the better treated concentrate should be preferably transported to the living area for further treatment and recycling.

[0030] As can be seen from the above technical solution, when it is necessary to replenish the domestic water tank 6, first close the first control valve 301 and the third control valve 303, open the second control valve 302, and start the first booster pump 201 to discharge the wastewater from the boiler 1 into the first pipe 101 through the outlet. Then, it is transported through the first pipe 101. During the transportation process, it is diverted through the three-way pipe joint 3. The water diverted to the third pipe 103 is initially filtered by the first-stage filter 4 to remove suspended impurities. After filtration, the filtered water is passed through the fourth pipe 104 into the second-stage filter 5 to further filter out small impurities in the water. The filtered water is then transported to the domestic water tank 6 through the fifth pipe 105 for domestic washing water.

[0031] When water needs to be supplied to the ultra-concentrated water tank 7, the first control valve 301 and the third control valve 303 are opened, the second control valve 302 is closed, and the first booster pump 201 is started. The water is diverted to the sixth pipeline 106 through the three-way pipe joint 3 and then transported to the ultra-concentrated water tank 7 for storage.

[0032] When humidification tower 8 needs to be supplied with water, the second booster pump 202 is started. Water in the ultra-concentrated water tank 7 is directly pressurized and transported to the spray pipe of humidification tower 8 through the seventh pipe 107. The spray pipe nozzles atomize and humidify the exhaust gas inside humidification tower 8. The humidified gas carries away some water vapor, thus concentrating the concentration of the spray water. The concentrated water falls to the bottom of humidification tower 8 and is discharged from the drain port into the eighth pipe 108. The spray water is then transported to the plate heat exchanger 9 through the eighth pipe 108, and then back to the ultra-concentrated water tank 7 through the ninth pipe 109 for recycling. The heat from the concentrated water inside the plate heat exchanger 9 is transferred to the heat exchange chamber of the domestic water tank 6 through the tenth pipe 110 to heat the water in the domestic water tank 6. The medium after heat exchange is returned to the plate heat exchanger 9 through the eleventh pipe 111 for circulating heat exchange, thus realizing the recycling of the concentrated water from boiler 1.

[0033] When the ultra-concentrated water tank 7 has been used for a certain period of time, the fourth booster pump 204 is started, and the sewage in the ultra-concentrated water tank 7 is transported to the interior of the three-stage filter 10 through the twelfth pipe 112. The three-stage filter 10 filters and separates the impurities in the water. After the filtration cycle has been completed for a certain period of time, the filter cartridge inside the three-stage filter 10 is removed for cleaning.

[0034] This invention is designed for the daily timed recycling of concentrated wastewater, preventing it from mixing with other production water. The recycled concentrated wastewater is used for humidification tower spraying and domestic water use, which saves production water on the one hand and effectively recycles the concentrated wastewater on the other, making it highly practical.

[0035] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of the invention is indicated by the claims.

[0036] It should be understood that this utility model is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model.

Claims

1. A water treatment concentrate recovery and reuse system, characterized in that: The system includes a boiler (1), whose outlet is connected to the inlet of a concentrated water tank (2) via a first pipe (101). The outlet of the concentrated water tank (2) is connected to the first interface of a three-way connector (3) via a second pipe (102). The second interface of the three-way connector (3) is connected to the inlet of a primary filter (4) via a third pipe (103). The outlet of the primary filter (4) is connected to the inlet of a secondary filter (5) via a fourth pipe (104). The outlet of the secondary filter (5) is connected to the inlet of a domestic water tank (6) via a fifth pipe (105). The third interface of the three-way connector (3) is connected to the inlet of an ultra-concentrated water tank (7) via a sixth pipe (106). The outlet of the ultra-concentrated water tank (7) is connected to the inlet of a seventh pipe. (107) is connected to the spray pipe of the humidification tower (8). The drain outlet of the humidification tower (8) is connected to the inlet of the plate heat exchanger (9) through the eighth pipe (108). The outlet of the plate heat exchanger (9) is connected to the return outlet of the ultra-concentrated water tank (7) through the ninth pipe (109). The heat exchange outlet of the plate heat exchanger (9) is connected to the heat exchange inlet of the domestic water tank (6) through the tenth pipe (110). The heat exchange outlet of the domestic water tank (6) is connected to the heat exchange inlet of the plate heat exchanger (9) through the eleventh pipe (111). The sewage outlet of the ultra-concentrated water tank (7) is connected to the inlet of the three-stage filter (10) through the twelfth pipe (112). The outlet of the three-stage filter (10) is connected to the return outlet of the ultra-concentrated water tank (7) through the thirteenth pipe (113).

2. The water treatment concentrate recovery and secondary utilization system according to claim 1, characterized in that, A first booster pump (201) is installed on the second pipe (102), a second booster pump (202) is installed on the seventh pipe (107), a third booster pump (203) is installed on the tenth pipe (110), and a fourth booster pump (204) is installed on the twelfth pipe (112).

3. The water treatment concentrate recovery and secondary utilization system according to claim 1, characterized in that, A first control valve (301) is provided on the first pipe (101), a second control valve (302) is provided on the third pipe (103), and a third control valve (303) is provided on the sixth pipe (106).

4. The water treatment concentrate recovery and secondary utilization system according to claim 1, characterized in that, Both the concentrated water tank (2) and the ultra-concentrated water tank (7) are equipped with stirring structures.

5. A water treatment concentrate recovery and secondary utilization system according to claim 1, characterized in that, The primary filter (4) is an activated carbon filter, and both the primary filter (4) and the secondary filter (5) are cartridge filters.

6. The water treatment concentrate recovery and secondary utilization system according to claim 1, characterized in that, A water quality sensor is installed inside the concentrated water tank (2).

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