Secondary reverse osmosis water reuse equipment with activated carbon

Abstract

The utility model belongs to water treatment equipment technical field more specifically relates to a two -stage reverse osmosis reclaimed water reuse equipment with activated carbon, including reclaimed water reuse pool, a plurality of pre -filter, first water tank, a plurality of parallel ultra -filter, second water tank, first booster pump, first reverse osmosis membrane group, thick water tank, second booster pump, second reverse osmosis membrane group and pure water tank, a plurality of pre -filter carry out step by step filtration, after filtration enters first water tank, a plurality of parallel ultra -filter connect first water tank, and the water after filtration enters second water tank, and first booster pump is located between second water tank and first reverse osmosis membrane group, and the pure water outlet of first reverse osmosis membrane group is connected pure water tank, and thick water export connects thick water tank, and second booster pump is located between thick water tank and second reverse osmosis membrane group, and the pure water export of second reverse osmosis membrane group is connected pure water tank, and thick water export is discharged through blowoff pipeline, and the water quality of the pure water after two -stage reverse osmosis treatment is more stable, improves the utilization of water.

Description

Technical Field

[0001] This utility model belongs to the field of water treatment equipment technology, and more specifically relates to a two-stage reverse osmosis greywater reuse device with activated carbon. Background Technology

[0002] Reclaimed water reuse refers to the process of treating domestic sewage and industrial wastewater to meet certain water quality standards and then reusing them for non-potable water purposes such as industrial production, urban greening, road cleaning, vehicle washing, and construction. Alternatively, it can be further purified to obtain pure water. Traditional treatment equipment mainly uses single-stage reverse osmosis to obtain pure water, but the concentrated water produced by only one stage of reverse osmosis still has considerable potential for utilization, resulting in a certain waste of water resources. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a two-stage reverse osmosis water reuse device with activated carbon. The pure water treated by the two-stage reverse osmosis is more stable and improves water utilization.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a two-stage reverse osmosis greywater reuse device with activated carbon, comprising a greywater reuse tank, several pre-filters, a first water tank, multiple parallel ultrafilters, a second water tank, a first booster pump, a first reverse osmosis membrane module, a concentrate tank, a second booster pump, a second reverse osmosis membrane module, and a pure water tank. Several pre-filters are connected in series to filter the treated wastewater in the reuse tank stage by stage. The filtered water then enters the first water tank. Multiple parallel ultrafilters are connected to the first water tank, and the filtered water enters the second water tank. The first booster pump is located between the second water tank and the first reverse osmosis membrane module. The pure water outlet of the first reverse osmosis membrane module is connected to the pure water tank, and the concentrate outlet is connected to the concentrate tank. The second booster pump is located between the concentrate tank and the second reverse osmosis membrane module. The pure water outlet of the second reverse osmosis membrane module is connected to the pure water tank, and the concentrate outlet is discharged through a sewage pipe.

[0005] Furthermore, the plurality of pre-filters include a multi-media filter, an activated carbon filter, and a precision filter connected in sequence, and the wastewater outlets of the multi-media filter and the activated carbon filter are connected to a sewage discharge pipe.

[0006] Furthermore, the first reverse osmosis membrane module includes three reverse osmosis filters, two of which are connected in parallel. The two parallel reverse osmosis filters are connected in series with the last reverse osmosis filter. The inlet of the two parallel reverse osmosis filters is connected to the second water tank through the first booster pump. The concentrate outlet of the two parallel reverse osmosis filters is connected to the inlet of the last reverse osmosis filter. The concentrate outlet of the last reverse osmosis filter is connected to the concentrate tank. The pure water outlet of all three reverse osmosis filters is connected to the pure water tank.

[0007] Furthermore, the second reverse osmosis membrane module includes two reverse osmosis filters connected in series. The inlet of the first reverse osmosis filter is connected to the concentrate tank via a second booster pump. The concentrate outlet of the first reverse osmosis filter is connected to the inlet of the second reverse osmosis filter. The pure water outlets of both reverse osmosis filters are connected to the pure water tank. The concentrate outlet of the second reverse osmosis filter is connected to the sewage discharge pipe.

[0008] Furthermore, the inlet of the multiple parallel ultrafiltration filters is connected to the first water tank, the purified water outlet is connected to the second water tank, and the wastewater outlet is connected to the sewage pipe.

[0009] Furthermore, a bypass pipe is provided between the inlet and outlet of both the first booster pump and the second booster pump, and a bypass valve is provided on the bypass pipe.

[0010] Furthermore, it also includes a first delivery pump connecting the first water tank and the ultrafiltration unit, a second delivery pump connecting the pure water tank, and a raw water pump connecting the greywater reuse tank.

[0011] Furthermore, level sensors are installed in the first water tank, the second water tank, the concentrate tank, and the pure water tank.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. Using two-stage reverse osmosis technology, the first and second reverse osmosis membrane modules work together to more effectively remove dissolved solids, organic matter, bacteria, viruses and other impurities from the water. The pure water after two-stage reverse osmosis treatment is more stable and can meet the needs of more water users with high water quality requirements. 2. This allows the concentrated water to be reused multiple times, maximizing the recovery of water resources, improving the pure water recovery rate, and reducing water waste; 3. Several pre-filters can effectively ensure water quality and improve the overall operating efficiency and stability of the equipment. Attached Figure Description

[0013] Figure 1 This invention relates to a two-stage reverse osmosis wastewater reuse device with activated carbon.

[0014] Figure reference numerals: 1. Reclaimed water tank; 2. First water tank; 3. Ultrafiltration unit; 4. Second water tank; 5. First booster pump; 6. First reverse osmosis membrane module; 7. Concentrate tank; 8. Second booster pump; 9. Second reverse osmosis membrane module; 10. Pure water tank; 11. Multi-media filter; 12. Activated carbon filter; 13. Precision filter; 14. Bypass pipe; 15. Bypass valve; 16. First transfer pump; 17. Second transfer pump; 18. Raw water pump; 19. Liquid level sensor. Detailed Implementation

[0015] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0017] Reference Figure 1 The present invention will be further described below.

[0018] A two-stage reverse osmosis greywater reuse system with activated carbon includes a greywater reuse tank 1, several pre-filters, a first water tank 2, multiple parallel ultrafiltration units 3, a second water tank 4, a first booster pump 5, a first reverse osmosis membrane module 6, a concentrate tank 7, a second booster pump 8, a second reverse osmosis membrane module 9, and a pure water tank 10. The pre-filters are connected in series to filter the treated wastewater in the reuse tank 1 in stages. The filtered water then enters the first water tank 2. The multiple parallel ultrafiltration units 3 are connected to the first water tank 2, and the filtered water enters the second water tank 4. The first booster pump 5 is located between the second water tank 4 and the first reverse osmosis membrane module 6. The pure water outlet of the first reverse osmosis membrane module 6 is connected to the pure water tank 10, and the concentrate outlet is connected to the concentrate tank 7. The second booster pump 8 is located between the concentrate tank 7 and the second reverse osmosis membrane module 9. The pure water outlet of the second reverse osmosis membrane module 9 is connected to the pure water tank 10, and the concentrate outlet is discharged through a sewage pipe. Specifically, the sewage pipe can be directly connected to the sewer system. Since the recycled clean water has already undergone wastewater treatment, impurities and concentrated water produced by the various filters in the equipment can be directly discharged into the sewer system. For example... Figure 1 As shown, in this preferred embodiment, the plurality of pre-filters include a multi-media filter 11, an activated carbon filter 12, and a precision filter 13 connected in sequence. The wastewater outlets of the multi-media filter 11 and the activated carbon filter 12 are connected to a sewage pipe. Specifically, the multi-media filter 11 removes suspended solids, solid or colloidal particles from the water, the activated carbon filter 12 adsorbs organic matter, and the precision filter 13 removes small particles from the water. Figure 1As shown, in this preferred embodiment, the first reverse osmosis membrane module 6 includes three reverse osmosis filters, two of which are connected in parallel. These two parallel reverse osmosis filters are connected in series with the last reverse osmosis filter. The inlets of the two parallel reverse osmosis filters are connected to the second water tank 4 via a first booster pump 5. The concentrate outlets of the two parallel reverse osmosis filters are connected to the inlet of the last reverse osmosis filter. The concentrate outlet of the last reverse osmosis filter is connected to a concentrate tank 7. The pure water outlets of all three reverse osmosis filters are connected to a pure water tank 10. Specifically, the concentrate filtered by the two parallel reverse osmosis filters enters the last reverse osmosis filter for further reverse osmosis filtration, improving concentrate utilization. Figure 1 As shown, in this preferred embodiment, the second reverse osmosis membrane module 9 includes two reverse osmosis filters connected in series. The inlet of the first reverse osmosis filter is connected to the concentrate tank 7 via a second booster pump 8. The concentrate outlet of the first reverse osmosis filter is connected to the inlet of the second reverse osmosis filter. The pure water outlets of both reverse osmosis filters are connected to the pure water tank 10. The concentrate outlet of the second reverse osmosis filter is connected to a drain pipe. Specifically, the two reverse osmosis filters connected in series continuously filter the concentrate, further improving the concentrate utilization rate. Figure 1 As shown, in this preferred embodiment, the inlet of the plurality of parallel ultrafiltration filters 3 is connected to the first water tank 2, the purified water outlet is connected to the second water tank 4, and the wastewater outlet is connected to the sewage pipe. Figure 1 As shown, in this preferred embodiment, a bypass pipe 14 is provided between the inlet and outlet of both the first booster pump 5 and the second booster pump 8, and a bypass valve 15 is provided on the bypass pipe 14. Specifically, when the pressure is too high, the bypass valve 15 can be opened to allow the high-pressure water at the booster pump outlet to flow back and reduce the pressure. Figure 1 As shown, in this preferred embodiment, it further includes a first delivery pump 16 connecting the first water tank 2 and the ultrafiltration unit 3, a second delivery pump 17 connecting the pure water tank 10, and a raw water pump 18 connecting the greywater reuse tank 1. Figure 1 As shown, in this preferred embodiment, level sensors 19 are installed in the first water tank 2, the second water tank 4, the concentrated water tank 7, and the pure water tank 10. Figure 1As shown, the treated wastewater is collected in the reclaimed water tank 1. The treated water is then pumped by the raw water pump 18 to several pre-filters. After passing through a multi-media filter 11, an activated carbon filter 12, and a precision filter 13, the treated water is filtered to form primary filtered water, which is then collected in the first water tank 2. The first transfer pump 16 connected to the first water tank 2 pumps the primary filtered water to multiple parallel ultrafiltration units 3 to produce secondary filtered water, which is then collected in the second water tank 4. The secondary filtered water in the second water tank 4 is pressurized by the first booster pump 5 and then pumped into the first reverse osmosis membrane module 6. The resulting pure water is collected in the pure water tank 10, while the concentrated water is collected in the concentrated water tank 7. The concentrated water in the concentrated water tank 7 is pumped by the second booster pump 8 into the second reverse osmosis membrane module 9. The resulting pure water is collected in the pure water tank 10, and the further concentrated water enters the sewage pipe. The pure water in the pure water tank 10 can be pumped to the water-using equipment by the second transfer pump 17.

[0019] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A two-stage reverse osmosis wastewater reuse device with activated carbon, characterized in that: The system includes a greywater reuse tank, several pre-filters, a first water tank, multiple parallel ultrafiltration units, a second water tank, a first booster pump, a first reverse osmosis membrane module, a concentrate tank, a second booster pump, a second reverse osmosis membrane module, and a pure water tank. The pre-filters are connected in series to filter the treated wastewater in the reuse tank step by step. The filtered water then enters the first water tank. The multiple parallel ultrafiltration units are connected to the first water tank, and the filtered water enters the second water tank. The first booster pump is located between the second water tank and the first reverse osmosis membrane module. The pure water outlet of the first reverse osmosis membrane module is connected to the pure water tank, and the concentrate outlet is connected to the concentrate tank. The second booster pump is located between the concentrate tank and the second reverse osmosis membrane module. The pure water outlet of the second reverse osmosis membrane module is connected to the pure water tank, and the concentrate outlet is discharged through a sewage pipe.

2. The activated carbon belt secondary reverse osmosis reclaimed water reuse equipment according to claim 1, characterized in that: The plurality of pre-filters include a multi-media filter, an activated carbon filter, and a precision filter connected in sequence, with the wastewater outlets of the multi-media filter and the activated carbon filter connected to a sewage discharge pipe.

3. The activated carbon belt secondary reverse osmosis reclaimed water reuse equipment according to claim 1, characterized in that: The first reverse osmosis membrane module includes three reverse osmosis filters, two of which are connected in parallel. The two parallel reverse osmosis filters are connected in series with the last reverse osmosis filter. The inlet of the two parallel reverse osmosis filters is connected to the second water tank through the first booster pump. The concentrate outlet of the two parallel reverse osmosis filters is connected to the inlet of the last reverse osmosis filter. The concentrate outlet of the last reverse osmosis filter is connected to the concentrate tank. The pure water outlet of all three reverse osmosis filters is connected to the pure water tank.

4. The secondary reverse osmosis wastewater reuse equipment with activated carbon according to claim 1, characterized in that: The second reverse osmosis membrane module includes two reverse osmosis filters connected in series. The inlet of the first reverse osmosis filter is connected to the concentrate tank via a second booster pump. The concentrate outlet of the first reverse osmosis filter is connected to the inlet of the second reverse osmosis filter. The pure water outlets of both reverse osmosis filters are connected to the pure water tank. The concentrate outlet of the second reverse osmosis filter is connected to the sewage discharge pipe.

5. The secondary reverse osmosis wastewater reuse equipment with activated carbon according to claim 1, characterized in that: The inlet of the multiple parallel ultrafiltration units is connected to the first water tank, the purified water outlet is connected to the second water tank, and the wastewater outlet is connected to the sewage pipe.

6. The secondary reverse osmosis wastewater reuse equipment with activated carbon according to claim 1, characterized in that: A bypass pipe is provided between the inlet and outlet of the first booster pump and the second booster pump, and a bypass valve is provided on the bypass pipe.

7. The secondary reverse osmosis wastewater reuse equipment with activated carbon according to claim 1, characterized in that: It also includes a first delivery pump connecting the first water tank and the ultrafiltration unit, a second delivery pump connecting the pure water tank, and a raw water pump connecting the greywater reuse tank.

8. The secondary reverse osmosis wastewater reuse equipment with activated carbon according to claim 1, characterized in that: Liquid level sensors are installed in the first water tank, the second water tank, the concentrated water tank, and the pure water tank.

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