A wastewater neutralization and treatment apparatus

Abstract

The utility model belongs to wastewater treatment equipment technical field more specifically relates to a wastewater neutralization treatment equipment, including sediment tank and filter system, be provided with collection cavity, neutralization cavity, sediment cavity and MBR cavity in sediment tank, collection cavity collects raw wastewater, filter system includes first water tank, second water tank, a plurality of reverse osmosis filter, a plurality of precision filter and bag filter, bag filter connects the water inlet of precision filter, the water outlet of precision filter connects reverse osmosis filter, the water outlet of reverse osmosis filter connects second water tank, the wastewater port of reverse osmosis filter connects the water inlet of precision filter, by analogy, through a plurality of precision filter and a plurality of reverse osmosis filter carry out multiple precision filtration and reverse osmosis filtration, the sewage produced in stainless steel pickling, caustic washing carries out the use treatment, the pure water after purification can be reused, saves water resources, realizes energy -conserving and emission -reducing.

Description

Technical Field

[0001] This utility model belongs to the technical field of wastewater treatment equipment, and more specifically relates to a wastewater neutralization treatment device. Background Technology

[0002] Wastewater from stainless steel pickling and alkali washing is polluted if discharged directly. Therefore, it is usually neutralized and filtered to form qualified discharge water before being discharged. This would greatly waste water resources. In addition, a large amount of clean water is used in stainless steel production, such as cleaning and cooling water. Discharging such water would obviously not meet the requirements of energy conservation and emission reduction. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a wastewater neutralization and treatment device that enables the reuse of greywater, saves water resources, and reduces energy consumption and emissions.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a wastewater neutralization treatment device, comprising a sedimentation tank and a filtration system, wherein the sedimentation tank is provided with a collection chamber, a neutralization chamber, a sedimentation chamber and an MBR chamber, the collection chamber collects the raw wastewater, the neutralization chamber adjusts the pH of the wastewater, the sedimentation chamber precipitates and settles fixed substances, and the MBR chamber is provided with a membrane bioreactor. The filtration system includes a first water tank, a second water tank, several reverse osmosis filters, several precision filters, and bag filters. The first water tank is connected to the bag filters via a water pump and pipes. The bag filters are connected to the inlet of the first precision filter. The outlet of the first precision filter is connected to the first reverse osmosis filter. The outlet of the first reverse osmosis filter is connected to the second water tank via a pure water pipe. The wastewater outlet of the first reverse osmosis filter is connected to the inlet of the second precision filter, and so on. The wastewater outlet of the last reverse osmosis filter is connected to the inlet of the last precision filter, and the wastewater outlet of the last precision filter is connected to a concentrate tank.

[0005] Furthermore, a return pipe is provided on the pure water pipe, the return pipe is connected to the upper water inlet of the precision filter, and a return water pump is provided on the return pipe.

[0006] Furthermore, a backwashing pump is installed between the outlet of the last reverse osmosis filter and the pure water pipeline, and a flushing pipeline is connected to the lower end of the precision filter, which is connected to the pure water pipeline.

[0007] Furthermore, the filtration system also includes a filter press connected to the membrane bioreactor and the first water tank.

[0008] Furthermore, the RO membranes in the first few reverse osmosis filters are nickel-ion-specific membranes.

[0009] Compared with the prior art, the beneficial effects of this utility model are: by performing multiple precision filtrations and reverse osmosis filtrations through multiple precision filters and multiple reverse osmosis filters, the wastewater generated from stainless steel pickling and alkali washing can be treated and reused, and the purified water can be reused, saving water resources and achieving energy conservation and emission reduction. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the wastewater neutralization treatment equipment of this utility model; Figure 2 This is a schematic diagram of the wastewater neutralization treatment device of this utility model from another perspective; Figure 3 This is a schematic diagram of the filtration system in the wastewater neutralization treatment equipment of this utility model.

[0011] Reference numerals: 1. Sedimentation tank; 2. Collection chamber; 3. Neutralization chamber; 4. Sedimentation chamber; 5. MBR chamber; 6. First water tank; 7. Second water tank; 8. Precision filter; 9. Bag filter; 10. Concentrate tank; 11. Return pipe; 12. Return water pump; 13. Pure water pipe; 14. Backwash transfer pump; 15. Flushing pipe; 16. Filter press; 17. Membrane bioreactor; 18. Reverse osmosis filter. Detailed Implementation

[0012] 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.

[0013] 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.

[0014] Reference Figures 1 to 3 The present invention will be further described below.

[0015] A wastewater neutralization treatment device includes a sedimentation tank 1 and a filtration system. The sedimentation tank 1 is equipped with a collection chamber 2, a neutralization chamber 3, a sedimentation chamber 4, and an MBR chamber 5. The collection chamber 2 collects the raw wastewater, the neutralization chamber 3 adjusts the pH of the wastewater, the sedimentation chamber 4 precipitates and settles fixed substances, and the MBR chamber 5 is equipped with a membrane bioreactor 17. The filtration system includes a first water tank 6, a second water tank 7, several reverse osmosis filters 18, several precision filters 8, and a bag filter 9. The first water tank 6 is connected to the bag filter 9 through a water pump and a pipeline. The bag filter 9 is connected to the inlet of the first precision filter 8. The outlet of the first precision filter 8 is connected to the first reverse osmosis filter 18. The outlet of the first reverse osmosis filter 18 is connected to the second water tank 7 through a pure water pipeline 13. The wastewater outlet of the first reverse osmosis filter 18 is connected to the inlet of the second precision filter 8, and so on. The wastewater outlet of the last reverse osmosis filter 18 is connected to the inlet of the last precision filter 8, and the wastewater outlet of the last precision filter 8 is connected to a concentrate tank 10. Specifically, the wastewater outlet of the first precision filter 8 is connected to the bag filter 9. Since the concentrated water from the first precision filtration has not been filtered by the reverse osmosis filter 18, its concentration is high, so it is directly returned to the bag filter 9 for re-filtration. Specifically, starting with the second precision filter 8, the wastewater outlet of the previous precision filter 8 is connected to the wastewater inlet of the next precision filter 8; that is, the concentrated water filtered by the previous precision filter 8 is directly sent to the next precision filter 8 for filtration. Figure 3 As shown, in this preferred embodiment, a return pipe 11 is provided on the pure water pipe 13. The return pipe 11 is connected to the upper inlet of the precision filter 8, and a return water pump 12 is provided on the return pipe 11. Figure 3 As shown, in this preferred embodiment, a backwashing pump 14 is provided between the outlet of the last reverse osmosis filter 18 and the pure water pipe 13. The lower end of the precision filter 8 is connected to a flushing pipe 15, which is connected to the pure water pipe 13. The backwashing pump 14 can directly transport water from the pure water pipe 13 to the point of use. When backwashing is required in the filter, the backwashing pump 14 is reversed, allowing pure water to enter from the filter outlet in reverse, flushing the filter membrane or filter components inside the filter and improving the filtration effect. Figure 1 As shown, in this preferred embodiment, the filtration system further includes a filter press 16, which is connected to the membrane bioreactor 17 and the first water tank 6. In this preferred embodiment, the RO membranes in the first few reverse osmosis filters 18 are nickel-ion dedicated membranes. Figures 1 to 3As shown, the wastewater neutralization and reuse process is as follows: Raw wastewater is collected in collection chamber 2 of sedimentation tank 1 and pumped into neutralization chamber 3 for pH adjustment. Then, it is pumped into sedimentation chamber 4, where a coagulant is added to produce and settle precipitates. The upper layer of wastewater is then sent into MBR chamber 5 for biochemical treatment via the internal membrane bioreactor 17. The treated wastewater is first filtered by filter press 16, and the filtered wastewater enters the first water tank 6 for storage. A pump then pumps the wastewater from the first water tank 6 into bag filter 9. The wastewater filtered by bag filter 9 enters the first precision filter 8. The clear water filtered by precision filter 8 enters the first reverse osmosis filter 18. The pure water filtered by reverse osmosis filter 18... Water enters the second water tank 7 through the pure water pipe 13 for storage, while the concentrated water filtered by the first reverse osmosis filter 18 enters the second precision filter 8 for further precision filtration. The filtered clean water then enters the second reverse osmosis filter 18, and so on, until the concentrated water filtered by the last reverse osmosis filter 18 enters the last precision filter 8. The filtered clean water is directly sent to the second water tank 7, while the concentrated water is stored in the concentrated water tank 10. In summary, through multiple precision filters 8 and multiple reverse osmosis filters 18, the wastewater generated from stainless steel acid washing and alkali washing is treated for reuse. The purified pure water can be reused, saving water resources and achieving energy conservation and emission reduction.

[0016] 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 by this utility model. 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 wastewater neutralization treatment device, characterized in that: The system includes a sedimentation tank and a filtration system. The sedimentation tank is equipped with a collection chamber, a neutralization chamber, a sedimentation chamber, and an MBR chamber. The collection chamber collects the raw wastewater, the neutralization chamber adjusts the pH of the wastewater, the sedimentation chamber precipitates and settles the solids, and the MBR chamber is equipped with a membrane bioreactor. The filtration system includes a first water tank, a second water tank, several reverse osmosis filters, several precision filters, and bag filters. The first water tank is connected to the bag filters via a water pump and pipes. The bag filters are connected to the inlet of the first precision filter. The outlet of the first precision filter is connected to the first reverse osmosis filter. The outlet of the first reverse osmosis filter is connected to the second water tank via a pure water pipe. The wastewater outlet of the first reverse osmosis filter is connected to the inlet of the second precision filter, and so on. The wastewater outlet of the last reverse osmosis filter is connected to the inlet of the last precision filter, and the wastewater outlet of the last precision filter is connected to a concentrate tank.

2. The wastewater neutralization treatment equipment according to claim 1, characterized in that: A return pipe is provided on the pure water pipeline. The return pipe is connected to the upper inlet of the precision filter, and a return water pump is provided on the return pipe.

3. The wastewater neutralization treatment equipment according to claim 1, characterized in that: A backwashing pump is installed between the outlet of the last reverse osmosis filter and the pure water pipeline. The lower end of the precision filter is connected to a flushing pipeline, which is connected to the pure water pipeline.

4. The wastewater neutralization treatment equipment according to claim 1, characterized in that: The filtration system also includes a filter press, which is connected to the membrane bioreactor and the first water tank.

5. The wastewater neutralization treatment equipment according to claim 1, characterized in that: The RO membranes in the first few reverse osmosis filters are nickel-ion-specific membranes.

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