Heavy metal wastewater treatment device and system

Abstract

The utility model relates to the technical field of heavy metal wastewater treatment, in particular to a heavy metal wastewater treatment device and system, which comprises a physicochemical reaction unit, a physicochemical treatment settling unit, a precision filtering unit and a sludge treatment unit which are arranged in wastewater treatment equipment, an ultrafiltration system, a primary reverse osmosis system, a secondary reverse osmosis system and an evaporation system are arranged in the zero discharge unit; the wastewater treatment equipment has the beneficial effects that the wastewater treatment equipment is internally provided with a physicochemical reaction unit, a physicochemical treatment sedimentation unit, a precision filtration unit, a sludge treatment unit and a zero discharge unit, the zero discharge unit comprises an ultrafiltration system, a first-stage reverse osmosis system, a second-stage reverse osmosis system and an evaporation system, and clear water is filtered out, collected and reused through the high-pressure filtration effect of a membrane; the intercepted pollutants continuously stay in the raw water and are concentrated, and after secondary concentration, the wastewater enters an evaporation system for evaporation treatment, so that the treatment of the heavy metal wastewater is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy metal wastewater treatment, in particular to a heavy metal wastewater treatment device and system. Background Art

[0002] With the implementation of the global sustainable development strategy, circular economy and clean production technology have attracted more and more attention. The treatment of heavy metal wastewater from electroplating has developed towards the comprehensive prevention and control stage of clean production process, material recycling, and wastewater reuse. In the future, the treatment of heavy metal wastewater from electroplating will implement the circular economy and attach importance to the development and application of clean production technology: adopt full process control, combine comprehensive wastewater treatment, and ultimately achieve zero wastewater discharge. There are many types of electroplating wastewater.

[0003] In the prior art, a heavy metal treatment system generally includes a wastewater collection tank connected in series to a pipeline, a reaction sedimentation tank for removing heavy metals, a neutralization reaction tank, an aeration device installed in all reaction tanks, a fan connected to the aeration device, and a pump and a control valve installed on the pipeline and controlled by a control cabinet.

[0004] However, the traditional heavy metal treatment system has a complex structure, occupies a large space and has high cost during the treatment process. Therefore, the utility model proposes a heavy metal wastewater treatment device and system to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a heavy metal wastewater treatment device and system to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heavy metal wastewater treatment device, the heavy metal wastewater treatment device comprising: a wastewater treatment device, a feed frame is arranged on the surface of the wastewater treatment device, a filter plate is arranged in the feed frame, and a physicochemical reaction unit, a physicochemical treatment sedimentation unit, a precision filtration unit, and a sludge disposal unit are arranged in the wastewater treatment device;

[0007] Zero emission unit: an ultrafiltration system, a primary reverse osmosis system, a secondary reverse osmosis system and an evaporation system are provided in the zero emission unit.

[0008] Preferably, a placement groove is provided on the surface of the feed frame, a second support rod is arranged in the placement groove, a buffer spring is sleeved on the surface of the second support rod, and the filter plate is sleeved on the second support rod.

[0009] Preferably, one end of the buffer spring is fixedly connected to the lower surface of the filter plate, and the other end of the buffer spring is fixedly connected to the surface of the placement groove. A support rod is provided on the inner side of the feed frame, and the support rod is fixed to the side of the feed frame by bolts. A scraper is sleeved on the surface of the support rod, and the scraper can clean the surface of the filter plate.

[0010] Preferably, a guide rod is provided on the outer side of the feed frame, a bracket and a spring are sleeved on the surface of the guide rod, a sealing plate is provided at one end of the bracket, a sealing strip is provided on the side of the sealing plate, and the sealing plate can be used to seal the side of the feed frame, one end of the spring is fixedly connected to the surface of the bracket, and the other end of the spring is fixedly connected to the surface of the guide rod, and one end of the support rod passes through the sealing plate.

[0011] Preferably, the wastewater treatment equipment is made of PP polypropylene material, and the physicochemical reaction unit and the physicochemical treatment sedimentation unit can perform physical and chemical reactions on the heavy metal wastewater. After sedimentation treatment, the precision filtration unit can be used to precisely filter the wastewater after the reaction, and the sludge disposal unit can filter and treat the fine sludge inside the wastewater.

[0012] Preferably, the zero-emission unit is located inside the wastewater treatment equipment, and an ultrafiltration system, a primary reverse osmosis system and a secondary reverse osmosis system are provided in the zero-emission unit to perform osmotic filtration on the heavy metal wastewater, and then an evaporation system is used to evaporate the treated wastewater.

[0013] A heavy metal wastewater treatment system comprises the heavy metal wastewater treatment device.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model proposes a heavy metal wastewater treatment device and system. When in use, the heavy metal wastewater can first be poured into the wastewater treatment equipment. The wastewater treatment equipment is provided with a physicochemical reaction unit, a physicochemical treatment sedimentation unit, a precision filtration unit, a sludge disposal unit, and a zero-emission unit. The zero-emission unit comprises an ultrafiltration system, a primary reverse osmosis system, a secondary reverse osmosis system, and an evaporation system. Through the high-pressure filtration effect of the membrane, the clean water is filtered out and collected for reuse. The trapped pollutants continue to stay in the raw water and are concentrated. After the secondary concentration, the wastewater enters the evaporation system for evaporation treatment, thereby achieving the treatment of the heavy metal wastewater. This avoids the problems of complex structure, large space occupation, and high cost of the traditional heavy metal treatment system during the treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a top view of the structure of the utility model;

[0018] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4It is a partial cross-sectional view of the structure of the utility model;

[0020] Figure 5 This is the structure control flow chart of the utility model;

[0021] Figure 6 This is the internal flow chart of the zero emission unit.

[0022] In the figure: 1. Wastewater treatment equipment; 2. Feed frame; 3. Filter plate; 4. Physicochemical reaction unit; 5. Physicochemical treatment sedimentation unit; 6. Precision filtration unit; 7. Sludge disposal unit; 8. Zero emission unit; 9. Ultrafiltration system; 10. Primary reverse osmosis system; 11. Secondary reverse osmosis system; 12. Evaporation system; 13. Placement tank; 14. Second support rod; 15. Buffer spring; 16. Support rod; 17. Scraper; 18. Guide rod; 19. Bracket; 20. Spring; 21. Sealing plate; 22. Sealing strip. DETAILED DESCRIPTION

[0023] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present utility model, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0027] Embodiment 1

[0028] See also Figures 1 to 6 The utility model provides a technical solution: a heavy metal wastewater treatment device, the heavy metal wastewater treatment device comprising: a wastewater treatment device 1, a feed frame 2 is arranged on the surface of the wastewater treatment device 1, a filter plate 3 is arranged in the feed frame 2, a physicochemical reaction unit 4, a physicochemical treatment sedimentation unit 5, a precision filtration unit 6, and a sludge disposal unit 7 are arranged in the wastewater treatment device 1; a zero-emission unit 8, an ultrafiltration system 9, a primary reverse osmosis system 10, a secondary reverse osmosis system 11 and an evaporation system 12 are arranged in the zero-emission unit 8, a heavy metal wastewater treatment system, including the heavy metal wastewater treatment device;

[0029] When in use, the heavy metal wastewater can first be poured into the wastewater treatment equipment 1. The wastewater treatment equipment 1 is provided with a physicochemical reaction unit 4, a physicochemical treatment sedimentation unit 5, a precision filtration unit 6, a sludge disposal unit 7, and a zero-emission unit 8. The zero-emission unit 8 includes an ultrafiltration system 9, a primary reverse osmosis system 10, a secondary reverse osmosis system 11, and an evaporation system 12. Through the high-pressure filtration effect of the membrane, the clean water is filtered out and collected for reuse. The trapped pollutants continue to stay in the raw water and are concentrated. After the secondary concentration, the wastewater enters the evaporation system 12 for evaporation treatment, thereby achieving the treatment of the heavy metal wastewater.

[0030] Embodiment 2

[0031] On the basis of the first embodiment, in order to facilitate the filtration of heavy metal wastewater, a filter plate 3 is provided, a placement groove 13 is provided on the surface of the feed frame 2, a second support rod 14 is provided in the placement groove 13, a buffer spring 15 is sleeved on the surface of the second support rod 14, the filter plate 3 is sleeved on the second support rod 14, one end of the buffer spring 15 is fixedly connected to the lower surface of the filter plate 3, and the other end of the buffer spring 15 is fixedly connected to the surface of the placement groove 13, a support rod 16 is provided on the inner side of the feed frame 2, and the support rod 16 is fixed to the feed frame 2 by bolts. On the side, the surface of the support rod 16 is sleeved with a scraper 17, and the scraper 17 can clean the surface of the filter plate 3. A guide rod 18 is provided on the outer side of the feed frame 2, and a bracket 19 and a spring 20 are sleeved on the surface of the guide rod 18. A sealing plate 21 is provided at one end of the bracket 19, and a sealing strip 22 is provided on the side of the sealing plate 21. The sealing plate 21 can be used to seal the side of the feed frame 2. One end of the spring 20 is fixedly connected to the surface of the bracket 19, and the other end of the spring 20 is fixedly connected to the surface of the guide rod 18. One end of the support rod 16 passes through the sealing plate 21;

[0032] When in use, heavy metal wastewater can be poured into the wastewater treatment equipment 1 through the feed frame 2, and the wastewater can be preliminarily filtered using the filter plate 3 arranged in the feed frame 2, and larger impurities in the wastewater can be filtered out. The buffer spring 15 arranged at the bottom of the support rod 16 can reduce the impact force of the wastewater on the filter plate 3 when the wastewater is poured onto the filter plate 3 to avoid splashing of the wastewater. When there is a lot of dirt attached to the surface of the filter plate 3, the scraper 17 can be pulled to clean the surface of the filter plate 3 using the scraper 17, and the scraper 17 can be used to push larger impurities to the side of the feed frame 2, and the sealing plate 21 can be opened to make the impurities fall into the special collection equipment. The setting of the spring 20 can enable the sealing plate 21 to cooperate with the sealing strip 22 to seal the side of the feed frame 2.

[0033] Embodiment 3

[0034] On the basis of the second embodiment, a zero-emission unit 8 is provided for the convenience of treating heavy metal wastewater. The zero-emission unit 8 is located inside the wastewater treatment equipment 1. An ultrafiltration system 9, a primary reverse osmosis system 10 and a secondary reverse osmosis system 11 are provided inside the zero-emission unit 8 to perform osmotic filtration on the heavy metal wastewater, and then the treated wastewater is evaporated by the evaporation system 12. The wastewater treatment equipment 1 is made of PP polypropylene material. The physicochemical reaction unit 4 and the physicochemical treatment sedimentation unit 5 can perform physical and chemical reactions on the heavy metal wastewater, and then perform sedimentation treatment. The precision filtration unit 6 can be used to perform precision filtration on the wastewater after the reaction, and the sludge disposal unit 7 can filter the fine sludge inside the wastewater;

[0035] When in use, the wastewater treatment equipment 1 is modularized into units to reduce the floor space, while the overall appearance is beautiful and simple. The use of PP polypropylene material can make the wastewater treatment equipment 1 have a good anti-corrosion effect. The heavy metal wastewater can be finally filtered through the ultrafiltration system 9, the first-level reverse osmosis system 10 and the second-level reverse osmosis system 11, and then evaporated by the evaporation system 12.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heavy metal wastewater treatment device, characterized in that: The heavy metal wastewater treatment device comprises: a wastewater treatment device (1), a feed frame (2) is arranged on the surface of the wastewater treatment device (1), a filter plate (3) is arranged inside the feed frame (2), and a physicochemical reaction unit (4), a physicochemical treatment sedimentation unit (5), a precision filtration unit (6), and a sludge disposal unit (7) are arranged inside the wastewater treatment device (1); A zero-emission unit (8) is provided with an ultrafiltration system (9), a primary reverse osmosis system (10), a secondary reverse osmosis system (11) and an evaporation system (12).

2. A heavy metal wastewater treatment device according to claim 1, characterized in that: The surface of the feed frame (2) is provided with a placement groove (13), a second support rod (14) is arranged in the placement groove (13), a buffer spring (15) is sleeved on the surface of the second support rod (14), and the filter plate (3) is sleeved on the second support rod (14).

3. A heavy metal wastewater treatment device according to claim 2, characterized in that: One end of the buffer spring (15) is fixedly connected to the lower surface of the filter plate (3), and the other end of the buffer spring (15) is fixedly connected to the surface of the placement groove (13). A support rod (16) is arranged on the inner side of the feed frame (2), and the support rod (16) is fixed to the side of the feed frame (2) by bolts. A scraper (17) is sleeved on the surface of the support rod (16), and the scraper (17) can clean the surface of the filter plate (3).

4. A heavy metal wastewater treatment device according to claim 1, characterized in that: The outer side of the feed frame (2) is provided with a guide rod (18), the surface of the guide rod (18) is sleeved with a bracket (19) and a spring (20), one end of the bracket (19) is provided with a sealing plate (21), and the side of the sealing plate (21) is provided with a sealing strip (22), and the sealing plate (21) can be used to seal the side of the feed frame (2), one end of the spring (20) is fixedly connected to the surface of the bracket (19), and the other end of the spring (20) is fixedly connected to the surface of the guide rod (18), and one end of the support rod (16) passes through the sealing plate (21).

5. A heavy metal wastewater treatment device according to claim 4, characterized in that: The wastewater treatment equipment (1) is made of PP polypropylene material. The physicochemical reaction unit (4) and the physicochemical treatment sedimentation unit (5) can perform physical and chemical reactions on the heavy metal wastewater, and then perform sedimentation treatment. The precision filtration unit (6) can perform precision filtration on the wastewater after the reaction, and the sludge disposal unit (7) can perform filtering treatment on the fine sludge in the wastewater.

6. A heavy metal wastewater treatment device according to claim 5, characterized in that: The zero-emission unit (8) is located inside the wastewater treatment equipment (1). An ultrafiltration system (9), a primary reverse osmosis system (10) and a secondary reverse osmosis system (11) are provided in the zero-emission unit (8) to perform osmotic filtration on the heavy metal wastewater, and then an evaporation system (12) is used to evaporate the treated wastewater.

7. A heavy metal wastewater treatment system, characterized in that: A heavy metal wastewater treatment device comprising the heavy metal wastewater treatment device according to any one of claims 1 to 6.

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