Harmless cleaning treatment device for laboratory sewage

Abstract

The utility model discloses a harmless cleaning treatment device for laboratory sewage, which comprises a sewage collecting tank, a primary filtering unit is arranged at the upper end of the sewage collecting tank, the bottom end of the sewage collecting tank is connected to a settling tank through a water outlet pipeline I, a settling net is arranged at the bottom of the settling tank, and the sewage is settled and filtered by the settling net and then is introduced into a neutralizing tank; the water outlet end of the neutralization tank is connected with an adsorption tank through a water outlet pipeline II, a quartz sand layer and an activated carbon layer are arranged in the adsorption tank from bottom to top, the discharge end of the adsorption tank is connected to a clear liquid tank through a water outlet pipeline III, a filter screen is mounted in the clear liquid tank, and a purified water outlet pipeline is mounted on the clear liquid tank. According to the utility model, mineral sewage in laboratories of industrial and mining enterprises is precipitated, filtered, neutralized, adsorbed and purified, so that the technical problems of poor filtering effect and inconvenience in use of a sewage filter screen in the prior art are effectively solved, the industrial sewage discharge standard is met, secondary utilization can be realized, and the aims of saving water and treating water pollution are fulfilled.

Description

Technical Field

[0001] The utility model relates to laboratory sewage treatment and purification equipment technology, in particular to a laboratory sewage harmless cleaning treatment device. Background Art

[0002] Water is a non-renewable resource and an important resource that is indispensable for the sustainable development of society. With the rapid development of my country's industrial technology, the amount of industrial and domestic water is increasing. In the industrial production of many industrial and mining enterprises, a large amount of water resources will be consumed and a large amount of water resources will be wasted, and the accompanying water environment pollution will also follow. Sewage treatment is an environmental protection and energy-saving project, which has important practical significance for recycling resources, comprehensive utilization, saving water, reducing pollution and protecting nearby groundwater and river quality.

[0003] The sewage generated in the laboratories of industrial and mining enterprises is usually collected and then treated by adding certain expensive sewage purifiers and devices. This method cannot recycle the products after the reaction, nor can it update the filtration device in the sewage. It will cause a substantial increase in experimental costs and bring economic burdens to enterprises. If the wastewater generated after the test is directly discharged, the sewage will not only not be reasonably recycled, but also cause environmental pollution and fail to meet environmental protection requirements. Therefore, in view of the above situation, it is urgent to develop a laboratory sewage purification device. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects and shortcomings of the prior art and to provide a laboratory sewage harmless cleaning treatment device, which can precipitate, filter, neutralize, adsorb and purify the laboratory mineral sewage of industrial and mining enterprises, effectively solving the technical problems of poor filtering effect and inconvenient use of the sewage filter in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A harmless cleaning treatment device for laboratory sewage includes a sewage collection tank, characterized in that: a primary filtration unit is provided at the upper end of the sewage collection tank, the bottom end of the sewage collection tank is connected to a sedimentation tank through an outlet pipe 1, a sedimentation net is provided at the bottom of the sedimentation tank, the sewage is filtered through the sedimentation net and then passed into a neutralization tank, the outlet end of the neutralization tank is connected to an adsorption box through an outlet pipe 2, a quartz sand layer and an activated carbon layer are provided in the adsorption box from bottom to top, the discharge end of the adsorption box is connected to a clear liquid tank through an outlet pipe 3, a filter is installed in the clear liquid tank, and a clean water outlet pipe is installed on the clear liquid tank.

[0007] The primary filter unit is a double-layer stainless steel filter screen, and a filter screen is added in the middle of the double-layer stainless steel filter screen.

[0008] The primary filter unit is a cylindrical structure, with baffles provided at both ends of the cylinder, a mounting shaft provided in the middle of the baffle, and the mounting shaft on one side is a pipe structure connected to the cylinder, and a water inlet joint is installed at the outer end of the pipe, and the mounting shaft is rotatably installed at the mouth of the sewage collection tank through a mounting seat.

[0009] The cylinder is a frame structure, which is composed of long axes in the circumferential direction. The areas between adjacent long axes are equipped with filter screens, which are double-layer stainless steel filter screens. A filter screen is added in the middle of the double-layer stainless steel filter screen.

[0010] The water outlet end of the water outlet pipe 1 extends into the sedimentation tank, and a self-locking pressure valve is installed at the extending end.

[0011] A side advection hole (7) at the bottom of the sedimentation tank is connected to the neutralization tank (8).

[0012] A NaOH box is provided at the upper end of the neutralization tank, an observation hole is provided on the top of the NaOH box, the bottom end is connected to the lower end of the neutralization tank through an infusion tube, and an agitator is mounted at the lower end of the neutralization tank, and a conical valve corresponding to the liquid outlet of the neutralization tank is installed below the NaOH box.

[0013] Flow valves are installed on the second water outlet pipe and the third water outlet pipe respectively.

[0014] The filter screen in the clear liquid pool is a U-shaped filter screen, and a water pump is installed at the bottom end of the clean water outlet pipe, and the water pump is located above the middle of the U-shaped filter screen.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The utility model has a simple structure and low construction and installation costs. It treats laboratory sewage by collecting, settling, filtering, neutralizing, adsorbing and purifying. The clean water produced meets the requirements of domestic water and discharge and can be recycled for secondary use, which not only saves water resources but also meets environmental protection requirements.

[0017] (2) After the primary filter, sedimentation net, quartz sand, activated carbon, etc. have been used for a period of time and the amount of silt and trace metal substances has reached a certain amount, the staff will pull out the net, clean it, and install it for continued use. When the filter is damaged, it can be replaced in a targeted manner; installation and replacement are convenient and cost-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of a direct filtering mesh filter unit.

[0020] Figure 3 This is a schematic diagram of the structure of a cylindrical primary filtration unit installed on a sewage collection tank.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of a cylindrical filter unit.

[0022] Reference numerals:

[0023] 1. Sewage collection tank; 2. Primary filtration unit; 3. Sedimentation tank; 4. Sedimentation net; 5. Self-locking pressure valve; 6. Exhaust port; 7. Horizontal flow hole; 8. Neutralization tank; 9. Observation hole; 10. NaOH box; 11. Infusion tube; 12. Mixing motor; 13. Agitator; 14. Conical valve; 15. Flow valve; 16. Adsorption box; 17. Activated carbon layer; 18. Quartz sand layer; 19. Clear liquid tank; 21. U-shaped filter screen; 22. Water pump; 23. Clean water outlet pipe;

[0024] 201, cylinder; 202, baffle; 203, mounting shaft; 205, water inlet joint; 206, mounting seat; 207, long axis; 208, filter screen. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on 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.

[0026] See attached Figure 1-2 ;

[0027] A laboratory sewage harmless cleaning treatment device includes a sewage collection tank 1, the upper end of the sewage collection tank 1 is provided with a primary filtration unit 2, the bottom end of the sewage collection tank 1 is connected to a sedimentation tank 3 through an outlet pipe 1, a sedimentation net 4 is arranged at the bottom of the sedimentation tank 3, an exhaust port 6 is arranged at the top of the sedimentation tank 3, the sewage is filtered through the sedimentation net 4 and then passed into a neutralization tank 8, a side surface of the bottom of the sedimentation tank is connected to the neutralization tank 8 through a horizontal flow hole 7, the outlet end of the neutralization tank 8 is connected to an adsorption box 16 through an outlet pipe 2, and a quartz sand layer 18 and an activated carbon layer 17 are arranged from bottom to top in the adsorption box 16 The quartz sand and activated carbon with a strong pore structure degrade and remove the fine suspended matter, trace metals and a small amount of organic matter that have not been removed in the previous process, and throttling adsorb them to meet the discharge standards. The discharge end of the adsorption box 16 is connected to the clear liquid tank 19 through the outlet pipe three. The outlet pipes two and three are respectively equipped with flow valves 15. A filter screen is installed in the clear liquid tank 19, and a clean water outlet pipe 23 is installed on the clear liquid tank 19; the filter screen in the clear liquid tank 19 is a U-shaped filter screen 21, and a water pump 22 is installed at the bottom end of the clean water outlet pipe 23, and the water pump 22 is located above the middle of the U-shaped filter screen 21.

[0028] Furthermore, the primary filter unit 2 is a double-layer stainless steel filter, and a filter is added in the middle of the double-layer stainless steel filter, which can filter out various large-sized impurities in the sewage and is easy to replace; and the middle filter is a cotton sandwich filter, which mainly filters mud and sand in the water.

[0029] Further, the outlet end of the outlet pipe 1 extends into the sedimentation tank 3, and a self-locking pressure valve 5 is installed at the extending end. It opens when the one-way water pressure reaches and closes when the pressure decreases. The self-locking pressure is 0.2-0.5 MPa.

[0030] Furthermore, a NaOH box 10 is provided at the upper end of the neutralization tank 8, an observation hole 9 is provided at the top of the NaOH box 10, and the bottom end is connected to the lower end of the neutralization tank 8 through a liquid infusion tube 11, and an agitator 13 is mounted on the lower end of the neutralization tank 8, and the agitator 13 is driven by a mixing motor 12 above, and a conical valve 14 corresponding to the liquid outlet of the neutralization tank 8 is installed below the NaOH box 10. NaOH is an aqueous solution, the amount added is 15ml / m-30ml / m, and the mixing ratio with the liquid is 1:20. The added NaOH aqueous solution is food grade, and the pH value is adjusted between 8-9. Under alkaline conditions, it neutralizes the acid in the sewage and reacts with OH to generate hydroxide precipitation.

[0031] The filter unit 2 may also be a rotating cylinder structure, see 3-4;

[0032] The primary filter unit 2 is a cylindrical structure, with baffles 202 at both ends of the cylinder 201, a mounting shaft 203 in the middle of the baffle 202, and one side of the mounting shaft 203 is a pipe connected to the cylinder 201, and a water inlet joint 205 is installed at the outer end of the pipe, and the mounting shaft 203 is rotatably mounted at the mouth of the sewage collection tank through a mounting seat 206. A rotating cylindrical filter unit is set in the sewage collection tank 1, and sewage is introduced from the end into the cylinder for filtration. The filter screen cooperates with the cylinder, so that when there are impurities at one place in the circumferential direction of the cylinder, it can be rotated to another place for filtration, which can meet the requirements of continuous primary filtration.

[0033] Furthermore, if the cylinder 201 is a frame structure, it is composed of long axes 207 in the circumferential direction, and the areas between the adjacent long axes 207 are all equipped with filter screens 208, which are double-layer stainless steel filter screens, and a filter screen is added in the middle of the double-layer stainless steel filter screen. In this way, the filter screen at the upper end can be partially replaced in time, thereby ensuring the requirement of continuous filtration. At the same time, once the filter screen is blocked, it can rotate the angle to meet the maximum filtration efficiency. In order to ensure the stability of the cylinder during filtration, an external positioning structure can be added to position the cylinder, such as setting a positioning sleeve in the circumferential direction on the outside of the baffle at the end of the cylinder, and setting a retractable positioning rod outside the upper opening of the sewage collection tank.

[0034] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0035] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A laboratory sewage harmless cleaning treatment device, comprising a sewage collection tank (1), characterized in that: The upper end of the sewage collection tank (1) is provided with a primary filtration unit (2), the lower end of the sewage collection tank (1) is connected to a sedimentation tank (3) via an outlet pipe 1, a sedimentation net (4) is provided at the bottom of the sedimentation tank (3), the sewage is filtered through the sedimentation net (4) and then passed into a neutralization tank (8), the outlet end of the neutralization tank (8) is connected to an adsorption box (16) via an outlet pipe 2, a quartz sand layer (18) and an activated carbon layer (17) are provided in the adsorption box (16) from bottom to top, the discharge end of the adsorption box (16) is connected to a clear liquid tank (19) via an outlet pipe 3, a filter net is installed in the clear liquid tank (19), and a purified water outlet pipe (23) is installed on the clear liquid tank (19).

2. The laboratory sewage harmless cleaning treatment device according to claim 1 is characterized by: The primary filter unit (2) is a double-layer stainless steel filter screen, with a filter screen added in the middle of the double-layer stainless steel filter screen.

3. The laboratory sewage harmless cleaning treatment device according to claim 1 is characterized by: The primary filter unit (2) is a cylindrical structure, with baffles (202) provided at both ends of the cylindrical body (201), a mounting shaft (203) provided in the middle of the baffle (202), and the mounting shaft (203) on one side being a pipe (204) connected to the cylindrical body (201), and a water inlet joint (205) being installed at the outer end of the pipe (204), and the mounting shaft (203) being rotatably mounted at the mouth of the sewage collection tank via a mounting seat (206).

4. The laboratory sewage harmless cleaning treatment device according to claim 3 is characterized by: The cylinder (201) is a frame-type structure, which is composed of long axes (207) in the circumferential direction, and the areas between adjacent long axes (207) are all equipped with filter screens (208).

5. The laboratory sewage harmless cleaning treatment device according to claim 1 is characterized by: The water outlet end of the water outlet pipe 1 extends into the sedimentation tank (3), and a self-locking pressure valve (5) is installed at the extending end.

6. The laboratory sewage harmless cleaning treatment device according to claim 1 is characterized by: One side of the bottom of the sedimentation tank is connected to the neutralization tank (8) through an advection hole (7).

7. The laboratory sewage harmless cleaning treatment device according to claim 1 is characterized by: The upper end of the neutralization tank (8) is provided with a NaOH box (10), the top of the NaOH box (10) is provided with an observation hole (9), the bottom end is connected to the lower end of the neutralization tank (8) through a liquid infusion tube, and the lower end of the neutralization tank (8) is mounted with an agitator (13), and a conical valve (14) corresponding to the liquid outlet of the neutralization tank (8) is installed below the NaOH box (10).

8. The laboratory sewage harmless cleaning treatment device according to claim 1 is characterized by: The second water outlet pipe and the third water outlet pipe are respectively installed with flow valves (15).

9. The laboratory sewage harmless cleaning treatment device according to claim 1 is characterized by: The filter screen in the clear liquid pool (19) is a U-shaped filter screen (21), and a water pump (22) is installed at the bottom end of the clean water outlet pipe (23), and the water pump (22) is located above the middle of the U-shaped filter screen (21).

Images