A device for treating waste acid in pesticide production

Abstract

The utility model relates to a kind of waste acid treatment device for pesticide production, it includes waste acid neutralization reaction system and sedimentation treatment system, waste acid neutralization reaction system is provided with sedimentation treatment system behind, sedimentation treatment system left side is provided with purification treatment system, sedimentation treatment system right side is provided with secondary falling-film absorption system, secondary falling-film absorption system is provided with primary falling-film absorption system behind;Waste acid solution is transported by conveying pipeline, waste acid neutralization reaction system is communicated with conveying pipeline by water inlet pipe, control switch is provided on water inlet pipe;Waste acid neutralization reaction system is communicated with sedimentation treatment system by water outlet pipe, sedimentation treatment system is respectively communicated with purification treatment system, secondary falling-film absorption system and primary falling-film absorption system;The utility model has the advantages of reasonable structure, using neutralization treatment, high work efficiency, mechanical adaptability regulation brush wash, high safety factor.

Description

Technical Field

[0001] This utility model belongs to the field of waste acid treatment technology, specifically relating to a waste acid treatment device for pesticide production. Background Technology

[0002] Pesticides refer to chemically synthesized substances or mixtures of substances derived from biological or other natural sources used to prevent and control diseases, insects, weeds, rodents, and other harmful organisms that threaten agriculture and forestry, as well as to purposefully regulate the growth of plants and insects. They are widely used in agricultural, forestry, and animal husbandry production, environmental and household sanitation pest control and disease prevention, and industrial product mildew and insect prevention. Pesticide waste acid refers to the waste acidic water (such as sulfuric acid, hydrochloric acid, phosphoric acid, etc.) discharged by pesticide factories during pesticide production. It is highly corrosive, has high COD, and may contain heavy metals or organic pollutants. Furthermore, the quality and quantity of waste acid water are unstable, posing a significant environmental pollution risk. The pollution is often severe and has a foul odor, irritating the human respiratory tract and mucous membranes. It is highly toxic and has a high concentration of pollutants, therefore it requires active treatment and cannot be directly discharged. In addition, waste acid treatment devices need to be cleaned after long-term use. If manual scrubbing is used directly, the residue of waste acid and other treated materials can easily cause corrosion, poisoning, and other personal injuries, making it impossible to guarantee the safety and health of personnel. Therefore, it is very necessary to provide a waste acid treatment device for pesticide production that has a reasonable structure, adopts neutralization treatment, has high working efficiency, mechanically adaptable scrubbing, and a high safety factor. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a waste acid treatment device for pesticide production that has a reasonable structure, adopts neutralization treatment, has high working efficiency, mechanical adaptability adjustment brushing, and a high safety factor.

[0004] The purpose of this utility model is achieved as follows: a waste acid treatment device for pesticide production, comprising a waste acid neutralization reaction system and a precipitation treatment system. The precipitation treatment system is located downstream of the waste acid neutralization reaction system. A purification treatment system is located to the left of the precipitation treatment system, and a secondary falling film absorption system is located to the right of the precipitation treatment system. A primary falling film absorption system is located downstream of the secondary falling film absorption system. Waste acid is transported through a conveying pipeline. The waste acid neutralization reaction system is connected to the conveying pipeline through an inlet pipe, and a control switch is installed on the inlet pipe. The waste acid neutralization reaction system is connected to the precipitation treatment system through an outlet pipe. The precipitation treatment system is connected to the purification treatment system, the secondary falling film absorption system, and the primary falling film absorption system, respectively.

[0005] The waste acid neutralization reaction system includes a support frame, on which multiple neutralization tanks are arranged at intervals. Each neutralization tank is equipped with a stirring motor, and each neutralization tank is equipped with a liquid delivery pump on one side. One end of the liquid delivery pump is connected to the neutralization tank through a ball valve, and the other end is connected to the sedimentation treatment system through a corresponding water outlet pipe.

[0006] The sedimentation treatment system includes a sedimentation tank, a filtration tank located above the sedimentation tank, an equalization tank located on one side of the sedimentation tank, an electrolysis tank located behind the equalization tank, the electrolysis tank being connected to the equalization tank via a drain pipe, and the electrolysis tank being connected to one of the water outlet pipes.

[0007] A horizontal pipe is installed above the interior of the equalization tank. The horizontal pipe is connected to at least one outlet pipe. One end of the horizontal pipe passes through the equalization tank and connects to the filtration tank, while the other end opens inside the equalization tank. The upper part of the sedimentation tank is connected to the purification system. Both the sedimentation tank and the equalization tank are connected to the secondary falling film absorption system, and the electrolysis tank is connected to the primary falling film absorption system.

[0008] The purification system includes a purification tank. A support plate is provided on one side of the upper part of the purification tank. A first vertical pump is installed on the support plate. One end of the first vertical pump is connected to a first butterfly valve pipe through a double flange straight pipe, and the other end is connected to a first U-shaped pipe through a flange right-angle pipe. The first U-shaped pipe is connected to a sedimentation tank.

[0009] The secondary falling film absorption system includes a secondary falling film absorption tank. A second vertical pump is installed inside the secondary falling film absorption tank. One end of the second vertical pump is connected to the secondary falling film absorption tank through a second U-shaped pipe, and the other end is connected to the lower part of the sedimentation tank and the regulating tank through a double butterfly valve three-way pipe.

[0010] The primary falling film absorption system includes a primary falling film absorption tank. A third vertical pump is installed inside the primary falling film absorption tank. One end of the third vertical pump is connected to the lower part of the electrolytic cell through a third butterfly valve pipe, and the other end is connected to the primary falling film absorption tank through a third U-shaped pipe. A precision filter is installed between the third vertical pump and the third U-shaped pipe.

[0011] It also includes a cleaning system, which includes an AC motor, a main shaft located below the AC motor, a spring sleeved on the lower part of the main shaft, adjustable arms mounted on both sides of the upper part of the spring, and each adjustable arm connected to the main shaft via a set of support rods. Each adjustable arm has a side brush plate mounted at its end.

[0012] The adjustable arms are all connected to the side brush plates via hinge seats; a bottom brush plate is installed at the bottom end of the main shaft, and the bottom brush plate is connected to the main shaft via a coupling seat.

[0013] The beneficial effects of this utility model are as follows: This utility model is a waste acid treatment device for pesticide production. In use, this utility model has a reasonable structural design and adopts a waste acid neutralization reaction system, a precipitation treatment system, a purification treatment system, a two-stage falling film absorption system, and a falling film absorption system to remove heavy metal ions from waste acid by multiple methods, so that the waste acid solution is effectively purified, saving resources, reducing pollution, and effectively saving enterprises' waste liquid treatment costs. This utility model has the advantages of reasonable structure, neutralization treatment, high working efficiency, mechanical adaptability adjustment brushing, and high safety factor. Attached Figure Description

[0014] Figure 1 This is a front view of the present invention.

[0015] Figure 2 This is a perspective view of the present invention. Figure 1 .

[0016] Figure 3 This is a perspective view of the present invention. Figure 2 .

[0017] Figure 4 This is a schematic diagram of the cleaning system of this utility model.

[0018] Figure 5 This is a perspective view of the cleaning system of this utility model.

[0019] In the diagram: 1. Waste acid neutralization reaction system; 11. Support frame; 12. Neutralization tank; 13. Stirring motor; 14. Liquid delivery pump; 15. Ball valve; 2. Sedimentation treatment system; 21. Sedimentation tank; 22. Filtration tank; 23. Equalization tank; 24. Electrolytic cell; 25. Horizontal pipe; 26. Drainage pipe; 3. Purification treatment system; 31. Purification tank; 32. Support plate; 33. First vertical pump; 34. First butterfly valve pipe; 35. First U-shaped pipe; 4. Secondary falling film absorption system; 41. Secondary falling film absorption tank; 42. Second vertical pump; 43. 44. Second U-shaped pipe, 5. Double butterfly valve tee pipe, 51. First-stage falling film absorption system, 52. First-stage falling film absorption tank, 53. Third vertical pump, 54. Third butterfly valve pipe, 55. Third U-shaped pipe, 6. Precision filter, 7. Conveying pipe, 8. Inlet pipe, 9. Control switch, 10. Outlet pipe, 10. Cleaning system, 101. AC motor, 102. Main shaft, 103. Spring, 104. Adjustable arm, 105. Support rod, 106. Side brush plate, 107. Hinge seat, 108. Bottom brush plate, 109. Coupling seat. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings. Example 1

[0021] like Figure 1-3As shown, a waste acid treatment device for pesticide production includes a waste acid neutralization reaction system 1 and a precipitation treatment system 2. The precipitation treatment system 2 is located downstream of the waste acid neutralization reaction system 1. A purification treatment system 3 is located to the left of the precipitation treatment system 2, and a secondary falling film absorption system 4 is located to the right of the precipitation treatment system 2. A primary falling film absorption system 5 is located downstream of the secondary falling film absorption system 4. Waste acid is transported through a conveying pipe 6. The waste acid neutralization reaction system 1 is connected to the conveying pipe 6 through an inlet pipe 7, and a control switch 8 is installed on the inlet pipe 7. The waste acid neutralization reaction system 1 is connected to the precipitation treatment system 2 through an outlet pipe 9. The precipitation treatment system 2 is connected to the purification treatment system 3, the secondary falling film absorption system 4, and the primary falling film absorption system 5, respectively.

[0022] The waste acid neutralization reaction system 1 includes a support 11, on which a plurality of neutralization tanks 12 are arranged at intervals. Each neutralization tank 12 is equipped with a stirring motor 13. Each neutralization tank 12 is equipped with a liquid delivery pump 14 on one side. One end of the liquid delivery pump 14 is connected to the neutralization tank 12 through a ball valve 15, and the other end is connected to the sedimentation treatment system 2 through a corresponding water outlet pipe 9.

[0023] In this embodiment, lime, sodium hydroxide, or calcium carbonate or other alkaline reactants can be added to the neutralization tank to neutralize the waste acid liquid to pH 6-9.

[0024] The sedimentation treatment system 2 includes a sedimentation tank 21, a filter tank 22 is arranged above the sedimentation tank 21, an equalization tank 23 is arranged on one side of the sedimentation tank 21, and an electrolysis tank 24 is arranged behind the equalization tank 23. The electrolysis tank 24 is connected to the equalization tank 23 through a drain pipe 26, and the electrolysis tank 24 is connected to one of the water outlet pipes 9.

[0025] A horizontal pipe 25 is installed above the interior of the regulating tank 23. The horizontal pipe 25 is connected to at least one outlet pipe 9. One end of the horizontal pipe 25 passes through the regulating tank 23 and is connected to the filter tank 22, while the other end is open inside the regulating tank 23. The upper part of the sedimentation tank 21 is connected to the purification system 3. Both the sedimentation tank 21 and the regulating tank 23 are connected to the secondary falling film absorption system 4. The electrolysis cell 24 is connected to the primary falling film absorption system 5.

[0026] The purification system 3 includes a purification tank 31. A support plate 32 is provided on one side of the upper part of the purification tank 31. A first vertical pump 33 is installed on the support plate 32. One end of the first vertical pump 33 is connected to a first butterfly valve pipe 34 through a double flange straight pipe, and the other end is connected to a first U-shaped pipe 35 through a flange right angle pipe. The first U-shaped pipe 35 is connected to the sedimentation tank 21.

[0027] The secondary falling film absorption system 4 includes a secondary falling film absorption tank 41. A second vertical pump 42 is installed inside the secondary falling film absorption tank 41. One end of the second vertical pump 42 is connected to the secondary falling film absorption tank 41 through a second U-shaped pipe 43, and the other end is connected to the lower part of the sedimentation tank 21 and the regulating tank 23 through a double butterfly valve three-way pipe 44.

[0028] The primary falling film absorption system 5 includes a primary falling film absorption tank 51. A third vertical pump 52 is installed inside the primary falling film absorption tank 51. One end of the third vertical pump 52 is connected to the lower part of the electrolytic cell 24 through a third butterfly valve pipe 53, and the other end is connected to the primary falling film absorption tank 51 through a third U-shaped pipe 54. A precision filter 55 is installed between the third vertical pump 52 and the third U-shaped pipe 54.

[0029] In this embodiment, upon opening the control switch, the waste acid solution sequentially enters multiple neutralization tanks of the waste acid neutralization reaction system through the conveying pipe and the inlet pipe for neutralization treatment. A stirring motor agitates the solution, accelerating the neutralization process and improving its uniformity. Then, the ball valve is opened, and the liquid pump delivers the solution to the sedimentation treatment system through the outlet pipe. The neutralized waste liquid is then sent to the electrolytic cell through one outlet pipe and to the horizontal pipe through the other three outlet pipes. One end of the waste liquid in the horizontal pipe flows into the equalization tank, and the other end flows into the filtration tank. After filtration, it flows into the sedimentation tank, where filtration and sedimentation remove impurities. The waste liquid entering the equalization tank undergoes pH adjustment to become neutral water. The upper mixture then flows into the electrolytic cell through the drain pipe for further electrolysis. The waste liquid flowing into the electrolytic cell, under the action of the electrolysis device, neutralizes the heavy metals in the waste acid. Heavy components such as metal ions flow downwards, undergoing preliminary filtration through a precision filter before entering the primary falling film absorption system (while the supernatant is discharged from the clear liquid outlet) for initial fine filtration. The supernatant, after filtration and sedimentation in the sedimentation tank, enters the purification tank through the first U-shaped pipe for further purification. The lower waste acid, after filtration, sedimentation, and adjustment in the sedimentation and equalization tanks, enters the secondary falling film absorption tank of the secondary falling film absorption system through a double-butterfly valve three-way pipe for secondary fine filtration. The supernatant from the electrolytic cell and the supernatant from the sedimentation tank, along with other supernatants treated by the purification system, are collected and discharged into a storage tank for reuse or discharge after meeting standards. Additionally, waste liquid containing heavy metal ions such as iron, copper, and lead ions flowing from the electrolytic cell into the primary falling film absorption system and from the sedimentation system into the secondary falling film absorption system are collected and flow into a waste liquid tank for centralized and unified treatment.

[0030] This utility model is a waste acid treatment device for pesticide production. In use, this utility model has a reasonable structural design and adopts a waste acid neutralization reaction system 1, a precipitation treatment system 2, a purification treatment system 3, a two-stage falling film absorption system 4, and a falling film absorption system 5 to remove heavy metal ions from waste acid by multiple methods, so that the waste acid solution is effectively purified, saving resources, reducing pollution, and effectively saving enterprises' waste liquid treatment costs. This utility model has the advantages of reasonable structure, neutralization treatment, high working efficiency, mechanical adaptability adjustment brushing, and high safety factor. Example 2

[0031] like Figure 4-5 As shown, a waste acid treatment device for pesticide production includes a waste acid neutralization reaction system 1 and a precipitation treatment system 2. The precipitation treatment system 2 is located downstream of the waste acid neutralization reaction system 1. A purification treatment system 3 is located to the left of the precipitation treatment system 2, and a secondary falling film absorption system 4 is located to the right of the precipitation treatment system 2. A primary falling film absorption system 5 is located downstream of the secondary falling film absorption system 4. Waste acid is transported through a conveying pipe 6. The waste acid neutralization reaction system 1 is connected to the conveying pipe 6 through an inlet pipe 7, and a control switch 8 is installed on the inlet pipe 7. The waste acid neutralization reaction system 1 is connected to the precipitation treatment system 2 through an outlet pipe 9. The precipitation treatment system 2 is connected to the purification treatment system 3, the secondary falling film absorption system 4, and the primary falling film absorption system 5, respectively.

[0032] A waste acid treatment device for pesticide production also includes a cleaning system 10. The cleaning system 10 includes an AC motor 101, a main shaft 102 is arranged below the AC motor 101, a spring 103 is sleeved on the lower part of the main shaft 102, adjustable arms 104 are installed on both sides of the upper part of the spring 103, and the lower part of each adjustable arm 104 is connected to the main shaft 102 through a set of support connecting rods 105. A side brush plate 106 is installed at the end of each adjustable arm 104.

[0033] The adjustable arms 104 are all connected to the side brush plates 106 via hinge seats 107; a bottom brush plate 108 is installed at the bottom end of the main shaft 102, and the bottom brush plate 108 is connected to the main shaft 102 via a coupling seat 109.

[0034] In this embodiment, by adjusting the extension length of the adjustable arm, the side brush plate can be adjusted according to the different inner diameter specifications of the neutralization tank, so that it can effectively fit the inner wall of the neutralization tank, greatly improving its practicality and applicability. When the AC motor is started, the AC motor drives the side brush plate and the bottom brush plate to rotate through the main shaft, cleaning the inner wall and bottom of the neutralization tank. The support rod provides support force to the side brush plate during the cleaning process, ensuring that it can work stably and reliably. The spring provides a certain compensation effect, so that the side brush plate can adapt to the changes in the inner wall of the neutralization tank during the cleaning process, making it effectively fit the inner wall of the neutralization tank, greatly improving the cleaning effect.

[0035] This utility model relates to a waste acid treatment device for pesticide production. In use, this utility model features a rational structural design, employing a waste acid neutralization reaction system 1, a precipitation treatment system 2, a purification treatment system 3, a two-stage falling film absorption system 4, and a falling film absorption system 5. This achieves multiple methods for removing heavy metal ions from the waste acid, effectively purifying the waste acid solution, saving resources, reducing pollution, and significantly reducing waste liquid treatment costs for enterprises. Furthermore, this utility model can effectively clean the interior of the neutralization tank of the waste acid neutralization reaction system through a cleaning system, ensuring the energy-efficient and high-performance operation of the tank. This utility model has the advantages of a rational structure, neutralization treatment, high working efficiency, mechanically adaptable cleaning, and a high safety factor.

Claims

1. A waste acid treatment device for pesticide production, comprising a waste acid neutralization reaction system and a precipitation treatment system, characterized in that: A precipitation treatment system is installed downstream of the waste acid neutralization reaction system. A purification treatment system is installed to the left of the precipitation treatment system, and a secondary falling film absorption system is installed to the right of the precipitation treatment system. A primary falling film absorption system is installed downstream of the secondary falling film absorption system. Waste acid is transported through a conveying pipeline. The waste acid neutralization reaction system is connected to the conveying pipeline through an inlet pipe, which is equipped with a control switch. The waste acid neutralization reaction system is connected to the precipitation treatment system through an outlet pipe. The precipitation treatment system is connected to the purification treatment system, the secondary falling film absorption system, and the primary falling film absorption system.

2. The waste acid treatment device for pesticide production according to claim 1, characterized in that: The waste acid neutralization reaction system includes a support frame, on which multiple neutralization tanks are arranged at intervals. Each neutralization tank is equipped with a stirring motor, and each neutralization tank is equipped with a liquid delivery pump on one side. One end of the liquid delivery pump is connected to the neutralization tank through a ball valve, and the other end is connected to the sedimentation treatment system through a corresponding water outlet pipe.

3. The waste acid treatment device for pesticide production according to claim 2, characterized in that: The sedimentation treatment system includes a sedimentation tank, a filtration tank located above the sedimentation tank, an equalization tank located on one side of the sedimentation tank, an electrolysis tank located behind the equalization tank, the electrolysis tank being connected to the equalization tank via a drain pipe, and the electrolysis tank being connected to one of the water outlet pipes.

4. The waste acid treatment device for pesticide production according to claim 3, characterized in that: A horizontal pipe is installed above the interior of the equalization tank. The horizontal pipe is connected to at least one outlet pipe. One end of the horizontal pipe passes through the equalization tank and connects to the filtration tank, while the other end opens inside the equalization tank. The upper part of the sedimentation tank is connected to the purification system. Both the sedimentation tank and the equalization tank are connected to the secondary falling film absorption system, and the electrolysis tank is connected to the primary falling film absorption system.

5. The waste acid treatment device for pesticide production according to claim 4, characterized in that: The purification system includes a purification tank. A support plate is provided on one side of the upper part of the purification tank. A first vertical pump is installed on the support plate. One end of the first vertical pump is connected to a first butterfly valve pipe through a double flange straight pipe, and the other end is connected to a first U-shaped pipe through a flange right-angle pipe. The first U-shaped pipe is connected to a sedimentation tank.

6. The waste acid treatment device for pesticide production according to claim 5, characterized in that: The secondary falling film absorption system includes a secondary falling film absorption tank. A second vertical pump is installed inside the secondary falling film absorption tank. One end of the second vertical pump is connected to the secondary falling film absorption tank through a second U-shaped pipe, and the other end is connected to the lower part of the sedimentation tank and the regulating tank through a double butterfly valve three-way pipe.

7. The waste acid treatment device for pesticide production according to claim 6, characterized in that: The primary falling film absorption system includes a primary falling film absorption tank. A third vertical pump is installed inside the primary falling film absorption tank. One end of the third vertical pump is connected to the lower part of the electrolytic cell through a third butterfly valve pipe, and the other end is connected to the primary falling film absorption tank through a third U-shaped pipe. A precision filter is installed between the third vertical pump and the third U-shaped pipe.

8. The waste acid treatment device for pesticide production according to claim 1, characterized in that: It also includes a cleaning system, which includes an AC motor, a main shaft located below the AC motor, a spring sleeved on the lower part of the main shaft, adjustable arms mounted on both sides of the upper part of the spring, and each adjustable arm connected to the main shaft via a set of support rods. Each adjustable arm has a side brush plate mounted at its end.

9. A waste acid treatment device for pesticide production according to claim 8, characterized in that: The adjustable arms are all connected to the side brush plates via hinge seats; a bottom brush plate is installed at the bottom end of the main shaft, and the bottom brush plate is connected to the main shaft via a coupling seat.

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