Imidazapyr herbicide waste liquid separation device

Abstract

The utility model relates to the technical field of chemical production equipment, and discloses an imazapyr herbicide waste liquid separation device which comprises a separation tank, half of a tank body of the separation tank is buried underground, the top of the separation tank is provided with a feed port and a discharge port, and the feed port and the discharge port are respectively provided with a feed pipe and a discharge pipe; the bottom of the feeding pipe is arranged in the middle of the separation tank body; one end of the discharge pipe is arranged at the bottom in the separation tank body, and the other end of the discharge pipe penetrates through the top of the separation tank, is connected in series with the U-shaped pipe through the first n-shaped pipe, then is connected in series with a pipeline designed by the second n-shaped pipe and is communicated to the wastewater treatment device; a floating oil outlet is formed in one side of the upper part of the separation tank body and is communicated to a floating oil collecting tank through a floating oil pipeline; and the floating oil outlet is higher than the top of the second n-shaped pipe. The device is simple in structure, convenient to operate and good in separation effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical production equipment technical field, concretely relates to a kind of imidazole nicotinic acid herbicide waste liquid separation device. BACKGROUND

[0002] In the production process of imidazole nicotinic acid herbicide, a large amount of waste liquid will be produced, which contains a small amount of floating oil and a large amount of organic-containing wastewater. The floating oil in it can be reused if it is separated out, but if it is not separated and directly enters the waste liquid treatment system together with the waste liquid for treatment, it will increase the treatment difficulty and waste resources. The existing treatment method is to separate the floating oil from the waste liquid first, but the existing treatment equipment has the following problems: 1. The existing separation tank is provided with a discharge port at the bottom of the tank body, which is easy to cause leakage, especially after long-term use, the sealing element is aged or damaged, which increases the risk of environmental pollution; 2. The bottom of the existing separation tank is easy to accumulate sediment, which needs to be cleaned regularly, increasing the maintenance cost and workload; 3. The existing separation tank is arranged above the ground, and in high-latitude areas, the bottom of the tank will freeze in winter, affecting the normal operation of the equipment; 4. The floating oil separation effect of the existing separation tank is not good. After the waste liquid is left to stand, the waste liquid is discharged first through the bottom discharge port, and then the floating oil is discharged, during which the floating oil is easy to be discharged with the wastewater, and there will also be wastewater not discharged in time mixed in the floating oil, resulting in unsatisfactory treatment effect.

[0003] Therefore, the deficiencies of traditional equipment are solved, and the efficiency and safety of wastewater treatment are improved. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide an imidazole nicotinic acid herbicide waste liquid separation device that overcomes the technical defects of the prior art and has the characteristics of simple structure, easy operation and good separation effect.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0006] An imidazole nicotinic acid herbicide waste liquid separation device, comprising a half-tank body buried underground, a separation tank, a feed inlet and a discharge port are provided at the top of the separation tank, and a feed pipe and a discharge pipe are respectively provided at the feed inlet and the discharge port; the bottom of the feed pipe is arranged at the middle of the separation tank body; one end of the discharge pipe is arranged at the bottom of the separation tank body, and the other end is connected to a wastewater treatment device through a pipeline designed by connecting a U-shaped pipe in series with a first n-shaped pipe and then connecting a second n-shaped pipe in series; a floating oil outlet is provided on one side of the upper part of the separation tank body, and the floating oil outlet is connected to a floating oil collection tank through a floating oil pipeline; the height of the floating oil outlet is higher than the top of the second n-shaped pipe.

[0007] Preferably, the feed pipe is provided with a feed flow valve, the second n-shaped pipe end of the discharge pipe is provided with a discharge flow valve, and the floating oil pipeline is provided with a floating oil flow valve; the feed flow valve, the discharge flow valve and the floating oil flow valve are all connected to the DCS automatic control system.

[0008] Preferably, the top of the first n-shaped pipe is provided with a vacuum valve, and the top of the second n-shaped pipe is provided with a vent valve.

[0009] Further, the vacuum valve is connected to a vacuum pump through a pipeline (for generating negative pressure to extract wastewater when initially discharging), and the vent valve is connected to a vent pipe (for venting the pipeline to fill the pipeline with wastewater).

[0010] Preferably, the height of the floating oil outlet is 1-10 cm higher than the top of the second n-shaped pipe.

[0011] Further, the height of the floating oil outlet is 5 cm higher than the top of the second n-shaped pipe.

[0012] Preferably, the height difference between the bottom of the U-shaped pipe and the top of the second n-shaped pipe is 30-150 cm.

[0013] Preferably, the upper part of the tank body of the separation tank is provided with a window.

[0014] Due to the adoption of the above technical solutions, the present application has the following advantages:

[0015] The present application sets the discharge port to the top, overcoming the leakage risk caused by aging or damage of the sealing element in the prior art; the tank body of the separation tank is half buried in the ground, which can overcome the poor operation caused by freezing of the waste liquid through the heat preservation of the soil; the pipe opening of the discharge pipe is set at the bottom of the separation tank, and the water flow generated by the siphon phenomenon can carry away the bottom sediments, reducing the frequency of regular cleaning and thus reducing the maintenance cost and workload; the design of the pipeline and the flow valve can realize automatic discharge of floating oil and wastewater at regular intervals, ensuring the separation effect.

[0016] In summary, the present application has the characteristics of simple structure and good separation effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of an embodiment of the present application;

[0018] In the diagram, 1. Separation tank; 2. Feed pipe; 3. Discharge pipe; 4. First n-shaped pipe; 5. U-shaped pipe; 6. Second n-shaped pipe; 7. Floating oil collection tank; 8. Feed flow valve; 9. Discharge flow valve; 10. Floating oil flow valve; 11. Vacuum valve; 12. Vent valve; 13. Viewing window. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Example 1

[0021] like Figure 1 As shown, a waste liquid separation device for imidazole nicotinic acid herbicides includes a separation tank 1, half of which is buried underground. The top of the separation tank 1 is provided with an inlet (not marked) and an outlet (not marked), and the inlet and outlet are respectively provided with an inlet pipe 2 and an outlet pipe 3. The bottom of the inlet pipe 2 is located in the middle of the tank body of the separation tank 1. One end of the outlet pipe 3 is located at the bottom of the tank body of the separation tank 1, and the other end passes through the top of the separation tank 1 and is connected to a wastewater treatment device (not marked) through a pipeline designed by connecting a first n-shaped pipe 4 in series with a U-shaped pipe 5 and then in series with a second n-shaped pipe 6. A floating oil outlet (not marked) is provided on one side of the upper part of the tank body of the separation tank 1, and the floating oil outlet is connected to a floating oil collection tank 7 through a floating oil pipeline (not marked). The height of the floating oil outlet is higher than the top of the second n-shaped pipe 6.

[0022] The feed pipe 2 is equipped with a feed flow valve 8, the discharge pipe 3 is equipped with a discharge flow valve 9 at the end of the second n-shaped pipe 6, and the floating oil pipe is equipped with a floating oil flow valve 10; the first n-shaped pipe 4 is equipped with a vacuum valve 11 at the top, and the second n-shaped pipe 6 is equipped with a vent valve 12 at the top; the upper part of the separation tank 1 is equipped with a viewing window 13.

[0023] In practical application, when initially injecting waste liquid into separator 1, close the inlet flow valve 8, outlet flow valve 9, and floating oil flow valve 10. Inject the waste liquid until the liquid level is 20 cm above the top of the second n-shaped tube 6. Let it stand for a period of time, and the floating oil and wastewater will separate into layers. Because the floating oil content is relatively low, it will take about half a year to accumulate to about 20 cm. The initial floating oil layer is very thin, less than 10 cm thick, and does not need to be drained. Then, open the vacuum valve 11 to extract excess air from the tube and close the vacuum valve 11. Open the vent valve 12 and open the outlet flow valve 9. Using the siphon principle, the liquid level in the separator must be kept in balance with the top of the second n-shaped tube 6. The wastewater in separator 1 will then drain outwards.

[0024] Subsequently, drainage stops when the wastewater level drops below the top of the second n-shaped pipe 6; drainage resumes when the wastewater level rises above the top of the second n-shaped pipe 6. Drainage again stops when the wastewater level drops back to the top of the second n-shaped pipe 6; the entire process is automatic and requires no manual operation. The drain pipe inlet is at the bottom, preventing the discharge of floating oil.

[0025] The oil slick in the wastewater will slowly gather to the upper layer to form an oil slick layer when the wastewater is fully static in the large tank. When the oil slick layer reaches the oil slick outlet, the oil slick is discharged through the opened oil slick flow valve 10. The oil slick height is automatically adjusted by the density difference. The oil slick density is 0.8 and the wastewater density is 1.0. The wastewater liquid level in the tank is equal to the top height of the second n-shaped tube 6. The excess wastewater is discharged. When the oil slick in the tank increases, the pressure in the tank will make the liquid level of the oil slick layer increase with the increase of the oil slick. When the liquid level of the oil slick layer increases to the height of the oil slick outlet, the oil slick is discharged from the oil slick outlet.

[0026] The automatic control system can detect the discharge amount of the oil slick and the wastewater, so that the amount of the waste liquid can be quantitatively supplemented, and the oil-water separation of the waste liquid can be continuously carried out.

[0027] It should be understood that the embodiments are only used for illustrating the present application and are not used for limiting the scope of the present application. In addition, it should be understood that after reading the content taught by the present application, those skilled in the art can make various changes or modifications to the present application. These equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims

1. An imidazolinone herbicide waste liquid separation apparatus characterized by comprising: The application relates to a half-cylinder buried separation tank, which comprises a top part provided with a feeding inlet and a discharging outlet, wherein the feeding inlet and the discharging outlet are respectively provided with a feeding pipe and a discharging pipe; the bottom of the feeding pipe is arranged in the middle of the separation tank; one end of the discharging pipe is arranged at the bottom of the separation tank, and the other end is connected to a wastewater treatment device through a pipeline designed by connecting a first n-shaped pipe, a U-shaped pipe and a second n-shaped pipe in series; one side of the upper part of the separation tank is provided with an oil floating outlet, which is connected to an oil floating collection tank through an oil floating pipeline; the height of the oil floating outlet is higher than the top of the second n-shaped pipe.

2. The imidazolinone herbicide waste liquid separation apparatus of claim 1, wherein: A feeding flow valve is arranged on the feeding pipe, a discharging flow valve is arranged at the end of the second n-shaped pipe of the discharging pipe, and an oil floating flow valve is arranged on the oil floating pipeline; the feeding flow valve, the discharging flow valve and the oil floating flow valve are all connected to a DCS automatic control system.

3. The imidazolinone herbicide waste liquid separating device of claim 1, wherein: A vacuum valve is arranged at the top of the first n-shaped pipe, and a vent valve is arranged at the top of the second n-shaped pipe.

4. The imidazolinone herbicide waste separation apparatus of claim 1, wherein: The height of the oil floating outlet is 1-10 cm higher than the top of the second n-shaped pipe.

5. The imidazolinone herbicide waste separation apparatus of claim 1, wherein: The height difference between the bottom of the U-shaped pipe and the top of the second n-shaped pipe is 30-150 cm.

6. The imidazolinone herbicide waste separation apparatus of claim 1, wherein: A window is arranged on the upper part of the separation tank.

Images