An apparatus for improving the treatment of experimental waste liquids

Abstract

The utility model provides a device for improving experimental waste liquid treatment belongs to waste liquid treatment technical field, including work table, kjeldahl, pool, sewer, lye bucket, RO water bucket, waste liquid bucket, high liquid level controller, centrifugal pump, pH meter and sensor, in the utility model, the pipeline between centrifugal pump and waste liquid bucket is installed with high liquid level controller, high liquid level controller monitors the liquid level of waste liquid bucket, when the liquid level of waste liquid bucket is too high, centrifugal pump will arrange waste liquid to waste liquid treatment system, prevent waste liquid bucket liquid level from being too high and overflowing outside the bucket, install pH meter on waste liquid bucket, determine the pH value of waste liquid in waste liquid bucket regularly, add dilute hydrochloric acid to waste liquid bucket according to pH automatically, carry out waste liquid pH value adjustment, judge whether the pH value of waste liquid reaches neutral range, reach neutral range and start centrifugal pump, carry out automatic liquid discharge, avoid the trouble and possible harm caused by manual waste liquid pouring.

Description

Technical Field

[0001] This utility model belongs to the field of waste liquid treatment technology, and in particular relates to a device for improving the treatment of experimental waste liquid. Background Technology

[0002] The FOSS Kjeldahl nitrogen analyzer is an instrument used to determine the total nitrogen content in a sample. The main steps of the experiment are as follows: 1. Digestion: Place the sample to be tested, concentrated sulfuric acid (98%), and a catalyst (such as potassium sulfate or copper sulfate) in a digestion tube. Heat the mixture to 200°C to 420°C and maintain this temperature for 4 hours. During digestion, the concentrated sulfuric acid decomposes organic matter under the action of the catalyst, converting organic nitrogen into inorganic nitrogen, mainly ammonia nitrogen. At the same time, the ammonia gas produced during digestion is condensed and collected at the bottom of the digestion tube. 2. Distillation: Add 50 mL of 40% sodium hydroxide solution to the digested solution to make the digested solution strongly alkaline. Then, pass steam into the digestion tube again to heat the digested solution, causing the ammonia gas in the digested solution to escape from the solution. The ammonia gas is then guided to the receiving flask through the distillation apparatus and reacts with the boric acid solution to form ammonium borate. 3. Titration: The received ammonium borate is neutralized by dilute hydrochloric acid. When all the ammonia is neutralized, the pH value of the solution will change. The titration endpoint is determined by the color change of the indicator. The total nitrogen content in the sample is calculated based on the volume of standard hydrochloric acid consumed, and the protein content of the sample is calculated based on the total nitrogen content. 4. Discharge: The digested waste liquid is discharged into the waste liquid tank.

[0003] Current problems: 1. The waste liquid in the waste liquid tank needs to be neutralized with hydrochloric acid to a neutral state before it can be discharged into the sewer. It is not convenient to automatically adjust the pH value of the waste liquid. Second, the waste liquid after digestion contains a large amount of alkaline solution, which cannot be directly discharged into the sewer. Third, the waste liquid tank has a large capacity, and when pouring the waste liquid, the alkaline solution is easily spilled outside the tank or onto the ground, polluting the environment and potentially causing personal injury. Therefore, it is essential to invent a device to improve the treatment of experimental waste liquid. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an improved device for treating experimental waste liquid, comprising a workbench, a Kjeldahl nitrogen analyzer, and a waste liquid tank. The Kjeldahl nitrogen analyzer is installed on one side above the workbench; the waste liquid tank is installed in the middle position below the workbench. It also includes a centrifugal pump, a pH meter, and a sensor. The pH meter is installed on the lower outside of the waste liquid tank, and the detection end of the pH meter is located inside the lower part of the waste liquid tank. The centrifugal pump is installed on the lower side of the workbench and is connected to the lower inside of the waste liquid tank through a pipe. The sensor is installed between the centrifugal pump and the pH meter and is connected to the centrifugal pump and the pH meter respectively through wires.

[0005] Preferably, a high liquid level controller is installed on the pipeline between the centrifugal pump and the waste liquid tank, and the detection end of the high liquid level controller is located inside the waste liquid tank.

[0006] Preferably, a water tank is installed on the side of the workbench away from the Kjeldahl nitrogen analyzer, and a drain pipe is installed on the lower side of the water tank, and the drain pipe is connected to a centrifugal pump through a pipeline.

[0007] Preferably, an alkali tank and an RO water tank are installed on the lower side of the workbench near the Kjeldahl nitrogen analyzer, and the alkali tank and the RO water tank are connected to the workbench through pipes.

[0008] Preferably, a power supply cabinet is installed on the inner side of the workbench, and the power supply cabinet is electrically connected to the Kjeldahl nitrogen analyzer, high liquid level controller, centrifugal pump, pH meter and sensor respectively through wires.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1. In this utility model, a high liquid level controller is installed on the pipeline between the centrifugal pump and the waste liquid tank. The high liquid level controller monitors the liquid level of the waste liquid tank. When the liquid level of the waste liquid tank is too high, the centrifugal pump discharges the waste liquid to the waste liquid treatment system to prevent the waste liquid tank from overflowing due to excessive liquid level. 2. In this utility model, a pH meter is installed on the waste liquid tank to measure the pH value of the waste liquid in the tank at regular intervals. Based on the pH, dilute hydrochloric acid is automatically added to the waste liquid tank to adjust the pH value of the waste liquid. It is determined whether the pH value of the waste liquid has reached the neutral range. If it has reached the neutral range, the centrifugal pump is started to automatically drain the liquid, eliminating the trouble and possible harm caused by manually emptying the waste liquid. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the existing technology.

[0011] Figure 2 This is a structural schematic diagram of the box assembly of this utility model.

[0012] Figure 3 This is the utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0013] In the picture: 1. Workbench; 2. Kjeldahl nitrogen analyzer; 3. Water tank; 4. Drain pipe; 5. Alkali tank; 6. RO water tank; 7. Waste liquid tank; 8. High liquid level controller; 9. Centrifugal pump; 10. pH meter; 11. Sensor. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings: Example: As attached Figure 1 To be continued Figure 3 As shown This invention provides an improved device for treating experimental waste liquid, comprising a workbench 1, a Kjeldahl nitrogen analyzer 2, and a waste liquid tank 7. The Kjeldahl nitrogen analyzer 2 is installed on one side above the workbench 1; the waste liquid tank 7 is installed in the middle position below the workbench 1. The device for improving the treatment of experimental waste liquid also includes a centrifugal pump 9, a pH meter 10, and a sensor 11. The pH meter 10 is installed on the lower outside of the waste liquid tank 7, and the detection end of the pH meter 10 is located inside the lower part of the waste liquid tank 7. The centrifugal pump 9 is installed on the lower side of the workbench 1, and the centrifugal pump 9 is connected to the lower part of the waste liquid tank 7 through a pipe. The sensor 11 is installed between the centrifugal pump 9 and the pH meter 10, and the sensor 11 is connected to the centrifugal pump 9 and the pH meter 10 respectively through wires. The pH meter 10 is installed on the waste liquid tank 7 to measure the pH value of the waste liquid in the waste liquid tank 7 at regular intervals. According to the pH, dilute hydrochloric acid is automatically added to the waste liquid tank 7 to adjust the pH value of the waste liquid. It is determined whether the pH value of the waste liquid has reached the neutral range. If the pH value has reached the neutral range, the centrifugal pump 9 is started to automatically drain the liquid, eliminating the trouble and possible harm caused by manually emptying the waste liquid.

[0015] In this embodiment, a high liquid level controller 8 is installed on the pipeline between the centrifugal pump 9 and the waste liquid tank 7. The detection end of the high liquid level controller 8 is located inside the waste liquid tank 7. The high liquid level controller 8 monitors the liquid level of the waste liquid tank 7. When the liquid level of the waste liquid tank 7 is too high, the centrifugal pump 9 discharges the waste liquid to the waste liquid treatment system to prevent the liquid level of the waste liquid tank 7 from overflowing.

[0016] In this embodiment, a water tank 3 is installed on the side of the workbench 1 away from the Kjeldahl nitrogen analyzer 2, and a drain pipe 4 is installed on the lower side of the water tank 3. The drain pipe 4 is connected to the centrifugal pump 9 through a pipe.

[0017] In this embodiment, an alkali tank 5 and an RO water tank 6 are installed on the lower side of the workbench 1 near the Kjeldahl nitrogen analyzer 2. The alkali tank 5 and the RO water tank 6 are connected to the workbench 1 through pipes.

[0018] In this embodiment, a power supply cabinet is installed on the inner side of the workbench 1, and the power supply cabinet is electrically connected to the Kjeldahl nitrogen analyzer 2, the high liquid level controller 8, the centrifugal pump 9, the pH meter 10 and the sensor 11 through wires.

[0019] Working principle In this invention, a pH meter 10 is installed on the waste liquid tank 7 to periodically measure the pH value of the waste liquid in the tank 7. Dilute hydrochloric acid is automatically added to the waste liquid tank 7 according to the pH value to adjust the pH value of the waste liquid. The pH value of the waste liquid is then determined to be within the neutral range. If the pH value is within the neutral range, the centrifugal pump 9 is activated to automatically drain the waste liquid, eliminating the trouble and potential harm caused by manually emptying the waste liquid. A high liquid level controller 8 is installed on the pipeline between the centrifugal pump 9 and the waste liquid tank 7. The high liquid level controller 8 monitors the liquid level in the waste liquid tank 7. When the liquid level in the waste liquid tank 7 is too high, the centrifugal pump 9 discharges the waste liquid to the waste liquid treatment system to prevent the waste liquid tank 7 from overflowing due to excessive liquid level.

[0020] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. An apparatus for improving the treatment of experimental waste liquid, comprising a workbench (1), a Kjeldahl nitrogen analyzer (2), and a waste liquid tank (7), wherein the Kjeldahl nitrogen analyzer (2) is installed on one side above the workbench (1); and the waste liquid tank (7) is installed in the middle position below the workbench (1), characterized in that: It also includes a centrifugal pump (9), a pH meter (10) and a sensor (11). The pH meter (10) is installed on the lower side of the outside of the waste liquid tank (7), and the detection end of the pH meter (10) is located inside the lower part of the waste liquid tank (7). The centrifugal pump (9) is installed on the lower side of the workbench (1), and the centrifugal pump (9) is connected to the lower part of the inside of the waste liquid tank (7) through a pipe. The sensor (11) is installed between the centrifugal pump (9) and the pH meter (10), and the sensor (11) is connected to the centrifugal pump (9) and the pH meter (10) respectively through wires.

2. The apparatus for improving the treatment of experimental waste liquid as described in claim 1, characterized in that: A high liquid level controller (8) is installed on the pipeline between the centrifugal pump (9) and the waste liquid tank (7), and the detection end of the high liquid level controller (8) is located inside the waste liquid tank (7).

3. The apparatus for improving the treatment of experimental waste liquid as described in claim 1, characterized in that: A water tank (3) is installed on the side of the workbench (1) away from the Kjeldahl nitrogen analyzer (2). A drain pipe (4) is installed on the lower side of the water tank (3), and the drain pipe (4) is connected to the centrifugal pump (9) through a pipe.

4. The apparatus for improving the treatment of experimental waste liquid as described in claim 1, characterized in that: An alkali tank (5) and an RO water tank (6) are installed on the lower side of the workbench (1) near the Kjeldahl nitrogen analyzer (2). The alkali tank (5) and the RO water tank (6) are connected to the workbench (1) through pipes.

5. The apparatus for improving the treatment of experimental waste liquid as described in claim 2, characterized in that: The inner side of the workbench (1) is equipped with a power supply cabinet, which is electrically connected to the Kjeldahl nitrogen analyzer (2), the high liquid level controller (8), the centrifugal pump (9), the pH meter (10) and the sensor (11) through wires.

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