BOD5 dilution water aeration filtering device

Abstract

The utility model relates to a BOD5 dilution water aeration filtering device, which belongs to the technical field of water quality detection and comprises an air pump, an exhaust port of the air pump is connected with a filtering device, and the filtering device is used for purifying air exhausted by the air pump and is connected with an air washing device through a guide pipe A; the gas washing device can be used for precipitating a small amount of powder and other particulate matters brought out by the filtering device so as to achieve the effect of secondary purification, and the rear end of the gas washing device is connected with a dilution water storage bottle; a multi-stage purification module is arranged in the filtering device; according to the BOD5 dilution water aeration filtering device disclosed by the utility model, the filtering device and the gas washing device are arranged behind the air pump, so that air is purified, impurities are effectively prevented from being mixed into dilution water in an aeration process, and the accuracy of a BOD5 detection result is ensured.

Description

Technical Field

[0001] The utility model relates to a BOD5 dilution water aeration and filtering device, belonging to the technical field of water quality detection. Background Art

[0002] According to the standard "HJ505-2009 Water Quality Five-Day Biochemical Oxygen Demand (BOD5) Determination Dilution and Inoculation Method", when the dilution method is used to test BOD5 in water, the test result of the blank sample cannot exceed 0.5mg / L. After testing, it was found that after forced aeration, if the impurities in the diluted water are not filtered, the consumption of dissolved oxygen (DO) will increase under the action of bacterial proliferation, resulting in an increase in the blank BOD5 concentration. During the aeration process, impurities such as particulate matter, volatile organic compounds (VOCs), oxidants and metal elements in the air will enter the diluent, causing it to be contaminated, which has a great impact on the BOD5 test results. Utility Model Content

[0003] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide a BOD5 dilution water aeration and filtration device, which can effectively prevent the dilution water from being mixed with impurities during the aeration process and ensure the accuracy of the BOD5 detection results.

[0004] The BOD5 dilution water aeration and filtration device described in the utility model comprises an air pump, the exhaust port of the air pump is connected to the filtration device, the filtration device is used to purify the air discharged by the air pump, the filtration device is connected to the washing device through the conduit A, the washing device can precipitate a small amount of powder and other particulate matter brought out by the filtration device to achieve a secondary purification effect, and the rear end of the washing device is connected to the dilution water storage bottle; a multi-stage purification module is arranged inside the filtration device.

[0005] The technical solution of the utility model is to provide a BOD5 dilution water aeration and filtration device, in which a filtration device and an air washing device are sequentially arranged behind an air pump to purify the air, ensure the cleanliness of the aeration gas, and avoid the dilution water from being mixed with impurities during the aeration process.

[0006] Preferably, the filtering device is provided with three modules inside. The first module is primary filter cotton, which is used to absorb large particles of dust, metal elements, etc. in the air to prevent subsequent modules from being blocked; the second module is activated carbon, which is used to absorb volatile organic compounds (VOCs) and harmful gases in the air; the third module is high-efficiency filter cotton, which is used to filter out powder and other particulate matter brought out by the activated carbon in the second module.

[0007] Preferably, the gas washing device includes a gas washing bottle, a sealing stopper is installed at the mouth of the gas washing bottle to prevent impurities from falling into the bottle, an air inlet is provided on the sealing stopper, a conduit A passes through the air inlet and extends to a position close to the bottom of the gas washing bottle, and a bell mouth is provided at the outlet end of the conduit A to slow down the air flow rate at the outlet end to prevent the airflow from impacting the dust settled at the bottom of the bottle and causing the dust to rise and escape.

[0008] Preferably, an air outlet is provided on one side of the bottleneck of the washing bottle, and the air outlet is connected to the dilution water storage bottle through a conduit B, the conduit B extends to a position close to the bottom of the dilution water storage bottle, and an aeration head for aeration is installed at the end of the conduit B.

[0009] Preferably, the inlet and outlet of the filter device are provided with threads to facilitate disassembly and replacement.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The BOD5 dilution water aeration and filtration device described in the utility model purifies the air by arranging a filtration device and an air washing device behind an air pump, thereby effectively preventing the dilution water from being mixed with impurities during the aeration process and ensuring the accuracy of the BOD5 detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] In the figure: 1. air pump; 2. filter device; 21. thread; 22. primary filter cotton; 23. activated carbon; 24. high-efficiency filter cotton; 3. gas washing device; 31. gas washing bottle; 32. sealing bottle stopper; 33. air outlet; 4. dilution water storage bottle; 5. conduit A; 51. bell mouth; 6. conduit B; 61. aeration head. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with specific embodiments.

[0015] However, the description of the present invention is merely an embodiment of structural and even functional description, and the scope of rights of the present invention is not limited by the embodiments described in the text.

[0016] For example, multiple embodiments may have multiple changes and multiple forms, and it should be understood that the scope of rights of the present utility model includes equivalents that can realize the technical idea.

[0017] like Figure 1As shown, this embodiment is implemented by the following technical scheme: it includes an air pump 1, the exhaust port of the air pump 1 is connected to the filter device 2, the filter device 2 is used to purify the air exhausted by the air pump 1, the filter device 2 is connected to the scrubber 3 through the conduit A5, the scrubber 3 can precipitate a small amount of powder and other particulate matter brought out by the filter device to achieve the effect of secondary purification, and the rear end of the scrubber 3 is connected to the dilution water storage bottle 4; the filter device 2 is provided with a multi-stage purification module.

[0018] In summary, the filter device 2 is provided with three modules inside. The first module is a primary filter cotton 22, which is used to absorb large dust particles, metal elements, etc. in the air to prevent subsequent modules from being blocked; the second module is activated carbon 23, which is used to absorb volatile organic compounds (VOCs) and harmful gases in the air. The mesh size of the activated carbon is 12×40 and the particle size is about 1mm; the third module is a high-efficiency filter cotton 24, which is used to filter out powder and other particles brought out by the activated carbon in the second module. The inlet and outlet of the filter device 2 are provided with threads 21 to facilitate disassembly and replacement.

[0019] The scrubbing device 3 includes a scrubbing bottle 31, which is made of glass. A sealing bottle plug 32 is installed at the mouth of the scrubbing bottle to prevent impurities from falling into the bottle. An air inlet is provided on the sealing bottle plug 32. A conduit A5 passes through the air inlet and extends to a position close to the bottom of the scrubbing bottle. A bell mouth 51 is provided at the outlet end of the conduit A5 to slow down the air flow rate at the outlet end and prevent the airflow from impacting the dust deposited at the bottom of the bottle and causing the dust to rise and escape.

[0020] An air outlet 33 is provided on one side of the neck of the washing bottle, and the air outlet 33 is connected to the dilution water storage bottle 4 through a conduit B6. The conduit B6 extends to a position close to the bottom of the dilution water storage bottle 4, and an aeration head 61 for aeration is installed at the end of the conduit B6.

[0021] The working process of the utility model is:

[0022] The air pump 1 delivers air to the filter device 2, which processes impurities, metal elements, volatile organic compounds (VOCs), etc. in the air, and then sends the processed air to the scrubber 3 through the conduit A5 to precipitate a small amount of powder and other particles brought out of the filter device 2. After the air is purified twice, the clean air is sent to the dilution water storage bottle 4 through the conduit B6 to aerate the dilution water.

[0023] Of course, the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and any equivalent changes and improvements made by ordinary technicians in the technical field within the essential scope of the present invention shall fall within the scope of the patent coverage of the present invention.

Claims

1. A BOD5 dilution water aeration and filtration device, characterized in that: The invention comprises an air pump (1), wherein the exhaust port of the air pump (1) is connected to a filter device (2) for purifying air, the filter device (2) is connected to an air washing device (3) via a conduit A (5), and the rear end of the air washing device (3) is connected to a dilution water storage bottle (4); a multi-stage purification module is arranged inside the filter device (2).

2. The BOD5 dilution water aeration and filtration device according to claim 1, characterized in that: The filtering device (2) is provided with three modules inside. The first module is a primary filter cotton (22) for absorbing large dust particles and metal elements; the second module is activated carbon (23) for absorbing harmful gases; and the third module is a high-efficiency filter cotton (24).

3. The BOD5 dilution water aeration and filtration device according to claim 1, characterized in that: The degassing device (3) comprises a degassing bottle (31), a sealing bottle plug (32) is installed at the mouth of the degassing bottle, an air inlet is arranged on the sealing bottle plug (32), a conduit A (5) passes through the air inlet and extends to a position close to the bottom of the degassing bottle, and a bell mouth (51) for slowing down the air flow rate is arranged at the outlet end of the conduit A (5).

4. The BOD5 dilution water aeration and filtration device according to claim 3, characterized in that: An air outlet (33) is provided on one side of the bottleneck of the washing bottle (31), and the air outlet (33) is connected to the dilution water storage bottle (4) through a conduit B (6). The conduit B (6) extends to a position close to the bottom of the dilution water storage bottle, and an aeration head (61) for aeration is installed at the end of the conduit B (6).

5. The BOD5 dilution water aeration and filtration device according to claim 1, characterized in that: The inlet and outlet of the filtering device (2) are provided with threads (21).

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