Sampling and testing device for sewage plant aeration tank sludge-water mixture
By using a sample bottle with graduated lines in the sampling and testing device for mud-water mixture in aeration tank, the problems of high sampling volume and cumbersome testing procedures have been solved, achieving the effects of simplified operation, reduced safety risks and improved testing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU IND PARK QINGYUAN HUAYAN WATER
- Filing Date
- 2025-04-18
- Publication Date
- 2026-06-05
AI Technical Summary
In existing technologies, the sampling process of mud-water mixture samples in aeration tanks presents safety risks due to high sampling volume and problems such as cumbersome and inefficient testing procedures, which affect the accuracy and timeliness of the test results.
A sample bottle with graduated lines and its matching device were designed to directly collect a set amount of mud-water mixture sample in the aeration tank, and directly measure the sludge settling ratio after shaking in the laboratory. This simplifies the operation process and reduces the sampling volume and safety risks.
This simplified the testing process, improved testing efficiency, avoided sample waste, reduced safety risks, and ensured the accuracy and timeliness of test results.
Smart Images
Figure CN224327939U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a sampling and testing device for sludge-water mixture samples from aeration tanks in wastewater treatment plants. Background Technology
[0002] In urban wastewater treatment, the aeration tank, as the core treatment unit of the activated sludge process, directly affects the wastewater treatment effect. The sludge settling ratio (SV) is a key indicator for evaluating the performance of activated sludge in the aeration tank. By detecting the settling performance of the sludge-water mixture under specific conditions, it can reflect the sludge concentration, coagulation, and settling properties in real time, providing an important basis for process control.
[0003] According to the provisions of the "Sludge Settlement Ratio (SV) Volume Method" (Clause 5.9) in the current national standard CJ / T221-2023 "Standard Test Methods for Urban Sludge", the sludge-water mixture sample from the aeration tank needs to be tested daily, and each sample needs to be collected and measured in parallel three times. The sample volume for each test needs to be controlled between 900 and 1000 ml to ensure the accuracy of the test results.
[0004] Currently, the sampling and testing methods used in the laboratory are as follows: During the sampling process, samplers need to use 5-liter sampling buckets to collect sufficient samples on-site in the aeration tank. Taking a wastewater treatment plant as an example, which has two wastewater treatment plants with a total of 5 aeration tanks, the total amount of samples to be collected daily reaches 25 liters. Since aeration tanks are usually located on high platforms or have slippery environments, the handling of large-capacity sampling buckets not only increases the workload of operators but also poses potential safety hazards such as falls and slips due to excessive weight.
[0005] In addition, the 5-liter sampling volume far exceeds the 3 liters required for actual testing (3 parallel samples, about 1 liter each), resulting in a significant increase in sample transportation costs and storage pressure.
[0006] After the samples arrive at the laboratory, the testing process is cumbersome and time-consuming. The lab technician first needs to shake the sample in the 5-liter sampling container on the ground, then pour it into a larger plastic container for a second thorough mixing. Next, using tools, the mixed sample is individually dispensed into three 1-liter graduated cylinders for sedimentation ratio measurement. This process of transferring samples multiple times not only increases manual labor but also risks compromising sample homogeneity due to insufficient shaking or disturbance during dispensing, affecting the reliability of the test results. Furthermore, the cleaning, storage, and reuse of large-capacity containers consume laboratory space and resources, reducing testing efficiency.
[0007] In summary, the existing sampling and testing process for sludge-water mixtures in aeration tanks has two major problems: firstly, the high sampling volume and potential safety risks in the sampling process; and secondly, the cumbersome and inefficient laboratory testing procedures. These problems not only increase the workload of operators but may also adversely affect the accuracy of test data and the timeliness of result reporting. Utility Model Content
[0008] This utility model provides a sampling and testing device for sludge-water mixture samples from aeration tanks in wastewater treatment plants. It addresses the shortcomings of time-consuming and labor-intensive sampling of sludge-water mixture samples from aeration tanks in wastewater treatment plants, the waste caused by excessive sampling volume, and the low testing efficiency due to complex operation procedures. The device achieves the goal of avoiding sample waste, reducing sampling volume, lowering safety risks, simplifying the testing operation process, and improving testing efficiency.
[0009] This utility model provides a sampling and testing device for sludge-water mixture samples from aeration tanks in wastewater treatment plants, comprising:
[0010] The sample vial has graduation lines on it, and the graduation lines on the sample vial are transparent and visible.
[0011] Bottle cap, used to seal the sample bottle.
[0012] In addition, the sampling and testing device for sludge-water mixture samples from aeration tanks in wastewater treatment plants according to this utility model may also have the following additional technical features:
[0013] In some embodiments of this utility model, the sample bottle includes:
[0014] The scale lines are located on the bottle body;
[0015] Bottle neck connection: The bottle body is provided with a bottle neck connection, and the bottle cap and the bottle neck connection are detachably connected.
[0016] In some embodiments of this utility model, the sample bottle further includes:
[0017] The bottle mouth stop is fitted onto the bottle mouth connection part. During operation, the bottle cap abuts against the bottle mouth stop part.
[0018] In some embodiments of this utility model, it further includes:
[0019] The handle is rotatably connected to the bottle mouth stop.
[0020] In some embodiments of this utility model, it further includes:
[0021] The sealing gasket is located inside the bottle cap and abuts against the bottle opening during operation.
[0022] In some embodiments of this utility model, it further includes:
[0023] Hanging ring, attached to the side of the bottle.
[0024] In some embodiments of this utility model, it further includes:
[0025] Sampling frame, used to hold sample vials;
[0026] A sampling cover is used to cover the sampling frame, and the sampling cover has multiple limiting holes;
[0027] The sampling frame contains multiple fixing rings, and the central symmetrical lines of the multiple fixing rings and the multiple limiting holes are collinear.
[0028] In some embodiments of this utility model, it further includes:
[0029] The stop block is rotatably connected to the sampling frame. During operation, the stop block abuts against the sampling cover.
[0030] In some embodiments of this utility model, it further includes:
[0031] The counterweight has a slot on the bottom wall of the sampling frame, and the counterweight is placed in the slot.
[0032] In some embodiments of this utility model, it further includes:
[0033] The sampling cap has a handle.
[0034] In summary, this application includes the following beneficial technical effects: By setting graduation lines on the sample bottles and cooperating with the bottle caps, multiple sample bottles can be used directly for sampling when collecting mud-water mixed samples in the aeration tank. Each sample bottle contains a set amount of mud-water mixed sample. After being transported to the laboratory, the sample bottles can be shaken to evenly distribute the mud-water mixed sample before measuring the sludge settling ratio separately. This is more convenient and faster, eliminating the need for excessive sampling for testing, avoiding sample waste, reducing the sampling volume, lowering safety risks, reducing testing procedures, and increasing testing efficiency. Attached Figure Description
[0035] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0036] Figure 1 A perspective view of a sampling and testing device for a sludge-water mixture sample from an aeration tank in a wastewater treatment plant, according to some embodiments of the present invention, is shown schematically.
[0037] Figure 2 A cross-sectional view is schematically shown of a sampling and testing device for sludge-water mixture samples from an aeration tank in a wastewater treatment plant, according to some embodiments of the present invention.
[0038] Figure 3 A perspective view of the sample bottle of a sampling and testing device for a sludge-water mixture sample from an aeration tank in a wastewater treatment plant, according to some embodiments of the present invention, is shown schematically.
[0039] Figure 4 A cross-sectional view of the sample bottle of a sampling and testing device for a sludge-water mixture in an aeration tank of a wastewater treatment plant, according to some embodiments of the present invention, is shown schematically.
[0040] Figure label:
[0041] 1. Sampling frame; 11. Slot; 12. Cover slot; 2. Sampling cover; 21. Step; 3. Fixing ring; 4. Handle; 5. Stop block; 6. Sample bottle; 61. Bottle body; 62. Bottle cap; 63. Sealing gasket; 64. Bottle mouth connection part; 65. Bottle mouth stop part; 66. Handle; 67. Hanging ring; 68. Scale line; 7. Water outlet; 8. Limiting hole; 81. First sub-hole; 82. Second sub-hole; 9. Counterweight. Detailed Implementation
[0042] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[0043] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “” used herein may also indicate the inclusion of the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated, unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.
[0044] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.
[0045] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may also be rotated 90 degrees or in other orientations, and the spatial relative descriptors used in the text will be interpreted accordingly.
[0046] like Figures 1 to 4 As shown, according to an embodiment of the first aspect of this utility model, a sampling and testing device for a mixture of sludge and water in an aeration tank of a sewage treatment plant is proposed, including a sample bottle 6 and a bottle cap 62. The sample bottle 6 is provided with a scale line 68, the position of the scale line 68 on the sample bottle 6 is transparent and visible, and the bottle cap 62 is used to cover the sample bottle 6.
[0047] In the above embodiments, it should be noted that the bottle cap 62 and the sample bottle 6 are detachably connected by means of threaded connection or snap-fit; the sample bottle 6 can be made of transparent plastic material, transparent glass material, or other transparent materials; the maximum scale of the scale line 68 on the sample bottle 6 is 1000 ml; the minimum scale division value is 10 ml; there are scale lines and corresponding numerical markings at 100, 200, 300, 400, 500, 600, 700, 800, 900, and 1000 ml; the minimum scale division value is also clearly marked between different milliliter numbers; there should be 9 evenly distributed scale division value lines between every two whole hundred values; the scale markings are displayed from bottom to top, with 0 ml at the bottom (can be omitted), and 1000 ml at the top.
[0048] The technical effects achieved by the above embodiments are as follows: By setting a scale line 68 on the sample bottle 6 and cooperating with the bottle cap 62, multiple sample bottles 6 can be used directly for sampling when sampling mud-water mixture samples in the aeration tank. Each sample bottle 6 contains a set amount of mud-water mixture sample. After being carried to the laboratory, the sample bottle 6 can be shaken to evenly mix the mud-water mixture sample before measuring the sludge settling ratio separately. This is more convenient and faster, without the need for excessive sampling for testing. It avoids sample waste, reduces the sampling volume, reduces safety risks, and reduces the testing process while increasing testing efficiency.
[0049] Optional, such as Figures 1 to 4 As shown, the sample bottle 6 includes a bottle body 61 and a bottle mouth connection part 64. The bottle body 61 is provided with the bottle mouth connection part 64, the bottle cap 62 is detachably connected to the bottle mouth connection part 64, and the scale line 68 is provided on the bottle body 61.
[0050] In the above optional embodiments, it should be noted that the bottle cap 62 and the bottle mouth connection part 64 are connected by means of threaded connection or snap-fit, and the diameter of the bottle mouth connection part 64 is less than or equal to the diameter of the bottle body 61.
[0051] The advantages of the above optional embodiments are: the provision of the bottle mouth connecting part 64 increases the convenience of connecting the bottle cap 62 and the sample bottle 6.
[0052] Optional, such as Figures 1 to 4 As shown, the sample bottle 6 also includes a bottle mouth blocking part 65. The bottle mouth connecting part 64 is fitted with the bottle mouth blocking part 65. During operation, the bottle cap 62 abuts against the bottle mouth blocking part 65.
[0053] In the above optional embodiments, it should be noted that the bottle mouth blocking part 65 and the bottle mouth connecting part 64 are integrally formed; the bottle mouth connecting part 64 and the bottle body 61 are integrally formed.
[0054] The beneficial effects of the above optional embodiments are as follows: the bottle mouth blocking part 65 is provided so that after the bottle cap 62 is threaded or snapped with the bottle mouth connecting part 64, the surface of the bottle cap 62 can abut against the surface of the bottle mouth blocking part 65 to form a certain friction force to ensure the firmness of the connection between the bottle cap 62 and the sample bottle 6.
[0055] Optional, such as Figures 1 to 4 As shown, it also includes a handle 66, which is rotatably connected to the bottle mouth stop part 65.
[0056] Optional, such as Figures 1 to 4 As shown, it also includes a sealing gasket 63, which is disposed inside the bottle cap 62. During operation, the sealing gasket 63 abuts against the bottle mouth connection part 64.
[0057] Optional, such as Figures 1 to 4 As shown, it also includes a hanging ring 67, which is provided on the side of the bottle body 61.
[0058] In the above optional embodiments, it should be noted that the hanging ring 67 is connected to the bottle body 61 by welding, bonding, or integral molding.
[0059] The advantages of the above optional embodiments are as follows: by setting the hanging ring 67, when the sample bottle 6 needs to be sampled, the sampler can simply pull the rope and put the sample bottle 6 into the aeration tank to sample the mud-water mixture after the rope is wrapped around the hanging ring 67, thereby increasing the convenience of sampling.
[0060] Optional, such as Figure 1 and Figure 2 As shown, it also includes a sampling frame 1, a sampling cover 2, and a fixing ring 3. The sampling frame 1 is used to place the sample bottle 6, and the sampling cover 2 is used to cover the sampling frame 1. Multiple fixing rings 3 are provided inside the sampling frame 1, and multiple limiting holes 8 are provided on the sampling cover 2. The central symmetrical lines of the multiple fixing rings 3 and the multiple limiting holes 8 are collinear.
[0061] In the above optional embodiments, it should be noted that the sampling cover 2 is also provided with multiple water inlets 7. When sampling is required, the bottle bodies 61 of multiple sample bottles 6 are inserted one-to-one into multiple fixing rings 3, and then the sampling cover 2 is placed on the sampling frame 1. At this time, the bottle mouth connecting parts 64 of the sample bottles 6 are inserted one-to-one into multiple limiting holes 8 to limit the position of the multiple sample bottles 6. When the diameter of the bottle mouth connecting part 64 is less than the diameter of 61, the diameter of the limiting hole 8 is greater than or equal to the outer ring diameter of the bottle mouth connecting part 64 and less than the diameter of the bottle body 61. The sampling cover 2 and the sampling frame 1 are connected by screws or snaps. Water inlets 7 are provided at the bottom and side walls of the sampling frame 1 to prevent mud and water mixed samples from remaining in the sampling frame 1 during sampling.
[0062] When the diameter of the bottle mouth connection part 64 is equal to the diameter of 61, the diameter of the limiting hole 8 is smaller than the diameter of the bottle mouth connection part 64. The sample bottle 6 can be fixed by the fixing ring 3 and the sampling cap 2, which is relatively simple. Specifically, the sampling cap 2 is pressed on the top of the bottle mouth connection part 64, and the lower end of the bottle mouth connection part 64 is inserted into the fixing ring 3.
[0063] The sampling cover 2 is provided with a step 21, and the top of the sampling frame 1 is provided with a cover groove 12. When working, the step 21 overlaps the cover groove 12 so that the upper surface of the sampling frame 1 and the upper surface of the sampling cover 2 are on the same plane.
[0064] The limiting hole 8 includes a first sub-hole 81 and a second sub-hole 82. During operation, the bottle mouth connecting part 64 is inserted into the first sub-hole 81, and the blocking connecting part is inserted into the second sub-hole 82.
[0065] The advantages of the above optional embodiments are as follows: the combination of sampling frame 1, fixing ring 3, sampling cover 2 and limiting hole 8 realizes the reliable limitation of the position of sample bottle 6 in sampling frame 1, and at the same time realizes that multiple sample bottles 6 can be put into the aeration tank for sampling at the same time simply by wrapping the rope around sampling frame 1, and multiple sample bottles 6 that have been sampled can be taken out at the same time, which is very convenient and quick.
[0066] Optional, such as Figure 1 and Figure 2 As shown, it also includes a stop block 5, which is rotatably connected to the sampling frame 1. During operation, the stop block 5 abuts against the sampling cover 2.
[0067] In the above optional embodiments, it should be noted that during operation, the stop block 5 and the sampling cover 2 are interference-fitted, and the two sides of the stop block 5 are provided with arc transitions to ensure that the stop block 5 can be smoothly pressed on the sampling cover 2.
[0068] The advantages of the above optional embodiments are: the sampling cover 2 is prevented from falling off during sampling by setting the stop 5, thus ensuring the reliability of sampling.
[0069] Optional, such as Figure 1 and Figure 2 As shown, it also includes a counterweight 9, and a slot 11 is provided on the bottom wall of the sampling frame 1, in which the counterweight 9 is placed.
[0070] In the above optional embodiments, it should be noted that during operation, the counterweight 9 is located below the sample bottle 6, and the sample bottle 6 precisely limits the counterweight 9 to prevent it from falling during the sampling process; the counterweight 9 is made of a metal or non-metal material with a density greater than that of water.
[0071] The advantages of the above optional embodiments are as follows: by setting the counterweight 9, it can be ensured that the sample bottle 6 can be submerged in water during sampling to ensure the smooth progress of sampling and avoid the situation where the buoyancy of the water is greater than the weight of the sampling device, resulting in unsuccessful sampling.
[0072] Optional, such as Figure 1 and Figure 2 As shown, it also includes a handle 4, which is provided on the sampling cover 2.
[0073] In the above optional embodiments, it should be noted that the handle 4 and the sampling cover 2 are connected by means of screwing, welding or snap-fitting.
[0074] The advantages of the above optional embodiments are as follows: the handle 4 not only increases the convenience of taking the sampling cover 2, but also allows the rope to be tied to the handle 4 before sampling. After sampling, the sampler can also carry the handle 4 to bring back multiple sample bottles 6 with samples at once, which is very convenient and quick.
[0075] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.
Claims
1. A sampling and testing device for sludge-water mixture samples from an aeration tank in a wastewater treatment plant, characterized in that, include: Sample bottle (6), the sample bottle (6) is provided with scale lines (68), the scale lines (68) of the sample bottle (6) are transparent; Bottle cap (62) is used to cover the sample bottle (6); A sampling frame (1) is used to place the sample bottle (6); A sampling cover (2) is used to cover the sampling frame (1), and the sampling cover (2) is provided with multiple limiting holes (8). The sampling frame (1) is provided with a plurality of fixed rings (3), and the central symmetry lines of the plurality of fixed rings (3) and the plurality of limiting holes (8) are collinear.
2. The sampling and testing device for sludge-water mixture samples from aeration tanks in wastewater treatment plants according to claim 1, characterized in that, The sample vial (6) includes: Bottle body (61), the scale line (68) is provided on the bottle body (61); Bottle mouth connection part (64) is provided on the bottle body (61), and the bottle cap (62) is detachably connected to the bottle mouth connection part (64).
3. The sampling and testing device for sludge-water mixture samples from aeration tanks in wastewater treatment plants according to claim 2, characterized in that, The sample vial (6) also includes: The bottle mouth blocking part (65) is fitted onto the bottle mouth connecting part (64). During operation, the bottle cap (62) abuts against the bottle mouth blocking part (65).
4. The sampling and testing device for sludge-water mixture samples from aeration tanks in wastewater treatment plants according to claim 3, characterized in that, Also includes: The handle (66) is rotatably connected to the bottle mouth stop (65).
5. The sampling and testing device for sludge-water mixture samples from aeration tanks in wastewater treatment plants according to claim 3, characterized in that, Also includes: A sealing gasket (63) is disposed inside the bottle cap (62). During operation, the sealing gasket (63) abuts against the bottle mouth connection part (64).
6. The sampling and testing device for sludge-water mixture samples from aeration tanks in wastewater treatment plants according to claim 5, characterized in that, Also includes: A hanging ring (67) is provided on the side of the bottle body (61).
7. The sampling and testing device for sludge-water mixture samples from aeration tanks in wastewater treatment plants according to any one of claims 1-6, characterized in that, Also includes: The stop block (5) is rotatably connected to the sampling frame (1). During operation, the stop block (5) abuts against the sampling cover (2).
8. The sampling and testing device for sludge-water mixture samples from aeration tanks in wastewater treatment plants according to any one of claims 1-6, characterized in that, Also includes: The counterweight (9) is provided with a slot (11) on the bottom wall of the sampling frame (1), and the counterweight (9) is placed in the slot (11).
9. The sampling and testing device for sludge-water mixture samples from aeration tanks in wastewater treatment plants according to any one of claims 1-6, characterized in that, Also includes: The handle (4) is provided on the sampling cover (2).