Sludge settling performance testing device

Abstract

The utility model discloses a sludge settling performance testing device which comprises a base and a testing measuring cylinder, the testing measuring cylinder is fixedly installed on the upper side of the base, a sealing cover is arranged on the upper side of the testing measuring cylinder, a stirring mechanism is arranged on the upper side of the sealing cover and comprises a driving motor, a stirring shaft and stirring blades, and the driving motor is fixedly installed on the upper side of the sealing cover. The stirring shaft is fixedly installed at the output end of the driving motor and located in the testing measuring cylinder, the stirring blades are fixedly installed on the peripheral side of the stirring shaft, and the cleaning scraper is fixedly installed on the peripheral side of the stirring shaft. According to the sludge settling performance testing device provided by the utility model, sewage and sludge in the sewage can be stirred through the arranged stirring mechanism, so that the sludge floats, and the conditions that the operation time is too long, activated sludge starts to settle in a constant volume process, timing is delayed and a measurement result is influenced are avoided.

Description

Technical Field

[0001] This utility model relates to the field of sludge settling technology, specifically to a sludge settling performance testing device. Background Technology

[0002] In wastewater treatment, microorganisms are widely used to decompose organic pollutants in water under aerobic conditions, thereby purifying the water. The basic process employed is the activated sludge process. Activated sludge is an aggregate of various microorganisms. First, pollutants are degraded and microbial cells proliferate in an aerobic biological treatment tank. Then, solid-liquid separation is achieved in a secondary sedimentation tank, ensuring that the microorganisms are returned to the aerobic biological treatment tank for further degradation of pollutants. To ensure a sufficient number of microorganisms in the aerobic biological treatment tank, the settling performance of the activated sludge becomes a crucial parameter for ensuring the normal operation of the treatment process.

[0003] Sludge settling performance is a crucial monitoring indicator for daily operation and maintenance in the wastewater treatment industry, ensuring effluent compliance. Currently, the traditional method for monitoring sludge settling performance involves taking a 1000mL water sample in a 1000mL graduated cylinder, allowing it to stand for 30 minutes, and then observing the sludge settling. This is used as a predictive basis for effluent quality control. The volume ratio (V / S) is calculated by multiplying the V / S reading by 100%. Since V / S is affected by the sludge concentration (MLSS), dividing V / S by MLSS yields the Sludge Index (SVI), a universally applicable indicator for characterizing activated sludge settling performance in wastewater treatment.

[0004] When using graduated cylinders for volume determination, if the operation time is too long, the activated sludge will begin to settle during the process, causing a delay in timing and affecting the measurement results. Therefore, there is an urgent need to design a sludge settling performance testing device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a sludge settling performance testing device to address the aforementioned shortcomings in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A sludge settling performance testing device includes a base and a test measuring cylinder. The test measuring cylinder is fixedly installed on the upper side of the base. A sealing cover is provided on the upper side of the test measuring cylinder. A stirring mechanism is provided on the upper side of the sealing cover. The stirring mechanism includes a drive motor, a stirring shaft, and stirring blades. The drive motor is fixedly installed on the upper side of the sealing cover. The stirring shaft is fixedly installed at the output end of the drive motor and is located inside the test measuring cylinder. The stirring blades are fixedly installed around the stirring shaft. A cleaning scraper is fixedly installed around the stirring shaft and fits against the inner wall of the test measuring cylinder.

[0008] The number of stirring blades is several, and the number of cleaning scrapers is four, with the four cleaning scrapers and the several stirring blades being staggered.

[0009] A fixing mechanism is provided between the sealing cover and the test cylinder. The fixing mechanism includes an upper sealing plate, a lower sealing plate, and L-shaped locking blocks, and there are several L-shaped locking blocks.

[0010] The upper sealing plate is fixedly installed on the periphery of the sealing cover, and the lower sealing plate is fixedly installed on the upper periphery of the test measuring cylinder. The upper sealing plate and the lower sealing plate are in contact. The L-shaped locking block is fixedly installed on the lower side of the upper sealing plate. A locking groove is opened on the periphery of the lower sealing plate, and an insertion port is opened on the upper side of one end of the locking groove. The L-shaped locking block is locked into the locking groove through the insertion port.

[0011] A measuring scale plate is provided on one side of the test cylinder, and an ultrasonic sensor and an illumination lamp are fixedly installed on the lower side of the sealing cover. The illumination lamp corresponds to the measuring scale plate.

[0012] A water inlet pipe is provided on the upper side of the sealing cap, a drain outlet is provided on the lower side of the test measuring cylinder, a water outlet pipe is fixedly installed on the lower side of the test measuring cylinder, and a control valve is provided around the water outlet pipe.

[0013] In the above technical solution, the sludge settling performance testing device provided by this utility model has the following beneficial effects:

[0014] (1) The sludge settling performance testing device provided by this utility model can stir the sewage and sludge in the sewage through the set stirring mechanism, so that the sludge floats up, avoiding the situation that the operation time is too long and the activated sludge has already started to settle during the volume fixation process, which will cause the timing to be delayed and affect the measurement results, thereby improving the accuracy of the testing device when it is used.

[0015] (2) The sludge settling performance testing device provided by this utility model, through the setting of the fixing mechanism, makes it easy for the staff to fix and disassemble the sealing cover, thereby making it easier for the staff to carry out maintenance work on the ultrasonic sensor, thus improving the convenience of the device when in use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a sludge settling performance testing device according to the present invention.

[0018] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of a sludge settling performance testing device of this utility model.

[0019] Figure 3 This is an exploded view of the sealing cap and test cylinder provided in an embodiment of the sludge settling performance testing device of this utility model.

[0020] 1. Base; 2. Test measuring cylinder; 3. Sealing cap; 4. Stirring mechanism; 5. Water inlet pipe; 6. Water outlet pipe; 7. Control valve; 8. Measuring scale plate; 9. Fixing mechanism; 10. Drive motor; 11. Stirring shaft; 12. Stirring blade; 13. Cleaning scraper; 14. Drain outlet; 15. Ultrasonic sensor; 16. Irradiation lamp; 17. Upper sealing plate; 18. Lower sealing plate; 19. L-shaped locking block; 20. Locking groove; 21. Insertion port. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-3 As shown in the figure, the sludge settling performance testing device provided by this utility model includes a base 1 and a test cylinder 2. The test cylinder 2 is fixedly installed on the upper side of the base 1. A sealing cover 3 is provided on the upper side of the test cylinder 2. A stirring mechanism 4 is provided on the upper side of the sealing cover 3. The stirring mechanism 4 includes a drive motor 10, a stirring shaft 11, and stirring blades 12. The drive motor 10 is fixedly installed on the upper side of the sealing cover 3. The stirring shaft 11 is fixedly installed on the output end of the drive motor 10 and is located inside the test cylinder 2. The stirring blades 12 are fixedly installed around the stirring shaft 11. Various other components are fixedly installed around the stirring shaft 11. The cleaning scraper 13 is attached to the inner wall of the test measuring cylinder 2. There are several stirring blades 12 and four cleaning scrapers 13. The four cleaning scrapers 13 and several stirring blades 12 are staggered. A measuring scale plate 8 is provided on one side of the test measuring cylinder 2. An ultrasonic sensor 15 and an illumination lamp 16 are fixedly installed on the lower side of the sealing cover 3. The illumination lamp 16 corresponds to the measuring scale plate 8. A water inlet pipe 5 is provided on the upper side of the sealing cover 3. A drain outlet 14 is opened on the lower side of the test measuring cylinder 2. A water outlet pipe 6 is fixedly installed on the lower side of the test measuring cylinder 2. A control valve 7 is provided around the water outlet pipe 6.

[0023] Specifically, in this embodiment, the inlet pipe 5 is connected to a metering pump via an external pipe. The metering pump is then started to deliver wastewater through the inlet pipe 5 into the test measuring cylinder 2. The metering pump can quantitatively deliver 1000 mL of wastewater. During the sludge settling performance test, the drive motor 10 is started to rotate the stirring shaft 11. The rotation of the stirring shaft 11 drives several stirring blades 12 to rotate, which in turn stirs the wastewater and the sludge within it, causing the sludge to float. Then, the drive motor 10 is stopped, allowing the sludge to slowly settle. After 30 minutes of stillness, the ultrasonic sensor 15 can detect the sludge at a certain frequency (typically around 20). An ultrasonic wave (above kHz) is emitted, which propagates downwards as a sound wave. When it encounters the bottom of the sludge, part of the wave is absorbed by the sludge, and the other part is reflected back to the ultrasonic sensor 15. The ultrasonic sensor 15 receives the reflected wave from the sludge layer and can record the time from emission to reception of the ultrasonic wave. The sludge settling performance testing device is also equipped with a data processing module. The ultrasonic sensor 15 transmits the recorded time to the data processing module, which processes the data. Based on the known installation height of the ultrasonic sensor and the measured distance, the height between the water surface and the sensor can be calculated. Then, by comparing the water surface height and the sludge settling height, the actual settling state of the sludge can be obtained. The test measuring cylinder 2 is illuminated by the illumination lamp 16, allowing manual inspection via the measuring scale plate 8. After completion, the wastewater can be discharged through the outlet pipe 6. The control valve 7 is located on the lower side of the test measuring cylinder 2 and rotates the stirring blade 12 and the cleaning scraper 13 via the stirring shaft 11, which can prevent sludge residue from remaining in the test measuring cylinder 2.

[0024] This utility model provides a sludge settling performance testing device. A fixing mechanism 9 is provided between the sealing cover 3 and the test measuring cylinder 2. The fixing mechanism 9 includes an upper sealing plate 17, a lower sealing plate 18, and L-shaped locking blocks 19. There are several L-shaped locking blocks 19. The upper sealing plate 17 is fixedly installed on the periphery of the sealing cover 3, and the lower sealing plate 18 is fixedly installed on the upper periphery of the test measuring cylinder 2. The upper sealing plate 17 and the lower sealing plate 18 are in contact. The L-shaped locking blocks 19 are fixedly installed on the lower side of the upper sealing plate 17. The lower sealing plate 18 has a slot 20 on its periphery. One end of the slot 20 has an insertion port 21. The L-shaped locking blocks 19 are engaged in the slot 20 through the insertion port 21.

[0025] In another embodiment of this utility model, by inserting the L-shaped card block 19 into the socket 21 and then rotating the sealing cover 3, the sealing cover 3 can be fixed so that the L-shaped card block 19 is rotated into the card slot 20.

[0026] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A sludge setting performance testing device comprising a base (1) and a test cylinder (2), characterized in that, The test cylinder (2) is fixedly installed on the upper side of the base (1), the upper side of the test cylinder (2) is provided with a sealing cover (3), the upper side of the sealing cover (3) is provided with a stirring mechanism (4), the stirring mechanism (4) comprises a driving motor (10), a stirring shaft (11) and a stirring paddle (12), the driving motor (10) is fixedly installed on the upper side of the sealing cover (3), the stirring shaft (11) is fixedly installed on the output end of the driving motor (10), the stirring shaft (11) is located in the test cylinder (2), the stirring paddle (12) is fixedly installed on the circumferential side of the stirring shaft (11), the circumferential side of the stirring shaft (11) is fixedly installed with a cleaning scraper (13), and the cleaning scraper (13) is attached to the inner wall of the test cylinder (2).

2. The device for testing sludge setting performance according to claim 1, wherein, The number of the stirring paddles (12) is several, the number of the cleaning scrapers (13) is four, and the four cleaning scrapers (13) are disposed in a staggered manner with the several stirring paddles (12).

3. The device for testing sludge setting performance according to claim 1, wherein, The sealing cover (3) and the test cylinder (2) are provided with a fixing mechanism (9), the fixing mechanism (9) comprises an upper sealing plate (17), a lower sealing plate (18) and L-shaped clamping blocks (19), and the number of the L-shaped clamping blocks (19) is several.

4. The device for testing sludge setting performance according to claim 3, wherein, The upper sealing plate (17) is fixedly installed on the circumferential side of the sealing cover (3), the lower sealing plate (18) is fixedly installed on the upper end of the test cylinder (2), the upper sealing plate (17) is attached to the lower sealing plate (18), the L-shaped clamping blocks (19) are fixedly installed on the lower side of the upper sealing plate (17), the circumferential side of the lower sealing plate (18) is provided with a clamping groove (20), one end of the clamping groove (20) is provided with a socket (21) on the upper side, and the L-shaped clamping blocks (19) are clamped in the clamping groove (20) through the socket (21).

5. A device for testing sludge setting performance according to claim 4, wherein One side of the test cylinder (2) is provided with a measurement scale plate (8), the lower side of the sealing cover (3) is fixedly installed with an ultrasonic sensor (15) and an irradiation lamp (16), and the irradiation lamp (16) corresponds to the measurement scale plate (8).

6. The device of claim 1, wherein, The upper side of the sealing cover (3) is provided with a water inlet pipe (5), the lower side of the test cylinder (2) is provided with a drain port (14), the lower side of the test cylinder (2) is fixedly installed with a water outlet pipe (6), and the circumferential side of the water outlet pipe (6) is provided with a control valve (7).

Images