Sludge reduction equipment with special structure for strengthening stable attachment of worms

Abstract

The invention discloses sludge reduction equipment with a special structure for strengthening stable attachment of worms, the sludge reduction equipment comprises a box body, a worm stuffing box, a porous conveyor belt, a sludge inlet assembly, a water inlet assembly, an aeration assembly and a drainage assembly, the worm stuffing box is connected with a fixing plate through a connecting rod, the fixing plate is provided with a mounting rod, the mounting rod is connected to the box body, and the porous conveyor belt is arranged on the mounting rod. Roll shafts are arranged on the periphery of the fixing plate in a penetrating mode, roller wheels are fixedly arranged on the four roll shafts in a sleeving mode, the four roller wheels are in transmission connection through a linkage belt, a plurality of hole grooves are formed in the porous conveying belt, a plurality of holes are evenly formed in the hole grooves, the porous conveying belt is installed on the roller wheels in a tensioning mode, and driving assemblies are in transmission connection with the roll shafts. The sludge inlet assembly and the water inlet assembly are both arranged above the porous conveyor belt, and the aeration assembly and the drainage assembly are both installed in the box body. According to the invention, efficient utilization and long-term stable operation of the worms are realized, the dispersibility and adhesion density of the worms are improved, and efficient and stable treatment of sewage sludge is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a sludge reduction device with a special structure for strengthening the stable attachment of worms. Background Art

[0002] In the sewage treatment process, a large amount of sludge will inevitably be produced. Untreated sludge contains a large amount of water, pollutants and harmful substances. If the sludge is simply piled up, landfilled or improperly incinerated, it is very likely to pose a serious threat to soil structure, water quality and air quality. In view of this, it is crucial to seek efficient and environmentally friendly sewage treatment strategies to reduce harmful components in sludge, alleviate the pressure caused by sludge accumulation, and reduce potential environmental risks in order to maintain the long-term stable operation of the sewage treatment system. Among them, realizing the resource utilization and reduction of sludge is an important issue that needs to be overcome urgently.

[0003] Using the predatory action of micro-animals to reduce sludge is considered a highly promising ecological reduction technology due to its advantages of low energy consumption, low cost and no secondary pollution. Worms in particular are highly adaptable to the environment, can survive in a relatively low temperature range and a variety of matrix environments, are easy to control in number, and are abundant in nature. As facultative aerobic organisms, worms perform well in sludge reduction and have the ability to attach and grow. Therefore, in the simultaneous treatment process of sewage and sludge, artificially introducing attached oligochaete worms, adding filler carriers to which the worms can attach, and ensuring the stability of their growth environment have become effective ways to achieve sludge reduction.

[0004] However, the current equipment used in the simultaneous treatment of sewage sludge generally faces the problems of easy loss, uneven distribution and unstable attachment of worms. Therefore, it is necessary to develop a sludge reduction equipment with a special structure to strengthen the stable attachment of worms, so as to reduce the worm loss rate during the long-term treatment of sewage sludge, improve the dispersion and attachment density of worms, and achieve efficient and stable treatment of sewage sludge. Summary of the invention

[0005] In order to solve the technical problems existing in the above-mentioned prior art, the present invention proposes a sludge reduction device with a special structure to strengthen the stable attachment of worms.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A sludge reduction device with a special structure to strengthen the stable attachment of worms, comprising a box body, a worm stuffing box, a porous conveyor belt, a mud inlet component, a water inlet component, an aeration component and a drainage component, both sides of the worm stuffing box are connected with fixed plates through connecting rods, two fixed plates are provided with mounting rods and are connected to the box body on the adjacent side, rollers are provided on the four sides of the fixed plate on the outside of the worm stuffing box, four rollers are fixedly sleeved with rollers, and the four rollers are connected by linkage belt transmission, a plurality of hole grooves inclined along the running direction of the porous conveyor belt are provided on the porous conveyor belt, and a plurality of holes are evenly provided in the hole grooves, the porous conveyor belt is tensioned and installed on the rollers, and the rollers are transmission-connected with a driving component, the mud inlet component and the water inlet component are arranged above the porous conveyor belt, and the aeration component and the drainage component are installed in the box body.

[0008] In a further technical solution, the top surface of the box body is open and inwardly inclined baffles are symmetrically arranged on both sides of the opening, installation grooves are opened on the two baffles, two installation rods are arranged in the installation grooves on the adjacent side, and gaps are left between the fixed plate and the two baffles.

[0009] In a further technical solution, the driving assembly includes a servo motor, a coupling and a base, the base is connected below the mounting rod, the servo motor is mounted on the base and is connected to a nearby roller shaft through a coupling.

[0010] In a further technical solution, the roller wheel includes a driving wheel and a linkage wheel, and the driving wheel and the linkage wheel are fixedly mounted on the roller shaft, the porous conveyor belt is tensioned on the driving wheel, and the linkage belt is tensioned on the linkage wheel.

[0011] In a further technical solution, the mud inlet assembly includes a mud inlet pump and a mud inlet pipe, one end of the mud inlet pipe is connected to the mud inlet pump, the other end extends into the box body and is arranged on one side of the porous conveyor belt, and multiple mud outlets are evenly opened below the mud inlet pipe.

[0012] In a further technical solution, the water inlet assembly includes a water inlet pump and a water inlet pipe, one end of the water inlet pipe is connected to the water inlet pump, and the other end extends into the box and is arranged on one side of the porous conveyor belt.

[0013] In a further technical solution, one end of the water inlet pipe extending into the box body is connected to a movable flushing pipe.

[0014] In a further technical solution, the aeration assembly includes a blower, an aeration pipe and a gas flow meter. One end of the aeration pipe is connected to the blower, and the other end passes through the box and extends into the inner bottom of the box. A plurality of aeration holes are evenly distributed on the aeration pipe inside the box, and the gas flow meter is installed on the aeration pipe outside the box.

[0015] In a further technical solution, the aeration tube is a variable micropore aeration tube, and the aperture variation range of the aeration hole is 0.5 to 1.0 mm. Air is supplied to the sludge mixture by a mixture of continuous micro-aeration and intermittent strong disturbance aeration to maintain the dissolved oxygen concentration in the box stable in the range of 1±0.5 mg / L.

[0016] In a further technical solution, the drainage assembly includes an outlet pipe, an outlet pump and a slide rail, one end of the outlet pipe is connected to the outlet pump, and the other end passes through the side of the box and extends into the box, the slide rail is U-shaped, the slide rail is installed on the porous conveyor belt and is slidably connected to the porous conveyor belt, and the outlet pipe passes through the slide rail and abuts against the surface of the porous conveyor belt.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] 1. The present invention realizes the efficient utilization and long-term stable operation of attached worms, improves the dispersibility and attachment density of worms, thereby realizing the efficient and stable treatment of sewage sludge, and effectively promoting the development of efficient ecological reduction of sludge.

[0019] 2. With the continuous operation of the porous conveyor belt, the present invention can repeatedly take out the worms in the worm stuffing box, so that the distribution of the worms on the porous conveyor belt is more uniform, effectively avoiding the situation of local overcrowding or sparseness, thereby improving the growth and reproduction efficiency of the worms.

[0020] 3. The present invention effectively prevents the worms from slipping and uneven distribution, thereby reducing the problem of worm loss in traditional equipment, and also makes the porous conveyor belt have excellent water permeability and cleanability, which not only improves the worm recovery efficiency and accuracy, but also maintains the integrity and activity of the worms, providing high-quality worm resources for sludge reduction treatment, thereby realizing long-term, efficient and stable operation of the equipment.

[0021] 4. The present invention supplies gas to the sewage-sludge mixture by a variable microporous aeration tube in a mixed manner of continuous micro-aeration and intermittent strong disturbance aeration, thereby being able to accurately control the gas supply to the sewage-sludge mixture and ensure a stable dissolved oxygen concentration in the reactor, thereby meeting the oxygen conditions required for the growth of worms, promoting their healthy growth and active metabolism, and accelerating the decomposition and mineralization process of organic matter in the sludge, thereby significantly improving the efficiency and quality of sludge reduction treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the side structure of the interior of the box body of the present invention;

[0025] Figure 3 It is a schematic diagram of the top view of the structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the partial structure of the inner side of the porous conveyor belt of the present invention;

[0027] Figure 5 It is a schematic diagram of the cooperation between the porous conveyor belt and the slide rail of the present invention;

[0028] Figure 6 for Figure 5 Schematic diagram of the section along the direction of the cutting symbol AA.

[0029] Figure numerals: 1-box, 2-worm stuffing box, 3-porous conveyor belt, 4-connecting rod, 5-fixed plate, 6-mounting rod, 7-roller, 8-roller, 801-driving wheel, 802-linked wheel, 9-linked belt, 10-hole groove, 11-hole, 12-baffle, 13-mounting groove, 14-servo motor, 15-coupling, 16-base, 17-mud inlet pump, 18-mud inlet pipe, 19-water inlet pump, 20-water inlet pipe, 21-mobile flushing pipe, 22-blower, 23-variable microporous aeration tube, 24-gas flowmeter, 25-aeration hole, 26-water outlet pipe, 27-water outlet pump, 28-slide rail. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 6In order to solve the problems of easy loss, uneven distribution and unstable attachment of worms in existing sludge treatment equipment, the present invention provides a sludge reduction equipment with a special structure to strengthen the stable attachment of worms, including a box body 1, a worm filling box 2, a porous conveyor belt 3, a sludge inlet component, a water inlet component, an aeration component and a drainage component. Both sides of the worm filling box 2 are connected to a fixing plate 5 through a connecting rod 4. The two fixing plates 5 are provided with a mounting rod 6 and are connected to the box body 1 on the adjacent side. The fixing plates 5 are surrounded by the outer side of the worm filling box 2. A roller shaft 7 is provided through each of the four roller shafts 7, and roller wheels 8 are fixedly sleeved on the four roller shafts 7. The four roller wheels 8 are connected by a linkage belt 9. The porous conveyor belt 3 is provided with a plurality of hole grooves 10 inclined along the running direction of the porous conveyor belt 3, and a plurality of holes 11 are evenly provided in the hole grooves 10. The porous conveyor belt 3 is tensioned and installed on the roller wheels 8. The roller shafts 7 are connected by a driving assembly. The mud inlet assembly and the water inlet assembly are arranged above the porous conveyor belt 3, and the aeration assembly and the drainage assembly are installed in the box body 1.

[0032] This sludge reduction equipment realizes the efficient utilization and long-term stable operation of attached worms, improves the dispersion and attachment density of worms, thus realizing the efficient and stable treatment of sewage sludge, and effectively promoting the development of efficient ecological sludge reduction. Its specific working principle is as follows:

[0033] First, the driving component is started, and the driving component transmits power to the roller shaft 7, driving the roller 8 on the roller shaft 7 to rotate, and the four rollers 8 are rotated synchronously through the linkage belt 9, thereby driving the porous conveyor belt 3 to run continuously and stably. Next, the mud inlet component and the water inlet component are started to extract sewage sludge and clean water respectively. After these materials fall on the top of the porous conveyor belt 3, they will splash to both sides or move with the porous conveyor belt 3, and finally enter the box body 1. Some materials will also pass through the holes 11 on the surface of the porous conveyor belt 3 and fall into the worm stuffing box 2 below. When the materials flow through the worm stuffing box 2, the mixture rich in worms will be taken out and fall on the porous conveyor belt 3, and move with the porous conveyor belt 3. At the same time, the aeration component is started to supply air to the sewage sludge mixture to maintain the dissolved oxygen concentration in the mixture, so as to provide the necessary oxygen for the subsequent growth of worms and sludge reduction treatment. When the liquid level of the sewage sludge mixture in the box 1 is higher than the lower end of the porous conveyor belt 3, since the hole grooves 10 are inclined along the running direction of the porous conveyor belt 3, the sewage sludge mixture will move with the porous conveyor belt 3, and when it moves to the upper end, it will fall into the worm stuffing box 2 again, so that the worms are taken out of the worm stuffing box 2 again, and the mixture with the worms taken out falls back to the porous conveyor belt 3. With the continuous operation of the porous conveyor belt 3, this process is repeated continuously, so that the distribution of worms on the porous conveyor belt 3 becomes more and more uniform, effectively avoiding the situation of local overcrowding or sparseness, thereby improving the growth and reproduction efficiency of the worms. At the same time, by optimizing the pore size and pore density of the holes 11 in the hole groove 10, it can ensure that the worms are firmly attached to the surface of the porous conveyor belt 3, effectively preventing the worms from slipping and uneven distribution, thereby reducing the problem of worm loss in traditional equipment, and also making the porous conveyor belt 3 have excellent water permeability and washability, which not only improves the worm recovery efficiency and accuracy, but also maintains the integrity and activity of the worms, providing high-quality worm resources for sludge reduction treatment, thereby achieving long-term, efficient and stable operation of the equipment. After worm degradation and treatment, the harmful substances in the sewage sludge mixture are significantly reduced. At this time, the drainage component is started to discharge the purified clean water out of the box 1, effectively avoiding the accumulation of stagnant water and pollutants, and further improving the overall processing efficiency and stability of the equipment.

[0034] In a specific embodiment, see Figure 2 The top surface of the box body 1 is open and baffles 12 inclined inwardly are symmetrically arranged on both sides of the opening. Mounting grooves 13 are opened on the two baffles 12. The two mounting rods 6 are arranged in the mounting grooves 13 on the adjacent side. There is a gap between the fixing plate 5 and the two baffles 12.

[0035] There is a gap between the two inwardly inclined baffles 12 and the fixed plate 5, so that after the sewage sludge and clean water fall onto the porous conveyor belt 3 and splash to both sides, these materials can be redirected into the box body 1. The mounting rod 6 on the fixed plate 5 is arranged in the mounting groove 13 on the baffle 12, so that the fixed plate 5 can be easily installed on the box body 1 and is easy to disassemble, which greatly simplifies the maintenance and replacement process of the equipment.

[0036] In a specific embodiment, see Figure 2 The driving assembly includes a servo motor 14, a coupling 15 and a base 16. The base 16 is connected to the bottom of the mounting rod 6. The servo motor 14 is installed on the base 16 and is connected to the adjacent roller shaft 7 through the coupling 15.

[0037] The servo motor 14 is connected to the bottom of the mounting rod 6 through the base 16, and is connected to the adjacent roller shaft 7 through the coupling 15, avoiding the need to modify the original structure of the box body 1 and the inclined plate, thereby effectively avoiding possible structural damage and additional manufacturing costs, and is a relatively simple way to drive the porous conveyor belt 3. At the same time, it avoids the contact between sewage sludge and clean water and the driving component, prolongs the service life of the driving component, and reduces the failure rate caused by corrosion or pollution.

[0038] In a specific embodiment, see Figure 1 and Figure 2 The roller 8 includes a driving wheel 801 and a linkage wheel 802, and the driving wheel 801 and the linkage wheel 802 are both fixedly mounted on the roller shaft 7. The porous conveyor belt 3 is tensionedly mounted on the driving wheel 801, and the linkage belt 9 is tensionedly mounted on the linkage wheel 802.

[0039] The roller 8 achieves synchronous operation of the four interlocking wheels 802 through the coordinated cooperation of the driving wheel 801 and the interlocking wheel 802 , by tensioning the interlocking belt 9 and installing it on the interlocking wheel 802 , so that the driving wheel 801 can stably drive the porous conveyor belt 3 to move.

[0040] In a specific embodiment, see Figure 1 The mud inlet assembly includes a mud inlet pump 17 and a mud inlet pipe 18. One end of the mud inlet pipe 18 is connected to the mud inlet pump 17, and the other end extends into the box body 1 and is arranged above the porous conveyor belt 3. A plurality of mud outlets are evenly opened below the mud inlet pipe 18.

[0041] After the mud inlet pump 17 is started, the sewage sludge is efficiently sucked and pumped into the mud inlet pipe 18. The mud inlet pipe 18 conveys the sewage sludge to the top of the porous conveyor belt 3 in a dispersed manner through the mud outlets evenly distributed below, thereby avoiding local accumulation of sewage sludge.

[0042] In a specific embodiment, see Figure 1 The water inlet assembly includes a water inlet pump 19 and a water inlet pipe 20 . One end of the water inlet pipe 20 is connected to the water inlet pump 19 , and the other end thereof extends into the box body 1 and is arranged above the mud inlet pipe 18 .

[0043] After the water inlet pump 19 is started, clean water is efficiently sucked in and pumped to the water inlet pipe 20, and the sewage sludge below is flushed, so that the sewage sludge will not remain on the porous conveyor belt 3, which can ensure that the sludge can be evenly distributed in the treatment area and improve the treatment effect.

[0044] In a specific embodiment, see Figure 1 One end of the water inlet pipe 20 extending into the box body 1 is connected to a movable flushing pipe 21.

[0045] By connecting the movable flushing pipe 21 at one end of the water inlet pipe 20, the movable flushing pipe 21 can move freely above the porous conveyor belt 3, and can not only flush the sewage sludge at different positions above the porous conveyor belt 3, but also can flush the sewage sludge splashed onto the inclined plates on both sides, thereby enhancing the adaptability and practicality of the equipment.

[0046] In a specific embodiment, see Figure 1 The aeration assembly includes a blower 22, an aeration pipe and a gas flow meter 24. One end of the aeration pipe is connected to the blower 22, and the other end passes through the box 1 and extends into the inner bottom of the box 1. A plurality of aeration holes 25 are evenly distributed on the aeration pipe inside the box 1. The gas flow meter 24 is installed on the aeration pipe outside the box 1.

[0047] During aeration, the blower 22 is started to supply air to the sewage-sludge mixture to maintain a stable dissolved oxygen concentration in the reactor and provide necessary oxygen for the subsequent growth of worms and sludge reduction. The gas flow meter 24 can adjust the air flow rate, so that the aeration intensity can be flexibly adjusted, thereby ensuring the treatment effect while maximally saving energy and reducing operating costs.

[0048] In a specific embodiment, the aeration tube is a variable micropore aeration tube 23, and the aperture variation range of the aeration hole 25 is 0.5-1.0 mm. Air is supplied to the sludge mixture by a mixture of continuous micro-aeration and intermittent strong disturbance aeration to maintain the dissolved oxygen concentration in the box 1 stable in the range of 1±0.5 mg / L.

[0049] The variable microporous aeration tube 23 is used to supply gas to the sewage-sludge mixture in a mixed manner of continuous micro-aeration and intermittent strong disturbance aeration, so that the gas supply to the sewage-sludge mixture can be accurately controlled to ensure that the dissolved oxygen concentration in the reactor is stably maintained within the ideal range of 1±0.5 mg / L, thereby meeting the oxygen conditions required for the growth of worms, promoting their healthy growth and active metabolism, and accelerating the decomposition and mineralization process of organic matter in the sludge, thereby significantly improving the efficiency and quality of sludge reduction treatment. It is worth mentioning that the variable microporous aeration tube 23 is a prior art, which can be fully realized by those skilled in the art, so it will not be repeated here.

[0050] In a specific embodiment, see Figure 1 , Figure 5 and Figure 6 The drainage assembly includes an outlet pipe 26, an outlet pump 27 and a slide rail 28. One end of the outlet pipe 26 is connected to the outlet pump 27, and the other end passes through the side of the box body 1 and extends into the box body 1. The slide rail 28 is U-shaped. The slide rail 28 is installed on the porous conveyor belt 3 and is slidably connected to the porous conveyor belt 3. The outlet pipe 26 passes through the slide rail 28 and abuts against the surface of the porous conveyor belt 3.

[0051] After the worms' biodegradation and effective treatment, the water outlet pump 27 is started. At this time, the water outlet pipe 26 abuts against the surface of the porous conveyor belt 3. As the porous conveyor belt 3 runs smoothly, the holes 10 thereon can drive the purified clean water, and when it is transported to the position of the slide rail 28, the water outlet pipe 26 effectively draws the clean water out of the holes 10 through the holes 11 by suction, and smoothly discharges it out of the box 1.

[0052] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A sludge reduction device with a special structure to strengthen the stable attachment of worms, characterized in that: The invention comprises a box body (1), a worm stuffing box (2), a porous conveyor belt (3), a mud inlet assembly, a water inlet assembly, an aeration assembly and a drainage assembly. Both sides of the worm stuffing box (2) are connected to a fixing plate (5) through a connecting rod (4). The two fixing plates (5) are provided with a mounting rod (6) and are connected to the box body (1) on the adjacent side. Rollers (7) are provided on the four sides of the fixing plate (5) on the outer side of the worm stuffing box (2). Rollers (8) are fixedly sleeved on the four rollers (7). The roller (8) is connected in transmission via a linkage belt (9); the porous conveyor belt (3) is provided with a plurality of hole grooves (10) obliquely arranged along the running direction of the porous conveyor belt (3); a plurality of holes (11) are evenly arranged in the hole grooves (10); the porous conveyor belt (3) is tensionedly mounted on the roller (8); a driving assembly is connected in transmission to the roller shaft (7); the mud inlet assembly and the water inlet assembly are both arranged above the porous conveyor belt (3); and the aeration assembly and the drainage assembly are both mounted in the box (1).

2. The sludge reduction equipment with special structure to strengthen the stable attachment of worms according to claim 1 is characterized in that: The top surface of the box body (1) is open and baffles (12) inclined inwardly are symmetrically arranged on both sides of the opening. The two baffles (12) are each provided with a mounting groove (13). The two mounting rods (6) are arranged in the mounting grooves (13) on the adjacent side. A gap is left between the fixing plate (5) and the two baffles (12).

3. The sludge reduction equipment with special structure to strengthen the stable attachment of worms according to claim 1 is characterized in that: The driving assembly comprises a servo motor (14), a coupling (15) and a base (16), wherein the base (16) is connected below the mounting rod (6), the servo motor (14) is mounted on the base (16) and is transmission-connected to a nearby roller shaft (7) via the coupling (15).

4. The sludge reduction equipment with special structure to strengthen the stable attachment of worms according to claim 1 is characterized in that: The roller (8) comprises a driving wheel (801) and a linkage wheel (802), wherein the driving wheel (801) and the linkage wheel (802) are both fixedly mounted on the roller shaft (7), the porous conveyor belt (3) is tensionedly mounted on the driving wheel (801), and the linkage belt (9) is tensionedly mounted on the linkage wheel (802).

5. The sludge reduction equipment with special structure to strengthen the stable attachment of worms according to claim 1 is characterized in that: The mud inlet assembly comprises a mud inlet pump (17) and a mud inlet pipe (18); one end of the mud inlet pipe (18) is in communication with the mud inlet pump (17), and the other end thereof extends through the box body (1) and is arranged above the porous conveyor belt (3); a plurality of mud outlets are evenly arranged below the mud inlet pipe (18).

6. The sludge reduction equipment with special structure to strengthen the stable attachment of worms according to claim 5, characterized in that: The water inlet assembly comprises a water inlet pump (19) and a water inlet pipe (20); one end of the water inlet pipe (20) is in communication with the water inlet pump (19), and the other end of the water inlet pipe (20) extends through the box body (1) and is arranged above the mud inlet pipe (18).

7. The sludge reduction equipment with special structure to strengthen the stable attachment of worms according to claim 6, characterized in that: One end of the water inlet pipe (20) extending into the box body (1) is connected to a movable flushing pipe (21).

8. The sludge reduction equipment with special structure to strengthen the stable attachment of worms according to claim 1 is characterized in that: The aeration assembly comprises a blower (22), an aeration pipe and a gas flow meter (24); one end of the aeration pipe is connected to the blower (22), and the other end passes through the box (1) and extends into the inner bottom of the box (1); a plurality of aeration holes (25) are evenly distributed on the aeration pipe inside the box (1); and the gas flow meter (24) is installed on the aeration pipe outside the box (1).

9. The sludge reduction equipment with special structure to strengthen the stable attachment of worms according to claim 8, characterized in that: The aeration tube is a variable micropore aeration tube (23), and the aperture of the aeration hole (25) varies in the range of 0.5 to 1.0 mm. Air is supplied to the sludge mixed liquid by a mixed method of continuous micro-aeration and intermittent strong disturbance aeration, so as to maintain the dissolved oxygen concentration in the box (1) stable within the range of 1±0.5 mg / L.

10. A sludge reduction device with a special structure to strengthen the stable attachment of worms according to any one of claims 1 to 9, characterized in that: The drainage assembly comprises a water outlet pipe (26), a water outlet pump (27) and a slide rail (28); one end of the water outlet pipe (26) is connected to the water outlet pump (27), and the other end passes through the side of the box body (1) and extends into the box body (1); the slide rail (28) is U-shaped; the slide rail (28) is mounted on the porous conveyor belt (3) and is slidably connected to the porous conveyor belt (3); the water outlet pipe (26) passes through the slide rail (28) and abuts against the surface of the porous conveyor belt (3).

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