Anaerobic granular sludge moving and dosing equipment for organic wastewater treatment

Abstract

The application discloses an anaerobic granular sludge moving and adding equipment for organic wastewater treatment, which comprises a movable adding device box and a feeding filter system, a primary mixing and heat preservation system, a flow maintaining and heat preservation system movable box, a secondary mixing and heat preservation system and a discharging system, which are sequentially connected through overflow channels and are all provided with heating devices; the flow maintaining and heat preservation system is provided with the movable box and a vibrating mechanism for vibrating the movable box; the discharging system is provided with a discharging pipe, an anaerobic granular sludge screw pump and an anaerobic granular sludge discharging pipe, and an anaerobic granular sludge circulating pipe is connected with the anaerobic granular sludge screw pump; the feeding filter system is provided with an online moisture content monitoring instrument, and a water inlet pipe electric valve is connected with the online moisture content monitoring instrument to maintain the moisture content of the anaerobic granular sludge in a set range. The application solves the problems of anaerobic granular sludge deposition, crushing and temperature loss during the transportation and adding of the anaerobic granular sludge in an IC anaerobic tower.

Description

[0001] This application is based on the divisional application of the Chinese invention patent application with the application number 2021114004188 and the patent name "A movable dosing device and method for maintaining the flowability of anaerobic granular sludge" filed by the applicant on November 24, 2021. At least part of the content in the original specification is incorporated herein by reference.

TECHNICAL FIELD

[0002] The present application relates to the technical field of sewage treatment.

BACKGROUND

[0003] Due to the rapid development of modern industry, the discharge of industrial wastewater has increased dramatically. This has largely polluted existing water sources, leading to a continuous decrease in available water resources. Only by treating the pollution source within the factory and not polluting the nearby water sources can this vicious cycle be alleviated. Currently, the typical industrial wastewater pollution is more serious in the fields of papermaking, printing and dyeing, food, brewing and other high-pollution industries. The main feature is that the CODcr concentration in the wastewater is high and the biodegradability is weak. The traditional biochemical direct treatment has a large load, which is easy to cause the paralysis of the wastewater treatment system. Therefore, for the high CODcr in the industrial wastewater treatment process, an IC anaerobic tower is set at the front end of the biochemical process. In the IC anaerobic tower reaction zone, through the metabolic process of anaerobic microorganisms, most of the organic matter is converted into inorganic matter and a small amount of cell material without the need to provide oxygen, so as to achieve the purpose of removing organic pollutants in wastewater, improving the biodegradability of wastewater and reducing the subsequent biochemical treatment load.

[0004] In the anaerobic treatment of organic wastewater, high-efficiency anaerobic reactors such as IC anaerobic towers must use anaerobic granular sludge. The anaerobic granular sludge has a stable granular structure, is usually spherical, ellipsoidal or potato-shaped, the particle size of the anaerobic granular sludge is 0.2-1.5 mm, and most of the particle size is about 0.8 mm. The color of the particles is mostly cyan gray or gray black, light gray. The surface of the anaerobic granular sludge with good activity is smooth, has pores, the center of the anaerobic granular sludge has obvious cavities, and the wet density is also larger, so the anaerobic granular sludge has good settling performance. When the volume load of the reactor reaches 10-30 kgCOD / m3·d, the anaerobic granular sludge can still be retained in the reactor. The high-quality wastewater treatment performance of the anaerobic granular sludge also requires strict inoculation: firstly, a sufficient amount of the anaerobic granular sludge is added at one time, secondly, the temperature of the inoculated anaerobic granular sludge needs to be strictly controlled at 35-37℃, and thirdly, the anaerobic granular sludge needs to be cultured for at least about 6 months after being put into the IC anaerobic tower (due to water evaporation, sludge sedimentation, destruction of the granular structure and sludge temperature loss during transportation, the anaerobic granular sludge transported to the site for inoculation generally has poor performance, resulting in a prolonged culture period of the IC anaerobic tower), so that the anaerobic granular sludge can be cultured. The main reason for the too long culture time of the anaerobic granular sludge lies in the transportation process of the anaerobic granular sludge. The conventional transportation mode of the anaerobic granular sludge is mainly direct transportation by tank trucks, and the anaerobic granular sludge taken from a normally operating wastewater treatment plant needs to be transported to the site of the IC anaerobic tower, and the transportation time is usually more than 2 days. The long transportation time also leads to a loss of 15-20% of the anaerobic granular sludge bacteria transported to the site, which in turn prolongs the acclimation time of the anaerobic granular sludge.

[0005] How to maintain the properties of the anaerobic granular sludge during transportation, improve the activity of the anaerobic granular sludge, realize rapid culture of the anaerobic granular sludge in the IC anaerobic tower, and reduce the operation cost of enterprises and society is the focus of research in this field.

SUMMARY

[0006] In order to overcome the deficiencies in the prior art, the technical problem to be solved by the present application is to provide a mobile anaerobic granular sludge feeding device for organic wastewater treatment, so as to solve the problems of anaerobic granular sludge sedimentation, breakage and temperature loss during transportation and feeding of conventional IC anaerobic towers.

[0007] To solve the above technical problems, the present application adopts the following technical scheme: a mobile anaerobic granular sludge feeding device for organic wastewater treatment, comprising a movable feeding device box and a feeding filter system, a primary mixing and heat preservation system, a flow maintaining and heat preservation system, a secondary mixing and heat preservation system and a discharging system arranged in the movable feeding device box, wherein the feeding filter system, the primary mixing and heat preservation system, the flow maintaining and heat preservation system, the secondary mixing and heat preservation system and the discharging system are sequentially connected through overflow channels.

[0008] The feeding and filtration system is equipped with a first feed pipe, an electric valve for the feed pipe installed on the first feed pipe, an anaerobic granular sludge circulation pipe, an electric valve for the anaerobic granular sludge circulation pipe installed on the anaerobic granular sludge circulation pipe, a first discharge pipe, and a filter screen. Anaerobic granular sludge is discharged into the feeding and filtration system through the first feed pipe and filtered through the filter screen.

[0009] The primary mixing and insulation system is equipped with a water inlet pipe, an electric valve installed on the water inlet pipe, a second slag discharge pipe, and a first hyperboloid mixer. After the electric valve on the water inlet pipe is opened, tap water is introduced into the primary mixing and insulation system through the water inlet pipe to adjust the moisture content of the anaerobic granular sludge, and the moisture content of the influent anaerobic granular sludge is controlled between 95% and 98%. The anaerobic granular sludge is stirred by the first hyperboloid mixer.

[0010] The flow and heat preservation system is equipped with a vibrating box, a vibration mechanism to realize the vibration of the vibrating box, and a second feed pipe and a third slag discharge pipe located in the vibrating box.

[0011] The secondary mixing and insulation system is equipped with a third feed pipe, a fourth slag discharge pipe, and a second hyperboloid mixer, which is used to mix the anaerobic granular sludge.

[0012] The discharge system is equipped with a fifth slag discharge pipe, a discharge pipe of the discharge system, an anaerobic granular sludge screw pump connected to the discharge pipe of the discharge system, an anaerobic granular sludge discharge pipe connected to the anaerobic granular sludge screw pump, an electric valve for the discharge pipe connected to the anaerobic granular sludge discharge pipe, and an anaerobic granular sludge circulation pipe connected to the anaerobic granular sludge screw pump.

[0013] The feeding filtration system, primary mixing and heat preservation system, flow maintenance and heat preservation system, secondary mixing and heat preservation system and discharge system are all equipped with heating devices to maintain the anaerobic granular sludge at a set temperature, so that the anaerobic granular sludge temperature is maintained between 35℃ and 37℃.

[0014] The feeding filtration system is equipped with an online moisture content monitoring instrument. The instrument controls the electric valve of the inlet pipe to maintain the moisture content of the anaerobic granular sludge within a set range. When the temperature of the anaerobic granular sludge is below 35°C or the moisture content is below 95%, the electric valve of the discharge pipe is closed, the electric valve of the anaerobic granular sludge circulation pipe is opened, and the anaerobic granular sludge screw pump is turned on. The anaerobic granular sludge discharged from the discharge pipe of the discharge system is then fed into the feeding filtration system through the anaerobic granular sludge circulation pipe, forming an internal circulation of the anaerobic granular sludge.

[0015] Preferably, the heating device includes a heating coil installed in the primary mixing and heat preservation system, the flow and heat preservation system, the secondary mixing and heat preservation system, and the discharge system, as well as an electromagnetic steam generator for introducing steam into the heating coil.

[0016] Preferably, the feeding filtration system, the flow and heat preservation system, the secondary mixing and heat preservation system, and the discharge system are equipped with online thermometers for monitoring. The online thermometers are used to control the electromagnetic steam generator to introduce steam into the heating coil, so that the temperature of the anaerobic granular sludge is maintained within the set range.

[0017] Preferably, the heating coils are arranged in a ring around the inner wall of the primary mixing and insulation system box at a certain interval; the heating coils are arranged in a ring around the inner wall of the vibrating box of the flow and insulation system box at a set interval; the heating coils are arranged in a ring around the inner wall of the secondary mixing and insulation system box at a certain interval; and the heating coils are arranged in a ring around the inner wall of the discharge system box at a certain interval.

[0018] Preferably, the vibration mechanism includes a vibration spring assembly and a vibration motor integrated with the vibration spring assembly.

[0019] Preferably, the inner wall of the movable dosing device box is made of 14mm thick steel plate, the outer wall is made of 0.5-0.7mm thick steel plate, and a 100mm thick polystyrene sandwich foam board is provided between the inner and outer walls.

[0020] Preferably, the aspect ratio of the movable dosing device housing is in the range of 3:1:1.2, the length of the housing is in the range of 9 to 12 m, and the effective volume is ≥80 m³. 3 .

[0021] Preferably, a filter screen is provided between the feed filtration system and the primary mixing and insulation system, and the filter screen is made of stainless steel and can be detachably installed in the slot.

[0022] Preferably, the top of the housings of the primary mixing and insulation system, the flow and insulation system, and the secondary mixing and insulation system are all provided with manholes.

[0023] Preferably, the inner wall of the movable dosing device housing is provided with a wear-resistant coating, which adopts a three-layer wear-resistant polyurethane structure.

[0024] By adopting the above technical solution, the present invention has the following beneficial effects:

[0025] Based on the characteristics of the sludge, a feeding filtration system, a primary mixing and insulation system, a flow maintenance and insulation system, a secondary mixing and insulation system, and a discharge system are set up. Among them, the flow maintenance and insulation system, with its vibrating box, vibrating mechanism, and high-efficiency hyperboloid mixers in the primary and secondary mixing and insulation systems, can maintain the flowability of anaerobic granular sludge without destroying its stable granular structure.

[0026] The feeding filtration system, primary mixing and insulation system, flow maintenance and insulation system, secondary mixing and insulation system, and discharge system are all equipped with heating devices to maintain the anaerobic granular sludge at a certain temperature.

[0027] The anaerobic granular sludge circulation pipe ensures that the material is constantly circulating internally during transportation, preventing the anaerobic granular sludge from settling and ultimately improving the activity of the anaerobic granular sludge. This allows the anaerobic granular sludge, which has traveled a long distance, to be rapidly cultivated in the IC anaerobic tower, achieving the goal of saving time, labor, and reducing costs.

[0028] Therefore, this method solves the problems of anaerobic granular sludge transportation, sedimentation, breakage, and temperature loss during addition in conventional devices and methods in IC anaerobic towers. It aims to maintain the fluidity, temperature, and moisture content of anaerobic granular sludge, improve its activity, and achieve rapid cultivation of anaerobic granular sludge in IC anaerobic towers, thereby saving time, effort, and reducing costs.

[0029] In addition, the transportation project saves manpower, reduces the cultivation time of anaerobic granular sludge in the IC anaerobic tower, reduces the consumption of human resources during the commissioning period, and reduces the loss of microbial strains from the original 15-20% to 5-10%.

[0030] It has advantages such as high degree of automation, advanced and reliable functions, low operation and maintenance, and long-term continuous automatic operation, which facilitates transportation and saves costs in the long run.

[0031] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0032] Figure 1 This is a structural block diagram of the present invention;

[0033] Figure 2 This is a detailed structural diagram of the present invention.

[0034] In the diagram: Feed filtration system 1; First feed pipe 13; Anaerobic granular sludge circulation pipe 14; First sludge discharge pipe 15; Electric valve for anaerobic granular sludge feed pipe 16; Electric valve for anaerobic granular sludge circulation pipe 17; Primary mixing and insulation system 2; Tap water inlet pipe 21; Electric valve for tap water inlet pipe 22; Second sludge discharge pipe 23; Manhole 24; Vibrating chamber 3 for flow maintenance and insulation system; Second feed pipe 31; Third sludge discharge pipe 32; Flow maintenance and insulation system... 33. Insulation system box vibration spring assembly; 4. Secondary mixing and insulation system; 41. Third feed pipe; 42. Fourth slag discharge pipe; 5. Discharge system; 51. Fifth slag discharge pipe; 52. Discharge system discharge pipe; 53. Anaerobic granular sludge discharge pipe; 54. Discharge pipe electric valve; 6. Filter screen; 7. Slot; 8. Hyperboloid mixer; 9. Heating coil; 10. Anaerobic granular sludge screw pump; 11. Electrical control box; 12. Mobile dosing device box; 18. Electromagnetic steam generator.

Detailed Implementation Methods

[0035] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0036] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "left," and "right" that indicate orientation or positional relationship are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more, unless explicitly defined otherwise.

[0041] For anaerobic granular sludge, based on its characteristics, a mobile dosing device and method are designed to maintain the fluidity of anaerobic granular sludge, which can both facilitate transportation and maintain the quality of anaerobic granular sludge.

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0043] Example 1

[0044] This embodiment provides a mobile anaerobic granular sludge dosing device for organic wastewater treatment, such as... Figure 1 As shown, it includes a feeding and filtering system 1, a primary mixing and insulation system 2, a flow and insulation system vibrating chamber 3, a secondary mixing and insulation system 4, and a discharge system 5.

[0045] like Figure 2As shown, in the feeding filtration system 1, the feeding filtration system 1 is equipped with a first feed pipe 13, an anaerobic granular sludge circulation pipe 14, a first sludge discharge pipe 15, an electric valve 16 for the anaerobic granular sludge feed pipe, and an electric valve 17 for the anaerobic granular sludge circulation pipe. The first feed pipe 13 is connected to the top left side of the feeding filtration system 1 at a position higher than the average liquid level, and the first feed pipe 13 directly enters the bottom of the feeding filtration system 1. The anaerobic granular sludge circulation pipe 14 is connected from the anaerobic granular sludge discharge pipe 53 to the first feed pipe 13. The first sludge discharge pipe 15 is located at the bottom of the feeding filtration system 1. The specifications of the first feed pipe 13 are DN150, the specifications of the anaerobic granular sludge circulation pipe 14 are DN150, the specifications of the first sludge discharge pipe 15 are DN200, the specifications of the electric valve 16 for the anaerobic granular sludge feed pipe are DN150, and the specifications of the electric valve 17 for the anaerobic granular sludge circulation pipe are DN150. Open the electric valve 16 of the anaerobic granular sludge feed pipe. The anaerobic granular sludge is discharged into the feed filtration system 1 through the first feed pipe 13. Open the electric valve 17 of the anaerobic granular sludge circulation pipe as needed. The anaerobic granular sludge at the end of the system is fed into the feed filtration system 1 through the anaerobic granular sludge circulation pipe 14, forming an internal circulation within the entire system. This prevents the anaerobic granular sludge from settling, maintains its fluidity and activity, and allows the anaerobic granular sludge from afar to be rapidly cultivated in the IC anaerobic tower, achieving the goal of saving time, labor, and reducing costs. A filter screen 6 connects the feed filtration system 1 to the primary mixing and insulation system 2.

[0046] The filter screen 6 is made of stainless steel and can be detachably installed in the slot 7. The filter screen has a mesh size of 4. The stainless steel filter screen can prevent impurities such as plastic bags and fibrous waste in the anaerobic granular sludge from clogging pipes, sludge pumps, IC anaerobic tower water distributors, etc.

[0047] like Figure 2As shown, the primary mixing and insulation system 2 includes a water inlet pipe 21, a water inlet electric valve 22, a second slag discharge pipe 23, a manhole 24, a hyperboloid mixer 8, a heating coil 9, and an electromagnetic steam generator 18. The water inlet pipe 21 is DN20 and runs from the top to the bottom of the primary mixing and insulation system 2. The water inlet pipe 21 is equipped with a water inlet electric valve 22, which is DN20. The second slag discharge pipe 23 is DN200 and is located at the bottom of the primary mixing and insulation system 2. The manhole 24 is φ800mm and is located at the top of the primary mixing and insulation system 2. The electromagnetic steam generator 18 has the following parameters: evaporation capacity 110kg / h, rated working pressure 0.7MPa, steam temperature 170℃, and power 80kW / h. It is located at the top of the primary mixing and insulation system 2. The hyperboloid mixer 8 is supported by a channel steel bracket at the top of the primary mixing and insulation system 2. Its three-dimensional spiral mixing flow provides advantages such as uniformity, high efficiency, energy saving, and gentleness. Its structure and near-bottom installation position determine its anti-settling effect and large-area water exchange, effectively eliminating dead zones during mixing. It also maintains the stable granular structure of the anaerobic sludge without breaking it up during mixing. A DN25 heating coil 9 is installed around the inner wall of the primary mixing and insulation system 2 at regular intervals. The electromagnetic steam generator 18 is turned on to introduce steam into the primary mixing and insulation system 2, maintaining the temperature of the anaerobic granular sludge between 35℃ and 37℃. As needed, the electric valve 22 of the tap water inlet pipe is opened to inject tap water into the primary mixing and insulation system 2 to adjust the moisture content of the anaerobic granular sludge to between 95% and 98%. The primary mixing and insulation system 2 is connected to the vibrating box 3 of the flow and insulation system via a partition plate.

[0048] like Figure 2As shown, the vibrating chamber 3 of the fluidization and insulation system is equipped with a second feed pipe 31, a third slag discharge pipe 32, a vibration spring assembly 33, a heating coil 9, and a manhole 24. The second feed pipe 31, with a specification of DN150, is located at the top side of the vibrating chamber 3. The third slag discharge pipe 32, with a specification of DN200, is located at the bottom of the vibrating chamber 3. The vibration spring assembly 33 is located between the vibrating chamber 3 and the movable dosing device chamber 12. The vibration spring assembly 33, powered by its own vibration motor, drives the vibrating chamber 3 to vibrate up and down with an amplitude range of 5–10 mm, giving the anaerobic granular sludge within the vibrating chamber a certain degree of fluidity while maintaining its stable granular structure. The manhole 24, with a specification of φ800 mm, is located at the top of the vibrating chamber 3. Heating coil 9, specification DN25, is arranged in a ring around the inner wall of the vibrating chamber 3 of the flow and insulation system at certain intervals. The electromagnetic steam generator 18 is turned on to introduce steam into the vibrating chamber 3 of the flow and insulation system, maintaining the temperature of the anaerobic granular sludge between 35℃ and 37℃. The vibrating chamber 3 of the flow and insulation system is connected to the secondary mixing and insulation system 4 via partition No. 2.

[0049] like Figure 2 As shown, the secondary mixing and insulation system 4 includes a third feed pipe 41, a fourth slag discharge pipe 42, a hyperboloid mixer 8, a heating coil 9, and a manhole 24. The third feed pipe 41, with a specification of DN150, is located at the top side of the secondary mixing and insulation system 4 and extends directly to the bottom. The fourth slag discharge pipe 42, with a specification of DN200, is located at the bottom of the secondary mixing and insulation system 4. The hyperboloid mixer 8 is supported by a channel steel bracket at the top of the secondary mixing and insulation system 4. The heating coil 9, with a specification of DN25, is arranged in a ring around the inner wall of the secondary mixing and insulation system 4 at certain intervals. Steam is introduced into the secondary mixing and insulation system 4 by turning on the electromagnetic steam generator 18 to maintain the temperature of the anaerobic granular sludge between 35℃ and 37℃. The manhole 24, with a specification of φ800mm, is located at the top of the secondary mixing and insulation system 4. The secondary mixing and insulation system 4 is connected to the discharge system 5 through the No. 3 partition. Anaerobic granular sludge overflows to the discharge system 5 through the top of the No. 3 partition.

[0050] like Figure 2As shown, the discharge system 5 includes a fifth sludge discharge pipe 51, a discharge system discharge pipe 52, an anaerobic granular sludge discharge pipe 53, an electric valve 54 for the anaerobic granular sludge discharge pipe, a heating coil 9, and an anaerobic granular sludge screw pump 10. The fifth sludge discharge pipe 51 is DN200 and located at the bottom of the discharge system 5. The discharge system discharge pipe 52 is DN150 and located at the bottom of the side of the discharge system 5. The right side is connected to the anaerobic granular sludge screw pump 10. The anaerobic granular sludge screw pump is actually a type of positive displacement pump. It mainly utilizes the rotation of the eccentric single-helix screw within the double-helix bushing to push the anaerobic granular sludge liquid along the spiral groove from the suction port to the discharge port, avoiding the use of a centrifugal pump to high-speed rotation and crush the anaerobic granular sludge. The anaerobic granular sludge discharge pipe 53, with a specification of DN150, is pumped to the IC anaerobic tower. Anaerobic granular sludge is added by opening and closing the electric valve 54 on the anaerobic granular sludge discharge pipe. The anaerobic granular sludge screw pump 10 is connected to the anaerobic granular sludge circulation pipe 14, which leads to the feed filtration system 1, ensuring that the anaerobic granular sludge maintains internal circulation during transportation to prevent sedimentation. The heating coil 9, with a specification of DN25, is arranged in a ring around the inner wall of the discharge system 5 at certain intervals. The electromagnetic steam generator 18 is turned on to introduce steam into the discharge system 5, maintaining the temperature of the anaerobic granular sludge between 35℃ and 37℃.

[0051] The aforementioned mobile dosing device, along with the vibrating box, vibration mechanism, and high-efficiency hyperboloid mixer in the primary and secondary mixing and insulation systems of the fluidization and insulation system, can maintain the fluidity of anaerobic granular sludge without damaging its stable aggregate structure.

[0052] Furthermore, the feeding filtration system, primary mixing and insulation system, flow maintenance and insulation system, secondary mixing and insulation system, and discharge system are all equipped with heating devices to maintain the anaerobic granular sludge at a certain temperature.

[0053] The aforementioned mobile dosing device has manholes on the top of its primary mixing and insulation system, flow maintenance and insulation system, and secondary mixing and insulation system. The manholes are φ800mm in diameter and are used by staff to observe the operation of the equipment inside the unit and facilitate timely troubleshooting.

[0054] The aforementioned anaerobic granular sludge feed pipe, anaerobic granular sludge circulation pipe, tap water inlet pipe, and anaerobic granular sludge discharge pipe are all equipped with electric valves, and the signals are connected to the electrical control box 11 of the movable dosing device to automatically control the start and stop of the electric valves.

[0055] Understandably, valves are installed on the first, second, third, fourth, and fifth slag discharge pipes. These valves are normally closed, and the cleaning water is drained as needed during cleaning.

[0056] The aforementioned movable dosing device has an inner wall of 14mm thick steel plate and an outer wall of 0.5-0.7mm thick color steel plate. A 100mm thick polystyrene sandwich foam board is used for insulation between the inner and outer walls. The length-to-width-to-height ratio of the container ranges from 3:1:1.2, the length ranges from 9 to 12m, and the effective volume is ≥80m³. 3 .

[0057] Furthermore, the inner wall of the mobile dosing device box is provided with a wear-resistant coating, which adopts a three-layer wear-resistant polyurethane structure. The three-layer wear-resistant polyurethane structure consists of one layer of polyurethane primer → one layer of polyurethane paint + special curing agent + polyurethane paint thinner intermediate coat → one layer of polyurethane topcoat. Each coat is applied vertically on the basis of the previous coat, and the dry film thickness is ≥1.5mm.

[0058] Example 2:

[0059] This embodiment provides a mobile dosing method for maintaining the flowability of anaerobic granular sludge, such as... Figure 1 and Figure 2 As shown, the mobile dosing device for maintaining the flowability of anaerobic granular sludge, as provided in Example 1, is used, and includes the following steps:

[0060] Step 1: Drive the mobile dosing device that maintains the fluidity of anaerobic granular sludge to a normally operating wastewater treatment plant. Open the electric valve 16 of the anaerobic granular sludge feed pipe and pump anaerobic granular sludge (a combination of digested sludge, aerobic sludge, and dewatered sludge) with a moisture content of 95% to 98% from the wastewater treatment plant into the feed filtration system 1. The anaerobic granular sludge passes through the filter screen 6 to trap impurities such as plastic bags and fiber waste in the anaerobic granular sludge, preventing blockage of subsequent pumps and heating coils. The moisture content of the influent anaerobic granular sludge is 95% to 98%, and the temperature is 32℃ to 35℃.

[0061] Step Two: The anaerobic granular sludge treated in Step One enters the primary mixing and insulation system 2. A hyperboloid mixer 8 operates at a speed of 10-15 r / min, maintaining the fluidity of the anaerobic granular sludge through agitation. The feed filtration system 1 is equipped with an online moisture content monitoring instrument. This instrument controls the electric valve 22 of the tap water inlet pipe. When the moisture content of the anaerobic granular sludge is below 95%-98%, the electric valve 22 opens, allowing tap water to flow into the primary mixing and insulation system 2 through the tap water inlet pipe 21 to adjust the moisture content of the anaerobic granular sludge. When the moisture content of the influent anaerobic granular sludge is between 95% and 98%, the electric valve 22 remains closed. The feed filtration system 1 is equipped with an online thermometer monitoring instrument. This instrument controls the electromagnetic steam generator 18. When the anaerobic granular sludge temperature is below 35℃~37℃, the electromagnetic steam generator 18 is activated, introducing steam through the heating coil 9 into the primary mixing and insulation system 2 to regulate the anaerobic granular sludge temperature to 35℃~37℃. When the influent anaerobic granular sludge temperature is between 35℃~37℃, the electromagnetic steam generator 18 is not activated. The influent anaerobic granular sludge has a moisture content of 95%~98% and a temperature of 32℃~35℃, while the effluent anaerobic granular sludge has a moisture content of 95%~98% and a temperature of 35℃~37℃.

[0062] Step 3: After treatment in Step 2, the anaerobic granular sludge flows by gravity into the vibrating chamber 3 of the flow and insulation system. The up-and-down vibration of the vibration spring assembly 33 within the flow and insulation system chamber, along with the introduction of steam from the electromagnetic steam generator 18, maintains the anaerobic granular sludge at a certain fluidity and temperature, ensuring that the granular structure of the anaerobic granular sludge is not damaged. The vibrating chamber 3 of the flow and insulation system is equipped with the vibration spring assembly 33, located between the vibrating chamber 3 and the movable dosing device chamber 12, with an up-and-down amplitude between 5 and 10 mm. The vibrating chamber 3 of the flow and insulation system is equipped with an online thermometer. The online thermometer controls the electromagnetic steam generator 18. When the anaerobic granular sludge temperature is below 35℃~37℃, the electromagnetic steam generator 18 is activated, introducing steam through the heating coil 9 into the vibrating chamber 3 of the flow and insulation system to regulate the anaerobic granular sludge temperature to 35℃~37℃. When the influent anaerobic granular sludge temperature is between 35℃~37℃, the electromagnetic steam generator 18 is not activated. The influent anaerobic granular sludge moisture content is 95%~98%, and the temperature is 35℃~37℃. The effluent anaerobic granular sludge moisture content is also 95%~98%, and the temperature is 35℃~37℃.

[0063] Step 4: After treatment in Step 3, the anaerobic granular sludge flows by gravity into the secondary mixing and insulation system 4. Gentle agitation by the hyperboloid mixer 8 and steam introduction through the electromagnetic steam generator 18 maintain the anaerobic granular sludge at a certain fluidity and temperature, ensuring its granular structure is not disrupted. The hyperboloid mixer 8 operates at a speed of 5–10 r / min. The agitation action of the hyperboloid mixer 8 maintains the fluidity of the anaerobic granular sludge. The electromagnetic steam generator 18 is activated, introducing steam into the secondary mixing and insulation system 4 through the heating coil 9 to maintain the anaerobic granular sludge temperature between 35℃ and 37℃. The influent anaerobic granular sludge moisture content is 95%–98%, and the temperature is 35℃–37℃; the effluent anaerobic granular sludge moisture content is 95%–98%, and the temperature is 35℃–37℃.

[0064] Step 5: After treatment in Step 4, the anaerobic granular sludge flows by gravity into the discharge system 5 through the top of the No. 3 baffle. The discharge system 5 is equipped with an online thermometer. Steam is introduced into the discharge system 5 through the electromagnetic steam generator 18 and the heating coil 9 to maintain the anaerobic granular sludge at a certain temperature and maintain its activity. The mobile dosing device that maintains the fluidity of the anaerobic granular sludge is driven to the vicinity of the IC anaerobic tower. The electric valve 54 of the anaerobic granular sludge discharge pipe and the anaerobic granular sludge screw pump 10 are opened in sequence to pump the anaerobic granular sludge liquid with a certain granular structure, a moisture content of 95% to 98%, and a temperature between 35°C and 37°C to the IC anaerobic tower, completing the long-distance transportation of the anaerobic granular sludge.

[0065] Step Six: When the temperature of the anaerobic granular sludge is below 35℃ or the moisture content is below 95%, it is necessary to internally circulate the anaerobic granular sludge in the mobile dosing device housing 12. Close the electric valve 54 of the anaerobic granular sludge discharge pipe, open the electric valve 17 of the anaerobic granular sludge circulation pipe, and open the anaerobic granular sludge screw pump 10. The anaerobic granular sludge at the end of the system is introduced into the feed filtration system 1 through the anaerobic granular sludge circulation pipe 14, forming an internal circulation of the entire system to avoid sedimentation of the anaerobic granular sludge during transportation and to maintain the activity of the anaerobic granular sludge.

[0066] Step 7: The filter screen 6 is fixed in the movable dosing device housing 12 via the slot 7. Over time, impurities such as plastic bags and fiber debris accumulate on the filter screen 6, causing the liquid level in the feeding filtration system 1 to rise. To ensure effective filtration, the filter screen 6 needs to be cleaned. The detachable filter screen 6 is pulled out of the movable dosing device housing 12 and rinsed with a pressure water gun to restore its trapping function. The rinsing cycle is set based on the height of the liquid level rise in the feeding filtration system 1. When the online monitoring instrument of the feeding filtration system level gauge detects a liquid level difference of 200mm, the movable dosing device housing 12 stops feeding, and the filter screen 6 needs to be rinsed.

[0067] Step 8: After prolonged soaking and transportation of anaerobic granular sludge, large sludge deposits will appear on the inner wall of the mobile dosing device housing 12. At this point, the mobile dosing device housing 12 needs to be cleaned. First, open the valves on the first discharge pipe 15, the second discharge pipe 23, the third discharge pipe 32, the fourth discharge pipe 42, and the fifth discharge pipe 51 in sequence to drain the remaining anaerobic granular sludge liquid from the mobile dosing device housing 12. After draining, close the valves on the discharge pipes and use a pressure water gun to flush the inner wall of the mobile dosing device housing 12. Open the valves on the discharge pipes to drain the flushing water sequentially. If necessary, close the valves on the discharge pipes again and flush the inner wall of the mobile dosing device housing 12 until the housing is clean. Discharge the flushing water to the nearest sewage pipe in the plant area.

[0068] In summary, this invention solves the problems of anaerobic granular sludge transport, sedimentation, breakage, and temperature loss during the addition of anaerobic granular sludge in IC anaerobic towers caused by conventional devices and methods. It aims to maintain the fluidity, temperature, and moisture content of anaerobic granular sludge, improve its activity, and achieve rapid cultivation of anaerobic granular sludge in IC anaerobic towers, thereby saving time, effort, and reducing costs.

[0069] In addition, the transportation project saves manpower, reduces the cultivation time of anaerobic granular sludge in the IC anaerobic tower, reduces the consumption of human resources during the commissioning period, and reduces the loss of microbial strains from the original 15-20% to 5-10%.

[0070] It has advantages such as high degree of automation, advanced and reliable functions, low operation and maintenance, and long-term continuous automatic operation, which facilitates transportation and saves costs in the long run.

[0071] The above description is merely a specific embodiment of the invention, but the scope of protection of the invention is not limited thereto. Those skilled in the art should understand that the invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the invention will be included within the scope of the claims.

Claims

1. An apparatus for moving and dosing anaerobic granular sludge for treatment of organic wastewater, characterized by, The movable dosing device box comprises a feed filtering system, a first-stage mixing and heat preservation system, a flow maintaining and heat preservation system, a second-stage mixing and heat preservation system and a discharge system which are sequentially communicated through overflow channels. The feed filtering system is provided with a first feed pipe, a feed pipe electric valve installed on the first feed pipe, an anaerobic granular sludge circulating pipe, an anaerobic granular sludge circulating pipe electric valve installed on the anaerobic granular sludge circulating pipe, a first slag discharge pipe and a filter screen. The first-stage mixing and heat preservation system is provided with a water inlet pipe, a water inlet pipe electric valve installed on the water inlet pipe, a second slag discharge pipe and a first double-curved surface mixer. The flow maintaining and heat preservation system is provided with a second feed pipe and a third slag discharge pipe on a vibratable box body and a vibration mechanism for vibrating the vibratable box body. The second-stage mixing and heat preservation system is provided with a third feed pipe, a fourth slag discharge pipe and a second double-curved surface mixer. The discharge system is provided with a fifth slag discharge pipe, a discharge system discharge pipe, an anaerobic granular sludge screw pump connected with the discharge system discharge pipe, an anaerobic granular sludge discharge pipe connected with the anaerobic granular sludge screw pump and a discharge pipe electric valve connected with the anaerobic granular sludge discharge pipe. The feed filtering system, the first-stage mixing and heat preservation system, the flow maintaining and heat preservation system, the second-stage mixing and heat preservation system and the discharge system are all provided with a heating device for maintaining the anaerobic granular sludge at a set temperature. The feed filtering system is provided with a moisture content on-line monitoring instrument for controlling the water inlet pipe electric valve to maintain the moisture content of the anaerobic granular sludge in a set range. The top of the box body of the first-stage mixing and heat preservation system, the flow maintaining and heat preservation system and the second-stage mixing and heat preservation system is provided with a manhole.

2. The apparatus according to claim 1, wherein the apparatus is characterized by: The heating device comprises heating coils in the first-stage mixing and heat preservation system, the flow maintaining and heat preservation system, the second-stage mixing and heat preservation system and the discharge system and an electromagnetic steam generator for supplying steam to the heating coils.

3. The apparatus according to claim 2, wherein the apparatus is characterized by: The feeding filtering system, the flow maintaining and heat preserving system, the secondary mixing and heat preserving system and the discharging system are provided with thermometer online monitoring instruments, and the electromagnetic steam generator is connected to the heating coil to input steam to maintain the temperature of the anaerobic granular sludge in a set range.

4. The apparatus according to claim 2, wherein the apparatus is characterized by: The heating coil is arranged around the inner wall of the first mixing and heat preserving system tank body at a certain interval, is arranged around the inner wall of the flow maintaining and heat preserving system tank body at a certain interval, is arranged around the inner wall of the secondary mixing and heat preserving system tank body at a certain interval, and is arranged around the inner wall of the discharging system tank body at a certain interval.

5. The apparatus according to claim 1, wherein the apparatus is characterized by: The vibrating mechanism comprises a vibrating spring group and a vibrating motor provided with the vibrating spring group.

6. The apparatus according to claim 1, wherein the apparatus is characterized by: The inner wall of the movable feeding device tank body is a steel plate with a thickness of 14 mm, the outer wall is a steel plate with a thickness of 0.5-0.7 mm, and a polystyrene sandwich foam plate with a thickness of 100 mm is arranged between the inner wall and the outer wall.

7. The apparatus according to claim 1, wherein the apparatus is characterized by: The length-width-height ratio of the movable dosing device box ranges from 3:1:1.2, the length of the box ranges from 9m to 12m, and the effective volume is greater than or equal to 80m 3 .

8. The apparatus according to claim 1, wherein the apparatus is characterized by: A filter screen made of stainless steel is arranged between the feeding filtering system and the first mixing and heat preserving system and is detachably installed in a clamping groove.

9. The apparatus according to claim 1, wherein the apparatus is characterized by: The inner wall of the movable feeding device tank body is provided with a wear-resistant coating, and the wear-resistant coating adopts a polyurethane 3-layer wear-resistant structure.

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