Activated sludge strengthening system and strengthening method for rotational flow recovery based on carrier

Abstract

The invention relates to the technical field of sewage treatment, and discloses a carrier-based active sludge strengthening system and strengthening method for rotational flow recovery, and the system comprises: a treatment tank for carrying out organic matter treatment on sewage added with strains; the secondary sedimentation tank is used for carrying out solid-liquid separation on the sewage treated by the treatment tank; the preferable equipment is used for carrying out preferable separation treatment on heavy sludge, strains and light sludge on the sludge formed after the solid-liquid separation of the secondary sedimentation tank. According to the activated sludge strengthening system for rotational flow recovery based on the carrier, through internal reflux and external reflux, the retention time of sewage in each treatment area is prolonged, the metabolic activity of microorganisms is enhanced, and the sewage treatment efficiency is improved; heavy sludge and strains are screened out through sludge optimization equipment and flow back to a biochemical system, so that the sludge settling performance is improved, and the effluent quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, in particular to a carrier-based activated sludge intensification system and method for cyclone recovery. BACKGROUND

[0002] With the rapid development of industrialization and urbanization, sewage treatment problems have become increasingly prominent and have become a global focus. Traditional sewage treatment methods, such as activated sludge method, can remove organic matter and nutrients in sewage to some extent, but still have many shortcomings.

[0003] Firstly, the sludge settling performance of the traditional activated sludge method is poor, which easily leads to sludge bulking and loss, affecting the effluent quality. Secondly, the sludge produced by this method is large in quantity, and the subsequent treatment cost is high, and the treatment process is complex, which easily causes secondary pollution to the environment. In addition, the anti-shock load capacity of the traditional activated sludge method is weak, and when treating high-concentration sewage or sewage with large water quality fluctuations, the treatment effect is unstable, which is difficult to meet the increasingly stringent environmental protection requirements.

[0004] In the sewage treatment process, the metabolic activity of microorganisms and the residence time play a key role in the treatment effect. However, the traditional method is often difficult to effectively improve the metabolic activity of microorganisms and the residence time of sewage in each treatment zone, resulting in low treatment efficiency, which is difficult to achieve efficient and stable sewage treatment. At the same time, there is a lack of a system and method that can effectively screen and utilize heavy sludge and bacteria in sludge in the prior art, which cannot fully utilize the treatment potential of sludge, further limiting the improvement of sewage treatment efficiency.

[0005] In view of the deficiencies of the prior art, the present application aims to provide a carrier-based activated sludge intensification system and method for cyclone recovery, to solve the problems of poor sludge settling performance, large sludge production, weak anti-shock load capacity and low treatment efficiency in the traditional sewage treatment method, so as to realize efficient, stable and low-cost sewage treatment and meet the increasingly stringent environmental protection requirements. SUMMARY

[0006] (I) Technical problems to be solved In view of the deficiencies of the prior art, the present application provides a carrier-based activated sludge intensification system and method for cyclone recovery, to solve the problems of poor sludge settling performance, large sludge production, weak anti-shock load capacity and low treatment efficiency in the traditional sewage treatment method in the background art.

[0007] (II) Technical solutions To achieve the above-mentioned purpose, the present application provides the following technical solutions: a carrier-based activated sludge intensification system for cyclone recovery, comprising: a treatment tank for organic matter treatment of sewage added with a seed; a secondary sedimentation tank for solid-liquid separation of the sewage treated by the treatment tank; a preferred device for preferred separation treatment of heavy sludge, seed and light sludge formed after the solid-liquid separation of the secondary sedimentation tank; the preferred device is also used for recycling and adding a part of the heavy sludge and seed after the preference and a part of the sludge after the solid-liquid separation of the secondary sedimentation tank to the treatment tank in an external reflux mode to improve the bacterial flora of the treatment tank and the sludge characteristics.

[0008] Preferably, the treatment tank comprises an anaerobic tank, an anoxic tank and an aerobic tank; the anaerobic tank is used to decompose organic matter by controlling the aeration amount to ensure that the dissolved oxygen concentration in the tank is less than 0.2 mg / L, and to decompose complex organic matter into simple organic matter or inorganic matter; the anoxic tank is used to remove nitrate nitrogen in the sewage by denitrification to reduce the total nitrogen concentration; the aerobic tank is used to remove organic matter in the sewage to reduce the COD and BOD concentrations, and to remove part of the ammonia nitrogen, and also to convert the ammonia nitrogen into nitrate nitrogen by nitrification to create conditions for subsequent denitrification; the aerobic tank is also used to discharge a part of the treated sewage to the anoxic tank in an internal reflux mode to remove nitrate nitrogen in the sewage by denitrification.

[0009] Preferably, it further comprises a seed preparation module; the seed preparation module comprises a dewatering unit for dewatering a part of the light sludge produced after the preferred separation by the preferred device to form a seed, and a feeding unit for quantitatively feeding the prepared seed to the water inlet end of the treatment tank.

[0010] Preferably, the dewatering unit comprises a dewatering machine shell, the top of the dewatering machine shell is respectively provided with a feeding bin and a driving mechanism, and the bottom of the dewatering machine shell is provided with a water receiving tray; the inside of the dewatering machine shell is provided with a dewatering mechanism for electro-osmotic dewatering treatment of the light sludge; the dewatering mechanism comprises an electro-osmotic dewatering part and a conveying assembly for conveying the light sludge; the electro-osmotic dewatering part is used to dewater the light sludge in the conveying process of the conveying assembly by electro-osmosis, and the electro-osmotic dewatering part comprises two groups of electro-osmotic units, two electro-osmotic units are respectively used for electro-osmotic dewatering treatment of the preliminarily dewatered sludge and for secondary electro-osmotic dewatering treatment of the sludge after one round of electro-osmotic dewatering; and the electro-osmotic unit comprises a cathode plate and an anode plate; The inside of the dewatering machine shell is provided with a disturbance assembly between the two electro-osmotic units for tumbling treatment of the sludge after a round of electro-osmotic dewatering.

[0011] Preferably, the conveying assembly includes two groups of transmission shafts, and the outer surfaces of the two groups of transmission shafts are drivingly connected with the pressing filter belt and the bearing filter belt through pressing; The two groups of transmission shafts are drivingly connected through chain wheel members, and the driving mechanism is used for rotatingly driving the two chain wheel members.

[0012] Preferably, the electro-osmotic unit includes a movable frame fixed to the inside of the dewatering machine shell, the inside of the movable frame is provided with two guide grooves, and a pressing roller is arranged between the two guide grooves, the outer surface of the pressing roller is embedded with a plurality of anode plates, and the pressing roller is in close contact with the top of the pressing filter belt through the anode plates; The inside of the dewatering machine shell is fixedly connected with a sealing disc through a mounting frame, and the top of the sealing disc is in close contact with the bottom of the bearing filter belt, and the top of the sealing disc is fixedly connected with a plurality of cathode plates; The pressing roller rolls along the guide track of the guide groove in a horizontal or concave manner, and when the pressing roller rolls, the plurality of anode plates and the plurality of cathode plates are in a crossed state.

[0013] Preferably, the inside of the dewatering machine shell is fixedly connected with a fixed frame, and the bottom of the fixed frame is provided with a driving frame that can move up and down, the two sides of the driving frame are hingedly connected with sliding seats through transmission frames, the sliding seats are slidingly connected with the top of the movable frame in the electro-osmotic unit, and the pressing roller is rotatably connected in the inside of the sliding seat; The driving frame is slidingly connected to the bottom of the fixed frame through two guide rods, and the fixed frame is provided with a driving cylinder for driving the driving frame up and down.

[0014] Preferably, the disturbance assembly includes a guide roller, a poking roller and two directional rollers rotatably connected to the inside of the dewatering machine shell, and the outer surfaces of the guide roller and the two directional rollers are in contact with the pressing filter belt; The guide roller and the two directional rollers are used to support the middle part of the pressing filter belt upward to form a bulge A, and the poking roller is located in the inside of the bulge A of the pressing filter belt, and the outer surface of the poking roller is provided with a poking blade; The inside of the dewatering machine shell is fixedly connected with a mud scraping plate for scraping the inner side of the pressing filter belt of the bulge A.

[0015] Preferably, the two ends of the poking roller are drivingly connected with the guide roller or one of the directional rollers through a belt set.

[0016] The method for strengthening the activated sludge system based on the carrier-based cyclone recovery, comprising the following steps: S1, introduce the sewage added with the bacterial strain into a treatment tank to increase the attachment area of the microorganisms, the treatment tank comprising an anaerobic tank, an anoxic tank and an aerobic tank; In the anaerobic tank, by controlling the aeration amount, the dissolved oxygen concentration in the tank is ensured to be lower than 0.2 mg / L to decompose the organic matters and decompose the complex organic matters into simple organic matters or inorganic matters; In the anoxic tank, by denitrification, the nitrate nitrogen in the sewage is removed to reduce the total nitrogen concentration; In the aerobic tank, the organic matters in the sewage are removed to reduce the COD and BOD concentrations, and part of the ammonia nitrogen is removed, and the ammonia nitrogen is converted into nitrate nitrogen by nitrification; and part of the treated sewage is discharged into the anoxic tank by internal reflux to remove the nitrate nitrogen in the sewage by denitrification; S2, introduce the sewage treated by the treatment tank into a secondary sedimentation tank for solid-liquid separation, and directly discharge the supernatant after the solid-liquid separation; S3, use an optimal equipment to perform optimal separation treatment on the sludge formed after the solid-liquid separation of the secondary sedimentation tank to separate heavy sludge, bacterial strains and light sludge; S4, use external reflux to recycle and add part of the heavy sludge and bacterial strains after the optimization and part of the sludge after the solid-liquid separation of the secondary sedimentation tank to the treatment tank to improve the bacterial flora and sludge characteristics of the treatment tank; S5, perform dewatering treatment on part of the light sludge generated after the optimal separation by the optimal equipment to form bacterial strains, and quantitatively add the prepared bacterial strains to the water inlet end of the treatment tank, and the quantitative addition amount of the bacterial strains is adjusted according to the water quality and water amount of the water inlet end of the treatment tank, and the remaining light sludge is directly discharged to other dewatering equipment in the factory area for dewatering.

[0017] (Three) beneficial effects Compared with the prior art, the application provides a carrier-based activated sludge enhanced system and method for cyclone recovery, which has the following beneficial effects: The application improves the residence time of the sewage in each treatment zone through internal reflux and external reflux, enhances the metabolic activity of the microorganisms, and improves the sewage treatment efficiency; and through the sludge optimization equipment, the heavy sludge and bacterial strains are screened out and are refluxed to the biochemical system to improve the sludge settling performance, improve the effluent water quality, screen out loose light sludge such as flocculent sludge and filamentous bacteria, reduce the sludge production, and reduce the sludge treatment cost; the biochemical system does not need any reagent addition, does not need to be modified, reduces the operation cost, improves the sludge impact load resistance by leaving the heavy particle sludge and bacterial strains with high density, and improves the effluent water quality.

[0018] The present application can not only mechanically dewater the light sludge, but also can dewater the sludge by electro-osmosis, thereby improving the sludge dewatering efficiency and the solid content of the sludge, and the electro-osmosis dewatering device includes two groups of electro-osmosis dewatering devices for dewatering the sludge dewatered initially and for dewatering the sludge dewatered by the electro-osmosis, so that the sludge dewatered by the electro-osmosis is stirred by the stirring assembly and is dewatered by the other group of electro-osmosis dewatering devices, thereby preventing the water from moving from the anode to the cathode during the electro-osmosis dewatering, causing the water content of the sludge near the anode to decrease rapidly, the resistance to rise, and most of the voltage to be consumed near the anode, the voltage gradient of the remaining part to decrease, the dewatering driving force to decrease, the electro-osmosis flow to attenuate, the water content of the sludge after dewatering to increase from the anode to the cathode, and the dewatering to be uneven. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the active sludge strengthening system based on the carrier and the cyclone recovery of the present application; Figure 2 It is a cooperation schematic diagram of the strain preparation module of the present application; Figure 3 It is a structural schematic diagram of the dewatering unit of the present application; Figure 4 It is a structural schematic diagram of the dewatering mechanism of the present application; Figure 5 It is a structural schematic diagram of the electro-osmosis dewatering device of the present application; Figure 6 It is a structural schematic diagram of the suction dewatering device of the present application; Figure 7 It is a structural bottom view of the suction dewatering device of the present application; Figure 8 It is a sectional schematic diagram of the suction dewatering device of the present application; Figure 9 It is a sectional front view of the cleaning roller of the present application; Figure 10 It is a structural schematic diagram of the stirring assembly of the present application; Figure 11 It is a sectional front view of the stirring assembly of the present application; Figure 12 It is a schematic diagram of the principle of the embodiment 4 of the present application.

[0020] In the figure: 100, dewatering machine shell; 101, feeding bin; 102, driving mechanism; 103, water receiving tray; 200, electro-osmotic dewatering device; 201, cathode plate; 202, anode plate; 203, movable frame; 204, guide groove; 205, pressing roller; 206, sealing disc; 207, fixing frame; 208, driving frame; 209, transmission frame; 210, sliding seat; 211, driving cylinder; 300, conveying assembly; 301, transmission shaft; 302, pressing filter belt; 303, bearing filter belt; 304, chain wheel assembly; 400, disturbance assembly; 401, guide roller; 402, stirring roller; 403, directional roller; 404, belt group; 405, mud scraping plate; 500, suction dewatering device; 501, suction cylinder; 502, piston plate; 503, pressing plate; 504, transmission roller; 505, gear set; 506, eccentric wheel; 507, cleaning roller; 508, arc-shaped baffle; 509, gravity block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0022] Embodiment 1: Referring to the drawings Figure 1 and Figure 2 , the carrier-based cyclone recovery activated sludge enhanced system comprises: a treatment tank, the treatment tank is used for organic matter treatment of sewage added with bacteria; a secondary sedimentation tank, the secondary sedimentation tank is used for solid-liquid separation of the sewage treated by the treatment tank; a preferred device, the preferred device is used for preferred separation treatment of heavy sludge, bacteria and light sludge formed after solid-liquid separation of the secondary sedimentation tank; The preferred device is also used for recycling and adding a part of the heavy sludge and bacteria after the preferred treatment and a part of the sludge after the solid-liquid separation of the secondary sedimentation tank to the treatment tank in an external reflux mode, so as to improve the bacterial flora and sludge characteristics of the treatment tank. The preferred device is used for recycling and adding a part of the heavy sludge and bacteria after the preferred treatment and a part of the sludge after the solid-liquid separation of the secondary sedimentation tank to the anaerobic tank in an external reflux mode. The preferred device adopts a cyclone separator in the prior art, and the cyclone separator is used for separation treatment of heavy sludge, bacteria and light sludge in the sludge; Specifically, refer to the biochemical active fine particle sludge separator with sand selection and discharge function disclosed in patent publication No. CN119409273A.

[0023] It should be noted that the strain filler herein is an organic powder carrier (OPC), which is used to provide a larger microbial attachment area by adding the strain, has a larger specific surface area due to the particle size of the strain being about 50 microns, can increase the biomass of sludge, thereby increasing the sludge load and enhancing the removal capacity; Furthermore, since it contains a carbon source, the carbon source has a slow-release effect, can provide part of the denitrification carbon source, promote denitrification and nitrogen removal function, and after grinding, the particle size is about 50 microns, has a larger specific surface area, and contains a large amount of organic matter, which is not easily dissolved in water, can increase the sewage treatment load by 50%, the COD removal rate is 85.5%, the ammonia nitrogen removal rate is 95%, and the value reaches the value, that is, the value of the standard. The sewage treatment capacity is increased by 50%, that is, the sewage treatment load is increased by 50%, thereby enhancing the sewage treatment load of the process, and the settling rate; The physical properties of the carrier are shown in the following table: Table 1

[0024] The chemical properties of the carrier are shown in the following table: Table 2

[0025] Comparative Example 1 Two groups of completely identical and independent sewage treatment experimental devices were set up, including primary sedimentation tanks, anaerobic tanks, anoxic tanks, aerobic tanks, and secondary sedimentation tanks, etc., and were respectively recorded as experimental group and control group. The sludge concentration of the two groups was 3000 mg / L. During the test period, the influent was domestic sewage, and the treatment water quantity of the two groups was set to 1.5 t / d. The experimental device was kept running continuously, and the sludge was cultured until the sludge was mature and the effluent indicators (COD, TN, ammonia nitrogen) of the two groups were close. The above carrier was added to the experimental group, and the addition ratio of the carrier was 1000 mg / L. Stirring and mixing, continuously monitoring the effluent indicators (COD, TN, ammonia nitrogen) of the two groups; The treatment capacity of the first 15 days of the treatment capacity of the carrier and the treatment capacity of the carrier was 1.5 m 3 / d scale, continuous operation for 15 d.

[0026] After 15 days of culture, the treatment water quantity of the experimental group was adjusted to 2 t / d, and the effluent indicators (COD, ammonia nitrogen) of the two groups were continuously monitored and recorded. After 30 days, the treatment water quantity of the experimental group was adjusted to 2.25 t / d, and the effluent indicators (COD, ammonia nitrogen) of the two groups were continuously monitored and recorded. After 45 days, the treatment volume of the experimental group was adjusted to 2.5 t / d, and the effluent indicators (COD, ammonia nitrogen) of the two groups were continuously monitored and recorded for 15 days.

[0027] Please refer to Table 3 below for details.

[0028] Data Comparison: Based on the comparison of COD and ammonia nitrogen removal rates between the experimental group (2 t / d influent) and the control group (1.5 t / d influent), the experimental group (2.25 t / d influent) and the control group (1.5 t / d influent), and the experimental group (2.5 t / d influent) and the control group (1.5 t / d influent), it can be seen that by adding the loading agent, the wastewater treatment load can be increased by 50%, COD removal by 85.5%, and ammonia nitrogen removal rate by 95%, thereby improving the wastewater treatment load and sedimentation rate of the process.

[0029] The phenomenon of "water aversion" (i.e., increased hydrophobicity) exhibited by light sludge after electroosmotic dewatering is mainly due to changes in the sludge's microstructure and surface chemical properties. The specific mechanism is as follows: Reduced surface charge and decreased hydrophilicity Electroosmotic dehydration utilizes an electric field to cause the migration of cations adsorbed on the surface of sludge particles, thereby drawing water towards the cathode and removing it. This process not only removes water but also weakens the charge density on the surface of the sludge particles, particularly partially destroying the negatively charged EPS (extracellular polymeric substances). Combined with water release, structural collapse During electroosmosis, near the anode, the electro-oxidation reaction causes the microbial cells to rupture and EPS to decompose, releasing water molecules that were originally tightly bound together.

[0030] After the bound water is removed, the sludge structure becomes denser, capillary action weakens, and reabsorption capacity deteriorates.

[0031] Thermal effects and chemical changes During electroosmotic dehydration, ohmic heat is present. The increase in temperature will cause the polar functional groups (such as carboxyl and hydroxyl groups) in the sludge to decompose or denature. The reduction of these groups directly leads to a decrease in the attraction between the sludge surface energy and water molecules, which in turn enhances the adsorption of other microorganisms in the wastewater.

[0032] Improve treatment efficiency: By using internal and external recirculation, the residence time of wastewater in each treatment zone is increased, enhancing the metabolic activity of microorganisms and improving wastewater treatment efficiency.

[0033] Optimize sludge characteristics: Through sludge selection equipment, heavy sludge and microbial strains are screened out and returned to the biological system to improve sludge settling performance and enhance effluent quality.

[0034] Reduce sludge production: Screening removes loose, lightweight sludge such as flocculent sludge and filamentous bacteria, reducing sludge production and lowering sludge treatment costs.

[0035] No reagents required: The biochemical system requires no reagents and no modifications are needed, reducing operating costs.

[0036] Improve shock load resistance: Leave behind dense, heavy granular sludge and microbial inoculum to improve the sludge's resistance to shock loads and enhance effluent quality. This can be used for in-situ expansion and quality improvement.

[0037] See attached document Figure 1 and Figure 2 The treatment tanks include anaerobic tanks, anoxic tanks, and aerobic tanks; Anaerobic tanks are used to decompose organic matter by controlling the aeration rate to ensure that the dissolved oxygen concentration in the tank is below 0.2 mg / L, and at the same time, to decompose complex organic matter into simple organic or inorganic matter. Anoxic tanks are used to remove nitrate nitrogen from wastewater and reduce total nitrogen concentration through denitrification. The aerobic tank is used to remove organic matter from wastewater, reduce COD and BOD concentrations, remove some ammonia nitrogen, and convert ammonia nitrogen into nitrate nitrogen through nitrification, creating conditions for subsequent denitrification. The aerobic tank is also used to discharge a portion of the treated wastewater into the anoxic tank via internal recirculation, where nitrate nitrogen is removed through denitrification.

[0038] See attached document Figure 2 It also includes a microbial strain preparation module; The microbial inoculum preparation module includes a dewatering unit for dewatering a portion of the light sludge produced after separation by the optimization equipment to form microbial inoculum, and a dispensing unit for quantitatively dispensing the prepared microbial inoculum to the inlet of the treatment tank.

[0039] See attached document Figure 1 and Figure 2 An enhancement method for a carrier-based cyclone recovery activated sludge enhancement system includes the following steps: S1. Introduce wastewater containing added bacteria into the treatment tank to increase the attachment area of ​​microorganisms. The treatment tank includes an anaerobic tank, an anoxic tank, and an aerobic tank. In the anaerobic tank, the dissolved oxygen concentration in the tank is kept below 0.2 mg / L by controlling the aeration rate, so as to decompose organic matter and break down complex organic matter into simple organic or inorganic matter. In the anoxic tank, nitrate nitrogen in the wastewater is removed through denitrification, thereby reducing the total nitrogen concentration; In the aerobic tank, organic matter in the wastewater is removed, COD and BOD concentrations are reduced, and some ammonia nitrogen is removed. The ammonia nitrogen is converted into nitrate nitrogen through nitrification. A portion of the treated wastewater is also discharged into the anoxic tank through internal recirculation, where nitrate nitrogen is removed through denitrification. The aerobic tank is aerated by an aeration device to maintain the dissolved oxygen concentration in the tank within a specified range in order to meet the growth and metabolic needs of aerobic microorganisms. The anaerobic tank, anoxic tank, and aerobic tank are connected by pipes, and flow regulation devices are installed on the pipes to control the flow rate and volume of sewage between the tanks. S2. The wastewater treated in the treatment tank is introduced into the secondary sedimentation tank for solid-liquid separation, and the supernatant after solid-liquid separation is directly discharged. S3. Optimized equipment is used to separate heavy sludge, microorganisms, and light sludge from the solid-liquid separation in the secondary sedimentation tank. The separation parameters (such as pressure and flow rate) of the hydrocyclone separator are optimized according to the properties of the sludge and the treatment requirements. S4. A portion of the selected heavy sludge and microbial strains, along with a portion of the sludge separated from the solid-liquid mixture in the secondary sedimentation tank, are circulated back into the treatment tank via external reflux to improve the microbial community and sludge characteristics of the treatment tank. The reflux ratio of the external reflux method is dynamically adjusted according to the operating status and treatment effect of the treatment tank. Specifically, a portion of the selected heavy sludge and microbial strains, along with a portion of the sludge separated from the solid-liquid mixture in the secondary sedimentation tank, are circulated back into the anaerobic tank via external reflux. S5. A portion of the light sludge produced after separation by the optimized equipment is dewatered to form microbial inoculum. Specifically, the light sludge is dewatered by electro-osmosis in the dewatering unit. The resulting sludge cake is then dried to become a solid carrier. Finally, the solid carrier is crushed into 50-micron powder particles, i.e., organic powder carrier (OPC). The prepared microbial inoculum is quantitatively added to the inlet of the treatment tank. The quantitative amount of microbial inoculum is adjusted according to the wastewater quality and quantity at the inlet of the treatment tank. The remaining light sludge is directly discharged to other dewatering equipment in the plant for dewatering.

[0040] The gases generated during the process are collected and treated to reduce environmental pollution. Regularly maintain and clean equipment such as treatment tanks, secondary sedimentation tanks, and hydrocyclones to ensure normal operation and treatment effectiveness.

[0041] See attached document Figures 3 to 11 The dewatering unit includes: a dewatering machine housing 100, a feeding hopper 101 and a drive mechanism 102 respectively provided on the top of the dewatering machine housing 100, and a water receiving tray 103 provided on the bottom of the dewatering machine housing 100. The feed hopper 101 is used to discharge the light sludge that needs to be used for bacterial inoculum preparation into the dewatering machine housing 100 for mechanical and electro-osmotic dewatering. The water receiving tray 103 is used to uniformly receive and export the water after mechanical and electro-osmotic dewatering. The dewatering machine housing 100 is equipped with a dewatering mechanism for electro-osmotic dewatering of light sludge; the dewatering mechanism includes an electro-osmotic dewatering component 200 and a conveying assembly 300 for conveying the light sludge; The electro-osmotic dewatering unit 200 is used to dewater light sludge during the conveying process of the conveying component 300 by mechanical means, electro-osmosis, or a combination of mechanical and electro-osmosis. The electro-osmotic dewatering unit 200 includes two sets of electro-osmotic units, which are used to perform electro-osmotic dewatering treatment on the sludge after preliminary dewatering and to perform secondary electro-osmotic dewatering treatment on the sludge after one round of electro-osmotic dewatering. The electro-osmotic unit includes a cathode plate 201 and an anode plate 202. The electro-osmotic dewatering unit 200 includes two sets of electro-osmotic units, which are used to increase the frequency of electro-osmotic dewatering, thereby increasing the dewatering efficiency and effect of the sludge. It should be noted here that the anode plate 202 is located above the sludge, and the cathode plate 201 is located below the sludge. Through the combined action of the anode plate 202 and the cathode plate 201, the water in the sludge can be quickly moved to the position of the cathode plate 201, forming an electro-osmotic dewatering process. The dewatering machine housing 100 is equipped with a disturbance component 400, which is located between two electro-osmosis units and is used to agitate the sludge after one round of electro-osmosis dewatering. The sludge after one round of electro-osmotic dewatering is turned over by the disturbance component 400, and a second electro-osmotic dewatering is carried out by another set of electro-osmotic dewatering components 200. This prevents water from moving from the anode to the cathode during the electro-osmotic dewatering process, which would cause the sludge moisture content near the anode to decrease rapidly and the resistance to increase. Consequently, most of the voltage would be consumed near the anode, and the voltage gradient of the remaining part would decrease, the dewatering driving force would decrease, and problems such as the decrease in electro-osmotic flow rate, the increase in sludge moisture content from the anode to the cathode after dewatering, and uneven dewatering would occur.

[0042] See attached document Figure 4 The conveying assembly 300 includes two sets of several drive shafts 301. The outer surfaces of the two sets of several drive shafts 301 are connected by a pressing filter belt 302 and a carrying filter belt 303. Both sets of several drive shafts 301 are connected by a sprocket 304, and the drive mechanism 102 is used to drive the two sets of sprockets 304 to rotate. It should be noted here that the sprocket component 304 consists of a sprocket and a transmission chain, and is used to improve the orderliness and stability of the rotation of its several transmission shafts 301, and to prevent slippage during the movement of the filter belt 302 and the filter belt 303.

[0043] See attached document Figure 5 , Figure 6 and Figure 8 The electro-osmosis unit includes a movable frame 203 with the mounting bracket fixed inside the dewatering machine housing 100. The movable frame 203 has two guide grooves 204 inside, and a pressing roller 205 is inserted between the two guide grooves 204. Several anode plates 202 are embedded in the outer surface of the pressing roller 205, and the pressing roller 205 is in close contact with the top of the pressing filter belt 302 through the anode plates 202. As the pressing roller 205 rolls inside the guide groove 204, it drives several anode plates 202 embedded in its outer surface to move synchronously on the pressing filter belt 302. During this movement, the anode plates 202 and the cathode plates 201 below form a stable electric field, while the pressing roller 205 applies pressure to the pressing filter belt 302, achieving a combination of mechanical extrusion and electro-osmotic dewatering. This synergistic mechanism not only enhances the dewatering effect but also reduces sludge residue on the filter belt, lowering the difficulty of subsequent cleaning. Furthermore, the rolling speed of the pressing roller 205 can be adjusted according to the sludge moisture content; when the moisture content is high, the speed can be appropriately reduced to extend the dewatering time; when the moisture content is low, the speed can be increased to improve processing efficiency. A sealing disc 206 is fixedly connected inside the casing 100 of the dewatering machine via a mounting bracket, and the top of the sealing disc 206 is in close contact with the bottom of the carrying filter belt 303. Several cathode plates 201 are fixedly connected to the top of the sealing disc 206. The sealing disc 206 is in close contact with the bottom of the carrying filter belt 303. This provides stable support for mechanical extrusion and electro-osmotic dewatering, ensuring the integrity of the sludge layer during dewatering. Furthermore, the pre-spaced spacing between the cathode plates 201 fixed at the top of the sealing disc 206 facilitates the rapid entry of filtered water into the interior of the sealing disc 206, preventing water accumulation below the sludge layer and thus maintaining the dewatering effect. Simultaneously, the sealing disc 206 is made of corrosion-resistant material, preventing erosion by harmful substances in wastewater, extending its service life, and reducing equipment maintenance costs. The pressing roller 205 rolls horizontally or concavely along the guide track of the guide groove 204, and when the pressing roller 205 rolls, several anode plates 202 and several cathode plates 201 are in an intersecting state. The pressing roller 205 can roll horizontally or concavely along the guide track of the guide groove 204. Horizontal rolling is suitable for sludge with conventional moisture content and can achieve uniform dewatering; concave rolling can apply greater squeezing force to the sludge and is suitable for sludge with high moisture content, further improving dewatering efficiency. During the rolling process, several anode plates 202 and several cathode plates 201 are arranged in an intersecting manner. This intersecting layout can expand the electric field coverage and reduce the electric field blind zone, so that all parts of the sludge can be fully subjected to the electric field, ensuring the uniformity of dewatering. In addition, the reciprocating rolling pressing frequency and electroosmosis frequency of the pressing roller 205 are both greater than the transmission speed of the conveying component 300. This not only increases the electroosmotic dewatering frequency but also increases the electric field distribution points, avoiding excessively high local resistance and further improving the uniformity of the dewatering effect.

[0044] See attached document Figure 5 The dehydrator housing 100 is fixedly connected to a fixed frame 207, and the bottom of the fixed frame 207 is provided with a drive frame 208 that can move up and down. Both sides of the drive frame 208 are hinged to sliding seats 210 through transmission frames 209. The sliding seats 210 are slidably connected to the top of the movable frame 203 in the electroosmosis unit, and the pressing roller 205 is rotatably connected to the inside of the sliding seat 210. The drive frame 208 is slidably connected to the bottom of the fixed frame 207 via two guide rods. The fixed frame 207 is equipped with a drive cylinder 211 for driving the drive frame 208 up and down. The power transmission path for the drive frame 208 is as follows: The drive cylinder 211 is connected to an external control system. Under the command of the control system, the drive cylinder 211 drives the drive frame 208 to move up and down along two guide rods. The up and down movement of the drive frame 208 is transmitted to the sliding seats 210 through the transmission frames 209 on both sides. Since the transmission frames 209 and the sliding seats 210 are hinged, when the drive frame 208 rises, the transmission frames 209 drive the two sliding seats 210 to move apart; when the drive frame 208 falls, the transmission frames 209 drive the two sliding seats 210 to move relative to each other. This power transmission path is simple and efficient, ensuring the synchronicity and stability of the movement of the sliding seats 210 and avoiding differences in dehydration effect caused by inconsistent movement.

[0045] The synergistic effect of the sliding seat 210 and the pressing roller 205: The sliding seat 210 is slidably connected to the top of the movable frame 203 in the electro-osmosis unit, and the pressing roller 205 is rotatably connected inside the sliding seat 210. When the sliding seat 210 moves relative to or away from each other, the pressing roller 205 rolls laterally within the guide groove 204, achieving electro-osmotic dewatering of sludge in different ranges. This synergistic effect allows the pressing roller 205 to adjust the dewatering range according to the distribution of sludge on the filter belt. For the edge of the filter belt or local sludge accumulation areas, the movement of the sliding seat 210 allows the pressing roller 205 to precisely act on that area, ensuring consistent dewatering effect for the sludge across the entire filter belt. Simultaneously, the sliding connection of the sliding seat 210 uses a high-precision guide rail, reducing motion friction, lowering equipment wear, and improving equipment operational stability and service life.

[0046] See attached document Figure 10 and Figure 11 The disturbance component 400 includes a guide roller 401, a push roller 402, and two directional rollers 403 rotatably connected inside the dewatering machine housing 100. The outer surfaces of the guide roller 401 and the two directional rollers 403 are in contact with the pressing filter belt 302. The guide roller 401 and the two directional rollers 403 are used to support the raised section A of the middle part of the pressing filter belt 302 upward. The push roller 402 is located inside the raised section A of the pressing filter belt 302, and the outer surface of the push roller 402 is equipped with push blades. The layout of guide rollers 401 and directional rollers 403 and the principle of the raised space formation: Guide rollers 401 and two directional rollers 403 are arranged in a triangular pattern inside the dewatering machine housing 100. This triangular layout causes a raised space A to be formed between the pressing filter belt 302 and the carrying filter belt 303 due to the support of the three rollers when the pressing filter belt 302 passes through the guide rollers 401 and two directional rollers 403. The size of this raised space can be controlled by adjusting the relative positions of the three rollers, generally determined according to the thickness and moisture content of the sludge, ensuring sufficient space for the agitator rollers 402 to turn the sludge. The formation of the raised space not only provides a working area for the agitation components but also allows the sludge to temporarily remain in this area, prolonging the agitation time and ensuring that all parts of the sludge are fully turned.

[0047] The mechanism of sludge agitation by the agitator roller 402: The agitator roller 402 is located inside the raised section A of the press filter belt 302, and agitator blades are installed on its outer surface. When the agitator roller 402 rotates, the agitator blades agitate the sludge after one round of electro-osmotic dewatering. This agitation breaks the static structure of the sludge layer, allowing the sludge particles with low moisture content near the anode to mix thoroughly with the sludge particles with high moisture content near the cathode, avoiding the problem of rapid decrease in moisture content and increase in resistance near the anode caused by water moving from the anode to the cathode. At the same time, the agitated sludge layer has a looser structure, which is conducive to the uniform distribution of the electric field during the subsequent secondary electro-osmotic dewatering process, improving dewatering efficiency and uniformity. The agitator blades adopt a spiral design, which reduces damage to the sludge particles during agitation, ensures the integrity of the sludge, and facilitates subsequent microbial inoculum preparation.

[0048] A scraper 405 is fixedly connected inside the dewatering machine housing 100 for scraping the inner side of the pressing filter belt 302 of the raised A. The scraper blade 405 is fixedly connected inside the dewatering machine housing 100, with its scraping end in close contact with the inner side of the raised A-shaped press filter belt 302. During the movement of the press filter belt 302, the scraper blade 405 continuously scrapes the sludge adhering to the inner side of the filter belt. This scraping method effectively prevents sludge from adhering to the filter belt for extended periods, avoiding clogging of the filter belt pores and ensuring the filter belt's filtration performance. The scraper blade 405 is made of an elastic material, such as polyurethane, which ensures effective scraping while preventing damage to the filter belt surface. Simultaneously, the installation angle of the scraper blade 405 can be adjusted according to the direction of filter belt movement and the adhesion of the sludge, generally at a 30-45 degree angle to the direction of filter belt movement for optimal scraping effect. The scraped sludge falls back onto the supporting filter belt 303 and enters the subsequent processing stage along with other sludge, avoiding sludge waste.

[0049] See attached document Figure 10 Both ends of the actuating roller 402 are connected to the guide roller 401 or one of the directional rollers 403 via belt assembly 404; The agitator roller 402 is connected to the guide roller 401 or one of the directional rollers 403 via a belt assembly 404. This allows the rotational force on the guide roller 401 or directional roller 403 to be transmitted to the agitator roller 402, causing the agitator roller 402 to rotate synchronously. The rotation of the agitator roller 402 can turn over the sludge after one round of electro-osmotic dewatering, preventing water from moving from the anode to the cathode during the electro-osmotic dewatering process, which would cause the sludge near the anode to rapidly decrease in moisture content and increase in resistance.

[0050] Example 2: The difference from Example 1 is that; See attached document Figures 6 to 10The dewatering machine housing 100 is equipped with a vacuum dewatering component 500 for vacuuming the moisture in the sludge. The vacuum dewatering component 500 includes a suction cylinder 501 fixed inside the dewatering machine housing 100 by a mounting bracket, and a piston plate 502 that can move up and down is provided inside the suction cylinder 501. Two suction pipes are fixedly connected to the top of the suction cylinder 501, and the two suction pipes are respectively connected to the interior of two sealing discs 206. One-way valves are installed on both suction pipes, and several one-way valve plates are provided inside the piston plate 502. A pressing plate 503 is slidably connected inside the dewatering machine housing 100 in a vertical sliding manner, and the pressing end of the pressing plate 503 is fixedly connected to the top of the piston plate 502. The suction dewatering component 500 creates negative pressure through the up-and-down movement of the piston plate 502 within the suction cylinder 501, thereby vacuum-suctioning the moisture from the sludge. Specifically, when the piston plate 502 moves downwards, the volume inside the suction cylinder 501 increases, the pressure decreases, and suction force is applied to the two sealing discs 206 through the two suction pipes. Since the sealing discs 206 are in close contact with the bottom of the supporting filter belt 303, the suction force acts directly on the sludge layer on the supporting filter belt 303, accelerating the filtration of moisture from the sludge. This negative pressure suction method, combined with mechanical extrusion and electro-osmotic dewatering, significantly improves sludge dewatering efficiency and further reduces the moisture content of the dewatered sludge. Simultaneously, this method effectively prevents problems such as rapid decrease in sludge moisture content near the anode, increase in resistance, and decrease in electro-osmotic flow rate and uneven dewatering during electro-osmotic dewatering, ensuring the stability and efficiency of the dewatering process.

[0051] The synergistic effect of the suction pipes and one-way valves: Two suction pipes fixedly connected to the top of the suction cylinder 501 are respectively connected to the interior of two sealing discs 206, and each suction pipe is equipped with a one-way valve. The one-way valves ensure that when the piston plate 502 moves downward, the suction pipes only draw in water from the sealing discs 206, preventing water backflow; when the piston plate 502 moves upward, the one-way valves close, preventing water in the suction cylinder 501 from flowing back into the sealing discs 206. This synergistic effect ensures the continuity and effectiveness of negative pressure suction and improves water suction efficiency. Meanwhile, the one-way valves are made of corrosion-resistant and wear-resistant materials, such as stainless steel, ensuring long-term stable operation in wastewater environments. The diameter of the suction pipes is determined based on the area of ​​the sealing discs 206 and the expected suction flow rate; generally, pipes with a diameter of 20-50 mm are selected to ensure sufficient suction capacity.

[0052] The piston plate 502 is internally equipped with several one-way valves. Their function is to allow water in the suction cylinder 501 to be discharged to the outside when the piston plate 502 moves upward; when the piston plate 502 moves downward, the one-way valves close to prevent outside air from entering the suction cylinder 501, ensuring a stable negative pressure within the suction cylinder 501. The number and orifice diameter of the one-way valves are determined based on the volume of the suction cylinder 501 and the movement speed of the piston plate 502. Generally, 4-8 one-way valves are installed on each piston plate, with an orifice diameter of 5-10mm, to ensure rapid water discharge without affecting the piston plate's movement efficiency. The one-way valves are made of elastic rubber material, possessing good sealing performance and wear resistance, effectively preventing water leakage and valve damage.

[0053] The dehydrator housing 100 is rotatably connected to a transmission roller 504, and the transmission roller 504 is connected to the guide roller 401 via a gear set 505. An eccentric wheel 506 for driving the pressing plate 503 downward is fixedly connected to the outer surface of the transmission roller 504, and a spring set for pressing the pressing plate 503 upward is fixed to the top of the suction cylinder 501. The drive roller 504 is connected to the guide roller 401 via a gear set 505. This transmission method efficiently transmits the rotational power of the guide roller 401 to the drive roller 504. When the guide roller 401 in the disturbance assembly 400 rotates under the drive of the pressing filter belt 302, the drive roller 504 rotates synchronously through the meshing transmission of the gear set 505. The rotation of the drive roller 504 then drives the eccentric wheel 506 fixedly connected to its outer surface to rotate. During the rotation, the eccentric wheel 506 exerts downward pressure on the pressing plate 503. When the long axis of the eccentric wheel 506 moves away from the pressing plate 503, the spring set fixed at the top of the suction cylinder 501 generates an upward elastic force on the pressing plate 503, causing the pressing plate 503 to drive the piston plate 502 to move upward. This transmission mechanism enables the reciprocating up-and-down movement of the piston plate 502 without the need for an additional power unit. It effectively utilizes the driving force of the disturbance component 400, reducing equipment energy consumption, and simultaneously automatically matches the negative pressure suction frequency with the sludge conveying speed. When the sludge conveying speed is too fast, the rotation speed of the guide roller 401 increases, and the rotation speeds of the transmission roller 504 and eccentric wheel 506 also increase accordingly, raising the reciprocating frequency of the piston plate 502 and consequently increasing the negative pressure suction frequency. Conversely, when the sludge conveying speed is too slow, the negative pressure suction frequency decreases, forming an adaptive negative pressure dewatering working mode that ensures the stability of the dewatering effect.

[0054] Example 3: The difference from Example 1 is that; See attached document Figure 8 and Figure 9A hollow cleaning roller 507 is rotatably connected inside the dehydrator housing 100. The outer surface of the cleaning roller 507 is provided with several spray nozzles and brushes, and the spray nozzles and brushes are arranged in a cross pattern. The bottom of the suction cylinder 501 is connected to the inside of the cleaning roller 507 through an output pipe. An arc-shaped baffle 508 is rotatably arranged inside the suction cylinder 501, and a center weight block 509 is installed in the middle part of the arc-shaped baffle 508. The cleaning roller 507 is connected to the drive shaft 301 in the conveying assembly 300 via a sprocket and chain. This transmission method ensures that the rotational speed of the cleaning roller 507 is synchronized with the transmission speed of the conveying assembly 300. When the drive shaft 301 in the conveying assembly 300 rotates under the drive of the drive mechanism 102, the cleaning roller 507 rotates synchronously through the transmission action of the sprocket and chain. This synchronous transmission method allows the cleaning roller 507 to automatically start cleaning work according to the actual situation of sludge dewatering and conveying. When the conveying assembly 300 stops running, the cleaning roller 507 also stops rotating, avoiding energy waste. At the same time, the sprocket and chain drive has the advantages of high transmission efficiency and low maintenance cost, making it suitable for long-term operation in the harsh environment of sewage treatment equipment.

[0055] The outer surface of the cleaning roller 507 is equipped with several rows of nozzles and brushes, arranged in a crisscross pattern. This structural design allows the water jets from the nozzles and the mechanical wiping action of the brushes to work synergistically, improving the cleaning effect on the filter belt 303. The nozzles spray high-pressure water onto the surface of the filter belt 303, washing away sludge particles and impurities adhering to the belt; the brushes mechanically wipe the surface of the belt, removing stubborn stains and fine particles, preventing clogging of the belt pores. The crisscross arrangement ensures that every area of ​​the filter belt surface is thoroughly rinsed and wiped, avoiding cleaning dead spots. The nozzle diameter and spacing are determined according to the material and pore size of the filter belt, generally with a diameter of 1-3 mm and a spacing of 10-20 mm, to ensure sufficient water pressure and coverage. The brushes are made of nylon, which has good wear resistance and elasticity, effectively cleaning the filter belt while avoiding damage to its surface.

[0056] The water flow transmission path between the suction cylinder 501 and the cleaning roller 507 is as follows: The bottom of the suction cylinder 501 is connected to the interior of the cleaning roller 507 via an output pipe. When the piston plate 502 moves downward, a negative pressure is created inside the suction cylinder 501. The water drawn in is then transferred to the interior of the cleaning roller 507 through the output pipe under pressure as the piston plate 502 moves upward. This water flow transmission path utilizes the negative pressure suction and pressure drainage functions of the suction cylinder 501, eliminating the need for additional power devices such as water pumps, thus reducing equipment costs and energy consumption. A pressure regulating valve is installed on the output pipe to adjust the water pressure according to cleaning needs. For heavily contaminated filter belts, the pressure is appropriately increased; for lightly contaminated filter belts, the pressure is reduced to avoid water waste. Simultaneously, the output pipe uses corrosion-resistant pipes, such as PVC pipes or stainless steel pipes, to prevent harmful substances in the water flow from corroding the pipes and ensure smooth water flow.

[0057] The synergistic effect of the arc-shaped baffle 508 and the center of gravity block 509: An arc-shaped baffle 508 is rolled inside the cleaning roller 507, and a center of gravity block 509 is installed in the middle of the arc-shaped baffle 508. The function of the arc-shaped baffle 508 is to block the nozzles in the lower half of the cleaning roller 507, ensuring that the water inside the cleaning roller 507 can only be sprayed out through the upper nozzles, so that the water flow can accurately act on the surface of the filter belt 303, improving cleaning efficiency. The center of gravity block 509 ensures that the arc-shaped baffle 508 maintains a stable position during the rotation of the cleaning roller 507, and will not shift with the rotation of the cleaning roller 507. Due to the gravity of the center of gravity block 509, the arc-shaped baffle 508 always adheres to the inner wall of the cleaning roller 507, effectively blocking the nozzles in the lower half, and ensuring stable water pressure and flow rate in the upper half of the nozzles. The curved baffle 508 is made of lightweight, corrosion-resistant materials, such as plastic or aluminum alloy, which reduces the overall weight of the cleaning roller 507 while ensuring its service life. The center of gravity block 509 is made of high-density materials, such as lead or cast iron, to ensure sufficient gravity to keep the curved baffle 508 stable.

[0058] Example 4: The difference from Example 1 is that; See attached document Figure 12 The carrier-based cyclone recovery activated sludge enhancement system also includes: A rotation speed detection module is installed at the end of the pressing roller 205 to acquire the rotation speed signal of the pressing roller 205 in real time. The control module is communicatively connected to the speed detection module and is used to execute the speed-voltage mapping relationship and output voltage control commands. The speed detection module is a magneto-electric encoder or photoelectric encoder, and its output signal is transmitted to the control module via RS-485, CAN or 4-20mA analog signal. An adjustable DC power supply is connected to the control module to provide a continuously adjustable DC voltage of 0-60V to the cathode plate 201 and anode plate 202 according to the voltage control command. The adjustable DC power supply has a voltage response time ≤10ms, a current output capability ≥30A, and remote start / stop and fault feedback functions. The control module is a PLC, industrial PC or embedded microcontroller, and can communicate with the host computer via fieldbus or wireless means; The adjustable DC power supply is connected to the cathode plate 201 and the anode plate 202 via quick-connect terminals or waterproof connectors for quick maintenance and replacement. The safety protection module is used to cut off or limit the output of the adjustable DC power supply in case of overvoltage, overcurrent, short circuit or abnormal temperature.

[0059] The security protection module includes: A voltage limit latch is used to prevent the output voltage from exceeding a set maximum value. A current limit latch is used to prevent the output current from exceeding the set maximum value. A temperature sensor is used to monitor the temperature of the cathode plate 201 and / or the anode plate 202 and reduce or cut off the output when the temperature exceeds the limit.

[0060] The maximum voltage and maximum current are specified based on the actual anode and cathode conditions and the sludge dewatering situation. In this embodiment, the higher the rotation speed and the shorter the residence time, the higher the sludge moisture content, so a higher voltage can be applied to enhance dewatering; Conversely, the lower the rotation speed, the longer the residence time, and the more likely the anode side is to become too dry, which requires reducing the voltage to prevent energy waste and sludge coking.

[0061] Therefore, by using the rotational speed of the pressing roller 205 as a feedback signal to adjust the voltage of the anode and cathode in real time, the problem of electric field imbalance can be fundamentally solved, ensuring that the electric field strength and the water content of the sludge are dynamically matched throughout the electro-osmotic dewatering process, thus achieving efficient, uniform, and low-energy dewatering. The adaptive adjustment method for electric field intensity includes the following steps: A1. Real-time detection of the rotational speed of the pressing roller 205 to obtain the rotational speed signal; A2. Input the speed signal into the control module and calculate the target voltage value according to the preset speed-voltage mapping relationship; A3. Control the adjustable DC power supply to output voltage to the cathode plate 201 and anode plate 202 according to the target voltage value, so as to change the electric field strength in real time. A4. When the rotational speed is below the first threshold, the target voltage value is automatically reduced; when the rotational speed is above the second threshold, the target voltage value is automatically increased. A5. After each voltage adjustment, monitor the rate of change of the dehydration current. If the rate of change exceeds the preset safety value, then reverse at least a portion of the adjustment amount.

[0062] The speed-voltage mapping relationship can be at least one of a piecewise linear function, a lookup table, or a PID closed-loop algorithm.

[0063] The first and second thresholds are calibrated offline based on sludge properties, moisture content targets, and device specifications, and can be corrected online.

[0064] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A carrier-based cyclone recovery activated sludge enhancement system, characterized in that, include: A treatment tank, wherein the treatment tank is used to treat organic matter in wastewater containing added bacteria; A secondary sedimentation tank is used for solid-liquid separation of wastewater after treatment in the treatment tank. Preferred equipment is used for the preferred separation treatment of heavy sludge, microorganisms and light sludge formed after solid-liquid separation in a secondary sedimentation tank. The preferred equipment is also used to circulate a portion of the selected heavy sludge and microbial strains, as well as a portion of the sludge after solid-liquid separation in the secondary sedimentation tank, into the treatment tank via external reflux, so as to improve the microbial community and sludge characteristics of the treatment tank.

2. The carrier-based cyclone recovery activated sludge enhancement system according to claim 1, characterized in that: The treatment tank includes an anaerobic tank, an anoxic tank, and an aerobic tank; The anaerobic tank is used to decompose organic matter by controlling the aeration rate to ensure that the dissolved oxygen concentration in the tank is below 0.2 mg / L, and at the same time, to decompose complex organic matter into simple organic matter or inorganic matter. The anoxic tank is used to remove nitrate nitrogen from wastewater and reduce the total nitrogen concentration through denitrification. The aerobic tank is used to remove organic matter from wastewater, reduce COD and BOD concentrations, remove some ammonia nitrogen, and convert ammonia nitrogen into nitrate nitrogen through nitrification, creating conditions for subsequent denitrification. The aerobic tank is also used to discharge a portion of the treated wastewater into the anoxic tank via internal recirculation, where nitrate nitrogen is removed through denitrification.

3. The carrier-based cyclone recovery activated sludge enhancement system according to claim 2, characterized in that: It also includes a microbial strain preparation module; The microbial strain preparation module includes a dewatering unit for dewatering a portion of the light sludge produced after selective separation by the optimization equipment to form microbial strains, and a dispensing unit for quantitatively dispensing the prepared microbial strains to the inlet of the treatment tank.

4. The carrier-based cyclone recovery activated sludge enhancement system according to claim 3, characterized in that: The dewatering unit includes: a dewatering machine housing, with a feeding bin and a drive mechanism respectively provided on the top of the dewatering machine housing, and a water receiving tray provided on the bottom of the dewatering machine housing; The dewatering machine housing is equipped with a dewatering mechanism for electro-osmotic dewatering of light sludge. The dewatering mechanism includes an electro-osmotic dewatering element and a conveying assembly for conveying light sludge; The electro-osmotic dewatering unit is used to dewater light sludge during the conveying process of the conveying component by electro-osmosis. The electro-osmotic dewatering unit includes two sets of electro-osmotic units. The two electro-osmotic units are used to perform electro-osmotic dewatering treatment on the initially dewatered sludge and to perform secondary electro-osmotic dewatering treatment on the sludge after one round of electro-osmotic dewatering. The electro-osmotic unit includes a cathode plate and an anode plate. The dewatering machine housing is equipped with a disturbance component located between two electro-osmosis units, which is used to agitate the sludge after one round of electro-osmosis dewatering.

5. The carrier-based cyclone recovery activated sludge enhancement system according to claim 4, characterized in that: The conveying assembly includes two groups of several drive shafts, and the outer surfaces of the two groups of several drive shafts are connected by a pressing filter belt and a carrying filter belt. Two sets of several drive shafts are connected by sprockets, and the drive mechanism is used to drive the rotation of the two sets of sprockets.

6. The carrier-based cyclone recovery activated sludge enhancement system according to claim 5, characterized in that: The electro-osmosis unit includes a movable frame with a mounting bracket fixed inside the dewatering machine housing. The movable frame has two guide grooves inside, and a pressing roller passes between the two guide grooves. Several anode plates are embedded in the outer surface of the pressing roller, and the pressing roller is in close contact with the top of the pressing filter belt through the anode plates. The inside of the dewatering machine housing is fixedly connected to a sealing disc via a mounting bracket, and the top of the sealing disc is in close contact with the bottom of the filter belt. Several cathode plates are fixedly connected to the top of the sealing disc. The pressing roller rolls horizontally or concavely along the guide track of the guide groove, and when the pressing roller rolls, several anode plates and several cathode plates are in an intersecting state.

7. The carrier-based cyclone recovery activated sludge enhancement system according to claim 6, characterized in that: The dehydrator housing is fixedly connected to a fixed frame, and the bottom of the fixed frame is provided with a drive frame that can move up and down. Both sides of the drive frame are hinged to sliding seats through a transmission frame. The sliding seats are slidably connected to the top of the movable frame in the electroosmosis unit, and the pressing roller is rotatably connected to the inside of the sliding seats. The drive frame is slidably connected to the bottom of the fixed frame via two guide rods, and the fixed frame is equipped with a drive cylinder for driving the drive frame up and down.

8. The carrier-based cyclone recovery activated sludge enhancement system according to claim 5, characterized in that: The disturbance component includes a guide roller, a push roller, and two directional rollers rotatably connected inside the dewatering machine housing, and the outer surfaces of the guide roller and the two directional rollers are in contact with the pressing filter belt; The guide roller and two directional rollers are used to support the raised section A of the middle part of the filter belt, and the agitator roller is located inside the raised section A of the filter belt, and agitator blades are installed on the outer surface of the agitator roller. The dewatering machine housing is internally fixedly connected to a scraper blade for scraping the inner side of the pressing filter belt of protrusion A.

9. The carrier-based cyclone recovery activated sludge enhancement system according to claim 8, characterized in that: Both ends of the actuating roller are connected to the guide roller or one of the directional rollers via belt sets.

10. The enhancement method for the carrier-based cyclone recovery activated sludge enhancement system as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Introduce wastewater containing added bacteria into the treatment tank to increase the attachment area of ​​microorganisms. The treatment tank includes an anaerobic tank, an anoxic tank, and an aerobic tank. In the anaerobic tank, the dissolved oxygen concentration in the tank is kept below 0.2 mg / L by controlling the aeration rate, so as to decompose organic matter and break down complex organic matter into simple organic or inorganic matter. In the anoxic tank, nitrate nitrogen in the wastewater is removed through denitrification, thereby reducing the total nitrogen concentration; In the aerobic tank, organic matter in the wastewater is removed, COD and BOD concentrations are reduced, and some ammonia nitrogen is removed. The ammonia nitrogen is converted into nitrate nitrogen through nitrification. A portion of the treated wastewater is also discharged into the anoxic tank through internal recirculation, where nitrate nitrogen is removed through denitrification. S2. The wastewater treated in the treatment tank is introduced into the secondary sedimentation tank for solid-liquid separation, and the supernatant after solid-liquid separation is directly discharged. S3. The sludge formed after solid-liquid separation in the secondary sedimentation tank is subjected to optimized separation treatment of heavy sludge, microorganisms and light sludge using optimized equipment. S4. A portion of the selected heavy sludge and microbial strains, as well as a portion of the sludge after solid-liquid separation in the secondary sedimentation tank, are circulated back into the treatment tank in an external reflux manner to improve the microbial community and sludge characteristics of the treatment tank. S5. A portion of the light sludge produced after separation by the optimized equipment is dewatered to form bacterial strains. The prepared bacterial strains are quantitatively added to the inlet of the treatment tank. The quantitative amount of bacterial strains added is adjusted according to the wastewater quality and quantity at the inlet of the treatment tank. The remaining light sludge is directly discharged to other dewatering equipment in the plant area for dewatering.

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