393 results about "Aeration system" patented technology

The invention provides an intelligent aeration system and a control method, and the system comprises a multi-parameter monitoring module which collects parameters such as water depth, pressure, temperature, dissolved oxygen, inlet water ammonia nitrogen, chemical oxygen demand, and mixed liquid suspended solid concentration in real time; the data analysis and preprocessing module adopts a sliding window algorithm to carry out data cleaning and anomaly detection; the oxygen supply demand prediction module establishes an oxygen demand prediction model based on machine learning, and combines theoretical calculation and deep learning prediction; the multi-target intelligent control module adopts a reinforcement learning algorithm, establishes a Markov decision process model, and optimizes the processing effect and energy consumption at the same time; the execution control module is used for accurately adjusting the rotating speed of a fan, the opening degree of a valve and the running state of an aerator; and the system collaborative optimization module realizes linkage control of the aeration system and the carbon source adding system. The system has the functions of self-adaptive parameter adjustment, fault diagnosis and self-recovery, the DO control precision reaches 95% or above, the daily average electricity is saved by 9.7%, the NH4-N of effluent is reduced by 25%, and the annual comprehensive benefit exceeds 500,000 yuan.

The invention discloses a gradient optimization control method for an aeration system of a sewage plant. The gradient optimization control method comprises the following steps: S1, acquiring key monitoring multi-source data of the aeration system of the sewage plant in real time through an online sensor; s2, setting a security threshold value of each monitoring data to form a security constraint condition; s3, taking unit nitrogen removal energy consumption minimization as an optimization target, and constructing a comprehensive loss function fusing an energy consumption item and a water quality deviation item; s4, iteratively updating the air volume of the aeration system by adopting a self-adaptive gradient algorithm; s5, the optimized and updated air volume is issued to the aeration equipment to be executed, and water quality data and energy consumption data after execution are collected in real time, a control effect is calculated, an award signal is generated, and the award signal serves as feedback to be input into an optimization module; and S6, dynamically adjusting key parameters including the learning rate and the gradient threshold according to a feedback result. According to the invention, the energy consumption can be effectively reduced and the control precision can be improved while ensuring that the effluent stably reaches the standard, and the stable operation of the aeration system of the sewage plant under a complex working condition is ensured.

The invention provides a sewage treatment aeration control method and system based on a deviation compensation hybrid model, and relates to the technical field of intelligent optimization control of a sewage treatment process, a mechanism model driving layer in the hybrid model outputs a benchmark predicted value of effluent quality, and a process deviation compensation layer performs uncertain quantitative estimation on the benchmark predicted value, so that an aeration control result is obtained. Performing process deviation compensation on the reference predicted value; establishing an aeration optimization objective function by taking the minimum aeration rate as an optimization objective, solving to obtain the optimal aeration rate, outputting a control signal to an air blower according to the optimal aeration rate so as to adjust the rotating speed of the air blower or the opening degree of a valve, change the air supply rate to a reaction tank, and simultaneously, collecting inlet water quality data and operation parameters of an aeration system in real time; and updating the optimal aeration rate, and updating the control signal to form a feedback closed loop. Highly intelligent, stable, reliable, energy-saving and efficient aeration control can be realized, and the sewage treatment plant is ensured to stably realize that the effluent quality reaches the standard and the energy consumption is reduced to the greatest extent under complex working conditions.

The invention belongs to the technical field of sewage treatment, and provides a landfill leachate treatment method and system.The landfill leachate treatment method comprises the steps that water quality data of sewage is obtained in real time and analyzed to obtain an analysis treatment signal, a change duration value is obtained through analysis based on the water quality data of the sewage, and whether sewage treatment needs to be regulated or controlled is judged; the method comprises the following steps: acquiring aeration data of an aeration system, analyzing in combination with water quality data to obtain an influence value, judging whether the change of the aeration system can cause the change of the content of dissolved oxygen, acquiring an aeration regulation and control coefficient, and regulating and controlling sewage treatment based on the aeration regulation and control coefficient. On the other hand, the sewage treatment abnormity can be monitored in time, the sewage treatment quality can be improved, and on the other hand, the influence reasons of the sewage treatment abnormity can be found accurately in time, and regulation and control can be carried out in time.

The invention discloses a multi-mode perception unmanned operation platform for river and lake water quality improvement and an intelligent decision-making method, and the platform comprises an intelligent control center, and an autonomous navigation system, a multi-parameter water quality detection system, a dual-mode aeration system and an intelligent medicament decision-making system which are connected with the intelligent control center. Autonomous navigation operation of a complex water area is achieved through the autonomous navigation system, the multi-parameter water quality detection system provides a multi-mode sensing sensor array, comprehensive water quality parameter detection can be conducted on the water areas of rivers and lakes, and the dual-mode aeration system conducts aeration according to dissolved oxygen parameters. A working mode instruction intelligently judged by the intelligent control center is executed, aeration treatment is conducted, the intelligent medicament decision-making system dynamically calculates the medicament adding amount according to the water quality parameters, and accurate adding is achieved. According to the system, efficient integrated collaborative operation of autonomous navigation operation, full-dimensional water quality parameter real-time monitoring, dual-mode precise aeration and an on-demand dosing mechanism is realized, and the effect and efficiency of river and lake water quality improvement can be effectively improved.

The invention relates to an intelligent aeration system and a control method, and belongs to the technical field of sewage treatment. The system comprises a clean water tank, an aeration tank, a data acquisition unit, a PLC control unit and an aeration unit. The system dynamically calculates the required DO set value by collecting the inlet water chemical oxygen demand, the clear water ammonia nitrogen concentration, the sludge concentration and the sewage temperature of sewage in real time, calculates the difference value between the actual DO value and the required DO set value, calculates the aeration amount needing to be adjusted, and finally adjusts the blast volume through the aeration unit. The problems that a traditional aeration system is high in energy consumption and low in control precision are solved, insufficient aeration or excessive aeration can be effectively avoided, and stable effluent quality is guaranteed.

The invention discloses a multi-stage coupling jet enhanced shear mixing aeration system and an application method thereof. The aeration system comprises an air inlet section, a liquid inlet section, a bubble generator connected to the common downstream of the air inlet section and the liquid inlet section, and a regulating valve and an aeration tank which are sequentially connected to the downstream of the bubble generator, the bubble generator sequentially comprises a gas-liquid mixing unit, a rotational flow shearing unit, a turbulence strengthening unit and an oscillation self-excitation unit from upstream to downstream; according to the invention, negative pressure air suction, vortex shearing, hydrodynamic cavitation effect and the like are integrated in a device without a moving part; the gas-liquid mixture is crushed into nanoscale bubbles at the tail end turbulence section; the method has the remarkable advantages of lower energy consumption, higher bubble nucleation rate, smaller particle size and more uniform distribution. In addition, due to the unique multi-flow-field coupling design, adaptability to different water qualities is higher, and stable and efficient nanobubble generation capacity can be kept under wider working conditions.

The invention belongs to the technical field of sewage treatment, and particularly relates to an oxygen gradient self-coupling granular sludge partition reactor which comprises a reactor body, the reactor body is of a vertically-arranged tower structure, and an aeration system, a water distribution system, a partition assembly, a three-phase separator, a gas collection assembly, a water outlet assembly and a sludge discharge port are arranged in the reactor body. Wherein at least one layer of separation assembly is arranged, and the separation assembly divides an inner cavity of the reactor body into a first reaction function area and a second reaction function area which are connected in series up and down; the separation assembly comprises PET geotechnical cloth, and grating supporting plates are arranged on the upper side and the lower side of the PET geotechnical cloth. The functions of aeration, reaction, separation, water outlet and the like are integrated through a vertical tower type structure, high efficiency and energy conservation in the sewage treatment process are achieved, nitrification and denitrification reactions are synchronously completed in a single reactor by utilizing an oxygen gradient self-coupling mechanism in aerobic granular sludge, a traditional nitrification liquid internal reflux and sludge reflux system is not needed, and the cost is reduced. And the energy consumption and the operation cost are obviously reduced.

The invention discloses a motor system energy-saving optimization automatic control system based on industrial Internet of Things, which relates to the technical field of automatic control, and comprises a data acquisition module, a load decoupling module, an aerobic prediction module, a biochemical load disturbance index calculation module and a control module, the system comprises an operating parameter prediction module, a disturbance index prediction module, a decision optimization module, a model correction module and an oxygen demand prediction module, wherein the operating parameter and the disturbance index are combined to predict an optimal dissolved oxygen set value; the decision optimization module generates an optimal motor rotating speed control instruction according to the disturbance index and the set value; and the model correction module calculates a deviation factor according to the set value and real-time concentration and performs online correction when a threshold value is exceeded. Through cooperation of multiple modules, accurate, energy-saving and self-adaptive regulation and control of the aeration process are realized, loads can be accurately distinguished, the treatment effect and energy consumption can be balanced, long-term stable operation is guaranteed, and the energy consumption of the system is remarkably reduced.

The utility model discloses an aeration membrane tube and a hoisting type aeration system. The aeration membrane tube comprises an air inlet joint, a supporting tube and a porous membrane tube, the supporting pipe is connected with the air inlet connector, the supporting pipe and the air inlet connector form an air distribution chamber, the air distribution chamber is separated from an inner cavity of the supporting pipe, and an opening for communicating the inner cavity of the supporting pipe with the outside is formed in the tail end, away from the air inlet connector, of the supporting pipe. The porous membrane tube is sleeved outside the supporting tube, at least one end of the porous membrane tube is annularly fixed through a clamp, a gap between the porous membrane tube and the side wall of the supporting tube forms an inflation space, and an air inlet communicated with the inflation space is formed in the side wall of the air distribution chamber. The buoyancy of the air cavity during aeration is counteracted by utilizing gravity, the aeration membrane tube does not need to be fixed by adopting a fixing bracket, the mounting process is simplified, the cost is reduced, the aeration membrane tube is hoisted and fixed, the relative levelness of the aeration membrane tube can be controlled at the top of the tank, the same aeration water depth and aeration uniformity are ensured, and the aeration efficiency is improved. And the aeration system can be mounted and overhauled outside the tank body.

The present application relates to the field of sewage purification, and discloses a household micro sewage treatment system and a sewage treatment method, which comprises the following steps: building a septic tank; preparing a household micro sewage treatment system, an aeration system and suspended filler for microbial attachment; pumping clarified liquid by a lifting pump, and the clarified liquid enters a contact oxidation zone, and microorganisms degrade COD and BOD in the clarified liquid; the clarified liquid at the contact oxidation zone flows into an electrocoagulation zone, and electrocatalytic flocculation is performed; then, pollutants and phosphorus in the clarified liquid are filtered by a filtering zone, and the clarified liquid forms purified water; the purified water is taken from a water outlet zone, and is used for crop irrigation; or, a landscape zone for breeding aquatic plants or plankton is arranged at the water outlet zone. In the present application, the contact oxidation zone, the electrocoagulation zone, the filtering zone and the water outlet zone are sequentially and continuously arranged from bottom to top, and the arrangement structure of the whole household micro sewage treatment system is compact, and it is more convenient to arrange the system in a separate house environment in rural areas.

The utility model relates to the technical field of sewage treatment, and particularly discloses an anti-blocking aeration backwashing device, a cleaning system and an artificial wetland substrate backwashing system, which adopt airflow backwashing to replace water flow washing, and utilize the characteristic that bubbles naturally float in water to take away obstructions in gaps of a substrate layer, so as to achieve the purpose of preventing blockage. Meanwhile, each layer of the matrix is also protected from being dispersed and mixed; blockage in the aeration device is prevented through a gravity self-sealing air guide structure, and long-term maintenance is facilitated; each filter layer of the constructed wetland is cleaned through the aeration devices which are distributed in an array manner, so that the cleaning efficiency is high, and the substrate layer of the constructed wetland system is effectively prevented from being blocked; an aeration system and a backwashing system are combined into a whole, and backwashing is carried out while aeration is carried out, so that the construction cost and the operation cost are saved, and the system is suitable for popularization and promotion.

The invention discloses an intelligent interactive garden landscape piezoelectric photocatalytic water purification device which is based on a light-electricity-gas collaborative purification mechanism and intelligent energy regulation and control. Light energy is converted into electric energy through a solar cell module, and mechanical energy is converted into electric energy through a pressure induction power generation floor; the LED light source is driven to activate electron transition of the piezoelectric photocatalytic material, and hydroxyl radicals are generated to efficiently degrade pollutants; meanwhile, water flow mechanical energy excites a piezoelectric effect to form an auxiliary electric field, an aeration system is superposed to supply oxygen to enhance oxidation reaction, and multi-path synergistic decomposition of pollutants is achieved. The interaction system interacts with a user through an infrared sensor and a pressure sensing power generation floor, and an intelligent controller dynamically adjusts the light source intensity, the aeration frequency and the water flow circulation, so that the purification efficiency is ensured; and an integrated circulating system of solar energy supply, intelligent regulation and control, collaborative purification and ecological recycling is formed, and finally the target of water resource regeneration and scientific and ecological integration is achieved.

The invention discloses an efficient three-grid septic tank treatment device based on partial nitrosation and a feces treatment method. The treatment device comprises a stabilizing chamber, an anaerobic chamber, a partial nitrosation chamber and a settling chamber which are sequentially connected, a feeding pipeline is arranged at the upper part of the stabilizing chamber, a septic tank cover plate is arranged at a top opening, a preformed hole is formed in the septic tank cover plate, and the stabilizing chamber is communicated with the anaerobic chamber through a middle pipeline passage; a fixed polyurethane sponge filler is arranged in the anaerobic chamber, another septic tank cover plate is arranged at a top opening, and the upper part of the anaerobic chamber is communicated with the partial nitrosation chamber through a pipeline passage; another septic tank cover plate is arranged at the top of the partial nitrosation chamber, an aeration system is arranged in the septic tank cover plate, and a movable spherical filler is filled in the septic tank cover plate; the bottom of the partial nitrosation chamber is communicated with the settling chamber through a middle passage; a sediment sludge storage hopper is arranged at the bottom of the sediment chamber; a liquid outlet is formed in the upper part of the sediment chamber. The treatment efficiency and the manure utilization rate are remarkably improved, and the hydraulic retention time is shortened.

The invention discloses an energy-saving and consumption-reducing method for a sewage treatment plant based on four-level diagnosis and three-level optimization, and aims to solve the problems of high energy consumption and high medicine consumption in the existing sewage treatment technology. According to the method, data such as water quality, water quantity and energy consumption in 3-5 years are collected through a five-level technology cooperation system of historical data quantitative diagnosis, equipment energy efficiency evaluation and updating, facility function detection and transformation, technological parameter simulation regulation and control and intelligent closed-loop control, and key indexes are checked to locate anomalies; evaluating and updating energy consumption equipment, and detecting and transforming a structure, a pipeline and an aeration system; technological parameters are optimized in combination with material / energy balance, simulation analysis and small-scale tests; a four-stage intelligent control system is built to realize closed-loop regulation and control; after application, the energy consumption and the chemical consumption are obviously reduced, and the sewage treatment cost is effectively reduced; meanwhile, it is guaranteed that the effluent quality stably reaches the standard, extra treatment cost and environmental protection risks caused by the fact that the water quality does not reach the standard are avoided, the operation economical efficiency and environmental protection benefits of a sewage treatment plant are comprehensively improved, and sustainable development of the industry is promoted.

The invention relates to the technical field of sewage treatment, in particular to an aeration process quantitative evaluation method and system based on a multi-region mass transfer model. The aeration process quantitative evaluation method based on the multi-region mass transfer model comprises the following steps: S1, based on a physical structure and an operation mechanism of an aeration system, dividing the total volume involved in the aeration process into at least two physical regions with independent mass transfer characteristics in space; s2, determining key physical parameters of the oxygen mass transfer process based on the physical region, wherein the key physical parameters comprise equilibrium dissolved oxygen concentration; s3, calculating the oxygen transfer rate of the corresponding physical area based on the key physical parameters; s4, arithmetic addition is conducted on the oxygen transfer rates calculated in all the physical areas, the total oxygen transfer rate of the aeration system is obtained, the total oxygen transfer rate is the final quantitative evaluation result of the aeration process, and aeration can be accurately controlled through the total oxygen transfer rate.

The invention discloses a methyl ester wastewater treatment device in saccharin production, and relates to the technical field of wastewater treatment equipment. Comprising an adjusting cylinder, a coagulation cylinder, a biological reaction cylinder, two particle separators and a plurality of groups of delivery pumps. Waste water enters the adjusting cylinder after being subjected to primary impurity removal through the particle separator I, and the PH of the waste water is adjusted through cooperation of the circulating stirring structure and the acid-base property adjusting mechanism; the wastewater is subjected to secondary impurity removal through a second particle separator and then enters a coagulation cylinder to be mixed with a flocculation agent to generate flocculate, and a turbidity detection sensor is matched with a liquid extraction branch pipe to screen qualified wastewater; qualified wastewater enters the biological reaction cylinder, deep degradation is realized through the MBR and the aeration system, and a floating ball drives a shaking frame and a vibrating inner plate to prevent membrane blockage; after flocculate is separated by the treatment box, wastewater is recycled and reused; the device is compact in structure and high in automation degree, can efficiently remove wastewater impurities and refractory pollutants, ensures that wastewater reaches the standard and is discharged, and meets the large-scale wastewater treatment requirement of saccharin production.

This invention belongs to the field of aquaculture equipment and discloses a recirculating aquaculture system for indoor multi-layered culture of freshwater fish germplasm samples. The system includes a stainless steel culture rack, glass culture tanks, a temperature control system, a recirculating water purification system, an aeration system, and electrical and auxiliary materials. Through a three-layered culture structure design, combined with culture tanks of varying sizes and a precise temperature control module, it solves the problem of aquaculture with diverse sizes of freshwater fish germplasm samples and large differences in suitable water temperatures. The system has nine small glass culture tanks in the upper layer and three large glass culture tanks in each of the middle and lower layers, equipped with an external temperature control component and an internal heating rod, achieving full-coverage water temperature regulation from 10℃ to above 30℃. The recirculating water system ensures stable water quality through the synergistic effect of a filter tank, a booster pump, an ultraviolet sterilizer, and various filter media. Meanwhile, the lower culture tanks are equipped with an internal circulation filter to enhance local water purification, meeting the diverse aquaculture needs from small fry to large broodstock.

This utility model belongs to the field of wastewater treatment technology, specifically an infrared electric heater for a precision aeration system. It includes a housing and a pull rod, which are rotatably coupled to the housing and slidably coupled to a baffle plate. A fixed sleeve, fitted over a quartz tube, is fixedly installed inside the baffle plate. A telescopic connecting sleeve is located at the front end of the fixed sleeve, with its fixed portion fixedly connected to the fixed sleeve. A pull plate, also fitted over the quartz tube, is fixedly connected to the front end of the movable portion of the connecting sleeve. Multiple centrally symmetrically distributed elastic clips are arranged inside the fixed sleeve, clamping the quartz tube and slidably engaging with the movable portion. When the movable portion moves backward, it compresses the elastic clips towards the center of the quartz tube. The pull rod and pull plate are threaded together, allowing control of the pull plate's displacement along the length of the quartz tube. This utility model can adjust the clamping force on the quartz tube to reduce equipment vibration and better accommodate deformation of the quartz tube under thermal stress.

The present application relates to the technical field of groundwater pollution remediation, and particularly relates to a method and device for in-situ remediation of hexavalent chromium contaminated groundwater, wherein the device comprises a multifunctional well group, a medicament supply system, an aeration system, a monitoring system and a control system; the multifunctional well group comprises a plurality of multifunctional wells; the medicament supply system is used for pretreating medicaments, modified composite reducing agents and composite functional bacteria liquid respectively; the control system is used for receiving monitoring data; the control system is also used for displaying monitoring data and equipment operating states, and setting operating parameters by a user; the control system is also used for automatically adjusting medicament dosing amount, aeration flow and aeration pressure according to monitoring data and operating parameters set by the user. Through the design of the multifunctional well group, the medicament supply system and the aeration system, the hexavalent chromium contaminated groundwater can be simultaneously subjected to chemical reduction, biological reinforcement and adsorption fixation, so that the three processes are coordinated to realize rapid, efficient and long-acting remediation of the hexavalent chromium contaminated groundwater.

The utility model discloses an in-situ regulation and control device for underground water pollutant conversion conditions, and belongs to the technical field of underground water in-situ remediation. The in-situ regulation and control device comprises a case, a top plate, a stirring rib, a suspension rope and an aeration system, a submersible motor is arranged in the case, and an output shaft of the submersible motor penetrates through the top surface of the case; the top plate is fixed to the top face of the machine box through a supporting rod and is parallel to the top face of the machine box. One end of the stirring rib is connected with an output shaft of the submersible motor, and the other end is rotationally connected with the top plate; the suspension rope is connected with the top plate; the aeration system comprises an air stone, an aeration pipe and a regulation and control air source, and the air stone is arranged on the top surface of the case and is communicated with the regulation and control air source through the aeration pipe. The stirring ribs are driven by the submersible motor to rotate, so that more regulation and control gas blown out of the bubble stone diffuses in the radial direction of the well casing, the diffusivity of the regulation and control gas to underground water is improved, and the in-situ regulation and control effect of underground water pollutant conversion conditions is enhanced.

The utility model relates to a novel biochemical treatment wastewater adjusting tank, which comprises an adjusting tank body, a sludge discharge system, a perforated aeration system, a steam heating system, a water outlet pipe and a water inlet pipe, the sludge discharge system comprises a sludge discharge pipe, a sludge discharge external pipeline and a sludge discharge pump, the sludge discharge pipe is connected with the sludge discharge pump through the sludge discharge external pipeline, and the perforated aeration system is connected with the sludge discharge pump through the sludge discharge external pipeline. The perforated aeration system comprises an aeration pipe, an aeration external pipeline and a fan, the aeration pipe is connected with the fan through the aeration external pipeline, the steam heating system comprises a steam pipe and a steam external pipeline, the steam pipe is externally connected with steam through the steam external pipeline, and the sludge discharge pipe, the aeration pipe and the steam pipe are sequentially arranged at the bottom of the adjusting tank body from bottom to top. The water inlet pipe is arranged at the top of the regulating tank body, and the water outlet pipe is arranged in the middle of the regulating tank body. According to the utility model, the sludge system, the perforated aeration system and the steam heating system are reasonably arranged, so that the impact when the water quality or the water quantity of the production wastewater is greatly fluctuated can be better dealt with, the operation stability of the system is ensured, the treatment efficiency is improved, and sludge impurities are better intercepted.

The present invention relates to a lifting and mixing aeration system which facilitates maintenance of an air diffuser and differential control in a tank, the lifting and mixing aeration system comprises: a support plate inserted into an aeration tank to be seated on a floor; an air generation unit including multiple air diffusers installed on an upper portion of the support plate, and multiple air nozzles formed in each of the air diffusers; and an elevation unit including multiple rings formed on an outer circumference of an upper surface of the support plate, a wire fastened to the rings and vertically disposed upward, a support formed on an upper portion of the aeration tank, and a winding motor in which a rotary shaft on which a sprocket and a pulley on which the wire is wound are formed is rotatably mounted on the support, the winding motor being mounted on the support and connected to the sprocket by a chain to rotate the rotary shaft to wind or unwind the wire to enable the elevation unit to be moved up and down.

The utility model provides an iron removal oxidation device with a heat exchange function. The iron removal oxidation device comprises a tank body, a stirring device is arranged in the tank body, an aeration system is further arranged in the tank body, a cooling jacket is arranged on the outer side of the tank body, a sedimentation system is arranged at the bottom of the tank body, and a solution online Fe < 3 + > detector is connected to the side wall of the tank body. By means of the accurate stirring system and the cooling jacket, it is ensured that ore dissolving liquid makes full contact with oxidizing gas, the optimal reaction temperature is maintained, and therefore oxidation of Fe < + > is accelerated. The microporous aeration disc enhances the contact area between gas and the ore dissolving liquid, and improves the oxidation rate. Meanwhile, the sedimentation system effectively accelerates the separation of sediments and reduces the interference of impurities. And through Fe < + > concentration monitoring and backflow adjustment, accurate control over the ore dissolving liquid is achieved, and the quality of a final product is guaranteed.

This invention discloses a device and method for rapid start-up and stable operation of IFAS-PN / A based on microfiltration membrane retention. The device includes a reactor body, an influent system, an effluent system, an aeration system, a heating system, an online monitoring system, and a stirring system. The reactor contains a biofilm carrier frame and a submerged MBR membrane module. The biofilm carrier frame is connected to a stirrer, and the MBR membrane module is connected to an effluent tank via an effluent peristaltic pump. During start-up, the anaerobic ammonia-oxidizing bacteria biofilm packing is fixed on the carrier frame and inoculated with activated sludge. The effluent is filtered through the microfiltration membrane, achieving complete retention of functional bacteria and precise control of sludge retention time. During operation, the peristaltic pump is started and stopped in conjunction with the influent and effluent level gauges to maintain a constant water level; precise adjustment of the target SRT is achieved through sludge discharge. This invention solves the problems of easy loss of functional bacteria, long start-up cycles, and poor operational stability, achieving efficient and stable denitrification of wastewater, with advantages of rapid start-up, stable operation, and precise control.

The application discloses a continuous ion exchange adsorption device for denitrification and a use method thereof. The device comprises an ion exchange column, which is provided with a resin inlet at the top and a water inlet and a resin outlet at the bottom; an aeration system, which comprises an aeration head arranged at the bottom area of the ion exchange column and an aerator for supplying air to the aeration head; and a water inlet and outlet system, which comprises a water inlet pump and a water inlet pipe in communication with the water inlet and at least one water outlet arranged on the side wall of the ion exchange column, and each water outlet is connected with a filter assembly for filtering resin. The adsorption device disclosed by the application can realize targeted removal of nitrate nitrogen by promoting the mixing process of resin and nitrogen-containing wastewater through reverse flow of nitrate anion resin and nitrogen-containing wastewater in the ion exchange column, has good treatment effect, is applicable to variable water quality and has low operation cost.

The invention relates to a device and a method for improving sewage biochemical treatment efficiency under PFAS stress, and belongs to the field of wastewater biological treatment. The device comprises an SBR reaction device, a magnetic stirrer, an aeration system and an ultrasonic generator, the SBR reaction device is provided with a water inlet and a water outlet, the water inlet is connected with a water inlet barrel through a peristaltic pump, and the water outlet is connected with a water outlet barrel through a water outlet valve; activated sludge is added into the SBR reaction device; a stirring rod of the magnetic stirrer is placed in the SBR reaction device; the aeration system comprises an aeration disc and an aeration device, and the aeration disc is located at the bottom in the SBR reaction device and connected with the aeration device; and an ultrasonic vibration rod of the ultrasonic generator is placed in the SBR reaction device. According to the device, the organic matter degradation efficiency under the PFASs stress can be improved. The method is simple and easy to operate, efficient treatment of organic matters can be realized, and the water quality standard of discharged water is improved.

The utility model relates to the technical field of fermentation, in particular to a straw micro-aerobic-anaerobic integrated biogas fermentation device. The device comprises a total fermentation box, a hot water circulation heating system and a lateral flow micro-aeration system, straw fermentation liquid is added into reaction chambers through a feeding port, high-solid hydrolysis acid production is performed in a first reaction chamber, and then anaerobic fermentation is performed in a second reaction chamber; the jacket provides heat for the reaction chamber, so that the straw fermentation liquid is fermented at a set temperature; marsh gas generated in the fermentation process is collected through a gas collecting hole; in the fermentation process, the reactor forms a good natural stirring effect through a side flow micro-aeration mechanism. The micro-aerobic-anaerobic integrated structure reduces the occupied area of the device, reduces the maintenance cost and improves the volume utilization rate.

The utility model discloses an aeration system of a sewage oxidation pond, which belongs to the technical field of sewage treatment and comprises an oxidation pond body, a vertical mounting frame is fixedly mounted on the side wall of the oxidation pond body, a lifting driving component is mounted on the inner wall of the vertical mounting frame, and a lifting connecting plate is mounted on the lifting driving component. The lifting connecting plate is attached to the inner wall of the oxidation pond body and inserted into the oxidation pond body, a bearing block is fixedly installed at the bottom of the lifting connecting plate, an aeration frame is placed on the bearing block and fixedly connected with the lifting connecting plate through a bolt connecting assembly, and an aeration pipe is fixedly installed on the inner wall of the aeration frame; the aeration frame and the aeration pipe can be conveniently maintained and cleaned, the convenience of replacement and maintenance is greatly improved, meanwhile, the aeration pipe can be accurately located at the proper depth of sewage, oxygen is better supplied to microorganisms, pollutant decomposition is efficiently promoted, and the sewage purification effect is improved.

The invention relates to the field of industrial wastewater treatment, in particular to an aeration method of an aerobic tank in industrial wastewater treatment. The air filter is additionally arranged in front of an air inlet pipeline of the frequency conversion fan, impurities such as oil drops and dust in the air filter are removed, the filtering and purifying effects are achieved, the gas pipeline mixer is additionally arranged, the oxygen pipeline is additionally arranged on the gas pipeline mixer, and the purpose of achieving the oxygen content of the aeration system through valve adjustment is achieved; and a dissolved oxygen tester is arranged at an inlet and an outlet of the aerobic tank and is connected with a control system. The air filter is additionally arranged to remove flammable and explosive media, the oxygen content is monitored on line and automatically controlled, safety and reliability are achieved, stable operation of the system is guaranteed, the oxygen pipeline is additionally arranged on the newly-arranged gas pipeline mixer, air and oxygen are fully mixed, the oxygen utilization efficiency is improved, and the oxygen utilization rate is increased while the oxygen requirement of biochemical reaction is met. The energy consumption of the fan is reduced, and the operation cost is saved.