499 results about "Aeration system" patented technology

The invention relates to the technical field of sewage treatment, in particular to a dissolved oxygen control method and system applied to an aeration system, and the method comprises the following steps: based on a preset data acquisition frequency, obtaining water quality parameter information of inlet water and the inside of an aeration tank, and arranging at least two groups of water quality parameter information according to a time sequence to obtain a time sequence water quality characteristic set; performing dynamic aerobic evaluation on the time sequence water quality characteristic set to obtain a dynamic dissolved oxygen range; dividing a plurality of time windows according to the initial sewage treatment regulation and control instruction, and determining a target dissolved oxygen range and an aeration energy consumption constraint in each time window; calculating a dissolved oxygen real-time gap between the dynamic dissolved oxygen range and a target dissolved oxygen range in the corresponding time window; carrying out constraint coupling analysis on the dissolved oxygen real-time notch and the aeration energy consumption to obtain real-time aeration control parameters, and adjusting an aeration system according to the real-time aeration control parameters; the problem of underexposure or overexposure caused by lagging adjustment can be avoided, and meanwhile energy waste caused by frequent overshoot is reduced.

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.

This disclosure includes systems and methods for optimizing aeration in wastewater treatment. The techniques described herein include receiving data for a wastewater treatment plant, the data being descriptive of water quality over a period of time. The techniques further include developing a predictive model for future water quality based on the received data. The techniques also include determining, based on the predictive model, a plurality of DO setpoints and airflow rates for the wastewater treatment plant. The techniques further include controlling an aeration system for the wastewater treatment plant using the plurality of DO setpoints and the airflow rates.

The embodiment of the invention relates to electrochemical enhanced biological integrated intelligent regulation and control equipment for treating organic wastewater. The electrochemical enhanced biological integrated intelligent regulation and control equipment comprises an electrochemical enhanced biodegradation module and an intelligent control system, the electrochemical enhanced biodegradation module comprises a porous membrane electrode assembly, a power supply control system, an electrolyte adding system, a fixed bed biological membrane, an aeration system and a carbon source adding system; the intelligent control system comprises a data acquisition and remote monitoring module and a PLC (Programmable Logic Controller); the data acquisition and remote monitoring module acquires parameters such as COD (Chemical Oxygen Demand), dissolved oxygen concentration, ammonia nitrogen, total nitrogen and conductivity of the electrochemical enhanced biodegradation module and transmits the parameters to the PLC; and the PLC receives the parameters, and automatically adjusts one or more of voltage, current density, aeration rate and carbon source dosage based on a preset model established by a support vector regression and neural network machine learning algorithm. The intelligent regulation and control equipment can keep an optimal treatment state under different wastewater characteristics and load conditions, and has strong adaptability to environment or load fluctuation.

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 micropore bubbling aeration two-stage oscillation modulation synergistic system and an application method thereof. The modulation synergistic system comprises a two-stage oscillation device, an air supply unit connected to the upstream of the two-stage oscillation device, and a micropore coil pipe and an aeration tank which are connected to the downstream of the two-stage oscillation device. The two-stage oscillation device comprises a non-feedback oscillation cavity connected with the branch section, a sound wave oscillation cavity sequentially connected with the air inlet section, and a cavity connecting section connected with the non-feedback oscillation cavity and the sound wave oscillation cavity in parallel. Controlled pulsating oscillation airflow is injected into the microporous aeration system through the two-stage oscillation device, and periodic inertia force disturbance is introduced in the bubble generation stage; the pulsating pressure field breaks through gas-liquid interface force balance under traditional steady-state airflow, so that the bubble separation critical size is remarkably reduced, hole opening air film oscillation is accelerated through high-frequency pressure oscillation, necking fracture is promoted, and the bubble separation size is reduced; and meanwhile, transient shear force generated by the pulsating airflow inhibits interaction of adjacent bubble wake flows, and the coalescence probability is reduced.

The invention discloses a double-layer aeration system for preventing wire breakage and sludge deposition of an MBR double-layer component membrane pool, which comprises a raw water pool, a raw water inlet peristaltic pump, an MBR double-layer component membrane pool, a perforated aeration pipe, a pulse aeration box, an aeration pump, a gas meter, a water outlet gear pump, an ultrafiltration membrane component, a pressure sensor, a transmembrane pressure difference display, a sludge discharge peristaltic pump and a water outlet pool, the MBR double-layer assembly membrane pool comprises a first MBR membrane assembly and a second MBR membrane assembly, the first MBR membrane assembly and the second MBR membrane assembly are arranged in parallel, and the perforated aeration pipe and the pulse aeration box are configured to be used as aeration assemblies of the first MBR membrane assembly and the second MBR membrane assembly. According to the invention, the membrane is physically scrubbed by utilizing different aeration modes and a double-layer aeration mode, so that the phenomena of membrane pollution, sludge accumulation and wire breakage are effectively relieved, a reliable theoretical basis is provided for transforming an MBR membrane tank into a double-layer aeration mode in a water purification plant using the MBR hollow fiber membrane, and meanwhile, the method has important significance on reducing pollution and carbon.

The multi-mode switching sewage treatment system provided by the invention comprises a primary sedimentation tank, a biological tank and a secondary sedimentation tank, and the biological tank comprises a tank body, a partition wall, a gate, a filler, a stirrer, an aeration system, a nitrification liquid reflux pump, a pipeline and a valve system; the tank body forms a biological reaction tank; the biological reaction tank is divided into a pre-anoxic zone, an anaerobic zone, an anoxic zone and an aerobic zone by the partition walls; the gate is arranged on the partition wall, the water flow direction of the sewage treatment system is switched and adjusted through opening and closing of the gate, and the nitrification liquid reflux pump adjusts the quality of reflux liquid through opening and closing of the gate so as to be switched to different modes of multiple modes of the sewage treatment system; the pipeline and valve system performs flow control on sewage, sludge and air, and different modes of multiple modes are switched by opening and closing the gate and adjusting the position of the filler. According to the invention, the switching of the sewage treatment system in different modes under different conditions is realized.

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.

There is provided an oxygenation assembly submersible within a body of water. The oxygenation assembly includes a mass transfer vessel configured to receive water and promote dissolving of oxygen therewithin at least in part using pressure from the body of water. The vessel is elongate and may have a fixed diameter. The oxygenation assembly includes a bubble generator downstream of the vessel and which functions as a throttling device. The bubble generator is configured to dissipate pressure within the vessel in a manner that promotes breaking up of remaining undissolved gaseous bubbles. The oxygenation assembly may include an aeration system coupled to and in this example in line with the vessel. The aeration system disperses water of elevated dissolved oxygen content throughout a larger volume of water having a lower bulk dissolved oxygen concentration.

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.

There is provided an aquaculture assembly for generating compressed air and concentrated oxygen. The assembly includes an aeration system. The assembly includes an oxygen concentrator. The assembly includes a compressor operatively connected to both the aeration system and the oxygen concentrator. The compressor selectively directs compressed air to the aeration system, the oxygen concentrator or both the aeration system and the oxygen concentrator. The assembly may include a variable speed engine directly coupled to the compressor. There is also provided oxygen generation system with a fluid-air heat exchanger configured to receive therethrough and cool compressed air. A filtration unit, downstream of the fluid-air exchanger, removes liquid from the compressed air so cooled. An oxygen concentrator, downstream of the filtration unit, includes one or more vessels via which the compressed air is selectively received. Each said vessel includes an adsorbent and a desiccant therewithin.

The invention relates to the technical field of sewage treatment and aquaculture, in particular to a dissolved oxygen concentration control method applied to an aeration oxygenation system.The method comprises the steps that dissolved oxygen data of a target area are periodically obtained, a first dissolved oxygen concentration difference is calculated, and when the first dissolved oxygen concentration difference is larger than or equal to a preset dissolved oxygen concentration difference threshold value, the first dissolved oxygen concentration difference is determined; starting an aeration control system, increasing the aeration amount to the target area, and setting a dissolved oxygen concentration standard value and a second dissolved oxygen concentration difference after a preset time to obtain an aeration standard amount; the aeration control system controls the output of the aeration equipment, performs aeration system detection once at a preset second time interval, and judges whether aeration is effective or not; and when the third dissolved oxygen concentration difference is smaller than a preset dissolved oxygen concentration difference threshold value, water temperature adjustment is executed, and the water body temperature of the target area is adjusted to the target temperature. According to the invention, the concentration of dissolved oxygen in the water body can be maintained in a set optimal range.

The preparation method comprises the following steps: mixing corncobs, a carbon source, rice husks, a nitrogen source and a conditioner, and adjusting the initial moisture content of the mixture to 55-65% so that the C / N ratio reaches (25-30): 1 to obtain a pile body; covering the surface of the pile body with a nano microporous membrane, starting an aeration system in a high-temperature stage, adjusting the air pressure difference inside and outside the membrane to 50-100Pa in a cooling stage, and continuously fermenting; after 7-10 days of fermentation, when the pH value of the base material is stable and the total nutrient meets the requirement, the fermentation is completed, the base material is bagged and sterilized, and the tricholoma matsutake cultivation base material is obtained. According to the method, the fermentation period is shortened to 1 / 3-1 / 2 of that of a traditional method, and the production efficiency is improved. In addition, the infectious microbe contamination rate of the base material is reduced, the purity and quality of the base material are improved, and a healthier environment is provided for growth of tricholoma matsutake. And the yield of tricholoma matsutake is increased by 40%. Not only is the yield of tricholoma matsutake increased, but also the nutritional value of tricholoma matsutake is improved, and higher economic benefits are brought to farmers.

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 invention relates to the technical field of underground water treatment, in particular to a heat conduction reinforced in-situ aeration system for treating underground water pollution, which comprises a hot water circulation and hot steam generation system, a heat conduction pipe and an aeration well, the system comprises an underground cavity used for containing water, a chemical adding system used for injecting chemicals into the water-containing layer, and an extraction system used for extracting gas in the underground cavity and purifying the gas, and hot steam is injected into the pollution plume, so that the temperature around the pollution plume is increased, pollutant diffusion and the gas-liquid mass transfer rate are increased, the remediation range is expanded, and the air disturbance (AS) remediation efficiency is improved. The hot steam also forms an airflow barrier on the outer side of the pollution plume to separate the pollution plume from the outside, so that the migration and diffusion of pollutants are avoided; and hot water is introduced into the heat conducting pipe, so that the temperature of underground water is increased, the volatilization efficiency is improved, and the utilization rate of heated water is improved.

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 invention provides an aquaculture intelligent oxygenation system and method based on the Internet of Things, and the system comprises an oxygenation pipeline device, the oxygenation pipeline device comprises a first sensor assembly and an actuator assembly, the first sensor assembly forms a monitoring module used for collecting key parameters of gas in an oxygenation pipeline in real time, and the actuator assembly forms an actuator assembly; the monitoring module further comprises a second sensor assembly used for collecting key parameters of the water body, the first sensor assembly, the actuator assembly and the second sensor assembly are all connected with an Internet of Things controller, and the Internet of Things controller is further connected with a terminal module through a cloud platform. The beneficial effects of the invention are that the system combines the functions of Internet of Things control, edge calculation, real-time detection and intelligent adjustment, achieves the precise control of the dissolved oxygen in the aquaculture process, and guarantees the stability of the aquaculture environment; and through intelligent management, the operation efficiency of the oxygenation equipment is improved, the energy consumption is reduced, and the healthy environment of the water body is ensured.

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 a defoaming device and an aeration system, the defoaming device comprises at least one demister, the demister is provided with a plurality of thorn bodies for eliminating bubbles, and the plurality of thorn bodies are uniformly distributed on the demister; the demister is erected on the mounting frame and can rotate relative to the mounting frame; and the driving mechanism is connected with the demister and can drive the demister to rotate in a reciprocating manner. The invention discloses a defoaming device and an aeration system. The defoaming device and the aeration system are used for solving the problem that the elimination effect provided by the existing defoaming device is not ideal.

The invention discloses an iron powder-pyrite coupled algal-bacterial symbiosis sewage treatment device and method.The iron powder-pyrite coupled algal-bacterial symbiosis sewage treatment device comprises an algal-bacterial symbiosis reactor body, an iron powder-pyrite assembly, a water inlet pump, an aeration system and a PLC control system; an inclined plate settling zone, a sludge settling zone and a reactor water outlet are arranged at the top, conversion of organic matters and ammonia nitrogen is realized through photosynthetic oxygen production, effluent from the top of the algal-bacterial symbiotic reactor is pumped into an iron powder-pyrite assembly by an external circulating pump, nitrate is reduced into nitrogen through sulfur autotrophic denitrifying bacteria, and phosphorus is removed through iron flocculent precipitation. The invention has the following beneficial effects: the algal-bacterial symbiotic system can utilize light energy to carry out photosynthesis, does not need a large amount of aeration, and reduces aeration energy consumption; the iron powder is combined with a sulfur autotrophic denitrification system, so that the long-term operation performance of pyrite autotrophic denitrification can be effectively improved, nitrogen and phosphorus removal is enhanced, and generation of sulfate radicals is reduced.

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.

An aeration system for a wastewater treatment tank, comprising a driving mechanism (1), which drives a downwardly-extending main shaft (2), wherein the main shaft (2) is divided into an upper section and a lower section, the upper section and the lower section respectively being provided with an upper spiral blade (31) and a lower spiral blade (32) which rotate in opposite clockwise directions; the outside of the main shaft (2) is further surrounded by a sleeve (4) coaxial with the main shaft (2), an upper spiral channel and a lower spiral channel respectively being formed between the inner wall of the sleeve (4) and the upper and lower spiral blades (31, 32); the sleeve (4) is fixed relative to a housing of the driving mechanism (1), and the upper end of the sleeve (4) is provided with an air inlet (40); the inside of the sleeve (4) is provided with a sealing plate (5) located between the upper and lower spiral blades (31, 32), the sealing plate (5) being provided with jet holes (50) in the axial direction of the main shaft (2); and below the sealing plate (5), the sleeve (4) is in lateral communication with two or more diffusion tubes (6), said diffusion tubes (6) being circumferentially uniformly distributed around the main shaft (2). The system can force air and wastewater to mix, and thus has a higher oxygen dissolution efficiency.

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.