2506results about "Treatment using aerobic processes" patented technology

The invention discloses an intelligent regulation and control method and system for sewage treatment and a program product, and relates to the technical field of sewage treatment.The method comprises the steps that a multi-modal water quality sensing network is constructed, and sewage quality parameter information and overall treatment target numerical value information are obtained; according to the equipment operation state and the overall treatment target numerical value information, sewage treatment process parameters are generated, and treatment units in the sewage treatment system are distributed in a plurality of areas; triggering a process regulation and control instruction according to the sewage treatment process parameters and the overall treatment target numerical value information; obtaining partition processing effect detection information, and comparing the partition processing effect detection information with the corresponding index value to obtain a partition difference value; if the partition difference value exceeds a preset change threshold range, triggering a partition self-adaptive regulation and control updating instruction; obtaining partition adjustment parameter information according to the partition self-adaptive regulation and control updating instruction; and triggering an adjustment instruction. The invention provides an intelligent regulation and control method based on multi-dimensional perception and adaptive decision.

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment control process based on dynamic regulation and control of aeration and carbon source addition, which comprises the following steps: acquiring microbial metabolism heat change data in real time; biochemical treatment: monitoring the dielectric constant of a water body and the Reynolds number of sewage flow in real time, and constructing a multi-parameter coupling regulation and control model and dynamically regulating and controlling the aeration rate in combination with microbial metabolism heat change data obtained in the pretreatment step; accurately adding the carbon source according to a calculation result of the carbon source demand prediction model; sewage subjected to biochemical treatment is subjected to ultrafiltration through a nanofiber membrane and then subjected to combined disinfection treatment through ultraviolet rays and ozone, treatment parameters are regulated and controlled in real time according to the membrane flux attenuation trend in the treatment process, and dynamic and accurate control over sewage treatment is achieved. According to the method, the problem of energy consumption waste caused by excessive aeration or low degradation efficiency caused by insufficient aeration in a traditional process is solved, and accurate matching of dissolved oxygen supply and microbial requirements is realized.

The invention relates to the technical field of river and lake landscape water system purification, and discloses a river and lake landscape water system composite purification system, which comprises a water quality parameter acquisition module, an ecological analysis module, a microbiological treatment module, a multi-stage collaborative purification module, a purification parameter generation module, an authority association module and a dynamic regulation and control module. The water quality parameter acquisition module acquires data in multiple dimensions to quantify the pollution level and trigger a purification instruction; the ecological analysis module evaluates the ecological self-purification capability, and the microbiological treatment module predicts the degradation efficiency; the multi-stage collaborative purification module generates a regulation and control signal in combination with the evaluation value; the purification parameter generation module generates repair and activation parameters accordingly; the permission association module monitors the emission permission of the pollution source; and the dynamic regulation and control module forms a closed-loop purification process. According to the system, through multi-module cooperation and closed-loop regulation and control, accurate recognition of river and lake landscape water system pollution, ecological self-purification capability activation and microbial degradation enhancement are achieved, and the purification efficiency and ecological restoration long-term effect are improved.

The invention discloses a shallow lake water quality pollution treatment system and method, and relates to the technical field of water pollution, and the method comprises the steps: S1, building a disturbance intensity index DIX and ammonia nitrogen concentration change curve, achieving the quantitative recognition of bottom mud disturbance and pollution release behaviors, training a rebound risk prediction model according to the quantitative recognition, and outputting a rebound risk prediction coefficient Ft; and the capability of pre-judging the rebound trend of the ammonia nitrogen pollution is effectively improved. In the step S2, the adjusted aeration response frequency BAF is dynamically generated based on the rebound risk prediction coefficient Ft value, so that the aeration behavior is converted into a risk-driven system from a traditional timing system, the energy consumption and disturbance intensity are further reduced, and the treatment efficiency is improved. And S3, further introducing a governance residual coefficient GRC, constructing a complete feedback closed loop, and realizing accurate evaluation and secondary strategy optimization of the governance effect of each round, thereby avoiding the problem of effect back-off or excessive disturbance after governance.

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 provides a bioreactor aeration self-adaptive control method and system based on machine learning, and the method comprises the steps: collecting the water inlet flow, ammonia nitrogen concentration, dissolved oxygen concentration, water temperature and chemical oxygen demand data of a bioreactor in real time through a sensor, and carrying out the water balance verification and the Kalman filtering pretreatment containing a water temperature compensation item; generating an aeration instruction by adopting multi-model collaboration; outputting a reference aeration rate by a deep reinforcement learning DRL model; the self-adaptive PID controller dynamically adjusts the proportionality coefficient according to the dissolved oxygen deviation and calculates the correction amount; and the LSTM network generates a fusion weight, and combines the seasonal compensation factor and the safety coefficient to synthesize the final aeration rate. The system passes mutation rate constraint and nitrification efficiency verification, an ASM1 model is triggered to recheck when the deviation exceeds the standard, and after passing, an air blower with the precision of + / -2% executes an instruction and performs closed-loop feedback in a period smaller than or equal to 10 seconds. After the method is implemented, the aeration energy consumption is reduced to 0.38 kWh / m, the effluent ammonia nitrogen standard reaching rate is improved to 98.5%, the dissolved oxygen fluctuation range is reduced to + / -0.3 mg / L, and the impact load response time is shortened to be within 15 minutes.

The invention discloses an integrated process for cooperative treatment and up-to-standard discharge of industrial wastewater and domestic wastewater of a power plant, and relates to the field of cooperative treatment of wastewater and sewage, and the integrated process comprises the following steps: configuring a raw water collection system, setting a raw water source, configuring a multi-stage filtration and heating pretreatment process, configuring an ultrafiltration membrane system, and setting a fine filtration path. A first-stage reverse osmosis system is configured, reverse osmosis parameters are set, a second-stage reverse osmosis system is configured, a low-conductivity water treatment path is set, a mixed ion exchanger is configured, a desalted water output path is set, a standby pool body is set, and the adjusting capacity is set. A raw water collecting system, a multi-stage filtering and heating pretreatment process, an ultrafiltration membrane system, a first-stage reverse osmosis system, a second-stage reverse osmosis system, a mixed ion exchanger and a standby pool body are sequentially arranged in the process. The problems of unstable effluent quality, insufficient deep desalination capability and poor emergency regulation capability in a traditional power plant wastewater treatment mode can be effectively solved.

The invention discloses integrated medical wastewater treatment equipment which comprises an aerator, and the aerator comprises an upper aeration disc, a middle aeration disc, a lower aeration disc, a spiral disc and an air inlet pipe which are sequentially connected and communicated from top to bottom; first aeration holes are formed in the top surface of the upper aeration disc, and second aeration holes are formed in the circumferential side surface of the upper aeration disc; a third aeration hole is formed in the top surface of the middle aeration disc, and a fourth aeration hole is formed in the circumferential side surface of the middle aeration disc; a fifth aeration hole is formed in the top surface of the lower aeration disc; the spiral disc is defined by an inner spiral surface, an outer spiral surface and an end surface, sixth aeration holes are formed in the outer spiral surface, seventh aeration holes are formed in the inner spiral surface, eighth aeration holes are formed in the joint of the inner spiral surface and the outer spiral surface, and the eighth aeration holes are distributed in the height direction. According to the equipment, bubbles generated by the aerators in the aerobic tank become finer, more balanced in distribution and larger in area.

The invention discloses an urban road rainwater runoff stage treatment system and method, and relates to the technical field of urban rainwater pollution treatment. In order to solve the problems that an existing system is difficult to monitor multi-index water quality in real time, the pollution degree is accurately recognized, and distribution control lacks dynamics, the system is provided with a multi-source spectrum water quality monitor at the tail end of a pipe network, turbidity, COD, TOC and heavy metal concentration are monitored in real time, rainfall intensity data are accessed into a control center, the pollutant load instantaneous rate L is calculated through a weighted summation formula, and the real-time monitoring of the pollution degree is achieved. A controllable flow distribution module in the flow distribution well distributes the rainwater to an enhanced treatment unit, a biological aerated filter system or a horizontal flow sedimentation tank, wherein the enhanced treatment unit comprises a rotational flow sand setting unit, an electrochemical heavy metal degradation unit and a chemical flocculation unit. The system is mainly used for realizing quality-divided efficient treatment and resource recycling of rainwater and guaranteeing the safety of a receiving water body.

The utility model provides a waste liquid treatment device for coal gas desulfurization, belongs to the technical field of wastewater treatment, and aims to solve the problems that only part of suspended solids can be removed or the pH value can be adjusted during desulfurization wastewater treatment in the prior art, and collaborative removal of pollutants such as sulfides, ammonia nitrogen, heavy metals and the like cannot be realized. The device comprises a waste liquid pool, a reaction tank, a decomposition tank and an ultrafilter which are sequentially communicated through communicating pipes, the waste liquid pool is connected with a liquid inlet pipe and is internally provided with a filter plate with filter holes, a first stirring shaft with stirring blades driven by a first motor is arranged in the reaction tank, the top of the reaction tank is connected with a liquid adding pipe, a second stirring shaft with stirring blades driven by a second motor is arranged in the decomposition tank, one side of the decomposition tank is provided with an air blower connected with the decomposition tank through an oxygen supply pipe, and the top of the decomposition tank is connected with an exhaust pipe. The device realizes full-flow treatment of waste liquid, the filter plate removes large impurities to prevent blockage, stirring promotes chemical reaction, oxygen supply and stirring improve microbial activity, the ultrafilter ensures effluent quality, efficient and continuous treatment can be realized, and pollution is reduced.

The invention discloses a sewage energy-saving control method and system based on multi-dimensional variable data analysis, and relates to the technical field of data analysis, and the method comprises the steps: analyzing the incidence relation between variable data in different processing stages, the incidence relation of variables comprises the relation between independent variables and dependent variables and the interaction relation between the independent variables, and the relation between the independent variables and the dependent variables is the relation between the independent variables and the interaction relation between the independent variables; the complex coupling relation among multiple variables is fully and accurately described, and a reliable basis is provided for follow-up regulation and control. And determining the corresponding regulation time delay and variability on each regulation node, and considering the regulation hysteresis and the variable change condition on the sewage treatment flow, thereby setting a threshold value and generating an evaluation index for guiding the subsequent sewage regulation. The regulation and control strategy of each regulation and control node is controlled based on the incidence relation and the regulation and control time delay between the variable data, the adaptability and accuracy of sewage node analysis and control are improved, the real-time sewage treatment effect is ensured, and the sewage treatment efficiency is improved.

The invention belongs to the technical field of wastewater treatment, and particularly relates to wastewater multi-stage treatment equipment for municipal engineering, which comprises a main body, the main body is communicated with a filter box, and a filter pipe and a blanking pipe are connected in the filter box; the filtering assembly comprises a rotating rod, the rotating rod is sleeved with a filtering plate, the right side of the main body communicates with a feeding pipe, and a water screening plate is connected into the feeding pipe; the regulation and control assembly comprises a linkage rod, a scraping plate and an isolation plate are arranged on the outer ring of the linkage rod, a limiting pipe is connected into the main body, a locking rod and a driving rod slide in an inner cavity of the limiting pipe, and the driving rod slides in the rotating rod; the stirring assembly comprises a stirring rod; the aeration assembly is connected to the lower end of the main body. According to the sewage stirring device, the filter plates can be conveniently detached and replaced, sewage can be stirred, meanwhile, the filter plates can be cleaned through power for stirring the sewage, pre-aeration can be conducted in the sewage stirring process, the stirring efficiency is improved, and meanwhile the aeration time is saved.

The utility model belongs to the technical field of sewage treatment equipment, and particularly relates to multi-stage purification integrated sewage treatment equipment which is characterized in that deslagging mechanisms are arranged at the bottoms of a primary settling chamber and a coagulating settling chamber; a pretreatment tank for stirring and filling sewage is arranged above the primary settling chamber; the secondary treatment tank comprises a plurality of partition plates which are arranged in parallel, and a first guide plate and a second guide plate which are fixed between every two adjacent partition plates; the secondary treatment tank is composed of a partition plate, a first guide plate, a second guide plate, a microorganism attachment part and an aeration plate, and the partition plate, the first guide plate and the second guide plate are matched to prolong the flowing path of sewage in the secondary treatment tank, so that oxygen discharged by the aeration plate can react with microorganisms in the sewage; therefore, most pollutants in the sewage can be changed into carbon dioxide and water by aerobic microorganisms through metabolism, and the sewage can be conveniently treated by adopting a biological method.

The invention discloses a real-time sewage treatment method based on sewage data monitoring, particularly relates to the technical field of sewage treatment, and is used for solving the problem of how to realize real-time sewage treatment under the condition that quality problems such as sewage blockage, drifting and missing exist in online monitoring data under complex and fluctuating working conditions. The problem that real-time, stable and energy-saving self-adaptive regulation and control can still be conducted on the sewage treatment process based on sewage monitoring data is solved, and the problems that due to dirty data and sudden change of working conditions, outlet water exceeds the standard, and energy consumption / chemical consumption is abnormal are avoided. Key water quality soft measurement and multi-source difference checking are implemented under the constraint of working condition numbers by constructing a sewage working condition map and a data quality evaluation rule base and introducing sliding time window feature extraction, monitoring credibility grading and sewage state fingerprints. The control strategy can still generate reliable aeration control instructions, backflow control instructions and dosing control instructions when monitoring data distortion and working condition fluctuation, so that the effluent is ensured to stably reach the standard, and the risk of control deviation is reduced.

The invention discloses a method and system for accurately controlling the concentration of dissolved oxygen (DO) of a sewage treatment aeration unit, and the method comprises the steps: constructing a prediction model, and obtaining a model prediction value of the DO concentration at a current moment or a future moment according to the prediction model; calculating a current confidence coefficient; taking the current confidence coefficient as a weight coefficient, and carrying out weighted fusion calculation on a DO concentration measured value at the current moment and a DO concentration model prediction value to obtain a DO concentration fusion variable; the aeration air volume is adjusted or controlled with the purpose of minimizing the error between the DO concentration fusion variable and the DO concentration target value; the problem of overshoot oscillation caused by DO response lag in traditional control is solved, and a dynamic and accurate control solution is provided for the DO concentration of the aeration unit of the sewage plant.

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 an in-situ treatment device for overflow sewage. The in-situ treatment device comprises a regulation and storage tank, a flow guide impurity filtering mechanism, a self-floating overflow treatment mechanism and a sewage discharge mechanism, the flow guide and impurity filtering mechanism is fixedly assembled in the regulation and storage tank and used for conducting flow guide and self-cleaning filtering on inlet water of the regulation and storage tank, the flow guide and impurity filtering mechanism comprises a filtering grating, the filtering grating is fixedly assembled at a water inlet of the regulation and storage tank, and a pair of scrubbing rollers is rotationally assembled above the filtering grating; and an impurity removal roller is arranged on one side of the scrubbing roller. And the self-floating overflow treatment mechanism is assembled below the filter grating. By arranging the flow guide impurity filtering mechanism and the self-floating type overflow treatment mechanism, suspended impurities in overflow sewage can be guided out in an auxiliary mode, the smoothness of the overflow sewage is improved, meanwhile, floating type aeration treatment can be conducted on the storage pond, the effect of on-site treatment on the overflow sewage is improved, and the service life of the storage pond is prolonged. The high efficiency of filtering treatment on the overflow sewage is obviously improved.

The invention relates to the technical field of industrial wastewater treatment, and discloses a modular industrial wastewater intelligent purification treatment system which comprises a sensor monitoring module, an intelligent analysis module, a modular treatment module, an automatic control module and a resource recovery module, the sensor detection module comprises a PH sensor, a turbidity sensor, a dissolved oxygen sensor, a heavy metal sensor and an ammonia nitrogen sensor, the intelligent analysis module comprises a pollutant identification module and a dynamic adjustment process module, and the modular treatment module comprises a physical treatment module, a chemical treatment module and a biological treatment module. The modularized intelligent purification treatment system for industrial wastewater can be rapidly and accurately adjusted according to real-time changes of sewage components, compared with a traditional immobilization process, waste of resources is avoided, the treatment efficiency is remarkably improved, meanwhile, multiple treatment technologies such as physical treatment, chemical treatment, biological treatment, adsorption and disinfection are integrated, and the system is suitable for popularization and application. And the device has strong treatment capacity on combined pollution and emerging pollutants.

In a cooperative optimal control system, firstly, two-level models are established to capture the dynamic features of different time-scale performance indices. Secondly, a data-driven assisted model based cooperative optimization algorithm is developed to optimize the two-level models, so that the optimal set-points of dissolved oxygen and nitrate nitrogen can be acquired. Thirdly, a predictive control strategy is designed to trace the obtained optimal set-points of dissolved oxygen and nitrate nitrogen. This proposed cooperative optimal control system can effectively deal with the difficulties of formulating the dynamic features and acquiring the optimal set-points.

The invention relates to the technical field of sewage treatment, in particular to a low-temperature concentration and biological enhancement coupled denitrification sewage treatment system which comprises a low-temperature concentration section and a biological enhancement section, the biological enhancement section is composed of an aerobic tank and an anoxic tank, three fixing plates are fixedly connected to one side of the inner wall of the aerobic tank, and three sliding plates are arranged on the other side of the inner wall of the aerobic tank; the invention further relates to a using method of the denitrification sewage treatment system coupling low-temperature concentration and biological enhancement, through arrangement of structures such as an adjusting plate, a straight plate, an F-shaped frame and an adjusting mechanism, when the retention time of sewage in an aerobic tank needs to be adjusted, the vertical adjusting plate can be quickly turned over to be in a transverse flat state, so that the sewage in the aerobic tank can be quickly adjusted; sewage passing between the adjusting plate and the fixed plate and between the adjusting plate and the sliding plate is changed into an S-shaped flow path from an original direct flow path, so that the treatment reaction time of the sewage in the aerobic tank is prolonged, and meanwhile, the side aeration of the bulkhead and the original bottom aeration assembly structure in the aerobic tank are added, so that more dead angles are avoided, and the treatment effect of the device is improved.

The invention provides a process method and system for directly capturing carbon dioxide from air and converting and utilizing the carbon dioxide. The process method comprises the following steps: adsorbing raw material gas through a carbon dioxide trapping device, and heating and desorbing to obtain purified carbon dioxide gas; the purified carbon dioxide gas and the electrolyte are subjected to electrocatalytic conversion to obtain synthesis gas, oxygen and condensate water, and the condensate water is recycled through water treatment operation to be used for supplementing the electrolyte; the method comprises the following steps: carrying out Fischer-Tropsch synthesis reaction, hydrocracking and isomerization reaction on synthesis gas to obtain an isomerized oil-gas mixture, wherein heat energy generated by the reaction provides heating desorption heat; and carrying out gas-liquid separation on the heterogeneous oil-gas mixture to obtain combustible gas and an upgraded oil product, carrying out rectification operation on the upgraded oil product to obtain an SAF component and a heavy oil product, and carrying out oxygen-enriched combustion reaction on the combustible gas and oxygen to provide heating desorption heat or supply required heat energy. An integrated and flexible industrial technology platform is developed, carbon capture and conversion processes are seamlessly connected, full-chain optimization from CO2 removal to high-added-value product generation is realized, and self heat energy requirements and wastewater utilization can be met.

The utility model discloses multistage sewage treatment equipment for chemical engineering, and particularly relates to the field of chemical engineering, the multistage sewage treatment equipment comprises a square filter frame, a secondary treatment cylinder and a biological oxidation pond, the left side surface of the square filter frame is fixedly connected with a square box, and the inner bottom wall of the square box is fixedly connected with a speed reducing motor; the output end of the gear motor is fixedly connected with a screw rod, the outer surface of the screw rod is in threaded connection with a square screw plate, the upper surface of the square screw plate is fixedly connected with two transmission square rods, and the top end of each transmission square rod penetrates through the square box and extends to the position above the square box; the top end of each transmission square rod is fixedly connected with a connecting plate. According to the utility model, the coarse filter screen can be taken out from the square filter frame, so that the coarse filter screen can be conveniently detached, a worker can conveniently clean sundries on the coarse filter screen, the coarse filter screen is prevented from being blocked to influence subsequent sewage treatment, the coarse filter screen can be conveniently cleaned, and the cleaning operation is simpler.

The invention discloses an efficient, environment-friendly and energy-saving aquaculture tail water treatment system, and belongs to the technical field of aquaculture. Comprising an indoor small circulation system and an outdoor large circulation system, adopts dual-mode cooperative operation of'indoor small circulation and outdoor large circulation ', combines physical, biological and ecological treatment technologies, realizes efficient purification of water quality and cyclic utilization of resources, is ecological and environment-friendly, and is high in reliability; oxidation, suspended solids, total nitrogen, total phosphorus and other organic matters and compounds in the aquaculture tail water can be effectively removed, the pH value is effectively adjusted, the tail water treated by the system can be recycled and can reach the standard to be discharged, the water source and the production cost are effectively saved, surrounding farmers effectively utilize the water body, the annual income is increased, and the method has remarkable ecological, social and economic benefits and is worthy of popularization and application. And the method meets the requirements of advancement, applicability and safety, and has a relatively large demonstration application scale.

The application relates to the technical field of garden engineering, and discloses a garden rainwater collection and purification treatment device based on multistage filtration, which comprises a support, a purification tank is fixedly connected to the top of the support, a biological filtration assembly for biodegradation and purification of rainwater is further arranged in the purification tank, and a sedimentation tank for rainwater collection is further arranged at the top of the purification tank. Compressed air is released into the cylinder through the aeration disc, the closed structure of the cylinder restricts the bubbles from diffusing in disorder, the screw thread flow guide groove in the cylinder guides the bubbles to spiral upward, the rising bubble flow impacts the broken paddle at the bottom of the shaft support to rotate, the large bubbles are broken into micro-bubbles through shearing to increase the specific surface area, the bubbles are efficiently utilized, the problem that the bubbles and the water body are not fully contacted and the dissolved oxygen is insufficient is solved, and the water quality requirement of the garden water is met.

The utility model discloses a floating type purification device for a river drain outlet. The floating type purification device comprises a mounting frame, the two sides of the mounting frame are each fixedly provided with two connecting frames, the two connecting frames located on the same side are fixedly provided with the same floating body, the mounting frame is slidably provided with two U-shaped frames, and the two U-shaped frames are provided with sewage purification structures. During operation, the device can be placed at a sewage draining exit of a river channel, floats on the water surface by utilizing the floating body, and pumps water into the purification box by utilizing the electric pump, so that the water is respectively purified by the solid microorganism carrier layer and the braid curtain type biological membrane carrier and then is discharged; by arranging the electric pump, water can be promoted to pass through the solid microorganism carrier layer and the braid curtain type biological membrane carrier, then the water purification efficiency is improved, the height of the purification box can be adjusted by rotating a handle, the purification box can adapt to river channels with different depths to be used, and then the applicability and stability of the device are improved.

The present invention belongs to the fields of energy conservation, consumption reduction and carbon neutralization in terms of sewage treatment, and provides a sewage treatment device and method for achieving enhanced nitrogen and phosphorus removal and N2O emission reduction by means of an AOA process. The device mainly comprises a raw sewage tank, an AOA reactor and a sedimentation basin. Sewage firstly enters the AOA reactor and sequentially passes through an anaerobic zone, an aerobic zone and an anoxic zone in a water flow direction. Anaerobic phosphorus release and internal carbon source storage processes are mainly performed in the anaerobic zone; nitrification and aerobic phosphorus absorption are performed in the aerobic zone; and endogenous denitrification and anaerobic ammonia oxidation are performed in the anoxic zone. In addition, the escape of N2O in the aerobic zone is reduced by controlling dissolved oxygen, the carbon sequestration capability of the rear anoxic zone is fully utilized, and a large amount of dissolved-state N2O generated in the aerobic zone is removed. The present application mainly provides a brand-new solution for a key low-carbon denitrification technique for sewage treatment, and the technique can effectively reduce energy and chemicals required for aeration, excess sludge yield and N2O emissions during operation, and has application prospects.

The utility model discloses a high-efficiency rotary type suspension ball filler with a good aeration effect, which comprises an upper hemisphere and a lower hemisphere, a first fixed chuck is arranged on the outer side surface of the upper hemisphere, and a second fixed chuck is arranged on the outer side surface of the lower hemisphere. The first fixing chuck and the second fixing chuck are fixedly connected through a hexagonal screw, the upper end surface of the first fixing chuck is fixedly connected with a blade structure through a screw, the upper end surface of the blade structure is coated with a first smooth coating structure, and the lower end surface of the blade structure is coated with a second smooth coating structure. And a streamline curved surface structure is arranged on the surface of the blade structure. According to the utility model, a plurality of blade structures are arranged outside the suspended ball filler structure, and the blades are subjected to multifunctional design protection, so that the rotating effect of the suspended ball filler is better during aeration, a biological layer on an internal sponge block can be conveniently and quickly dropped, and the suspended ball filler has the advantages of good degradation effect and high sewage purification efficiency.

The invention relates to the technical field of sewage treatment, and discloses an integrated sewage treatment nitrification liquid backflow control system. The system comprises a human-computer interaction interface, a water quality detection sensor acquisition module, a total nitrogen prediction module, a reflux pump control module and a data storage module which are connected through 485 communication interfaces. According to the method, a BP + LSTM mixed neural network is adopted, water quality detection parameters including the pH value, the chemical oxygen demand (COD), the biological oxygen demand (BOD), the sludge concentration (SS) and the dissolved oxygen (DO) are combined, the total nitrogen solubility in an anoxic pond and an aerobic pond in the integrated sewage treatment equipment is predicted, the nitrification liquid backflow proportion is calculated, and therefore operation of a backflow pump is accurately controlled. The system can adjust the backflow ratio of the nitrification liquid in real time, solves the problem that the existing equipment cannot adjust the backflow ratio in real time according to the total nitrogen content, and avoids the phenomenon of poor denitrification effect caused by low backflow ratio or energy waste caused by high backflow ratio.

A wastewater treatment apparatus has a tank with an access opening, at least one fixed film media pod positioned in the interior of the tank, a diffuser positioned in the interior of the tank, and an air pump connected to the diffuser. The fixed film media pod is formed of a polymeric material and has openings framed by the polymeric material. The diffuser is adapted to aerate liquid in the interior of the tank. The media pod has a tubular structure extending vertically in the interior of the tank and positioned above the bottom of the tank. Floats are attached to the top of the media pod so as to suspend the media pod in the liquid in the tank.

The invention relates to the technical field of sewage treatment, and discloses a dissolved oxygen concentration control method for sewage treatment, which comprises the following steps: firstly, acquiring real-time dissolved oxygen concentration in a sewage treatment system to calculate feed-forward input, and calculating required feed-forward blower power SVuFF according to a dissolved oxygen concentration set value, flow of sewage flowing into an aerobic tank and the dissolved oxygen concentration; a dissolved oxygen concentration adjusting model based on a Q-learning algorithm is constructed, an adjusting strategy set in the dissolved oxygen concentration adjusting model is subjected to iterative training through the Q-learning algorithm, an optimal action strategy is generated, dynamic balance between exploration and utilization is achieved in the training process through an epsilon-greedy strategy, and the optimal action strategy is generated by means of the generated optimal action strategy. According to the method, the working state of the air blower is dynamically regulated and controlled, the dissolved oxygen concentration can be flexibly regulated according to real-time monitoring data through the regulation strategy, the dissolved oxygen concentration is always in a preset control interval, the dissolved oxygen concentration in the sewage treatment process can be accurately controlled, and the purpose of saving energy can be achieved.