1973results 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 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 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 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 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 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 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.

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 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 discloses an aeration rate control method, device, equipment and product for sewage treatment, and the method comprises the steps: obtaining a predicted aeration efficiency value at the current time through a neural network model; determining a current required aeration rate value for removing unit ammonia nitrogen; and finally calculating an actual aeration rate value. According to the aeration rate control method, device, equipment and product for sewage treatment disclosed by the invention, rapid reaction can be carried out according to the actual change condition in the region in the aerobic tank corresponding to aeration, the aeration rate value in the region can be immediately adjusted, and the aeration rate control method, device, equipment and product have the advantages of high aeration rate control reaction speed and high aeration rate control precision; the sewage treatment efficiency and quality are effectively improved.

The utility model relates to the technical field of nitrogenous wastewater treatment, in particular to a nitrogenous wastewater treatment device. The device comprises a reactor, an aeration assembly, a water inlet assembly and a monitoring assembly, a guide cylinder is coaxially arranged in the reactor; the reactor is filled with microorganism balls; the monitoring assembly comprises a main controller and a plurality of detection probes; the main controller is arranged outside the reactor, and each detection probe is arranged inside the reactor; the main controller is respectively connected with each detection probe through a line; one end of the water inlet assembly is communicated with nitrogenous wastewater, and the other end is communicated with the bottom of the reactor; the water inlet assembly comprises a water inlet pump connected with the main controller; one end of the aeration assembly is communicated with air or oxygen, and the other end is communicated with the bottom of the reactor; and the aeration assembly comprises an air blower connected with the main controller. The device disclosed by the utility model has the effects of simple and compact structure, small occupied area, low operation cost and good nitrogen removal performance.

The utility model discloses a surface aerator which comprises a rack, a motor and a centrifugal fan are mounted on the outer surface of the rack, and a transmission component is mounted among the motor, the rack and the centrifugal fan; a fixed air pipe fixedly penetrates through an air outlet of the centrifugal fan, and an annular pipe fixedly penetrates through the other end of the fixed air pipe. According to the sewage oxygenation device, through the arrangement of the transmission assembly, the motor, the centrifugal fan, the fixed air pipe, the annular pipe, the main pipe, the movable pipe, the telescopic adjusting assembly, the triangular pipe and the micro holes, when the impeller is used for carrying out oxygenation on upper-layer sewage, oxygenation operation can be carried out on lower-layer sewage, and the oxygen supplementing effect on the lower-layer sewage is improved; propagation of beneficial bacteria in lower-layer sewage is facilitated, so that the sewage treatment effect is improved, and the lowering depth of the triangular pipe can be adjusted as required, so that the use requirement is met, and the overall practicability is ensured.

The invention provides a preparation method of aquatic organism bottom modification particles, which comprises the following steps: adding bacillus subtilis liquid, an oxygen producer and an adhesive into a base material, stirring and granulating to obtain oxygen release core particles; stirring the oxygen release core particles in a roller coating machine, and intermittently spraying a chelating agent in the stirring process to obtain transition particles; and spraying the heavy metal adsorption sol on the transition particles, spraying the bonding solution after cross-linking and curing, then roll-coating the counterweight particles, and drying to obtain the aquatic organism bottom-changing particles. Reducing harmful gas and nitrogen and oxygen indexes are reduced, heavy metals and fine suspended solids are captured synchronously, and the oxidation-reduction buffer capacity of the bottom mud and the stability of a water body are recovered.

The utility model relates to an aeration backwashing device for reducing blockage of a percolation tank of a constructed wetland. The device comprises a pore plate, a first backwash main pipe, a first backwash branch pipe, a second backwash main pipe and a second backwash branch pipe, a percolation tank is separated by the pore plate, the upper layer is a percolation layer, the lower layer is a drainage layer, the first backwash main pipe is mounted below an aeration main pipe, and the second backwash main pipe is mounted below the aeration main pipe. First backwash branch pipes corresponding to the aeration branch pipes are uniformly arranged on the first backwash main pipe, exhaust holes are uniformly formed in the first backwash branch pipes, and the first backwash main pipe is connected with air supply equipment through a second air supply pipe; the second backwash main pipe is mounted at the drainage layer, second backwash branch pipes are uniformly arranged on the second backwash main pipe, drainage holes are uniformly formed in the second backwash branch pipes, and the second backwash main pipe is connected with water supply equipment through a water supply pipe. According to the scheme provided by the invention, the percolation layer can be backwashed in a water-gas combination manner, and the blockage clearing effect on the percolation layer is ensured.

The invention belongs to the technical field of feces treatment, particularly relates to integrated rural toilet feces deep separation treatment equipment, and aims to solve the problems that existing equipment is poor in operation stability and not ideal in total phosphorus and ammonia nitrogen pollutant removal rate, the integrated rural toilet feces deep separation treatment equipment comprises a solid-liquid separation module, an anaerobic treatment tank, an aerobic treatment tank and a liquid-phase flocculation unit, a solid phase and a liquid phase of feces are separated through the solid-liquid separation module, the liquid phase is flocculated through the liquid phase flocculation unit, the liquid phase and the solid phase are put into corresponding fermentation areas of the anaerobic treatment tank to be subjected to anaerobic fermentation treatment, the liquid phase is conveyed to the aerobic treatment tank to be subjected to further aerobic treatment, and the liquid phase and the aerobic treatment tank are subjected to anaerobic fermentation treatment. The integrated treatment of solid-liquid separation, anaerobic biogas production and aerobic denitrification of rural toilet feces is realized, the solid phase and the liquid phase after the integrated treatment can be respectively subjected to further resource utilization, and the system is extremely suitable for being used in rural areas.

The invention relates to the technical field of garden engineering, and discloses a garden rainwater collection and purification treatment device based on multi-stage filtration, the garden rainwater collection and purification treatment device based on multi-stage filtration comprises a support, and the top of the support is fixedly connected with a purification box; a biological filtering assembly used for biodegrading and purifying rainwater is further arranged in the purifying box, and a settling box used for collecting the rainwater is further arranged on the top of the purifying box. Compressed air is released by the aeration disc and then enters the cylinder body, a closed structure restrains bubbles to avoid disordered diffusion, a threaded flow guide groove in the cylinder body guides the bubbles to spirally rise, rising bubble flow impacts crushing blades at the bottom of a shaft bracket to rotate, large bubbles are crushed into micro bubbles through the shearing action to increase the specific surface area, and efficient utilization of the bubbles is achieved. The problems of insufficient contact between bubbles and water and insufficient dissolved oxygen are solved, and the water quality requirement of garden water is met.

The utility model belongs to the technical field of biological denitrification of industrial aquaculture water, and particularly relates to a denitrification device suitable for an industrial aquaculture system. Comprising an aerobic nitrification zone, a carbon source zone, an aerobic denitrification zone and a suspended particle removal zone which are communicated in sequence, a filter material is arranged in the aerobic nitrification zone, and the aerobic nitrification zone is used for carrying out biological oxidation on aquaculture water to generate nitrate; the upper part of the carbon source region is filled with carbon sources; the aerobic denitrification area is used for reducing nitrate in the water body into nitrogen; the suspended particle removal area is used for removing suspended particles in the water body. A water inlet pipe is arranged at the bottom of one side wall of the aerobic nitrification area, an aerobic nitrification area overflow port is formed in the upper part of the other side wall of the aerobic nitrification area, and the internal space of the aerobic nitrification area is distributed in a shape; a water outlet pipe is arranged at the bottom of the side wall of the suspended particle removal area. According to the device, aerobic nitrification, aerobic denitrification and suspended particulate matter removal are organically integrated, intensification and modularization are realized, the device is simple in structure and convenient to operate, and the culture denitrification effect is effectively improved.

The utility model discloses a fishpond industrial aquaculture system which comprises an aquaculture unit used for aquaculture and separating circulating water and feces. The ecological purification unit is used for purifying circulating water and increasing oxygen, circulating water outlet of the breeding unit is connected with the ecological purification unit through a circulating water pipe, and return water purified and increased by the ecological purification unit is connected with the breeding unit through a return water pipe, so that the circulating water separated by the breeding unit is discharged to the ecological purification unit to be purified and increased oxygen and then flows back to the breeding unit; the precipitation unit is used for precipitating and concentrating the feces and is connected with the breeding unit so as to discharge the feces separated by the breeding unit to the precipitation unit for precipitation and concentration; the resourceful treatment unit is used for resourceful treatment of the feces, and the resourceful treatment unit is connected with the precipitation unit so as to discharge the feces precipitated and concentrated by the precipitation unit to the resourceful treatment unit for resourceful treatment; the culture unit and the ecological purification unit are both arranged in a water area, and the precipitation unit is arranged in or outside the water area. Water quality is improved; and cost is reduced.

The invention discloses an urban sewage treatment device, which relates to the technical field of sewage treatment aeration equipment, and comprises a main body box, an aeration tank, and a driving mechanism, a speed reducing mechanism, an air supply mechanism and a distribution mechanism which are integrated in the main body box. According to the invention, two core functions of low-speed rotating stirring and sewage aeration of the aeration mechanism are synchronously realized by only depending on an independent driving source of external compressed gas, and additional arrangement of traditional stirring equipment is not needed, so that on one hand, additional electric energy consumption required by operation of the stirring equipment is saved, and the trend of energy conservation and emission reduction is met; the purchase and installation investment of the stirring equipment is reduced, meanwhile, the problem that the stirring equipment is easy to fail under the complex working condition of sewage is avoided, the subsequent maintenance and repair cost and the flow interruption risk are reduced, and the overall structure and control logic of the sewage treatment system are greatly simplified.

The invention discloses a sewage treatment system and treatment method suitable for a plateau low-pressure environment, and the sewage treatment system suitable for the plateau low-pressure environment comprises a first SBR reactor which is provided with a water inlet pipe, a stirrer and a first water decanter; the second SBR reactor is provided with an MABR aeration assembly and a second water decanter; a hollow fiber membrane cavity of the MABR aeration assembly is connected with an air supply unit; the control unit is used for coordinating and controlling the periodic operation of the first SBR reactor and the second SBR reactor, and is used for regulating and controlling the output power of the air supply unit or the valve opening degree according to the real-time monitoring value of the DO sensor in the aeration stage of the second SBR reactor; therefore, the air supply pressure in the membrane cavity of the MABR aeration assembly is dynamically controlled. According to the invention, the limitation of low atmospheric pressure is eliminated, the synergistic interaction of nitrogen removal and phosphorus removal is realized, and the aeration requirement is further reduced.

A method includes forming a substrate and coating at least a portion of the substrate with a coating. In some implementations, the coating is a carbonaceous coating. The coated substrate is deployed into a body of water. The coated substrate is at least one of pre-seeded with a target product before being deployed or configured to attract target product present in the body of water so as to become seeded with the target product after being deployed. The coating can transition from a first configuration to a second configuration to adjust a buoyancy of the coated substrate. In some embodiments, the coating is formulated to sequester carbon as it transitions from the first configuration to the second configuration. In some implementations, the coating can be configured to sequester carbon when deployed into the body of water with or without the target product being seeded on the substrate.

The invention provides a sewage plant water-energy-drug collaborative optimization method and system, and the method comprises the steps: obtaining the data of a technological process and a material transfer relationship of a sewage plant, constructing a graph network structure model with a technological unit as a node and material flow as an edge, and carrying out the preprocessing, thereby obtaining dynamic coupling graph structure data; a dynamic coupling graph neural network model containing a node feature coding layer, a time sequence coding module, a space message passing layer and an attention mechanism layer is constructed based on the data, and a prediction model capable of representing the dynamic coupling relation of the process unit is obtained through historical data training; then, a multi-objective optimization function which takes the lowest ton water treatment cost as an objective and covers water quality standard reaching, energy consumption and medicament dosage constraints is constructed; and in combination with the prediction model and the optimization function, the optimal operation parameters are solved through an optimization algorithm, and a whole-plant collaborative optimization decision scheme is generated. According to the invention, the dynamic coupling GNN prediction model and the virtual element multi-domain parallel optimization technology are integrated, and intelligent operation management of the sewage treatment plant is realized.

The pure membrane MBBR sewage treatment system comprises an anoxic denitrification zone, an anaerobic ammonia oxidation zone, an aerobic oxidation zone, a high-density sedimentation zone, an MBBR biological filtration zone, a backwashing water tank and an equipment room, the anoxic denitrification region is used for carrying out amination reaction, organic matter hydrolysis reaction and denitrification reaction on the sewage and nitrate and nitrite in the anoxic denitrification region; the anaerobic ammonia oxidation zone is used for reacting the sewage with nitrite to generate nitrogen; the aerobic oxidation zone is used for promoting microorganisms to degrade organic matters in sewage and convert ammonia nitrogen; the high-density settling zone is used for separating muddy water in sewage; the MBBR biological filtration area is used for filtering suspended matters in the sewage; the backwashing water tank is used for providing backwashing make-up water for the MBBR biological filtration area; and the equipment room is used for placing disinfection equipment, a fan and a power distribution control system.