3127 results about "Effluent" patented technology

The invention provides a sewage treatment carbon source intelligent adding method, which comprises the following steps: collecting multi-parameter feed-forward and feedback signals of water inlet and an anoxic tank, constructing a dynamic model containing feed-forward compensation, model prediction control and feedback compensation, calculating the theoretical adding amount of a carbon source, inputting a predicted value and feedback parameters into an LSTM network for correction, and optimizing a network structure by a genetic algorithm. The adding amount is controlled in a closed-loop mode through a variable frequency pump, the LSTM weight is updated on the basis that the error is larger than 5%, and finally a control strategy is optimized by using an NSGA-II algorithm and integrating carbon source consumption, effluent total nitrogen and energy consumption. The dynamic self-adaptive carbon source adding method is constructed by fusing feedforward perception, LSTM prediction, feedback regulation and multi-objective optimization, so that quick response and accurate control on water quality fluctuation are realized, the denitrification efficiency and the carbon source utilization rate are improved, and the method has excellent engineering adaptability and popularization value.

The invention provides a sewage treatment plant terminal effluent carbon source quality detection and evaluation method, which realizes full-flow dynamic evaluation and regulation of carbon source quality through on-line monitoring and intelligent algorithm fusion. According to the method, an online water quality full-spectrum detector is used for collecting original spectrum data flow, and after preprocessing such as variational mode decomposition denoising and mutual information feature selection, organic matter content quantification, variation trend analysis and anomaly detection are completed in combination with algorithms such as a support vector machine and an autoregressive moving average model. An entropy weight method is introduced to dynamically adjust the weight of the evaluation model, model parameters are optimized based on a gradient descent algorithm, a process adjustment instruction is generated through reinforcement learning and fuzzy logic, and an automatic system is linked to execute regulation and control. According to the method, the problems of hysteresis and singleness of traditional offline analysis are solved, multi-dimensional real-time evaluation, abnormal quick response and process dynamic optimization of the quality of the carbon source are realized, the sewage treatment efficiency and the effluent quality stability are improved, and a technical support is provided for continuous standard reaching of the quality of the carbon source.

The invention discloses a sewage plant accurate dosing method based on multi-mode automatic machine learning, and belongs to the technical field of sewage treatment. The method comprises the following steps: acquiring historical sensing data and image data of a sewage plant; extracting key features in the image by using a YOLO visual model, fusing the key features with sensor data, and constructing a multi-modal sample data set; carrying out modeling training on the fused data by adopting an automatic machine learning framework, and constructing a'water inlet-dosing-water outlet 'prediction model; generating a reference sample data set according to an existing dosing rule; inputting the sample data into the trained prediction model to obtain predicted effluent quality data, and adjusting the dosage until the predicted effluent quality of all samples meets a water quality standard condition; and finally outputting an optimized dosing sample data set. According to the invention, precision and real-time dosing of the sewage plant can be realized, chemical waste can be effectively reduced, the treatment efficiency is improved, the cost is saved, and the water quality is ensured to stably reach the standard.

The invention discloses a process and system for recovering phosphorus and fluorine from ardealite leachate, which comprises the following steps: feeding the ardealite leachate into an induced crystallization reactor for induced crystallization, discharging generated large-particle fluorapatite crystals from a crystal discharge port at the bottom of the induced crystallization reactor, and collecting and recycling; aluminum hydroxide flocs and fine-particle fluorapatite crystals enter a cyclone separator along with the effluent, the fine-particle fluorapatite crystals are separated and then flow back to the induced crystallization reactor, the aluminum hydroxide flocs form precipitates in the flocculation sedimentation tank through flocculation to be removed, and the effluent of the flocculation sedimentation tank enters a multi-stage treatment system. According to the method disclosed by the invention, fluorine and phosphorus in the phosphogypsum leachate are recovered together, the recovered fluorapatite finished product is high in purity and can be recycled, and the amount of chemical sludge is also greatly reduced, so that the treatment cost of the sludge is reduced.

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

The invention discloses a sewage plant total phosphorus concentration prediction method based on multiple machine learning models and a control system, and belongs to the field of environmental monitoring and treatment. The method comprises the following steps: automatically collecting detection data of a sewage plant, and generating a time sequence data set through intelligent preprocessing; according to the method, a total phosphorus concentration prediction model is constructed by adopting multiple machine learning algorithms, a reference prediction model is automatically selected through evaluation indexes, hyper-parameter tuning is performed by utilizing a swarm intelligence optimization method, and an optimized high-performance prediction model is obtained. The model is deployed to a real-time monitoring system, and through integration with a PLC and monitoring hardware, high-frequency prediction and dynamic regulation and control closed loop are realized; and continuously optimizing model parameters and a regulation and control strategy by returning deviation information to form a'prediction-control-optimization 'closed loop. According to the method, the effluent total phosphorus concentration prediction precision and regulation efficiency are remarkably improved, the agent adding cost is reduced, and the intelligent level of a sewage treatment system is improved.

The invention discloses an oxidation-reduction free radical synergistic electrochemical wastewater treatment method and system. The method comprises the following steps: collecting pollutant concentration in wastewater and electrochemical reactor state parameters in real time through a sensor array; analyzing a pollutant change trend based on the data, and determining an optimization target value of an active substance generation proportion in combination with historical data; the trained classification model is used for classifying the water body state, and whether dynamic adjustment is needed or not is judged; if necessary, calculating the state parameter correction according to the deviation between the target value and the actual value, and adjusting the operation of the reactor; and monitoring the adjusted active substance proportion and degradation efficiency, and dynamically updating the optimization target according to the adjusted active substance proportion and degradation efficiency and the pollutant trend to realize continuous self-adaptive regulation and control. The intelligent closed-loop control of the reaction parameters is realized, the stability of the treatment efficiency is obviously improved, and the energy consumption and the risk of secondary pollution are effectively reduced.

The invention provides an autonomous adjustment method and system for a thermal power plant desulfurization wastewater dosing device, and the method comprises the steps: collecting multiple parameters such as flow, pH value, heavy metal ion and suspended matter concentration in real time through on-line monitoring instruments arranged at a water inlet end, a reaction unit and a water outlet end; constructing and continuously updating a dynamic mathematical model based on historical data and a reaction mechanism; a control system integrating intelligent algorithms such as a neural network and fuzzy control is utilized, and optimal dosing parameters are calculated in combination with the model and real-time data; a dosing pump or a valve is driven to execute precise dosing; and finally, closed-loop optimization is formed through effluent quality feedback. According to the invention, automatic, accurate and self-adaptive adjustment of the dosing device is realized, the defects that a traditional mode depends on manpower and response lags behind are overcome, stable and standard discharge of desulfurization wastewater is effectively guaranteed, meanwhile, medicament consumption and operation cost are remarkably reduced, and the automation level and the capability of coping with working condition fluctuation of the system are improved.

The invention provides a low C / N sewage nitrogen and phosphorus removal method based on MABR-DPR-anaerobic ammonia oxidation, which couples anaerobic, membrane aeration anoxic and anaerobic ammonia oxidation processes, forms an anoxic environment in a water phase of a membrane aeration reactor, and enriches denitrifying phosphorus-accumulating bacteria. And the anaerobic phosphorus release and anoxic denitrification nitrogen and phosphorus removal processes of the denitrifying phosphorus-accumulating bacteria are realized through the backflow of the sludge between the anaerobic tank and the membrane aeration reactor. Nitrite accumulated in effluent of the membrane aeration reactor supplements an electron acceptor for a subsequent anaerobic ammonia oxidation deep denitrification process, and meanwhile, a carbon source is obviously consumed in an anoxic denitrification nitrogen and phosphorus removal process of the membrane aeration reactor, so that inhibition of influent organic matters on an anaerobic ammonia oxidation process is effectively weakened. The process solves the problem that the carbon source is seriously insufficient in the nitrogen and phosphorus removal process of the low C / N sewage, and the stable and efficient nitrogen and phosphorus removal effect can still be maintained under the condition that an external carbon source is not needed.

The invention relates to the technical field of sewage treatment, and discloses an integrated sewage treatment method based on intelligent sensing. According to the method, sewage flow, PH value, temperature, turbidity and suspended matter concentration are collected in real time through an intelligent sensor, in each treatment link, the intelligent sensor can monitor the concentration of organic matter, nitrogen, phosphorus and other pollutants, the pollutant removal rate and the biological reaction rate are calculated, timely adjustment of a sewage treatment strategy is achieved, and the sewage treatment efficiency is improved. Through real-time monitoring of dissolved oxygen, temperature and mixed liquid reflux ratio in the bioreactor, reaction conditions are optimized, biodegradation efficiency and sludge yield are improved, and through monitoring of the dosage and reaction time in the reaction process, the dosage adding proportion is optimized, so that the removal effect of chemical reaction is improved; finally, the flow, the PH value, the chemical oxygen demand and the biological oxygen demand of the treated effluent are comprehensively monitored, so that the sewage treatment efficiency and reliability are remarkably improved.

The invention discloses a system and a method for classified sewage treatment, and belongs to the technical field of environmental engineering and water treatment. The system comprises the following components: an intelligent water quality detection module, which is used for real-time and accurate monitoring of COD, BOD, ammonia nitrogen, total phosphorus, suspended matter concentration and heavy metal content; the sectional bioreactor realizes deep removal of nitrogen and phosphorus and efficient biological treatment by flexibly adjusting reaction conditions of each section; the intelligent flocculation control module is used for automatically and accurately adjusting the adding amount of a flocculating agent, and is combined with integrated operation of efficient inclined tube precipitation and sludge concentration, so that the water quality of discharged water is stable, and the medicament consumption is reduced; the ultrafiltration membrane bioreactor effectively removes residual suspended matters and colloids, and ensures that the effluent stably reaches the standard for a long time through the synergistic effect of catalytic ozonation; and the sludge treatment module is used for realizing collaborative optimization management of sludge reduction, recycling and energy recycling.

The invention discloses an adsorption-extraction combined heavy metal polluted water remediation system and method, and belongs to the field of water pollution treatment. The system is provided with a sensing unit which collects data in real time through a heavy metal concentration sensor and the like; the model unit outputs key information such as adsorbent real-time saturation and the like based on the acquired data and an adsorbent saturation prediction model; the decision-making unit is used for calculating a dynamic threshold value according to the information, accurately judging regeneration time and optimizing regeneration parameters; the execution unit executes a regeneration operation according to the instruction. And the feedback unit feeds back the regenerated data to the model unit to realize dynamic optimization of the system. According to the method, closed-loop operation of data acquisition, processing, decision making and feedback is realized based on cooperation of all units of the system. According to the invention, the remediation efficiency of the heavy metal polluted water body is effectively improved, the regeneration of the adsorbent is accurately controlled, the operation energy consumption is reduced, the complex and changeable pollution working conditions can be better handled, and the effluent quality is guaranteed.

The invention relates to the technical field of wastewater treatment, and discloses a double-membrane reclaimed water recycling device and a recycling method.The double-membrane reclaimed water recycling device comprises a support and an ultrafiltration membrane tank arranged in the support, a reverse osmosis membrane tank is fixed in the support, a settling tank is fixed in the support, a water storage tank is fixed in the support, and the double-membrane reclaimed water recycling device further comprises a tubular ultrafiltration membrane, a water storage tank and a water storage tank, the ultrafiltration membrane tank is fixed in the ultrafiltration membrane tank; the tubular reverse osmosis membrane is fixed in the reverse osmosis membrane tank; the wastewater is efficiently treated; when to-be-treated water is in a normal working state, the cleaning float bowl is driven by water pressure to move up and down in the tubular ultrafiltration membrane and the tubular reverse osmosis membrane: on one hand, intercepted substances attached to the wall surfaces of internal channels of the tubular ultrafiltration membrane and the tubular reverse osmosis membrane are scraped by a first cleaning scraping ring, a second cleaning scraping ring and a spiral scraping ring; on the other hand, intercepted objects attached to the scraping rings are washed and cleaned by means of water flow pressure, the intercepted objects are discharged through the spiral drainage channel, and therefore self-cleaning of the cleaning buoy is achieved.

The invention discloses a rapid tubular induced crystallization reaction process and device for fluorine-containing wastewater, the device comprises a tubular reactor, a crystal sedimentation tank and crystal dehydration equipment, the fluorine-containing wastewater is pumped from a water inlet at one end of the tubular reactor, calcium liquid is pumped from dosing ports at intervals on the tubular reactor along the flowing direction of the wastewater at a set flow rate, and the calcium liquid is pumped from the dosing ports at intervals along the flowing direction of the wastewater; the fluorine-containing wastewater reacts with a calcium agent in the tubular reactor to generate calcium fluoride crystals with the particle size range of 10-80 microns, a mixture is discharged into a crystal sedimentation tank through a water outlet in the other end of the tubular reactor, clear water is discharged from a water outlet in the upper portion of the crystal sedimentation tank, and crystal slurry sinking to the bottom of the crystal sedimentation tank is pumped into a cyclone separator through a crystal discharging pump; large-particle crystals discharged from an outlet in the lower end of the cyclone separator are collected by a crystal collection pool and are regularly discharged into crystal dehydration equipment for dehydration, small-particle crystals discharged from an outlet in the upper end of the cyclone separator flow back to the water inlet end of the tubular reactor, the reactor is small in size and low in investment, and the stability of the calcium fluoride crystal product quality is guaranteed.

The utility model relates to the technical field of semiconductor tail gas treatment, in particular to a plasma tail gas treatment device which comprises a reaction assembly, a cooling pipe, a washing assembly, a water-gas separation assembly and a gas outlet pipe, the washing assembly comprises a water tank and a washing pipe, and the cooling pipe and the washing pipe are both fixedly installed above the water tank; the reaction assembly comprises a reaction cavity, an air inlet pipe and a plasma torch; an annular air plate for inputting combustion air is connected between the reaction cavity and the cooling pipe; spraying pipes for washing gas are arranged in the water tank and the washing pipe; the water-gas separation assembly comprises a water-gas separation pipe and a water-gas separation mechanism. According to the utility model, the plasma moment and the washing assembly are used for carrying out full treatment and spray hydrolysis on process gas, so that water-soluble substances are discharged as wastewater, and the treated gas reaching the standard is discharged to a common affair central system, so that full treatment of waste gas is completed; and the air supplementing mechanism is arranged for secondary air supplementing, and meanwhile, when the plasma moment loses efficacy, the air flow can be increased to dilute the waste gas.

The invention discloses an oil sludge slurry wastewater multi-stage treatment device and method, and relates to the related technical field of sludge and sewage treatment.The oil sludge slurry wastewater multi-stage treatment device comprises a solid-liquid separation box and a drying box, a solid-liquid separation mechanism is installed in the solid-liquid separation box, a drying mechanism is installed on the drying box, and the solid-liquid separation mechanism is connected with the drying box. A top plate is fixed to the drying box, a compaction box is fixed to the top plate, the compaction box is conical, the compaction box communicates with the drying box through an extrusion groove, an extrusion mechanism is installed in the compaction box, and the solid-liquid separation box is connected with the compaction box through a conveying assembly; the constant screw pitch part and the decreasing screw pitch part of the spiral conveying blade are alternately matched, and the sludge is gradually dewatered from bottom to top by combining the containing effect of the pressing groove on the thin sludge and the accurate control of the material fixing baffle on the sludge amount; and the conical structure of the subsequent compaction box and the pressing block perform reciprocating extrusion to further extrude residual water, so that the water content of the sludge is greatly reduced.

The invention relates to the technical field of electric digital data processing, in particular to an intelligent control method and system for boiler wastewater treatment, and the method comprises the steps: obtaining the fluctuation degree of boiler wastewater equipment at a current time node, the fluctuation degree is positively correlated with the abnormal degree of the boiler wastewater equipment at the current time node and is negatively correlated with the dynamic lag time of the boiler wastewater equipment at the current time node; and inputting the fluctuation degree into an improved machine learning model, inputting an operation state of the boiler wastewater equipment at the current time node, and controlling start and stop of the boiler wastewater equipment based on the operation state. The problem that an existing machine learning model is not high in prediction accuracy is solved.

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 relates to the field of direct drinking water of a fusion calculation model, and discloses a double-membrane mixing direct drinking water system and an operation method.The method comprises the steps that online data of a water supply end and a water quality monitoring end are collected for cleaning and time alignment, and a basic working condition data set is formed; the method comprises the following steps: establishing an operation characteristic model comprising water demand prediction, raw water quality prediction and membrane flux characteristic sub-models, calculating double-membrane target water yield and water quality indexes based on the model to generate a control parameter set, evaluating membrane pollution to generate an online cleaning task queue, performing joint simulation to generate a pressure stability control instruction set, and dynamically correcting the model. The conversion from passive response to active pre-judgment of the double-membrane mixing direct drinking water system is realized, and the operation stability, the water quality guarantee capability and the water-saving and energy-saving effects are improved.

The utility model discloses a thermal hydrolysis cyanide breaking device, which relates to the technical field of wastewater treatment and comprises a cyanide breaking reactor, a wastewater heat exchanger, a pipeline mixer, a steam mixer, an instrument control valve and the like. After being heated by the wastewater heat exchanger, the wastewater enters a cyanide breaking reactor, and steam enters a steam mixer to heat the wastewater to a specified temperature and then enters the cyanide breaking reactor. The characteristic that the cyanide aqueous solution is easy to hydrolyze is utilized, so that the cyanide aqueous solution is hydrolyzed at the temperature of higher than 140 DEG C to produce sodium formate and ammonia, the toxicity of cyanide is eliminated, high-temperature wastewater discharged from the cyanide breaking reactor enters the wastewater heat exchanger to exchange heat with wastewater to be treated, and heat is recovered; the pressure of the reactor is controlled through a wastewater heat exchanger outlet wastewater outlet pipeline pressure regulating valve. The cyanide wastewater treatment device is reasonable in design, only a small amount of sodium hydroxide is needed for adjusting the pH of wastewater, no chemical agent needs to be added in other procedures, the cyanide wastewater treatment efficiency is improved, and the cost is saved.

The invention relates to the field of heavy water production, and discloses a compression cycle heat supply heavy water rectification process which comprises the following steps: 1, carrying out primary rectification on feed water; 2, condensing tower top steam by a first-stage cooler to obtain tower top produced liquid, enabling one part of the produced liquid to flow back to a first-stage rectifying tower, discharging the other part of the produced liquid, pressurizing and heating a working medium heated by the first-stage cooler by a compressor, and feeding the working medium into a first-stage reboiler; 3, feeding one part of deuterium-enriched water of the tower kettle into a first-stage reboiler, boiling, returning to the bottom of the rectifying tower, taking the rest part as feed water for next-stage rectification, and returning a working medium cooled by the first-stage reboiler into a first-stage cooler through a first-stage expansion valve to be heated and evaporated; and 4, performing N-stage rectification and purification until the heavy water meets the purity requirement. By utilizing the characteristics that the boiling difference between water and heavy water is extremely small and the condensation heat of the tower kettle is equivalent to the heat source required by the tower kettle, the condensation heat of tower top steam is transferred to the tower kettle through the circulating working medium, the energy consumption is greatly reduced, and a large amount of heat sources can be provided for the system by a small amount of power consumption of the compressor.

The invention relates to the technical field of wastewater treatment, in particular to a catalytic reduction-oxidation reaction system and a wastewater treatment method, and the catalytic reduction-oxidation reaction system is used for treating wastewater. Comprising a water inlet unit, a pH stabilizing unit, a catalytic reduction reaction unit, a Fenton oxidation reaction unit, an aeration stripping unit, a neutralization unit, a coagulating sedimentation unit and an intelligent control system which are connected in sequence, the catalytic reduction reaction unit comprises a catalytic reduction reactor, a filter plate and a reaction layer are arranged in the catalytic reduction reactor, a supporting layer is laid on the filter plate, and the reaction layer is arranged on the supporting layer. The reaction layer is arranged on the filter plate through the supporting layer; the Fenton oxidation reaction unit comprises a Fenton oxidation reactor, the Fenton oxidation reactor comprises a reactor body, and a first rotary mixing aeration disc is arranged at the bottom in the Fenton oxidation reactor. By implementing the application, high-efficiency, stable, low-consumption and intelligent operation of wastewater treatment can be realized.

The invention relates to the technical field of fracturing flow-back fluid treatment, and discloses a fracturing flow-back fluid discharge treatment process and device.The fracturing flow-back fluid discharge treatment process comprises a pretreatment unit, a membrane concentration reduction unit and a deep treatment unit, and the pretreatment unit comprises an oxidation gel breaking reaction zone, an air flotation treatment zone and a magnetic coagulation reaction system; comprising the following steps: S1, the fracturing flow-back fluid firstly enters a regulating tank and then enters an oxidation gel breaking reaction zone; s2, entering the air flotation treatment area; s3, the wastewater firstly enters the hardness removal reaction tank and enters the coagulating sedimentation area for reaction, and the precipitated sludge enters the magnetic powder recovery subunit; s4, water discharged from the pretreatment system enters a membrane concentration decrement unit; s5, the membrane concentrated solution enters a BDD electrooxidation system, organic matter in water is oxidized through a BDD electrode, BDD effluent enters an MVR evaporation system to be evaporated, and MVR evaporation mother liquor enters a mother liquor drying system. According to the invention, the treatment efficiency of the fracturing flow-back fluid can be improved on the whole.

The invention discloses a composite fiber woven net active microbial carrier for treating nitrogen-containing wastewater as well as a preparation method and application of the composite fiber woven net active microbial carrier. The active microbial carrier is formed by weaving titanium wires, rock wool wires, iron-carbon twisted wires and PLA wires, has high biocompatibility and high specific surface area, keeps high mechanical strength, can promote efficient biofilm formation of denitrification sludge, and can promote quick start of a reactor and improve the denitrification effect after successful biofilm formation. According to the application, the requirements of'plastic reduction and plastic forbidding 'are met, the traditional plastic biological filler is replaced, the technical problem that micro-plastic particles are released due to degradation in the use process of the filler is solved, the requirement of green development is met, and remarkable economic and ecological environment values are achieved. Iron wires and carbon fibers in the iron-carbon stranded wires form a primary battery in the reactor, controllable dissolution of iron ions is spontaneously accelerated, driving is not dependent on external potential, and the concept of low carbon and environmental protection is met; additional carbon source adding is reduced through the PLA filaments, and the PLA filaments are further matched with the low-carbon and environment-friendly concept.

The invention discloses an explosive production wastewater pretreatment device and relates to the technical field of wastewater treatment.The explosive production wastewater pretreatment device comprises a flotation tank and a control device, a partition plate is arranged in the flotation tank and divides the interior of the flotation tank into a reaction area and a flotation area, a partition block is arranged in the flotation tank, and the partition block and the inner surface of the side, away from the partition plate, of the flotation tank form a slag receiving area; the conveying mechanism is used for conveying wastewater and additives to the reaction area; the exhaust mechanism is used for discharging small bubbles into the flotation area; the scum scraping mechanism is used for discharging floating scum floating from the flotation area to the scum receiving area; and the cleaning mechanism is used for cleaning the scum attached to the scum scraping mechanism. Through the arrangement of the cleaning mechanism, after the scum scraping mechanism scrapes scum of the flotation area to the scum receiving area, the cleaning plate in the cleaning mechanism can automatically clean scum attached to the surface of the scum scraping soft plate in the scum scraping mechanism, and the scum attached to the surface of the scum scraping soft plate is prevented from entering the flotation area again; and the wastewater treatment effect of the device is improved.

The invention relates to the technical field of non-ferrous metal dust treatment, and provides a pneumatic cyclone tower for explosive aluminum magnesium dust treatment and a dust removal method of the pneumatic cyclone tower. The spraying tower is fixedly mounted at the top of the base, and the inner wall of the center of the spraying tower is rotationally connected with a long rod; the windmill blades are fixedly mounted at the top end of the long rod, and a water sprayer is fixedly mounted on the inner wall of the spray tower. The motor drives the long rod to drive the windmill blades to rotate, the windmill blades are matched with the water sprayer to form spiral rotating airflow, and the collision fusion efficiency of dust and liquid drops is improved; the long rod synchronously drives the scraping plate to scrape dust accumulated on the tower wall, multi-stage filtration is achieved in cooperation with the filter screen, and waste water is recycled through the water return pipeline. The scheme solves the problems that existing equipment is low in dust removal efficiency and difficult to clean, and has the advantages of being efficient, low in energy consumption and easy to maintain.

The invention discloses a sewage treatment process optimization control method and a sewage treatment process optimization control system. According to the method, in-situ fluorescence detection devices are respectively arranged in an anaerobic reactor, an anoxic reactor and an aerobic reactor of an AAO biochemical sewage treatment system; acquiring NAD (P) H and protein fluorescence signals based on the in-situ fluorescence detection device, and acquiring dissolved oxygen, oxidation-reduction potential, pH value and temperature process parameters of the anaerobic reactor, the anoxic reactor and the aerobic reactor based on conventional monitoring equipment; establishing a microbial activity index quantitative rating model based on the fluorescence signal intensity, the dissolved oxygen concentration and the temperature, and optimizing the sewage treatment process based on the microbial activity value of each reactor; the process parameters are accurately controlled, the operation stability of the system is improved, and the remarkable effects of reducing the energy consumption and reducing the indexes of ammonia nitrogen, total nitrogen and total phosphorus in effluent are achieved.

The invention provides an efficient softening and hardness-removing process for a high-hardness water body, which is applied to the technical field of water body purification. The efficient softening and hardness-removing process comprises a pretreatment mechanism, a softening reaction mechanism, a flocculent precipitation mechanism and a sludge closed-loop treatment mechanism which are sequentially connected along a water body treatment flow direction, the efficient softening and hardness-removing process for the high-hardness water body comprises the following raw water treatment steps: S1, treating raw water by virtue of the pretreatment mechanism, so as to obtain ultrafiltration effluent; and S2, the ultrafiltration effluent enters the softening reaction mechanism, and under the control of the electric cabinet control mechanism, chemicals are added for softening and flocculation reaction. The total hardness removal rate can reach more than 90% through accurate addition of the medicament, two-stage pH control and optimization of reaction conditions, which is far superior to that of a traditional resin ion exchange method, the influence of high-hardness water discharge on receiving water is reduced, ecological and health problems caused by excessive hardness of the water are avoided, and the harsh requirements of industrial production and environmental protection on soft water are met.

The invention discloses a hydrogen fuel cell system which comprises a box body and further comprises a Venturi tube arranged at the uppermost part of the box body in a penetrating manner, a tail gas treatment assembly; the hydrogen recycling tank is arranged in the box body, an input pipe of the hydrogen recycling tank is communicated with the output end of the tail gas treatment assembly, an output pipe of the hydrogen recycling tank is communicated with the input end of the hydrogen circulating pump, and the output end of the hydrogen circulating pump is communicated with the hydrogen recycling pipe; a hydrogen dilution assembly; and a wastewater recovery assembly. According to the hydrogen fuel cell system, the problem that a reasonable, environment-friendly and recycling treatment method for tail gas is lacked at present is solved.

The utility model relates to a water quality advanced treatment device, which is provided with a reactor and a filtering device, the effluent of the reactor is connected to the water inlet of the filtering device, the reactor is provided with a reactor shell for accommodating water, an electrode for electrochemical reaction is arranged in the reactor shell, and the water outlet of the reactor is connected to the water inlet of the filtering device. The reactor is characterized in that a plurality of graphite nodules are further arranged in the reactor shell, a reflux pump is arranged in the reactor shell and used for reflux circulation of water in the reactor shell, a filter separation net is arranged at the bottom in the reactor shell, the baffle plate is located above the filter separation net, an inlet of the circulating pipe is located below the filter separation net, and an outlet of the circulating pipe is located below the filter separation net. And a filtering layer is arranged in the filtering device. According to the utility model, the reaction capacity of the electro-catalytic reactor is improved, the preparation cost and the operation cost of the reactor are reduced, and effluent with high purification degree is obtained.