181 results about "Water regulation" patented technology

The invention relates to the technical field of drainage basin water scheduling, and discloses a drainage basin water regulation and control optimization method based on ecological element changes. The method comprises the following steps: deploying a drainage basin monitoring system, and collecting ecological element real-time data such as a hydrological parameter sequence and a remote sensing image; after the data is cleaned and converted, hydrological trend features and spatial distribution features are extracted by adopting a feature learning model, and the hydrological trend features and the spatial distribution features are fused into unified ecological representation through a cross-modal alignment mechanism; inputting the unified ecological representation into a physically constrained neural network prediction model, and outputting a water regimen dynamic prediction value; and finally, based on the predicted value, a water resource regulation and control instruction is generated and executed by using a multi-objective decision algorithm so as to optimize the watershed water circulation process. According to the method, feature extraction comprehensiveness is improved through multi-source data fusion and cross-modal analysis, prediction reliability is enhanced in combination with physical constraints, reasonable allocation of water resources is achieved by means of multi-target decision, the ecological condition of a drainage basin can be improved, and the water utilization efficiency is improved.

The invention discloses an indoor water tank sediment pushing characteristic acquisition system and method, the system mainly comprises a water tank main body, a buffer unit, a drainage adjusting unit, a sediment throwing device, an imaging unit, an adjustable support and a data processing unit, and according to the method, non-contact data acquisition is carried out through a high-definition camera and a three-dimensional terrain measuring instrument; automatic identification, parameter extraction and migration speed calculation of landforms such as sand waves are achieved, the sediment bed surface is not touched in the whole process, damage to the bed surface form caused by traditional contact type measurement is eliminated, and the authenticity and reliability of data are ensured. Meanwhile, the buffer design of the combination of the flow slowing plate and the multi-stage water baffle is adopted, the kinetic energy of water flow is effectively dissipated through the graded water outlet structure, the impact force of injected water flow is greatly reduced, the bed surface is prevented from being scoured in the initial water injection stage, and the stability of the initial test condition is powerfully protected.

The invention provides a saline-alkali soil underground water regulation and control method and device, electronic equipment and a storage medium, and relates to the technical field of land governance. Inputting the first historical monitoring information into a pre-constructed prediction model to obtain a predicted value of soil salinity in a future time period; the predicted value of the soil salinity is input into the analysis model, and the target water level of underground water in the future time period is obtained; wherein the target water level of the underground water is used for restraining the target value of the soil salinity to be smaller than a preset salinity threshold value and the target value of the soil humidity to be larger than a preset humidity threshold value; generating a water level adjusting strategy based on the target water level of the underground water, and controlling the opening or closing of the water pump based on the water level adjusting strategy. According to the method, the soil salinity in the future time period is predicted by acquiring the saline-alkali soil monitoring information, so that the target water level of the underground water is obtained, the water level regulation strategy is generated, and the perspectiveness, dynamic nature and stability of underground water level regulation are ensured.

The application discloses an indoor water tank sediment starting speed measurement system and method, and aims at solving the technical problem of sensor disturbance to a flow field and influence on data accuracy in the prior art measurement method.The technical scheme core is that the non-contact measurement characteristics of the PIV technology are applied to the whole process from flow field construction to data acquisition.The device is mainly composed of an imaging unit, a laser illumination unit, a movable sliding frame, a water flow adjusting unit and a buffer plate.Optical measurement is performed through the imaging unit and the laser illumination unit, and physical sensors do not need to be arranged in the flow field, so that the interference of the measuring instrument on the water flow structure and the sediment starting process is fundamentally avoided.The integrated movable sliding frame integrates the sediment laying, particle throwing and measurement functions, and is convenient for quickly positioning a test area;in combination with the buffer plate and the water inlet and drainage adjusting unit, a gradually changing flow field from weak to strong can be accurately and stably simulated.

The invention relates to the technical field of irrigation saline-alkali soil improvement, in particular to an irrigation saline-alkali soil improvement method based on straw adsorption and water conservancy regulation, which comprises the following steps: acquiring multi-depth soil parameters and surface meteorological data of an irrigation area, and establishing a soil water-salt dynamic migration coupling model; calculating a vertical moisture flux and a plowing layer net salt flux by using the model; calculating an accumulated salt return risk index to obtain a salt return risk grade; building a straw decomposition index by using multi-depth soil parameters; on the basis of the straw decomposition index, updating the soil water and salt dynamic migration coupling model; in response to the fact that the salt return risk level is a high risk, constructing an optimization objective function; resolving and optimizing the objective function to obtain an optimal irrigation strategy; outputting an optimal irrigation strategy to an irrigation control system, and feeding back the optimal irrigation strategy to the model as an irrigation rate; according to the invention, threats can be identified before a high-risk salt return event occurs, the timeliness and initiative of regulation and control are improved, and the balance between treatment benefits and economic cost is realized.

The invention relates to the technical field of nuclear power plant automatic control and fluid regulation, in particular to a nuclear power plant condensation water regulating valve automatic control system which comprises a sensor data acquisition and synchronization module which acquires and synchronizes parameters in a nuclear power plant condensation water system; the reinforcement learning control module reads parameters of the sensor data acquisition and synchronization module, and generates a regulating valve control strategy by using a reinforcement learning algorithm; the real-time prediction and control decision module controls and predicts the opening degree of the condensed water regulating valve according to the regulating strategy of the reinforcement learning control module; and the anomaly detection and safety protection module reads the parameters acquired by the data acquisition and synchronization module, monitors the parameters and gives an alarm according to an anomaly monitoring result. According to the system, valve oscillation and unreasonable adjustment in a traditional method can be avoided while a valve adjustment strategy is learned and optimized in real time, and the precision and stability of condensed water flow adjustment are improved.

The invention discloses a treatment method of strong complexing copper wastewater, which comprises the following steps: adjusting the pH value of the strong complexing copper wastewater, adding a complexing breaking agent, stirring and reacting until the color of the solution becomes brownish black, then adding ferric chloride for deep purification, and finally adjusting the pH value back for flocculating settling and solid-liquid separation. And finally, obtaining clear liquid with the effluent copper ion concentration stably lower than 0.5 mg / L and ferrite precipitate-sludge with stable chemical properties. The method is simple and low in cost, secondary pollution is avoided, the treatment difficulty and environmental risks of the strong complexing copper wastewater and the sludge obtained through treatment are greatly reduced, and the method has wide application prospects.

The invention relates to the technical field of gas purification, and discloses an organic waste gas filtering and purifying device which comprises a tank body, a smoke inlet is formed in the bottom of the tank body, a water cabin is arranged on the outer wall of the tank body, a water pumping pipe is fixedly connected to the top of the water cabin, and a water pump is arranged on the circumferential surface of the water pumping pipe. A water adjusting mechanism is arranged in the tank body, the main shaft is rotatably connected to the interior of the tank body, a smoke outlet is formed in the outer wall of the tank body, the feeding pipe is fixedly connected to the inner wall of the feeding bin, and the small filter plate is fixedly connected to the inner wall of the bottom of the feeding bin. The rotating cabin rotates to drive the water spraying pipe to rotate, and the water spraying pipe rotates to increase the spraying area of sprayed water, so that a better purification effect is achieved.

The invention discloses a water transfer project risk cascade propagation and risk assessment method and system based on a multi-level topological structure, and the method comprises the steps: obtaining a water transfer project topological network, and generating a node comprehensive risk vector of each node based on multi-source operation data; constructing a basic risk propagation matrix according to the physical connection relationship, and performing structured modulation on the basic risk propagation matrix based on the node comprehensive risk vector to generate a comprehensive propagation operator; performing cascade propagation iterative evolution on the node comprehensive risk vector based on the comprehensive propagation operator, and continuously calculating network dynamics stability characteristic parameters of the comprehensive propagation operator in the evolution process; when it is judged that the system is in a divergent phase state according to the parameters, a comprehensive propagation operator is reconstructed, iterative evolution continues till convergence, and steady-state risk distribution is obtained; and outputting a comprehensive risk assessment result of the system based on the steady-state risk distribution. The method can improve the operation safety management and control capability of the water regulation project under complex operation conditions and external disturbance conditions.

The invention discloses a watershed ditch and pond-road low-cost ecological sand control method based on hydrological connectivity, which belongs to the field of ecological environment protection and mainly comprises the steps of data acquisition, DEM data correction, confluence network construction, hydrological structure connectivity identification, SWAT model construction, key source area identification, scene analysis and cost benefit analysis. Under the influence of a ditch pond-road system, the key source area identification technology based on hydrological structure connectivity and the drainage basin key source area ditch pond road low-cost water regulation and soil conservation method achieve the dual purposes of reducing the water and soil regulation and control cost and continuously improving the ecological benefit by identifying the key source area.

The invention provides a recirculating aquaculture accurate regulation and control method and system based on graph network water resource management, and relates to the technical field of fishery regulation and control methods, and the method comprises the steps: sequentially carrying out the high-frequency synchronous collection processing and Kalman filtering noise fusion inhibition processing of collected multi-dimensional data; obtaining a time-space aligned and standardized multi-modal water quality time sequence data set; defining the core water quality parameter type as a node of the dynamic heterogeneous graph to obtain a dynamic heterogeneous graph structure with the edge weight containing the time delay mutual information entropy and the node containing the multi-dimensional characteristics; processing the dynamic heterogeneous graph structure by adopting a gated space-time convolution graph neural network to obtain a multi-dimensional water quality state prediction matrix including potential abnormal probability, water quality risk level, water circulation efficiency and biological fitness; a multi-target constraint reinforcement learning algorithm is adopted for processing, and accurate fishery circulating water regulation and control are achieved. The water resource consumption cost is remarkably reduced, and key technical support is provided for water saving and emission reduction of land-based industrial aquaculture.

The invention provides a method, device and equipment for controlling the steam drum water level of a gas-steam combined cycle unit. The method comprises the steps that the opening degree of an inlet guide vane of a gas compressor, the turbine exhaust temperature, the feed water flow, the steam flow, a steam drum water level set value and the steam drum water level are obtained in real time; according to the opening degree of an inlet guide vane of a gas compressor and the exhaust temperature of a turbine, the gas turbine side feed-forward control quantity is determined; according to the steam drum water level set value and the steam drum water level, a first PID controller is adopted to determine an original feed water flow set value; according to the feed water flow, the steam flow, the original feed water flow set value and the gas turbine side feed-forward control quantity, a second PID controller is adopted to determine a first feed water adjusting valve opening instruction; and adjusting the opening degree of the feed water adjusting valve according to the first feed water adjusting valve opening degree instruction, and controlling the steam drum water level of the gas-steam combined cycle unit. According to the invention, reliable guarantee is provided for safe and efficient operation of the unit through a cooperative regulation mechanism of the gas turbine side feed-forward control quantity and three-impulse control.

The invention relates to the technical field of wastewater treatment, in particular to a polysaccharide production wastewater treatment method and system.The treatment method comprises the steps that first wastewater with the COD content being Xmg / L and second wastewater with the COD content being Ymg / L are collected, and X is larger than Y; the first wastewater and the second wastewater are mixed according to a preset proportion to form first mixed wastewater, and the pH value of the first mixed wastewater is adjusted and homogenized; the adjusted first mixed wastewater flows into an anaerobic tank to be subjected to primary anaerobic treatment, and second mixed wastewater is generated; the second mixed wastewater flows into a reactor to be subjected to secondary anaerobic treatment, and third mixed wastewater is generated; the third mixed wastewater flows into an aerobic tank to be subjected to aerobic treatment, and fourth mixed wastewater is generated. Therefore, stable, efficient and low-cost treatment of the high-concentration polysaccharide production wastewater is realized.

The utility model belongs to the technical field of dry quenching waste heat power generation, and particularly relates to a dry quenching waste heat power generation deoxygenization water supply system. Comprising EDI (electrodeionization) equipment, a steam extraction condensing steam turbine or a pure condensing steam turbine, a condenser, a condensate pump, a demineralized water tank of a dry quenching boiler water supply pump station, a deoxygenization water supply pump, a deoxygenization water supply regulating valve group, a three-way valve, a water-water heat exchanger, a water supply preheater and a thermal deaerator. The utility model has the beneficial effects that a desalting water tank and a secondary desalting water pump of a desalting water station are omitted; the fixed pressure difference of the regulating valve is used as main regulation, and the three-way valve is used as auxiliary regulation to ensure normal operation of sampling equipment; after deoxygenated water supply is heated by the water-water heat exchanger, one part of sewage is fed into the dry quenching body circulating water tank for normal production, and the other part of sewage is fed back to a sewage discharge well, so that the temperature of the sewage is reduced, heat and water resources are fully utilized, and meanwhile, the adverse effect of white smoke generated by sewage discharge on a drainage system and the environment is eliminated.

The utility model provides a mechanical adjustable constant-temperature water mixing faucet which comprises an outer shell, an inner cavity is formed in the outer shell, a water mixing adjusting valve capable of rotating relative to the outer shell and a temperature controller capable of sliding in the outer shell are sequentially installed in the inner cavity, and a spiral bimetallic strip is arranged in the temperature controller. The sliding temperature controller enables the water mixing adjusting valve to be connected with the outer shell in a coupling mode, the temperature controller drives the water mixing adjusting valve to rotate to adjust the water inlet proportion of the water inlet pipeline based on deformation of the bimetallic strip, the water mixing adjusting valve and the spiral bimetallic strip are assembled and disassembled in a sliding connection mode, and a physical switching mechanism of a temperature control mode and a temperature adjusting mode is formed. The water temperature can be adjusted at will according to individual requirements of users within the allowable temperature range, and the water mixing adjusting valve is driven to rotate to control the inlet and outlet proportion of cold water and hot water based on thermal expansion of the bimetallic strip.

The application discloses a farmland drainage system, which comprises a water collecting well for collecting redundant water in farmland, a water pumping and draining system and a drainage pipeline, the water pumping and draining system comprises a solar-powered submersible pump, and the end of the drainage pipeline is connected with an open ditch; the system is characterized in that the system further comprises a siphon supplementary drainage system, the siphon supplementary drainage system comprises a siphon water inlet pipe and a water outlet combination device, the siphon water inlet pipe is connected with the drainage pipeline, and the water outlet combination device is arranged at the end of the drainage pipeline; the water outlet combination device comprises a water outlet adjusting device and a water tank, the water tank is fixed at the port of the drainage pipeline, and the drainage pipeline extends into the water tank; the water outlet adjusting device is sleeved outside the drainage pipeline and comprises a water tank water outlet cover which can move axially along the drainage pipeline, and the water tank water outlet cover is pressed at the opening of the water tank through a spring; when the water pressure of the drainage pipeline is enough, the water tank water outlet cover is pushed to move upwards to compress the spring, the water tank is opened, and water is drained.

The present application relates to the technical field of aquaculture circulating water control, and discloses a sea horse aquaculture circulating water temperature and quality intelligent collaborative control system and method, which is based on the data of the change amount of the aquaculture water to perform independent prediction analysis on the source type of the sea horse aquaculture water replacement, realizes intelligent and reliable judgment of whether the sea horse aquaculture water replacement is from internal circulating water or external circulating water based on the theoretical change of the sea horse aquaculture water amount, and constructs sea horse aquaculture water regulation information based on the data processing of the sea horse aquaculture water replacement source, the water amount information of the replacement water, and the water temperature and water quality update information of the aquaculture water. Meanwhile, the water body update equipment is independently and reliably controlled by combining the aquatic product aquaculture management platform to perform the replacement of the aquaculture water body and the water temperature and water quality regulation operation, the precise regulation of the water body, the water temperature and the water quality in the sea horse aquaculture process is realized, and the efficiency and accuracy of the sea horse aquaculture management are improved.

An iron bucket plastic bucket hazardous waste resourceization sewage treatment system based on segmented oxidation and dynamic regulation, strong alkali wastewater enters the first artificial grid, the first oil separation tank, the strong alkali water adjusting tank, the PH adjusting tank, the demulsification tank, the first coagulation sedimentation tank, the sand filter and the reuse water tank in sequence through the water inlet; the comprehensive wastewater enters the physical and chemical pretreatment unit, the hydrolysis acidification tank, the nutrition tank dosing tank, the anaerobic UASB tank, the AO biochemical tank, the secondary sedimentation tank, the Fenton advanced oxidation unit and the biological aerated filter in sequence through the water inlet, the sludge inlets of the first coagulation sedimentation tank, the anaerobic UASB tank, the secondary sedimentation tank and the Fenton advanced oxidation unit are connected with the sludge tank inlet in sequence, the utility model discloses scientific and reasonable design, multi-mode switchable process flow, 18% lower than traditional process, energy consumption reduces 25% at low load; effectively reduce the water treatment cost of 0.8-1.2 yuan per ton, and the social and economic benefits are remarkable.

The utility model relates to the technical field of laser heat dissipation, and discloses a flow-controllable water-cooled laser heat dissipation device. The device comprises a water cavity, two water outlet hole channels are formed in one side of the water cavity, and the two water outlet hole channels are both communicated with a water inlet hole channel; the two water outlet regulating valves are respectively arranged at the two water outlet hole channels and are used for controlling the water outlet flow at the two water outlet hole channels; the water outlet rotating screw hole is formed in the water outlet hole channel, is perpendicular to the water flow direction of the water outlet hole channel, and penetrates to the external environment from the water outlet hole channel; and the gas pressure reducing groove extends from the water outlet rotating screw hole to the direction opposite to the external environment and is used for balancing the air pressure and the water pressure at the water outlet hole channel in the adjusting process of the water outlet adjusting valve. By arranging the water outlet adjusting valve and the gas pressure reducing groove at the water outlet hole channel, the flow of water flow can be effectively controlled, so that heat dissipation is performed on part of the position of the laser in a targeted manner, the heat dissipation effect of the laser is improved, and meanwhile, a water source is buffered to avoid impacting the laser.

The present application relates to a kind of thermal power generating unit control technical field, is a kind of thermal power generating unit condensate pump automatic control system energy-saving optimization method and device, the former includes determining by deaerator water regulating valve control condensate pump outlet header pressure, then judge deaerator water regulating valve whether full open;In response to no, reduce condensate pump outlet header pressure set value, until deaerator water regulating valve full open;In response to yes, judge current deaerator water regulating valve opening degree whether with condensate pump energy-saving operation match;In response to no, increase condensate pump outlet header pressure set value, until current deaerator water regulating valve opening degree with condensate pump energy-saving operation match.The present application is by lifting the opening degree of deaerator water regulating valve, reduce the throttling loss caused by deaerator water regulating valve opening degree low, simultaneously make the throttling loss of deaerator water regulating valve minimum and condensate pump outlet header pressure maximum, in reducing energy loss while guaranteeing the economy of condensate pump operation.

This invention discloses a water purification device, including a filtration unit and a reverse osmosis filter. The filtration unit includes a housing and an ultrafiltration membrane filter element and an adsorption filter element installed inside the housing. The housing is provided with a raw water inlet, an adsorption outlet, and an ultrafiltration outlet. Water filtered by the ultrafiltration membrane filter element is configured to flow out through the ultrafiltration outlet and also configured to flow out through the adsorption outlet after being filtered by the adsorption filter element. The reverse osmosis filter includes a raw water inlet, a pure water inlet, and a wastewater inlet. The adsorption outlet is connected to a water tap via a domestic water pipe. The ultrafiltration outlet is directly or indirectly connected to the raw water inlet. The pure water inlet is directly or indirectly connected to a drinking water pipe, which is connected to the water tap. An eighth control valve is provided on the domestic water pipe, configured to regulate the water flow and on / off state in the domestic water pipe. This invention can avoid clogging of the ultrafiltration membrane filter element, realize the mixing of domestic water and pure water, and adjust the TDS of the mixed water.

The invention provides a water resource optimal configuration method considering excess water supply regulation and control and hierarchical constraint, and the method comprises the steps: obtaining water resource configuration parameter data, constructing a basic water resource optimal configuration model, constructing a hierarchical constraint system, constructing a multi-target water resource optimal configuration model, and solving the water resource optimal configuration model. And obtaining an optimal water resource allocation scheme. According to the method, on the premise that regional water consumption red line constraints are guaranteed, collaborative optimization of economic benefits, water shortage control and water consumption rationality is achieved, scientificity, engineering performability and management adaptability of a configuration scheme are improved, and support is provided for actual water resource scheduling and management decision making.

This utility model proposes an electrical monitoring and verification water conservancy dispatch control device, belonging to the field of water conservancy dispatch control technology. It includes a protective shell with a fixing rod installed at the bottom. The fixing rod has an L-shaped cross-section. A replacement assembly is installed inside the protective shell for replacing and cleaning sensor probes. The replacement assembly includes a fixing plate bolted to the inner wall of the protective shell. A micro motor is bolted to the top of the fixing plate, and a first gear is installed at the output end of the micro motor. A first lead screw is rotatably mounted on the top of the protective shell, and a second gear is sleeved on the outside of the nut of the first lead screw. A second lead screw is rotatably mounted on the top of the protective shell, and a third gear is sleeved on the outside of the second lead screw. This utility model, by providing a replacement assembly, allows for the cyclical replacement of two sets of sensor probes, and the sensor probes can be self-cleaned without stopping the machine.

The invention relates to the technical field of environmental protection, in particular to an energy-saving biological deodorization spray water adjusting device integrating real-time monitoring of pH value. Comprising a trickling filter body, and a liquid storage tank, a multi-union pump, an air inlet valve and a water replenishing valve are arranged on the side wall of the bottom of the trickling filter body. The device can monitor the PH value, the salt concentration, the liquid level height and the like in the circulating water tank, when the PH value is alkaline or acidic, the acid solution or the alkaline solution pre-stored in the liquid storage tank is pumped into the circulating water tank by controlling the multi-union pump, hydrogen ions or hydroxyl ions are provided for PH value adjustment, and the pH value is adjusted. The water in the circulating water tank is always kept in a neutral state, and when the salt concentration is too high, the salt concentration is reduced in a manner of supplementing water and diluting or discharging supplemented water in combination with the height of the liquid level, so that the neutral growth environment of microorganisms is accurately maintained, the deodorization efficiency is improved, frequent water discharging and supplementing can be avoided, and the waste of water resources is reduced.

The application provides a circulating water aquaculture precision regulation method and system based on a graph network water resource management, relates to the technical field of fishery regulation methods, and comprises sequentially performing high-frequency synchronous collection processing and Kalman filter noise fusion suppression processing on collected multidimensional data to obtain a spatiotemporally aligned and standardized multimodal water quality time series dataset; defining a core water quality parameter type as a node of a dynamic heterogeneous graph to obtain a dynamic heterogeneous graph structure with edge weight containing time delay mutual information entropy and nodes containing multidimensional features; processing the dynamic heterogeneous graph structure by using a gated spatiotemporal convolutional graph neural network to obtain a multi-dimensional water quality state prediction matrix including potential anomaly probability, water quality risk level, water cycle efficiency and biological fitness; and processing by using a multi-objective constraint reinforcement learning algorithm to realize precise fishery circulating water regulation. The application significantly reduces water resource consumption cost and provides key technical support for water saving and emission reduction of land-based industrialized aquaculture.

Based on the reclaimed water low-source high-peak water supply technology under the AI digital condition, the system breaks through the limitation of a centralized water supply mode of a traditional reclaimed water system by surrounding five core functions of multi-water-source collaborative water taking, intelligent pipe network scheduling, distributed water storage adjustment, nearby multi-water-quality water supply and automatic control system linkage; the modular and distributed design concept is innovatively introduced, and the AI algorithm and the Internet of Things sensing technology are combined, so that intelligent linkage and on-demand adjustment of the whole process from water taking, processing, conveying, water storage to water supply are achieved.

The utility model belongs to the technical field of faucets, and particularly relates to a faucet capable of discharging water stably, a partition plate is arranged in a faucet body and divides the interior of the faucet body into a first water outlet channel and a second water outlet channel, and a through hole communicated with the first water outlet channel and the second water outlet channel is formed in the partition plate. A connecting hole is formed in the top of the faucet body, a locking hole communicated with the first water outlet channel is formed in the bottom of the faucet body, a first water outlet communicated with the second water outlet channel is formed in the bottom of the faucet body, the through hole, the connecting hole and the locking hole are arranged on the same axis from top to bottom, and an adjusting assembly is arranged on the connecting hole. The adjusting assembly can select different water outlet channels to adjust water outlet according to actual requirements, adjustment is easy, convenient and labor-saving, the problem of unstable water flow caused by factors such as water pressure fluctuation is effectively solved, and stable water outlet is achieved.

To provide a processing device capable of reducing power consumption.SOLUTION: A processing water circulation path 8 of a processing device 2 includes: processing water supply means 24 that supplies processing water to a processing tool; a dirty tank 26 for waste fluid; filtration means 28 that filters the waste fluid to make the waste fluid into fresh water; a clean tank 30 for fresh water; and processing water regeneration means 32 that purifies the fresh water into processing water. A temperature controlling water circulation path 10 includes: temperature controlling water adjustment means 58, a temperature controlling water feeding path 60, and a temperature controlling water return path 62. To the temperature controlling water return path 62, a clean tank path 72 communicating with the clean tank 30 and a fresh water introduction path 74 for introducing fresh water in the clean tank 72 to the temperature controlling water return path 62 are connected. The processing water supplied to the processing tool is scattered to be mist, the waste fluid is cooled by evaporation heat, passes the dirty tank 26 and the filtration means 28, and is stored in the clean tank 30, the fresh water in the clean tank 30 is used by the processing water regeneration means 32 and the temperature controlling water adjustment means 58, and thereby power consumption is reduced.SELECTED DRAWING: Figure 2

The invention belongs to the technical field of industrial sewage treatment, and particularly relates to a membrane wastewater treatment method which comprises the following steps: S1, starting a lifting pump of a wastewater adjusting tank, and opening an adjusting valve when water flow is detected; s2, hydrolyzing and acidifying macromolecular organic matters in the wastewater in an anaerobic section; s3, the activated sludge settles in the sludge area, and part of the activated sludge flows back to the anaerobic reactor of the system; s4, the denitrification biological filter is filled with ceramsite filler with high specific surface area, and a three-dimensional biological membrane is formed in the whole filling area; s5, by means of ozone, active free radicals with high oxidation capacity are generated through a physical or chemical means; s6, activated carbon with the particle size of 0.6-0.8 mm is used as filter filler; s7, adding chemical agents of iron series and aluminum series into the high-density sedimentation tank, and reducing suspended solids and turbidity of effluent through the V-shaped filter tank; and S8, the water vapor cleaning time is prolonged, and the exhaust time is prolonged after cleaning is completed. According to the method, biochemistry is mainly utilized, and composite diversified biochemical treatment is developed in an integrated manner, so that the emission limit value of the discharged water reaches the standard.

The application provides a multi-stage evaporator system and a refrigerant water regulation method thereof, comprising a lower evaporator and an upper evaporator, wherein a first spray pipe for introducing refrigerant is arranged above a second heat exchange tube bundle in the upper evaporator; a plurality of refrigerant outlet pipes are arranged at the bottom end of the side of the upper evaporator in the height direction, each of the refrigerant outlet pipes is communicated with the lower evaporator, and a valve is arranged on each of the refrigerant outlet pipes except the topmost refrigerant outlet pipe; the multi-stage evaporator system can fully utilize the storage space of the water tray of the upper evaporator, eliminates the adverse effects of refrigerant overflow, liquid deficiency and the discontinuous operation of the refrigerant pump caused by the weight change of the refrigerant water due to the working condition fluctuation, and eliminates the load deviation caused by the enthalpy difference of the refrigerant water of the two-stage evaporator temperature and the spray of the refrigerant pump from the lower evaporator to the two-stage evaporator; and the vibration or noise problem caused by the connecting pipe of the refrigerant water of the upper evaporator to the lower evaporator is also eliminated.