847 results about "Water production" patented technology

The invention relates to the technical field of production line control, and discloses a drinking water production line water quality real-time monitoring and intelligent adjusting system based on the Internet of Things. Registration equipment is unified with units, and NTP time synchronization is performed to eliminate deviation; the shift / CIP calibrates the zero range, and the EWMA monitors the drift weight drop; constructing state vectors containing IDs / batches, and performing auditing and warehousing; median / bilateral filtering denoising is carried out, and grid interpolation is unified; sliding window multi-scale aggregation is carried out, and self-adaptive sampling is carried out according to curvature and events; normalizing and interpolating a near-time training window; estimating indexes difficult to measure by a soft sensor, and depicting residual chlorine by a mechanism model; and carrying out uncertainty weighted fusion, and outputting estimation and intervals and auditing. According to the method, the whole process of real-time monitoring, quick response and traceable compliance is realized, the risk caused by chemical shortage or ratio error and environmental protection constraint is remarkably reduced, the capacity loss caused by cleaning and plan conflict is reduced, and the factory water quality stability and the treatment transparency are improved.

According to the efficient water treatment system based on the reverse osmosis membrane and the control method provided by the invention, gradient anti-pollution membrane arrangement and reconfigurable intelligent waterway design are creatively combined, so that a foundation is laid for high-flux and low-pollution operation from a physical structure; meanwhile, a full-closed-loop intelligent control system is constructed, and by fusing fuzzy logic, an optimization algorithm and a neural network prediction model, the system can integrate multi-dimensional information such as inlet water quality, membrane pressure difference and water yield, judge pollution risks in real time and adaptively and seamlessly switch among a high recovery mode, a segmented flushing mode and a prediction cleaning mode, so that the system is high in recovery efficiency and high in reliability. Meanwhile, parameters such as pump frequency and valves are dynamically optimized to find an optimal balance point of recovery rate and energy consumption; according to the invention, the recovery rate can be stably improved, the membrane pollution rate is greatly reduced, the chemical cleaning period and the service life of the membrane element are prolonged, and finally, the comprehensive operation and maintenance cost of the system is remarkably reduced while the water treatment efficiency and the water quality safety are improved.

The invention relates to the technical field of industrial control, and discloses a soda water production line intelligent control method and system based on the Internet of Things, and the method comprises the steps: obtaining a backpressure valve reference pressure value according to the obtained real-time dynamic data through employing a pre-constructed carbonation digital twin model, and calculating the backpressure valve reference pressure value according to the backpressure valve reference pressure value; the carbonation digital twinning model is set to obtain a theoretical pressure value by adopting the Henry law according to the target gas content and the real-time data of the mixed liquid temperature, and obtain a predicted pressure value by adopting the pre-constructed pressure prediction model according to the target gas content, the real-time data of the raw material liquid injection flow and the real-time data of the carbon dioxide injection flow; further obtaining a reference pressure value of the back pressure valve; according to a first difference value between the target gas content and the real-time gas content of the mixed liquid, a first feedback correction algorithm is adopted to correct the reference pressure value of the back pressure valve, and a dynamic pressure control instruction of the back pressure valve is obtained; and controlling the back pressure valve to execute the back pressure valve dynamic pressure control instruction. According to the method, the taste stability of the soda water is effectively improved.

The invention relates to the technical field of compressor temperature control, and discloses a compressor temperature control system capable of preventing generation of condensate water, which comprises a sensing module, an execution module and a controller. The sensing module is used for collecting air temperature, relative humidity, system working pressure and circulating oil temperature parameters of the compressor in real time. The controller is configured to calculate the current pressure dew point of the system based on the air temperature, the relative humidity and the working pressure of the system; the pressure dew point serves as a floating lower limit, a preset system optimal working temperature upper limit serves as a fixed upper limit, and a dynamic safe working interval is determined; finally, a cooling unit and a heating unit in the execution module are cooperatively controlled to work according to the relation between the circulating oil temperature and the dynamic safety working interval. By establishing the dynamic safety lower limit changing along with the working condition, the problem that the compressor is prone to generating condensate water under the high-humidity or low-load working condition to cause oil emulsification is effectively solved, and accurate and energy-saving temperature control is achieved.

The utility model relates to the technical field of wastewater retreatment, and provides an ion exchange water production regeneration wastewater pretreatment device. The ion exchange water-making regenerated wastewater pretreatment device comprises a normal-temperature crystallization reactor, a sedimentation tank, a filtering assembly, an ion exchange assembly and a strong oxidizer. The normal-temperature crystallization reactor is used for crystallizing and separating part of impurities in the regenerated wastewater; the settling pond is communicated with the normal-temperature crystallization reactor and is used for settling and purifying the crystallized regenerated wastewater; the filtering assembly is communicated with the settling pond and is used for filtering the settled and purified regenerated wastewater; the ion exchange assembly is communicated with the filtering assembly and is used for removing calcium and magnesium ions in the regenerated wastewater; the strong oxidizer is communicated with the ion exchange assembly and is used for killing microorganisms in the regenerated wastewater. The device disclosed by the utility model can be used for treating and separating most impurity ions except sodium chloride and sodium sulfate in the ion exchange water-making regeneration wastewater.

The invention relates to the technical field of image data processing, in particular to an MBR water production turbidity detection method and system based on image processing, and the method comprises the steps: obtaining an original image of an MBR water production pipeline, and extracting a water body region by using a mask matrix; calculating the local contrast of the pixel points relative to the neighborhood, constructing a suppression weight based on the noise standard deviation of the image sensor, and weighting the local contrast to obtain scattering response intensity; obtaining the texture disorder degree based on the ratio of the geometric mean value to the arithmetic mean value of the feature values of the structure tensor; the particle confidence is obtained based on the scattering response intensity and the texture disorder degree, the weighted particle confidence is obtained through weighting of a Sigmoid function, and the average value of the particle confidence is calculated to serve as the comprehensive turbidity so as to evaluate the water production state. The scattering response intensity and the texture disorder degree are fused, a weight suppression and soft threshold mechanism is introduced, pipe wall scratches and thermal noise interference are reduced, and the detection accuracy is improved.

A reservoir fluid can be produced from a subterranean formation. The reservoir fluid can include water and hydrocarbons such as oil. It is oftentimes desirable to limit the amount of water that is produced, so a higher ratio of hydrocarbons can be produced. Portions of the subterranean formation can have an initial permeability to water. A relative permeability modifier (RPM) package including a surfactant and a polymer can be used in these portions to restrict or prevent water from being produced. The relative permeability modifier package can increase the hydrophobicity of the portion that allows the hydrocarbons to flow through while substantially limiting the amount of water. The relative permeability modifier can coat the surfaces of substances in the formation whereby the permeability to an aqueous fluid is reduced from the initial permeability. The formation can be a high-temperature formation of 230° F. (110.0° C.) or greater.

The invention relates to the technical field of direct drinking water treatment, and provides a direct drinking water purification system and a dynamic regulation and control method, a pollution load index is calculated by combining an inflow water quality parameter and a pre-membrane pollution index, a historical performance attenuation degree is extracted based on historical water production data, and accurate and comprehensive basic data support is provided for subsequent regulation and control; through time sequence analysis on historical water consumption data, water consumption feature vectors are identified, and difference scenes are divided, so that a regulation and control strategy can adapt to water consumption requirements of different scenes in a targeted manner; on the basis of a near-end strategy optimization algorithm, a state vector is constructed by a pollution load index, an attenuation risk index and a water use feature vector, the quality of produced water, the operation energy consumption and the service life of a nanofiltration membrane are taken into optimization targets, and meanwhile, a membrane pressure difference constraint is embedded; by regularly recording simulation verification data and dynamically optimizing a near-end strategy optimization algorithm and a long-short-term memory network, the regulation and control effect is prevented from being attenuated along with the operation time, and the stability and accuracy of long-term operation of the system are ensured.

The utility model discloses an efficient particle membrane filtering device. The efficient particle membrane filtering device comprises a skid structure, the skid structure comprises a plurality of particle film high-speed filters, the particle film high-speed filters are arranged in a single-branch, multi-branch and grouped mode in a skid, each particle film high-speed filter comprises a column type filter assembly, a water inlet multi-way valve and a water production multi-way valve, and a valve, a pipeline, an instrument and an electric control system are further arranged in the skid. The filter operates according to the sequence of operation, waiting, backwashing and commissioning, solves the problem that a conventional filter is large in backwashing water amount, easy to be polluted and blocked and long in process, can realize high-flow-rate, high-precision and high-stability filtration, can treat large-flux incoming water, and reduces the use of filter materials; a column type skid structure is adopted, the occupied area of the filter is greatly reduced, the technological process is shortened, flexible and free permutation and combination are achieved, various complex water qualities can be dealt with, and the requirement for the inlet water quality is relatively wide.

The invention is applicable to the technical field of new energy materials and water treatment, and provides solar-driven multifunctional composite hydrogel and a preparation method and application thereof, the multifunctional composite hydrogel comprises dual-network hydrogel, a nanofiber skeleton and functional particles; the double-network hydrogel is formed by interpenetrating and cross-linking a polyelectrolyte hydrogel and a temperature-sensitive hydrogel; the functional particles are loaded in a three-dimensional porous network structure formed by the double-network hydrogel and the nanofiber skeleton. When the device floats on the surface of a water body, efficient solar interface evaporation water production, stable power generation based on the water photovoltaic effect and efficient adsorption removal of nitrogen and phosphorus nutritive salt in the water body can be synchronously achieved under illumination, and therefore algae growth is inhibited. According to the invention, the integrated collaborative management of water collection, energy conversion and ecological restoration is realized, the preparation process is simple, the environmental adaptability is high, and an innovative scheme is provided for solving the distributed water-energy supply and ecological environment problems in coastal, island and other regions.

A preparation method of the efficient solar evaporator comprises the steps that (NH4) Mo7O24. 4H2O and CH4N2S are weighed and dissolved in water, chitosan biochar is added, stirring reaction is conducted, washing and drying are conducted after cooling, and MoS2-chitosan biochar is prepared; and weighing sodium alginate, dissolving the sodium alginate in water, adding the prepared MoS2-chitosan biochar, carrying out ultrasonic stirring, loading on purified melamine sponge, freezing, carrying out vacuum drying, soaking in a CaCl2 solution, washing, freezing, and carrying out vacuum drying to obtain the evaporator. By developing a novel evaporation material, the limitation of a traditional single-interface structure on the evaporation rate is broken through, the evaporation efficiency and the evaporation rate are effectively improved, and the photothermal conversion efficiency and the water production capacity are remarkably improved; and the salt resistance and the pollution resistance of the evaporator are solved, the problem of long-term operation stability is solved, and the method has very high practicability and wide applicability.

The invention relates to the technical field of chemical engineering, in particular to a food-grade ammonia water production system and method. The food-grade ammonia water production system comprises a liquid ammonia tank, a first heat exchanger, a first buffer device, an absorption tower and a second heat exchanger which are connected in sequence; the first heat exchanger is used for heating liquid ammonia to form ammonia gas; the second heat exchanger is used for cooling the ammonia water; an ammonia gas pipeline is arranged between the first buffer device and the absorption tower, and a pressure sensor is arranged on the ammonia gas pipeline; a second buffer device is arranged between the pressure sensor and the ammonia gas pipeline; the first buffer device internally comprises an air inlet pipe, a plurality of distribution pipes arranged in parallel and an exhaust pipe which are connected in sequence; the pipe diameter of the distribution pipe is smaller than that of the gas inlet pipe or the gas outlet pipe. The food-grade ammonia water production system provided by the invention can reduce the fluctuation amplitude of pipeline pressure caused by the process of forming ammonia gas from liquid ammonia, improves the production stability, and enables the detected pipeline pressure value to have a higher reference value.

The present application belongs to the technical field of petroleum chemical industry, and particularly relates to a method suitable for diagnosing liquid loading of gas well, which comprises: judging whether the gas well is liquid loading by critical flow rate method; judging whether the gas well is liquid loading by dynamic energy factor method; judging whether the gas well is liquid loading by pressure gradient method; judging whether the gas well is liquid loading by flow state method; judging whether the gas well is liquid loading by IPR method of water production gas well; judging whether the gas well is liquid loading by deliverability test method; and judging the degree of liquid loading of the gas well. The present application realizes accurate prediction of the dynamic of liquid loading of the gas well by studying the diagnosis technology of liquid loading of the gas well and complementarily verifying different methods, forms a set of targeted and high-compliance liquid loading diagnosis method of the gas well with multiple factors, provides technical support for determining the intervention time of drainage gas recovery measures and formulating scientific and reasonable drainage gas recovery measures, realizes the purposes of improving the liquid discharge capacity of the gas well and prolonging the stable production period of the gas field, and thus ensures normal and stable production of the gas well.

The application discloses a kind of advanced oxidation filtration system and method, the outlet of solution tank is connected with the inlet of pipeline mixer by first pipeline, the outlet of raw water tank is connected with the inlet of pipeline mixer by second pipeline, the outlet of raw water tank is connected with the inlet of US activated filter by third pipeline, the outlet of pipeline mixer is connected with the inlet of US activated filter by ultraviolet generator, first turbidimeter is arranged on the second pipeline;The water outlet of US activated filter is connected with the inlet of water production tank by fourth pipeline, second turbidimeter is arranged on the fourth pipeline in sequence along water flow direction;Ultrasonic probe is arranged on the US activated filter, and the ultrasonic probe is connected with alternating current power supply by ultrasonic generator main body, and the system and method can be handled at low cost.

The utility model discloses an integrated filter, including shell and filter core, filter core is coaxial with shell and is equipped with annular cavity between filter core outside and shell inner wall, and one end of filter core is equipped with water production mouth, and the both ends of shell are equipped with upper end cover and lower end cover respectively, and the inboard end face of upper end cover and lower end cover is equipped with the inner support of circumference distribution, is equipped with water inlet on lower end cover, is equipped with water outlet on upper end cover and water outlet communicates with water production mouth, and is equipped with the exhaust hole of communicating with annular cavity on upper end cover, the utility model discloses filter core and shell adopt the integrated structure of not needing to dismantle, and the better sealing, can bear greater pressure, and liquid can be evenly distributed on filter core outside after flowing into filter, can differentiate pressure protection filter core and dispersed liquid flow and improve filtration efficiency, can reverse flush after long -time use, need not to replace filter core, prolongs the service life of filter.

The invention relates to an automatic cleaning device and method for a reverse osmosis system for valve cooling, the automatic cleaning device for the reverse osmosis system for valve cooling comprises a water inlet branch, a reverse osmosis assembly and a cleaning branch, the reverse osmosis branch comprises a reverse osmosis membrane, and a water inlet pipe section is provided with a first water pressure sensor and a first water inlet electric valve; a concentrated water outlet of the reverse osmosis branch is connected to a waste discharge pipe section, and a second water pressure sensor is arranged on the waste discharge pipe section; a water production port of the reverse osmosis branch is connected to a water production pipe section; a water production electric valve and a water production loop electric valve are arranged on the water production pipe section; the cleaning branch comprises a cleaning box, an alkali adding pipeline assembly, an acid adding pipeline assembly and a circulating pipeline assembly; the cleaning box is further connected with a cleaning backflow pipe section, and the other end of the cleaning backflow pipe section is connected to the waste discharge pipe section. The cleaning box is further connected with an electric heater, a temperature sensor and a PH sensor. The automatic cleaning device realizes automatic detection, automatic cleaning liquid preparation, automatic cleaning and mode switching, is more intelligent, and reduces the manual maintenance difficulty and cost.

The invention relates to the technical field of liquid filling, in particular to a precise metering and drip-proof structure of a filling valve of a barreled water production line, which comprises a fixed rack, a quantitative cylinder and a fixed drain pipe are arranged below the fixed rack, and a connecting water pipe and a water inlet pipe are arranged below the quantitative cylinder; a piston plate matched with the connecting water pipe and the water inlet pipe is arranged in the quantifying cylinder, and a quantifying mechanism matched with the piston plate is arranged in the fixed rack; one-way valve mechanisms are arranged in the connecting water pipe and the water inlet pipe, and the directions of the one-way valve mechanisms in the connecting water pipe and the water inlet pipe are opposite; the quantitative cylinder is connected with the fixed drain pipe through a connecting water pipe; a functional connecting cylinder matched with the fixed drainage pipe is arranged in the fixed drainage pipe, and a water inlet hole matched with the connecting water pipe is formed in the functional connecting cylinder; a sealing mechanism matched with the functional connecting cylinder is arranged in the fixed rack, and the sealing mechanism is connected with the quantifying mechanism; the other end of the water inlet pipe is connected with a water source, and barreled water is filled below the fixed drainage pipe.

The utility model relates to a kind of reverse osmosis thick water emission reduction and reuse system, belong to water treatment technical field.The system includes the thick water reverse osmosis booster pump, ultra-low pressure thick water reverse osmosis device connected in turn, reuse water tank, wherein, reverse osmosis thick water is treated by preposed reverse osmosis device, and after being added hydrochloric acid and scale inhibitor by hydrochloric acid dosing device, scale inhibitor dosing device to reverse osmosis thick water, it is entered ultra-low pressure thick water reverse osmosis device by thick water reverse osmosis booster pump after treatment;The thick water generated after ultra-low pressure thick water reverse osmosis device treatment is directly discharged, and water production enters reuse water tank, part is reused, another part is washed to ultra-low pressure thick water reverse osmosis device by flushing water pump;While ultra-low pressure thick water reverse osmosis device is connected chemical cleaning device.The utility model has the advantages of flexible system operation mode, simple operation, high degree of automation, efficient energy saving, low operating cost, stable and reliable etc..

The invention discloses a liquid inlet balance control method for multiple parallel three-phase separators, which comprises the following steps: taking the water yield of the three-phase separators as a basic parameter of a flow regulating valve of a liquid inlet pipeline, when the water yield of a certain three-phase separator exceeds a certain range of an average value, calculating a ratio Px of a water yield difference value Xi to the current water yield Xi by a control system, and the opening degree of the flow regulating valve is regulated according to Px, so that rapid balance control over the liquid inlet amount of the multiple three-phase separators is achieved. According to the liquid inlet balance control method for the multiple parallel three-phase separators, the problem that the liquid inlet balance control effect of the three-phase separators is poor due to the fact that the gas content of crude oil is large and the liquid inlet amount is not measured accurately is solved, and the situation that crude oil treatment does not reach the standard due to the fact that the liquid inlet amount of a certain three-phase separator is too large due to bias flow is avoided.

This invention relates to the field of industrial automation control technology, and particularly to a quality control system and method for a sparkling water production line. The system includes: acquiring physical quantities of the control process, constructing a state vector, quantifying the deviation of the state vector, constructing a total potential energy function, and obtaining the total system potential energy; constructing a control device action vector, quantifying the changing trend of the control device action vector with respect to the total system potential energy, and obtaining an action gradient vector; introducing a disturbance response mechanism, constructing a disturbance correction vector and a disturbance potential energy function based on the state vector; constructing a control optimization objective function based on the disturbance potential energy function, and dynamically updating the control device action vector through gradient solving and step size control. This solves the problems of traditional quality control methods lacking a unified scheduling mechanism at the system level, lacking the ability to predict and respond to disturbance trends, and relying on empirical parameters or preset rules in the control command generation process, resulting in low control accuracy and poor adjustment efficiency.

The present invention addresses the problem of providing a water production apparatus which is capable of efficiently and accurately producing target water that contains an additive such as a mineral component.　A water production apparatus 1 comprises: an additive starting material storage tank 51 for storing an additive starting material for preparing an additive on the basis of specification information on specific target water; an additive stock solution storage tank 53 for storing an additive stock solution that is obtained by dissolving the additive starting material into raw water; an additive stock solution preparation information generation unit 32 for generating additive stock solution preparation information for preparing the additive stock solution by dissolving (mixing) the additive starting material in the raw water on the basis of the specification information; and an additive stock solution preparation unit 33 for dissolving the additive starting material stored in the additive starting material storage tank 51 into the raw water on the basis of the additive stock solution preparation information so as to prepare the additive stock solution and storing the additive stock solution in the additive stock solution storage tank 53.

The application relates to the technical field of reverse osmosis structures, in particular to a high-flux reverse osmosis filtering composite membrane structure and a preparation method thereof, which comprises a center pipe, water inlet holes one in communication with the outer walls on both sides are formed in the center pipe, a membrane bag is fixedly connected to one side of the outer wall of the center pipe at the water inlet holes one, and the membrane bag is placed in a back-to-back mode by two rectangular reverse osmosis membrane sheets, so that an active separation layer faces outward. By adding a buffer pad on the contact surface of the water production grid and the membrane bag, the direct action of pressure pulsation on the reverse osmosis membrane sheet is avoided, micro-deformation or rupture of the reverse osmosis membrane sheet is avoided, the reverse osmosis membrane sheet always maintains a relatively flat and stable form, the normal separation performance of the reverse osmosis membrane sheet is maintained, the direct impact of pressure on the reverse osmosis membrane sheet is effectively reduced, the risk of rupture of the reverse osmosis membrane sheet is reduced, the service life of the reverse osmosis membrane sheet is prolonged, and the equipment repair and replacement cost caused by damage of the reverse osmosis membrane sheet is reduced.

The application provides a multi-objective dynamic optimization method and system for a solar seawater desalination process, belonging to the technical field of solar seawater desalination control. Firstly, the application collects solution conductivity data at the inlet and outlet positions and irradiance trend data above the photovoltaic array. Then, the conductivity difference is calculated to generate gradient data to map the desalination demand vector, and the cloud motion vector is extracted from the irradiance data using the optical flow method to construct the energy supply potential vector. Subsequently, the two are aligned and convolved to generate a state space matrix, which is input into the constructed Kalman filter to predict the target voltage reference trajectory. Finally, the trajectory is substituted into the multi-objective constraint function to calculate the target duty cycle command, and the DC converter switching state is adjusted to change the operating voltage of the desalination device. The application can achieve real-time multi-objective dynamic optimization of the water production efficiency and equipment safety of the solar seawater desalination system under the dual fluctuations of light and salinity.

The present application belongs to the field of nano-bubble water preparation, and relates to a continuous high-throughput nano-bubble water preparation system and method for oil reservoir development, aiming to solve the problems of low efficiency, small displacement and difficulty in meeting the large-scale continuous operation demand of oil fields in the prior art. The present application comprises a liquid treatment module, a gas generation module, a nano-bubble water series concentration unit and a nano-bubble water injection module. The nano-bubble water series concentration unit is composed of at least two nano-bubble water preparation modules connected in series. An internal circulation preparation circuit is formed by a circulating pump and parallel nano-bubble nozzles inside each preparation module; based on the principle of communicating vessels, the nano-bubble water prepared by the previous module automatically flows into the next module, realizing the step-by-step increase of the nano-bubble concentration. The present application can continuously and efficiently prepare high-concentration and large-displacement nano-bubble water, and the system is modularized, compact in structure, strong in adaptability, low in operation and maintenance cost, and meets the demand of oil field site complex environment.

The utility model discloses a two -stage reverse osmosis equipment, including primary water tank, multistage filter equipment, first precision filter, first booster pump, primary RO host computer, first pure water tank, second booster pump, two -stage RO host computer and second pure water tank through pipeline connection in proper order, the waste outlet of primary RO host computer is connected concentrated water tank through concentrated water pipe, the waste outlet of two -stage RO host computer is connected primary water tank through waste water pipe, be provided with concentrated water backflow pipe between concentrated water pipe and first booster pump, and concentrated water backflow pipe is connected on the water inlet pipe of first booster pump, be provided with backflow valve on concentrated water backflow pipe, prolong the life of primary RO host computer inner membrane, reduce the cost caused by frequent replacement, also ensure the water production of reverse osmosis.

The utility model discloses a waste water treatment matching slag removal and oil separation device which comprises a treatment pond, and an oil separation tank, an isolation tank and a water production tank are sequentially arranged in the treatment pond; the oil separation tank is communicated with the waste liquid barrel, and the water production tank is communicated with the relay barrel; the oil separation groove is communicated with the isolation groove; a slag removal plate and an oil separation plate are arranged in the oil separation groove, the oil separation plate is arranged close to the isolation groove, and the side, facing the oil separation plate, of the slag removal plate is obliquely arranged; the lower end of the oil separation tank is provided with a communicated slag collecting tank, the lower end of the slag collecting tank is provided with a slag discharge port, and the slag discharge port is provided with a slag discharge valve; an oil collecting groove is formed in the outer side wall body of the oil separating groove and communicated with the oil separating groove through an oil flowing opening, the oil flowing opening is higher than the slag removing plate, and the oil collecting groove is connected with a waste oil collecting barrel through an oil discharging opening in the lower end of the oil collecting groove. According to the utility model, integrated equipment is adopted, so that the occupied area is small; operation is simple, and manpower and material resources are saved; the deoiling and deslagging effects are good, blockage is not easily caused, and the failure rate of equipment is reduced.

The application discloses a kind of gas injection development reservoir gas storage effect judging method, system, equipment and medium, and the stage cumulative gas injection volume subvolume is calculated, and then the stage gas storage ratio is calculated;The stage cumulative oil production subvolume and stage cumulative water production subvolume are calculated, and the stage cumulative total production is added;According to stage cumulative gas injection volume subvolume and stage cumulative total production, stage injection-production ratio is calculated;According to stage cumulative oil production subvolume, stage cumulative water production subvolume and stage cumulative gas production subvolume, the subvolume gas-liquid ratio is calculated;Stage injection-production ratio and subvolume gas-liquid ratio are brought into stage gas storage ratio calculation, and then the gas storage ratio chart is obtained;The stage gas storage ratio of other production cycle is calculated, and the result is added to the gas storage ratio chart, the stage gas storage ratio corresponding to different production cycles is observed, and the gas storage effect and trend of different production cycles are judged.

The application discloses a seawater desalination roll type membrane device based on a biomimetic flow guide net. Multilayer hollow cylindrical reverse osmosis membranes are coaxially arranged in the inside of a reverse osmosis membrane assembly, an annular cavity is formed between every two adjacent reverse osmosis membranes, a hollow cylindrical biomimetic flow guide net is arranged in each annular cavity, the biomimetic flow guide net is coaxially arranged with the reverse osmosis membrane and is located on the central ring line of the annular cavity; liquid to be desalinated is flowed into the reverse osmosis membrane assembly from an inlet, is desalinated by the reverse osmosis membrane and the biomimetic flow guide net, and is finally flowed out of the reverse osmosis membrane assembly from an outlet; a plurality of biomimetic flow guide units of the biomimetic flow guide net are arranged in a longitudinal and transverse staggered mode, and each biomimetic flow guide unit is mainly composed of a plurality of flow guide columns in an elliptical cylindrical structure and is sequentially connected. The application has the advantages of simple structure, high reliability, easy manufacturing and good popularization value, and the structure can further improve the water production efficiency of the roll type membrane assembly and reduce the production cost of a water treatment plant.

To provide a secondary pure water system that can reduce environmental impact and maintain the quality of ultrapure water. [Solution] A secondary pure water production device in an ultrapure water production system comprising a primary pure water production device and a secondary pure water production device, wherein the secondary pure water production device has a non-regenerative ion exchange device and an ultrafiltration membrane in that order, and at least the downstream side of the non-regenerative ion exchange device is connected by non-fluorine and non-chlorine synthetic resin piping. As the non-fluorine and non-chlorine synthetic resin piping, polyolefin resin piping such as polypropylene or polyethylene is used.

The application discloses a filtering method based on a circulating water path, which is applied to a filtering system, and the filtering system comprises a raw water branch, a booster device, a water production branch, a waste water discharge branch, a pure water discharge branch, a pure water return branch and a preposition device. When it is judged that the water production branch meets a flushing condition, the filtering system is controlled to perform a flushing operation, and the flushing operation comprises first stage flushing and / or second stage flushing. When it is judged that the water production branch meets a water production condition, the filtering system is controlled to perform first stage water production and second stage water production. It can be seen that the application can provide a multi-stage flushing and water production control mechanism to effectively flush and produce water for the filtering system, significantly improve the intelligent control level of the filtering system, improve the flushing efficiency of the filter core, improve the water production rate of the filtering system, improve the quality of the first cup of water, and avoid waste of water resources.