1073 results about "Reclaimed water" patented technology

The invention discloses a water flow intelligent monitoring system and method, and relates to the technical field of water flow intelligent monitoring, in combination with an actuator health degree evaluation and multi-target prediction control method, the characteristics of a valve and a water pump are finely described by arranging sensors and constructing a digital twinborn model; model predictive control or multi-agent reinforcement learning is adopted to dynamically generate a reliable and efficient control instruction; furthermore, through real-time closed-loop deviation detection and self-adaptive correction, delay, faults or communication abnormity of the actuator can be accurately dealt with; 4, quickly completing self-healing and fault-tolerant control by using a fault prediction and standby scheduling strategy to prevent failure diffusion; and 5, scenes such as rainfall flood, fire fighting and reclaimed water are incorporated into the same framework, and multi-scene coupled comprehensive water resource management is realized, so that water hammer impact and water leakage risks can be effectively reduced, and the safety of the water supply system under complex working conditions or equipment aging is remarkably improved.

The invention relates to the technical field of water resource scheduling, and provides an urban inland river system intelligent resource scheduling management system and method based on dynamic data collaboration, and the method comprises the following steps: S1, collecting river hydrological data, water quality indexes, urban water demands and water transfer facility state data in real time, and carrying out the time-space alignment and abnormal value filtering; s2, a hydrodynamic force-water quality coupling model of multiple water sources is established, a multi-objective optimization model is established in combination with constraint conditions of ecological base flow and an engineering upper limit, and the multiple water sources include but not limited to river water, underground water, reservoir water, reclaimed water, rainwater and desalinated seawater; and S3, carrying out global dynamic optimization on the water transfer proportion and the water transfer facility parameters by adopting a model algorithm, and minimizing the water transfer cost and the ecological influence. By quantifying the maximum flow upper limit and the ecological base flow threshold value of each water source and optimizing the water transfer proportion and facility parameters, the water resource utilization efficiency is improved, and it is guaranteed that the water transfer cost and the ecological influence are balanced in the urban river water dispatching process.

The invention discloses an intelligent purification and circulation method and system for waste water of a motor home, and belongs to the technical field of waste water treatment and reuse. Generating a matrix containing key pollution characteristics based on the parameters; executing multi-stage membrane treatment according to the matrix decision to obtain graded water quality; based on a water quality matching reuse standard, a scheduling scheme is generated by combining requirements and environment adjustment priorities; the scheme and the water network state are combined to optimize water volume allocation, and efficient recycling of recycled water is controlled. According to the invention, dual-mode sensing fusion analysis, dynamic pollution characteristic identification, multi-stage membrane intelligent cooperative processing and a water network balance optimization scheduling strategy are adopted, efficient deep purification, safe grading recycling and intelligent management of motor home wastewater can be realized, and the utilization rate of water resources, the intelligent level of system operation and the user experience are remarkably improved.

The invention discloses a heavy metal infiltration risk prediction method for reclaimed water irrigation mining and metallurgy area greenbelt soil, which comprises the following steps: detecting the contents of heavy metals and salt ions in mining and metallurgy area reclaimed water and greenbelt soil, and detecting the physicochemical properties and hydraulic parameters of the soil; carrying out experimental simulation on the basis of detection data to obtain heavy metal form distribution and chemical equilibrium parameters of each phase of soil, then constructing a soil mineral phase-organic matter heavy metal adsorption kinetic model, constructing a soil solid phase equilibrium adsorption capacity calculation model, and further constructing a reclaimed water driven heavy metal geochemical migration process model; the heavy metal content of the mining and metallurgy area soil serves as an initial input item of the migration process model, and the heavy metal infiltration flux of the mining and metallurgy area greenbelt soil in the target prediction time is predicted in a rolling mode according to the heavy metal concentration of the recycled water; and calculating the heavy metal pollution index according to the predicted heavy metal infiltration flux. The method can quickly, accurately and economically evaluate the heavy metal infiltration risk of the reclaimed water irrigated green land soil.

The invention relates to the technical field of wastewater treatment, in particular to a synchronous treatment method and device for fluorine and silicon in wastewater, the fluorine and silicon wastewater treatment device comprises an outer cylinder and an inner cylinder, the inner cylinder is suspended in the outer cylinder, and an inner circulation passage is formed between the inner cylinder and the outer cylinder; a waste water feeding pipe and a crystal inducing agent feeding pipe are respectively arranged at the lower part of the outer barrel, outlets of the waste water feeding pipe and the crystal inducing agent feeding pipe are positioned below a lower barrel opening of the inner barrel, a water outlet pipe is arranged at the upper part of the outer barrel, and a return pipe is arranged between the water outlet pipe and the waste water feeding pipe; a granulation body discharge pipe is arranged at the bottom of the outer cylinder. Compared with the prior art, the purpose of efficiently and synchronously removing fluorine and silicon in the wastewater is achieved in the single-stage reactor by utilizing the modified composite seed crystal, designing the reflux of the recycled water and controlling the reflux ratio, the dosage of reagents is small, the process is short, the energy consumption is low, the formed granules are low in water content and high in solid-liquid separation efficiency, and the method is suitable for industrial production. Secondary treatment is not needed, and industrial application is facilitated.

The invention provides a low-carbon circulating technological process for treating high-total-nitrogen wastewater. A main treatment unit and a resource recycling and circulating unit are included; the main treatment unit is characterized in that high-total-nitrogen wastewater sequentially passes through a pH regulating tank, a sulfur autotrophic denitrification tank, a biochemical system, a secondary sedimentation tank, a deep treatment line and ultrafiltration reverse osmosis, produced reclaimed water enters produced water for delivery, and a part of produced concentrated water enters a resource recovery and circulation unit; the resource recovery and circulation unit is characterized in that after concentrated water is treated by a vertical electrophoresis device, mixed acid, mixed alkali and low-salt water are separated out, the mixed alkali is sent to a sulfur autotrophic denitrification tank to be used for supplementing alkalinity consumption of the sulfur autotrophic denitrification system, and the mixed acid sequentially passes through an anaerobic regulating tank, an anaerobic reactor, an alkali washing tower, a biological desulfurization reactor and a sedimentation tank; the recovered sulfur can be sold as elemental sulfur or reused in the sulfur autotrophic denitrification tank, and supernate flows back to the alkaline tower; a green, low-carbon and recyclable water treatment process flow is realized.

The invention discloses an optimized dispatching water supply method for reclaimed water and conventional water under a drought condition, which comprises the following steps: evaluating a drought grade through meteorological data, precipitation prediction and reservoir level factors, dynamically adjusting the water supply amount of a conventional water source according to the drought grade, and preferentially guaranteeing life and ecological water; according to the production type and the water quality requirement of the enterprise, the reclaimed water demand and the water quality grade are evaluated and divided, and water sources are optimally distributed; the total water deficit and the water consumption cost are minimized by optimizing the scheduling model, and the reclaimed water and the conventional water are reasonably scheduled; and setting constraint conditions to ensure that the conventional water source water supply capacity, the reclaimed water treatment capacity and the pipe network distribution capacity are not in overload operation. Reasonable supply of a conventional water source and reclaimed water is ensured through accurate drought grade evaluation and water source dynamic adjustment; reclaimed water with matched water quality grades is provided according to different water quality requirements of enterprises, and excessive treatment and water quality waste are effectively reduced.

The present invention relates to a system and a treatment method for treating high-phosphorus wastewater and resourcefully utilizing phosphorus elements. The system includes a bipolar membrane electrodialysis device, a phosphorus precipitator, and a membrane treatment device. Inside the bipolar membrane electrodialysis device, there are successively arranged a cathode, a first bipolar membrane, a main cation exchange membrane, a main anion exchange membrane, a second bipolar membrane, and an anode. Between the first bipolar membrane and the main cation exchange membrane is an alkali chamber, between the main cation exchange membrane and the main anion exchange membrane is a wastewater chamber, between the main anion exchange membrane and the second bipolar membrane is an acid chamber, the outside of the first bipolar membrane is a cathode chamber, and the outside of the second bipolar membrane is an anode chamber; the high-phosphorus wastewater is input into the wastewater chamber, the acid chamber is provided with a phosphoric acid recovery pipe, and the alkali chamber and the wastewater chamber are respectively connected to the phosphorus precipitator through an alkali liquid pipe and a first water production pipe; the phosphorus precipitator is provided with a precipitant inlet for inputting a calcium precipitant or a magnesium precipitant, the concentrated water outlet of the membrane treatment device is connected to the wastewater chamber, and the produced water of the membrane treatment device is reused as reclaimed water.

The invention belongs to the technical field of water quality monitoring, and discloses a reclaimed water reuse landscape water quality change monitoring method and system, and the method comprises the steps: obtaining original measurement data of a target index in a water body and a plurality of environment background parameters representing a water body environment background; analyzing and calculating a dynamic influence relationship between the original measurement data of the target index and each environment background parameter to obtain a state parameter representing a measurement deviation state of the target measurement device; determining a correction value corresponding to the current environment background and the measurement deviation state of the target measurement device by using a pre-established knowledge base according to the plurality of environment background parameters and the state parameters; correcting the original measurement data of the target index by using the correction value to obtain the corrected measurement data of the target index for evaluating the long-term influence of the reclaimed water on the aquatic ecological environment; an evaluation result is sent to a remote monitoring center; therefore, accurate measurement data can be provided, and reliable long-term influence evaluation is realized.

The invention relates to a reclaimed water reuse regulation and control method and system based on artificial intelligence and digital twinning, and the method comprises the steps: collecting initial data in a water treatment system, and carrying out the data preprocessing of the initial data to generate preprocessed data; constructing a digital twinning virtual model, and updating model parameters of the digital twinning virtual model based on the preprocessed data through a Bayesian reasoning algorithm to obtain a target digital twinning virtual model; outputting a water quality prediction result in a future preset time period through a pre-constructed water quality prediction model in the decision-making layer, and performing a rehearsal control strategy in the target digital twin virtual model based on the water quality prediction result to generate an optimization control instruction; performing data anomaly detection and fault diagnosis processing based on the preprocessed data through an anomaly detection model and an isolated forest algorithm to generate a fault diagnosis report; and issuing the optimization control instruction to an execution mechanism. The system response speed is improved, the control strategy perspectiveness is enhanced, and the equipment operation and maintenance intelligent level is improved.

The invention relates to the technical field of seawater desalination, in particular to a seawater desalination reverse osmosis membrane, a preparation method and application. The seawater desalination reverse osmosis membrane is prepared by the preparation method. The preparation method comprises the following steps: immersing the prepared support layer into a water phase solution, and then taking out the support layer adsorbing the water phase solution; immersing the support layer adsorbing the water phase solution into a first oil phase solution, and forming a primary reverse osmosis membrane through a first interfacial polymerization reaction; then, taking out the primary reverse osmosis membrane, and carrying out first drying treatment under a steam condition; and immersing the primary reverse osmosis membrane into a second oil phase solution, and carrying out a second interfacial polymerization reaction to form the seawater desalination reverse osmosis membrane. The application refers to the application of the reverse osmosis membrane for seawater desalination in the aspects of reclaimed water reuse, seawater desalination and brackish water desalination. According to the invention, the seawater desalination reverse osmosis membrane which simultaneously meets high desalination rate and high water flux can be prepared.

The present invention relates to a modular and scalable system for intelligent vertical farming infrastructure, using the latest in water recycling sciences, and artificial-intelligence based automation. This helps to combat the issue of sustainable Agriculture+its minimizing usage of water, energy, and space. It combines a vertical farming structure with multiple levels of cultivation with an irrigation and drainage system to achieve recirculation of water. The water recycling unit consists of rainwater harvesting, wastewater collection and multi-stage treatment subsystems, which can guarantee a continuous supply of high-quality recycled water for irrigation. The invention also combines a network of Internet of Things (IoT)-enabled sensors and AI-based control circuitry to track and manage environmental conditions (e.g. light intensity, humidity, temperature, and nutrient levels).

The invention discloses a reclaimed water replenishing flow control method and system based on industrial wastewater recycling, and the method comprises the steps: dividing a river into a plurality of water replenishing regions according to the terrain height of a river landscape, collecting basic ecological data of different water replenishing regions, and inputting the basic ecological data and future weather data into a flow prediction model, outputting the water replenishing flow required by each water replenishing area; the water replenishing priority is determined according to the water replenishing flow needed by each water replenishing area, and the water replenishing flow speed is determined according to the river channel width and gradient of the water replenishing area; water flow supply is conducted according to the water supply priority and the water supply flow speed; and monitoring ecological change data of each water replenishing area, feeding back the ecological change data to the flow prediction model, carrying out continuous training optimization, and applying the optimized model to the next water replenishing period. According to the method, multivariate data are integrated, the water supplementing flow can be accurately predicted, the supplementing amount needed by each water supplementing area is dynamically adjusted by combining future weather data with basic ecological data, the water supplementing strategy can be continuously optimized, and effective utilization of water resources is ensured.

The utility model provides a pig farm reclaimed water recycling system with multiple application scenes, which comprises a pretreatment device, a reverse osmosis device, a first recycling device, a disinfection device and a second recycling device which are connected in sequence, the pretreatment device comprises a full-automatic multi-medium filter and an ultrafilter which are connected in sequence; the reverse osmosis device comprises a scale inhibitor, a precision filter and a reverse osmosis membrane assembly which are connected in sequence, and the ultrafilter is connected with the scale inhibitor; the first recycling device comprises a first water storage tank, and the first water storage tank is connected with the reverse osmosis membrane assembly. The utility model overcomes the key core problem of hindering the reuse of reclaimed water in a large-scale farm, provides a feasible technical scheme for the industry, and not only can relieve the water pressure of the pig farm, but also can save clean water resources.

The invention belongs to the technical field of sewage treatment and comprehensive utilization of water resources, and particularly relates to a reclaimed water reuse and rainwater collection and utilization system in an expressway service area. A sewage treatment, rainwater collection and water-saving irrigation integrated system is constructed, and the MBR process is emphatically applied to treat sewage. The system can effectively remove various pollutants in the sewage, so that the effluent reaches the reclaimed water reuse standard, and the sewage recycling is realized. Meanwhile, rainwater is efficiently collected and utilized, and the water demand of vegetation is accurately met in combination with an intelligent water-saving irrigation technology. The dependence of the service area on fresh water resources is reduced on the whole, the pollution of sewage discharge to the environment is reduced, the water resource management level is improved, remarkable economic, social and environmental benefits are achieved, and an innovative scheme is provided for sustainable utilization of the water resources in the small service area of the expressway.

The invention discloses a method for treating printing and dyeing wastewater based on an aerobic granular sludge technology, which comprises the following steps: culturing and domesticating aerobic granular sludge: adopting a sequencing batch activated sludge reactor with a large height-diameter ratio, adding high-load simulated printing and dyeing wastewater into the reactor, and starting to culture the aerobic granular sludge; treating the printing and dyeing wastewater by using the aerobic granular sludge: treating the printing and dyeing wastewater by using the cultured and domesticated aerobic granular sludge; carrying out biological aerated filter pretreatment: carrying out starting and biofilm formation by adopting simulated wastewater; advanced treatment with a double-membrane process: treating the effluent with the double-membrane process, wherein ultrafiltration adopts a high-strength hollow fiber membrane module, and the operation mode is an external pressure mode; an anti-pollution membrane assembly with pollution resistance, high desalination rate and high water yield is adopted for reverse osmosis, and by adjusting operation parameters of a double-membrane process, the effluent quality meets the water quality requirement of recycled water in the textile dyeing and finishing industry.

The invention discloses an urban reclaimed water supply and demand collaborative prediction method, which comprises the following steps: processing a multi-source heterogeneous data flow from a reclaimed water pipe network, and generating a standardized spatio-temporal data set; a dynamic graph network prediction model is constructed based on the data set, a plurality of hydraulic conveying paths between nodes are explored, a bimodal form path conduction kernel capable of representing physical transmission delay and decision response delay respectively is constructed for each path, and then a comprehensive conduction kernel is formed through weighted stacking so as to accurately represent water quality space-time conduction characteristics; and generating a sub-quality demand prediction result and a cross-factory collaborative production scheme by using the model and the real-time demand signal. According to the method, the accuracy of prediction, the economical efficiency of scheduling and the safety and value of renewable water resource utilization can be improved by depicting the hydraulic power-water quality coupling conduction rule in a refined manner and combining an efficient collaborative optimization strategy.

The invention discloses a lime coagulation and clarification treatment system and method based on intelligent dosing, and belongs to the technical field of water treatment.The system comprises an efficient softening coagulation and clarification unit and an intelligent monitoring unit, a lime milk intelligent preparation unit, an intelligent dosing control unit and a sludge dewatering unit which are connected with the efficient softening coagulation and clarification unit. The efficient softening, coagulation and clarification unit is formed by sequentially connecting a wastewater regulating tank, a first-stage rapid mixing tank, a second-stage slow flocculation and concentration tank, a tubular membrane intelligent filtering device and a produced water neutralization tank; the intelligent monitoring unit collects incoming water and produced water data and transmits the data to the intelligent dosing control unit; the intelligent lime milk preparation unit is used for preparing and adding lime milk; the intelligent dosing control unit realizes intelligent dosing; and the sludge dewatering unit is used for treating the discharged sludge and returning the sewage. Intelligent monitoring, self-adaptive control, prediction algorithm and softening coagulation clarification are realized, the problems of inaccurate dosing, large water quality fluctuation and low automation degree of a traditional system are solved, and the system is suitable for scenes such as reclaimed water deep treatment and industrial wastewater treatment.

The invention discloses a port sewage treatment intelligent control and water resource efficient utilization system and method, belongs to the technical field of water conservancy projects, and collects multi-source water quality, water quantity, equipment operation state, pipe network and environment data in real time by deploying an environment data sensing module in a port area. And the multi-source data fusion and analysis module cleans, analyzes and predicts the data and generates an optimization decision basis. The flow decision control module generates an intelligent control instruction based on the flow decision control module, and controls sewage treatment facilities and water resource scheduling. And the intelligent execution and feedback module executes the instruction and visually presents the instruction. Intelligentization and energy consumption optimization of port sewage treatment are effectively realized, and through linkage of dust concentration and reclaimed water dust suppression, intelligent allocation of multi-source water bodies and the like, the utilization efficiency of water resources is greatly improved, the operation cost is reduced, dependence on municipal water is reduced, and sustainable development of port water affairs is realized.

The invention discloses a river water environment comprehensive treatment system which comprises river banks, a mounting platform is connected between the river banks on the two sides, a wooden house is built on the mounting platform, and a treatment system is arranged below the wooden house. The treatment system comprises a vortex fan, an air suction pipe, an air outlet pipe, a flow dividing pipe, a supporting rod, an aeration pipe, a balancing weight, a fixing rod, a filter screen, an ecological floating island and a settling pond, and solves the problems that urban river channels are polluted to different degrees, some river channels are muddy to different degrees, some aquatic organisms are difficult to survive due to less clear water and more reclaimed water and eutrophication, and the like. The problems that the river channel pollution is increasingly serious, some river channels can emit peculiar smell in hot weather, and the surrounding living environment and the city appearance of a city are seriously influenced are solved.

The invention discloses a treatment process of photovoltaic cell production wastewater, and relates to the technical field of industrial wastewater treatment. Comprising the following steps: treating dilute acid and dilute alkali through a reclaimed water recovery membrane system to obtain first produced water and reclaimed water concentrated water; treating the concentrated acid wastewater and the reclaimed concentrated water through a fluorine-calcium crystallization system to obtain defluorinated concentrated water and calcium fluoride crystals; treating the RO concentrated water and the defluorinated concentrated water by a hardness removal recycling system to obtain hardness-removed concentrated water and second produced water; treating the concentrated alkali wastewater through an alkali recovery membrane system to obtain purified alkali and alkali-removed concentrated water; hardness-removed concentrated water and alkali-removed concentrated water are treated by a comprehensive physicochemical system, and then are sequentially treated by a high-power concentration membrane system and a zero-discharge crystallization system to obtain solid wastes. The photovoltaic cell production wastewater treatment process provided by the invention achieves an economical and feasible zero-emission solution.

The invention discloses a reclaimed water conveying method and system integrating energy recovery and electric energy storage, and relates to the technical field of reclaimed water conveying. The method comprises the following specific steps: purifying original wastewater through pretreatment and advanced treatment to obtain reclaimed water; conveying the reclaimed water through an urban reclaimed water pipe network; a hydroelectric generation device is arranged in an urban reclaimed water supply system, gravitational potential energy of water flow in the reclaimed water conveying process is converted into electric energy, and energy recovery is carried out; and the recycled electric energy is stored in the energy storage equipment and is used for the operation of a subsequent reclaimed water conveying system. Energy recovery and electric energy storage are achieved in the reclaimed water conveying process, the energy utilization efficiency is improved, dependence on external energy is reduced by recovering energy in the reclaimed water flowing process, and the conveying cost is reduced.

The invention relates to a water treatment and membrane separation technology, and provides an integrated catalytic separation membrane, a preparation method thereof, and a water treatment method and system. According to the membrane, polyvinylidene fluoride is used as a continuous phase to form a porous matrix, and cerium dioxide is embedded and fixed in a mode of uniform dispersion in a membrane body in a phase inversion membrane forming process; in the presence of illumination and peroxysulfate, active species are generated through in-situ activation on a membrane-water interface, and membrane separation is completed synchronously. The water treatment method comprises the following steps: adding peroxymonosulfate or peroxydisulfate into a water body to be treated, and filtering through the membrane under illumination; the photothermal effect generated by organic matter degradation intermediates in operation inhibits membrane pollution and maintains flux. According to the invention, short-range coupling of active sites and mass transfer channels is realized, the medicament and energy utilization rate is improved, the coating stripping and metal dissolution risk is reduced, and the method is suitable for drinking water pretreatment, reclaimed water deep treatment and treatment of water containing natural organic matters / humic acid.

The utility model discloses reverse osmosis equipment for recycling reclaimed water, which comprises a treatment unit, the treatment unit comprises a base, a high-pressure pump and a connecting frame, the high-pressure pump and the connecting frame are fixedly connected to the top of the base, the outer wall of the high-pressure pump is fixedly communicated with a high-pressure pipe, and the treatment unit further comprises a treatment assembly for pretreating the reclaimed water and a reverse osmosis unit, the membrane shell is fixedly connected to the inner wall of the connecting frame, the top and the bottom of the membrane shell are fixedly communicated with a water inlet pipe and a water outlet pipe respectively, the high-pressure pipe is communicated with the water inlet pipe, the bottom of an inner cavity of the membrane shell is fixedly connected with a pure water pipe, the pure water pipe is communicated with the water outlet pipe, and a plurality of round holes are formed in the outer wall of the pure water pipe. According to the utility model, the reclaimed water can be preliminarily classified and filtered through the plurality of filter sheets, and is fully contacted with the reverse osmosis membrane, so that the phenomenon that impurities block the end part of the reverse osmosis membrane is avoided, and the reverse osmosis effect is improved.

The invention discloses a tunnel anti-crack maintenance system design method, an anti-crack maintenance system and a construction method, and the method comprises the following steps: design preparation: obtaining tunnel parameters and indexes, including tunnel length, construction progress, maintenance time requirement, pedestrian crossing spacing distance, ventilation facility installation condition, water supply facility installation condition, and temperature and humidity inside and outside a tunnel hole; determining the position of a sub-maintenance system; designing a ventilation device of the maintenance system according to the installation condition of ventilation facilities in the tunnel hole, including designing a ventilation pipeline line; a circulation device of the maintenance system is designed according to the installation condition of water supply facilities in the tunnel hole, arrangement design of a water circulation pipeline and a reclaimed water recovery device is included, and an arrangement diagram is drawn; calculating a turnover period and a turnover distance; a humidifying device is designed, the humidifying device comprises a humidifying material sheet made of a wet film, water is supplied to the humidifying device through a circulating device, and a ventilation device is used for humidifying external air through the humidifying device; and calculating the optimal wind speed and circulating water temperature.

The utility model relates to a pilot plant test device for removing high-concentration total nitrogen. The pilot plant test device comprises a base, an autotrophic denitrification tank, a reclaimed water tank and a clear water tank, a liquid inlet and a backwashing gas inlet are formed in the lower end of the side wall of the autotrophic denitrification tank, a liquid outlet is formed in the upper end of the side wall of the autotrophic denitrification tank, and a water and gas distribution system, a pebble supporting layer and sulfur autotrophic filler are sequentially arranged in the autotrophic denitrification tank from bottom to top; the liquid inlet is connected with a main liquid inlet pipe, the main liquid inlet pipe is connected with the reclaimed water tank through a liquid inlet pipeline and a liquid inlet pump, the liquid inlet pipeline is connected with the clear water tank through a reflux pipeline and a reflux pump, and the clear water tank is connected with the main liquid inlet pipe through a backwashing pipeline and a backwashing pump; the backwashing air inlet is connected with a backwashing fan through a backwashing air inlet pipeline; the liquid outlet is connected with the clear water tank through a liquid outlet pipeline, and the liquid outlet pipeline is connected with the reclaimed water tank through a blow-off pipeline. The sewage treatment device is simple and easy to operate, reliable in performance and good in sewage treatment effect.

The invention provides an intelligent monitoring and adjusting reclaimed water irrigation method and system, and relates to the technical field of water resource utilization, and the method comprises the steps: deploying a sensor network which comprises a water quality sensor, a flow sensor and a pressure sensor; the sensor network monitors parameters of the irrigation system in real time and sends the parameters to the intelligent controller; the intelligent controller uploads the parameters to a cloud server; the cloud server analyzes the parameters through an intelligent control algorithm and dynamically adjusts water resource distribution; the intelligent controller receives an adjusting instruction of the cloud server and automatically adjusts parameters of the irrigation system.

The invention discloses a high-salt-content wastewater crystal. The high-salt-content wastewater crystallization comprises the following steps: S1, pretreatment: wastewater in a system enters a homogeneous regulation tank in S1, water is discharged from the homogeneous regulation tank to a high-density tank 1 #, PAC, PAM, lime sodium carbonate and NaOH are added into the high-density tank 1 # for reaction, water is discharged from the high-density tank 1 # to a high-density tank 2 #, PAC, PAM and sodium metaaluminate are added into the high-density tank 2 #, water is discharged from the high-density tank 2 # to a high-strength membrane tank, and water is discharged from the high-strength membrane tank to a two-stage weak acid cation bed; s2, evaporative crystallization: the concentrated water in the concentrated water feeding tank enters a triple-effect mixed salt evaporative crystallization device to separate out mixed salt of sodium chloride and sodium sulfate and part of carnallite. The high-salt-content wastewater crystal provided by the invention can achieve the purposes of salt separation and zero discharge, and recycling and reusing of produced water and saltpeter, and also realizes recycling of produced reclaimed water and resource reutilization of produced sodium sulfate and sodium chloride as industrial raw materials.

The utility model relates to the field of ethylene oxide and ethylene glycol production sewage treatment, and discloses a reclaimed water recycling system matched with ethylene oxide and ethylene glycol production, which comprises a reclaimed water regulating tank (31), a hardness removal sedimentation tank (32), an ozone water inlet tank (33), an ozone contact tank (34) and a reclaimed water post-positioned CBR tank (35) which are sequentially connected, and the reclaimed water post-positioned CBR tank (35) is connected with an RO (reverse osmosis) membrane treatment tank (36). Fresh water discharged from the RO membrane treatment tank (36) is recycled to a low-salt wastewater treatment system (10), and concentrated water discharged from the RO membrane treatment tank (36) is connected to an RO concentrated water hardness removal tank (37); the reclaimed water recycling system not only realizes recycling of circulating water in multiple places, but also can cooperate with efficient treatment of low-salt wastewater and efficient treatment of high-salt wastewater to recycle clear water, so that water saving and emission reduction are realized, the operation cost is reduced, and the treatment efficiency is high.

The invention relates to the technical field of sewage treatment, in particular to a metal sulfide nanoparticle slow-release activator for sewage treatment and a preparation method of the metal sulfide nanoparticle slow-release activator for sewage treatment. The surface of the core layer is coated with the porous silicon dioxide membrane shell layer; the citric acid modifier is loaded on a core-shell interface; according to the invention, metal sulfide (such as FeS, MoS2, WS2 and the like) micro-nano particles are used as a solid-phase slow-release activator, so that the core problem of a traditional homogeneous activation system is radically solved. Firstly, the metal sulfide exists in the form of a solid phase and can directly contact and react with permanganate without an additional dissolving step, so that the problem of complicated process operation caused by poor solubility of activating agents such as sulfite is thoroughly avoided, and the process of reclaimed water treatment is simplified. The problem of poor continuous oxidation effect of a traditional homogeneous system is thoroughly solved.