774 results about "Desalination" patented technology

The invention relates to the technical field of agricultural engineering and ecological environment protection, in particular to a saline-alkali soil desalination improvement system and method based on brackish water recycling. The system comprises a data collection module which collects soil salinity data, meteorological data and crop growth data of the saline-alkali land in real time; the data processing and analyzing module is used for receiving and preprocessing the soil salinity data, the meteorological data and the crop growth data of the saline-alkali land, constructing a soil salinity prediction model and outputting a soil salinity prediction result; the irrigation strategy decision module is used for generating an optimal irrigation strategy by adopting a reinforcement learning algorithm according to the soil salinity prediction result and the preprocessed crop growth data; and the irrigation control system is used for performing brackish water irrigation operation on the saline-alkali soil according to the optimal irrigation strategy. Precise regulation and control of saline-alkali soil salinity can be achieved, brackish water is adopted as irrigation water, water resources are saved to a certain degree, and therefore the improvement cost of saline-alkali soil is reduced.

The invention relates to the technical field of agriculture, in particular to a plant nutrient solution for saline-alkali soil improvement and a preparation method thereof. The invention relates to a preparation method of a plant nutrient solution for improving saline-alkali soil. The preparation method comprises the following steps: preparing NO3-intercalated layered double hydroxides and acid modified calcium-based montmorillonite; preparing humic acid chelated calcium magnesium powder; preparing a binary compound; and preparing the plant nutrient solution. The preparation method comprises the following steps: preparing NO3-intercalated layered double hydroxides from calcium nitrate tetrahydrate and aluminum nitrate nonahydrate, carrying out acid modification on calcium-based montmorillonite by using dilute sulphuric acid, purifying humic acid, and mixing with calcium chloride and magnesium chloride hexahydrate to prepare humic acid chelated calcium magnesium powder. Finally, the three components are added into pig excrement fermentation liquor to prepare a plant nutrient solution, an adsorption-replacement-leaching closed loop can be formed, the desalination and alkali reduction efficiency is remarkably improved, the soil structure is improved, the effect of synergistically improving the saline-alkali soil is achieved, and therefore plant growth is promoted.

Systems and methods for crude oil desalting technology are provided. More specifically, systems and methods for the usage of waste heat from compression to treat high salinity water are provided. The systems and methods generate recycled water streams for desalter treatment. The systems and methods can treat high salinity waters from desalters and dehydrators. The high salinity streams are introduced to the compressed gas streams, where the waste heat causes the water portion of the water streams to evaporate, resulting in a fully or near-saturated gas stream and a concentrated waste water stream. The saturated gas streams are cooled and condensed, and low TDS water is separated from the gas stream in knockout drums. The low TDS water can be reintroduced to the desalting system as wash water, generating a circular water reuse.

A leaching and desalinating system for sandy soil in estuarine land reclaimed by sand blowing before planting greenery is provided. The leaching and desalinating system comprises a water pump and pipe assembly, a freshwater storage tank and a main diverting and draining channel. The water pump and pipe assembly lifts freshwater from a river to the freshwater storage tank through a water delivery pipe, multiple infiltration parts in which greenery is planted are provided on the waterside slope, the infiltration parts are connected to each other via multiple drainage infiltration channels. The present disclosure can quickly desalinate the sandy soil in land reclaimed by sand blowing at a low cost, improve the physicochemical properties of the soil, and provide a basic guarantee for the subsequent greenery planting on the sandy soil in land reclaimed by sand blowing.

The invention relates to the technical field of water treatment, and provides a reverse osmosis membrane cleaning method, a cleaning agent composition and application. According to the method, whether cleaning is needed or not is determined by comparing initial operation parameters and current operation parameters of a system; the pollutant type is accurately judged by observing the appearance characteristics of the membrane surface and detecting related index parameters; and selecting a corresponding cleaning agent formula according to the pollutant type, and sequentially performing physical washing and chemical cleaning. The cleaning agent composition comprises a biological pollution cleaning agent, an organic pollution cleaning agent and / or an inorganic scaling cleaning agent. By establishing a scientific pollution diagnosis system and a targeted cleaning strategy, the problems of fixed cleaning scheme and low pertinence in the prior art are solved, the pressure difference recovery rate after cleaning can reach 90% or above, the desalination rate recovery rate can reach 99% or above, the cleaning efficiency is remarkably improved, the operation cost is reduced, and the service life of the membrane is prolonged.

The invention relates to the technical field of data processing, and discloses an automatic control method and system for wastewater desalination treatment based on the Internet of Things. The method comprises the following steps: acquiring a membrane surface image, an interface potential, an infrared spectrum, a transmembrane pressure difference, a feeding flow rate and a flocculation image; calculating a salt gradient attention feature vector according to the salt concentration difference value and the Beckey number; inputting the multi-modal data into a membrane pollution time sequence memory network to obtain a pollution development rate and a flocculant adding proportion; extracting a floc particle size parameter to obtain a flocculation effect score; and constructing a multi-objective function optimization solution to obtain a control instruction. The salt gradient attention mechanism and the membrane pollution time sequence memory network are introduced, and visual image recognition and multi-modal data fusion are combined, so that the problems of inaccurate membrane pollution state evaluation, low intelligent level of a control algorithm and insufficient multi-target collaborative optimization capability in the prior art are solved; the automation level and the treatment efficiency of wastewater desalination treatment are improved.

The invention relates to the technical field of water treatment, in particular to a self-adaptive desalting and recycling treatment device for high-silicon and high-salinity wastewater, which comprises a membrane desalting device, a descaling and dosing device positioned in front of the membrane desalting device, a collection and storage integrated module, a data collection module, an operation analysis module and a dynamic regulation and control module, the operation analysis module corrects the operation mode according to the historical incoming water volume data and the operation mode of the membrane desalination device in combination with the previous incoming water volume data; the dynamic regulation and control module adjusts the dosage of a descaling agent according to the current incoming water quality data, and determines the working state of the data acquisition module according to the pipeline basic data so as to determine the self-regulation mode of the membrane desalination device; the problem that the quality and quantity of high-silicon and high-salt wastewater are unstable due to changes of a front-end production process is solved, automatic switching of the running state of the membrane desalting device and dynamic adjustment of running data are achieved, then impact of the wastewater on a membrane is reduced, the membrane cleaning period is prolonged, and the running stability of the membrane desalting device is improved.

The invention discloses a treatment system and method for waste incineration fly ash washing liquid cooperating with flue gas purification, and the system comprises a semi-dry desulfurization tower, a dust remover, an ash silo, a washing tank, a buffer tank, a water supply preheater and a wet washing tower which are connected with a main flue of an incineration plant, the method comprises the following steps: transferring waste incineration fly ash collected in the system into the water washing tank, and adding water for washing to obtain water washing liquid and desalted fly ash; the method comprises the following steps: spraying fly ash water washing liquid by using a wet washing tower, recovering tail flue gas waste heat, deeply removing residual acid gas in flue gas, concentrating and reducing the water washing liquid, and controlling the spraying amount to adjust the concentration ratio so as to realize the separation and solid-liquid separation of chlorine salt; introducing the concentrated water washing liquid into a semi-dry desulfurization tower, atomizing the water washing liquid into fine liquid drops by using a rotary atomizer, contacting the fine liquid drops with hot flue gas, evaporating the fine liquid drops to dryness, and absorbing acid gas in the flue gas at the same time, thereby realizing zero emission of the water washing liquid and cooperating with flue gas purification. According to the invention, the problem of high energy consumption of fly ash washing liquid treatment is solved, and the resource utilization rate of the washing liquid is improved.

The invention belongs to the technical field of recycling of oily wastewater in water treatment, and provides a high-oil-content emulsified wastewater treatment process based on electrochemistry. Oil-containing wastewater enters the pretreatment unit, oil slick and suspended substances in water are removed through the pretreatment processes of filtration, air floatation, pH adjustment and the like, and the pH is adjusted to a proper range; the reacted oily wastewater enters an electrochemical device, and proper voltage is applied to an electrode, so that emulsified oil in the water is destabilized, and the purpose of demulsification is achieved; the oily wastewater enters an oil-water separation device, demulsified oil drops are coalesced, grow and float upwards, and recoverable oil is obtained on the upper layer of the device; after long-time operation, the water enters the regeneration unit, so that the electrochemical demulsification unit recovers good demulsification and oil removal effects. According to the invention, the treatment of various high-oil-content emulsified wastewater and the recovery of oil can be realized by regulating and controlling the voltage, and the method is suitable for electro-desalting wastewater, machining wastewater, cold rolling wastewater and the like.

The invention relates to the technical field of air flotation tanks, and discloses a dissolved air flotation separation device and an atmospheric and vacuum electro-desalting sewage pretreatment process, the dissolved air flotation separation device comprises a tank body, an oil outlet is arranged above the tank body, and a weir plate is arranged in the tank body. According to the device, a complete process from scum gathering to graded discharge is constructed through the scum gathering effect of the conical structure of the weir plate, the layered guide of the spiral flow deflector and the self-adaptive linkage of the detection paddle and the weir gate. The deflection angle of the detection paddle is in positive correlation with the viscosity and thickness of scum, the dynamic adjustment can be accurately converted into dynamic adjustment of the opening degree of the scum discharge port, the large opening degree is kept for rapid discharge when thin scum exists, the opening degree is reduced for screening dry scum when thick scum exists, the problem of scum accumulation or scum discharge with water is effectively avoided, and finally the high-purity dry scum discharge effect is achieved. The separation efficiency and the separation quality of the scum and the sewage are obviously improved.

The invention provides homologous and isomeric alkaline residue-based fluidized stabilized soil as well as a preparation method and application thereof, and belongs to the technical field of solid waste resource utilization. The alkali residue-based curing agent is prepared from the alkali residue after filter pressing, the slag, the desulfurized fly ash, the fly ash and the cement. According to the method, high-water-content pasty raw alkali residues, alkali residues obtained after desalination and salt fixation and furnace slag are used as the alkali residue-based matrix soil. The homologous and isomeric alkaline residues are different in structure and form, so that the homologous and isomeric alkaline residues can be used as matrix soil on one hand, and can be used for preparing the curing agent on the other hand, and physical and chemical reaction and particle size matching among different components are promoted and improved, so that the mechanical property of the homologous and isomeric alkaline residue-based fluid-state solidified soil is improved. By adding a proper amount of water and water reducing agent, the fluidity of the homologous isomeric alkaline residue-based fluid-state solidified soil can be adjusted, the construction requirement can be met, and excellent dense pouring performance is achieved.

The invention relates to the technical field of saline-alkali soil improvement, in particular to a control method for a saline-alkali soil improvement water quality desalination system. The method comprises the following steps: accurately determining the soil salinization degree through comprehensive analysis of saline-alkali soil multi-point sampling data and soil ion concentration; based on the soil salinization degree, the microstructure disintegration trend and the plant metabolism limitation condition are evaluated, and the linkage degradation characteristics and the ecological activity unbalance condition of the saline-alkali soil are comprehensively judged; further determining the degradation degree of a water source under the saline-alkali soil, and implementing targeted saline-alkali soil improvement treatment through an improved water quality desalination system; and finally, performing system defect evaluation based on the improved treatment effect, and performing control optimization on the water quality desalination system according to defect data. The water quality regulation and control of the saline-alkali soil are more efficient and accurate by optimally controlling the water quality desalination system.

The invention relates to the technical field of deep processing of sponge titanium, in particular to a broken-state high-chlorine sponge titanium particle dechlorinating and upgrading method. The method comprises the following steps: carrying out chlorination by adopting a three-stage process of washing desalination, vacuum dehydration and deep dechlorination; physical dechlorination through hot water washing: directly stripping chlorine salts on the surfaces and shallow layers of particles through dynamic water washing by utilizing the high-temperature dissolution characteristic; performing vacuum gradient treatment: performing low-temperature dehydration and oxygen blocking, and then performing high-temperature targeted removal of deep residual chlorine. The method has the beneficial effects that the dechlorination efficiency is multiplied, more than 60% of surface chlorine salt is pre-removed through water washing, and the subsequent vacuum dechlorination load is reduced.

The invention provides a water resource recycling system in a mining process and a recycling method thereof, and relates to the technical field of mining and mine wastewater utilization. The system comprises: a pretreatment module for collecting and removing suspended solids in wastewater and adjusting water quality to obtain pretreated water; the resource recovery module is used for recovering heavy metals and salts from the pretreated water and carrying out resourceful treatment on organic matters to obtain recovered water; the deep treatment module is used for degrading and recycling residual pollutants in water and further desalting to obtain treated water; the crystallization and solidification module is used for separating harmless salt and solidifying hazardous wastes from the treated water to obtain solidified bodies and discharge water reaching the standard; and the intelligent control module is used for monitoring operation parameters of each module in real time and carrying out dynamic optimization and early warning. The system realizes efficient recovery of heavy metals, salts and organic matters by aiming at complex wastewater containing heavy metals, high salts and organic matters generated by mining, and breaks through the limitation of traditional single resource recovery.

The invention relates to the field of specific calculation models, and discloses a natural regulation type salinized soil desalination simulation and multi-objective optimization configuration method, which comprises the following steps of: 1, data acquisition and earlier stage processing; 2, constructing a water and salt migration model; step 3, simulation analysis and scheme optimization; 4, carrying out substitution model training and multi-objective optimization; the final scheme is directly used for guiding engineering implementation, and specifically comprises the steps of determining the terrain adjustment amplitude, the position and depth of a drainage ditch, the micro-topographic relief scale, the earth filling and digging volume and shallow guide and drainage path configuration. The method has the beneficial effects that the natural drainage capacity of regional underground water can be remarkably improved, the effect that evaporation drives salt to move upwards is weakened, the rainfall infiltration capacity is improved, and the natural leaching effect is enhanced. The method is suitable for areas such as mud flats, salt pans and natural reserves where artificial engineering measures are not suitable to be taken, and has the advantages of low cost, high stability, ecological friendliness and the like.

The invention relates to a method for regulating and controlling porous carbon for capacitive desalination by utilizing negative pressure pulse flow. The method specifically comprises the following steps: placing the porous carbon in a heating furnace, continuously contacting the porous carbon with airflow at a high temperature, rapidly reducing the absolute static pressure of the gas in the furnace to be less than or equal to 85kPa every 8-100min during the contact period, then restoring to be close to the initial static pressure to form negative-pressure pulse airflow, and intermittently introducing the pulse airflow in this way until the appropriate contact time is reached. According to the invention, the specific surface area, the total pore volume and the capacitance desalination amount of the pore-containing carbon can be improved without increasing energy consumption; compared with constant-pressure airflow modified porous carbon, the reaction temperature, the reaction time or the gas consumption can be reduced under the condition of reaching the same carbon index.

The technology relates to the use of a high salinity produced water stream from a gas oil separation plant (GOSP), as a wash water stream for the desalter unit in a GOSP. The produced water stream is pretreated by a sequence of steps and subsequently desalinated by a ultra-high pressure reverse osmosis (UHP-RO) membrane. The UHP-RO produces a permeate stream and a reject stream. A portion of the permeate stream is reused as a wash water stream in the desalter unit of the GOSP.

The invention discloses an industrial control system and method for an ultrapure water treatment device, and the method comprises the steps: carrying out the deep excavation and normalization calculation of parameters, such as original pressure, flow, temperature, conductivity and the like, collected in the operation process of an ultrafiltration and reverse osmosis membrane; golden features (such as normalized water yield and desalination rate) reflecting the real performance state of consumables can be effectively extracted, and then the normalized time sequence data without environmental interference are further input into an advanced decline trend prediction model, so that the remaining effective life of the reverse osmosis membrane is assessed and predicted prospectively, and the real performance state of the consumables is predicted. And the control normal form conversion from passive response to active early warning is realized. In this way, the system can get rid of external interference and accurately recognize progressive performance degradation of the ultrafiltration membrane and the RO membrane, and therefore the intelligent operation and maintenance level of the ultrapure water treatment device is remarkably improved.

The invention relates to the technical field of soil improvement and ecological restoration, and discloses an ultra-stable mineralization in-situ salt fixation method for improvement of saline-alkali soil in an arid region and application of the ultra-stable mineralization in-situ salt fixation method. The invention provides a method for improving northwest inland saline-alkali soil based on combination of an ultra-stable mineralized in-situ salt-fixing soil conditioner, precise partitioning, biological improvement and salt-tolerant plant planting. According to the method, a salt elimination foundation is created through physical soil preparation, firstly, the soil alkalization degree and the salt content are rapidly reduced through an ultra-stable mineralization in-situ salt fixation soil conditioner, the physical structure of the soil is improved, and then rapid salt elimination and alkali inhibition, fertility cultivation and ecological reconstruction of the saline-alkali soil are finally achieved by constructing different plant planting modes and establishing a stable vegetation system. And a sustainable saline-alkali soil comprehensive treatment mode with good effect and low cost is formed.

The invention discloses a condensation brine desalination system for a greenhouse. The condensation brine desalination system comprises a condensation system, a heat storage system, a heat supply system, a power supply system, a water supplementing system and the greenhouse. When the system works, the compound paraboloid condenser gathers sunlight, then the sunlight is transmitted in a wave band mode through the frequency division glass, low-wave-band light drives photovoltaic power generation, and high-wave-band light is used for saline water interface evaporation; water vapor generated in the salt water desalination process is condensed by the condensing device to generate fresh water, and then the fresh water is introduced into the greenhouse, so that proper humidity and temperature in the greenhouse can be maintained while the fresh water required by irrigation is obtained; the condensation device recovers condensation heat, the condensation heat is stored through the heat storage system, and heat is supplied to the greenhouse through the buried pipe when the temperature is low at night. When sunlight is insufficient, the storage battery supplies power to the LED lamp in a light supplementing mode, and photosynthesis of plants is guaranteed. The system is suitable for regions lacking fresh water resources but sufficient in saline water and brackish water, and has the characteristics of self-sufficiency, high scale adaptability, low energy consumption and the like.

The invention discloses a preparation method of salt crystallization prevention aerogel with a vertical microchannel structure. The preparation method comprises the following steps: step 1, preparing a PPy-PDA composite photo-thermal material; step 2, preparing a PVA / HPC solution; step 3, preparation of a PVA / HPC coated PPy-PDA precursor solution; and step 4, preparing the PVA / HPC coated PPy-PDA composite aerogel with the vertical micro-channel structure. The salt crystallization prevention aerogel with a vertical micro-channel structure is prepared by utilizing a directional freezing and chemical cross-linking technology, the salt crystallization prevention aerogel has excellent photo-thermal response capability and energy conversion efficiency, and the vertically arranged micro-channel structure can promote rapid directional transportation of moisture and salt ions and inhibit salt accumulation and crystallization; meanwhile, the chemical crosslinking strategy enhances the mechanical stability and durability of the gel network. The preparation process is controllable, and the material is green and environment-friendly and can be applied to the field of solar interface evaporation desalination of high-salinity wastewater.

The invention belongs to the technical field of wastewater treatment, and particularly relates to a high-salinity wastewater nanofiltration and desalination integrated treatment method based on MBR. The invention aims to solve the problem of unstable high-salinity wastewater treatment effect of the existing MBR unit. The method comprises the following steps: introducing high-salinity wastewater into a hydraulic homogenizing unit, then introducing into a chemical softening unit, treating, and introducing into a biodegradation unit. The inlet water of the biodegradation unit comprises the outlet water of the chemical softening unit and the nanofiltration concentrated solution from the quality-divided recycling unit; and the effluent of the biodegradation unit is introduced into the chemical flocculation unit and then is introduced into the security filtration unit. And effluent of the security filtration unit enters the nanofiltration unit. Effluent of the nanofiltration unit comprises desalted water and nanofiltration stock solution, the desalted water is sent out of the treatment section, and the nanofiltration stock solution is introduced into the quality-divided recycling unit. The effluent of the quality-divided recycling unit comprises a nanofiltration concentrated solution and a nanofiltration waste solution, the nanofiltration waste solution is sent out of the treatment section, and the nanofiltration concentrated solution is introduced into the biodegradation unit.

This invention discloses a multi-stage treatment method for photovoltaic fluoride-containing wastewater based on semi-permeable membrane separation and the semi-permeable membrane thereof. The multi-stage treatment method includes the following steps: S1, primary treatment; S2, secondary treatment; S3, tertiary treatment. This method first performs primary treatment on the initially high-impurity fluoride-containing wastewater, which can rapidly degrade organic matter and heavy metals in the wastewater. Then, secondary treatment removes most of the heavy metal ions from the wastewater. Crystallization can effectively remove dissolved salts from the wastewater, while electrodialysis can concentrate and recover metal ions from low-concentration wastewater and desalinate the wastewater. Finally, tertiary treatment efficiently separates fluoride ions from the wastewater, and reverse osmosis filtration further removes the remaining fluoride ions and other dissolved salts, ensuring effluent quality. The semi-permeable membrane is a modified polyethersulfone membrane, and water quality is further purified by adding microorganisms.

The application relates to the technical field of data processing, and discloses a wastewater desalination treatment automatic control method and system based on an Internet of Things. The method comprises the following steps: collecting a membrane surface image, an interfacial potential, an infrared spectrum, a transmembrane pressure difference, a feed flow and a flocculation image; calculating a salt gradient attention feature vector according to a salt concentration difference value and a Berkeley number; inputting the membrane pollution time sequence memory network combined with multi-modal data to obtain a pollution development rate and a flocculant dosage ratio; extracting a floc particle size parameter to obtain a flocculation effect score; and constructing a multi-objective function optimization solution to obtain a control instruction. By introducing a salt gradient attention mechanism and a membrane pollution time sequence memory network, combining visual image recognition and multi-modal data fusion, the problems of inaccurate membrane pollution state evaluation, low intelligent level of a control algorithm and insufficient multi-target collaborative optimization capability in the prior art are solved, and the automation level and processing efficiency of wastewater desalination treatment are improved.

The invention provides a resource recovery system and method for wastewater containing sodium citrate and sodium sulfate, and the system comprises a buffer mixing unit which is used for collecting wastewater and multiple paths of reflux liquid; the first nanofiltration assembly is used for preliminarily separating the mixed solution into a first concentrated solution enriched with sodium citrate and a first permeate enriched with sodium sulfate; the sodium citrate recovery branch is used for carrying out secondary concentration and evaporative crystallization on the first concentrated solution through a second nanofiltration assembly and a first crystallization unit so as to recover sodium citrate crystals or a high-concentration sodium citrate solution; the sodium sulfate recovery branch is used for carrying out concentration and freezing crystallization on the first permeate through a desalination concentration assembly and a second crystallization unit so as to recover sodium sulfate or mirabilite; and permeate liquid of the second nanofiltration assembly, mother liquid of the first crystallization unit and mother liquid of the second crystallization unit flow back to the buffer mixing unit. According to the invention, high-efficiency separation and high-purity recovery of two salt resources are realized, and the energy consumption is obviously reduced.

The invention discloses a sebacic acid production wastewater treatment and recycling process which comprises the following steps: a heat pump evaporation system comprises an evaporator, a compressor, a circulating pump and a heating heat exchanger, sebacic acid production wastewater is efficiently desalted through the heat pump evaporation system, and obtained steam enters a catalytic combustion device for catalytic combustion reaction; the final effluent is reused for an evaporation process and a crude sebacic acid washing process in the production process. Low-level heat energy of the system is recovered through the heat pump technology, evaporation energy consumption is remarkably reduced, gas-phase oxidation removal of organic matter is achieved through catalytic combustion, and secondary pollution is avoided; meanwhile, closed-loop recycling of wastewater is achieved, fresh water consumption and wastewater discharge are greatly reduced, and the comprehensive advantages of being low in operation cost, high in treatment efficiency, high in environmental friendliness and the like are achieved.

This application discloses a desalination system and method for kitchen waste. The system includes a filter press chamber, a feeding chamber, a washing chamber, an oil-water buffer tank, and a solid material silo connected in sequence. The filter press chamber is equipped with a cross-shaped rotating filter plate and a filter press pusher cylinder to achieve preliminary desalination of kitchen waste through filter pressing. The feeding chamber transports the solid material after filter pressing to the washing chamber through a feeding mechanism. The spray pipes and circulating pump in the washing chamber form a hot water circulating spray system. The oil-water mixture at the bottom of the washing chamber enters the oil-water buffer tank through an overflow hole, and the oil and water are automatically separated by a capacitive oil level sensor and an electrically controlled valve. The receiving screen sends the desalinated solid material into the solid material silo. By adopting the above solution, this invention can solve the technical problems of low salt removal efficiency and waste of resources, difficulty in separating oil and water layers that easily leads to secondary pollution, low degree of process automation resulting in cumbersome and unstable operation, low equipment integration and poor compatibility with existing production lines of livestock and poultry manure treatment enterprises in the current pretreatment of kitchen waste.

This invention discloses a controlled drainage ecological regulation method for synergistic irrigation and drainage to reduce salinity and alkalinity, belonging to the field of soil remediation technology. The method includes: a soaking and dissolving stage, where, with the drainage outlet closed, low-flow irrigation is performed at the farthest point from the drainage ditch, allowing a large amount of irrigation water to enter the small pores of the soil profile and soak and dissolve salts; a diffusion and dispersion stage, where the drainage outlet is raised, and with the outlet height lower than the field surface, large-flow irrigation is performed evenly, filling all pores of the soil profile with irrigation water and enhancing the diffusion and dispersion of salts; a convection desalination stage, where the drainage outlet is opened, and with the outlet depth level with the drainage ditch depth, saline water is evenly discharged from the soil; and a water-saving and emission-reduction stage, where the drainage outlet depth is lower than the crop root zone, breaking the connectivity of small pores and preventing soil salts from moving upwards during crop growth. This synergistic irrigation and drainage achieves the three major goals of salt control, water conservation, and emission reduction.

The application discloses a kind of dispersing water supplementing devices for coastal plain river network direct ammonia oxidation denitrification of reclaimed water, including the pretreatment tank, direct ammonia oxidation device and water supplementing device connected in sequence, the upper electrode and lower electrode with longitudinal alignment hole are horizontally arranged in funnel-shaped desalination settlement area of the bottom of pretreatment tank, aeration disc is arranged at the top of desalination settlement area, flocculating agent storage tank is arranged in the upper part of pretreatment tank, its injection pipe is immersed below water surface, desalination settlement area is connected with direct ammonia oxidation device by communicating pipe, and the filler filled with direct ammonia oxidation microorganism is filled in the inside of direct ammonia oxidation device, the bottom of direct ammonia oxidation device is connected with water supplementing device, and water supplementing device is connected with a plurality of primary water distribution branch pipes through water distribution main pipe.The device can realize the maximization of direct ammonia oxidation unit denitrification efficiency through water supplementing front end pretreatment and water supplementing tail end treatment, and the maximization of coastal plain river network water supplementing benefit is realized through the designed dispersing water supplementing device.

The utility model relates to a desalting cleaning machine with a wind power draining function, which comprises a cleaning water tank of the desalting cleaning machine, an inclined discharging groove seat is arranged on one side of the cleaning water tank, an inclined discharging conveying belt is arranged in the discharging groove seat, and an inclined blowing component is arranged right above the middle and upper parts of the discharging conveying belt. The air blowing assembly comprises a rectangular positioning mounting frame, and the front side and the rear side of the positioning mounting frame are fixedly connected to side plates on the front side and the rear side of the discharging groove seat through mounting supporting legs; a plurality of blowing pipes which are longitudinally, linearly and uniformly distributed are inserted into the positioning mounting frame, the two ends of each blowing pipe are pivoted to the front side frame and the rear side frame of the positioning mounting frame respectively, and a plurality of blowing nozzles are fixedly connected to the lower surface of each blowing pipe. According to the desalting cleaning machine, multiple air blowing nozzles are adopted for blowing air to completely blow pickled food on the discharging conveying belt, meanwhile, the air blowing amount and angle can be adjusted, adjustment is convenient, and different draining requirements are met.