1181 results about "Desalination" patented technology

The invention relates to the technical field of saline-alkali soil improvement, in particular to a saline-alkali soil treatment and improvement method which comprises the following steps: S1, early-stage investigation and planning; s2, physical improvement; s3, chemical improvement; s4, biological improvement; s5, irrigation improvement; s6, later monitoring and maintenance; according to the saline-alkali soil treatment and improvement method, a traditional single improvement mode is broken through, physical, chemical, biological and engineering technologies are fused, a systematic improvement scheme is formed, and physical improvement effectively improves the soil structure and accelerates salt discharge through land leveling, deep ploughing, upturned soil sunning and concealed pipe laying for drainage; a soil conditioner and an acidic material are precisely applied for chemical improvement, and the soil acidity and alkalinity and ion composition are adjusted; in biological improvement, salt is absorbed by virtue of salt-tolerant plants and microbial agents, and soil microbial communities are improved; a fresh water resource or salt water desalination technology is reasonably utilized for irrigation improvement, and salt leaching and water resource recycling are achieved; through the synergistic effect of multiple means, the salt content of soil can be more efficiently reduced, and the soil structure is improved.

The invention discloses an integrated process for cooperative treatment and up-to-standard discharge of industrial wastewater and domestic wastewater of a power plant, and relates to the field of cooperative treatment of wastewater and sewage, and the integrated process comprises the following steps: configuring a raw water collection system, setting a raw water source, configuring a multi-stage filtration and heating pretreatment process, configuring an ultrafiltration membrane system, and setting a fine filtration path. A first-stage reverse osmosis system is configured, reverse osmosis parameters are set, a second-stage reverse osmosis system is configured, a low-conductivity water treatment path is set, a mixed ion exchanger is configured, a desalted water output path is set, a standby pool body is set, and the adjusting capacity is set. A raw water collecting system, a multi-stage filtering and heating pretreatment process, an ultrafiltration membrane system, a first-stage reverse osmosis system, a second-stage reverse osmosis system, a mixed ion exchanger and a standby pool body are sequentially arranged in the process. The problems of unstable effluent quality, insufficient deep desalination capability and poor emergency regulation capability in a traditional power plant wastewater treatment mode can be effectively solved.

The invention relates to the technical field of water treatment, in particular to a high-recovery-rate short-process salt-tolerant reverse osmosis system and treatment method.The system comprises a pretreatment unit, a sensor monitoring unit, a self-adaptive pressure-flow coupling control unit, an intelligent operation and maintenance unit and a gradient boosting reverse osmosis membrane set. According to the invention, ultrahigh recovery rate and desalination performance are realized, gradient boost membrane module design is combined with concentration polarization inhibition technology, membrane surface flow state distribution is optimized, osmotic pressure influence is significantly reduced, pressure-flow coupling control and concentrated water excess pressure energy recovery technology are integrated, energy dynamic cyclic utilization is realized, energy consumption is reduced, and the method is suitable for industrial production. By monitoring the membrane flux attenuation rate and the transmembrane pressure difference in real time and dynamically optimizing a pulse cleaning strategy, dynamic optimization of high-salinity wastewater treatment is realized, and the problems of low recovery rate, high energy consumption and quick membrane pollution in high-salinity wastewater treatment are solved.

The invention discloses a regulation and control method for stably improving the water quality of water produced by a reverse osmosis system of a power plant, and relates to the field of water quality regulation and control, which comprises the following steps: configuring a water inlet flow regulation device, performing initial setting, configuring the position of an online sensor, performing data acquisition, setting judgment rules of turbidity, differential pressure and transmembrane pressure difference, and determining the water quality. And configuring a flocculant adding device and adding control logic, configuring a backwashing and adding linkage control state machine, and carrying out data smoothing, trend analysis and self-adaptive threshold adjustment. When the water quality of the raw water fluctuates for a short time or the pollution load is increased, dynamically adjusting the water inlet flow, the backwashing intensity and the flocculant adding concentration based on parameters such as turbidity, pollution index, conductivity and pressure difference which are acquired by an online sensor in real time; and meanwhile, the concentrated water reflux proportion and the high-pressure pump frequency are automatically corrected by continuously calculating the desalting rates of the first-stage and second-stage reverse osmosis devices, so that the running state of the membrane component is kept in an optimal interval.

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 utility model belongs to the technical field of solid waste treatment, and particularly relates to a fly ash harmless and resourceful treatment system. The harmless and recycling treatment system for the fly ash comprises a mixing and stirring unit, a fluidized bed drying and preheating unit, a dioxin catalytic cracking unit, a washing and desalting unit, an evaporative crystallization and salt production unit and a flue gas treatment unit, the mixing and stirring unit is used for stirring and mixing fly ash, a curing agent and a catalyst according to a set proportion; a gas outlet of the dioxin catalytic cracking unit is connected with a gas inlet of the fluidized bed preheating and drying unit, a gas outlet of the fluidized bed preheating and drying unit is connected with a gas inlet of the evaporative crystallization salt-making unit, and a gas outlet of the evaporative crystallization salt-making unit is connected with a gas inlet of the flue gas treatment unit. According to the utility model, the energy consumption is greatly reduced and the cost is saved while harmless and resourceful treatment of the fly ash is realized.

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, and discloses a method for circularly inducing crystallization, hardness removal and desalination of calcium carbonate. Adding the seed crystal into high salt water; adding sodium hydroxide into the heavy salt water; adding sodium carbonate to generate a supersaturated solution; introducing the solution containing the calcium carbonate crystal nucleus into crystallization equipment; treating the reacted solution through solid-liquid separation equipment; further desalting the water body subjected to hardness removal by adopting a membrane separation mode; collecting and treating the formed calcium carbonate precipitate, and recovering the precipitate by adopting a separation technology; by adopting the synthesized vaterite type seed crystal, the hardness removal and desalination efficiency is remarkably improved in the cyclic induced crystallization process of calcium carbonate. Compared with the traditional non-synthetic seed crystal, the synthetic seed crystal has higher surface area and uniformity, so that the combination of calcium ions and carbonate ions can be more quickly induced to form a stable crystal nucleus, and the overall effect of the reaction is finally improved.

The invention belongs to the technical field of road deicing, and particularly relates to an environment-friendly snow and ice removing vehicle which comprises a vehicle body, an ice and snow removing device, a heating system and a water treatment system, the vehicle body is provided with an equipment bin, an ice and snow melting bin and an anti-freezing water bin, and a PV / T device used for providing electric energy for a motor and a vehicle-mounted hydrogen production device of the vehicle body is laid on the vehicle body; the ice and snow removing device is used for conveying ice and snow into the ice and snow melting bin; the heating system is used for heating ice and snow in the ice and snow melting bin; the water treatment system comprises a cyclone desanding device, an electrochemical disinfection device and a reverse osmosis device which are sequentially communicated, the cyclone desanding device is communicated with the ice and snow melting bin and used for removing large-particle impurities in water, the electrochemical disinfection device is used for removing microorganisms in the water, a water outlet of the reverse osmosis device is communicated with the anti-freezing water bin, and a water outlet of the reverse osmosis device is communicated with the ice and snow melting bin. And the water desalted and purified by the reverse osmosis device is discharged into the anti-freezing water sump. The system has the beneficial effects that the energy utilization efficiency is improved, and cyclic utilization of water resources is achieved.

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 relates to the technical field of soil remediation and saline-alkali soil treatment, and discloses a nano-carbon-based slow-release saline-alkali soil conditioner and a gradient controlled release method thereof.The formula comprises a layered nano-carbon matrix, a humic acid intercalation compound, a pH response type cross-linking agent, a calcium ion modifier and a phosphate radical modifier; the method comprises the following steps: constructing a self-regulation repair system for synchronously optimizing salt reduction, nutrient supply and ion balance through a three-dimensional synergistic mechanism of pH response type sodium ion targeted adsorption, microbial activity driven nutrient controlled release and calcium-sodium dynamic replacement. A nano carbon-humic acid layered composite structure is used for synergic desalination and slow-release fertilizer supply, a Ca < 2 + >-PO4 < 3-> gradient ion replacement system is combined for synchronous salt reduction and structure fixation, a pH response coating technology is used for realizing accurate release of nutrients triggered by microbial activity, and a three-dimensional interpenetrating network and graded pores are used for guaranteeing the long-acting stability of the material. And finally, multiple repairing functions are integrated into a single material.

The invention belongs to the technical field of oil field gathering and transportation systems, and particularly relates to a combined crude oil dehydration and desalination treatment device which comprises a shell, a pretreatment chamber is arranged at one end in the shell, an ultrasonic demulsification chamber is arranged on one side of the pretreatment chamber, and an electric dehydration settling chamber is arranged on one side of the ultrasonic demulsification chamber. Through the combined design of ultrasonic waves and an electric field, the efficiency and adaptability of crude oil dehydration and desalination are improved, oil-in-water and water-in-oil particles can be effectively opened through the mechanical oscillation effect generated by the ultrasonic generator in the ultrasonic demulsification chamber, free-state oil drops and water drops are formed, and the oil-in-water and water-in-oil particles can be effectively removed. An alternating-current electric field and a direct-current electric field which are respectively formed by the grid plate and the vertical electrode plate can be used for coalescing and settling water drops in oil under the actions of dipole coalescence, oscillation coalescence, electrophoresis coalescence and the like, and due to the synergistic action of the double electric fields, the quality of the dehydrated crude oil is improved, the volume fraction of water in the crude oil is reduced, the power consumption is reduced, and the stability of the electric fields is enhanced.

The invention provides a method for determining the washing stage number of a dedusting ash washing desalination system and electronic equipment, and the method comprises the steps: firstly determining the first alkali metal salt content of a filter cake generated by a first-stage washing desalination system, judging whether the first alkali metal salt content is smaller than or equal to the alkali metal salt content in a sintering ingredient, and if yes, determining the first-stage washing desalination system; determining the washing stage number of the dedusting ash multi-stage washing desalination system to be 1, if not, starting the ith-stage washing desalination system to enter a working state, determining the current alkali metal salt content of a filter cake generated by the ith-stage washing desalination system, and judging whether the current alkali metal salt content is smaller than or equal to the alkali metal salt content in the sintering ingredients or not; if yes, i corresponding to the ith-stage washing desalination system serves as the washing stage number of the dedusting multi-stage washing desalination system; and if not, assigning i + 1 to i. According to the method, the source of the fly ash does not need to be determined, the washing stage number of the fly ash washing desalination system can be accurately determined under the condition that the components of the fly ash are not determined, and favorable guidance is provided for production.

The utility model provides a process system for recycling electroplating comprehensive wastewater, which relates to the technical field of wastewater treatment and is characterized in that a liquid inlet of a primary electrodeionization device is communicated with a primary wastewater treatment unit, and a fresh water outlet of the primary electrodeionization device is communicated with a secondary wastewater treatment unit; a concentrated water outlet of the first-stage electrodeionization device is communicated with the second-stage electrodeionization device; a fresh water outlet of the secondary electrodeionization device is communicated with the primary electrodeionization treatment device, and a concentrated water outlet of the secondary electrodeionization device is communicated with the solid-liquid separation device; a liquid outlet of the solid-liquid separation device is communicated with the evaporation device; the evaporation device comprises a condensed water outlet and a byproduct salt outlet, and the condensed water outlet is communicated with the secondary wastewater treatment unit; a produced water outlet of the secondary wastewater treatment unit is communicated with the produced water collecting tank; a waste liquid outlet of the second-stage wastewater treatment unit is communicated with a second-stage electrodeionization device, so that pollutants such as heavy metal ions and organic matters in wastewater can be removed, and cyclic utilization of water resources and recovery of salt resources are realized.

The invention provides a collaborative optimization method and device for a desalted water system and application, and belongs to the technical field of water treatment.According to the method, in the technological process of desalted water, through the synergistic effect of waste heat recovery, intelligent backwashing control, an efficient desalting process and resource recycling, system energy consumption is reduced, the water recovery rate is increased, and the energy consumption is reduced. Wastewater discharge is reduced, and even wastewater zero discharge is achieved. A grey water raw water heat exchanger is arranged at the upstream of the raw water tank, grey water is subjected to heat exchange and cooling through the grey water raw water heat exchanger, and fresh raw water is communicated with the raw water tank after being subjected to heat exchange and temperature rise through the grey water raw water heat exchanger; the raw water tank is connected with the ultrafilter, the downstream of the ultrafilter is connected with the fiber filter, and the fiber filter is connected with the efficient cation bed; the efficient cation bed is connected with a decarburizer which is connected with a middle water tank; the middle water tank is connected with a high-efficiency anion bed which is connected with a mixed bed; the mixed bed is connected with a desalted water tank. The invention solves the problems of high energy consumption, high water consumption and difficulty in wastewater treatment in the traditional process. Zero discharge of wastewater is realized, and the purity of the prepared pure water is higher.

The invention discloses a method for improving saline alkali soil through organic-inorganic coupling, and relates to the technical field of soil treatment.The inner side of a series-connection whole supporting frame is equidistantly provided with a plurality of transposition motors through motor bases, output shafts of the transposition motors are connected with transposition gears in a clamped mode, and the top end of the series-connection whole supporting frame is rotationally connected with an integration gear; the device effectively solves the problems that in the prior art, inorganic materials and organic materials are directly put into soil, pre-desalination and dealkalization treatment is not carried out on the soil, the soil is not subjected to salt removal and alkali removal treatment, and the soil is not subjected to salt removal and alkali removal treatment, so that the soil is not subjected to salt removal and alkali removal treatment, and the soil is not subjected to salt removal and alkali removal treatment. The saline-alkali environment affects the reaction speed of inorganic materials and organic materials with the soil, and through pretreatment desalination and independent reaction of part of the inorganic materials, neutralization treatment and salt and alkali reduction treatment of the soil are achieved, so that the saline-alkali concentration of the soil is reduced, and the situation that the overall reaction speed is affected by high-concentration saline-alkali is avoided.

The invention provides a sintering dedusting ash washing desalination treatment method, system and equipment and a storage medium, the ith-stage washing desalination system is started to enter a working state, the alkali metal salt content of a filter cake generated by the ith-stage washing desalination system is determined, and whether the alkali metal salt content is smaller than or equal to the preset alkali metal salt content or not is judged; if yes, a filter cake generated by the ith-stage washing desalination system is sent to a sintering burdening procedure, and if not, whether the ith-stage washing desalination system is the last-stage washing desalination system or not is judged; if yes, a filter cake generated by the ith-stage washing desalination system is sent to the slurry tank of the first-stage washing desalination system to participate in washing again, and if not, i + 1 is assigned to i, and a filter cake generated by the (i-1) th-stage washing desalination system is sent to the ith-stage washing desalination system. The alkali metal salt content of the dedusting ash is judged, the washing stage number is reduced as much as possible while it is guaranteed that alkali metal enrichment cannot be caused when the filter cake enters sintering, and therefore the equipment loss is reduced, and the production cost is reduced.

The invention belongs to the technical field of energy storage batteries, and particularly relates to a desalting, dehumidifying and cooling integrated thermal management device and method for a marine environment energy storage battery. The device is composed of an energy storage battery module, an air inlet dehumidification and desalination module, an air return reprocessing module, a salt crystallization and separation module, a cold source heat exchanger and a heat source heat exchanger. Wherein the inlet air dehumidification and desalination module cools inlet air by utilizing a first solvent and inlet air cross flow heat exchange mode, meanwhile, the first solvent dissolves salt mist ions in inlet sea wind, and the purposes of reducing the dew point temperature and dehumidifying the inlet sea wind are further achieved; in order to ensure water-salt concentration balance of the first solution, a salt crystallization precipitation module and a return air retreatment module are adopted to jointly adjust the concentration of the first solution. A solution is provided for safe and reliable operation of the energy storage battery system under the ocean high-temperature, high-humidity and high-salt links.

The invention relates to a three-stage chamber salt acid-alkali treatment system based on electrochemical reaction, which comprises a plurality of three-stage chamber electrochemical reaction units which are communicated with one another, and each three-stage chamber electrochemical reaction unit is provided with three independent chambers which are separated by an electrolytic diaphragm, the three independent chambers comprise an anode reaction chamber, a desalting chamber and a cathode reaction chamber which are sequentially arranged, an anode bar is arranged in the anode reaction chamber, and a cathode bar is arranged in the cathode reaction chamber; water inlets are formed in the side walls of the lower parts of the anode reaction chamber, the desalting chamber and the cathode reaction chamber; and water outlets are formed in the side walls of the upper parts of the anode reaction chamber, the desalting chamber and the cathode reaction chamber. The method has the effects of realizing resourceful treatment of the salt-containing wastewater, improving the water treatment efficiency of the salt-containing wastewater and reducing the water treatment cost.

This invention belongs to the field of biomass subcritical fertilizer production, specifically relating to a mobile photovoltaic-powered subcritical fertilizer production system and its product application aimed at reducing nitrogen and phosphorus emissions, increasing efficiency, and resource-based disposal of high-moisture waste. It includes a solar preheating system, a photovoltaic power supply system, an auxiliary heating system, a hydrothermal reaction system, and a post-treatment system. The photovoltaic power supply system and auxiliary heating system are connected to the electrical load of the hydrothermal reaction system; the hydrothermal reaction system is connected to both the solar preheating system and the post-treatment system. This invention utilizes electrodialysis technology to desalinate the hydrothermal charcoal before returning it to the field. Through electrodialysis, the desalination rate of the charcoal reaches 45%-90%, and the conductivity of the desalinated charcoal is 1.40-6.75 mS / cm. The desalinated charcoal significantly increases crop yield; chlorophyll content increases by 25.5-67.5%, fresh weight increases by 18.5%-175%, and lettuce root length increases by 37.0%-98.2%. The high degree of desalination avoids the negative effects of salt stress on lettuce roots.

The invention relates to the technical field of reclaimed water recycling, and particularly discloses a high-speed service area reclaimed water recycling process which comprises the following steps: step 1, fibrous membrane filtration: filtering wastewater by adopting a fibrous membrane; 2, activated carbon filtration: enabling the effluent in the step 1 to pass through an activated carbon adsorption device; step 3, sodium hypochlorite sterilization: sodium hypochlorite is added into the effluent obtained in the step 2; step 4, intercepting iron and manganese ions: intercepting metal ions from the effluent in the step 3 by using a mixed filter material; step 5, precise filtration: intercepting particulate matters from the effluent in the step 4 by adopting a PP cotton filter element; and step 6, reverse osmosis process: desalting and purifying the filtered water in the step 5 through a reverse osmosis membrane assembly, and collecting reverse osmosis produced water as recycled water reaching the standard. The technical problem that the brake spray water cannot be supplemented to a truck in the service area in time due to the fact that reclaimed water recycled by a reclaimed water recycling technology in the high-speed service area cannot meet the requirement of the brake spray water is solved.

The invention discloses an impurity removal device and an impurity removal method for salt separation crystallization mother liquor of chemical high-salt wastewater, and belongs to the technical field of comprehensive utilization of water resources. The impurity removal device comprises a high-density sedimentation tank for receiving high-salinity wastewater salt separation crystallization mother liquor; the first-stage reactor is connected with the high-density sedimentation tank through a pipeline; the second-stage reactor is connected with the first-stage reactor through a pipeline; the three-stage reactor is connected with the filtering device through a pipeline, the filtering device is connected with the mesoporous adsorption tower through a pipeline, the mesoporous adsorption tower is connected with the chelating resin tower through a pipeline, and the chelating resin tower is connected with the modified zeolite adsorption tower through a pipeline. The method has the advantages that equipment configuration is reasonable, and good stability and operability are achieved; the method provided by the invention has outstanding process route originality and low treatment cost, and realizes liquid phase treatment and high-valued cyclic utilization of the chemical high-salinity wastewater salt separation crystallization mother liquor.

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.