95 results about "Pollution water" patented technology

The invention relates to a crown ether-loaded solid bubble lithium adsorbent as well as a preparation method and application thereof, belongs to the technical field of lithium adsorption, and solves the problems of low adsorption rate, low adsorption capacity, poor ion selective adsorbability, complex synthesis process, difficulty in separation and recovery, poor regeneration capacity and water environment pollution during lithium extraction of an existing crown ether material. The method comprises the following steps: activating solid bubbles by adopting an alkaline solution; modifying the activated solid bubbles by using a coupling agent; and reacting a crown ether monomer with a lithium salt in a solvent, adding the modified solid bubbles, a catalyst, a cross-linking agent and an initiator, continuously reacting, carrying out solid-liquid separation, washing, drying and eluting. The method is simple and environment-friendly, the stably immobilized crown ether is introduced to the surface of the solid bubble through chemical grafting, and the lithium adsorption performance of the crown ether is improved; the solid bubbles with low density and high stability can endow the adsorbent with the self-floating characteristic, the regeneration performance of crown ether is remarkably improved, and pollution to the water environment is reduced.

This invention discloses a method for diagnosing sewage leaks in drainage pipes based on the introduction of clean water, specifically relating to the field of municipal engineering. The method includes: collecting water samples from adjacent manholes at both ends of the pipe to be inspected on a sunny day; pre-treating the samples and then performing fluorescence detection to obtain an initial fluorescence value F; introducing clean water at a known flow rate q0 into the downstream manhole's inlet pipe; after the clean water and sewage are fully mixed, collecting a water sample from the downstream manhole; pre-treating the sample and then performing fluorescence detection to obtain a fluorescence value F' from the downstream manhole; and introducing clean water at a known flow rate into the upstream manhole's inlet pipe; after the clean water and sewage are fully mixed, collecting a water sample from the upstream manhole; pre-treating the sample and then performing fluorescence detection to obtain a fluorescence value F'' from the downstream manhole. By introducing clean water into the upstream and downstream manholes and combining it with the fluorescence conservation principle, the leakage amount and uncertainty are calculated, thus solving the problems of high cost of video detection, low accuracy of flow monitoring, and difficulty in tracing the source of low-pollution water.

The application discloses a hydraulic split-flow well, which comprises a water passing corridor and a cyclone tank. The upstream of the water passing corridor is used for inflow of sewage and combined flow, and initial split-flow is performed by using the cyclone generated by the shape of the water passing corridor and different flow tank height differences. The cyclone tank is communicated with the downstream of the water passing corridor, and the cyclone tank has an annular inner wall and a central water collecting opening, so that water forms a cyclone in the cyclone tank, and solid pollutants such as mud in the water are deposited on the inner wall by centrifugal force, and intercepting water with the solid pollutants removed is discharged through the water collecting opening. The above-mentioned hydraulic split-flow well separates solid pollutants such as mud in sewage and combined flow by hydraulic form control, and the cyclone can make the mud in the water deposit, so that initial rainwater in the intercepting well and dry flow sewage are preliminarily treated. Therefore, the problems of excessive mud deposition in municipal rainwater pipelines and excessive suspended pollutants and BOD in the water discharged from the intercepting well to pollute the water body are solved.

The invention provides a slope cropland runoff pollution water sample collection device and method, and belongs to the technical field of pollution water sample collection. Comprising a telescopic mechanism, the end of the telescopic end of the telescopic mechanism is fixedly connected with a telescopic end connecting base, and the end of the base end of the telescopic mechanism is fixedly sleeved with a handheld base sleeve; the water sample collection mechanism is used for collecting a runoff pollution water sample of the slope cropland and comprises a water sample collection assembly group and an auxiliary extension assembly group which are sequentially arranged on a telescopic mechanism; wherein the water sample collection assembly group comprises a collection driving assembly and a sample collection head which are connected with each other. By arranging the water sample collection mechanism, on the basis of impurity cleaning, pollution prevention, precise control and damping protection, the problems that an existing slope cropland runoff pollution water sample collection device is difficult to operate, samples are prone to pollution, and conditions are difficult to unify are comprehensively solved; a high-quality slope cropland runoff pollution water sample collection scheme is provided for agricultural scientific research and ecological monitoring.

Apparatus and method for decontaminating both contaminated waters and sorbent filter media, either separately or simultaneously, in a single system. Contaminants in a liquid flowing through a reaction chamber are removed by first generating a plasma within the liquid in the chamber, with the contaminants being broken into smaller particles at the interfaces between the generated plasma and the liquid. The combined plasma-liquid solution is then passed through a solid filter, which captures the smaller contaminant particles to decontaminate the liquid. To decontaminate the filter media, plasma flows through the filter material without the presence of liquid, the plasma reacting with the filter material to remove contaminants previously adsorbed by the filter.

This invention discloses a non-contact portable sampling device for polluted water bodies, comprising a support, a sampling component, a deployment and retraction component, and a collection component. The sampling component includes a mounting sleeve, a ring-shaped sampling tube, and a sampling pump. The deployment and retraction component includes a mounting plate and a first winding reel snapped onto the mounting plate, with a first pull cable connected to the mounting sleeve on the first winding reel. The collection component includes a transfer box mounted on the support and a collection bottle inside the transfer box. The device structure of this invention is reasonably designed. By using the support to suspend the sampling component on the water surface, the entire sampling work can be completed by the staff standing on the riverbank, reducing the risk of staff falling into the river and improving the safety of the device. At the same time, the device of this invention does not require staff to come into contact with the water sample during use, which reduces the harm caused by polluted water to the staff and also avoids the water sample being contaminated by external factors, thus affecting the water sample detection results.

The present application relates to a kind of salt-tolerant bacteria generator for open water, water-soluble-microbial degradation type container is placed in the cavity of internal airtight mixed with salt-tolerant bacteria and growth factor biological carrier.There is beneficial effect: when salt-tolerant bacteria generator is put into open water, water-soluble-microbial degradation type container in water-soluble material will start to dissolve when meeting water, let water-soluble-microbial degradation type container form pore structure on wall, and sewage can flow into its inner cavity through the pore structure, and contact salt-tolerant bacteria and growth factor, growth factor will prompt salt-tolerant bacteria to start quickly, to carry out depollution treatment to sewage, salt-tolerant bacteria can also be released and enter open water through pore structure, the salt-tolerant bacteria generator can provide the environment condition suitable for the growth of salt-tolerant bacteria, and has salt-tolerant bacteria slow-release function, to gradually release salt-tolerant bacteria to contaminated water body, so that salt-tolerant bacteria have time and condition to gradually adapt to contaminated water area, while exerting long-acting pollutant reduction effect.

The invention provides a riverway treatment method and device based on polluted water data, and belongs to the technical field of sewage treatment.The riverway treatment method based on the polluted water data comprises the steps that pollution logs are generated by obtaining multi-source data, a pollution capacity account book is inquired, and a micro-stagnant storage area is constructed; according to the method, passive disaster bearing is converted into active pollution discharge, precious time and space are won for pollution control, cooperation of scheduling behaviors and natural laws is achieved by optimizing a power emission window, the economy of actions is ensured, the whole river regulation system is converted into a feedforward and self-adaptive closed-loop system from a scattered and lagged system, and the control efficiency of the river is improved. And the efficiency and economy of urban river network water environment management are improved.

The utility model belongs to the technical field of water purification, and particularly relates to an ecological floating island and a sewage purification system.The ecological floating island comprises a floating bed, an aquatic planting unit and physical purification equipment, the floating bed is arranged in polluted water, and the aquatic planting unit and the physical purification equipment are installed on the floating bed. Polluted water bodies have great influence on the environment, and there are many treatment methods for the polluted water bodies. In the application, the purification of the polluted water body by the aquatic planting unit is a biological method, the purification of the polluted water body by the physical purification equipment is a physical method, and the floating bed floating on the water surface of the polluted water body is put into the polluted water body as a carrier of the aquatic planting unit and the physical purification equipment; therefore, the polluted water body is purified by combining a plurality of polluted water body treatment methods, and the water quality purification effect is further improved.

The utility model belongs to the technical field of water surface garbage treatment, and particularly relates to a water surface garbage pollution treatment device which comprises a main body, the guide table is located on the inner ring of the main body and used for guiding the garbage to the central area, an inner frame is arranged on the inner side of the guide table, an arc-shaped filter plate for separating the garbage from water is arranged at the bottom of the guide table, and a shifting plate is arranged in the inner frame and used for pushing the garbage to the right side; and the collector is located in the area, close to the inner ring, of the main body and used for storing the garbage pushed out by the shifting plate, a draining plate is arranged at the position, close to the bottom, in the collector and used for preventing the garbage from floating on the water surface and continuously polluting water, and the effect of increasing the garbage collection capacity can be achieved. The garbage collection device can prevent garbage from floating on the water surface to ensure the subsequent collection effect, can prevent the garbage from continuously polluting the water body to achieve the treatment effect, can improve the garbage collection capacity, and is suitable for the long-time treatment environment with a large amount of garbage.

The invention relates to the technical field of humidification, in particular to a drawer type water tank, an upper water adding humidifier provided with the drawer type water tank and a zero-stale-water control method for controlling the humidifier. Compared with the prior art, the drawer type water tank can be inserted into the humidifier or pulled out of the humidifier, and due to the structure that the top face is open, water body replacement and water tank cleaning are very convenient and fast; the air inlet and the air outlet are provided with net structures, so that air and water are permeable, and foreign matters and mosquitoes can be prevented from entering the humidifier to pollute water; the humidifier does not need to be shut down in the upper water adding operation, and upper water adding can be conducted through the air outlet in the humidifying process; the fan guides the air flow to carry, dilute and output water vapor generated by the humidifying device, so that the problems of floor wetting and condensate water noise caused by air flow humidity supersaturation are solved; the zero stale water control method ensures that fresh water is used in the humidification operation. The air humidifier is suitable for three mainstream air humidification technologies of a cold evaporation type, a heat evaporation type and an ultrasonic wave type at the same time, reuse of the structural design of the humidifier can be achieved, intergenerational innovation and standardization of the humidifier industry are promoted, and sale, popularization and application of the humidifier are promoted.

This utility model relates to the field of polluted water filtration and adsorption treatment technology, specifically disclosing a multi-stage filtration and adsorption treatment device for low-pollution water. The device includes a filter housing with a filtration chamber inside. An output pipe is fixedly installed on one side of the bottom of the filtration chamber, with one end of the output pipe penetrating the filter housing and extending to the outside. A monitoring device housing is fixedly installed on the outside of the output pipe. A first rotating rod is rotatably mounted on the bottom of the output pipe via a bearing, and an impeller is fixedly installed on the outside of the first rotating rod. This utility model has a reasonable structure, high purification efficiency, and stable operation. By setting up a linkage device between the impeller and the rotating rod, it is possible to visually determine whether the filter membrane is clogged, facilitating timely replacement and improving maintenance efficiency. The device is easy to operate, suitable for various water treatment scenarios, and has good practicality and promotional value.

The invention discloses an oxidation pretreatment system for an anoxic vanadium polluted environment and a remediation method, and belongs to the technical field of environmental chemistry and pollution control. The system comprises an adding unit, a pH regulation and control unit and a monitoring unit, the adding unit is used for adding amorphous ferrihydrite into the polluted water body as an oxidizing agent, and the pH regulation and control unit is used for regulating the pH value of the water body and maintaining the pH value between 5.0 and 7.0. The remediation method comprises the following steps: firstly, carrying out oxidation pretreatment on low-valence vanadium by using amorphous ferrihydrite under an anoxic condition, and then adding an adsorption material to adsorb and fix generated pentavalent vanadium. The problem that low-valence vanadium is difficult to directly remove by a traditional adsorbent in an anoxic environment is solved, efficient and stable repair of vanadium pollution is achieved through the synergistic effect of directional oxidation and obligate adsorption, and the method has the advantages of being environmentally friendly and low in cost.

A flow self-adaptive rapid purification device based on medium layer filtration comprises a dosing system, a mixing system and a medium layer filtration system, the dosing system is connected with the mixing system, the mixing system is connected with the medium layer filtration system, the dosing system comprises a dosing barrel, a dosing stirrer and a variable-frequency dosing pump, and the variable-frequency dosing pump is connected with the mixing system. The mixing system comprises a mixing tank, a variable-frequency mixing motor and a bracket, and the medium filtering system comprises a filtering column body, a tangential water inlet, a flow self-adaptive structure, a stirring device, an annular filtering layer, an effluent weir, a water outlet, a sludge discharge port and a main emptying port. The device realizes rapid purification of overflow sewage and polluted water by monitoring suspended substances in inlet and outlet water in real time, dynamically adjusting process control parameters such as dosage and the like and changing a water distribution mode by self-adaption to flow, and has the characteristics of high purification speed, low drug consumption, small amount of residual drug in outlet water, high suspended matter removal efficiency, simplicity in operation and maintenance and the like.

The utility model provides an anti-pollution water drinking device, which comprises a water drinking trough, a water outlet pipe, a water inlet pipe and a water outlet pipe, the two protection plates are arranged at the open end of the inner cavity in a sliding mode; the driving assembly is connected with the two protection plates and used for opening or closing the inner cavity; and the return assembly is connected with the driving assembly, so that the inner cavity is kept in an open state under the action of external force, or the inner cavity is kept in a closed state when the external force disappears. The livestock drinking water device solves the technical problem that a livestock drinking water device in the prior art is prone to being polluted by the outside.

The utility model relates to the technical field of water pollution treatment, and discloses modularized wetland equipment for agricultural surface pollution treatment. Comprising a wetland accommodating tank, drainage mechanisms arranged at the lower parts of the two sides of the wetland accommodating tank and used for draining water, water inlet pipes fixedly connected to the middle parts of the two sides of the wetland accommodating tank in a penetrating manner, detection mechanisms arranged on the inner walls of the water inlet pipes, filtering mechanisms arranged on liquid inlet ports of the water inlet pipes, and water injection mechanisms arranged on liquid inlet ports of the filtering mechanisms, the supporting mechanism is arranged on the bottom surface of the inner wall of the wetland accommodating tank; the inner box is fixedly connected to the upper end of the supporting mechanism; the limiting frame is fixedly connected to the upper part of the side wall of the inner box; the first tank body penetrates through the middle parts of the two sides of the inner box; the device has the advantages that agricultural surface polluted water can be quickly added to the modularized shell, the pH value of the agricultural surface polluted water can be quickly detected, and the ecological floating bed in the shell can be conveniently and quickly mounted and dismounted.

The invention relates to the technical field of river pollutant improvement, in particular to a river water quality improvement method based on two-network model fusion. The method comprises the following steps: acquiring target river channel information, and constructing a river channel physical network model and an information network model based on the information; the dynamic diffusion condition of the river pollutants is estimated through a physical network model, and the water quality decline evolution trend and the ecological toughness attenuation condition are combined; analyzing a water quality change process, and identifying driving factors of water quality decline; transmitting the driving factor data to the physical network model, and performing river pollution tracing to obtain pollution source data; on the basis of pollution source data, riverway water level regulation and polluted water body remediation treatment are implemented; the water quality of the river channel is improved, so that the water quality of the river channel is more stable.

This invention provides a protective mobile unmanned surface vessel (USV) hyperspectral system for shallow sea pollution observation, belonging to the field of marine environmental monitoring technology. It includes an USV hull, hyperspectral observation equipment, a water sampling and detection device, and a controller. By installing a cabin and a hinged door on the USV hull, and housing the height-adjustable hyperspectral observation equipment, the system effectively protects the equipment when observation is needed. The door opens to extend the equipment from the cabin, and retracts it when observation is not required, then closes the door. The water sampling and detection device allows for timely and rapid sampling of polluted water, analysis of the samples, and output of results. This invention integrates hyperspectral observation and water sampling and detection, effectively protecting the hyperspectral observation equipment while simultaneously enabling sampling of polluted water, thus improving the effectiveness of pollution evidence collection.

The application relates to a solar energy-based static water river and lake pollution water body in-situ purification device and relates to the technical field of water treatment, which comprises a first filter tank, a second filter tank and a collection tank for guiding impurities, the first filter tank and the second filter tank are provided with biological guide channels for realizing biological guidance, and the first filter tank and the second filter tank are provided with impurity guide channels for realizing impurity guidance. The biological guide channels are arranged to guide the organisms that enter the vicinity of the purification equipment, the application also guides the impurities, collects the impurities, and therefore can solve the problems that the organisms enter the purification equipment, contact more impurities and cause the death of the organisms due to the accumulation of the impurities.

This invention discloses a silent pollution-free water jet generator and a method for studying the noise performance of water jets. The silent pollution-free water jet generator includes, in sequence, a first elbow, a first transition pipe, a solenoid valve / flowmeter assembly, a second transition pipe, a second elbow, and a nozzle section, all sealed together. One end of the first elbow is sealed to an outlet on one side of the housing. The method for studying the noise performance of the water jet comprises the following steps: Step 1: Determine the vertical distance between the bottom surface of the housing and the center of the nozzle section; Step 2: Assemble the silent pollution-free water jet generator and hoist the housing onto a platform frame, adjusting the frame height to meet the testing requirements; Step 3: Fill the housing with water; Step 4: Obtain the water jet velocity, and begin measuring the noise after reaching the required velocity. This invention uses water gravity to generate a water jet to study its noise performance, significantly reducing interference caused by the noise of the device itself.

The present invention discloses a seawater heavy metal pollutant sampler, and relates to the field of seawater collection, the seawater heavy metal pollutant sampler comprises: an inner shell, the inner shell is internally provided with a sampling cylinder, and the sampling cylinder is provided with a sample introduction switch; the outer shell is arranged outside the inner shell in a sleeving manner; the traction part is connected with the inner shell and is used for pulling the outer shell and the inner shell to sink into a sampling area; the outer shell is used as a sacrificial layer, the inner shell and the sample inlet are completely wrapped in the sinking stage, it is ensured that surface pollutants are only attached to the outer wall of the outer shell, and the interior of the inner shell is kept clean. After reaching a target depth, the cylindrical air bag expands to realize rapid mechanical separation of the outer shell and the inner shell, the outer shell carries attached surface pollutants to rapidly float up and leave a sampling area, and a contact path between a pollution source and a sample is cut off in a physical space. In cooperation with the specific geometric design of the water guide piece, upward induction water flow is generated when the outer shell floats upwards, residual polluted water on the periphery of the inner shell is pushed away from the sampling area, and the sampling environment is further purified.

The utility model discloses a portable maintenance joint for a composite material pipeline, and relates to the technical field of pipeline maintenance. The pipeline butt joint device comprises two semicircular sealing pipes, a lining pipe and a positioning ring, the two ends of the lining pipe abut against two pipelines needing to be in butt joint, and sealing sleeves are fixed to the two ends of the lining pipe. According to the utility model, the lining pipe, the semicircular sealing pipe, the second nut and the positioning ring are matched with each other to play a role in connecting two pipelines which need to be butted, so that the whole pipeline does not need to be replaced, and convenience is provided for workers to maintain the pipelines; in order to prevent the situation that the end of the lining pipe is exposed out of the metal texture inside the lining pipe and pollutes a water source, the two sealing sleeves are used for wrapping the end of the lining pipe to prevent the exposed end from making contact with infusion liquid, and then the sealing sleeves and the annular sealing rings have the sealing effect on the contact face of the lining pipe and the pipeline.

The invention discloses a pet water drinking device capable of isolating pollution, and belongs to the technical field of pet supplies. According to the technical scheme, the pet water drinking device capable of isolating pollution comprises a fixing base, a water drinking trough, a water storage bottle with a sealing cover and a water diversion channel; the water storage bottle is inversely mounted on the fixed seat, and the bottom of the fixed seat is communicated with the drinking trough through a water diversion channel; the sealing cover is provided with a water outlet used for discharging water outwards and a pressure control pipe penetrating through the sealing cover. The pressure control pipe is communicated with the inside and the outside of the water storage bottle and is used for balancing air pressure inside and outside the water storage bottle to control on-off of the water outlet; air pressure inside and outside the water storage bottle is balanced through the pressure control pipe, on-off of the water outlet is controlled, the flaring structure is combined for bubble treatment and overflow pollution discharge design, the path for polluted water to flow back to the water storage bottle is blocked, clean water in the water storage bottle is prevented from being polluted, meanwhile, the polluted water overflows and is discharged out of the drinking trough, and the pet drinking safety is guaranteed.

The application provides a two-stage full-process autotrophic microbial denitrification device for treating contaminated water bodies, which is submerged in ammonia-nitrogen contaminated water bodies to complete denitrification treatment, and comprises a floating body, a mesh cover box body fixedly installed at the bottom side of the floating body, a first storage tank and a second storage tank fixedly installed at the top side of the mesh cover box body, a first inspection opening and a discharge plate respectively formed in the second storage tank and the first storage tank, two hinges fixedly installed on the inner wall of the mesh cover box body, and a same perforated partition movably installed between the two hinges, wherein the two sides of the perforated partition are filled with short-cut nitrification immobilized biological gel particles and anaerobic ammonia oxidation immobilized biological gel particles. The application realizes the coupling treatment mode of short-cut nitrification and anaerobic ammonia oxidation, and can automatically adjust the contribution proportion of short-cut nitrification and anaerobic ammonia oxidation according to the ammonia-nitrogen and nitrite-nitrogen concentration and proportion in the water body, has the advantages of remote operation, no need of additional carbon source, saving of oxygen supply energy consumption, high denitrification efficiency, no need of sludge discharge, strong adaptability and the like, and achieves the effect of pollution reduction and carbon reduction.

The application provides a permeable reaction wall for composite mine pollution and a wastewater treatment system, wherein the permeable reaction wall comprises a framework shell, a filter layer and alkaline fillers; the alkaline fillers are located in the framework shell, and the filter layer is located between the alkaline fillers and the framework shell; the framework shell comprises a two-way geogrid, and the filter layer comprises a geotextile screen; the framework shell comprises a main body part and end parts located at two ends of the main body part, and openings are arranged on the end parts. The permeable reaction wall containing the alkaline fillers can neutralize the acidic water generated by the pollution in the mine, reduce the pollution degree of the water in the mine, reduce the cost, and has a good pollution water treatment effect.

The utility model provides a nuclear grade electric backwashing filter which comprises a filter bin, a sewage discharge bin, a sewage smoothing water inlet, a filter element, a water inlet pipe, a supporting seat and a functional pipeline washing system, the sewage discharge bin is fixedly arranged at the bottom of the filter bin, the sewage smoothing water inlet is fixedly arranged at the top of the filter bin, the filter element is fixedly arranged in the sewage discharge bin, and the functional pipeline washing system is arranged on the supporting seat. The filter chamber is arranged in the filter chamber; the water inlet pipe is fixedly mounted on the outer side of the lower part of the filter bin, the supporting seat is fixedly mounted on the outer side of the upper part of the filter bin, and the functional pipeline washing system is fixedly mounted in the supporting seat and connected to the top end of the filter element; due to the arrangement of the sewage discharge bin and the functional pipeline washing system, impurities can be comprehensively discharged outwards through back washing, and the washed impurities can be conveniently discharged outwards.

The application relates to the technical field of wastewater treatment materials, in particular to modified coal quality activated carbon for sewage treatment and a preparation method and application thereof. The adsorption material is prepared by mixing and sintering after impregnation of a composite nitrate solution with coal powder and CNC as a matrix, realizes oxidation hole expansion and metal / amino dual functionalization. The adsorption material of the application has excellent adsorption efficiency (>=90%) and long-term stability in composite pollution water quality containing organic matter and heavy metals, and can effectively meet the application in complex pollution water quality.

The invention discloses a method for treating heavy metal and organic pollutant combined pollution wastewater, relates to the field of organic pollutant-heavy metal combined pollution treatment, and particularly aims to solve the problems that in the prior art, organic-heavy metal complexes cannot be destroyed synchronously, organic pollutants cannot be degraded, heavy metal cannot be fixed synchronously, and secondary pollution is likely to be generated. The method is characterized by comprising the following steps: by taking iron-based charcoal (FeBC) prepared by modifying and pyrolyzing biomass through ferric salt as an activating agent, adding FeBC and peroxides (containing percarbonate, persulfate and the like) into the pretreated organic-heavy metal compound polluted water body to construct a synergistic reaction system; feBC activates peroxide to generate active oxygen species, complex breaking and degradation of composite pollutants are achieved, and meanwhile heavy metal is fixed by means of the adsorption performance of FeBC. According to the method, raw material sources and material preparation are wide and simple, the combined pollution treatment efficiency is high, in the pH range of 3-11, the organic pollution degradation rate is larger than or equal to 90%, the heavy metal removal rate is larger than or equal to 85%, and the total removal rate is larger than or equal to 80% after repeated use for three times; organic-heavy metal combined pollution of various scenes can be efficiently and synchronously treated, the method is suitable for multi-field combined pollution water treatment, secondary pollution risks are avoided, and the application potential is remarkable.

The application discloses a solar evaporator with an organic dye degradation function and a preparation method thereof, and relates to the technical field of water treatment. The solar evaporator comprises a stand, the top end of the stand is provided with a groove, the groove is provided with an annular baffle, the annular baffle divides the groove into a fresh water tank and a sewage tank, and the fresh water tank is located at the outer side of the annular baffle. The top end of the stand is provided with a transparent cover body, the bottom end of the transparent cover body is arranged at the outer edge of the fresh water tank, and the sewage tank is provided with a 3D porous evaporator with a photocatalysis and photo-thermal conversion function. The application can efficiently evaporate water under the condition of light, and has a remarkable photocatalytic degradation effect on organic dyes such as methylene blue and rhodamine B. The application realizes water purification while efficiently evaporating water, is particularly suitable for the treatment of organic contaminated water, and provides an efficient application technology for the technical field of environmental protection, low cost and multi-functional water treatment.

The invention discloses a biochar-loaded self-doped pyridine nitrogen confinement nZVI material and a preparation method thereof, and relates to the technical field of sewage treatment materials. The nitrogen-doped iron-carbon micro-electrolysis filler is formed through two-step pyrolysis by respectively forming pores and improving the mechanical strength through polyethylene glycol and sodium alginate by utilizing the characteristic that chitosan is doped with nitrogen, and a reaction path is optimized by utilizing the synergistic effect of multi-nitrogen species of pyridine nitrogen and graphite nitrogen, so that the NO3 <->-N removal rate of nitrate wastewater and the N2 selectivity of a product are improved, and the nitrogen-doped iron-carbon micro-electrolysis filler is obtained. And a microscopic primary battery is formed based on contact of zero-valent iron and biochar, so that the pH restriction during independent use of nZVI is relieved, and the removal rate of nitrate is increased. The biochar-loaded self-doped pyridine nitrogen confinement nZVI material prepared by the invention has the comprehensive advantages of good dispersibility, rich active sites, optimized reaction path, dual-function synergy, strong anti-interference performance and recoverability, and is suitable for efficient repair of nitrate wastewater and composite polluted water.