142 results about "Multi pollutant" patented technology

The invention relates to the technical field of water body pollution monitoring, in particular to a multispectral image fused water body pollutant accurate recognition system, which comprises a data acquisition module, a cloud processing module, a boundary processing module, a pollution recognition module, a diffusion prediction module and a visualization module, the system constructs sub-pixel representation of a water pollutant boundary by using a differential geometry manifold theory, and realizes high-precision pollutant boundary description through a multi-scale analysis and curvature flow optimization technology; enhancing pollutant characteristic expression by adopting multispectral image fusion and an optimal wave band selection technology; using a support vector machine model to accurately identify various pollutant types such as oil films, oil spots, algae blooms and the like; based on a boundary fine description result and a pollutant type identification result, the diffusion trend of pollutants is accurately predicted in combination with historical flow, wind direction and wind speed data, and the system improves the water pollutant boundary identification precision and enhances the identification capability of complex boundary forms and low-contrast regions.

The invention provides a method for estimating atmospheric heavy metal environmental capacity. The method comprises the following steps: acquiring basic topographic and meteorological data of a to-be-estimated target area; determining an atmospheric heavy metal emission scheme; obtaining the day-by-day grid-by-grid heavy metal concentration of the target area in the simulation year by adopting an air quality model; and calculating to obtain a non-carcinogenic risk quotient value and a carcinogenic risk quotient value, comparing with 1 to judge whether an atmospheric heavy metal emission scheme needs to be adjusted, and obtaining the atmospheric heavy metal environmental capacity of the emission source arrangement position until the non-carcinogenic risk quotient value or the carcinogenic risk quotient value is less than 1. According to the method, pollutant types are expanded from fine particulate matters and precursors thereof to atmospheric heavy metals, constraint based on pollutant concentration is promoted to constraint of crowd health, and a reasonable environmental capacity result is obtained by utilizing iterative calculation. According to the invention, the goal of atmospheric environmental pollution prevention and control work is improved from improvement of air quality to reduction of crowd health risks, and technical support is provided for cooperative emission reduction work of various pollutants.

The invention provides a preparation method and device of a composite matrix for sewage treatment and a server, and relates to the technical field of water treatment material.The preparation method comprises the steps that center combination treatment is conducted on a ternary composite matrix for sewage treatment, and a test formula set is generated; obtaining test data corresponding to the test formula set, and taking the removal rate corresponding to each matrix as a response value to obtain target test data; substituting the target test data into a quadratic polynomial regression model of the ternary composite matrix to carry out regression analysis processing to obtain a model predicted value, and carrying out model verification updating processing on the quadratic polynomial regression model by utilizing the model predicted value and the target test data to determine a target quadratic polynomial regression model; and through the target quadratic polynomial regression model, optimizing the ratio of the ternary composite matrix, and determining the target mass ratio of the ternary composite matrix. According to the invention, the pollutant removal rate of synergistic decontamination of various pollutants in the sewage treatment process can be obviously improved.

The invention relates to a spectral analysis-based breeding air quality detection system, which comprises: a sensor module for detecting the concentration of ammonia gas, carbon dioxide and dust in a breeding environment in real time, the sensor module comprising: an ammonia gas sensor for quantitatively detecting the absorption characteristic of ammonia gas to light with a specific wavelength; the carbon dioxide sensor is used for measuring the concentration by adopting non-dispersive infrared light and utilizing the characteristic that carbon dioxide absorbs infrared light; the dust sensor is used for calculating the dust concentration by measuring the light scattering condition of particulate matters in the air; the data processing module is used for receiving detection data from the sensor module; according to the breeding air quality detection system based on spectral analysis and the detection method thereof, various pollutants can be accurately monitored on the basis of a modern spectral analysis technology, and real-time monitoring and dynamic adjustment of a breeding environment are realized through an intelligent data processing and automatic control mechanism, so that the health of bred animals is guaranteed, and the breeding production efficiency is improved.

The invention discloses a control method and device of a fresh air conditioner and the air conditioner. The method comprises the steps that according to the obtained concentration of multiple indoor pollutants and the obtained concentration of multiple outdoor pollutants, an indoor air quality value and an outdoor air quality value are obtained through calculation; the indoor air quality value is compared with a first preset value and a second preset value to obtain a first comparison result, and the outdoor air quality value is compared with the first preset value and the second preset value to obtain a second comparison result; judging whether the first comparison result and the second comparison result meet preset conditions or not; if the first preset condition is met, the air inlet fan and the exhaust fan are closed; if the second preset condition is met, the air inlet fan and the exhaust fan are adjusted to the low air gear; and if the third preset condition is met, the air inlet fan and the exhaust fan are adjusted to the middle air gear. By monitoring various pollutants, the indoor and outdoor air quality can be comprehensively mastered, so that timely and accurate operation response can be realized.

The invention discloses a bridge deck runoff treatment and hazardous chemical substance collection combined method for a highway. The method comprises the following steps: step 1, bridge deck runoff collection; 2, hazardous chemical substance collection; according to the invention, an existing monitoring camera on a road is completely adopted for information acquisition, only data reading, analysis and communication equipment is additionally arranged in a monitoring center, one-time investment is greatly saved, and adopted technical supporting hardware is common equipment of a road system, so that the operation and maintenance difficulty is small, the service life is long, and the operation and maintenance cost is low; according to the method, only a bridge deck runoff collecting pipeline is slightly adjusted, the problem that the treatment cost of the dangerous chemical accident liquid of a user is greatly increased due to the fact that the dangerous chemical accident liquid pollutes a large amount of rainwater in the rainy weather can be solved, and the operation and maintenance cost and the operation and maintenance difficulty are extremely low; the purification efficiency is high; meanwhile, the bridge deck initial runoff treatment technology is high in weather resistance and resistant to hydraulic impact.

The utility model provides a subway platform rainwater ecological recycling device which comprises a water inlet tank, a filter tank is arranged on one side of the water inlet tank, and a water storage tank is arranged on one side of the filter tank. According to the ecological rainwater recycling device for the subway platform, the grating, the filter plate, the filter tank, the water storage tank and other structures are arranged, the grating serves as a first defense line to intercept large-size impurities and prevent the large-size impurities from entering the device to cause blockage, the filter plate further filters small-particle impurities, and a multi-stage filter layer in the filter tank deeply purifies rainwater and removes various pollutants; in addition, a sliding groove, a floating plate, an ejector pin, a button and an alarm in the water storage tank form a water level monitoring and alarming system, the water level can be monitored in real time, early warning can be conducted in time when the water level is abnormal, water tank overflowing and other accidents can be avoided, rainwater resources are effectively utilized, urban tap water is saved, and the environment is protected. And the water consumption cost of subway operation is also reduced.

The invention particularly relates to a method for determining a reaction rate constant of tetravalent iron and organic pollutants by using a chemiluminescence method, and belongs to the technical field of water quality detection. According to the method, on the basis of a chemiluminescence reaction between Fe (IV) and naproxen (NAP), a target organic pollutant (TrOC) is introduced, the quenching effect of the target organic pollutant on a chemiluminescence signal is measured, and a competitive kinetic model between the chemiluminescence quenching capacity (CLQC) and a secondary reaction rate constant (kFe (IV), TrOC) of Fe (IV) on the target pollutant is constructed. According to the method, the concentration of Fe (IV) does not need to be monitored in real time, and the reaction activity between Fe (IV) and various pollutants can be directly and rapidly measured only by comparing the intensity change of the chemiluminescence signals when the target pollutants exist and do not exist.

The invention relates to the technical field of air pollution treatment, and particularly discloses a method for jointly removing multiple pollutants in sintering flue gas through electric precipitation, ozone oxidation and an alkaline washing tower, and the method comprises the following steps: S1, the sintering flue gas sequentially passes through a high-temperature electric precipitator provided with a catalytic polar plate, and ozone is injected in front of an inlet of the electric precipitator for pre-oxidation; s2, enabling the flue gas treated in the step S1 to enter an ozone oxidation tower, and supplementing and injecting ozone through a graded ozone distribution system; s3, introducing the flue gas treated in the step S2 into an alkaline washing tower, and contacting the flue gas with circulating alkali liquor; and S4, monitoring the pollutant concentration in the final discharged tail gas in real time, and dynamically feeding back and adjusting the injection amount of ozone in the S1 and S2 and the pH value of the alkali liquor in the S3 based on a monitoring result. The method disclosed by the invention can be used for synergistically and deeply purifying multiple pollutants in low-temperature industrial flue gas such as steel sintering, pellet roasting and waste incineration, and has the advantages of high removal efficiency and environment friendliness.

The invention discloses air treatment equipment. The air treatment equipment comprises a shell; a fan; the ion generator comprises: a housing; a first discharge electrode; a second discharge electrode; an electrode power supply unit that supplies a first voltage and a second voltage to the first discharge electrode and the second discharge electrode; a spacing adjusting device; the environmental parameter detection assembly is used for detecting numerical values of various pollutants; a plurality of purification modes which have priority levels and are used for purifying different pollutants and intervals corresponding to the plurality of purification modes are pre-stored in the control unit; and acquiring a pollutant value, determining a purification mode needing to be operated based on the acquired pollutant value and the purification mode priority level, and changing the distance between the first discharge electrode and the second discharge electrode based on the determined purification mode. According to the air treatment equipment provided by the invention, different types of ions are generated by adjusting the distance between the electrodes so as to purify different pollutants.

The invention belongs to the technical field of flue gas treatment, and particularly relates to a hazardous waste incineration flue gas filtering and purifying system and a control method. The spray tower is provided with a tower body provided with a gas inlet and a gas outlet and is used for carrying out wet purification treatment on flue gas, a spray mechanism and a defoaming mechanism are mounted in the spray tower, and a circulating mechanism is mounted on the side surface of the spray tower; the activated carbon box is connected to the gas outlet and is used for carrying out dry purification treatment on the flue gas; the heat exchanger is connected to the gas inlet and is used for cooling the flue gas entering the spray tower and recycling waste heat; according to the system, flue gas is cooled through the heat exchanger, so that the influence of high temperature on wet-process and dry-process purification effects can be avoided, and waste heat can be effectively recovered; according to the flue gas purification device, the flue gas is subjected to wet purification and dry purification in sequence, various pollutants in the flue gas can be effectively removed, purification comprehensiveness is improved, and the defoaming mechanism can prevent excessive spray water from being carried by the flue gas to affect subsequent dry purification.

The invention relates to the technical field of flue gas treatment, in particular to a method for treating flue gas of a waste incineration plant. The problem of low flue gas treatment efficiency in the prior art is solved. The method comprises the following steps: firstly, simultaneously spraying a nitrogen oxide reducing agent and a micronized calcium-based deacidification agent into a high-temperature section of flue gas, and carrying out non-catalytic denitration and pre-deacidification treatment; then, the flue gas enters a medium-temperature composite catalytic reactor, and efficient denitration, elemental mercury oxidation and catalytic decomposition of dioxin are achieved through cooperation of a composite catalyst; then, the flue gas enters a graded circulating fluidized bed system, acid gas is efficiently removed through a first-stage circulating fluidized bed, then the flue gas enters a second-stage circulating fluidized bed after being cooled, and mercury and heavy metal are efficiently adsorbed through modified active coke; finally, the flue gas passes through a composite filter bag, and residual CO and VOCs are catalytically degraded while dust is removed. According to the invention, deep purification of various pollutants in the flue gas is realized through quality-divided cooperation and temperature-divided and zoned treatment, the treatment efficiency is high, and the operation is stable.

The application provides a configuration method and device of a composite substrate for sewage treatment and a server, relates to the technical field of water treatment material preparation, and comprises the following steps: performing central combination treatment on a ternary composite substrate for sewage treatment to generate a test formula set; obtaining test data corresponding to the test formula set, taking the removal rates of various substrates as response values, and obtaining target test data; performing regression analysis processing on the target test data in a quadratic polynomial regression model of the ternary composite substrate to obtain model prediction values, and performing model verification and update processing on the quadratic polynomial regression model by using the model prediction values and the target test data to determine a target quadratic polynomial regression model; and performing optimization processing on the proportioning of the ternary composite substrate by using the target quadratic polynomial regression model to determine a target mass proportioning of the ternary composite substrate. The application can significantly improve the pollutant removal rate of the collaborative pollutant removal of various pollutants in the sewage treatment process.

The invention relates to the technical field of purification devices, and discloses a waste gas filtering and purifying device for waste incineration, which comprises a waste incineration mechanism and a protective shell, one side of the waste incineration mechanism is fixedly connected with a waste gas filtering mechanism, and the interior of the protective shell is fixedly connected with a circulating air pump. The output end of the circulating air pump is fixedly connected with an air blowing pipe, and the input end of the circulating air pump is fixedly connected with an air suction pipe. According to the waste incineration device, through cooperation of the waste incineration mechanism, the waste gas filtering mechanism, the main drive linkage mechanism and the speed-increasing air draft mechanism, the problems that a traditional device is low in filtering efficiency, multiple pollutants are difficult to effectively remove, the waste gas circulation speed is unstable, and the sealing performance of the device is poor are solved; through cooperation of the protective shell, the circulating air pump, the air blowing pipe, the air suction pipe and the linkage scraping mechanism, the problems that a traditional device lacks a cooperative linkage purification mechanism, washing, filtering and anti-blocking integrated operation cannot be achieved, and the anti-blocking effect is limited are solved.

The utility model discloses a novel purification treatment tool for industrial V0CS waste gas, and relates to the technical field of waste gas purification, one side of a spray tower is fixedly connected with a flue, a support frame is arranged above the flue, a hole is formed in the support frame, an adsorption box is arranged in the hole, an exhaust pipeline is arranged above the adsorption box and is fixedly connected with the adsorption box, and the exhaust pipeline is fixedly connected with the adsorption box. An exhaust device is installed at the tail end of the exhaust pipeline in a matched mode and comprises a centrifugal fan, and a servo motor is arranged on one side of the centrifugal fan. The discharge tower is arranged on the other side of the centrifugal fan and is connected with the discharge tower through a pipeline; the spraying tower, the adsorption box and the like are combined for treatment, various pollutants in the industrial VOCS waste gas can be effectively removed, and meanwhile, the heating device is used for desorption after a zeolite adsorbent is saturated, so that treatment interruption caused by frequent replacement of the adsorbent due to the saturation of the adsorbent is avoided, and the service life of the VOCS waste gas is prolonged. And the economic loss caused by replacement of the adsorbent due to shutdown of equipment is reduced.

According to the integrated flue gas treatment device based on the hollow fiber membrane, in the first stage, flue gas dust is treated to the microgram level through the hollow fiber membrane, in the second stage, adsorption and catalytic reduction or catalytic oxidation are conducted through a boiling bed, and in the third stage, further treatment is conducted through a replaceable powdery catalyst, an adsorbent fixed bed and a fixed catalyst bed embedded with membrane wires. The advantages of large specific surface area of the powdery material and accurate blocking of the hollow fiber membrane on the powdery material are fully exerted, and integrated treatment of various pollutants is realized.

The application provides a stainless steel pickling wastewater recycling treatment system and method, and belongs to the technical field of wastewater treatment.The method comprises the following steps: step one, preliminary removal of heavy metals and fluorine ions by a heavy metal capturing tank and a calcium carbonate industrial solid waste tank;step two, deep removal of heavy metals and fluorine ions by a crystallization fluidized bed;and step three, synchronous removal of sulfates and nitrates by a microbial method.The application organically combines physical and chemical treatment with biological treatment, can synchronously and efficiently remove various pollutants such as nickel, chromium, iron, thallium, fluorine, sulfates and nitrates in the stainless steel pickling wastewater, has good treatment effect, the effluent water quality can meet the recycling requirements, realizes the resource utilization of wastewater, reduces the waste of water resources, realizes the synchronous and efficient removal of various pollutants, reduces the treatment cost by the resource utilization of calcium carbonate industrial waste and CO2 gas, reduces the sludge yield, the effluent water can meet the recycling requirements, and has economic benefits and environmental benefits.

This invention proposes a three-dimensional electrode electrochemical device with descaling function. It is divided into a softening chamber and an oxidation chamber by a partition. The softening chamber contains multiple cylindrical electrode groups. Under the action of an external electric field, the cathode reaction generates a strongly alkaline environment to precipitate scale-forming ions in the water. A gas flushing mechanism and an external programmable DC regulated power supply effectively achieve automatic descaling. The three-dimensional electrode group in the oxidation chamber consists of several anode plates and cathode plates arranged alternately at equal intervals. Insulating baskets filled with particle packing are placed between adjacent electrode plates. Ultrasonic vibrating plates are integrated around the three-dimensional electrode group. A porous sieve plate and aeration pipeline are installed at the bottom of the three-dimensional electrode group. A spray mechanism with rotating nozzles is installed at the top of the oxidation chamber. The combination of the three-dimensional electrode group, ultrasonic assistance, and circulating spray enhances the oxidation efficiency. This invention removes multiple pollutants from water simultaneously and efficiently in a single reactor without the need for external reagents, through a series of electrochemical reactions. It has the advantages of high treatment efficiency, high automation, and small footprint.

The invention discloses a zero-energy-consumption white smoke removal method and device for a primary flue gas diffusion chimney of a converter. The white smoke removal device comprises a converter primary flue gas diffusion chimney, a flue gas inlet pipeline, a water baffle, a segmented drainage system, a folded plate demister, a throat spiral fin cooler, a swirler, a water collector, an upper spiral fin cooler, an ignition device and a chimney sealing plate. Flue gas is sequentially subjected to pre-dehydration, primary white smoke removal, intensified cooling, sufficient cooling and secondary white smoke removal and then is discharged into the atmosphere, water vapor in the flue gas is sufficiently condensed and removed in a segmented mode, white smoke plume and various pollutants at an outlet of a diffusion chimney can be effectively reduced, meanwhile, consumption of external energy is not increased in the whole process, and the device is low in initial investment and low in cost. The method has good economical efficiency and is widely suitable for newly-built and reformed projects.

The invention discloses a circulating spouted bed sintering flue gas multi-pollutant integrated removal system, and belongs to the technical field of industrial flue gas treatment. In the system, a tubular heat exchanger is connected with a bottom air inlet of a hearth through an air pipe; a hopper and a natural gas burner are arranged at the side part of the hearth, and a solid bed material with the particle size of 70-150 microns is filled in the hearth; an upper end outlet of the hearth is connected with an inlet of the cyclone separator, a plurality of ammonia spraying nozzles are distributed at the inlet of the cyclone separator, and a lower outlet of the cyclone separator is connected with the bottom of the hearth through a material returning pipe; an upper end outlet of the cyclone separator is connected with the tubular heat exchanger through a flue gas pipe; the tubular heat exchanger is connected with the bag-type dust collector; and the induced draft fan is connected with an outlet of the bag-type dust collector. According to the invention, various pollutants such as dioxin, carbon monoxide, sulfur oxide, nitrogen oxide and solid particle dust in the sintering flue gas can be integrally removed, the removal efficiency is high, the carbon emission and pollution are obviously reduced, and the whole system is compact and simple in structure.

The invention relates to the technical field of waste gas purification, in particular to a preparation process of a chemical waste gas adsorbent. According to the invention, macromolecular substances capable of adsorbing industrial waste gas are chemically grafted on the surface of an inorganic porous material, and other functional treatment steps are combined, so that the chemical waste gas adsorbent with high adsorption capacity, high selectivity, good stability and renewability is prepared, and efficient adsorption and removal of various pollutants in the chemical waste gas are realized; the technical defects of an existing adsorbent are effectively overcome, the chemical waste gas treatment efficiency and quality are improved, and environmental pollution is reduced.

The invention provides a multi-dimensional intelligent air purification method and system and electronic equipment, and relates to the technical field of air conditioning.The method comprises the steps that indoor environment data are collected in real time through a multi-dimensional sensor array, the indoor environment data are input into a pollutant traceablility model, and the pollution source type and the pollution source position probability are obtained; a purification control strategy is generated based on the pollution source type and the pollution source position probability, air purification equipment is controlled to execute corresponding purification operation based on the purification control strategy, and the problems that in the prior art, the sensor types are limited, data fusion analysis is lacked, the coexistence state of various pollutants is difficult to comprehensively recognize, the control strategy is solidified, and the control cost is low are solved. The technical problems that the existing system is difficult to realize differential purification aiming at specific pollutants and the improvement of the overall purification efficiency is restricted due to the phenomena that the existing system cannot adapt to the dynamic change of a pollution source and the system and the pollution distribution condition are disjointed are solved, and the effect of improving the purification efficiency of the specific pollutants is achieved.

The present disclosure relates to a purification system for purifying a gaseous product produced by electrolysis comprising: a separation vessel (10) configured to contain a separating liquid (12), and where the gaseous product is passed through the separating liquid (12) to at least partially remove a contaminant from the gaseous product in use. A condenser vessel (30) operatively connected downstream of the separation vessel (10), the condensing vessel (30) comprising a condenser (24) configured to condense one or more contaminant out from the gaseous product. The separation vessel (10) and the condensing vessel (30) are provided as separate, fluidly connected vessels.

The present disclosure relates to a purification system for purifying a gaseous product produced by electrolysis comprising: a separation vessel (10) configured to contain a separating liquid (12), and where the gaseous product is passed through the separating liquid (12) to at least partially remove a contaminant from the gaseous product in use. A condenser vessel (30) operatively connected downstream of the separation vessel (10), the condensing vessel (30) comprising a condenser (24) configured to condense one or more contaminant out from the gaseous product. The separation vessel (10) and the condensing vessel (30) are provided as separate, fluidly connected vessels.

The application relates to a device and method for producing mineralized drinking water by coupling nanofiltration and electrodialysis, and relates to the technical field of water treatment. The device solves the problem that nanofiltration membranes remove a variety of pollutants while removing a variety of natural mineral ions beneficial to human bodies, and the problem that the separation performance of nanofiltration membranes is insufficient in matching the separation target. The device comprises the following steps: introducing, into a nanofiltration unit, pretreated water containing ions and potential organic pollutants through the inlet of the nanofiltration unit; obtaining first dilute water and first concentrated water through nanofiltration separation; introducing the first dilute water and the first concentrated water into a first reverse electrodialysis unit respectively; performing ion redistribution in the first reverse electrodialysis unit; introducing second concentrated water after the redistribution into a second reverse electrodialysis unit; performing ion distribution with second water treated by a nanofiltration-gravity flow ultrafiltration system; obtaining second effluent flowing out of the second reverse electrodialysis unit; and returning third concentrated water obtained after the distribution to the nanofiltration unit. The application is applied to the field of drinking water production.

A method and an apparatus for removing one or more contaminants from water are described. The method comprising introducing water with a contaminant into an apparatus comprising a mixer positioned in the vessel, where the mixer can have one or more impellers fixedly attached to a shaft. In some embodiments, a plurality of impellers includes a first impeller which is spaced from an adjacent impeller by a distance D 1 . The position of each impeller in the plurality defines a region Rn of the internal volume, where n may correspond to a number of impellers in the plurality. The vessel comprises a gas inlet for introducing ozone into the water, where the gas inlet is positioned in region Rn.

The invention relates to a thermal power waste gas collaborative purification device which comprises a pretreatment assembly, a mild purification assembly and a deep purification assembly which are communicated in sequence. The pretreatment assembly comprises a cyclone separator; the light purification assembly comprises a purification tower and is used for preliminarily purifying harmful gas in the waste gas; the deep purification assembly comprises an electrostatic dust collector and a catalytic oxidation sub-assembly which are communicated with each other, waste gas in the cyclone separator enters a bottom inner cavity of the purification tower through a bottom gas inlet, and the purification tower enters the electrostatic dust collector through a top gas outlet; an alkaline adsorbent spraying layer, a heavy metal adsorbent spraying layer and an oxidizing agent spraying layer are sequentially arranged in the purification tower from top to bottom, and filler layers are arranged below the alkaline adsorbent spraying layer, the heavy metal adsorbent spraying layer and the oxidizing agent spraying layer. According to the purification device, collaborative purification of various pollutants such as SO / HCl, heavy metal and VOCs can be fully achieved, and the goals of high efficiency, economy and environmental protection are achieved.

This invention discloses a wastewater treatment agent for iron and steel smelting and its preparation method, relating to the field of water pollution control technology. The wastewater treatment agent for iron and steel smelting comprises the following raw materials in parts by weight: 18-23 parts diatomaceous earth, 20-25 parts bentonite, 15-18 parts flocculant, 5-8 parts coagulant aid, and 8-12 parts calcium oxide. The wastewater treatment agent for iron and steel smelting prepared by this invention can effectively reduce the chemical oxygen demand, suspended solids, ammonia nitrogen, and heavy metal content in wastewater, achieving efficient removal of multiple pollutants from iron and steel smelting wastewater, and has good treatment effect and application prospects.

A method of photocatalytic degradation of a polluted solution includes contacting a solution containing one or more pollutants with a graphite-phase carbon nitride, calcium metavanadate, and calcium silicate (CaV2O6 / CaSiO3 / g-C3N4) nanocomposite, followed by irradiating the nanocomposite with light to degrade one or more pollutants in the solution. The method further includes irradiating the CaV2O6 / CaSiO3 / g-C3N4 nanocomposite with a light having a wavelength of 200 to 800 nm to photocatalytically degrade the one or more pollutants in the solution.

The application belongs to the technical field of wastewater treatment, and particularly relates to a phosphogypsum leachate treatment unit and a treatment method. The phosphogypsum leachate treatment unit comprises a cylinder, a central shaft, an iron electrode plate and an aluminum electrode plate. The method for treating phosphogypsum leachate by using the phosphogypsum leachate treatment unit comprises the following steps: simultaneously performing ozone oxidation and electrolysis coupling reaction on the phosphogypsum leachate to be treated in the phosphogypsum leachate treatment unit, adjusting the pH value of the effluent from the treatment unit, and performing solid-liquid separation on the precipitate. The supernatant is the effluent. The method simultaneously removes phosphoric acid ions, fluoride ions and organic pollutants in the leachate by simultaneously performing ozone oxidation and electrolysis coupling reaction on the phosphogypsum leachate to be treated in the phosphogypsum leachate treatment unit, so that the COD, total phosphorus and fluoride in the wastewater meet the discharge standards, the total phosphorus removal rate can reach 99%, the fluoride ion removal rate is greater than 99%, and the COD removal rate is greater than 76%.