40 results about "Microbial decontamination" patented technology

The present invention discloses an air purification system for achieving carbon reduction through microbial purification, which relates to the field of air purification technology and solves the problems that in the existing process of using microorganisms to purify the air, toxic and harmful substances in the air can easily affect the activity of microorganisms, different types of microorganisms have different degrees of adaptability to carbon dioxide concentrations, and microorganisms in the purified gas can easily cause harm to personnel. An air purification system for achieving carbon reduction through microbial purification comprises a purification and protection mechanism, a disinfection and air outlet mechanism, and an algae cultivation mechanism. A disinfection and air outlet mechanism is installed on the inner side of the bottom end of the purification and protection mechanism, and an algae cultivation mechanism is installed on the inner side of the upper end of the purification and protection mechanism. The present invention can effectively improve the degree of carbon reduction by using different types of microorganisms to purify the air step by step, and can disinfect and sterilize the purified air to prevent microorganisms from being adsorbed by personnel and causing harm.

The invention discloses a water quality purification system based on a heterogeneous catalytic material and an ecological floating bed. The water quality purification system comprises a floating bed device, a purification device, a fixing device and a water moving trolley, the floating bed device comprises a floating bed carrier and aquatic plants planted on the floating bed carrier; root systems of the aquatic plants extend into the water, and microorganisms are attached to the root systems; the purification device is arranged on the floating bed carrier, is in contact with water flow and comprises a plurality of purification assemblies distributed on the floating bed carrier at intervals, and each purification assembly comprises a purification bag suspended on the floating bed carrier and a heterogeneous catalytic material loaded in the purification bag; the fixing device is arranged on the floating bed carrier and fixes the floating bed carrier on the water surface of a target area; the water moving trolley is connected with the floating bed carrier and drives the floating bed carrier to the water surface of the target area; according to the water quality purification system disclosed by the invention, a material-plant-microorganism three-in-one synergistic purification framework is constructed, and the potential of an ecological floating bed in the aspects of sustainable pollution control and phosphorus resource recovery is remarkably enhanced.

The invention relates to the technical field of water pollution treatment, in particular to an artificial composite ecological wetland system for water nutrient pretreatment, which comprises a water inlet forebay, a sedimentation tank, a collection channel, a water distribution channel I, a biological contact oxidation area, a water distribution channel II, a composite ecological wetland area and a water storage area, according to the micro-polluted water treatment system, a three-stage series connection structure of the sedimentation tank, the composite ecological wetland area and the water storage area is arranged, and efficient removal of nutrients such as nitrogen and phosphorus in micro-polluted water is realized by combining an intelligent regulation and control technology; and a multi-layer ecological purification system is formed through the composite ecological wetland area to treat the water body, so that the system has the characteristics of high purification efficiency, low operation cost, simplicity and convenience in maintenance and the like, and is particularly suitable for pre-pretreatment of a drinking water source area and ecological restoration of a micro-polluted water body.

Provided is a microbial clean air delivery rate test method based on a solid impactor sampler. In the method, a solid impactor sampler is used to perform sampling; and on the basis of a proposed method for establishing sampling time schemes corresponding to different microbial clean air delivery rates, testing is performed to obtain a purification decay curve of microbial aerosol concentration for an air purification product in an enclosed environment, linear fitting is performed on exponential concentration to obtain a decay constant, and then conversion is performed to obtain a microbial clean air delivery rate value. The method has the advantages of high reproducibility, low test cost, high test efficiency, wide detection range, etc., can achieve the effective characterization of the purification rate of air purification products for airborne microbial particles, and can realize differentiation between air purification products having different microbial purification rates. Therefore, a test method for evaluating the microbial purification rate performance in the field of air purification products is provided.

A denitrification filter comprises: a first unit comprising: an inlet located at the lower portion of the first unit; the autotrophic filler layer is positioned at the upper part of the first unit, and the wastewater is purified by autotrophic microorganisms in the autotrophic filler layer; a second unit disposed adjacent to the first unit in a horizontal direction, the second unit including: an outlet at a lower portion of the second unit; the heterotrophic filler layer is positioned at the upper part of the second unit, and the wastewater is purified by heterotrophic microorganisms in the heterotrophic filler layer; wherein in the filtering mode, wastewater sequentially flows through the inlet, the autotrophic filler layer, the heterotrophic filler layer and the outlet.

The present application relates to sewage treatment technical field, specifically to a kind of acrylonitrile sewage treatment device, comprising: microbial purification tank, exhaust mechanism, the exhaust mechanism has two and symmetrically set in the two sides of the inner wall of microbial purification tank width direction, the exhaust mechanism includes the cavity plate fixedly connected in the inner wall of microbial purification tank. By cavity plate, partition block and air separation assembly in exhaust mechanism, air can be injected and extracted into microbial purification tank, so as to provide corresponding purification environment for aerobic microorganism or anaerobic microorganism to purify sewage, and then realize that when injecting air, air exposure area and immersion area can inject air into microbial purification tank simultaneously to provide sufficient oxygen for aerobic microorganism to purify sewage, help its efficient decomposition of pollutants in sewage, while when extracting air, air separation assembly disconnects the communication of air exposure area and immersion area, so that suction airflow is only discharged from air exposure area, avoid sewage from flowing out with cavity plate, while avoiding suction airflow from immersion area to interfere with anaerobic environment in tank.

The utility model relates to the technical field of ecological purification, in particular to a riverway ecological filtering structure which comprises a closed filter tank, a water distribution chamber and a water collection chamber are arranged at the two ends in the filter tank respectively and communicated with a water inlet pipe and a water drainage pipe through water pumps respectively, and a port of the water inlet pipe is communicated with a floating object filtering barrel. An S-shaped channel is arranged between the water distribution chamber and the water collection chamber in the filter tank, and a cobblestone supporting layer, a microorganism purification layer and a sandy soil layer are laid in the channel from bottom to top. During use, negative pressure is formed in the floating object filtering barrel under the action of the water pump, and floating objects on the river surface are guided and intercepted in the barrel. And then river water enters the channel and is discharged into the river channel again after being subjected to interception of fine impurities by the sandy soil layer twice and decomposition of organic matters in the water by metabolism activity of microorganisms in the microorganism purification layer. And the secondary purification and filtering effects are greatly improved. Moreover, the river water is actively sucked, so that the purifying and filtering amount of the river water is greatly increased, and the filtering and purifying efficiency of the river water is further improved.

The invention relates to the technical field of sewage treatment, in particular to an acrylonitrile sewage treatment device which comprises a microorganism purification box and two discharge and suction mechanisms, the discharge and suction mechanisms are symmetrically arranged on the inner walls of the two sides of the microorganism purification box in the width direction, and each discharge and suction mechanism comprises a cavity plate fixedly connected to the inner wall of the microorganism purification box. Through a hollow cavity plate, a separation block and an air separation assembly in the discharge and suction mechanism, air can be injected into and sucked into the microorganism purification box, so that a corresponding purification environment is provided for sewage purification by aerobic microorganisms or anaerobic microorganisms, and the sewage purification efficiency is improved when the air is injected. The exposed area and the water soaking area can inject air into the microorganism purification box at the same time to provide sufficient oxygen for aerobic microorganism purification sewage and assist the aerobic microorganism purification box to efficiently decompose pollutants in the sewage, and when air is sucked, the air separation assembly separates the exposed area from the water soaking area, so that suction airflow is only discharged from the exposed area, the sewage is prevented from flowing out along with the cavity plate, and the service life of the sewage is prolonged. Meanwhile, suction airflow discharged by the soaking area is prevented from interfering the anaerobic environment in the box.

The application discloses a method and system for purifying ammonia-nitrogen wastewater by using oyster shell reinforced photosynthetic microorganisms. Seed liquid is obtained by culturing and enriching Rhodopseudomonas palustris, Rhodospirillum profundum, Sulfurspirochaeta shaposhnikovii and Rhodopseudomonas coprophila, and the above photosynthetic microorganisms are used as the core for purifying ammonia-nitrogen wastewater. The photosynthesis of the photosynthetic microorganisms absorbs light energy, converts the light energy into chemical energy, reduces the ammonia-nitrogen in the wastewater into inorganic nitrogen gas by using the chemical energy, and fixes CO2 in the air into biological organic matter, so that the removal of ammonia-nitrogen in the wastewater and the growth and reproduction of the photosynthetic microorganisms are realized. In the application, the photosynthetic microorganisms are used for denitrification, the carbon source input cost in the ammonia-nitrogen wastewater treatment process is greatly reduced, the discarded oyster shell is used as a biological carrier, the pH value of the wastewater can be corrected and CO2 in the water body can be supplemented, and the photosynthetic microorganisms are provided with a favorable growth and reproduction environment and a denitrification environment, and meanwhile, the discarded oyster shell can be treated in a reduced amount.

This invention discloses a high-concentration wastewater pretreatment device, relating to the field of wastewater treatment technology. It includes: a treatment tank with a sedimentation chamber; wherein the sedimentation chamber contains a filter element, which is inclined; a transfer tank connected to one side of the treatment tank; wherein the transfer tank has multiple reaction elements and multiple linear adjustment elements for driving the reaction elements to move vertically; and a purification cylinder horizontally positioned on the side of the transfer tank away from the treatment tank, and connected to the transfer tank. This invention treats wastewater through multiple steps, completing preliminary filtration, oxidation purification, membrane interception, and microbial purification, thereby treating different types of pollutants in the wastewater separately and improving the wastewater treatment effect. Simultaneously, it can also centrally treat solid sediments and gaseous waste generated during the treatment process. The operation is simple, convenient, and highly practical.

The invention discloses a wastewater treatment device for synthesis of 5-methyltetrahydrofolic acid, and relates to the technical field of wastewater treatment.The wastewater treatment device comprises a rotating aeration mechanism and a first rotating ring installed on the outer side of the rotating aeration mechanism, a purification mechanism is arranged on the outer side of the rotating aeration mechanism, and a connecting bent pipe is arranged at the bottom of the purification mechanism; the rotating aeration mechanism comprises two rotating sleeves, rotating brackets are symmetrically mounted on the outer side of the rotating sleeve on one side, a rotating connecting shaft is rotatably connected to the top of each rotating bracket, a rotating knob is fixedly mounted at the top of each rotating connecting shaft, and a rotating shaft is fixedly mounted at the top of each rotating knob. A rotating worm is fixedly mounted at the bottom of the rotating connecting shaft, an anaerobic degradation environment for anaerobic microorganisms can be provided in a rotating manner, and an aerobic degradation environment for aerobic microorganisms can also be provided, so that the sewage purification effect of the microorganisms is improved.

The invention belongs to the technical field of aquaculture, and particularly relates to a shrimp seed thickness marking device and method based on microbial floc ectopic culture, the device comprises a seed marking pond, a heterotrophic microorganism purification pond and a carbon source adding device, the interior of a porous escape-proof vertical pipe is communicated with a gravity self-flowing drainage pipe; the water flows into the floc anti-escape screen frame of the heterotrophic microorganism purification tank through the gravity self-flowing drainage pipe, the bottom between the purification tank body and the inner floc anti-escape screen frame is communicated with a circulating pump water inlet pipe, the water flows into the standard seedling tank body through a circulating pump, and the carbon source adding device is communicated with the interior of the floc anti-escape screen frame and adds a carbon source solution into the floc anti-escape screen frame. According to the method, automatic culture and management of cenobium biomass can be realized according to daily feeding conditions and brush cleaning frequency, and the water quality of a standard seedling pond is controlled at a safe concentration.

The utility model relates to an integrated nitrification and denitrification microbial purifier for aquaculture water, which is characterized in that an oxygen supply device, an internal circulation infusion device and a sediment drainage device are controlled by a control device according to time, the working time period of a biological filler bin is divided into a nitrification time period and a denitrification time period, and a nitrification reaction and a denitrification reaction are switched; in the nitrification period, the biological filler bin is in an aerobic environment, the activity of anaerobic microorganisms is inhibited, and the aerobic microorganisms can perform normal nitrification reaction; in the denitrification period, the oxygen supply device is closed, the sediment drainage device draws sediment mixed liquid on the bottom layer of the biological filler bin to the middle of the biological filler bin and releases the sediment mixed liquid, the biological filler bin is in an anaerobic environment, the activity of aerobic microorganisms is inhibited, the anaerobic microorganisms can be subjected to cultivation and denitrification degradation reaction in an anoxic state, and the anaerobic microorganisms can be subjected to denitrification degradation reaction. And the sediment mixed liquid can be used for necessary carbon source supplementation for the denitrification reaction.

The utility model discloses a factory-like circulating water fish culture system which comprises an artificial culture container, a settling pond, a first filter, a photocatalytic degradation device, a biochemical pond and a second filter which are sequentially connected, and a water outlet of the second filter is communicated with a water inlet of the artificial culture container. The photocatalytic degradation device comprises a tank body, a lower-layer filter plate, an upper-layer filter plate, a transparent tube group, an ultraviolet lamp tube and a transparent filler. The lower-layer filter plate is horizontally fixed in an inner cavity of the tank body, the upper-layer filter plate is positioned above the lower-layer filter plate, a transparent tube group is arranged between the lower-layer filter plate and the upper-layer filter plate, and the ultraviolet lamp tube is sealed in the transparent tube group. The spherical transparent filler is filled in a space between the lower-layer filter plate and the upper-layer filter plate, and a titanium dioxide photocatalyst is loaded on the surface of the transparent filler. The culture system can accelerate the removal efficiency of organic matters in culture circulating water, so that the treatment rate of a microbial purification link is accelerated, and the treatment process of the whole circulating water is accelerated.

The utility model discloses a kind of microbial purification capacity test test cabin, comprising: cabin, cabin has cabin door and is used for injecting microorganism microbial sample inlet, to be detected purification sample can pass through cabin door in and out cabin and can carry out microbial purification to air in cabin;Sensor is set in cabin, sensor can detect temperature and humidity in cabin;Temperature regulating assembly, temperature regulating assembly can adjust temperature in cabin;Humidity regulating assembly, humidity regulating assembly can adjust humidity in cabin;Microorganism injection assembly, the output end of microorganism injection assembly is communicated with microbial sample inlet and is used for injecting microorganism in cabin;Microorganism collection detection assembly, microorganism collection detection assembly can detect the content of microorganism in cabin.The above-mentioned microbial purification capacity test test cabin, the detection of the purification effect of to-be-detected purification sample is convenient.

The utility model provides an underwater microorganism purification device which comprises a supporting rod, a nutrient source supply mechanism, a microorganism growth attachment mechanism and an air source supply mechanism are arranged on the supporting rod, and the nutrient source supply mechanism is used for placing a solid nutrient source; the microorganism growth and attachment mechanism provides a carrier for growth of microorganisms and is located on the outer side of the nutrient source supply mechanism; the gas source supply mechanism is used for providing oxygen for the growth of microorganisms on the microorganism growth and attachment mechanism, and is positioned between the microorganism growth and attachment mechanism and the nutrient source supply mechanism. The nutrition supply mechanism is matched with the air source supply mechanism, so that nutrition supplement required by growth is provided for growth of microorganisms gathered on the microorganism attachment mechanism, the attraction range of the microorganisms is greatly widened, the attraction force is greatly reduced, the microorganism breeding and biofilm culturing efficiency is improved, and the water body purification capacity is greatly improved.

The instant disclosure relates to microbial decontamination of solid surfaces. The disclosure provides method for reducing or eliminating microbes from a solid surface by employing a combination of quaternary ammonium compound coating onto the solid surface and electric field application. Particularly, the method comprises subjecting a solid surface to an electric field comprising a voltage of 2 kV / cm to 6 kV / cm and a capacitance of 0.002 μF to 0.06 μF, to reduce or eliminate the microbes from the solid surface, wherein said solid surface comprises a coating of quaternary ammonium compound. Corresponding products including kit and solid material / device are also provided. The present method has several advantages including but not limiting to high efficiency (>4 log10 or >99.99%) in reducing / eliminating microbial load on solid surfaces; requirement of very low concentrations of quaternary ammonium compound [about 0.01% (w / v) to 1% (w / v)] to achieve said high efficiency; and shorter time-periods.

A device for the filtration and purification of wastewater, such as grey water, aimed at providing a new clean and safe water source, comprising: a tank for collecting the water to be treated, comprising an inlet or opening for routing the water to be treated and for discharging the water once filtered and purified; a biocarrier container, placed inside the tank, comprising a plurality of biocarriers containing grown microorganisms, which purify the water; an aeration unit configured to supply oxygen inside the tank in order to promote the aerobic metabolism of the microorganisms and to prevent the appearance of bad odors; and a biocarrier for the growth of microorganisms for the filtration and purification of wastewater.

The present application relates to a kind of water aquaculture water microbial purifier in the method for enhancing nitrification denitrification effect, the working time period of water aquaculture water microbial purifier is divided into nitrification time period and denitrification time period, effectively utilize the sludge mixed solution in the bottom of biological packing, not only can improve the utilization of equipment, realize nitrification denitrification complete process, also can reduce equipment space occupation;Under nitrification time period, biological packing is in aerobic environment, and aerobic microorganism can carry out normal nitrification reaction, reduce the ammonia content in biological packing;And under denitrification time period, the sludge mixed solution in the bottom of purifier is introduced into biological packing and released, reduce the oxygen content in biological packing, anaerobic microorganism can carry out cultivation and denitrification degradation reaction in this environment, and sludge mixed solution can supplement necessary carbon source for denitrification reaction, provide compensation function for guaranteeing denitrification process, strengthen sufficient nitrification denitrification effect.

Portable Microbial Decontamination Laboratory Device

The invention discloses comamonas testosteroni DP38 as well as a microbial agent and application thereof, and belongs to the technical field of microbial wastewater purification. According to the invention, a comamonas testosterone i DP38 capable of efficiently removing nitrogen and phosphorus is separated, the preservation number of the comamonas testosterone i DP38 is GDMCC No: 66845, and the comamonas testosterone i DP38 is further prepared into an immobilized bacterial agent. Experimental results show that the comamonas testosteroni DP38 disclosed by the invention has efficient denitrification effect and phosphorus accumulating capacity, and can be directly used for ectopic treatment of aquatic water. Compared with comamonas testosteroni DP38, the nitrogen and phosphorus removal performance of the immobilized microbial agent in culture tail water is further improved, nitrate and phosphate can be basically removed, and the total nitrogen removal rate reaches 91.19%. The invention provides a new biological material for treatment of aquaculture tail water, and has a wide prospect in the field of microbial purification of wastewater.

The invention discloses a point source water quality microorganism purification system for water ecological restoration, and relates to the technical field of water ecological restoration, the point source water quality microorganism purification system comprises a U-shaped first purification frame and a U-shaped second purification frame which are fixedly mounted on the surface of a mounting plate, and the first purification frame is located on the inner side of the second purification frame; in the process of carrying out microbial purification on sewage, when the water discharge amount of the sewage is small, the sewage is decomposed and purified by utilizing microorganisms in the first purification frame, and when the water discharge amount of the sewage is increased to a certain degree, the discharge port is blocked, so that the sewage treated and purified by the first purification frame flows into the second purification frame; and secondary purification is carried out, so that the sewage treatment and purification effect is ensured when the sewage discharge capacity is increased, and the situation that when the sewage discharge capacity is increased, the microbiological treatment efficiency in the first purification frame is not enough to meet the treatment and purification of excessive sewage, so that the sewage which is not thoroughly purified is re-discharged into a river to pollute a water body is avoided.

The utility model provides a waste gas treatment device. The waste gas treatment device comprises an air inlet channel; the air outlet end of the air inlet channel is communicated with an air inlet of the microorganism purification tower; the microorganism purification part is arranged in the microorganism purification tower and is used for purifying the waste gas; the waste gas concentration detection piece is arranged on the air inlet channel and is used for detecting the concentration of waste gas in one end, communicated with the microorganism purification tower, of the air inlet channel; the concentration adjusting structure is used for adjusting the concentration of the waste gas in the microbial purification tower. The problems that in the prior art, due to the fact that the concentration fluctuation of pollutants such as VOCS and hydrogen sulfide in waste gas is large, the microbial purification unit is impacted, even poisoning death of microorganisms is possibly caused, and the treatment capacity of the microbial purification unit is reduced are solved.

The utility model discloses a riverway reoxygenation purification system which comprises circulating reoxygenation purification subsystems, each circulating reoxygenation purification subsystem comprises a counterweight unit, a microorganism purification unit and a transverse circulation unit, and when the number of the circulating reoxygenation purification subsystems is multiple, the circulating reoxygenation purification subsystems are arranged in the flow direction of a riverway. The microorganism purification unit comprises a purification filler suitable for attachment growth of microorganisms so as to purify a river water body; the transverse circulation unit is matched with a nozzle through a circulation flow making pump, so that water flowing is enhanced, and formation of a dead water area is avoided to the greatest extent; meanwhile, when a plurality of groups of circulating reoxygenation purification subsystems are arranged, the circulating reoxygenation purification subsystems are arranged along the flow direction of the river channel, the natural river channel form is simulated, the flow state is improved, and the fluid change is increased. The device has double functions of physical filtration and biological purification on incoming water of a river, meets the multi-layer reoxygenation requirement of a river channel, increases the reoxygenation control area, is good in purification effect, simulates a natural river channel and increases fluid change.

The invention provides pickle factory wastewater treatment equipment, and relates to the technical field of wastewater treatment.The pickle factory wastewater treatment equipment comprises a treatment box, a storage structure is arranged on the treatment box, a filtering structure, a flocculation structure and a purification structure are arranged in the treatment box, a first rotating shaft and a second rotating shaft are rotationally matched in the treatment box, and a driving structure is arranged at the top of the treatment box; the driving structure corresponds to the first rotating shaft, a connecting structure is arranged between the first rotating shaft and the second rotating shaft, a stirring structure is arranged in the flocculation structure, the stirring structure corresponds to the first rotating shaft, the second rotating shaft and the connecting structure, and a cleaning structure is arranged in the filtering structure. According to the device, the filter structure, the flocculation structure and the purification structure are mounted in the treatment box, wastewater can be filtered through the filter structure, flocculation and pH value change can be performed through the flocculation structure, and microbial purification can be performed through the purification structure, so that the wastewater of the pickle factory is well purified, and the situation that the wastewater of the pickle factory is directly discharged to pollute a water source is prevented.

The application discloses a river sewage outlet purification device with a microbial purification function and relates to the technical field of sewage treatment. The device comprises a microbial treatment tank, a first filter screen and a second filter screen fixedly connected to the inner side of the microbial treatment tank, and the two ends of the first filter screen and the second filter screen are fixedly connected through half-arc partition plates, a back-shaped channel is formed through the first filter screen, the second filter screen and the two half-arc partition plates, and the back-shaped channel is filled with microbial fillers. Through the gradient filler structure of the loose water inlet side and the compact water outlet side, the device realizes anti-clogging and fine filtration by grading and intercepting coarse and fine impurities, simultaneously constructs an aerobic-anoxic composite microbial population environment, synchronously completes the removal of easily degradable organic matter, the nitrification of ammonia nitrogen, the deep degradation of refractory organic matter and denitrification, avoids dead angles through micro-turbulent flow reinforced mass transfer, and significantly improves the water quality of the outlet water and the system operation stability.

Provided is a sewage purification apparatus abnormality detection system that can detect the aeration and water level conditions in the sewage purification apparatus and more accurately and effectively detect abnormalities in the sewage purification apparatus. [Solution] An abnormality detection system for a sewage purification device that uses a blower 22 to send air into the inside of a septic tank 10 to aerate it and purify the sewage W2 inside the septic tank 10 using aerobic microorganisms, and is equipped with a float 1 that is installed on the surface of the sewage W2 inside the septic tank 10 and can sway in accordance with the swaying of the surface of the sewage W2, a vibration sensor 6 installed inside the float 1, a management device 30 that receives a detection signal sent from the vibration sensor 6, an abnormality determination means 34 that determines that there is an abnormality if the magnitude of the vibration of the float 1 calculated from the detection signal of the vibration sensor 6 is below a reference value, and an abnormality notification means 35 that issues an abnormality signal based on the determination by the abnormality determination means 34.

The utility model relates to the technical field of mixed gas purification treatment, in particular to a multi-stage impurity gas treatment and recycling system for methane-containing mixed gas, which comprises a gas inlet pipeline for collecting mixed gas and conveying the mixed gas to a purification device; the purification device comprises a pre-treatment device, a primary filtering device, a biological purification device and a membrane separation device which are communicated in sequence; the biological purification device comprises a microorganism purification vessel used for consuming and treating gases such as H2S and NH3, the membrane separation device comprises a separation cavity, and a separation membrane allowing CH4 to penetrate through is arranged in the separation cavity; the storage device comprises a plurality of storage tanks for storing CH4; and the recycling device is used for obtaining CH4 for combustion power generation or combustion heat supply. Original acid and alkaline gas and other impurities are removed through the purification device, combustible gas containing CH4 is obtained and recycled, combustion power generation or combustion heat supply is carried out when needed, the waste gas reutilization rate is greatly increased, and pollution hazards to the environment are avoided.

The application provides a kind of artificial wetland demonstration project for purifying fluoride and nutrient elements in agricultural irrigation and drainage of the south bank of Yellow River and a building and operating method, and belongs to the technical field of agricultural drainage pollution control.The demonstration project mainly includes a pool body, an anaerobic zone, an aerobic zone, an adsorption zone, a water inlet system, a drainage system, a plant purification system, a microbial purification system, a filler purification system, a reflux system and an oxygen exposure system.The plant purification system includes floating plates, matching flowerpots, nutrient soil and reeds.The microbial purification system includes denitrifying bacteria, nitrifying bacteria and phosphorus accumulating bacteria inoculated in the anaerobic zone and the aerobic zone, and corn cob carbon source.The filler purification system includes modified zeolite fillers filled in the adsorption zone.The project can effectively remove fluoride and nutrient elements in agricultural irrigation and drainage of the south bank of Yellow River, is economical and environmentally friendly, and has good popularization and application value.