135 results about "Ammonia emission" patented technology

The invention discloses a composite microecological preparation as well as a preparation method and application thereof. The compound microecological preparation disclosed by the invention comprises lactobacillus casei, lactobacillus plantarum and saccharomyces cerevisiae. The application effect of the composite microecological preparation in cow breeding is remarkable, the optimal addition amount of the composite microecological preparation is 100 mL / cow / day, the production performance of lactating cows can be improved, the milk yield is improved by 3.30 kg / cow / day, the milk yield of 4% standard milk is improved by 3.78 kg / cow / day, the total protein is improved by 15.9%, the albumin is improved by 14.7%, the globulin is improved by 16.5%, and the somatic cell number is reduced by 52.6%; and pollutant emission can be reduced, including 37.2% of ammonia emission reduction and 28.7% of carbon dioxide emission reduction.

The invention relates to the technical field of microorganisms and particularly discloses paenibacillus mucilaginosus as well as a microbial agent and application thereof. The preservation number of the paenibacillus mucilaginosus N-002 is CGMCC (China General Microbiological Culture Collection Center) No.32752, and the preservation number of the paenibacillus mucilaginosus N-002 is CGMCC No.32752. The paenibacillus mucilaginosus N-002 provided by the invention can produce a urease inhibitor and indoleacetic acid at high yield and has no denitrification effect, the urease inhibitor produced by the paenibacillus mucilaginosus N-002 can reduce the urease activity of soil, significantly reduce the ammonia emission and nitrous oxide emission of the soil, especially after a nitrogen fertilizer is applied, is beneficial to soil nitrogen element maintenance, improves the fertilizer efficiency of the nitrogen fertilizer, and has a good application prospect. Meanwhile, the influence of emission of ammonia and nitrous oxide on the environment is reduced; the strain has no denitrification effect, and can increase the proportion of non-denitrifying bacteria in soil and reduce the denitrification effect of the soil after being applied to the soil, so that the emission of nitrous oxide in the soil is reduced, and environmental protection is facilitated.

The invention discloses an in-cylinder combustion process and chemical reaction mechanism-based hydrogen ammonia emission generation prediction system and method, and relates to the technical field of hydrogen internal combustion engine tail gas emission control, and the system comprises an input variable acquisition module, a combustion simulation module, a chemical reaction simulation module, an emission generation prediction module and an output interface module; according to the method, a mechanism-driven multi-physics field coupling prediction system is constructed, the simplified assumption limitation of a traditional empirical model is broken through, high-precision dynamic analysis of the emission characteristics of the hydrogen-ammonia engine is achieved, in combustion process simulation, in-cylinder turbulence mixing and flame propagation details are accurately described by using a CFD model, and in-cylinder combustion simulation is achieved. The chemical reaction module can significantly improve the prediction credibility of unburned fuel residues and pollutant generation through sensitivity analysis and mechanism optimization, in addition, through real-time coupling sensor data and simulation calculation, the abnormal emission trend can be pre-judged in advance, and a feedforward control basis is provided for the ammonia injection amount, the EGR rate and the ignition angle.

The utility model discloses a comprehensive utilization system for tablet vanadium calcining flue gas, which is characterized in that a first regulating valve is arranged on a flue gas pipeline between a chimney I and an induced draft fan I, a calcining flue gas return main pipe is arranged on the flue gas pipeline, and the calcining flue gas return main pipe is divided into four branch pipes. According to the comprehensive utilization system, the tablet vanadium three-step method calcination flue gas is led back to be supplied to the melting furnace and the calcination flue gas furnace for low-oxygen gas combustion and supplied to the calcination flue gas furnace and the flash evaporation drying machine for low-temperature flue gas mixing, and the purposes of saving energy of a production line and reducing the oxygen content of the system are achieved. In addition, after tablet vanadium is calcined through a three-step method, ammonia-containing flue gas is led back to be used as a low-oxygen combustion-supporting body for combustion of a melting furnace and a calcination flue gas furnace, ammonia gas is decomposed into hydrogen and nitrogen, and pollution-free water vapor is generated after hydrogen is combusted. The problems of ammonia emission pollution and treatment are successfully solved, the investment and operation cost of the whole system is reduced, and meanwhile fuel consumption is reduced.

The invention belongs to the technical field of ships, and discloses a marine ammonia gas treatment system and a treatment method. The marine ammonia gas treatment system comprises an ammonia gas collecting tank, a first treatment tank, a second treatment tank, a third treatment tank and a waste liquid collecting tank, wherein the ammonia gas collecting tank is used for recycling ammonia gas generated by a marine ammonia fuel system; an outlet of the ammonia gas collecting tank is communicated with the first treatment tank; the first liquid discharge pipe is in heat exchange connection with the first heat exchanger; the exhaust port of the first treatment tank is communicated with the second treatment tank; the second liquid discharge pipe is in heat exchange connection with the second heat exchanger; an exhaust port of the second treatment tank is communicated with a third treatment tank, the top of the third treatment tank is communicated with a third water spraying pipe, and an acid solution flows in the third water spraying pipe; the first liquid discharge pipe is selectively communicated with the waste liquid collection tank and the first water spray pipe, and the second liquid discharge pipe is selectively communicated with the waste liquid collection tank and the second water spray pipe. The ammonia gas treatment system has the advantages of high absorption efficiency, low cost, safety and reliability, and ensures that the ammonia gas emission concentration meets the environmental protection standard.

The invention discloses a kitchen waste biological treatment and emission reduction storage method and application thereof. By adding a compound lactic acid bacteria preparation, odor emission caused by rapid acidification and reproduction mildewing and corruption in the material storage process is achieved. Meanwhile, before the hermetia illucens is converted into the kitchen waste, zygosaccharomyces bayer with the acidophilic characteristic is added for secondary fermentation, organic acid (VFAs) and ammonia nitrogen in the material are converted into yeast protein, the inhibition effect of free organic acid on growth and reproduction of hermetia illucens larvae is reduced, inorganic ammonia nitrogen is converted into biological organic nitrogen (amino acid and the like), and the biological organic nitrogen is converted into biological organic nitrogen (amino acid and the like); organic carbon of the material is converted into soluble nutrients (SCOD) which are more easily absorbed by the hermetia illucens, so that the larvae of the hermetia illucens are promoted to quickly and efficiently convert the kitchen waste, and the volatilization of ammonia ions in the conversion process of the hermetia illucens is reduced. The related technology provided by the invention is beneficial to ammonia emission reduction and quality and efficiency improvement in the process of industrial breeding of hermetia illucens.

The invention discloses a staged cracking ammonia internal combustion engine system which comprises an ammonia supply system, a first-stage catalytic cracker and a combustion chamber, the combustion chamber is connected with an air inlet channel and an exhaust channel, and a spark plug is installed on the combustion chamber; the ammonia supply system is used for providing low-pressure gaseous ammonia, the ammonia supply system is connected with an inlet of the first-stage catalytic cracker, and an outlet of the first-stage catalytic cracker is connected with the gas inlet channel; the first-stage catalytic cracker is connected with the exhaust passage through an exhaust branch pipe, a low-temperature catalyst for catalyzing ammonia to be decomposed into hydrogen and nitrogen is arranged in the first-stage catalytic cracker, and the inner wall of the combustion chamber is coated with a second-stage ammonia catalyst coating. Staged ammonia cracking is carried out at low temperature and high temperature, a small amount of ammonia is decomposed by the first-stage catalytic cracker to generate hydrogen, the ignition energy of the ammonia can be remarkably reduced by the small amount of hydrogen, and the flame propagation speed of ammonia combustion is increased; the secondary cracking in the combustion chamber efficiently decomposes ammonia through a catalyst coating, so that the oxidation rate and the combustion efficiency of ammonia are improved, and the emission of unburned ammonia is reduced.

This invention relates to the field of wastewater treatment technology and discloses a method for controlling ammonia emission reduction and stabilization during the storage and fermentation of a fecal-water mixture. This method addresses the problem in traditional methods of achieving coordinated control of ammonia volatilization inhibition and stabilization during the storage and fermentation process of a fecal-water mixture with continuously fluctuating composition and fermentation activity. The method first divides the incoming materials into batches and identifies their state to determine the volatilization risk state and fermentation acceptance state. During the storage stage, it performs graded control, continuous verification, and activity recovery treatment. After meeting the transition conditions, it implements fermentation transition control. During the fermentation stage, it sequentially performs stabilization advancement, stabilization control, and abnormal regression treatment, thereby achieving coordinated control of ammonia volatilization inhibition and stabilization during the storage and fermentation of the fecal-water mixture.

The invention discloses a urea multi-strand ammonia gas treatment and recovery system and method based on safety. According to the method, low-pressure absorption tower emptying tail gas and exhaust funnel emptying tail gas are combined for treatment, and methods of online monitoring, multi-stage absorption demisting, fire retardance, carbon dioxide absorption, ammonia recovery, multi-stage cooling and the like are adopted, so that the explosion risk is reduced, the enterprise safety is ensured, ammonia in the low-pressure absorption tower emptying tail gas and the exhaust funnel emptying tail gas is reduced to 20mg / Nm < 3 >, and the energy consumption is reduced. The numerical value is far lower than 30mg / Nm < 3 > required by the environmental protection laws, the excellent performance of the method in the aspect of reducing ammonia emission is embodied, meanwhile, ammonia products are recycled, and recycling of ammonia resources is achieved.

The utility model discloses a granulation tail gas dust removal tower which is characterized in that an inner cylinder is arranged in a tower body, and a supporting assembly is fixedly arranged above the tower body; the upper section of the inner cylinder is fixedly mounted on the supporting assembly, and the lower section of the inner cylinder is connected with the water curtain; the efficient blade demister is fixedly installed on the lower sealing plate, and the lower sealing plate is fixedly installed on the supporting assembly. One end of the downcomer is mounted on the lower sealing plate, and the other end leads into the inner cylinder; the upper sealing plate is fixedly mounted on the efficient blade demister; the blade backwashing device is mounted at the upper section of the inner cylinder and comprises two parts, one part is positioned on a main spraying device in front of a blade, and the other part is introduced into a blade box and is positioned on an auxiliary spraying device right above the blade; and meanwhile, a three-stage spray washing device is fixedly mounted in the inner cylinder and is positioned below the efficient blade demister. The urea prilling tower solves the problems that a traditional urea prilling tower is low in washing efficiency, high in requirement for circulating water amount, substandard in dust and ammonia emission and the like.

The invention belongs to the technical field of additives, and discloses a treating agent for reducing ammonia escape concentration in cement kiln tail gas and a preparation method of the treating agent. The treatment agent comprises 10 to 16 parts of an adsorbent, 1 to 5 parts of a precipitating agent, 0.2 to 0.5 part of a metal buffering agent, 0.1 to 0.3 part of a surfactant and 20 to 32 parts of water. The treating agent disclosed by the invention solves the problem that the ammonia escape concentration in the cement kiln tail gas exceeds the standard due to excessive ammonia spraying in a denitration project, avoids the risk of secondary pollution caused by ammonia emission, and meets the national ultra-low emission limit requirement. Meanwhile, the treating agent is non-toxic and harmless, low in cost, simple in field operation and low in equipment investment, and assists and enables green development of cement enterprises.

The invention discloses a continuous feeding type ammonia reducing-nitrogen preserving-maturing promoting composting reactor and method, and belongs to the technical field of organic solid waste resourceful treatment and environmental engineering. The device adopts a mode of'four-zone sectional treatment + internal odor circulation + water vapor / ammonia gas management + adaptive aeration control 'to realize continuous feeding, zone synergistic fermentation and efficient nitrogen interception. The reactor integrates an ammonia gas and odor reduction unit in which electrodes assist microorganisms, a circulating pump drives gas to flow back, and a selective membrane is combined with activated carbon, and an aeration regulation and control system based on oxygen concentration feedback. And when a fermentation period is completed in about 20 days, ammonia emission and nitrogen loss are effectively reduced, decomposition is promoted, the quality of a compost product is improved, and the engineering value capable of being amplified and applied is achieved.

The invention relates to the field of environmental microbial technology and agricultural waste recycling, in particular to paracoccus pantotrophus and a microbial agent and application thereof. The strain is Paracoccus pantotrophus XDF08, and is preserved in the China General Microbiological Culture Collection Center, called CGMCC for short, the preservation address is Institute of Microbiology, Chinese Academy of Sciences, No.3, No.1 Yard, Beichen West Road, Chaoyang District, Beijing, the preservation date is July 14, 2025, and the preservation number is CGMCC NO. 35225. The invention further discloses a preparation method of the paracoccus pantotrophus XDF08. The strain and the microbial inoculum thereof are applied to the composting process of agricultural wastes, can achieve the dual goals of reducing ammonia emission from the source and improving the quality of compost products, and have the advantages of low cost, simplicity and convenience in operation, greenness, environmental protection and the like.

The invention relates to the technical field of indoor air purifiers, and discloses a farm environment processor for reducing ammonia emission in a breeding house, the farm environment processor comprises a shell, a circulating water tank is fixedly connected in the shell, and a filter plate is fixedly connected in the circulating water tank; a spraying assembly, a pollution discharge assembly and a water injection assembly are arranged in the shell, the spraying assembly, the pollution discharge assembly and the water injection assembly are all arranged on one side of the circulating water tank, a stirring assembly is arranged in the circulating water tank, and a cleaning assembly is arranged at the top of a filter plate. And the spraying assembly can spray liquid in the circulating water tank, so that ammonia gas is removed. Water can be added into the circulating water tank through the floating ball valve, the rotating blades drive the stirring shaft to rotate and the scraping plate to move, the stirring shaft rotates to fully mix liquid and medicine liquid, so that the decomposition effect is ensured, and the scraping plate moves to clean the filter plate.

The invention discloses a localized accounting method for ammonia emission and emission reduction of a large-scale livestock and poultry farm. The method comprises the following steps: dividing the large-scale livestock and poultry farm into a colony house ammonia emission node, a liquid manure treatment link ammonia emission node and a solid manure treatment link ammonia emission node according to ammonia emission nodes; determining an ammonia emission coefficient of each ammonia emission node, a nitrogen loss ratio of ammonia at each node, a localized correction coefficient of each node and an ammonia emission reduction rate of implementing an ammonia emission reduction measure, determining an ammonia emission amount of each ammonia emission node according to the parameters, adding the ammonia emission amounts of the ammonia emission nodes, and determining the ammonia emission amount of each ammonia emission node according to the added ammonia emission amount. The ammonia emission of the large-scale livestock and poultry farm is obtained; calculating the difference between the standard year ammonia emission and the target year ammonia emission of the large-scale livestock and poultry farm to obtain the emission reduction, and finally obtaining the total emission reduction of the target year ammonia of the large-scale livestock and poultry farm in the target area. The method covers the ammonia emission link of the whole chain of the farm, avoids the missing of potential emission sources, and remarkably improves the accounting precision.

The present application relates to the technical field of agricultural breeding, and discloses a large-scale cage feeding method for low-nitrogen emission broiler chickens, which comprises a nutrition regulation module, a feeding environment management module, a harmless and resourceful treatment module for manure, and an intelligent monitoring module. The present application constructs a whole-chain low-nitrogen emission system from "feed source, feeding process, and end treatment". This systematic integration ensures that nitrogen is effectively controlled at each link, and minimizes ammonia emission and nitrogen pollution. The present application directly reduces about 15-20% of nitrogen intake and excretion by using low-protein daily feed and precise amino acid balance. In combination with the inhibition of urease by additives such as yucca extract, the purpose of controlling ammonia pollution from the source is achieved.

The present application relates to a method for preparing organic soil by geopolymer KETOS and excrement biogas residue, and belongs to the technical field of agricultural soil repair and organic waste resource utilization. The method uses geopolymer KETOS with three-dimensional network inorganic framework and multi-stage interconnected pore structure as a porous mineral framework carrier, mixes it with livestock and poultry excrement and biogas residue, and carries out aerobic combined composting, so that organic matter and microorganisms are colonized in the pores of the geopolymer KETOS, forming functional organic soil with inorganic, organic and biological composite structure. The present application synchronously solves the two difficult problems of organic waste treatment and soil structure improvement, shortens the composting period by 30% to 50%, reduces ammonia emission by more than 60%, increases water retention rate by 60% to 120%, and the obtained product has multiple functions such as long-acting soil improvement, water and fertilizer retention, nutrient slow release, etc., can replace traditional materials such as vermiculite and perlite, and has wide application prospect.

The invention relates to a method for distinguishing between nitrogen oxide emissions and ammonia emissions after treatment by a catalytic converter of an exhaust line of an internal combustion engine of a thermal motor vehicle comprising a step of controlling the voltage (E1) of the sensor for measuring the nitrogen oxide concentration; a step of controlling a voltage gradient (E2) and the oxygen voltage of the catalytic converter; an ammonia detection step (E3); a step of measuring the temperature (E4) of the catalytic converter by the temperature determination means; a step of controlling the oxygen concentration (E5) in the catalytic converter; a step of correcting the nitrogen oxide concentration (E6); a step of determining a correction factor (E7); a step of correcting the ammonia concentration (E8). Figure 1

The present invention relates to a composition comprising platinum supported on titanium oxide, the platinum particles having an average particle diameter of 50-200 nm. The composition has a surprisingly low light-off temperature for the ammonia oxidation and a high selectivity for oxidation to N2.

The invention belongs to the technical field of tail gas recovery and utilization, and particularly relates to a crude benzene hydrogenation device ammonia-sulfur tail gas double-effect recovery and comprehensive utilization device which comprises a first base, an ammonia washing tank, a second base, a desulfurizer and the like. The first base and the second base are arranged side by side and serve as a mounting carrier of the device, an ammonia washing tank is mounted on the first base, water for dissolving ammonia gas is arranged in the ammonia washing tank, two openings are formed in the lower part of the ammonia washing tank, one opening is a waste gas inlet for introducing ammonia-sulfur tail gas, and the other opening is an ammonia water outlet. Through combination of the ammonia washing tank, the desulfurizer and the boiler room, ammonia and hydrogen sulfide in tail gas are gradually removed, ammonia water generated by the ammonia washing tank is fed into the boiler room for denitration, ammonia gas emission is reduced, a reducing agent needed by denitration is provided for the boiler room, and the boiler room can be recycled. And the sodium hydrosulfide solution generated in the desulfurization process can be sold as a commodity, so that the economic benefit is increased.

The invention belongs to the technical field of vehicle detection, and discloses a vehicle ammonia escape online detection method, system and terminal based on big data. The method comprises the following steps: acquiring real-time data of ammonia emission concentration, identifying ammonia escape peak value concentration from the real-time data, and outputting a starting time point corresponding to the ammonia escape peak value concentration; based on the starting time point, an inspection period including a first inspection period and a second inspection period is set, the first inspection period is corrected to determine a first correction period, and a second correction period is determined based on the second inspection period. According to the method, discontinuous accidental ammonia escape caused by instantaneous fluctuation of the sensor or environmental interference is filtered out, so that an isolated and irregular data peak is prevented from being misjudged as a real ammonia escape event.

The invention belongs to the field of organic waste resource utilization, and particularly relates to a system for reducing ammonia emission in compost and producing a nitrogen-rich organic fertilizer and a use method of the system. Comprising a condenser pipe, a composting reactor main body, a gas flowmeter and an aeration pump, the condensation pipe is communicated with the top of the composting reactor main body; the composting reactor main body is connected with the gas flow meter; the gas flow meter is connected with the aeration pump; the method is low in operation cost, good in ammonia emission reduction effect and suitable for large-scale application, and the nitrogen content in compost products can be remarkably increased.

The invention aims to disclose the low-protein type fattening pig feed which can effectively solve the technical problem that the growth performance is reduced due to insufficient protein supply of the existing low-protein daily ration to the fattening pigs by adopting the specific daily ration component proportion and combining with the specific nutritional index level, and the growth performance of the fattening pigs is improved by constructing a unique daily ration system. The feed effectively reduces the breeding cost, improves the profit margin of breeding enterprises, relieves the problem of protein resource shortage, can effectively reduce nitrogen emission and ammonia emission, improves the environmental quality of pig farms, has important significance for realizing sustainable development and environmental protection targets, and has wide application prospects. The application of the low-protein daily ration technology provided by the invention in the pig industry has wide development prospects and important strategic significance.

The present application belongs to the technical field of poultry and livestock breeding, and relates to a poultry and livestock breeding method for reducing ammonia emission; the method comprises the following steps: laying a three-layer composite bedding material composed of a biological activation layer, an acid-base buffer layer and a basic adsorption layer before poultry and livestock enter a house, and continuously and stably reducing ammonia emission through the synergistic effect of physical adsorption, chemical neutralization and biological degradation; daily feeding of special ammonia-reducing feed containing composite plant extract, polysaccharide enzyme preparation and urease inhibitor to reduce the excretion of nitrogen-containing substances in feces from the source; spraying of a composite ammonia-removing agent according to the ammonia concentration gradient in the house to achieve precise control; mixing of feces and bedding material after poultry and livestock defecate, and supplement of ammonia adsorbent, so that the old bedding material can be composted into organic fertilizer. The present application constructs a whole-chain ammonia emission reduction system of'source control-process blocking-end conversion', effectively realizes long-term and stable control of the ammonia concentration in the poultry house, and improves the breeding environment.

The present invention provides a marine fuel supply system and its ammonia BOG recovery and reuse system and method. The ammonia BOG recovery and reuse system includes a buffer tank, a BOG compressor, a BOG condenser, a gas-liquid separator, and a controller, all connected in sequence. The buffer tank is connected to the ammonia fuel tank and is used to store the ammonia BOG produced in the ammonia fuel tank. The BOG compressor is used to pressurize the ammonia BOG. The BOG condenser is used to perform heat exchange on the pressurized ammonia BOG to produce liquid ammonia containing ammonia BOG that meets the temperature requirements of the ammonia engine. The gas-liquid separator is used to separate the liquid ammonia containing ammonia BOG into gas and liquid, completing the conversion of the ammonia BOG and realizing the recovery and reuse of the ammonia BOG. This system effectively processes and reuses the ammonia BOG in the ammonia fuel tank, reduces the risk of structural rupture in the ship's cabin, increases fuel utilization, and reduces the hazards caused by direct ammonia emissions into the atmosphere.

The invention discloses an ammonia gas washing tower device for a ship. The ammonia gas washing tower device comprises a washing tower body, an ammonia gas water absorption tank, a first-stage gas uniform distributor, a first-stage spraying pipe network, a second-stage gas uniform distributor, a second-stage spraying pipe network, a ventilation device, a first spraying seawater valve, a second spraying seawater valve, an ammonia gas sensor, an exhaust control valve, a pressure sensor and an exhaust pipe. According to the marine ammonia gas washing tower device, the characteristic that ammonia is extremely easy to dissolve in water is utilized, and effective ammonia gas treatment and absorption are provided for a diesel / ammonia dual-fuel power ship; the ammonia gas treatment capacity is large, and ammonia gas generated in exhaust of a diesel / ammonia dual-fuel main engine and ammonia gas discharged by a safety valve of a liquid ammonia tank can be treated; a lower concentration value can be set by adjusting the concentration monitoring range of the ammonia gas sensor, so that the ammonia gas emission can be further controlled, and even the zero emission target of the ammonia gas can be realized; the mixed gas of ammonia gas and other gases can be treated, and other water-soluble gases are discharged into the atmosphere after being washed.

This document relates to a vent gas treatment system for ammonia-propelled vessels. The proposed vent gas treatment system includes a vent gas treatment facility configured to recover and treat ammonia discharged from an ammonia fuel consumer or an intermediate facility supplying ammonia fuel to the consumer; a wastewater tank for storing ammonia water discharged from the vent gas treatment facility; and gas piping for returning the ammonia gas generated in the tank back to the vent gas treatment facility. This system efficiently addresses not only the discharge of ammonia water but also the problem of ammonia gas in the tank storing the ammonia water.

This invention belongs to the field of exhaust gas monitoring technology and discloses a device and method for measuring ammonia emissions from an ammonia-hydrogen fuel cell engine. The device includes a high-efficiency filter and an engine. The high-efficiency filter is connected to an air heater. A first sampler is provided at the outlet of the air heater. The air heater and the engine are connected to a heating and mixing chamber. The heating and mixing chamber is connected to a dilution channel. The dilution channel is connected to a fan through a critical venturi tube. A sensor and a second sampler are provided in the dilution channel. The second sampler and the first sampler are connected to an analyzer. The analyzer and the sensor are connected to a computer. The method includes S1: connecting the measuring device; S2: preparation before measurement; S3: starting the measurement and acquiring parameters; S4: calculating the power-based emission factor of pollutants. This invention solves the problem of inaccurate measurement of ammonia emissions from engines in existing technologies and is applicable to exhaust gas measurement.

The invention relates to an acidifying agent for reducing ammonia emission through storage and fermentation of pig manure water and application of the acidifying agent. The acidifying agent is prepared from ardealite, ferrous sulfate and thermally activated natural starch according to the mass ratio of 3: 3: 4. The acidifying agent comprises the following elements in percentage by weight: 37.2% of C, 5.8% of H, 46.7% of O, 3.5% of Fe, 2.6% of P and 4.2% of S. According to the invention, the industrial waste phosphogypsum is subjected to resource utilization, so that resource waste is reduced; meanwhile, the acidifying agent takes inorganic acid as a crystal nucleus and a macromolecular organic carbon chain as a framework, a macromolecular organic-inorganic composite acidification system is built, after addition, the pH of a fermentation system can be rapidly reduced, the activity of microorganisms in the system is regulated and controlled, the synergistic effect of the acidifying agent and microbial acidification is achieved, the acidification efficiency is improved, and the acidifying effect is improved. The low pH can be effectively kept for a long time, and rapid and continuous storage, fermentation and acidification of the pig manure water are achieved.

This invention relates to a flexible ammonia sensor, its preparation method, and its application. The preparation method includes: S1: reacting Ti3C2T... x Calcination yields TiO2@Ti3C2T x S2: Apply TiO2@Ti3C2T x A first mixed solution is prepared by mixing aniline monomer with HCl; a second mixed solution is prepared by mixing aniline monomer with HCl; and a third mixed solution is prepared by mixing ammonium persulfate with HCl. S3: A polyimide film is immersed in the first mixed solution, and the third mixed solution is added to the second mixed solution to prepare a fourth mixed solution. S4: The fourth mixed solution is added to the first mixed solution to react and obtain a flexible ammonia sensor. The flexible ammonia sensor is prepared using the above method. The application is in real-time monitoring of ammonia emissions from high-humidity agricultural soils. The flexible ammonia sensor of this invention has high sensitivity at room temperature and excellent resistance to moisture interference and mechanical bending resistance.