395 results about "Oxidation response" patented technology

The invention discloses a non-specific peroxygenase mutant and application thereof and a preparation method of 25-hydroxyvitamin D3, and particularly relates to a protein obtained by taking an amino acid sequence as shown in SEQ ID NO.1 as a starting sequence and mutating amino acid residues as shown in the 20th site and / or the 25th site and / or the 57th site. The catalyst has relatively high catalytic activity and stereocatalysis specific selectivity; according to the method, acetone, vitamin D3, hydrogen peroxide and a non-specific peroxygenase mutant are respectively added into a potassium phosphate buffer solution with the pH value of 7.0-8.0 to form a reaction mixed solution, an oxidation reaction is carried out for 10-50 hours at the temperature of 25-35 DEG C, the 25-hydroxyvitamin D3 is generated, the reaction condition is mild, the reaction operation is simple and convenient, the conversion rate is high, the cost is low, the preparation efficiency of the 25-hydroxyvitamin D3 is greatly improved, and the method is suitable for industrial production. Good industrial application prospects are realized.

The invention relates to the technical field of industrial wastewater treatment, in particular to a heterogeneous catalytic oxidation process and system for treating organic wastewater. The heterogeneous catalytic oxidation system for treating the organic wastewater comprises an acid adjusting unit, a booster pump, a catalytic oxidation reaction unit and a pH callback pipeline mixer which are communicated in sequence, the catalytic oxidation reaction unit comprises a plurality of heterogeneous catalytic oxidation reactors which are connected in series, and the treatment temperatures and the treatment pressures of the heterogeneous catalytic oxidation reactors are sequentially reduced along the flowing direction of wastewater. The heterogeneous catalytic oxidation reactors connected in series in the system provided by the invention do not need to be pressurized step by step, are simple and efficient, and have feasibility. The heterogeneous catalytic oxidation reactors are adopted, so that the loss of the catalyst can be avoided, the continuous addition of the catalyst is not needed, the operation cost is reduced, meanwhile, the function of configuring different catalysts in each stage of heterogeneous catalytic oxidation reactor can be realized, and the degradation degree of organic matters and the precise regulation and control of each stage of target products are realized.

The invention relates to the field of preparation of 2-alkyl anthracene, and discloses a method for optimizing a 2-alkyl anthracene oxidation process based on a feeding mode, which comprises the following steps: adding a solution containing 2-alkyl anthracene and a catalyst into an oxidation reactor through feeding, and reacting in an oxygen-deficient environment to obtain a mixture containing 2-alkyl anthraquinone, and the feeding mode is continuous feeding. The concentration of 2-alkyl anthracene in the oxidation reactor can be controlled through the feeding rate by selecting a continuous feeding mode; the concentration of the 2-alkylanthracene in the oxidation reactor of the continuous feeding process is low, so that the conversion rate of the 2-alkylanthracene and the selectivity of the 2-alkylanthraquinone are remarkably improved, the content of tail oxygen is controlled within a safe range, and the economic benefit and the safety performance are increased.

The invention belongs to the field of compositions of biomedical materials and high-molecular compounds, and provides hydrogel capable of regulating and controlling the redox steady state of a microenvironment as well as a preparation method and application of the hydrogel. A macromolecular network of the hydrogel capable of regulating and controlling the redox steady state of the microenvironment is formed by catechol modified hyaluronic acid, carboxylated chitosan, oxidized dextran and iron ions through a hybridization cross-linking reaction; under physiological conditions, catechol groups in the hydrogel can be subjected to an autoxidation reaction to generate H2O2, and meanwhile, iron ions coordinated on the catechol groups in the hydrogel can catalytically decompose H2O2 into water and oxygen, so that the level of active oxygen in a microenvironment is adjusted. The hydrogel disclosed by the invention can realize bidirectional regulation and control on active oxygen in a pathological microenvironment after myocardial infarction, so that the redox steady state of the pathological microenvironment after myocardial infarction is maintained, and the regeneration and repair capacity of an existing hydrogel material with antioxidant capacity on myocardial tissues after myocardial infarction is improved.

The invention discloses a zero discharge process for electroplating wastewater membrane separation, and relates to the field of wastewater discharge, and the zero discharge process comprises the following operation steps: S1, setting up discharge equipment; s2, carrying out micro-electrolysis reaction; s3, advanced oxidation reaction; s4, filtering treatment; s5, membrane treatment: the pretreated electroplating wastewater enters a first-stage RO device, effluent of the first-stage RO device enters a second-stage RO device, salt and organic matter solution intercepted by a first-stage RO membrane is discharged as concentrated water of the membrane, enters a concentrated water RO membrane device and is further filtered in the concentrated water RO membrane device, effluent of the concentrated water RO membrane is recycled, and concentrated water enters the concentrated water RO membrane device and is filtered again; and S6, carrying out evaporation treatment. According to the zero-discharge process for electroplating wastewater membrane separation, when electroplating wastewater is discharged, the dosage of chemicals such as coagulant can be reduced, organic matters in water can be removed by utilizing a chemical oxidation method, and meanwhile, the method is high in water recovery rate, stable in water quality and small in concentrated water generation amount.

The invention belongs to the technical field of environment-friendly treatment of high-concentration organic wastewater, and particularly relates to a wet catalytic oxidation treatment process for high-concentration organic wastewater. Wastewater in the wet catalytic oxidation treatment process for the high-concentration organic wastewater is formed by combining a plurality of streams of wastewater. In order to ensure the safety of the wet oxidation process, the combined wastewater is firstly subjected to steam stripping pretreatment to remove light component organic matters therein, then is pressurized and heated, enters a wet oxidation reaction section to remove most of COD therein, is cooled and depressurized after the reaction is finished, and is fed into the existing multi-effect evaporation section; the multi-effect evaporation concentrated solution is returned to the wet oxidation section to continuously remove organic matters, and condensate water enters a subsequent biochemical treatment section. The wet catalytic oxidation treatment process for the high-concentration organic wastewater is wide in application range, high in treatment efficiency, high in oxidation speed and low in secondary pollution.

The invention discloses a sludge carbon loaded Schwertmannite immobilized iron-sulfur reducing bacteria composite material as well as a preparation method and application thereof. The method comprises the following steps: performing high-temperature pyrolysis on sludge to obtain sludge carbon; mixing the sludge carbon with a ferrous sulfate solution, then adding a hydrogen peroxide solution to carry out oxidation reaction, and carrying out solid-liquid separation to obtain a sludge carbon loaded Schwertmannite material; and adding the sludge carbon-loaded Schwertmannite material into a culture medium containing iron-sulfur reducing bacteria, carrying out bacterial culture until the culture medium is black, and carrying out solid-liquid separation to obtain the sludge carbon-loaded Schwertmannite material. The obtained mineral microorganism composite material is excellent in adsorption performance, large in adsorption capacity and high in stability, can efficiently remove heavy metal ions such as Sb (V), Cd (II) and Pb (II), and is particularly suitable for repairing heavy metal pollution in mining areas.

The invention relates to the technical field of wastewater treatment, in particular to a catalytic reduction-oxidation reaction system and a wastewater treatment method, and the catalytic reduction-oxidation reaction system is used for treating wastewater. Comprising a water inlet unit, a pH stabilizing unit, a catalytic reduction reaction unit, a Fenton oxidation reaction unit, an aeration stripping unit, a neutralization unit, a coagulating sedimentation unit and an intelligent control system which are connected in sequence, the catalytic reduction reaction unit comprises a catalytic reduction reactor, a filter plate and a reaction layer are arranged in the catalytic reduction reactor, a supporting layer is laid on the filter plate, and the reaction layer is arranged on the supporting layer. The reaction layer is arranged on the filter plate through the supporting layer; the Fenton oxidation reaction unit comprises a Fenton oxidation reactor, the Fenton oxidation reactor comprises a reactor body, and a first rotary mixing aeration disc is arranged at the bottom in the Fenton oxidation reactor. By implementing the application, high-efficiency, stable, low-consumption and intelligent operation of wastewater treatment can be realized.

The invention discloses a wastewater treatment method based on improved wet oxidation reaction, which comprises the following steps: step 1, carrying out tempering modification treatment on wastewater, and preheating by adopting a multi-stage heat exchanger; 2, introducing the preheated wastewater and an oxidizing agent into a wet oxidation tower filled with a solid catalyst, and gradually heating to a required reaction temperature to carry out a wet oxidation reaction; 3, carrying out gas-liquid separation on a gas-liquid mixture flowing out of the wet oxidation tower, feeding the separated gas phase and liquid phase into the multi-stage heat exchanger in the step 1, carrying out heat exchange with the wastewater in the step 1, and preheating the wastewater to raise the temperature; and step 4, separating the cooled gas phase and liquid phase again, feeding the separated gas phase into the wastewater in the step 1 to carry out tempering modification on the wastewater, and further carrying out deep treatment or discharging the separated liquid phase. The method can effectively degrade organic pollutants in wastewater, and is low in energy consumption and operation cost and stable in process operation.

The invention discloses a preparation method and application of a platinum-copper cross-linked nanowire, and the method comprises the following steps: preparing a platinum precursor solution and a copper precursor solution, injecting into an aqueous solution, and uniformly mixing; taking a freshly prepared sodium borohydride aqueous solution as a reducing agent and a hydrogen source, quickly injecting into the mixed solution, reacting in a low-temperature water bath for several hours, collecting black precipitates at the bottom of a reaction container, and centrifugally washing with a water-alcohol mixture to obtain the platinum-copper cross-linked nanowire. The scheme is carried out in an aqueous solution without a surfactant, the surface of the prepared nanowire is clean, the post-treatment is simple, and the diameter of the prepared platinum-copper cross-linked nanowire can be 4-5nm; the platinum-copper cross-linked nanowire can be applied to electro-catalysis methanol oxidation reaction, and has high activity, good carbon monoxide poisoning resistance and good stability.

The invention relates to a microfluidic reactor for electrocatalytic determination of chemical oxygen demand, and belongs to the field of environmental monitoring. In the reactor, to-be-detected samples are injected from a sample inlet positioned at the front end of a liquid inlet and flow into the reactor formed by stacking three layers of components from the liquid inlet below along with electrolyte, and the to-be-detected samples positioned at different horizontal heights turn along with liquid flow and finally reach the surface of a planar anode at the bottom under the action of a pinch plate distributed with a micro cone group; and the water flows upwards through a hole in one end of the top side of the buckle plate, passes through the auxiliary electrode with the hole and finally flows out of the electrolytic tank through a water outlet in the top. Organic matters in the to-be-detected sample are subjected to electrochemical oxidation reaction under the action of the catalyst on the surface of the planar anode at the bottom of the reactor, and a generated electric signal is used for quantitatively determining the chemical oxygen demand of the to-be-detected water sample. In the invention, the pinch plate distributed with the micro cone group can strengthen organic matters to break through stable horizontal laminar mass transfer, so that the organic matters in the sample to be detected fully reach the surface of the plane anode to generate electrochemical oxidation reaction, thereby improving electric signals and lower limit of detection. According to the characteristics, a more stable and accurate electric signal can be obtained when the reactor is used for measuring the chemical oxygen demand, and the linear range of the measurement is widened, so that the efficient and accurate measurement of the chemical oxygen demand in a sample to be measured is realized.

The invention discloses a gas-liquid reaction system. The gas-liquid reaction system comprises a wastewater pool, an ozone generator, an oxidation reaction tank and a first micro-interface generator located in the oxidation reaction tank. An inlet of the first micro-interface generator is communicated with the wastewater pool and the ozone generator, and an outlet of the first micro-interface generator is communicated with the inside of the oxidation reaction tank. Therefore, wastewater in the wastewater pool and ozone produced by the ozone generator can be simultaneously conveyed to the first micro-interface generator, the wastewater and the ozone oppositely run in the first micro-interface generator to crush and disperse the ozone into micron-sized ozone micro-bubbles, and the mass transfer area between the ozone micro-bubbles and the wastewater in the oxidation reaction tank can be increased by the ozone micro-bubbles; the oxidation reaction between the ozone and the wastewater is promoted, so that the utilization rate of the ozone is improved. As the oxidation reaction tank is communicated with the wastewater pool, unreacted ozone in the oxidation reaction tank can be conveyed into the wastewater pool to oxidize wastewater, so that the unreacted ozone is fully utilized, and zero emission of ozone is realized.

The invention discloses an ergothioneine composition with an anti-aging function, and relates to the field of health-care foods, and the composition has the effects of resisting aging and cell molecule oxidation reaction. The composition disclosed by the invention is prepared from the following composition components: ergothioneine (0.162 to 0.185), a wheat germ extract (0.063 to 0.085), coenzyme Q10 (0.042 to 0.063), quercetin (0.35 to 0.55), a turmeric extract (0.032 to 0.054), a black pepper extract (0.003 to 0.006) and aminobutyric acid (0.205 to 0.227). The composition is used for assisting body functions in eliminating lipid, protein, DNA (deoxyribonucleic acid) and the like in cells damaged by oxidative stress in a body. The composition is prepared into equivalent particles by fully and physically stirring and uniformly mixing, is convenient for human body to absorb, and can remarkably improve the antioxidant capacity and delay the aging process after being taken for a long time. The composition not only can effectively resist oxidative stress disoperation, but also can promote cell repair. The raw materials of the composition can be purchased in the market, and the composition is high in production benefit and beneficial to wide application.

The utility model relates to a steam stripping oxidation tank suitable for removing organic matters in high-salt organic wastewater, and belongs to the technical field of environmental protection equipment. A steam stripping oxidation tank body is composed of a cylinder body, an upper sealing head and a lower sealing head, the interior of the upper sealing head is a steam stripping area after demisting and defoaming, the interior of the cylinder body is a steam stripping, adsorption and oxidation reaction area, organic matter removal of high-salinity organic wastewater is achieved in the area, and the interior of the lower sealing head is a temporary storage area of the high-salinity wastewater after organic matter removal. The device disclosed by the utility model is simple in structure, is integrally of a detachable structure, is convenient to inspect and maintain, and realizes high-efficiency removal of organic pollutants in high-salt organic wastewater by an integrated process of oxidation, adsorption and steam stripping technologies.

The invention provides a nano enzyme, a preparation method and application thereof, and a glucose concentration detection method. The Ru / Co-N and Zn-CNCs nano-material is prepared by adopting a calcination method and a reduction method, the material can quickly catalyze the oxidation reaction of TMB in the presence of hydrogen peroxide, the cascade reaction colorimetric sensor for glucose detection is successfully constructed by combining with glucose oxidase, and the preparation method is simple and convenient to operate, economical and efficient; due to the synergistic effect generated by doping of Ru metal, the nano-enzyme has better catalytic activity, meanwhile, through combination with glucose oxidase, the system can achieve ultra-sensitive colorimetric detection of glucose, excellent stability and linear response characteristics are shown, and the detection accuracy is further improved. Through colorimetric detection, the method can sensitively detect glucose in a range of 10-2000 [mu] M, and the detection limit is as low as 0.61 [mu] M.

The invention discloses an oxidation reaction device for an isotope analysis system, and belongs to the technical field of carbon isotope analysis systems.The gas inlet end of the oxidation reaction device is communicated with a gas chromatography, and the gas outlet end of the oxidation reaction device is communicated with an isotope ratio mass spectrometry. A gas inlet end of the heating furnace is communicated with a gas outlet of the gas chromatography, and a gas outlet end of the heating furnace is communicated with the isotope ratio mass spectrum; the oxidizing agent spraying structure is at least partially arranged at the upper end of the inner cavity so as to uniformly spray an oxidizing agent into the inner cavity; the oxidizing agent circulating structure is communicated with the oxidizing agent spraying structure through a first pipeline, and the oxidizing agent circulating structure conveys the oxidizing agent sprayed by the oxidizing agent spraying structure and collected at the bottom of the inner cavity to the oxidizing agent spraying structure again, so that repeated utilization of the oxidizing agent is achieved. According to the invention, by arranging the oxidant spraying structure, an oxidant is uniformly scattered in the heating furnace, so that the oxidation reaction is more sufficient, and the oxidation effect is enhanced.

The invention provides a method for reducing CH4 emission of a constructed wetland, the constructed wetland and a construction method of the constructed wetland, and particularly relates to the technical field of environmental protection. The method for reducing the CH4 emission of the constructed wetland comprises the following steps: doping biochar-loaded nano zero-valent iron into an upper-layer matrix of the constructed wetland; the doping amount of the charcoal-loaded nano zero-valent iron is 0.5-2% of the mass of the upper-layer substrate. According to the method, the concentration of soluble organic carbon (DOC) in the constructed wetland is improved by controlling the content of the biochar-loaded nano zero-valent iron, so that the diversity of CH4 oxidizing bacteria and the relative abundance of Guangmethylotrophicus are improved, the CH4 oxidation reaction is promoted, and finally the emission reduction of CH4 is realized. According to the data of the embodiment, the average discharge flux of CH4 of the constructed wetland prepared by the invention is 0.22-0.35 mg.C / m < 2 > / h, and is reduced by 35.6-59.8% compared with the contrast.

The invention belongs to the field of municipal water purification engineering, and provides a grid flocculation reaction tank with an electric flocculation function, which comprises a tank body, an anode plate and a cathode plate, a first hole and a second hole are formed in the side wall of the tank body; the anode plate is arranged in the tank body, the outer edge of the anode plate abuts against the inner wall of the tank body, and meshes are formed in the anode plate; the cathode plate is arranged in the pool body, the outer edge of the cathode plate abuts against the inner wall of the pool body, meshes are formed in the cathode plate, the anode plate and the cathode plate are arranged in parallel at intervals to jointly form a flocculation structure, and the first hole and the second hole are located in the upper side and the lower side of the flocculation structure respectively. In the reaction tank, the anode plates can be subjected to oxidation reaction to generate metal ions, metal hydroxides and polyhydroxy complexes are generated through hydrolysis and polymerization, and the metal hydroxides and the polyhydroxy complexes can be quickly subjected to flocculation reaction with raw water. Under the condition that a flocculant is not added or a small amount of flocculant is added, a flocculation function is realized through an electric flocculation reaction, so that medicaments can be saved, the flocculation effect can be enhanced, and the treatment efficiency of turbidity and algae in a water body is greatly improved.

The invention discloses an organic wastewater advanced treatment method and device with low agent input. The method comprises the following steps: an anaerobic biological iron-sulfur reduction reaction process: fully mixing elemental sulfur, ferric iron, iron-sulfur reduction sludge and wastewater containing organic carbon and organic pollutants with electronegative groups, carrying out anaerobic biological elemental sulfur reduction and iron reduction reactions, and directionally generating polysulfide and ferrous sulfide in situ; a nucleophilic substitution reaction process: carrying out nucleophilic substitution reaction on the organic pollutants with the electronegative groups and the polysulfide, and removing the electronegative groups to generate a reduced organic product; in the oxidation reaction process, ferrous sulfide reacts with dissolved oxygen to generate hydroxyl free radicals, the reduction state organic product is oxidized and degraded, and elemental sulfur and ferric iron are generated; and a sludge precipitation process: refluxing the precipitate to the anaerobic biological iron-sulfur reduction reaction zone, and discharging clarified water. The method provided by the invention realizes deep degradation and detoxification of refractory organic pollutants, and has the advantages of low agent investment, low cost and no secondary pollution.

The utility model belongs to the field of gas pollution treatment equipment, and particularly relates to a device for treating VOC (volatile organic compound) and PM2.5 (particulate matter 2.5) through superposition oxidation, which comprises a shell provided with a gas inlet and a gas outlet, a negative electrode assembly and a positive electrode assembly which are arranged in pairs are arranged in the shell, a discharge structure is arranged on the negative electrode assembly, and a discharge structure is arranged on the positive electrode assembly. And the discharge structure is arranged towards the positive electrode assembly. According to the utility model, the negative electrode assembly discharges towards the positive electrode assembly to form an electric field and generate the electron jet flow, organic gas molecules and particulate matters in gas are bombarded into an ionic state through the electron jet flow and are subjected to oxidation reaction with oxygen in the air, and finally carbon dioxide and water are formed, so that the purpose of green pollution treatment is achieved.

The invention discloses a method for improving the dewatering performance of aerobic granular sludge by combining physical and chemical methods, aiming at the special dense structure of the aerobic granular sludge, the structure of an extracellular polymeric substance is destroyed by adopting a physical crushing mode, and then the sludge is conditioned by adopting an advanced oxidation reaction, so that the dewatering performance of the aerobic granular sludge is improved. And finally dewatering the aerobic granular sludge in a centrifugal dewatering manner. Compared with unpretreated aerobic granular sludge, the method has the advantages that the moisture content is reduced by 6-10%, the dewatering performance of the aerobic granular sludge can be effectively improved, and a new idea and reference are provided for subsequent treatment of the aerobic granular sludge.

The invention discloses a seawater chemical oxygen demand determination method based on bias voltage photoelectric oxidation, and relates to the technical field of water quality monitoring. The method comprises the following steps: collecting seawater and performing pretreatment to obtain a seawater sample; adding supporting electrolyte into the seawater sample to obtain an electrolytic water sample; the method comprises the following steps: injecting an electrolysis water sample into a photoelectrochemical reaction tank, applying bias voltage to a working electrode by taking Ag / AgCl as a reference electrode, and turning on a light source with a specific wavelength for irradiation; carrying out an oxidation reaction in the photoelectrochemical reaction tank, and after the oxidation reaction of the organic matter is complete, obtaining a steady-state photocurrent with a stable current signal; according to a preset steady-state light current-COD concentration curve, a COD measured value is obtained, the COD standard concentration value is corrected according to the water temperature and the salinity, and a COD corrected value is obtained. An adjustable tiny external bias voltage is introduced to cooperate with light source irradiation, so that rapid, accurate and high-anti-interference measurement of COD in seawater is realized.

The invention relates to a phosphorus-doped spinel oxide, a preparation method and application of the phosphorus-doped spinel oxide in a glucose oxidation reaction, and belongs to the technical field of electrolytic catalytic materials. According to the invention, a P-NiMoO4 / NF self-supporting electrode is prepared by using P-doped NiMoO4 (beta) on Ni foam (NF). The structure of NiMoO4 is stabilized, the density state of active site Ni atoms close to Fermi level (EF) and the activity near oxygen vacancy (V0) are increased, the oxidation potential and the low detection limit are reduced, and the sensitivity and the linear detection range of glucose are increased.

The invention provides a livestock oxidative stress reaction prediction method and system, and the method comprises the steps: obtaining a real-time physiological monitoring data set with a timestamp mark of a livestock group, carrying out the feature extraction of the real-time physiological monitoring data set, and obtaining a target physiological index feature reflecting an oxidative stress state, the target physiological indexes comprise metabolic activity characteristics, oxidation product accumulation characteristics and anti-oxidation response characteristics. Calling a pre-training model to carry out time sequence correlation analysis on the target physiological index features, and generating an oxidative stress state prediction sequence; and determining a target individual with oxidative stress reaction and reaction development stage information according to the prediction sequence, and finally generating an oxidative stress reaction prediction result for the target individual. Therefore, the oxidative stress reaction of the livestock and poultry can be accurately predicted in real time.

The invention provides an up-to-standard treatment method for wastewater containing ammonia nitrogen and difficult-to-treat copper-cyanogen, and belongs to the field of wastewater treatment.The wastewater enters a first-stage oxidation reactor at first, the stable structure of a copper-cyanogen complex is destroyed by adding an oxidizing agent, then a copper removal agent and a pH adjusting agent are added into a copper removal reactor, copper ions are precipitated and separated out, and then the wastewater enters a second-stage oxidation reactor; the method comprises the following steps: carrying out oxidation and solid-liquid separation to remove copper sludge, carrying out oxidation and solid-liquid separation on treated overflow liquid and press filtrate after convergence so as to thoroughly remove residual cyanide and organic matters, and finally, conveying purified liquid which is subjected to two-stage oxidation and is subjected to copper cyanide interference removal to a biological reaction system to carry out biochemical reaction. And finally, the effluent reaches the recycling or discharging standard. The method effectively solves the problem of toxicity inhibition of difficult-to-treat wastewater on a biochemical system, realizes step-by-step removal and resource utilization of toxic and harmful substances, ensures stable and up-to-standard reuse or discharge of effluent, and has the advantages of efficient treatment, economy, environmental protection and convenient operation.

The invention discloses a sulfur-carbon integrated removal system and method, and belongs to the field of electrochemistry, the sulfur-carbon integrated removal system driven by proton circulation is constructed by competitively replacing anode electrochemical SO2 oxidation reaction through an organic matter electric coupling agent and combining electrochemical carbon dioxide reduction, and the system is used for deeply recovering low-grade SO2 oxidation reaction energy; cO2 electrochemical reduction is realized, and the electrolysis energy consumption in the whole process is reduced. According to the method, separation of SO2 chemical oxidation reaction and CO2 electrochemical reduction reaction in time and space is completed in principle in a spatial decoupling mode, the problem of CO2 catalyst poisoning caused by SO2 entering an electrochemical system is avoided, extra consumption of a electrochemical coupling agent is not needed, stable separation of sulfuric acid with lower cost and higher efficiency is facilitated, and the method is suitable for industrial production. And the design field of fossil energy clean utilization devices in the future is facilitated.

The present invention proposes a water treatment system that couples anoxic biofilters with artificial wetlands, belonging to the field of water treatment technology. The key technical points are: sewage is collected through a pipe network and flows into a water collection pool, and then enters a regulating / anoxic pool through a lift pump. The solid carbon source in the pool provides a carrier for microorganisms while achieving slow-release supplementation of the carbon source, thereby strengthening the denitrification reaction to remove total nitrogen. The system is then transported to a biofilter and a contact oxidation pool by a lift pump, and COD and ammonia nitrogen are removed through carbon oxidation and nitrification reactions. The effluent enters a high-efficiency clarifier, and after most of the total phosphorus and SS are removed through chemical phosphorus removal and coagulation and sedimentation, the overflow enters an artificial wetland, and is subjected to a comprehensive treatment of plant-microorganism-filler to deeply purify the pollutants and meet the discharge standards. Using the water treatment method of the present application, the effluent water quality can be improved to the Class B emission standard.

The invention discloses a method for preparing epsilon-caprolactone by a peroxy acid oxidation method, and relates to the field of organic chemical synthesis. The method specifically comprises the following steps: preparation of peroxy acid, Baeyer-Villiger oxidation reaction of peroxy acid and cyclohexanone, and separation and purification of a product. Peroxy acid generated by organic acid and hydrogen peroxide is used as an oxidizing agent, and a metering pump is adopted to accurately control the raw material proportion. The method has the advantages of simplicity and convenience in operation, mild reaction conditions and high yield, and is suitable for industrial production.

The invention provides a lepidolite flotation wastewater treatment device and a flotation process, and relates to the technical field of wastewater treatment, the lepidolite flotation wastewater treatment device comprises an oxidation reaction tank, a multi-point feeding mechanism and a swing mechanism; the multi-point feeding mechanism comprises a mounting plate, a liquid outlet pipe and a two-way threaded screw rod, the two sides of the mounting plate are fixedly connected with the inner wall of the oxidation reaction tank, a sliding rail is fixedly arranged at the top of the mounting plate, and a moving seat is slidably connected to the surface of the sliding rail. According to the scheme, when the amidoxime lepidolite-containing flotation wastewater is treated, ferrous sulfate and hydrogen peroxide are added into the flotation wastewater, so that oximido and amino of amidoxime are destroyed, complexed heavy metals are released, macromolecular organic matters are degraded, the heavy metals are ensured to be completely free, and the heavy metals in effluent are prevented from exceeding the standard; in addition, the hydrogen peroxide is gradually added in a multi-point mode, bumping caused by local over-concentration is avoided, inner side spraying is adopted during spraying, and bumping of the liquid level due to the fact that the hydrogen peroxide is directly sprayed downwards and settles to the bottom of the pool under the action of gravity is avoided.

The oxidation reaction device comprises a reaction kettle, a stirring mechanism, a paddling mechanism and an oscillating mechanism which are used for homogenizing reaction materials are arranged in the reaction kettle, and a driving mechanism is arranged on the reaction kettle; the stirring mechanism comprises an impeller and a plurality of stirring blades, the paddling mechanism comprises a plurality of blades, the driving mechanism is used for driving the impeller and the stirring blades to rotate and drive the blades to swing, the impeller and the stirring blades stir reaction materials through self rotation, and the blades push the reaction materials to flow circularly through self swing. The oscillating mechanism comprises a plurality of elastic pieces arranged on the oscillating path of the blades, and the blades generate vibration by shifting the elastic pieces so as to oscillate the reaction materials. When the reaction kettle is used for oxidation reaction, materials can be fully and effectively homogenized and dispersed by stirring, stirring and vibrating the materials, so that a reaction substrate, an oxidizing agent and a catalyst are fully contacted, and the product conversion rate and yield brought by the reaction are higher.