119 results about "Catalytic ozonation" patented technology

The invention discloses a system and a method for classified sewage treatment, and belongs to the technical field of environmental engineering and water treatment. The system comprises the following components: an intelligent water quality detection module, which is used for real-time and accurate monitoring of COD, BOD, ammonia nitrogen, total phosphorus, suspended matter concentration and heavy metal content; the sectional bioreactor realizes deep removal of nitrogen and phosphorus and efficient biological treatment by flexibly adjusting reaction conditions of each section; the intelligent flocculation control module is used for automatically and accurately adjusting the adding amount of a flocculating agent, and is combined with integrated operation of efficient inclined tube precipitation and sludge concentration, so that the water quality of discharged water is stable, and the medicament consumption is reduced; the ultrafiltration membrane bioreactor effectively removes residual suspended matters and colloids, and ensures that the effluent stably reaches the standard for a long time through the synergistic effect of catalytic ozonation; and the sludge treatment module is used for realizing collaborative optimization management of sludge reduction, recycling and energy recycling.

The invention provides a tandem catalytic ozonation sewage treatment system, and relates to the technical field of sewage treatment. The device comprises a treatment assembly, an aeration assembly, a middle assembly, an injection assembly, a lifting assembly, a knocking assembly and an extrusion assembly, the treatment assembly comprises a lower shell, the upper part of the lower shell is detachably connected with an upper shell, the lower part of the upper shell is fixedly connected with a partition plate, the lower shell is provided with a sewage pipeline, and the upper part of the lower shell is fixedly connected with the partition plate. A barometer is mounted at the upper part of the lower shell; the aeration assembly is arranged at the bottom of the lower shell and is used for injecting ozone gas; the middle assembly is arranged on the outer side of the treatment assembly and is used for temporarily storing the high-pressure ozone. By arranging the lifting assembly and the knocking assembly, the knocking assembly can be driven by ozone pressure to knock the aeration disc, so that impurities attached to the aeration disc are vibrated away and taken away by ozone gas, and the aeration disc is prevented from being blocked due to impurity accumulation.

The invention provides a nanofiltration concentrated water treatment method and system.The treatment method comprises the steps that nanofiltration concentrated water is conveyed to a catalytic ozonation tower provided with a modified biochar catalyst to be subjected to catalytic ozonation treatment, and primary treatment liquid is obtained; and carrying out biochemical treatment on the primary treatment liquid to obtain a secondary treatment liquid. According to the nanofiltration concentrated water treatment method and system provided by the invention, the nanofiltration concentrated water is subjected to catalytic ozonation treatment, so that pollutants such as soluble organic matters, ammonia nitrogen and perfluoroalkyl compounds in the nanofiltration concentrated water can be effectively decomposed, the organic load in the nanofiltration concentrated water is reduced, and the biodegradability of the nanofiltration concentrated water is improved; and a good foundation is laid for relieving the burden of subsequent biochemical treatment and improving the treatment efficiency of the nanofiltration concentrated water. The nanofiltration concentrated water is subjected to biochemical treatment, and pollutants in the nanofiltration concentrated water can be further removed, so that the environmental pollution can be reduced, and the recycling of resources is facilitated.

The invention belongs to the technical field of wastewater treatment, and particularly relates to a catalytic filler, a preparation method and application of the catalytic filler to treatment of organic matters in high-salinity wastewater through electrochemistry and ozone. Wherein the catalytic filler is prepared from the following components in percentage by mass: 5-10% of a carbon-coated high-entropy perovskite composite material, 10-15% of a binder and the balance of a carbon-based carrier; the carbon-coated high-entropy perovskite composite material is formed by compounding lanthanide series high-entropy perovskite oxide and carbon microspheres. The invention also provides a method for treating organic matters in high-salinity wastewater by using the catalytic filler through electrochemistry in cooperation with ozone. The electrochemical reaction and the ozone reaction are combined, a conductive three-dimensional electrode network is constructed by utilizing the catalytic filler, the cathode plate and the anode plate, the synergistic effect of the electrochemical reduction reaction and the catalytic ozonation in the oxidation process is promoted, the degradation of intractable pollutants by the ozone under the assistance of electrochemistry is realized, and intractable organic pollutant molecules are better decomposed.

The invention discloses an efficient treatment process for salt-containing industrial wastewater, and relates to the technical field of wastewater treatment. Salt-containing industrial wastewater sequentially passes through an adjusting tank, a silicon and hardness removal unit, a biochemical unit, a secondary sedimentation tank, a fluorine removal unit, a filter unit, a catalytic ozonation unit, a moving bed bio-membrane reactor treatment unit, a powder carbon sedimentation unit and an ultrafiltration-reverse osmosis double-membrane unit to be treated, produced water is recycled, and concentrated water enters an evaporation and concentration unit; the silicon removal and hardness removal unit is used for treating the wastewater by adding a flocculating agent and a composite coagulant aid; the flocculating agent is a chitosan-based flocculating agent, and the addition amount of the flocculating agent is 10 to 20 mg / L; the composite coagulant aid is composed of a magnesium-aluminum hydrotalcite coagulant aid and alginic acid-silicate hybrid microgel according to the mass ratio of 2: (1-4), and the addition amount of the composite coagulant aid is 5-15 mg / L. The treatment effect of the salt-containing industrial wastewater is remarkably improved.

The preparation method comprises the following steps: placing Al2O3 particles in an alkaline solution for pretreatment, mixing the pretreated Al2O3 particles with a precursor solution containing an iron salt, a manganese salt, a nickel salt and a carbon source, stirring, standing, filtering, drying to obtain precursor-loaded Al2O3 particles, and calcining the precursor-loaded Al2O3 particles to obtain the catalyst. And washing and drying to obtain the supported catalyst. The supported catalyst prepared by the invention has the advantages of strong catalytic activity, high catalytic efficiency, stable structure and the like, is a core-multi-shell structure catalyst with excellent performance, and can realize efficient degradation and removal of organic pollutants in a short time when being used for catalyzing ozonation and treating organic polluted wastewater; good economic benefits and application prospects are realized. The preparation method has the advantages of simplicity and convenience in operation, simple process, low cost, greenness, no pollution and the like, is suitable for large-scale preparation and is beneficial to industrial application.

The invention relates to the field of sewage treatment, and discloses a sewage treatment method based on desulfurization and denitrification, which comprises the following steps: S1, magnetic flocculation-electro-catalysis pretreatment: adding a polyaluminum chloride-magnetic powder composite flocculant into sewage through a magnetic flocculation reactor to form a magnetic floc, removing suspended matters through a permanent magnetic separation device, and then entering an electro-catalysis oxidation pond, carrying out electrolysis by taking titanium-based lead dioxide as an anode and active carbon fiber as a cathode; and S2, performing synchronous desulfurization and denitrification on the three-dimensional electrode fluidized bed, feeding pretreated effluent into a three-dimensional electrode fluidized bed reactor, filling activated carbon particles as a third electrode, and adding a composite flora of thiobacillus and denitrifying bacteria. The efficient removal of sulfides, total nitrogen, total phosphorus and chemical oxygen demand in the sewage is realized through a multi-stage synergistic process of magnetic flocculation-electrocatalysis pretreatment, synchronous desulfurization and denitrification of a three-dimensional electrode fluidized bed, deep denitrification and dephosphorization of a denitrification filter tank and catalytic ozonation-membrane separation combined deep treatment.

The utility model discloses a high-salt organic wastewater ozone catalytic oxidation system, and particularly relates to the technical field of wastewater treatment.The high-salt organic wastewater ozone catalytic oxidation system comprises an ozone generator and an ozone oxidation pond assembled on one side of the ozone generator, an ozone concentration monitor is installed on one side of a rotor flow meter, and one side of the ozone concentration monitor is connected with a three-way pipe; an air pump is connected to the rear end of the three-way pipe, a filtering mechanism is mounted on one side of the three-way pipe, a first electromagnetic valve is mounted at the joint of the three-way pipe, the ozone concentration monitor and the filtering mechanism, and a first aeration pipe and a second aeration pipe which are staggered with each other are connected to one side of the air pump through shunt pipes respectively. According to the utility model, the first electromagnetic valve is mounted, so that gas conveyed by the gas pump can be controlled according to treatment requirements by controlling the first electromagnetic valve during use, and the aeration treatment effect is improved; wastewater at different positions in the ozone oxidation pond can be treated by utilizing the first aeration pipe and the second aeration pipe at different positions.

The utility model is applicable to the technical field of wastewater treatment, and particularly relates to a separated ozone catalytic oxidation tower which comprises an oxidation tower body, a separation plate is vertically arranged in the middle area in the oxidation tower body, and the interior of the oxidation tower body is divided into a primary reaction area and a secondary reaction area by the separation plate; a supporting layer is connected to the interior of the first-stage reaction region. According to the utility model, the primary reaction zone and the secondary reaction zone are separately arranged, and ozone catalyst catalytic oxidation and ozone hydrogen peroxide catalytic oxidation treatment are respectively adopted, so that the removal efficiency of complex pollutants in wastewater is improved, and deep purification is realized. Meanwhile, a circulating pump and a jet device are designed, so that ozone and hydrogen peroxide are fully mixed with wastewater, the utilization rate of an oxidant is increased, and the cost is reduced. The whole equipment is compact in structure, multiple towers connected in series are integrated in a single tower, and the occupied space and the operation complexity are reduced.

The utility model relates to the technical field of wastewater treatment, and particularly discloses a membrane catalytic ozonation reactor which comprises a reactor body (100), and a wastewater adding assembly (200) and a catalyst adding pipe (300) are respectively arranged at the upper part of the side surface of the reactor body (100); a micro-nano bubble generator (400) is arranged at the bottom in the reactor body (100), and the micro-nano bubble generator (400) is communicated with an ozone source; at least one membrane catalysis assembly (600) is connected to the reactor body (100) in a closed loop manner. The device has the characteristics of sufficient contact reaction between hydroxyl free radicals and organic matters and higher utilization rate of catalytic ozonation.

The invention discloses a system for treating leachate of a household garbage incineration plant based on direct ammoxidation, and relates to the technical field of treatment of the leachate of the household garbage incineration plant. A wastewater outlet of an anaerobic hydrolysis acidification reactor is connected to a water inlet of a first sedimentation tank, and a water outlet of the first sedimentation tank is connected to a water inlet of a direct ammoxidation reactor; a water outlet of the direct ammoxidation reactor is connected with a water inlet of the second sedimentation tank; a water outlet of the second sedimentation tank is connected with a water inlet of the heterotrophic denitrification reactor; a water outlet of the heterotrophic denitrification reactor is connected to a water inlet of the membrane bioreactor; a membrane water outlet of the membrane bioreactor is connected to a water inlet of the catalytic ozonation reactor, and effluent of the catalytic ozonation reactor flows into a water outlet barrel. The system does not need to add an expensive carbon source, so that the treatment process is simplified, the occupied area is reduced, and the construction investment and the operation cost are reduced to a certain extent.

A catalytic ozonation sewage treatment device is mainly used for treating petrochemical wastewater and comprises a rectangular frustum reaction tower with a narrow top and a wide bottom as a main body, a water inlet pipe arranged on the side wall of the top of the tower and connected to a rectangular spraying plate at the upper part of the reaction tower, a cone top arranged at the top of the reaction tower, an ozone destructor connected to the top of the cone top, and an arc-shaped base plate arranged at the bottom of the tower body, the side wall of the bottom of the tower body is connected with an inlet of a water outlet pipe, a first catalytic filler layer at the upper part is arranged in the tower body, a second catalytic filler layer at the lower part is arranged in the tower body, a horizontal first mesh sieve plate is arranged between the first catalytic filler layer and the second catalytic filler layer, and a horizontal second mesh sieve plate is arranged below the second catalytic filler layer; a horizontal rectangular microporous aeration plate is arranged at the lower part of the second mesh sieve plate and is connected with an external ozone generator through a pipeline. The device has the characteristics of uniform gas-liquid mixing and high ozone utilization rate.

The invention relates to the technical field of wastewater advanced treatment and zero emission, in particular to an ozone catalytic oxidation and degassing wastewater advanced treatment system and process. The wastewater treatment system comprises an ozone catalytic oxidation system and an activated carbon degassing system. The advanced wastewater treatment process comprises the following steps: conveying wastewater to a catalytic ozonation pond, adding ozone into the pond in stages, enabling the wastewater to enter the catalytic ozonation pond again through a secondary mixing device, and carrying out catalytic oxidation reaction under the action of ozone; pretreated sewage automatically flows into an activated carbon filter tank, an activated carbon loaded manganese dioxide catalyst is adopted as a filter material in the activated carbon filter tank, and meanwhile, an ultraviolet or near-infrared irradiation device is arranged and cooperates with activated carbon and electromagnetic waves to treat residual ozone. The ozone catalytic oxidation and activated carbon degassing combined advanced wastewater treatment process adopted by the invention is advanced and mature, small in occupied area, low in operation cost, simple in process, high in automation degree and extremely low in sludge yield, and can realize comprehensive and efficient removal of pollutants in high-salinity wastewater; valuable technical support and engineering instance reference can be provided in the field of wastewater advanced treatment and zero emission.

The invention discloses a method for purifying water by catalyzing ozonation through a nitrogen-fluorine co-doped carbon-loaded cobalt nanomaterial. Co-ZIF-8 and polytetrafluoroethylene (PTFE) are respectively used as a precursor and a fluorine source, and the nitrogen-fluorine co-doped carbon-loaded cobalt nano-catalyst is successfully prepared through an etching synchronous doping strategy. The composite material can be used for catalyzing ozone to degrade organic pollutants in water. Nitrogen doping can promote formation of a metal-nitrogen coordination structure, and decomposition of ozone on the surface of the catalyst is facilitated. Fluorine modification can significantly enhance the hydrophilicity of the composite material and accelerate the solid-liquid reaction of ozone in a solution and a catalyst interface, and the strong electron withdrawing effect of fluorine can effectively adjust the electronic structure of the catalyst and promote the generation of strong oxidizing active oxygen species, thereby achieving efficient and rapid removal of pollutants. The water treatment method solves the problem of low ozone utilization rate in a conventional catalytic ozonation process, has the advantages of high reaction rate and stable treatment effect, and has a good application prospect.

The invention relates to the technical field of catalyst preparation, in particular to a preparation method and application of a catalytic ozonation composite catalyst, ceramsite is selected as a carrier, the preparation is simple, the price is low, the structure is stable, uniform loading of active components is facilitated, and the rate of catalytic oxidation reaction is increased. The ceramsite-loaded Fe, Mn, Al and Ti catalyst is prepared by adopting a spherical granulation method, active components are firmly loaded and uniformly distributed, the dispersity is high, the preparation process is simple, the repeatability is high, and the energy consumption is low. The selected carrier and active components are common commercially available materials, and the preparation cost is low. The prepared catalyst can generate more hydroxyl radicals, the oxidation efficiency and the utilization rate of ozone are improved, the catalytic oxidation efficiency on refractory organic matters is greatly improved and is improved by 45% or above compared with single ozone oxidation, and therefore the problem that an existing multiphase ozone catalyst is poor in stability is solved.

The utility model relates to the technical field of sewage treatment, in particular to a catalytic ozonation reactor and system for high-salinity wastewater, which comprises a tank body, a water inlet distributor is arranged at the upper part in the tank body, a water inlet pipeline extending out of the tank body is connected onto the water inlet distributor, and a water outlet pipeline extending out of the tank body is connected onto the water inlet pipeline. A breathing opening is formed in the top of the tank body; a water production pipeline and an ozone inlet device are arranged at the bottom of the tank body; a liquid secondary distributor, a catalyst bed and a gas secondary distributor are sequentially and fixedly arranged in the tank body from top to bottom; according to the utility model, incoming water is sprayed out at an included angle of 5-10 degrees with the tangential direction, so that the whole water flow is ensured to flow from top to bottom in a micro internal rotation manner, 'disturbance 'rather than'floating' of a catalyst is ensured to the greatest extent, and rapid reaction is facilitated, thereby greatly improving the COD removal rate on the premise of greatly reducing the investment and energy consumption of the device.

The composite catalytic ozonation reaction tower comprises a tower body, an air outlet is formed in the top of the tower body, a sewage tank is fixedly connected to the interior of the tower body, a cover is fixedly connected to the upper end of the sewage tank, a communicating opening is fixedly connected to the cover, and the communicating opening is communicated with the sewage tank. An electromagnetic valve is arranged on the communicating port, a water inlet pipe is arranged at the left end of the sewage tank, and the water inlet pipe is fixedly connected with the tower body. Through design of the rotating motor, the rotating motor can drive the stirring rod to rotate to stir and mix sewage and an oxidizing agent for reaction, the purpose of sewage treatment is achieved, and in the treatment process, due to the fact that the sewage tank is in a closed state, ozone can stay in the sewage tank for a longer time, and the ozone is prevented from flowing into the sewage tank. And when the air pressure in the sewage tank is too high, the gas can be automatically discharged through the fixed seat, so that the safety is improved.

The utility model relates to a catalytic ozonation tower for advanced treatment of coking wastewater, which comprises an upper tower section and a lower tower section, the top of the lower tower section is detachably communicated with the bottom of the upper tower section, a plurality of partition plates are vertically distributed in the lower tower section at intervals, one end of each partition plate is fixedly connected with the inner side wall of the lower tower section, and a gap is reserved between the other end of each partition plate and the inner side wall of the lower tower section. The fixed ends of every two adjacent partition plates are opposite, an ozone channel is arranged in the fixed end of each partition plate, air inlet pipes are arranged on the left outer side and the right outer side of the lower tower section, the two air inlet pipes are communicated through a conveying pipeline, one end of each ozone channel is communicated with the adjacent air inlet pipe through an air inlet branch pipe, and the other end of each ozone channel is communicated with an aeration head fixedly arranged at the bottom of the corresponding partition plate. Two mesh plates are distributed between the aeration head and the free end of the corresponding partition plate, a catalyst is filled between the two mesh plates, and the bottom of the lower tower section corresponding to the fixed end of the lowermost partition plate is communicated with a water inlet pipe. According to the utility model, multiple aeration mixing and catalytic oxidation of wastewater can be realized, and the overall treatment quality is higher.

The utility model relates to the technical field of industrial wastewater treatment, and discloses a multi-stage catalytic ozonation industrial wastewater treatment device, which is characterized in that a plurality of treatment cavities are arranged in a shell and comprise a first-stage treatment cavity, a second-stage treatment cavity and a third-stage treatment cavity which are respectively positioned below a partition plate I, a partition plate II and a partition plate III. And each partition plate is provided with an overflow pipe and an ozone generator. The multi-stage treatment cavity can realize stage-by-stage treatment of the wastewater, so that ozone is in full contact with pollutants in the wastewater, and the treatment efficiency and the treatment effect are improved. Ozone generators are mounted in all stages of treatment cavities, so that ozone can be uniformly distributed in each treatment stage, and the oxidation reaction is further enhanced. Besides, the arranged on-line monitoring module can monitor key indexes in the wastewater in real time, such as COD (chemical oxygen demand), BOD (biochemical oxygen demand) and pH value, so that accurate control and optimization of the treatment process are realized.

The invention relates to a system (100) for treating an effluent (1, 3) from a vehicle washing station and comprising a polluting material, said system (100) being configured to receive said effluent (1, 3) from a vehicle washing station, to generate a direct current whose current density is between 1.4 A / m² and 7.5 A / m², in particular between 1.7 A / m² and 5.5 A / m², most particularly between 1.75 A / m² and 1.8 A / m², to carry out the electrozonation of the effluent (1, 3) received by ozone partially decomposed with the direct current generated and thus obtain an electrozoned effluent (9), and to carry out a catalytic ozonation of the electrozoned effluent (9) in order to obtain a treated effluent. Figure for the abstract: Figure 1

The invention provides a catalyst for heterogeneous catalytic ozonation and a preparation method and application thereof. The method for preparing the catalyst comprises the following steps: providing biomass derived from bamboo; contacting the biomass with a chemical stripping agent and reacting under hydrothermal reaction conditions to strip hemicellulose and lignin from the biomass so as to obtain a stripped biomass; subjecting the exfoliated biomass to a pyrolysis process to obtain a carbon skeleton; and loading a metal on the carbon skeleton to obtain the catalyst. The mechanical strength and stability of the obtained catalyst base material can be improved, and the specific surface area of the catalyst base material can be increased, so that the prepared catalyst has an improved organic matter removal effect.

The utility model belongs to the technical field of treatment devices, and particularly relates to a coking wastewater ozone catalytic oxidation advanced treatment device, which comprises a reaction tower, a catalytic oxidation device, a catalytic oxidation device and a catalytic oxidation device, the ozone generator can guide ozone into the cavity; the driving assembly can apply rotating force into the cavity, so that the catalytic ozonation advanced treatment of the coking wastewater is more uniform; and the collecting assembly is coupled with the driving assembly, the collecting assembly is set to rotate along with the driving assembly and collect floating foam in the cavity, the driving piece is started to drive the first rod to rotate, the first rod drives the third rod to rotate, the third rod drives the plate body to rotate, and the plate body drives the collecting protrusion to rotate; at the moment, the collecting protrusions continuously make contact with the floating foam above the liquid level in the cavity, part of the floating foam is collected between the plate body and the collecting protrusions to be stored, and therefore the influence of the floating foam on the interior of the cavity is reduced.

The invention relates to the technical field of environmental engineering, in particular to a method for treating wastewater produced by alkaline pretreatment of a cellulose raw material. The method comprises the following steps: step 1, carrying out solid-liquid centrifugal separation; 2, adjusting the pH value of the wastewater I; step 3, diluting the wastewater II; step 4, performing solid-liquid separation on the kettle residues to obtain wastewater IV; 5, carrying out anaerobic biochemical reaction on the wastewater; step 6, carrying out catalytic ozonation reaction on the wastewater; and 7, carrying out biochemical treatment on the wastewater. Fuel biogas is generated in the anaerobic biochemical treatment process of the cellulosic ethanol wastewater, and the fuel biogas belongs to a biological energy source, so that the energy utilization rate is increased; the biodegradability of the wastewater can be improved through the catalytic ozonation reaction, the biochemical effect can be improved by adopting a biological aerated filter in aerobic biochemical treatment, and the COD value of the cellulosic ethanol wastewater can be greatly reduced, so that the energy consumption is reduced.

The invention provides a microbubble internal circulation catalytic ozonation reaction system which comprises an ozone generation unit, a catalytic ozonation unit and a tail gas recovery treatment unit which are connected in sequence, and a wastewater pipeline enters the ozonation unit through a wastewater inlet; the catalytic ozonation unit comprises a reactor main body, a central flow guide descending cylinder, a catalyst module and microbubble distributors, the central flow guide descending cylinder is arranged in the reactor main body, the liquid outlet end of the wastewater pipeline is distributed above the central flow guide descending cylinder, and the microbubble distributors are distributed on the outer side of the bottom of the central flow guide descending cylinder in a surrounding manner; the ozone generator is connected with the ozone generating unit; the catalyst module is arranged in the reactor main body and is distributed between the inner wall of the reactor main body and the central flow guide descending cylinder. An internal circulation flow field is driven by jet flow, micro-bubbles are generated in combination with an aeration technology, and gas-liquid-solid three-phase mass transfer is synergistically enhanced, so that catalytic ozonation degradation of pollutants is realized, the ozone utilization rate is increased, and the problem of traditional aeration blockage is solved.

The application discloses a manganese-cobalt spinel catalyst preparation and application in catalytic ozonation VOCs, belonging to the field of material technology. The application comprises the following steps: manganese salt and cobalt salt are added into water and ultrasonically dissolved, a honeycomb ceramic substrate is grown in the obtained solution, the treated honeycomb ceramic substrate is taken out after the solution becomes light purple; the dipping is repeated for three times; the honeycomb ceramic substrate after the dipping treatment is dried and calcined; the honeycomb ceramic substrate after the calcination is soaked in an acetic acid solution, then the excess solution in the pore is blown away, then the honeycomb ceramic substrate is dipped in a lanthanum salt solution, the excess solution in the pore is blown away after the honeycomb ceramic substrate is taken out, the honeycomb ceramic substrate is dried, and the honeycomb ceramic substrate is calcined again after being heated, so that the manganese-cobalt spinel catalyst is obtained. The manganese-cobalt spinel catalyst prepared by the method has 100% catalytic decomposition activity on toluene, methanol and propylene at room temperature, and has 100% catalytic decomposition activity on ethyl acetate at 53 DEG C. Further simulation of the real environment test results show that the catalytic ozonation decomposition efficiency of the manganese-cobalt spinel catalyst on toluene, xylene and ethyl acetate reaches 100% at room temperature.

The invention relates to an advanced treatment method and system for Maotai-flavor liquor wastewater, and belongs to the technical field of wastewater treatment.The advanced treatment method comprises the steps that S1, primary catalytic ozonation treatment is conducted on liquor wastewater obtained after secondary biochemical treatment, and primary catalytic ozonation effluent is obtained; s2, performing biochemical treatment on the primary catalytic ozonation effluent to obtain biochemical effluent; the biochemical treatment is performed according to the series operation of aerobic reaction, anaerobic reaction and aerobic reaction; s3, carrying out secondary ozone catalytic oxidation treatment on the biochemical effluent; and S4, refluxing the secondary catalytic ozonation effluent, mixing the refluxed secondary catalytic ozonation effluent with the primary catalytic ozonation effluent, and repeating the steps S2 and S3. The advanced treatment method provided by the invention can effectively remove refractory organic matters and various forms of nitrogen in the Maotai-flavor liquor wastewater, has a relatively good removal effect on COD, ammonia nitrogen and total nitrogen in the wastewater, and ensures that various indexes of final discharged water stably reach the standard.

The utility model discloses a novel NCOBR coupling device which comprises catalytic ozonation equipment, an ozone generator is arranged on one side of the catalytic ozonation equipment, a water outlet pipeline is connected to gas-water mixing equipment, and the output end of the gas-water mixing equipment is connected to the bottom of an internal circulation biological aerated filter; comprising a backwashing system, the backwashing system comprises a backwashing air pipeline and a backwashing water pipeline, and the backwashing air pipeline and the backwashing water pipeline are both connected to the ozone catalytic oxidation equipment and the internal circulation biological aerated filter. According to the utility model, ozone is effectively utilized to catalytically oxidize effluent residual oxygen, the oxygen content required by the growth of BAF microorganisms is ensured under the condition of no aeration, effective degradation of COD is realized, and the effluent residual oxygen of the ozone reactor is directly utilized by optimizing the communication mode of the ozone reactor and the BAF, so that the energy waste is reduced, the residual ozone is utilized to supply oxygen, and the energy consumption is reduced. And an oxygen supply mode of traditional BAF aeration is cancelled, so that the investment cost and the operation cost are reduced.

The invention provides a quality-divided collection zero-emission treatment method and system for solar cell wastewater, and belongs to the technical field of advanced treatment and resource utilization of industrial wastewater. Comprising the following steps: sequentially performing filtration and reverse osmosis concentration on dilute acid wastewater; the fluorine-containing wastewater is sequentially subjected to fluorine removal, filtration and reverse osmosis concentration, and obtained concentrated water is subjected to hardness removal, filtration, ion exchange resin hardness removal, electrodialysis and evaporative crystallization to obtain sodium chloride; sequentially carrying out silicon removal, filtration and reverse osmosis concentration on the dilute alkali wastewater; the concentrated alkali wastewater is sequentially subjected to silicon removal, filtration, catalytic ozonation and reverse osmosis concentration, and the obtained concentrated water is sequentially subjected to refractory organic matter removal, silicon removal, filtration and electrodialysis; sequentially removing sulfate radicals and fluorides from the concentrated acid wastewater, and filtering; the acid-nitrogen wastewater is sequentially subjected to filtration, reverse osmosis concentration, sulfate radical and fluoride removal, hardness removal, filtration and nanofiltration, and nanofiltration fresh water is sequentially subjected to fluorine removal, hardness removal, reverse osmosis concentration and evaporative crystallization to obtain calcium nitrate. The conversion from traditional large-water-volume low-concentration mixed treatment to low-flow high-concentration quality-divided wastewater treatment is realized.

The utility model relates to a photocatalytic ozone catalytic oxidation device which comprises a gas dissolver for mixing water and ozone into a mixed solution; the photo-catalytic oxidation reaction unit comprises a plurality of photo-catalytic tubes, the photo-catalytic tubes are used for carrying out turbulent flow on the mixed liquid, and first reaction liquid is formed after photo-catalytic oxidation; and the ozone catalytic oxidation reaction unit is used for performing ozone catalytic oxidation on the first reaction liquid. The photocatalytic tube is arranged, so that the turbulent flow effect on liquid is enhanced, ultraviolet penetration is facilitated, a photocatalyst on each surface of the catalyst sleeve is irradiated by adjacent ultraviolet rays in the photocatalytic oxidation reactor, the utilization area of the photocatalyst is increased, and the ozone utilization rate and the COD removal efficiency are further improved; further, the usage amount of the catalyst in the catalytic ozonation reactor is reduced, and the problem of deposition caused by excessive catalyst is avoided.

The application discloses a kind of iron cobalt oxide catalyst preparation and in catalytic ozonation VOCs application, belong to material technical field.The present application utilizes impregnation calcination method to synthesize this catalyst, including the following steps: a certain proportion of iron salt and cobalt salt are dissolved by water ultrasonic, after salt dissolution, solution becomes brown yellow, honeycomb ceramic is placed in brown yellow solution and is impregnated treatment, blows and removes residual liquid, and is treated by drying;Repeat processing;The treated honeycomb ceramic is calcined, and iron cobalt oxide catalyst is obtained.The catalyst is low in catalytic cost under the action of ozone to low concentration VOCs, compared with traditional method, can be operated at room temperature to realize high removal rate, while realizing low energy consumption, reduce the risk of secondary pollution.