49 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 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 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 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 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 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 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 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 application discloses a treatment system and method for turbulent catalytic ozone oxidation of wastewater. The treatment system utilizes the strong power provided by water-gas mixing to make the fluid in the intense turbulent motion of swirling and tumbling, improves the gas-liquid-solid contact and mixing behavior, realizes the fluidization of the large-density powder catalyst, promotes the interphase mass transfer, and greatly improves the treatment efficiency of pollutants. The application can fully utilize the catalytic advantages of the ozone catalyst and the strong power provided by water-gas mixing, effectively solve the fluid dynamics inertia of the micron zero-valent iron powder as the ozone catalyst caused by the large density, and enhance the mass transfer between the solid-liquid-gas phases.

The invention discloses a catalytic ozonation reaction device and a use method thereof. The catalytic ozonation reaction device comprises a catalytic ozonation unit, a reduction unit and an ozone secondary utilization unit, the ozone catalytic oxidation unit is an independent first reaction zone, sewage needing to be purified and hydrogen peroxide are input through a first water inlet, circulating water containing ozone is input through a circulating water inlet, liquid caustic soda is added through a liquid caustic soda adding port, and primary tail gas is output to the ozone secondary utilization unit through a first exhaust port. Excessive water is output to the reduction unit through the No.1 water outlet; the reduction unit and the ozone secondary utilization unit are a No.2 reaction zone and a No.3 reaction zone which are arranged in the same box-type reactor and are separated by a partition wall; and the primary tail gas is conveyed to an aerator close to the bottom in the No.3 exhaust port through a gas conveying pipeline, and is dispersed into the water body in the No.3 exhaust port through the aerator. Ozone is efficiently utilized, interference of residual oxidizing agents is eliminated, secondary utilization of ozone tail gas is achieved, and the operation cost is reduced.

A salt-containing sewage treatment parallel system based on a catalytic ozonation process is characterized in that an adjusting tank, a primary bottom settling tank, a micro-nano air floatation tank and diatomite microfiltration equipment are sequentially connected, and the primary bottom settling tank, the micro-nano air floatation tank and the diatomite microfiltration equipment are simultaneously connected with a solid residue collecting tank; a liquid outlet of the diatomite microfiltration equipment is connected with a first aerobic tank, the first aerobic tank is sequentially connected with a first anoxic denitrification tank, a second aerobic tank, a second anoxic denitrification tank and a tail end sedimentation tank, the tail end sedimentation tank is connected with a primary sedimentation tank and MBR membrane filtration equipment, and the first set of system and the second set of system have the same structure; the water outlet end of the MBR membrane filtration equipment is respectively connected with the two ozone reaction tanks; the solid residue collecting tank is connected with the liquid fertilizer manufacturing pool. All indexes in sewage are efficiently treated through the micro-nano aeration system and the microbial agent, reaction between ozone and organic matter is promoted, the oxidation effect is enhanced, and standard discharge of three types of seawater is achieved.

The utility model relates to the technical field of sewage treatment, in particular to a catalytic ozonation advanced treatment device for oil refining sewage, which is used for carrying out two-stage catalytic oxidation treatment on the oil refining sewage, so that the contact area of the oil refining sewage and ozone is larger, and the catalytic oxidation efficiency is improved. Comprising a sewage tank, a sewage pipe, an ozone generator and an oxidation tank, the mixing nozzle is mounted at the bottom of the oxidation tank, the output end of the ozone generator is connected with the input end of the mixing nozzle, the output end of the sewage pipe extends into the mixing nozzle, the conical coaming is mounted at the upper middle part of an oxidation chamber of the oxidation tank, the upper partition plate is mounted on the top wall of the oxidation tank, and the discharge pipe is mounted on the lower middle part of the oxidation chamber. The upper partition plate is located between the outer wall of the conical coaming and the inner wall of the oxidation tank, a gap is formed between the lower edge of the upper partition plate and the bottom of the conical coaming, the discharge pipe is installed on the outer wall of the oxidation tank, and the input end of the discharge pipe extends between the upper partition plate and the oxidation tank and is lower than an upper port of the conical coaming.

The invention relates to the technical field of sludge dewatering, in particular to a refining sludge dewatering method. The method comprises the following steps: 1, continuously adding sludge into a loop reactor filled with a powdered copper oxide catalyst, and carrying out catalytic ozonation treatment; 2, feeding the sludge treated in the step 1 into a conditioning tank I, performing flocculent precipitation, feeding lower-layer settled sludge into a conditioning tank II, fully mixing with powdery activated carbon, and performing centrifugal separation; and 3, conveying the sludge obtained in the step 2 into a vacuum screw extrusion one-step dehydrator, and further intensively dehydrating to finally obtain the sludge. According to the method, the water content of the sludge is reduced, the sludge is reduced, the sludge treatment cost of a sewage treatment plant is reduced, and secondary pollution to the environment is reduced.

The invention relates to the field of high-purity vanadium ammonia-nitrogen wastewater treatment, and discloses a reverse osmosis-catalytic ozonation combined treatment method for high-purity vanadium ammonia-nitrogen wastewater. The method comprises a reverse osmosis treatment step and a catalytic ozonation treatment step, and a catalyst adopted in the catalytic ozonation treatment step comprises the following components in parts by weight: 1-2 parts of metal oxide; 40-60 parts of activated carbon; 0.5-1 part of an adhesive; the metal oxide is an oxide containing copper, cobalt, manganese, hafnium and lanthanum elements. Through a combined treatment method of reverse osmosis and catalytic ozonation, cooperative treatment of the high-purity vanadium ammonia nitrogen wastewater is realized, and the problem that pollutants are not thoroughly removed in the traditional technology is solved.

The invention discloses an integrated electro-catalytic ozonization medical sewage treatment device which comprises an equipment support, a preprocessor and three sewage treatment tanks, the preprocessor is arranged on the right side of the equipment support and connected with the equipment support, and the three sewage treatment tanks are arranged on the equipment support at intervals. Integrated sewage treatment structures are mounted on the three sewage treatment tanks, the pretreater is connected with the three sewage treatment tanks through an adjustable pipeline conveying structure, and ozone supply structures are arranged behind the three sewage treatment tanks; the invention relates to the technical field of medical sewage treatment equipment, and has the beneficial effects that the problems that most of existing medical sewage treatment devices are complex in structure, large in occupied area, low in integration degree and poor in synergism among treatment units, so that the treatment efficiency is not high, and the treatment cost is low are solved; the requirements of modern medical facilities on high efficiency, convenience and environmental protection of sewage treatment are difficult to meet.

The utility model discloses a steel catalytic ozonation contact reaction tank, and belongs to the technical field of catalytic ozonation. The reaction tank comprises a bottom plate, a side wall plate, a first stiffening rib, a first ozone contact chamber and a first ozone reaction chamber, wherein the bottom plate is used for being fixed with equipment; the side wall plate is fixedly arranged at the top end of the bottom plate; the first stiffening rib is fixedly arranged at the top end of the side wall plate; and two first stiffening ribs and two second stiffening ribs are arranged in the second ozone contact chamber and the second ozone reaction chamber. The steel catalytic ozonation contact reaction tank is suitable for treating degradation-resistant organic wastewater with the water amount larger than 10 m < 3 > / h and smaller than or equal to 100 m < 3 > / h, the whole tank is made of a steel structure, corrosion resistance is high, meanwhile, by arranging the ozone distribution device, wastewater and ozone flow reversely and are fully mixed and contacted with an ozone catalyst after being distributed, and the treatment effect is good. The catalytic ozonation reaction efficiency is improved.

The invention belongs to the field of catalyst preparation technologies and wastewater treatment, and particularly relates to a preparation method and application of a salt-resistant supported copper-manganese spinel catalytic ozonation catalyst. The preparation method comprises the following steps: dissolving Cu (NO3) 2.3 H2O and MnCl2. 4H2O in a molar ratio of 1: 2 at room temperature by adopting a dipping and calcining method, then adding an Al2O3 carrier activated by NaOH, and dipping for 12 hours; and drying in a vacuum oven at 60 DEG C overnight, transferring into a tubular furnace, and calcining for 4 hours at 600 DEG C in an Ar atmosphere to obtain CuMn2O4 / Al2O3. The catalyst realizes double improvement of the number of active sites and intrinsic activity through metal-carrier electron interaction, and obviously enhances the activation capability on ozone. The non-free radical oxidation pathway (dominated by surface adsorption state oxygen atoms * O and singlet oxygen < 1 > O2) has strong anti-interference capability, and is suitable for advanced treatment of high-salt organic wastewater.

An ozone catalytic oxidation reaction tower can realize gas-liquid intermittent contact and separation, and comprises a tower tank, a gas distribution disc, a gas-liquid separation layer, a liquid level meter, a spray header, an ozone generator and an ozone destructor, the centralized water treatment direct drinking water system containing the catalytic ozonation reaction tower further comprises a raw water inlet pipeline, a raw water tank, a booster pump, a sand filter, a carbon filter, an ion exchanger, a micron filter, a nano filter, a water supply pump set, a water return pipeline and a precision filter. According to the catalytic ozonation reaction tower disclosed by the utility model, water to be treated falls down layer by layer in a raining form through the spray heads and the densely-distributed drainage grooves in the gas-liquid separation layer, and ozone is dispersed in the tower tank through the densely-distributed exhaust holes and is gradually lifted, so that the ozone and the water to be treated are in large-range contact and long-time full contact; the pollutant degradation efficiency of ozone is greatly improved; according to the direct drinking water system applying the reaction tower, as the water treatment efficiency is improved, 'treatment and pumping 'are realized at the peak period of water consumption.

The utility model discloses an integrated biological aerated filter-catalytic ozonation device which comprises a device wall, a biological aerated filter is arranged on the device wall, a catalytic ozonation area is arranged on the device wall, the catalytic ozonation area is arranged above the biological aerated filter, a filter plate is arranged in the device wall, and the filter plate is arranged above the biological aerated filter. An effluent weir is arranged at the top of the device wall. According to the integrated biological aerated filter-ozone catalytic oxidation device, ozone is placed in the biological aerated filter after being subjected to catalytic oxidation, so that the disinfection effect of effluent of the biological aerated filter is improved, and the possibility that the effluent of the integrated biological aerated filter-ozone catalytic oxidation device is used for factory-like circulating aquaculture is further enhanced; hydrogen peroxide is adopted to catalyze ozone oxidation, no anion and cation residues exist after use, and the possibility that the effluent of the integrated biological aerated filter-ozone catalytic oxidation device is used for factory-like circulating aquaculture is improved.

The invention relates to the field of industrial wastewater treatment of environmental engineering, and discloses a treatment method and application of methionine production wastewater, and the treatment method comprises the following steps: (1) pre-conditioning the methionine production wastewater, and then carrying out anaerobic biological treatment; (2) oxygenating the wastewater treated in the step (1), and carrying out aerobic treatment; and (3) carrying out catalytic ozonation on the wastewater treated in the step (2). According to the treatment method of the methionine production wastewater, the methionine production wastewater can be better degraded, and the total amount of discharged pollutants is reduced; the problem of toxicity inhibition by formaldehyde, acrylic acid and the like can be avoided, and the application range is wider; meanwhile, the treatment method of the methionine production wastewater can save a large amount of natural gas consumed by an incineration method and reduce carbon emission; in the preferred embodiment of the invention, the biogas generated by the treatment method for the methionine production wastewater can be used as a combustion aid, so that the energy is further saved.

The utility model relates to the technical field of wastewater treatment, and provides an activated carbon catalytic ozonation sewage treatment device which comprises a base and a reaction box, supporting legs are connected to the four corners of the bottom end of the reaction box, the bottom ends of the four supporting legs are connected to the base, a threaded opening is formed in the top end of the reaction box, and a control groove is formed in the top end of the base. A mounting plate is slidably connected into the control groove, an RO concentrated water tank and an ozone generator are mounted at the top end of the mounting plate, a water guide pipe and an air guide pipe are arranged at the top ends of the RO concentrated water tank and the ozone generator respectively, a top cover is arranged at one end of the water guide pipe and one end of the air guide pipe, an annular sliding groove is formed in the outer wall of the top cover, and a threaded part is slidably connected to the annular sliding groove. A threaded rod is rotationally connected to the inner side wall of the control groove, the mounting plate is in threaded connection with the threaded rod, a fixing ring is connected to the inner side wall of the reaction box, and an activated carbon box is slidably connected into the reaction box, so that activated carbon is conveniently replaced, and the purpose of improving the working effect is achieved.

The application discloses a method for selectively synthesizing methyl formate by catalytic ozonation of methanol at ultralow temperature by using a graphdiyne catalyst, and belongs to the technical field of fine chemical engineering. The method comprises the following steps: using graphdiyne as a catalyst, and performing a catalytic reaction in a mixed gas atmosphere containing methanol and ozone to selectively synthesize methyl formate; the temperature of the catalytic reaction is-25-25 DEG C; the concentration of methanol in the mixed gas atmosphere is 3000-10000 ppm; and the concentration of ozone in the mixed gas atmosphere is 750 ppm. The activity test results show that the graphdiyne catalyst has a methyl formate selectivity of 92% and a 16-cycle test stability at ultralow temperature (25 DEG C). In the method, the graphdiyne catalyst does not need to be activated, has high catalytic activity, and contains no metal, so that no environmental pollution is caused.

The invention discloses a hybrid boron-carbon-nitrogen catalyst, a preparation method thereof and application of ozone catalysis, and relates to the technical field of ozone catalytic materials. The hybrid boron-carbon-nitrogen catalyst comprises a carbon-nitrogen carrier of a stacked sheet structure and boron atoms located in carbon-nitrogen crystal lattices of the carbon-nitrogen carrier, the atom content of the boron atoms in the hybrid boron-carbon-nitrogen catalyst is 22-42%, and the proportion of B-N2O in the coordination configuration of the boron atoms in the carbon-nitrogen crystal lattices is not lower than 10%. According to the hybrid boron-carbon-nitrogen catalyst disclosed by the invention, by constructing a B-N2O electron interaction structure, active sites of the catalyst are increased, meanwhile, the inherent catalytic activity of the catalyst is improved, adsorption / activation of ozone at a B site is accelerated, and active oxygen species such as surface atomic oxygen and singlet oxygen with high oxidation-reduction potential are generated; therefore, heterogeneous catalytic ozonation is realized in a non-free radical path, rapid degradation of pollutants is realized, and the catalyst has relatively strong anti-interference capability and cycling stability.

The application discloses a bimetallic composite oxide modified ceramic membrane and a preparation method and application thereof, and belongs to the technical field of ceramic membranes. The application takes industrial-grade alumina as raw material, reduces the sintering temperature of a ceramic membrane support body by adding a binder, a pore-forming agent, a fluxing agent, an anti-shrinkage agent and the like, and reduces the production cost of the ceramic membrane; a bimetallic oxide composite coating with a catalytic ozonation function is constructed on the surface of the ceramic membrane, oxidation degradation of organic pollutants on the surface of the ceramic membrane is realized, and the anti-pollution performance and service life of the ceramic membrane are improved. The application solves the problems of high production cost and easy membrane pollution of the existing ceramic membrane.

The invention provides a wastewater treatment system and method, and relates to the technical field of wastewater treatment.The system comprises a first-stage normal-pressure reactor, a second-stage high-pressure reactor and a gas collector which are sequentially arranged, the first-stage normal-pressure reactor is provided with a wastewater inlet, and the first-stage normal-pressure reactor and the second-stage high-pressure reactor are connected through a first liquid conveying pipeline; the first liquid transmission pipeline is connected with an ozone supply device, a catalyst is arranged in the second-stage high-pressure reactor, the second-stage high-pressure reactor is connected with the gas collector through a second liquid transmission pipeline, and the top of the gas collector is connected with the bottom of the first-stage normal-pressure reactor through a gas transmission pipeline; a water production port is formed in the bottom of the gas collector; the problems that in the prior art, a catalytic ozonation system is low in mass transfer efficiency, the reaction rate is limited, and resource waste is caused by low ozone utilization rate are solved.

The invention discloses a micro-bubble distributed catalytic ozonation wastewater reaction device, and belongs to the technical field of sewage treatment equipment.The micro-bubble distributed catalytic ozonation wastewater reaction device comprises a reaction box body, a fixing ring is fixedly connected to the upper end of the reaction box body, and a mounting cover is arranged on the fixing ring; the fixing ring and the mounting cover are fixedly mounted through a plurality of groups of fixing bolts, a mixed dosing assembly is mounted in the mounting cover, and a catalytic shunting assembly is mounted in the reaction box body; a flow guide cover is arranged at the lower end of the catalytic shunting assembly and is fixedly mounted on the inner wall of the reaction box body. By designing the catalytic shunting assembly, almost all catalysts are ensured to participate in the catalytic ozonation reaction, so that the reaction efficiency and the ozone utilization rate are remarkably improved; and by designing the mixing and dosing assembly, the pH regulator and the water flow can be fully mixed and react within the shortest time.

The utility model discloses a catalytic ozonation device which comprises a catalytic reaction tower, an ozone aeration structure and an oil recovery structure, the catalytic reaction tower is provided with a liquid inlet, a first liquid outlet and a gas outlet, and a catalyst packing layer is arranged in the catalytic reaction tower; the gas outlet, the liquid inlet, the catalyst packing layer and the first liquid outlet are sequentially arranged at intervals in the vertical direction of the catalytic reaction tower; the ozone aeration structure comprises a first aeration disc and an ozone generator, the first aeration disc is located below the catalyst packing layer, and the ozone generator is connected with the first aeration disc; according to the catalytic reaction tower disclosed by the utility model, a mode of feeding water and discharging water is adopted, the first aeration disc is positioned below the catalyst packing layer, oil is prevented from being attached to the surface of a catalyst, and an oil recovery structure is arranged, so that a water-oil mixture gathered on the liquid level of wastewater can be recovered, and the treatment effect of the catalytic reaction tower is ensured.

The utility model relates to the technical field of wastewater treatment, in particular to a wastewater treatment catalytic ozonation reactor which comprises a reaction tank, a water outlet valve pipe is connected to the right side of the outer wall of the reaction tank in a penetrating mode, a supporting plate and a connecting frame are installed at the lower end of the reaction tank and the right end of the outer wall of the reaction tank respectively, and a bottom plate is fixedly connected between the supporting plate and the connecting frame. An air cylinder is installed at the upper end of the bottom plate. The output end of the air cylinder is fixedly connected with a lifting plate. Water can flow into the water outlet through the plurality of filtering holes and is discharged along with the water outlet, impurities and precipitates in the water can be isolated into the filtering frame by the plurality of filtering holes, so that the purpose of good collection effect of the reacted impurities and precipitates is achieved, and after the impurities and the precipitates are collected, a balancing weight needs to be rotated, so that the impurities and the precipitates can be separated from each other. And the filter frame can be taken out through a lifting handle mounted in the filter frame, so that the purpose of conveniently taking out and cleaning the collected impurities and sediments is achieved.