190 results about "Catalytic ozonation" patented technology

The invention provides a scattered wastewater centralized treatment method, and belongs to the technical field of sewage treatment.The treatment method comprises the following steps that S1, wastewater from various sources is classified and stored; s2, mixing in a reaction tank in proportion according to the type of the wastewater, then carrying out aeration stirring, and adjusting the pH to be acidic to obtain mixed wastewater; s3, carrying out iron-carbon micro-electrolysis treatment on the mixed wastewater to obtain treated wastewater, and enabling the treated wastewater to automatically flow into a sedimentation tank; s4, adjusting the pH value of the treated wastewater to be alkaline, then carrying out delayed aeration treatment, then carrying out coagulating sedimentation, and separating mud from water after the sedimentation is finished; s5, carrying out aeration stirring on the clear liquid, then introducing primary SAO3 ozone for catalytic oxidation, carrying out biochemical treatment by using activated sludge to obtain second treated wastewater, and carrying out sludge-water separation; s6, aerating and stirring the supernate, introducing secondary SAO3 for catalytic ozonation, and discharging into a buffer water tank; s7, the wastewater is cached in a discharge water tank, and sludge is packaged and subjected to outsourcing treatment after being subjected to gravity concentration; the method can be used for simultaneously treating various kinds of wastewater, and energy consumption and cost are remarkably reduced.

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 refers to an oxidation-reduction system configured for water or wastewater treatment by removal of organic and inorganic pollutants comprising a catalytic oxidation multiphase reactor (1) in series with a catalytic reduction multiphase reactor (6), wherein at least one catalytic bed (2,7) comprises a macrostructured catalyst. The invention also refers to a catalyst for heterogeneous catalytic ozonation and / or for heterogeneous catalytic reduction comprising an active component selected from a group consisting of a metal, a metal oxide, or a carbon-based material supported on a macrostructured catalyst. The combined processes (catalytic ozonation and reduction) are able to remove emerging organic and inorganic (micro)pollutants more efficiently, promoting not only the degradation and ultimately mineralization of organic pollutants, but also the transformation of resulting inorganic subproducts into non-harmful substances.

The invention relates to an oxygen-vacancy-rich perovskite catalyst for advanced treatment of organic pollutant wastewater through catalytic ozonation. The molecular structure of the oxygen-vacancy-rich perovskite catalyst is AxBO3-delta, wherein the A site is Ca, the B site is a metal active component, the metal active component is Mn, and delta is an oxygen vacancy and is 0-1; x is the stoichiometric value of A site, and the values of x are 1, 1.05, 1.1, 1.15 and 1.2. The catalyst has higher oxygen vacancy and higher catalytic activity; according to the catalyst, generation of superoxide free radicals (. O2 <->) is induced through oxygen vacancies, a new mechanism of Mn (II / III / IV) rapid circulation is constructed through the oxidation-reduction characteristic of. O2 <->, and the total yield of the free radicals is increased by 200%. The catalyst is simple in preparation process, rapid preparation of the catalyst can be achieved in the oil bath-roasting process, the catalyst is oriented to advanced treatment of organic pollutant wastewater, the catalyst has good catalytic performance, the cost is effectively saved, and the catalyst has wide prospects.

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 invention relates to the technical field of wastewater treatment, and provides a reverse osmosis (RO) concentrated water treatment method which comprises the following steps: step 1, treating sewage discharged by an RO concentrated water tank through a first catalytic ozonation module, a biological aerated filter module, a second catalytic ozonation module and a drainage reflux module in sequence; 2, online water quality detectors arranged at the water inlet ends of the first catalytic ozonation module, the biological aerated filter module, the second catalytic ozonation module and the drainage backflow module are used for monitoring water quality indexes in real time, and detection data are transmitted to an automatic control system; on-line water quality index detection is adopted, hysteresis of off-line detection is avoided, unattended operation, self-control operation and high process operation flexibility can be achieved, the method is suitable for application scenes with huge incoming water quality fluctuation, and parameters of the selected process module are easy to adjust and switch.

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 discloses an ozone catalyst and a preparation method and application thereof, Ni (NO3) 26H2O and Al (NO3) 29H2O are used as raw materials, and NiAl-LDH is prepared through a coprecipitation method; the preparation method comprises the following steps: preparing NiAl-LDH, reacting NiAl-LDH, AgNO3 and a Na2HPO4 solution to prepare Ag3PO4, and finally compounding NiAl-LDH and Ag3PO4 to prepare the ozone catalyst Ag3PO4 / NiAl-LDH composite material. The Ag3PO4 / NiAl-LDH composite material is used as an ozone catalyst to be applied to algae removal through combination of catalytic ozonation and a quorum sensing inhibitor, so that cell walls and internal structures of algae are more efficiently destroyed, and the algae removal effect is improved.

The invention discloses preparation of a manganese-cobalt spinel catalyst and application of the manganese-cobalt spinel catalyst in catalytic ozonation of VOCs, and belongs to the technical field of materials. Comprising the following steps: adding manganese salt and cobalt salt into water for ultrasonic dissolution, dipping a honeycomb ceramic substrate into the obtained solution for growth, and taking out the treated honeycomb ceramic substrate after the solution becomes light purple; repeatedly dipping for three times; drying and calcining the honeycomb ceramic substrate subjected to dipping treatment; and soaking the calcined honeycomb ceramic substrate in an acetic acid solution, then blowing away the redundant solution in the pore channels, then soaking the honeycomb ceramic substrate in a lanthanum salt solution, taking out the honeycomb ceramic substrate, continuously blowing away the redundant solution in the pore channels, drying the honeycomb ceramic substrate, and heating and calcining the honeycomb ceramic substrate again to obtain the manganese-cobalt spinel catalyst. The manganese-cobalt spinel catalyst prepared by the method provided by the invention has 100% catalytic decomposition activity to toluene, methanol and propylene at room temperature, and has 100% catalytic decomposition activity to ethyl acetate at 53 DEG C. A test result of further simulating a real environment shows that the catalytic ozonation decomposition efficiency of the manganese-cobalt spinel catalyst to three mixed components of toluene, xylene and ethyl acetate at room temperature reaches 100%.

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 catalytic ozonation reactor, system and method for high-salinity wastewater, relates to the technical field of sewage treatment, and particularly relates to a catalytic ozonation reactor, system and method for high-salinity wastewater. The water inlet distributor is connected with a water inlet pipeline extending out of the tank body, a breathing opening is further formed in the top of the tank body, and 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 invention, 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, so that the COD removal rate can be greatly improved on the premise of greatly reducing the investment and energy consumption of the device.

The invention relates to the field of solid waste resource utilization and the field of feed water treatment, in particular to a preparation method for preparing a catalyst for degrading typical odorous substances by using waste zinc-carbon batteries, an obtained product and application. The method comprises the following steps: firstly, taking a metal structure and a carbon structure of residues after crushing the waste zinc-carbon battery, grinding, mixing fine powder with a KOH solution, and drying to obtain a dry solid; the dry solid is calcined, the calcined solid is cooled and then washed, and the carbon-ZnMn2O4 catalyst is obtained. The preparation method provided by the invention is simple and low in cost, and the treated water body meets the condition that the concentration of typical smelly substances is below a smelly threshold value, and has certain commercial value. The catalyst provided by the invention can degrade a plurality of typical odorous substances, such as beta-cyclocitral, 2-MIB and the like, and is wider in application range; compared with single ozone oxidation, the removal rate of a catalytic ozonation system of the catalyst on typical odorous substances is higher, and the catalytic efficiency is remarkably improved; and through the utilization of the catalyst, the consumption of ozone is reduced, the influence on the environment is reduced, and the concept of green development is better met.

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 utility model relates to the technical field of wastewater treatment equipment, and particularly discloses a catalytic ozonation tower which comprises a tower body with a sealed top, and the tower body sequentially comprises a water inlet area, an upper ultraviolet irradiation area, a middle ozone inlet area, a lower ultraviolet irradiation area and a water outlet area from top to bottom, the upper ultraviolet irradiation area and the lower ultraviolet irradiation area are both provided with a plurality of ultraviolet lamp tubes, the middle ozone inlet area and the middle ozone outlet area are both connected with an ozone generator through pipelines, an exhaust port is formed in the top of the tower body, and the length direction of the ultraviolet lamp tubes is the same as the flowing direction of wastewater. According to the utility model, two layers of ultraviolet irradiation areas are arranged, and ozone is introduced below each layer of ultraviolet irradiation area, so that the contact time of the ozone and the ultraviolet lamp tube and the ultraviolet excitation time are prolonged, the total excitation efficiency of the ozone is improved, and the ozone treatment effect of wastewater is improved.

The invention discloses a titanium dioxide-based catalyst, a preparation method thereof and application of the titanium dioxide-based catalyst in catalytic ozonation of VOCs toluene, and belongs to the technical field of low-temperature catalytic oxidation. The preparation method of the titanium dioxide-based catalyst comprises the following steps: mixing titanium dioxide with a soluble metal solution to obtain a turbid liquid; and drying the turbid liquid, and calcining to obtain the titanium dioxide-based catalyst. The soluble metal solution is one or more of a soluble copper salt solution, a soluble platinum salt solution, a soluble cobalt salt solution and a soluble palladium salt solution. In addition, the invention also provides the titanium dioxide-based catalyst which is prepared by the preparation method. In addition, the invention also provides an application of the titanium dioxide-based catalyst in catalytic ozonation of toluene. The titanium dioxide-based catalyst provided by the invention can efficiently catalyze VOCs at low temperature, especially has 100% catalytic activity at 75 DEG C, and realizes low-temperature removal of toluene.

The utility model relates to the technical field of wastewater treatment equipment, and particularly discloses a catalytic ozonation pond device for wastewater treatment, which comprises a wastewater treatment pond body provided with a cover plate at the top, an exhaust pipe is arranged on the cover plate, and the interior of the pond body is divided into at least two ozonation ponds which are connected in series for use. An ozone catalyst packing layer is arranged in the middle of each grid of ozone oxidation pond, the ozone oxidation pond comprises a water inlet end ozone oxidation pond connected with a water feeding pipe and a water outlet end ozone oxidation pond connected with a water discharging pipe, and a perforated branch pipe connected with the water feeding pipe is arranged at the bottom in the water inlet end ozone oxidation pond; a rectification part is arranged between every two adjacent ozone oxidation ponds, is communicated with the upper part of the front ozone oxidation pond and is communicated with the bottom of the rear ozone oxidation pond; the water discharging pipe is connected with the water feeding pipe through an ozone dissolved gas pipe which is also connected with an ozone generator. Ozone enters the ozone oxidation pond in the form of ozone-containing water, the ozone and the wastewater are mixed more uniformly, and the catalytic efficiency of an ozone catalyst is improved.

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 invention discloses a pharmaceutical wastewater treatment method, and relates to the field of wastewater treatment. Comprising the following steps: carrying out evaporation salting-out treatment on high-salt pharmaceutical wastewater in advance, adjusting water quality and water quantity of evaporation condensate water and general pharmaceutical wastewater in an adjusting tank, and precipitating in a primary settling tank; the wastewater enters a primary catalytic ozonation tank for oxidation treatment, enters a biochemical treatment procedure, enters a secondary sedimentation tank for sedimentation, and effluent enters a secondary catalytic ozonation tank for oxidation treatment and enters an activated carbon filter tank for treatment. Aiming at the characteristics of high salinity, high ammonia nitrogen concentration and high toxicity of pharmaceutical wastewater, the salt concentration is reduced by adopting evaporation salting-out treatment, and the biodegradability is improved by utilizing oxidation treatment of the first-stage catalytic ozonation pond, so that the subsequent biochemical treatment efficiency is high, and a large amount of organic matters are decomposed; and a secondary ozone catalysis tank and an activated carbon filter tank are subsequently adopted to remove residual pollutants in the wastewater, so that the COD (Chemical Oxygen Demand), ammonia nitrogen, total phosphorus, total nitrogen and suspended matter concentration of effluent are low, and the effluent can stably reach emission indexes.

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.