51results about How to "Improve the efficiency of dissolved air" patented technology

The present invention relates to the technology of chemical reactor. The equipment includes transmission mechanism, pin wheel, aerator, liquid sprayer, slurry compounding device, light phase skimmingdish and decanter. The present invention has composite pin wheel stirrer and thus the small start power consumption, efficient shearing aeration and chemical dispersion and high mass-transferring andreaction efficiency. In the present invention, vortex centrifugation is applied to complete simultaneous clarification, floatation and separation. The present invention may be used in neutralization,oxidation, reduction, chemical reaction, stripping, etc.

The invention discloses an air floatation device and belongs to the field of water treating equipment. The air floatation device comprises a micro nanometer bubble generation device, a micro nanometer bubble generator, an air control valve and an air floatation tank, wherein a water inlet tube, an air inlet tube and a water outlet tube are arranged on the micro nanometer bubble generation device, the water inlet tube is used for leading in water, the air control valve is connected onto the air inlet tube, an opening for being connected with an air source is arranged on the air control valve, and the water outlet tube is connected with the micro nanometer bubble generator. A water inlet is arranged on the micro nanometer bubble generator which is arranged in the air floatation tank. The air floatation device is a forcing dissolved gas air floatation device, uses the micro nanometer bubble generator to produce small bubble water and improves air dissolution efficiency. Simultaneously produced small bubbles have negative charge, have good adsorption effect on greasy dirt and particles and greatly improve air floatation effect. The whole device does not need to increase extra operating cost, and the air floatation device is a revolutionary improvement compared with a traditional air floatation method.

The invention discloses a gas dissolving device, and in particular relates to a gas dissolving device capable of combining pipe flow and vortex. The gas dissolving device capable of combining pipe flow and vortex is long in water flow path, small in air bubbles, large in gas solubility, high in gas dissolving efficiency, simple in structure and easy in equipment maintenance; and the gas dissolving device comprises a pipe flow gas dissolving tank and a vortex gas dissolving tank, wherein the pipe flow gas dissolving tank comprises a barrel, an inner ring sintering metal micropore pipe, an outer ring sintering metal micropore pipe, a spiral guide plate, an upper press plate, a lower support plate, a pipe flow tank air inlet pipe, a pipe flow tank water inlet pipe and a pipe flow tank water outlet pipe; and the vortex gas dissolving tank comprises a combined barrel, a top cover, an umbrella-shaped guide plate, a vortex tank water inlet pipe, a vortex tank water outlet pipe and a vortex tank air inlet pipe.

The invention relates to an unpowered microbubble water device. The unpowered microbubble water device comprises a dissolved air tank and a dissolved air releaser. The water inlet of the dissolved air tank is used for being connected with a water pipe for the tap water with pressure larger than 0.15 MPA. A groove which is opposite and adjacent to the spray opening of a spray nozzle is formed in the dissolved air tank, wherein the size of the groove is matched with the size of the spray opening of the spray nozzle. A plurality of flow limiting holes are formed in a flow limiting piece in the dissolved air releaser. By ingeniously utilizing the pressure of the tap water itself and the groove matched with the spray opening, the high turbulence degree can be achieved for water flow entering the groove, the liquid film thickness of one side of an air and liquid phase interface is reduced, the mass transfer coefficient is increased, the total area of the air and liquid phase interface is enlarged, and therefore the air dissolving efficiency can be obviously improved; by means of the flow limiting piece where multiple holes are distributed, the water in the unit volume is dispersed, air release is sufficient, and the bubble water outlet effect is good. Thus, under the compression-pump-free condition, the microbubble water can be obtained as well by improving the air dissolving efficiency and the air release sufficiency, and therefore the unpowered microbubble water device which is small in size, low in cost and free of noise is provided for people.

The invention discloses a method and device for continuously preparing high-concentration ozone water. The method comprises the steps that an ozone water generation tank is vacuumized and then filled with ozone gas; water enters an elliptical rotary spray head arranged in the ozone water generation tank through a booster pump and is sprayed into an ozone generation tank to efficiently dissolve the ozone gas; ozone water in the ozone water generation tank is kept within a set liquid level range, impurity gas accumulated on the upper portion of the ozone water generation tank is regularly exhausted, and continuous generation of the high-concentration ozone water is achieved. The method is simple, low in equipment cost and easy to achieve and can be implemented by adopting a common commercialized ozone gas generation device. Compared with a conventional ozone mixing and gas dissolving method, the method has the advantages of being high in gas dissolving efficiency, low in energy consumption, free of loss in ozone gas, high in prepared ozone water concentration and the like. According to the method, usage of an ozone decomposer is avoided, the equipment is simple, and the high-concentration ozone water can be massively and continuously prepared.

The invention relates to a swirling aggregation air flotation degreasing column, which comprises a lower air flotation column, an upper air flotation column and a swirling dissolved air tank, wherein a swirling air flotation oil collection tank, a floating residue discharging port, a swirling air flotation column outer cylinder, a center swirling air flotation column, a water distribution pore plate, a support pipe, an egg tray shaped disk sheet aggregation filler, a support pipe and an aggregation inclination plate filler are arranged in the upper air flotation column, the swirling air flotation column outer cylinder is connected to the swirling dissolved air tank, a baffle, a dissolved air release device, a separation plate, a sludge collection cone cylinder, a water purification area, a water outlet, a dissolved air water outlet and a venting port are arranged in the lower air flotation column, the dissolved air release device is communicated to the swirling dissolved air tank, the bottom portion of the sludge collection cone cylinder is provided with a precipitation cylinder, the bottom portion of the precipitation cylinder is communicated to the water inlet of the center swirling air flotation column, the precipitation cylinder is communicated to the water purification area, the water purification area is communicated to the lower air flotation column, and the dissolved air water outlet is connected to the swirling dissolved air tank. According to the present invention, the swirling aggregation air flotation degreasing column has advantages of simple structure, high degreasing efficiency, high suspended solid removal efficiency, fine and uniformly-dispersed air bubbles, and the like.

The invention discloses a gas dissolving device for improving gas dissolving efficiency of wastewater treatment by using electromagnetic shear field. The device comprises a shell; a plurality of electrode plates are distributed in the shell side by side; the electrode plates are alternately divided into two groups; and the two groups of electrode plates are equipped with electric connecting lines. The device also comprises an EM module pulse power system comprising an L-C resonant constant current charging circuit, a two-level charge and discharge circuit, a pulse width modulator and a pulse compression circuit. The invention uses magnetic shear field (electromagnetic shear narrow pulse) to act on cluster structure of water molecules and pollutants in wastewater, change the physical and chemical properties of wastewater, and improve the efficiency of gas dissolving and reaction speed of chemical and biochemical reaction; under the same efficiency, the device can lower energy consumption by more than 50%; besides, the device has a volume only 1 / 10 of a gas dissolving device in the prior art, thus saving a lot of raw materials.

The invention discloses floatation equipment which relates to the field of mechanical equipment and comprises a barrel, a mud bucket and a gas dissolving device, wherein the barrel is provided with a water inlet and a water outlet, the mud bucket is arranged at the bottom of the barrel and is provided with a mud discharge hole, a drossing device and a slag hole are arranged on the top of the barrel, an inclined plate section is arranged in the barrel and is arranged between the water inlet and the water outlet, a micro-nano bubble generator is arranged between the inclined plate section and the water outlet and is connected with the gas dissolving device, and a micro-nano bubble generating device is arranged in the gas dissolving device. Due to the dual actions of an inclined plate and the gas dissolving device, large-particle flocculating constituents settle to form sludge, and small-particle flocculating constituents float on the water surface; clear water after dual solid-liquid separation is high in recycling standard; since the micro-nano bubble generator is utilized, not only is the gas dissolving efficiency improved, but also the adsorption effect can be realized on grease dirt and other substances, and the floatation effect is greatly improved.

The invention provides gas dissolving equipment, and relates to the technical field of gas-liquid enhanced mass transfer and microbubble generation, the gas dissolving equipment comprises a jet flow nozzle, a tank body assembly and a water outlet pipe which are connected and communicated in sequence, the inner diameter of the jet flow nozzle is reduced from the direction away from the tank body assembly to the direction close to the tank body assembly, and a gas inlet pipe is arranged on the jet flow nozzle; the tank body assembly comprises an outer tank body and a hollow inner cylinder arranged in the outer tank body, the hollow inner cylinder is arranged in the axial direction of the outer tank body, and the water outlet pipe is installed at the tail end of the outer tank body. By means of core components such as the jet flow nozzle, the outer tank body and the hollow inner cylinder, gas dissolving is strengthened in gas-liquid contact strengthening modes such as jet flow breaking, liquid level impacting, jet flow entrainment and inner cylinder circulation, and the gas dissolving equipment has the advantages of being compact in structure, small in occupied area, high in gas dissolving efficiency, not prone to being blocked, low in operation and maintenance cost and the like; the device can be independently used as a dissolved air water preparation device, and can also be used for generating high-quality microbubbles in a connection dissolved air release manner.

The invention provides an efficient dissolved air flotation machine. The air flotation machine mainly comprises two air dissolving systems, an oil receiving pool, a mud scraping system and an output pump. A mud scraping machine of the air flotation machine adopts a stainless steel inner liner, a framework and a nylon chain, the strength of the chain is enhanced, and electric sparks are not easily generated. The air flotation machine is provided with an oil storage pool, and the technological process is reduced. The air flotation machine initiates double air dissolving systems, so that energy is saved, the processing effect can be improved, and the spare air dissolving system exists during breakdown maintenance. The air dissolving system of the air flotation machine are additionally provided with an air intake flow meter and an adjusting valve, so that the function of automatic adjustment of a gas liquid ratio can be realized, and the air dissolving efficiency is improved. An air dissolving tank of the air flotation machine is additionally provided with an automatic air exhausting device, so that the air dissolving effect is always kept in the best position. The sump oil and sludge systems of the air flotation machine share one pump for outputting, the cost is reduced, and the space is saved.

The invention belongs to the technical field of sewage treatment equipment and discloses a spiral jet aerator. The spiral jet aerator is used for solving the problem that the air dissolution efficiency is low in the conventional aerator. The spiral jet aerator disclosed by the invention comprises a water pump, wherein the water pump is connected with an aerator; the aerator comprises an air suction chamber and a nozzle; the nozzle is sleeved by one end of the air suction chamber; the other end of the air suction chamber is connected with a throat tube; the air suction chamber is further communicated with an air suction tube; spiral guide plates are arranged inside the nozzle; multiple through holes are formed in nozzles between adjacent spiral guide plates; the air suction tube is connected with at least two air inlet branch tubes; the air inlet branch tubes sleeve the periphery of the nozzle; the air inlet branch tubes are uniformly provided with air inlets of which the number is the same as that of the through holes; and the air inlets are communicated with the through holes by virtue of pipelines. The spiral guide plates are arranged inside the nozzle, and the air inlet branch tubes are arranged at the periphery of the nozzle, so that air is introduced into the nozzle, and the air can be rapidly dissolved in water. Therefore, the air dissolution efficiency of air is improved, and the sewage treatment effect is improved.

The invention provides a dissolved air tank with an adjustable vapor liquid ratio. A dissolved air pump, electric control valves, a circulating water flowmeter, a brake valve, a check valve and a dissolved air tank are connected in series through a pipeline of an air floating system; a pipeline at the outlet side of each dissolved air pump is connected in series with the electric control valve, and then connected with a relief pipe; a water inlet pipe is connected in series with an online turbidity meter and a water inlet flowmeter; an automatic air inflow regulating valve and a vacuum pressure sensor are connected with the pipeline at the inlet side of the dissolved air pump; a pressure sensor and an automatic air exhausting device are arranged at the upper part of the dissolved air tank. The flowmeter and the control valves are additionally arranged in the dissolved air system of the air floating machine, and meanwhile the online turbidity meter and the flowmeter are mounted at the water inlet side, so that the vapor liquid ratio can be automatically adjusted to be adapted to the water inlet quality and the flow change, and the air dissolving efficiency can be improved.

The invention belongs to the field of safety production and environment protection, and particularly relates to a high-pressure pipeline gas and liquid reactor for hydrogen sulfide treatment of an oilwell and a treatment method thereof. The high-pressure pipeline gas and liquid reactor consists of a gas supply unit, a dissolved gas mixing reaction unit and an automatic control unit, wherein the gas supply unit is connected with the dissolved gas mixing reaction unit, and is used for supplying required oxygen for the dissolved gas mixing reaction unit; the automatic control unit is used for detecting the contents of hydrogen sulfide and dissolved oxygen in each node of the dissolved gas mixing reaction unit, and controlling the supply amount of oxygen in each node of the dissolved gas mixing reaction unit. The high-pressure pipeline gas and liquid reactor has the advantages that the equipment is compact, and the land occupation area is small; the automation degree is high, and the maintenance is convenient; the treatment is performed at high pressure, the pressure-relief releasing and pressurizing transportation process of the hydrogen sulfide gas is not needed, and the energy consumption is low; by adopting the multiple stages of gas supply, the gas is uniformly distributed, the gas dissolving efficiency is high, the utilization rate of the gas is high, the treatment effect isgood, and the removal rate of the hydrogen sulfide reaches 99.5% or above; the high-pressure pipeline gas and liquid reactor can be widely applied into the hydrogen sulfide treatment technology of the oil well.

The invention discloses a gas dissolving system for transformer insulating oil. The system comprises a gas dissolving cavity, a conveying pipe, an oil outlet pipe, a heating belt, a thermocouple, a temperature control unit, capillary tubes, a one-way valve, an airflow control unit, oil pipes and an oil pump, wherein the conveying pipe is inserted from the bottom of the gas dissolving cavity; one side of the oil outlet pipe is connected with the bottom of the gas dissolving cavity, and the other side of the oil outlet pipe is connected with a test oil tank through one oil pipe; the temperaturecontrol unit is connected with the heating belt and the thermocouple separately and used for receiving temperature information collected by the thermocouple and sending a temperature control instruction to the heating belt; the airflow control unit is used for controlling the opening and closing of the one-way valve; and the input end of the oil pump is connected with the test oil tank, and the output end of the oil pump is connected with the conveying pipe through one oil pipe. According to the invention, oil samples with different dissolved gas components and contents can be rapidly and conveniently prepared, so the equipment for detecting the dissolved gas components of insoluble transformer oil can efficiently and accurately obtain an oil sample to be detected. The invention further provides a gas dissolving method for transformer insulating oil.

The invention belongs to the technical field of sewage treatment and is used for solving the problem of low gas dissolution efficiency in the existing aerator. The invention relates to a high-efficiency energy-saving stirring aerator for cable production sewage treatment, which comprises a drive motor, wherein the drive motor comprises a shell, a stator assembly and a rotor assembly; the rotor assembly comprises a motor shaft; the motor shaft is connected with a rotating shaft; the lower end of the rotating shaft is connected with a dispersion disk; the lower part of the dispersion disk is provided with a gas distribution pipe; a plurality of cambered diversion strips are uniformly arranged on the upper surface of the dispersion disk; the lower surface of the dispersion disk is provided with a screw blade; the bottom surface of the screw blade is provided with a plurality of diversion holes; and the screw blade is provided with a perforated through hole. The aerator has the characteristic of high gas dissolution efficiency.

The invention provides an ozone adding device used in a sewage treatment process. The device comprises a dissolved air tank and an ozone treatment tank, and the dissolved air tank and the ozone treatment tank are connected through a water inlet pipe; a water inlet of the dissolved air tank is connected with a sewage pipe, an ozone recovery assembly is further arranged above the sewage pipe, an ozone adding pipe is arranged in the ozone treatment tank, and the ozone recovery assembly is connected with the ozone adding pipe; a sewage inlet pipe is further connected with a jet device, the jet device is connected with an air inlet pipe, and an included angle smaller than 90 degrees is formed between the axis of the air inlet pipe and the axis of the jet device body. According to the ozone adding device used in a sewage treatment process, the jet device of which the inner wall is provided with a baffle plate which is of a spiral structure and protrudes inwards is provided. Sewage rotates under the action of the threads, disturbance of fluid near the inner wall face of the jet device is enhanced, and ozone gas fed into the jet device through the ozone feeding pipe can be taken away in time by liquid moving in a rotating mode.

The invention discloses a three-stage air dissolving device for micro-nano air floatation, and belongs to the technical field of environment-friendly water treatment. The device comprises a tank body, a flow guide mixing water inlet pipe is arranged in the tank body, the flow guide mixing water inlet pipe is divided into two sections which are respectively arranged inside and outside the tank body, and a plurality of vertical water distribution pipes are arranged at the tail end of the flow guide mixing water inlet pipe in the tank body. A plurality of vertical water distribution pipes are arranged at the tail end of the flow guide mixing water inlet pipe in the tank body, air holes are formed in the tops of branch pipes, a plurality of transverse seams are formed in the side walls, projection has a certain angle, liquid forms a water curtain through the transverse seams and makes full contact with a gas layer on the upper portion of the tank body, the gas-liquid interface updating frequency is high, and gas dissolution is accelerated; a gas inlet is formed in the flow guide mixing water inlet pipe arranged outside the tank body, gas is primarily mixed and dissolved in the flow guide mixing water inlet pipe, redundant gas is discharged into a gas layer in the pipe through a gas hole in the top end of the vertical water distribution type pipe, and the gas dissolving efficiency can be effectively improved through three-stage gas dissolving arrangement and a water curtain water mode.

The invention relates to the technical field of air dissolving devices for sewage treatment, in particular to an efficient microbubble air dissolving device which comprises a tank body, a water inlet pipe and an air inlet pipe are arranged at one end of the tank body, a water outlet pipe is arranged at the end, away from the water inlet pipe, of the tank body, a rotating rod is rotationally connected to the middle of the end face of the tank body, and a plurality of spiral fan blades are fixedly connected to the rotating rod; high-pressure water flow in linear motion in the pipe body can be changed into water flow in high-speed spiral motion, the contact liquid level between gas and the water flow is increased, and the larger the contact liquid level between the gas and the water is, the higher the efficiency of the gas in the water is, namely the shorter the time of the gas in the water is, the larger the quantity of the gas in the water is, the using effect of the dissolving device is improved, meanwhile, the spiral fan blades are driven by high-pressure water flow to continuously rotate, and a power assembly does not need to be additionally arranged for additionally driving the spiral fan blades, so that the device is more energy-saving, and the use cost of the device is reduced.

The invention belongs to the technical field of sewage processing, and is used for solving the problem of low efficiency of gas solution in the current aeration machine. The stirring aeration machine comprises a driving motor, the driving motor comprises a casing, a stator assembly and a rotor assembly, the rotor assembly comprises a motor shaft, a rotating shaft is connected to the motor shaft, a dispersion plate is connected to the lower end of the rotating shaft, a gas distribution pipe is arranged at lower part of the dispersion plate, multi-strip arc diversion strips are uniformly arranged on the upper surface of the dispersion plate, the lower surface of the dispersion plate is a plane which enables inclination to a horizontal plane, a spiral blade is arranged on the lower surface of the dispersion plate, several diversion apertures are arranged on the lower bottom of the spiral blade, and a through hole is opened on the spiral blade. The stirring aeration machine has high efficiency of gas solution, bubbles capable of solving with water can be discharged rapidly, and efficiency of gas solution can be increased.

The invention discloses a wool scouring wastewater treatment method. The method comprises the following steps: wool fat recycle and treatment; pH adjustment treatment, air flotation treatment, anaerobic biochemical treatment, aerobiotic biochemical treatment, hydrolysis acidification pool treatment, and entering of discharged water to a three-stage A / O (anoxic / oxic) pool; sludge treatment; discharging of sludge in a one-stage air flotation pool, a two-stage air flotation pool, the hydrolysis acidification pool and the A / O pool into a sludge concentration pool to perform concentration, flowingback of the liquid supernatant of the sludge concentration pool to an adjustment pool, dehydration of the sludge after concentration, and outward transport of mud cakes for disposition. The method provided by the invention can be used for effectively removing high-concentration organic matter in wool scouring wastewater.

The invention discloses a sterilizing and air dissolving device for sewage treatment. The sterilizing and air dissolving device comprises a device body. The device body mainly comprises a sewage inlet, a sewage outlet, an air compressor and an aeration plate. The sewage inlet extends into the device body and is connected with a universal connector. A spray nozzle is connected with the bottom of the universal connector rotationally. A plurality of spiral flow guide grooves are formed in the spray nozzle. A first overflow tank is arranged in the bottom of the device body fixedly. A second overflow tank is arranged in the first overflow tank. A third overflow tank is arranged in the second overflow tank. A rotating shaft is arranged in the device body vertically. Sliding plates are arranged in the first overflow tank, the second overflow tank and the third overflow tank. First pores are formed in the sliding plates. The sterilizing and air dissolving device has the advantages that the spray nozzle rotates without exogenetic force, so that air dissolving quantity is increased, and energy sources are saved; sewage in the device can contact with air in the device in forms of water curtains and fountains, so that air dissolving efficiency of the sewage is improved greatly, and later sewage treatment is facilitated.

The invention belongs to the technical field of sewage treatment and discloses a rapid-separation aerator dispersion disc for cable production sewage treatment. The rapid-separation aerator dispersion disc is used for solving the problem of the existing aerators that the efficiency of gas dissolving is low. A plurality of arc-shaped flow guiding strips are uniformly arranged on the upper surface of the dispersion disc disclosed by the invention, a stirring device is arranged on the lower surface of the dispersion disc and comprises a conical base, the bottom face of the base is upwardly connected to the lower surface of the dispersion disc, stirring vanes are connected to the external wall of the base, the central axis of the base is located on the plane where the stirring vanes are located, and a plurality of run-through through holes are further formed in each stirring vane. According to the rapid-separation aerator dispersion disc for cable production sewage treatment, disclosed by the invention, small bubbles dissolved with water can be exhausted in time, subsequent bubble crushing is facilitated, the efficiency of gas dissolving is increased, and thus, the effect of sewage treatment is improved.

The invention provides a device and a method for deoiling by entraining, refluxing and reusing multistage baffling microbubble flotation, and relates to the technical field of deoiling of oilfield produced water. The multistage baffling microbubble flotation oil removal device for entrained air backflow recycling comprises an air flotation tank, a dissolved air pump and an electric control system, and a vortex reactor, a T-shaped water passing opening and an adjustable oil collecting groove are arranged in the air flotation tank; a nitrogen pressure automatic balancing pipeline system, a nitrogen entraining return pipeline, a dissolved air water replenishing pipeline, a dissolved air water return pipeline and an oil-containing raw water extraction pipeline are arranged outside the air floatation tank; the air dissolving efficiency is improved and the particle size of microbubbles is reduced by controlling the inlet and outlet pressure of an air dissolving pump; the vortex reactor slows down the bubble gathering and floating speed and prevents short flow; according to the nitrogen pressure automatic balancing pipeline system, a stable gas phase space can be formed at the inner top of the air floatation tank, the liquid level is kept stable, separated nitrogen serves as a gas source of the gas dissolving pump to be recycled, and the consumption of the nitrogen is greatly reduced.

The invention provides an efficient dissolved air flotation machine. The air flotation machine mainly comprises two air dissolving systems, an oil receiving pool, a mud scraping system and an output pump. A mud scraping machine of the air flotation machine adopts a stainless steel inner liner, a framework and a nylon chain, the strength of the chain is enhanced, and electric sparks are not easily generated. The air flotation machine is provided with an oil storage pool, and the technological process is reduced. The air flotation machine initiates double air dissolving systems, so that energy is saved, the processing effect can be improved, and the spare air dissolving system exists during breakdown maintenance. The air dissolving system of the air flotation machine are additionally provided with an air intake flow meter and an adjusting valve, so that the function of automatic adjustment of a gas liquid ratio can be realized, and the air dissolving efficiency is improved. An air dissolving tank of the air flotation machine is additionally provided with an automatic air exhausting device, so that the air dissolving effect is always kept in the best position. The sump oil and sludge systems of the air flotation machine share one pump for outputting, the cost is reduced, and the space is saved.

The invention discloses sewage treatment equipment which is box-type equipment; an air floatation box (1), a volcanic rock filler box (2), a biological filter material filler box (3), an anthracite filler box (4) and a clear water box (5) are arranged in a box body in the water flow direction, and a water inlet (6) is formed in one side of the air floatation box (1) and connected with a water inlet pipe; a water outlet (7) is arranged on the bottom, on the same side of the water inlet, of the clear water box (5), and a dissolved air pump (8) is arranged on one side of the air floatation box (1); a bubble dispersing disc and the clear water box (5) are respectively connected to the bottom of the air floatation box (1); a backwashing water inlet area (9) is arranged on one side, opposite tothe water inlet (6), of the box body; and a backwashing water inlet pipe (10) is arranged at the bottom of the backwashing water inlet area (9). The equipment disclosed by the invention can be mountedon a bank close to a sewage outlet, treats domestic and industrial sewage discharged from a sewage outlet by utilizing the combination of air floatation and multiple filtering fillers, has the effects of removing suspended matters, degrading ammonia nitrogen, phosphorus and organic matters and the like, improves the water quality and then discharges the sewage into a river channel.

The invention relates to a vertical air dissolving device. The vertical air dissolving device comprises an upright air dissolving pipe, wherein the upper end and the lower end of the air dissolving pipe are sealed through flanges; a water inlet is arranged at the upper part of the air dissolving pipe; a water outlet is arranged at the lower part of the dissolved air pipe; an air inlet is arrangedon the air dissolving pipe; the vertical air dissolving device also comprises a residual air collecting unit which is fixedly arranged in the air dissolving pipe and comprises a vertical pipe and a transverse pipe assembly; the transverse pipe assembly is arranged by crossing of a plurality of transverse pipes which mutually communicate with each other at a center position; air inlets are denselydistributed on the vertical pipe and the transverse pipes; the outer end of each transverse pipe is fixedly arranged on the inner wall of the air dissolving pipe; the cross center of the transverse pipe assembly communicates with the vertical pipe; an air storage cover is arranged at the top part of the air dissolving pipe and fixedly connected with the air dissolving pipe through a flange; an airstorage cavity is arranged between the air storage cover and the flange; the top part of the vertical pipe penetrates through the flange and extends into the air storage cavity; and an exhaust unit is arranged at the top end of the air storage cover. According to the invention, redundant air in the air dissolving pipe is collected, and the air dissolving efficiency is improved.

The invention belongs to the technical field of sewage treatment for solving the problem that the existing aerator is low in gas dissolving efficiency. The efficient gas-dissolving stirring aerator for cable production sewage treatment provided by the invention comprises a driving motor which is connected with a rotary shaft by virtue of a speed reducer, wherein a dispersing disc is connected to the lower end of the rotary shaft and a gas distributing pipe is arranged below the dispersing disc. The stirrer is characterized in that a plurality of arc-shaped guide bars are uniformly arranged on the upper surface of the dispersing disc, a spiral blade is arranged on the lower surface of the dispersing disc, a plurality of guide holes are formed on the bottom face of the spiral blade, and a penetrating through hole is formed on the spiral blade. The stirrer provided by the invention has the characteristic of being high in gas dissolving efficiency and has the effect of improving the sewage treatment.