97results about How to "Improve oxygenation capacity" patented technology

The invention relates to an active composite suspended filler, which is applied to the technology of biochemical treatment of organic wastewater, and discloses a porous support filler formed by a carrier basic materials and functional assistant materials. The porous support filler is in a through-hole spheroidal body or a through-hole cylindrical body, and one layer of porous active powder material layer is bonded on an outer surface of the through-hole spheroidal body or the through-hole cylindrical body. The active composite suspended filler is an inorganic suspended filler, has an uneven surface and roughness height; and pores with different sizes are distributed on the filler and are shaped like a honeycomb. The filler not only has high adsorption performance on harmful substances and dissolved oxygen, but also can form different dissolving intensity, is beneficial to improving processing efficiency for removing COD (Chemical Oxygen Demand) and ammonia nitrogen, and will be a novel high-efficient filler.

The invention relates to improvement on an inverted umbrella-shaped aeration machine of a surface aeration apparatus for sewage treatment. The inverted umbrella-shaped aeration machine is characterized in that a rotary shaft is in a hollow structure, and at least the aeration is carried out in the water through an air distributing tube or a micropore aeration device in a terminal area, so that the inverted umbrella-shaped aeration machine is oxygenated by the swathed air generating whirl through rotation and oxygenates water by more air forcibly injected air, and the injected air is rotated through an impeller to stir and cut bubbles aerated into the water, particularly, the bubbles are cut through a sawtooth to ensure that the bubbles are finer to form micro-bubbles, thereby greatly improving the oxygenate capacity and the dissolved oxygen concentration of the inverted umbrella-shaped aeration machine and the deep oxygenation of the water body.

The invention relates to an improvement on an oxidation ditch guide flow device, which is characterized in that: the upper end of a flow deflector is movably arranged on the pond wall of an oxidation ditch, while the lower end can be adjusted according to swing angles of the upper end; and the flow deflector also can move forward and backward. Firstly, an adjustable flow deflector can play a roleof the flow deflector to the maximum extent and avoid the defects caused by fixing and non-adjustment of the flow deflector; moreover, when the flow deflector is not needed, the flow deflector can belifted, so that the flow deflector does not become a burden because of the setting; secondly, the depth and the width of the oxidation ditch can be increased, so that the floor area of the oxidation ditch is reduced, and the land acquisition cost and the floor area are saved; thirdly, by matching of the flow deflector, the number of started aeration equipment can be reduced as required, and the operating energy consumption is lowered; and finally, the oxidation ditch is always ensured to operate in the best working state, and by the setting of meters such as an on-line current meter, a dissolved oxygen meter and the like and the automatic control of a computer, the oxidation ditch can fully automatically operate in the best working state.

The invention relates to a water agitating surge machine. The water agitating surge machine mainly comprises a motor, a reducer casing, a floating body, vanes and fixing rods, wherein the motor is vertically installed on the reducer casing, the reducer casing mainly comprises a casing body, a reduction gear, a bearing and an output shaft, the output shaft downwards extends through a sealed chamber to drive the floating body to rotate with the vanes, the whole machine floats on the water by the aid of the floating body, and the motor and the reducer casing are fixed by the fixing rods to float on the water without rotation. The floating body is a hollow shell which is formed by blow molding, and the floating body is in a shape of approximate square, approximate rectangle, approximate triangle or circle and the like.

The invention relates to a multistage bioleaching reactor process and equipment for sludge treatment. The equipment comprises bioleaching reactors of multiple stages, a sludge thickening pool, aeration devices, an internal sludge reflux pump, an external sludge reflux pump, a dewatering pump, a box type press filter and the like. Composite microbial flora mainly comprising acidophilic thiobacillus, acid-resisting heterotrophic bacteria and the like is utilized, sludge is subjected to acidification in the bioleaching reactors of multiple stages under the condition that the composite microbial flora is matched with nutritional substances in an aerobic environment with appropriate temperature, finally, the pH value is decreased to be smaller than 3, heavy metals in the sludge are transferred into an aqueous phase, and mud cakes with moisture content lower than 60% can be obtained through press filtering and dewatering. The aeration devices adopt flow jetting aeration or centrifugal flow diffusing aeration, so that the power consumption is decreased by over 30% compared with that of air blasting aeration. After the sludge is subjected to bioleaching reaction, no more odors are generated, pathogenic microorganisms of over 99% are killed, the dewatering is easy, the moisture content of the mud cakes is lower than 60% in the case of not adding any medicaments, and the amount of the sludge is reduced greatly.

The invention discloses an automobile oxygenation component which comprises a gas inlet, a gas inlet pipeline, baffles, a first filter net, a second filter net, a third filter net, a conical dust collector, an oxygen molecular sieve, an air purifier, a gas pump and an air nozzle, wherein the gas inlet is formed in the gas inlet pipeline; the baffles are staggered on the inner side of the gas inlet at an interval; a snakelike channel is formed between the baffles; the first filter net is arranged at the lower end of the baffle on the inner side of the gas inlet; the conical dust collector is arranged at the lower end of the first filter net and communicated with a gas inlet pipe; the second filter net and the third filter net are sequentially arranged on the gas inlet pipeline on the inner side of the baffle; the air purifier is arranged on the gas inlet pipeline on the inner side of the third filter net and communicated with the air nozzle in an automobile through a pipeline; a gas pump is arranged on the pipeline between the air purifier and the air nozzle; and the gas inlet pipeline between the third filter net and the air purifier is connected in parallel with the oxygen molecular sieve. The automobile oxygenation component disclosed by the invention has the advantages of convenient use, good purifying effect and strong oxygenation ability.

The invention relates to an impeller of an aerator, which comprises a hollow shaft, a second plate body and / or a third plate body that are arranged alternately and uniformly along the circumference of the hollow shaft, wherein the plate surface of the second plate body is axially parallel with the hollow shaft, the axial included angle between the plate surface of the third plate body and the hollow shaft is less than 90 degrees, the circumferential position of the first plate body is provided with a V-shaped notch with outward opening, the second plate body is arranged at one side of the V-shaped notch, the edge of upper end of the second plate body is higher than the plate surface of the first plate body, moreover the included angle between the edge and the plate surface of the first plate body is Alpha, two sides of the third plate body that the plate surface is triangular are respectively connected with the edge of upper end of the second plate body and the other side of the V-shaped plate body, a water-casting opening is formed between the second plate body and the third plate body, when the impeller rotates, the stirred water body is cast from the water-casting opening, the water body is wrapped into the air during casting, and contacts with the air sufficiently, thereby reaching the effect of aeration to the max extent.

The invention discloses a platform type microbubble functional ship. The platform type microbubble functional ship comprises a ship body, and an underwater platform and a microbubble generator which are arranged at the bottom of the ship body, wherein the underwater platform is provided with supporting columns; the supporting columns are connected with the ship body; the microbubble generator comprises a fixed pipe, a motor, air exhausting impeller and a bubble discharger; one end of the fixed pipe is connected with the ship body, and the other end of the fixed pipe is connected with the motor; the motor is connected with a power supply and the air exhausting impeller; the air exhausting impeller is located in the bubble discharger; the bubble discharger is connected with the fixed pipe; an air feeding hole is formed in the fixed pipe; the air feeding hole is connected with an air compressor and an air feeding pipe which are mounted on the bubble discharger and the ship body. Microbubbles generated by the platform type microbubble functional ship are high in oxygen enrichment capacity and can carry drugs, to realize oxygen enrichment in water from bottom to top; the bubble discharger is mounted at the bottom of the ship body and can move along with the ship and stir the water to enable the water to be circulated up and down, so that the water quality is improved, and the water is activated to supply a better growing environment to fish and shrimps in river water or lake water.

The invention relates to a biotin amino acid shampoo, and belongs to the field of daily chemicals. The biotin amino acid shampoo comprises an amino acid series surfactant, a conditioner, a preservative, purified water, a lemon extract, a thickening agent, biotin nutrient and natural plant nutrient. In the biotin amino acid shampoo, the amino acid series surfactant is used as a main component, and beneficial components such as biotin, natural nutrient and the like are added, so that the shampoo has the advantages of natural health and the like.

The invention relates to aquatic water autonomous cruise multistage aerobic equipment. The equipment comprises a bearing driving device, an aeration device, a detection control device and a power supply storage device; the bearing driving device comprises a floating platform, driving components and a direction sensor, and the driving components are uniformly installed on the edge of the floating platform; the direction senor is installed on the floating platform and electrically connected with the detection control device; the aeration device comprises an integration box, a miniature oxygen generator, an air pump, a water pump, a water pump pipe, a return pipe, a connecting shaft and a spray head; the integration box is installed on the upper portion of the floating platform, the integration box, the air pump and the miniature oxygen generator are connected in sequence, the water pump pipe, the return pipe and the connecting shaft penetrate through the floating platform separately, thewater pump pipe, the water pump, the integration box and the return pipe are connected in sequence in the water flow direction, and the connecting shaft is connected with the integration box; the spray head is connected with the water pump. The equipment can achieve multistage aeration according to the anoxia grade. The invention further relates to an aquatic water autonomous cruise multistage aerobic method, and belongs to the technical field of aquaculture.

The invention belongs to the field of environmental engineering and discloses a device and method for treating ammonia nitrogen wastewater by using a dioxygen biological filler. The device is composed of a reactor, a water inlet pipe, a water outlet and a mud discharging opening, wherein the reactor is divided into an anoxic zone, an aerobic zone and a precipitation zone by two adjustable controlplates, and the bottoms of the three zones are communicated; the inlet of the water inlet pipe is located in the anoxic zone, and one end of the water inlet pipe is connected with a water inlet pump;a stirrer is installed at the lower middle part of the anoxic zone, and one end of the stirrer is connected with a pressure regulator; the aerobic zone is adjacent to the anoxic zone, and a sphericalsuspension filler is installed in the middle of the aerobic zone; an aeration device is installed at the bottom of the aerobic zone, and the upper stream end of the aeration device is connected with a rotor flow meter and an air pump; and the precipitation zone is adjacent to the aerobic zone, the water outlet is located above the precipitation zone, and the mud discharging opening is located at the bottom of the precipitation zone. When the ammonia nitrogen wastewater is treated by using the device, the power and energy are saved, the sludge residual amount is small, and the ammonia nitrogenremoving rate in the ammonia nitrogen wastewater is high.

The invention discloses a movable oxygenation device which comprises a floating body, a first gas-water mixer and a second gas-water mixer, wherein the floating body is provided with a buoyancy force for floating at the fixed depth when the floating body is used for bearing total weight of the movable oxygenation device and is provided with a midline, fore and aft, a port and a starboard; the first gas-water mixer is used for pushing the floating body to move forwards and is arranged below the midline of the floating body; the air suction end of an air suction tube of the first gas-water mixer is led to the upper part of the floating body; the second gas-water mixer is used for pushing the floating body to retreat and is arranged below the midline of the floating body; the air suction endof an air suction tube of the second gas-water mixer is led to the upper part of the floating body; and the first gas-water mixer and the second gas-water mixer are respectively arranged at the ends near to the fore and the aft and select to work together. The movable oxygenation device is suitable for oxygenating a pond for cultivation.

The invention relates to a multifunctional surface aerator. The aerator is characterized in that long and short blades are distributed on the upper surface of an inverted-conical-surface body (7), the number of the long blades and the number of the short blades are even numbers, the height of the short blades is 1.1 times that of the long blades, the length of the short blades is half that of the inverted-conical-surface body, the length of the long blades is 1.1 times that of the inverted-conical-surface body, a certain included angle is formed between the outlet of the long blades and the inverted conical surface, the long blades are all distributed on the inverted conical surface and perpendicular to the inverted conical surface, and the short blades are evenly distributed on the inverted conical surface and one short blade is located between every two adjacent long blades. The long blade and short blade design form is adopted for the inverted umbrella blades, the plug-flow capacity of the aerator can be greatly improved, and the oxygen supply capacity of the aerator can not be influenced.

The invention discloses a turbine-type aeration machine, which comprises a controller, a motor, a frame, a height adjusting device, a main shaft and an impeller, a control signal output end of the controller is connected to the control signal input end of the motor, the frame is connected to the ground on a pool through the height adjusting device, a reduction box is arranged at lower part of the motor, the rotating shaft of the motor is connected to a main shaft in a transmission mode through the reduction box, the lower end of the main shaft is connected to the impeller, and the impeller is positioned under the water surface in the pool. The turbine-type aeration machine employs an inverted motor to provide the rotation power to the impeller, aeration machine structure is greatly simplified, the inverted umbrella-type impeller is employed so that oxygen in air can be fully dissolved and absorbed, oxygen transfer efficiency and oxygen charging capability are increased, so that work efficiency of a whole aeration machine is increased.

The invention improves an aeration rotary brush for water treatment, which is characterized in that a rotary brush blade is of a curve arc shape. Compared with the existing straight blade, the invention greatly reduces the running resistance of water to the blade when entering water and running resistance to the blade in the water, effectively prevents the deformation and break-off of the blade after a long time operation, improves the operation rotation speed, and the oxygenation capacity and the plugflow effect on the bottom flow, improves the operating depth by about 10-15%, and other measures are taken to improve dissolved oxygen, thus the oxygenate dynamic efficiency and the oxygenation capacity are significantly improved compared with the prior art.

The invention relates to a split-level superimposed biological filtration and oxygenation device. The split-level superimposed biological filtration and oxygenation device comprises circulating water containers, as well as porous drip water plates and micro-particle medium layers, which are arranged in cavities of the circulating water containers, and the split-level superimposed biological filtration and oxygenation device is composed of a plurality of the circulating water containers with the same structure which are superimposed and connected in sequence; and a pure oxygen flow area is arranged in the cavity of each circulating water container, the split-level superimposed biological filtration and oxygenation device further has a pure oxygen and water mixed container, and the mixed container is connected in series with all the circulating water containers. The split-level superimposed biological filtration and oxygenation device provided by the invention adopts the plurality of the split-level superimposed circulating water containers, after the pure oxygen flow areas and an automatic cleaning water spray pipe are increased, a certain number of modular circulating water containers can be selected according to requirements of cultivation scale, and when the flow rate of water flow is equivalent, the biological filtration efficiency is doubled; under the action of a tortuous oxygen flow channel formed by a plurality of oxygen diversion plates, pure oxygen and water can be fully mixed and realize contact reaction, and the oxygenation effect becomes very ideal; and the water spray pipe can realize automatic pollution discharge and high time-saving and labor-saving efficiency.

The invention discloses an impeller water-spraying oxygen-increasing machine, wherein a motor (11) is arranged above a support body (2), the support body (2) is connected to one end of a support rod (5) in a trisection mode, the other end of the support rod (5) is provided with a floating ball (9), a shaft of the motor (11) is provided with an impeller shaft (14) through a coupler (13), and the impeller shaft (14) is provided with an impeller (18). The impeller water-spraying oxygen-increasing machine is characterized in that a water outlet body (16) is arranged below the support body (2), the impeller shaft (14) penetrates through the centre of the water body (16), a water inlet cover (8) is arranged below the water outlet body (16), and the impeller (18) is positioned in a cavity formed by the water outlet body (16) and the water inlet cover (8). A spiral membrane on the water-outlet body enables the spraying water to be in a rotation state so that the water can contact with the air for a longer time, the water and the air are further mixed, convection and exchange of a bottom-layer water body and an upper-layer water body are realized, and the oxygen-increasing capability is improved.

The invention belongs to the technical field of sewage aerobic treatment equipment, and relates to an underwater closed pump type impeller inspiration and aeration machine which is characterized in that a first flat plate and a second flat plate are respectively fixedly arranged on the upper end and in the middle of a bracket with a framework structure, a motor is arranged on the first flat plate through a fixing bolt, the lower end of the motor is in transmission connection with a stirring shaft through a coupling, an air inlet disc is arranged below the second flat plate through a regulating bolt, one side of the air inlet disc is communicated with an air inlet pipe in a butted manner, the air inlet pipe is arranged through a guide bracket in a penetration manner, and the guide bracket is embedded on the first flat plate and the second flat plate; a bearing is embedded at the center of the second flat plate in a penetration manner, the lower end of the stirring shaft is in transmission connection with a closed type impeller after penetrating through the air inlet disc, and a water inlet gap with adjustable size is formed between the closed type impeller and the air inlet disc. The equipment is simple in structure, reasonable in design, reliable in principle, convenient to maintain and install, adjustable in air quantity, small in noise, low in power consumption, strong in aeration capability, good in aeration effect, wide in application range, and friendly to use environment.

The invention discloses a water falling plate component and a water falling oxygenation catalytic oxidation ecological ditch. The water falling plate component comprises a guide plate, wherein the guide plate is arranged at a water outlet and is used for guiding water; baffle sides in sealed connection with the guide plate are arranged on two sides of the guide plate; the guide plates and the baffle side form a guide zone; baffle plates in an included angle with a water flow direction are fixed on the guide plate; two ends of the baffle plate are respectively connected with the baffle sides ontwo sides of the guide plate. The height of the baffle plate is lower than those of the baffle sides, and a plurality of baffle plates are arranged on the guide plate in the water flow direction, sothat the guide zone is divided into a plurality of flowing areas; a plurality of through holes are formed in the baffle plates in extension directions of the baffle plates, and adjacent flowing areasare communicated through the through holes; by adopting the water falling plate component, the sewage treatment efficiency in villages and towns can be improved, the effluent quality of sewage treatment and the natural environments of the villages and the towns can be ensured, and the water falling plate component has great significances for comprehensive improvement of villages and towns and ecological civilization construction of China.

The invention relates to a disc-type aerator, which includes, from top to bottom successively, a spiral press cover, a membrane sheet, a flow guide supporting board, and a base. A hole-valve-integrated check valve is disposed between the flow guide supporting board and the base. The membrane sheet includes a first membrane sheet and a second membrane sheet thereon. A plurality of first bar-shaped micro-pores is formed in the first membrane sheet and a plurality of second bar-shaped micro-pores is formed in the second membrane sheet. The first bar-shaped micro-pores and the second bar-shaped micro-pores are disposed in an up-and-down correspondingly staggered manner with central points of all the micro-pores in the same line. An inverted saddle-shaped wedge board is disposed under the base. The disc-type aerator is simple in structure, is convenient to assemble or disassemble, is not liable to block, is good in sealing, can effectively prevent backflow of water, is large in effective aeration area, is significantly improved in anti-fatigue strength, reduces aeration resistance and is prolonged in service life.

The present invention provides a fish culture device for increasing the oxygen content in water by virtue of wind energy. The fish culture device includes a main frame; the main frame is movably provided with an auxiliary fluted disc engaged with a main fluted disc; the outer side of a locating shaft is movably sleeved with a transverse plate; the inside of a water pumping cylinder is provided with a piston rod; a driving rod is movably connected with a driven rod by a rotating plate; a magnetic block is fixedly mounted below the inner wall of the main frame and at the left of the water pumping cylinder; and the left side of the piston rod is fixedly connected with a magnetic conductive plate. A wind energy device receives wind power to drive a rotating shaft and the main fluted disc to rotate, the main fluted disc drives the transverse plate to rotate, the transverse plate drives the driving rod to move up and down, when the water pumping cylinder is driven by the rotating plate and the driven rod to move up and down to the bottommost end, the piston rod moves leftwards under the action of an attraction force of the magnetic block, when the water pumping cylinder moves to the upside of the water surface, the transverse plate squeezes the piston rod to move rightwards, in this way, water at the bottom of the culture device may be continuously may be pumped outside the water surface and then may fall back to the culture device after being in sufficient contact with air, so that the oxygen content of water is increased.

The invention discloses an aeration sheet and a preparation method thereof, belonging to the technical field of water treatment. The aeration sheet is formed by bonding aggregate particles to a hydrophobic adhesive; and holes through which gas molecules can pass and liquid water molecules cannot pass, are formed between adjacent aggregate particles. The preparation method of the aeration sheet is free from high-temperature firing; and the aeration sheet can be obtained only by pouring the aggregate particles wrapped with the hydrophobic adhesive in a forming mould, placing at 5-120 DEG C for 1-48 hours, curing, forming and releasing the mould. Due to the aeration sheet disclosed by the invention, the technical problems of being poor in aeration effect and easy for sewage to enter a gas distribution pipeline caused by difficult control of the aperture of the current aeration sheet are solved. Simultaneously, due to the preparation method of the aeration sheet disclosed by the invention, the problems of being high in energy consumption and serious in environmental pollution of the current aeration sheet are solved.

The invention discloses a drying artificial wetland system and method capable of enhancing absorption of nitrogen and phosphorus. The system comprises a pool body and a water inlet main pipe, whereinthree layers of wetland filler for planting wetland plants are arranged in the pool body, a water outlet pipe leading to a water outlet trough is arranged at the bottom of the pool body, and a micro-spray branch irrigating pipe which is connected with the water inlet main pipe and provided with a nozzle is arranged above the pool body; and the set height of the micro-spray branch irrigating pipe is higher than the growth height of the wetland plants, the water inlet main pipe is provided with a water inlet main valve, a pressure pump and a first timer, and the water outlet pipe is provided with a water outlet main valve and a second timer. A mode of foliar-rhizome double cycled water distribution is adopted, the total nitrogen removal rate is 69.76%, the total phosphorus removal rate is 74.45%, and the removal rate of nitrogen and phosphorous is improved significantly when the method is compared with a traditional method of water distribution in roots; and through foliar spraying, thebiomass of the plants is also significantly higher than that of the traditional method.

The invention discloses a solar energy direct drive aeration system and belongs to the field of water treatment. Aiming at the problems in the prior art that when the solar irradiation is not sufficient, an aeration system often stops, so that reset and restart are required; the use is inconvenient; an aeration effect is worse, the invention provides a solar energy direct drive aeration system. The solar energy direct drive aeration system disclosed by the invention comprises a solar energy module, a fixed support, a floating body connector, an aeration wheel, a transmission shaft, a brushlessdirect current motor, a protective box, a brushless motor controller, a protective net cover, a pulling rope, a fixed pile and a floating body ring; a self-starting circuit is arranged outside the brushless motor controller, and the brushless motor controller is automatically started and stopped. The manual reset is not required, and the automatic startup can be performed through the intervention, so that the operation is greatly facilitated, and the cost is reduced.

The invention discloses a water resource purification ecological floating bed. The water resource purification ecological floating bed comprises a floating bed body, an impeller, soilless plant cultivation devices, submerged plant tanks and side plates, wherein the impeller is mounted at the lower end of the floating bed body, the soilless plant cultivation devices are mounted on the two sides ofthe impeller, the submerged plant tanks are mounted at the lower ends of the soilless plant cultivation devices, and the side plates are mounted on the two sides of each submerged plant tank. The water resource purification ecological floating bed is scientific and reasonable in structure, safe and convenient to use, is provided with the impeller, mixes gas and water mixtures, promotes sufficientdissolving and absorption of oxygen in air, and improves the oxygen transfer efficiency and oxygenation capability; the soilless plant cultivation devices and the submerged plant tanks are arranged, and plants are planted evenly, so that pollutants such as nitrogen and phosphorous in the water body are removed conveniently, and eutrophication of the water body is controlled; the side plates are arranged, through buffer effects of flow buffer chambers in the side plates, the phenomenon is avoided that water flow outside tank bodies directly impact soil in the tank bodies, the flow velocity of the water flow is reduced conveniently, and soil loss in the tanks is reduced.

The invention relates to a disc aerator. The disc aerator includes an installation hood, the bottom of the installation hood is provided with an air inlet, a hollow reel is fixed at an internal center, and the reel is equipped with an aeration disc disposed in the installation hood; the aeration disc is formed by winding of an arc-shaped strip along the reel, the arc-shaped strip surface is equipped with arc-shaped aeration slots; the bottom of the aeration disc is equipped with a horizontal support rod, the support rod adopts the reel as the center, is in divergent arrangement, and is connected to the installation hood inner wall. The disc aerator also includes a connecting pipe that is disposed in the hollow inner part of the reel and is communicated with the air inlet, and a support frame that is connected to the connecting pipe and located at the reel top, the support frame is formed by enclosing of an arc-shaped top surface and a flat bottom surface, also the support frame is internally equipped with a gas distributing cavity communicated with the connecting pipe, and the outer surface of the support frame's arc-shaped top surface is coated with a microporous aeration diaphragm. The disc aerator obtained by the invention not only has large effective aeration service area, but also has good pressure bearing ability, and is easy for cleaning.

The invention belongs to the field of environmental engineering, and particularly relates to a constructed wetland device for sewage treatment and a use method thereof. According to the technical scheme, the constructed wetland device used for sewage treatment is characterized by comprising a processing constructed wetland unit and a terminal reinforced phosphorus removal constructed wetland unit, wherein the processing constructed wetland unit at least comprises three stages, and a water outlet pipe of the processing constructed wetland unit of the last stage is communicated with a water inlet area of the terminal reinforced phosphorus removal constructed wetland unit. According to the technical scheme, sewage enters the processing constructed wetland unit in sequence, the water outlet pipe of the processing constructed wetland unit of the last stage discharges water to the water inlet area of the terminal reinforced phosphorus removal constructed wetland unit, the retention time of the sewage in the reinforced phosphorus removal constructed wetland unit is 4-12 h, and finally the sewage is discharged from a system main water outlet pipe in the terminal reinforced phosphorus removal constructed wetland unit. According to the scheme, by means of the novel constructed wetland device for sewage treatment and the use method thereof, no residual sludge is generated, no residual sludge is generated in the running process of the device, daily maintenance is easy, and the treatment effect is good.

The invention relates to a needle-brush aerator. A blade-type rotating-brush aerator has a low capacity of oxygenation, which delays the time of water disposal. The needle-brush aerator comprises needle brushes, a horizontal shaft 4, a screen of preventing fog 1, motor7 and so on. The needle brush is formed by a plurality of U-shape needles 3 uniformly suspending on the locating ring 8 in a radiating configuration. The locating ring 8 suspending with needles 3, the spacing ring 9, a key bar 10, the clamping bar, and a flexible antiextrusion ring are superposed and assembled in the horizontal shaft 4. The needle brushes are immersed into water and rotate, needles bring air into water, and make water balance. Compared with a blade, needle brush has a much larger specific surface area, improves dynamic balancing, increases the rotating speed, and improves the oxygenation capacity of a needle-brush aerator in duplication. The invention could be used in waste water disposal of urban livingwaste water and industrial waste water.

The invention provides rural domestic wastewater treatment equipment which comprises a shell (12) and an inner supporting wall (11). The inner supporting wall (11) is divided into a biological filter layer (1), a composite biological reaction layer (4) and one to three water collecting layers (5) from top to bottom through supporting plates (2). A ventilating layer (3) is arranged between every two adjacent layers. Small water leakage holes are distributed in the supporting plates (2). The biological filter layer (1) is filled with a biological filter material. A water distributor (6) is arranged above the biological filter layer (1). The water collecting layers (5) are provided with water outlet pipes (10). A biochemical system is enhanced through the composite biological reaction layer, the bearing capacity of pollution loads is improved, microbial flora cultivation environments under different anaerobic, aerobic and aerobiotic resistant conditions are provided, and the long-term maintenance-free purpose can be achieved. The wastewater treatment and operation cost is low, the treatment cost is good, and the effluent quality can reach the national urban wastewater discharge standard.