340results about How to "Improve aeration efficiency" patented technology

The invention is an improved surface aeration impeller for use in a liquid filled tank which particularly increases the surface turbulence and the entrainment of gas into the liquid surface. The impeller is an axial flow impeller and may be either a pitched blade turbine (PBT) or have airfoil shaped blades. In either case, the impeller has a portion which extends radially along an edge thereof which projects above the surface of the liquid being mixed in a vertical direction. The blades of the impeller are modified to include a top horizontal plate to lower the spray height of the liquid and an optional endcap, both of which can enhance and increase the standard aeration efficiency. Preferably, the impeller is rotated in an up-pumping direction and propels the liquid being aerated in a radially upward and outward direction. A sufficient upward surge of liquid is produced so that the liquid is observed to splash back onto the surface a plurality of times in the course of operation of the impeller. Such multiple splashing action enhances the contact between the air and the liquid itself to improve the oxygen transfer efficiency of the aeration impeller.

The present invention provides an improved aeration impeller for use in a mixing assembly having an axis of rotation. The aeration impeller includes a hub and a first and second blades that are connected to the hub. Each blade has a first portion positioned at an angle to the axis of rotation and a second portion positioned at an angle to the first portion. The first portion of each blade has an opening that at least partially extends the width of the first portion.

This invention relates to water disposal facility and means of integrated ozone and aerating biological filter. This aerating biological filter(9) is above ozone catalysis chamber(8), connects with ozone catalysis chamber(8) through the filter plate of biological filter(9); ozone catalysis chamber joints with Venturi tube(5), Venturi tube(5) respectively joints with ozone occurring system(6) and influent water pump(1); ozone occurring system(6) is a ozonizer that by silent discharge method translate oxygen of air into ozone. The water after pretreatment by ozone passes the filter plate of the aeration biological filter pool at the top of the ozone reaction chamber to enter the biological filter pool uniformly and stay for about 1 to 4 hours. This invention can advance aerating efficiency without fixing aerating system, and the flow between aerating biological filter and ozonization buffer pool cell is equilibrium, possess merits of high efficiency, low cost and so on.

The invention mainly discloses an urban rainwater purification method and a hydraulic jump type filter used therein. According to the technical scheme of the invention, the urban rainwater purification method comprises the following steps: collecting rainwater, detecting the rainwater, carrying out sedimentation treatment, carrying out pH value treatment, carrying out aeration treatment, carrying out biological purification, carrying out fine filtration, and storing. The used hydraulic pump type filter comprises a first filter cartridge and a second filter cartridge, a detection cavity is arranged at a water outlet, only after water body is detected to be in line with urban water consumption requirements by virtue of a detection head, the water body is conveyed into a water storage tank, otherwise the water body is conveyed into the first filter cartridge and the second filter cartridge to be filtered again. The urban rainwater purification method disclosed by the invention has the advantages that the rainwater is collected and purified, collection, permeation, purification and utilization of the rainwater in an urban range are realized to the utmost extent under the premise of guaranteeing waterlogging prevention and safety of a city, urban waterlogging stress can be effectively alleviated and reduced, purification efficiency is high, water quality of the treated rainwater is effectively improved, utilization of a rainwater resource is promoted, and sponge urban construction requirements are met.

The invention discloses a high-flux contamination-resisting type flat membrane bioreactor and a flat MBR (Membrane Bioreactor) device. The flat membrane bioreactor comprises an aerating box, at least two membrane boxes and at least two water collecting tubes, wherein the aerating box is provided with an aerating tube for supplying gas to the aerating box; one end of the aerating tube extends into the aerating box; the at least two membrane boxes are overlapped on the aerating box along the vertical direction; two adjacent membrane boxes are connected with each other; the aerating box is connected with the downmost membrane box; each of the membrane boxes comprises a frame and multiple flat membrane elements arranged in the frame at intervals; a water purifying space is defined in each flat membrane element; each flat membrane element is provided with a water-generating tube communicated with the corresponding water purifying space; the at least two water collecting tubes respectively correspond to the at least two membrane boxes one by one; each water collecting tube is connected with the water-generating tubes of the multiple flat membrane elements in the corresponding membrane box. According to the high-flux contamination-resisting type flat membrane bioreactor disclosed by the invention, the high-flux contamination-resisting type flat membrane bioreactor has the characteristics of high flux, excellent contamination-resisting performance, long service life and low cost.

An immersed membrane system or process may use measured or calculated process information to optimize one or more process operating parameters to improve performance or reduce operating costs. An on-line process control system or method may use the resistance in series method in operating an immersed membrane water treatment system. A process control system or process may consider resistance values and adjust operational parameters such as membrane aeration frequency factor, membrane aeration flow, permeate flux, permeation duration, backwash flow and duration, relaxation duration or maintenance or recovery chemical cleaning frequencies in order to reduce the operational costs related to membrane fouling removal.

The invention relates to the technical field of sewage treatment, and in particular relates to a sewage management platform based on sewage biochemical treatment optimization and fine aeration. The platform comprises a data receiving module, a database, a prediction module, a model building module, a model parameter setting module, a model correction module, a process model library, a plan simulation module, a decision module and a control module. The data receiving module is used to receive parameter information uploaded by each sewage treatment plant. The database is used for storing the parameter information. The prediction module is used for predicting the change trend of each state parameter of sewage. The process model library stores the process model of each sewage treatment plant.The plan simulation module is used to carry out plan simulation on each sewage treatment plant under the influence of external disturbances and generate a control plan model. The sewage management platform based on sewage biochemical treatment optimization and fine aeration can optimize process parameters, realizes fine management of sewage treatment processes, and reduces the power consumption ofthe treatment processes.

The invention discloses an aeration device for sewage treatment. The aeration device comprises a tank body, a fixed frame, an aeration disc, a water intake pipe and a water drainage pipe, wherein thetop part of the tank body is fixedly connected with the fixed frame; the upper surface of the fixed frame is fixedly connected with a motor; the shaft extending end of the motor is fixedly connected with a rotary shaft; aeration blades are hinged to the rotary shaft; the lower end of the rotary shaft is fixedly connected with a worm; an aeration rod is arranged in the tank body; a worm gear penetrates through the aeration rod; the lower end of the worm is fixedly connected with the aeration disc; the air is conveyed into the stirring rod and the aeration disc by an air blower, and is finally exhausted into the sewage. The aeration device has the advantages that the sewage at the bottom layer and the sewage at the middle layer are simultaneously aerated, the sewage at the surface layer is lifted by the aeration blades to be in full contact with the air, and the sewage at the surface layer is aerated; the aeration disc is rotated in the aeration process, the air is more uniformly exhausted into the sewage, and then the aeration effect is improved; the sewage is stirred by the stirring rod, the air bubbles are crushed, the sewage and the air bubbles are more fully mixed, and the aeration efficiency is further improved.

The invention discloses a high efficiency aeration tank for treating domestic sewage. The high efficiency aeration tank comprises a tank body, a fixed rack, a motor, an air blower, a water inlet pipeand a drain pipe, wherein the top of the tank body is fixedly connected with the fixed rack; the motor is fixedly connected with the outer wall of the right side of the fixed rack; a shaft extension end of the motor is fixedly connected with a driving shaft, a right half bevel gear and a right half bevel gear sleeve the middle part of the driving shaft, and a worm is arranged under the driving shaft; rotating shafts are respectively arranged at the right side and the left side of the worm; each rotating shaft is fixedly connected with a plurality of aeration plates; a gear sleeves the lower end of the worm; two aeration sliding blocks are respectively arranged at the left side and the right side of the gear. Aeration blades are used for stirring surface layer sewage so as to raise the sewage, thus enlarging the contact area between the sewage and the air; the surface layer sewage is subjected to aeration, so that the aeration effect is improved; therefore, stirring plates are used forstirring the sewage, so that the aeration effect is improved. The aeration plates are used for stirring the sewage while exhausting to the sewage, so that the bottom sewage is upturned, and air bubbles are more evenly mixed into the sewage.

The invention discloses a sewage treatment aeration device. The top end of a device body is fixedly connected with a driving motor; the lower end of the driving motor is rotationally connected with adriving shaft; a bearing at the upper end of the driving shaft is rotationally connected with the device body; the upper part of the driving shaft is fixedly connected with a semi-conical gear respectively; a toothed part of the semi-conical gear is meshed with a first conical gear; the first conical gear is fixedly connected with a lead screw; a bearing at the other end of the lead screw is rotationally connected with the device body; the lead screw is in threaded connection with a sleeving block; the front part and the rear part of the sleeving block are fixedly connected with support rods;the end parts of the support rods are connected with sliding chutes in a sliding way; the sliding chutes are formed in the upper part of a swinging plate. According to the sewage treatment aeration device, the lead screw is used for driving the sleeving block to move leftwards and rightwards in a reciprocating way in order to drive the swinging plate to swing and fully mix gas and liquid inside the device body; the second conical gear drives a driven shaft and a stirring bar under the action of an annular conical rack to revolve and rotate simultaneously, so that a better mixing effect is achieved. The device is reasonable and applicable in structural design, gas and liquid are fully contacted and mixed, the sewage aeration efficiency is increased greatly, and time is saved.

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 provides a method for treating leachate MBR effluent through combination of ozone-catalyzed oxidation and aeration biological filter towers. The method comprises carrying out gas-liquidmixing on leachate MBR effluent and ozone according to a reaction ratio through an injector, mixing the gas-liquid mixture and a circulation fluid, mixing the mixture and hydrogen peroxide according to a reaction ratio through a static mixer, feeding the final mixed liquid into an ozone-catalyzed oxidation tower through a lower water inlet, feeding the tail gas discharged through a top tail gas outlet into an ozone decomposing device, carrying out treatment, carrying out gas-liquid mixing through the injector, feeding the gas-liquid mixture into a biological filter tower through a low water inlet, and carrying out treatment through the biological filter tower so that the product water can stably satisfy the municipal solid waste landfill pollution control standard (GB 16889-2008) in the fig 2. The method realizes full treatment on leachate MBR, solves the problem that the prior art is difficult to treat a thick membrane liquid and realizes the efficient and comprehensive utilization ofozone.

The invention discloses a high-efficiency aeration device for sewage treatment. The high-efficiency aeration device comprises an outer shell, a first winding roller, a serpentine pipe, rotary motors, a blower and damping mechanisms, wherein the upper end of the shell is provided with the first winding roller; a rotating shaft of the first winding roller is provided with a positive-and-negative-rotation motor B; the left and right ends of the shell are symmetrically provided with bar-shaped teeth which are engaged with gears; the serpentine pipe is arranged between and fixedly connected with the left gear and the right gear; the left and right ends of the serpentine pipe are separately provided with a sleeve; the left side of the shell is fixedly connected with a positive-and-negative-rotation motor A; the left side of the blower is fixedly connected with an air outlet pipe; the air outlet pipe is fixedly connected with a plurality of nozzles and provided with a tee pipe; the lower end of the shell is symmetrically provided with the damping mechanisms; and each damping mechanism comprises an inverted U-shaped plate, a spring B and a supporting plate. The high-efficiency aeration device provided by the invention is simple in structure and convenient to operate, improves aeration efficiency through different ways so as to improve sewage treatment effect and has long service life.

The invention relates to an oxidation nanofiltration membrane reactor. The oxidation nanofiltration membrane reactor consists of a reaction-separation system (a raw material pump, an oxidation reaction kettle, a circulating pipe and a gas distribution plate), a pressurizing system (an ozone generator, a buffer tank, a pneumatic booster pump, an air compressor and a pressure-stabilizing tank) and a tail gas treatment system (an ozone absorption device), wherein a membrane component is encapsulated in a membrane component and placed into the reaction kettle; the circulating pipe is arranged at the position of a side arm of the kettle body; and the gas distribution plate is positioned on the top of a settling region. In the reactor, the kettle body serves as a liquid ascending region, the circulating pipe serves as a liquid descending region, gas is redistributed through a membrane channel, and gas liquid phases form slug flow in the membrane channel, so that gas liquid mass transfer is enhanced, the reaction process is enhanced and the utilization ratio of the gas is increased; and high-pressure ozonized air generated by the pressurizing system serves as a reaction source and a circulating power source of the reactor, so that the degradation of organic matters in the reactor is accelerated and a necessary impelling force is provided for separation of the nanofiltration membrane.The reactor has the advantages of simpleness and convenience in operation, high mass transfer efficiency, low energy consumption, easiness in amplification and the like.

The invention discloses an agitation type aeration device for municipal sewage treatment. The device comprises a rotary motor, a shell, a first rotating shaft, first agitation rods, second rotating shafts and a fan, wherein the rotary motor is arranged at the upper end of the shell; the first rotating shaft is fixedly connected with the output end of the rotary motor; sleeves are fixedly connectedon the first rotating shaft and are arranged symmetrically; the first agitation rods are connected in the sleeves in a rotating manner; a gas conducting pipe B is arranged in the first rotating shaft, and a gas conducting pipe A is arranged in each first agitation rod; second rotating shafts are symmetrically arranged on left and right sides of the lower end of the first rotating shaft, and are connected at the bottom of the shell in a rotating manner, and spiral vines are fixedly arranged on the second rotating shafts; an arc spray pipe is arranged at the lower half part of each second rotating shaft; the second rotating shafts have a hollow structure, and gas conducting pipes C are arranged inside the second rotating shafts. The agitation type aeration device is simple in structure andconvenient to use, can be used for increasing the aeration efficiency and improving the sewage treatment effect, and is worthy of popularization.

The invention relates to a high-efficiency integral aerating device for sewage treatment, belonging to the field of sewage treatment aerating equipment. The device is composed of an air compressor, a compressed air delivery pipe system, a water-surface water-jump aeration mechanism, an underwater blast aeration mechanism and an underwater stirring mechanism, wherein the water-surface water-jump aeration mechanism is aeration rotary-axe wheel rows which are communicated by connecting compressed air delivery branch pipes in series, and the aeration rotary-axe wheel rows are communicated with the upper parts of air delivery main pipes through the air delivery branch pipes and are arranged on the surface of a water body; the underwater blast aeration mechanism is microporous aeration circular pipes, and the microporous aeration circular pipes are communicated with the compressed air delivery main pipes through microporous radial-connecting pipes and are arranged in the water body; the stirring mechanism is stirring wheel rows which are communicated by connecting the compressed air delivery branch pipes in series, and the stirring wheel rows are communicated with the air delivery main pipes through the air delivery branch pipes and are arranged between the aeration rotary-axe wheel rows and the microporous aeration circular pipe groups and between upper and lower microporous aeration circular pipe groups respectively. A set of compressed air power source is adopted, dissolved oxygen in the water body is integrally, efficiently, synchronously increased and is quickly and uniformly distributed, and the aeration efficiency and the energy utilization rate are significantly increased.

The invention relates to the technical field of sewage disposal technologies, and discloses an aerating apparatus. The aerating apparatus comprises an aerating box body, a first motor, a first rotary shaft, a floating stirring part, an air blower, an aerating stirring rod, an air venting valve, multiple aerators, an air exhausting chimney, a water draining pipe and a water draining valve; the aerating box body is provided with an aerating cavity, a sewage inlet is formed in the aerating box body and the aerating cavity is a rotational cavity; the first motor is arranged in the aerating box body; the first rotary shaft is fixed to an output shaft of the first motor and is coaxial with the aerating cavity. Through the arrangement of the aerators on the aerating stirring rod, the aerating apparatus can conduct aerating and at the same time stirring on the sewage after the sewage enters the aerating cavity, and thus aerating efficiency of the aerating apparatus is improved.

The invention discloses a treatment method for port chemicals wastewater. The method comprises the following steps: the oil separation-air floating treatment, the biological fluidized bed treatment, the anaerobic settling tank treatment and the ozone aeration biological filter integral device treatment. The port chemicals wastewater is retained for 1 to 3 hours in an oil separation tank; and the surface load of the oil separation tank is 0.8 to 1.5m/m.h. The hydraulic power is retained for 6 to 18 hours in a biological fluidized bed; and the gas-water ratio is 10-30:1. The hydraulic power is retained for 12 to 36 hours in an anaerobic settling tank. Then after the wastewater is retained for 1 to 2 hours in an intermediate regulation tank, 50 to 200 mg/L of ozone is added. After being oxidized by the ozone, the wastewater undergoes the biochemical treatment in the aeration biological filter; and the hydraulic power is retained for 6 to 12 hours in the aeration biological filter. The method realizes the miniaturization of equipment, reduces the floor space and energy consumption, and has stable treatment effect. The automatic control on the wastewater treatment process is easily realized and the personnel operation is simple, and the method has good industrialized application prospect.

The invention discloses a fiber tube reinforced hollow fiber composite biofilm as well as a preparation method and application thereof. According to the invention, a coating-immersion precipitation phase transformation method is adopted for utilizing a composite film spinning device to coat a braided tube by a casting solution liquid to prepare the fiber tube reinforced hollow fiber composite biofilm with high strength and high flux. The product provided by the invention has a large specific surface area, in particular, the specific surface area of the oxygen permeable film can be as high as 5108 m<2>/m<3>; the film is used as a carrier, a sufficient adhesion area can be provided for growth of microorganisms in a smaller space, so that a concentration of the microorganisms in the unit space is greatly improved, the treatment capacity per unit volume can be improved, and the aeration efficiency is high; the film has the characteristics of selective ventilation, and the oxygen absorptioncapacity is multiple times that of conventional equipment; and the product has the high-efficiency oxygen separation characteristic, so that the microorganisms are attached to the surface of the biofilm to form a biotic community to naturally form a stable ecosystem, the efficiency of biological absorption of water pollutants is accelerated, and the black odor problem can be thoroughly solved.