124 results about "Submersible mixer" patented technology

The invention discloses an A<2> / O-biology synchronous nitrogen and phosphorus removal device for urban sewage. The device comprises a pre-anoxic pond, an anaerobic pond, an anoxic pond, an aerobic pond and a settling pond; the urban sewage is conveyed to the pre-anoxic pond and the anaerobic pond through a water inlet, a sewage lifting pump room with a coarse grille and a fine grille, an aeration grit basin, a water pump and a water inlet pipe; the interior of the pre-anoxic pond, the interior of the anaerobic pond and the interior of the anoxic pond are each provided with a submersible stirrer, the bottom of the aerobic pond is provided with an aerator, the aerobic pond is connected with the anaerobic pond through a nitration mixing reflux pipeline, the anoxic pond is connected with the anaerobic pond through an anoxic mixing reflux pipeline, one part of sludge at the bottom of the settling pond is conveyed to a sludge concentrating and dewatering room, and the other part of the sludge at the bottom of the settling pond is connected with the pre-anoxic pond through a reflux sludge pipeline. The invention further discloses an A<2> / O-biology synchronous nitrogen and phosphorus removal method for the urban sewage. According to the A<2> / O-biology synchronous nitrogen and phosphorus removal device and method for the urban sewage, the influence of nitrate on the anaerobic phosphorus releasing process is reduced or eliminated, the carbon source demands for anoxic denitrification nitrogen removing and anaerobic phosphate releasing are balanced, and the efficient nitrogen and phosphorus removal effects are achieved.

An energy-saving and environmental-protection process flow of sewage treatment relates to the technical field of sewage treatment. The process flow is characterized by comprising the following steps: collecting waste water containing heavy metal through pipelines, sending into a grilling drainage and passing through a crude grilling; sending the waste water filtered by the crude grilling into a collecting well; supercharging the waste water in the collecting well through a pump and then lifting to an adjusting tank; stirring with a submersible mixer mounted in the adjusting tank; sending the waste water stirred in the adjusting tank to a pH adjusting tank through a lift pump; sending the waste water in the pH adjusting tank to a coagulation reaction tank; sending the waste water in the coagulation reaction tank into a primary settling tank for preliminary sedimentation; enabling supernatant in the primary settling tank to gravity flow to an A / O biochemical tank; decomposing the waste water in the A / O biochemical tank and then sending to a secondary settling tank; sending supernatant obtained through secondary sedimentation in the secondary settling tank to an middle tank; lifting the waste water in the middle tank to an active carbon pot through a pump; and sending the waste water adsorbed by the active carbon to a disinfection tank for disinfection. The process flow has advantages of environmental protection, energy saving, simple operation process and significant treatment effect.

The invention discloses a reversed-order SBR (Sequencing Batch Reactor) water processing device and method for enhanced nitrogen removal and belongs of the field of activated sludge sewage processing. The device comprises a reversed-order SBR pool, a water inlet pipe, a water outlet pipe, an air inlet pipe and an aeration head, wherein the reversed-order SBR pool can carry out anoxia denitrification denitrification, anaerobic phosphorus release, aerobic denitrification and aerobic phosphorus uptake reaction; the water inlet pipe is connected with a water inlet pump; the inlet of the air inlet pipe is connected with an air blower; the outlet of the air inlet pipe is connected with the aeration head; a submerged stirrer, a dissolved oxygen (DO) sensor, an oxidation-reduction potential (ORP) sensor and a pH sensor are arranged in the reversed-order SBR pool are arranged in the SBR pool for monitoring on line; and the meters are respectively connected with a PLC (Programmable Logic Controller). On the basis of the traditional SBR reaction pool, the reversed-order SBR water processing device has the advantages that a water inlet mode is improved and a water inlet time sequence and water inlet duration of working procedures, such as stirring, aeration, precipitation, water cecantation and the like are adjusted, so that the denitrification efficiency of the reversed-order SBR technology is higher, the use ratio of the raw water carbon source is bigger, the processing effect is more stable, and the operation cost of a sewage treatment plant is directly lowered.

The invention discloses a precise aeration and combined defoaming process scheme for garbage leachate treatment, which is characterized in that it includes three parts: a precise aeration subsystem, a combined defoaming subsystem and an electrical automatic control subsystem. The main equipment of the air sub-system includes: blower, jet pump, jet aeration head, etc. This is a high-efficiency aeration system equipped with a frequency converter, which can adjust the aeration volume in a wide range according to the process needs and realize large-bubble aeration and small bubble aeration conversion; the main equipment of the combined defoaming subsystem includes: defoamer dosing pump, acid dosing pump, urea dosing pump, ultrafiltration water spray valve, ultrafiltration water spray pump, ultrafiltration Backflow valve, defoaming spray head, sludge diversion manual valve, anoxic and aerobic connecting valve, submersible mixer, etc., and the cooling towers, sludge circulation pumps, ultrafiltration circulation pumps and other equipment for adjusting the aerobic pool are also certain To a certain extent, it plays an auxiliary defoaming effect. The operation of the above-mentioned equipment can treat both symptoms and root causes, and implement 12 kinds of defoaming process means or a combination of the 12 kinds of process means to effectively control and eliminate the foam generated during the aeration process.

The invention discloses an open caisson automatic sinking device and a construction method. The device is characterized in that the open caisson automatic sinking device is composed of a working platform, a vertical connecting frame, an electric rotating roller, submerged electric soil cutting blades, a submerged stirrer assembly, a booster pump, soil cutting high-pressure water spray nozzles, a deviation rectification high-pressure water spray nozzle assembly, a suction pipe, a sludge pump, a sludge output pipe, an electric control cabinet and the like. The open caisson automatic sinking construction method is characterized in that the high-pressure water spray nozzles are utilized for rushing soil and the submerged electric soil cutting blades are utilized for cutting the soil to achievea combined effect, so that the soil inside an open caisson is converted into sludge which is then transported to the outside of the open caisson, and open caisson sinking and deviation rectificationare achieved through automatic control over equipment via a control system. According to the device and construction method, unmanned operation on an open caisson sinking operation plane can be achieved, the sinking speed and deviation are controlled through the control system, and the open caisson sinking quality is guaranteed; and compared with other methods, the device and construction method can be used in watery and waterless operation environments, the construction intensity is relieved, the risk is lowered, the efficiency is improved, and the cost is lowered.

The invention discloses a sewage treatment plant standard-improving transformation system. The system comprises an in-situ transformation DAT-IAT biochemical pond, an additionally added intermediate water pond, a pipeline mixer, a grid flocculation pond, an oblique tube sedimentation pond, a D-type filtering pond and a clean water pond; a front segment of a DAT pond is arranged as an anoxic zone,a rear segment of the DAT pond is arranged as an aerobic zone, and submersible stirrers are diagonally arranged at the bottom of the anoxic zone; the aerobic zone is internally provided with fillers;the bottom of an IAT pond is provided with a mixed liquid reflux pump which is connected with a tee pipe, and the tee pipe is connected with a reflux main pipe, a remaining sludge discharge pipe and areflux bypass pipe; the standard-improving transformation system further includes a sludge pond, and the sludge pond is communicated with the intermediate water pond. The invention also provides a method for treating sewage by using the standard-improving transformation system. The construction difficulty is low, the period is short, the effect acts fast, the transformation cost is low, and allindexes of treated effluent water after transformation can stably reach first-level A standards of pollutant discharge standards of urban sewage treatment plants.

The invention discloses a safe and reliable submersible mixer with cutting function, which can effectively prevent the winding of dirt and avoid the motor overload, and has favorable mechanical sealing. The mixer comprises a submersible motor, a rotation shaft arranged at the output shaft end of the submersible motor, a bearing seat arranged at the peripheral region of the rotation shaft, a mechanical sealing seat arranged below the bearing seat, a propeller fixedly connected with the rotation shaft, and a cutting device consisting of a fixed knife and a rotary knife in clearance fit, whereinthe fixed knife is arranged on the mechanical sealing seat while the rotary knife is arranged on the propeller; and a cutting area is arranged at the inlet of the propeller. The invention is suitablefor the submersible mixer.

The invention relates to a sediment adding facility for sediment removal test by a tidal estuary sediment physical model and provides a system which can control sediment adding time and sediment adding quantity in time according to the range and variation process of a tide so as to meet the working requirement of the tidal estuary sediment physical model. In the technical scheme of the invention,the in-time sediment adding system for the tidal estuary sediment physical model is characterized by comprising a sediment stirring pond, a model sediment adding device and a sediment transmission pipeline, wherein the sediment stirring pond is provided with a submersible mixer and a submersible sediment pump, the model sediment adding device is arranged at an estuary model and controlled by a computer, the two ends of the sediment transmission pipeline are respectively communicated with the sediment stirring pond and the model sediment adding device, the sediment transmission pipeline is also provided with a control gate valve and a pressure regulator and consists of a water inlet pipe and a return water pipe, wherein the tail end of the water inlet pipe is divided into two branches, onebranch is communicated with the control gate valve through a flange and the other branch is communicated with the return water pipe.

The invention discloses a quenching tank for the large and medium size forging, comprising a body and submersible mixers which are mounted at the periphery and bottom of the inner wall of body. The submersible mixers are positioned at the middle in the height direction of each side of inner wall, at the two middle points of the trisected distribution of the inner wall in the length direction of each side inner wall. Thirteen submersible mixers are mounted at the bottom of the body and in the regular five-row and five-line lineup distribution. Each submersible mixer in the bottom of the body is connected with a frequency conversion controller by a line, the rotating speed of each submersible mixer can be controlled by the frequency conversion controller, thus a uniform temperature area is formed in the quenching solution in the body. The invention has simple structure, easy production, maintenance and use, and is mainly used for the quenching of large and medium size forging.

The invention discloses an efficient permanent magnet submersible mixer with sand prevention and winding prevention functions, which comprises an impeller, a flow guide cover, a miniature impeller, a mechanical sealing seat and a motor. The mechanical sealing seat is assembled on the motor, a hub shaft is assembled at the end part of a rotor shaft of the motor, and the end surface of a hub body is in clearance fit with the end surface of the mechanical sealing seat to form a labyrinth seal. A flushing cavity is formed between a hub body and the mechanical sealing seat. The flow guide cover is connected with the mechanical sealing seat and is positioned in the flushing cavity. The micro impeller is arranged on the hub shaft and is positioned in the flow guide cover. The flow guide cover comprises a cover body and an intercepting body, and the intercepting body is arranged at an opening in the end, away from the mechanical sealing seat, of the cover body. According to the efficient permanent magnet submersible mixer, sand grains and fibers entering the cavity of the hub can be effectively collected, liquid in the cavity can be effectively purified, a mechanical seal is not directly washed, circulation of the liquid containing particles and fibers around the mechanical seal is promoted, and long-term safe operation of the mechanical seal is protected.

The invention provides an AO / SBR system and process for enhanced nitrogen removal, belonging to the technical field of simultaneous phosphorus and nitrogen removal by using SBR and derivative processes thereof. The system comprises an anoxic zone in which a constant water level is set, a submersible mixer is additionally arranged and an anoxic filling material is added, an aerobic zone in which an aerobic filling material zone is arranged and an aerobic filling material is added, a reinforced sludge backflow system and an improved automatic control system, The process has the advantages of good anti-load capacity, simple operation, a high degree of automation, discharge of a small amount of sludge, simultaneous nitration, denitrification and nitrogen removal effects, low possibility of sludge bulking and the like, is applicable to upgrading and rebuilding of conventional sewage treatment plants, does not increase floor space of a project and can be conveniently popularized and applied in building, upgrading and rebuilding of small and medium sized sewage treatment plants in China.

The invention relates to a control system for a CAST segmental inputted water reinforced denitrification process, which is suitable for the treatment of industrial waste water containing nitrogen and the reinforced treatment of town sewage. The control system comprises a selector, a main reaction area, a water feeding pump, a stirrer, an immersed water stirrer, a reflux sludge pump, an aerator arranged on the bottom of the main reaction area, an air compressor connected with the aerator, a drain valve, a sludge discharge valve for discharging the excess sludge in the main reaction area, and ORP, pH sensors and an on-line control system connected with a computer. The on-line control system is connected with a time relay which is connected with the water feeding pump, the stirrer, the immersed water stirrer, the reflux sludge pump, the air compressor, the drain valve and the sludge discharge valve. The control system adopts an on-line control strategy to control the aerobic aeration time and anoxia stirring time in the biological denitrification process, thereby solving the problems of nitrification or incomplete denitrification caused by deficient aeration or stirring time and the problems of improved operating cost and energy waste caused by overlong aeration or stirring time.

The invention relates to an improved oxidation ditch cycle multiplication system. The improved oxidation ditch cycle multiplication system comprises an aerobic region, an anaerobic region and an anoxic region, wherein the aerobic region is an annular ditch, and a water flow propelling device is arranged in the aerobic region; the anaerobic region and the anoxic region are arranged in the annular ditch, and a public wall body is arranged among the aerobic region, the anaerobic region and the anoxic region; and partition walls and submersible mixers are arranged in the anaerobic region and the anoxic region. The system is provided with the obvious aerobic region, anaerobic region and anoxic region, and the three or two regions can be flexibly combined into the system according to the wastewater quality characteristics, so that the treatment purposes of phosphorous removal, denitrification and organic matter removal are achieved; and furthermore, the aerobic region is set as the annular ditch, and one or two of the anaerobic region and the anoxic region are put in the annular ditch, and the joints of the three region share the same public wall body, so that the occupied area and the construction cost are saved.

The invention relates to a control device and a method of a CAST segmental inflow and synchronous denitrification and dephosphorization reinforcement process, which belongs to the technical field of SBR and variant process spent water biological denitrification. The denitrification and dephosphorization effect of the currently used CAST technique is not desirable. The device comprises a selector, a main reaction zone, an inlet pump, a stirrer, a diving stirrer, a return sludge pump, an aerator, an air compressor, a decant machine, a drain valve, a mud valve, a real-time controlling system and a sensor. The real-time controlling system is used for controlling a time-delay device which is connected with the inlet pump, the stirrer, the diving stirrer, the return sludge pump, the air compressor, the decant machine, the drain valve and the mud valve, a computer, and a data collecting card connected on the computer. By the processes of inflow anoxia stirring, inflow anaerobism stirring, aeration, sedimentation, drainage and leaving unused, the synchronous denitrification and dephosphorization is realized. The device and the method have the advantages of good denitrification and dephosphorization effect, low operation cost, and being capable of realizing intelligent control, and the like.

A method for processing unseparated egg shells includes placing unseparated egg shells in a separation tank containing fluid, applying cavitation to the unseparated egg shells in the fluid to thereby separate the egg shell membranes from the egg shells, and recovering the egg shell membranes. An apparatus for processing unseparated egg shells includes a separation tank for holding a fluid, a recirculating loop operatively connected to the separation tank, and at least one submersible mixer in the recirculating loop to recirculate the fluid and egg shell membranes and egg shells within the fluid. The apparatus further includes a membrane collection conveyor for conveying egg shell membranes from the separation tank and a shell conveyor positioned beneath the separation tank for conveying egg shells away from the separation tank.

The invention belongs to the technical field of fluid and chemical engineering, and relates to a test board for measuring the overall flow velocity of a submersible mixer and a method for measuring the overall flow velocity of a submersible mixer. The test board comprises a submersible mixer and a cone-shaped five-hole probe which are arranged in a sewage treatment pool, wherein the sewage treatment pool is a road-shaped pool; the cone-shaped five-hole probe is connected with an input end of a signal collector through a pressure sensor; and an output end of the signal collector is connected with a computer. The test board for measuring the overall flow velocity of a submersible mixer can measure the overall flow velocity of a submersible mixer by means of the integral principle, wherein the measuring process includes starting measurement from the position which is about 40mm apart from an impeller axis of the submersible mixer (dmin=40mm); moving to two sides point by point by the increment (each d=80) to measure the mean flow velocity in each anchor ring until the measured mean flow velocity is less than the minimum flow velocity Vmin so as to determine the maximum diameter dmax of a circle; and then obtaining the overall flow velocity. The invention provides the method for measuring the overall flow velocity of the submersible mixer, and designs the test board for measuring the overall flow velocity of the submersible mixer for the measuring method, thus being able to provide accurate experimental data for a factory inspection report of the mixer.

A membrane rainwater treatment device comprises a rainwater well, an initial rainwater discarding device, a rainwater collecting pool and a treatment pool which are connected through pipelines in sequence. The upper end of the treatment pool is opened, a treatment pool body is divided into four pool bodies, namely, an anoxic pool body, an MBR membrane rainwater treatment pool body, a sludge pool body and a clean water pool body, through partition plates, two sewage lift pumps are arranged at the bottom end of the rainwater collecting pool, each sewage lift pump extends into the bottom end of the anoxic pool through a suction pipe, a submersible mixer is arranged at the portion, near the bottom end, of the anoxic pool, at least three flat membrane filter assemblies are arranged in the MBR membrane rainwater treatment pool, an air inlet formed in the bottom end of each flat membrane filter assembly is connected with a roots blower through an air inlet pipeline, an aerator pipeline is additionally arranged at the bottom of the MBR membrane rainwater treatment pool to be connected with the air inlet pipeline, a water outlet formed in the top end of each flat membrane filter assembly is connected with the clean water pool through a water outlet pipeline, two suction pumps are arranged in parallel on the water outlet pipeline, a drainage pipeline is arranged at the bottom end of the clean water pool, a suction pump is arranged on the drainage pipeline, and a disinfection pipeline is arranged on the portion, near the top end, of the clean water pool.

The invention discloses an efficient permanent-magnet submersible mixer with an anti-winding function. The efficient permanent-magnet submersible mixer comprises an impeller (1) and a mechanical seal seat (3), wherein the impeller (1) and the mechanical seal seat (3) are in clearance fit; a sharing pair is formed in the matched position of the impeller (1) and the mechanical seal seat (3) and is formed through matching of an annular rotary knife (13) on a hub (12) of the impeller (1) and a fixed knife (35) on the inner circumference of the mechanical seal seat (3). According to the efficient permanent-magnet submersible mixer with the anti-winding function, fiber-like substances in sewage can be prevented from entering a cavity between the mechanical seal seat and the impeller while energy is saved and consumption is reduced, winding of mechanism seal is thoroughly eliminated, and accordingly, the service life of the submersible mixer is prolonged.

The invention relates to a high-efficiency submersible mixer. The submersible mixer is characterized in that the submersible mixer comprises a flow guide cylinder, a flow guide cover, an oil chamber,a motor, a transmission shaft, an impeller and a cable; the flow guide cylinder is connected with the flow guide cover; the impeller is connected with the motor through the transmission shaft; and themotor rotates to drive the impeller to rotate synchronously. The lubricating oil in the oil chamber exerts a good lubricating function for mechanical sealing during the rotation process of the impeller, so that the friction loss of mechanical sealing and the bearing is small. The optimized rear-sweep impeller generates a large thrust, and the axial jet is greatly increased by the flow guide coverdesigned through the hydraulic optimization, so that the mixture is fully mixed and homogenized, the liquid flow is accelerated, and suspended matter in the liquid is prevented from settling. Compared with other submersible mixer, the submersible mixer provided by the invention has the efficiency improved by 20%, and the energy-saving effect is remarkable.

The invention discloses an in-situ nitrogen removal and standard-improving transformation system for sewage treatment plants. The system comprises an original sewage treatment DAT-IAT biochemical pondbody, a front segment in a DTA pond of the DAT-IAT biochemical pond body is arranged as an anoxic zone, and a rear segment in the DTA pond of the DAT-IAT biochemical pond body is arranged as an aerobic zone; a first aeration pipe is arranged at the bottom of the anoxic zone, submersible mixers are arranged in the anoxic zone in the diagonal direction, and a second aeration pipe is arranged at thebottom of the aerobic zone; the aerobic zone is also provided with fillers; a third aeration pipe is arranged at the bottom of an IAT pond; a mixed liquid reflux pump is arranged at the bottom of theIAT pond, a tee pipe is arranged on a liquid outlet pipe of the mixed liquid reflux pump, and three liquid outlet pipe bodies of the tee pipe are connected to a reflux main pipe, a remaining sludge discharge pipe and a reflux bypass pipe respectively. The invention also provides a method for treating sewage by using the system. The construction difficulty is low, the period is short, the effect acts fast, and ammonia nitrogen, total nitrogen, COD and BOD in effluent water after transformation can all reach first-level A standards of pollutant discharge standards of urban sewage treatment plants.

The invention relates to the technical field of sewage treatment. An up-flow type coupling hydrolysis acidification pool comprises a hydrolysis acidification pool body, wherein the hydrolysis acidification pool body sequentially comprises a clarifying region, a coupling settling reaction region and a sludge bed reaction region from top to bottom, a mixer is arranged in the hydrolysis acidification pool body and is a submersible mixer, and the submersible mixer is arranged at the bottom of the hydrolysis acidification pool body and is located in the sludge bed reaction region. Under the action of the submersible mixer, sludge in the sludge bed reaction region is rapidly and uniformly mixed, a sludge bed is similar to a filter layer, particular materials and colloidal materials, entering water, are rapidly intercepted and adsorbed and then decomposed by a large quantity of hydrolysis bacteria, many insoluble organic materials are hydrolyzed into soluble materials, and macromolecular and difficultly-biodegradable materials are converted into micromolecular and easily-biodegradable materials.

The invention discloses a micro-aerobic biological treatment system and method for degrading cyclic compounds in coal pyrolysis wastewater, belonging to the technical field of sewage treatment. The invention aims to solve the problems that semicoke and activated coke are difficult to regenerate and high in energy consumption and cost, and sludge carriers such as powdered activated carbon or activated coke powder and the like are easy to block advanced treatment membranes and advanced oxidation equipment in the prior art. The method comprises the following steps: starting a submersible stirrerand supplying air into a tank a through a microporous air disc aeration device; allowing coal pyrolysis wastewater to enter a tank b after having undergone adsorption by magnetically-modified activated coke and synergistic degradation of sludge-biological membrane; then allowing the wastewater to enter an annular effluent weir after adsorption and filtration by semicoke; and intercepting the wastewater with a sawtooth structure of the annular effluent weir and then allowing the wastewater to flow out through a water outlet pipe, thereby finishing degradation of cyclic compounds in the coal pyrolysis wastewater. The micro-aerobic biological treatment system and the micro-aerobic biological treatment method for degrading the cyclic compounds in the coal pyrolysis wastewater are disclosed inthe invention.

The invention discloses a device and a method for treating low C / N ratio nitrified wastewater. The device comprises a regulating reservoir, a wastewater lifting pump, a first anaerobic tank, an aerobic tank, a second anaerobic tank, perforated pipe aerators, a lifting aerator pipe, a secondary sedimentation tank, a sludge pump, a submersible mixer, a steam pipe and a blower. Wastewater enters into the regulating reservoir and then enters into the aerobic tank through the lifting pump, the wastewater in the aerobic tank is aerated and heated, and meanwhile, the returned sludge in the secondary sedimentation tank synchronously enters into the aerobic tank; wastewater enters into the two anaerobic tanks through a water outlet at the bottom of the aerobic tank, the wastewater in the two anaerobic tanks is intermittently aerated, and the submersible mixer is arranged for stirring; and wastewater enters into the secondary sedimentation tank for solid-liquid separation through water outlets of the two anaerobic tanks, wherein partial sludge returns to the aerobic tank through the sludge pump, and the rest sludge is treated. The device has the advantages of low DO, (dissolved oxygen), zero external carbon source, high nitrification efficiency, simple structure, small occupied area, less investment, low running cost and continuous / intermittent operation.

A mobile submersible mixer comprising a mobile platform, frame or chassis with a plurality of wheels, with one or more mixing jets or systems mounted thereon. The apparatus also may comprise an aeration system and real-time sampling system. The apparatus is introduced into a pit or tank, typically by rolling the mixer down a ramp into the pit or tank.

The invention discloses a processing system for manufacturing an antibacterial PEVA (polyethylene vinyl acetate) film. The processing system comprises a PEVA film which is sequentially connected to a rolling device through a steering roller, a supporting roller, a hot air type oven and a corona unit; a coating roller is arranged below the steering roller; the bottom of the coating roller is soaked into an antibacterial agent emulsion tank; and a submersible mixer is further arranged on the inner part of the antibacterial agent emulsion tank. The invention further discloses a processing method for manufacturing the antibacterial PEVA film, wherein the processing method comprises the following steps: preparing the PEVA film; preparing antibacterial agent emulsion; uniformly coating the prepared antibacterial agent emulsion on the surface of the PEVA film by virtue of the coating roller; drying by utilizing the hot air type oven; and carrying out corona treatment on the dried PEVA film on which the antibacterial agent emulsion coats, thereby expanding the surface area of an antibacterial agent coating. By adopting the technology, the antibacterial agent emulsion uniformly coats on the surface of the PEVA film directly, and the PEVA film is dried and subjected to the corona treatment, so that the processing system has the advantages of being good in antibacterial performance, low in cost, and the like.

A method for processing unseparated egg shells includes placing unseparated egg shells in a separation tank containing fluid, applying cavitation to the unseparated egg shells in the fluid to thereby separate the egg shell membranes from the egg shells, and recovering the egg shell membranes. An apparatus for processing unseparated egg shells includes a separation tank for holding a fluid, a recirculating loop operatively connected to the separation tank, and at least one submersible mixer in the recirculating loop to recirculate the fluid and egg shell membranes and egg shells within the fluid. The apparatus further includes a membrane collection conveyor for conveying egg shell membranes from the separation tank and a shell conveyor positioned beneath the separation tank for conveying egg shells away from the separation tank.

The invention discloses an MBBR (Moving Bed Biofilm Reactor) used for electroplating wastewater treatment. The MBBR comprises a reaction tank and a sedimentation tank, wherein the water inlet end of bottom of the reaction tank is equipped with a water inlet tube, a gas inlet tube and at least one submersible mixer; the bottom of the reaction tank is equipped with an aeration tube and a filler sedimentation ditch with a filler discharge tube; the inner part of the filler sedimentation ditch is equipped with a spiral conveyor; the water outlet end of the upper part of the reaction tank is equipped with a rotary scraper plate and a screen; the inner part of the reaction tank is added with suspended filler; the water inlet end of the sedimentation tank is equipped with a guide slot; the upperpart of the tank body is equipped with a water outlet weir and a water outlet tube; and the bottom of the tank body is equipped with a sludge discharge tube and a sludge reflux tube. The rotary scraper plate and the submersible mixer are arranged in the reactor, so that a circulating flowing state of the suspended filler is guaranteed; the filler sedimentation ditch is arranged for timely discharging scaled filler, so that the biological treatment effect, on electroplating wastewater with poor biodegradability and high salinity, of the MBBR process can be effectively strengthened.

A waste incineration plant leachate treatment method includes the following steps: S1, waste leachate is introduced into a pre-sedimentation tank for removal of large particulate matters and sedimentin the leachate, and the leachate is introduced into a regulating tank; S2, the leachate is continuously stirred by a submersible agitator arranged at the bottom of the regulating tank, and the leachate is introduced into a UBF pool; S3, the leachate is circulated in the UBF pool, and the leachate overflows from the top of the UBF pool to an intermediate pool; S4, the leachate is precipitated in the intermediate pool, and outlet water overflows to a first denitrification tank; S5, after denitrification reaction, sewage overflows to a first-stage nitrification tank by a stirrer set in the firstdenitrification tank for nitrification in the first-stage nitrification tank, and the sewage overflows to a secondary denitrification tank; S6, after the sewage passes through the secondary denitrification tank and a secondary nitrification tank in turn, the sewage is directly pumped into a membrane treatment system; and S7, the sewage is filtered in the membrane treatment system. The method is particularly suitable for treating sewage of with high concentration of pollutants, especially waste leachate with high COD, high ammonia nitrogen, and high total nitrogen.

The invention discloses integrated treatment equipment for rural domestic sewage. The integrated treatment equipment is formed by sequentially connecting an anoxic pond, a planktonic carrier high-efficiency bioreactor, a floating type sloping plate settling tank, a special plant ecological reactor and a clear water collecting pool, wherein a submersible mixer, an online pH meter and a DO tester are arranged in the anoxic pond; the online pH meter, the DO tester, an ultrasonic level gauge, a planktonic carrier, a micro-porous aerator, a Roots blower and a mixed-liquid reflux pump are arranged in the planktonic carrier high-efficiency bioreactor; floating slopping plate fillers, a sludge bucket and a sludge pump are arranged in the floating sloping plate settling tank; aquatic plants, a plant fixing bed, a water distribution area, polymer porous filler, a water production area, an ultrafine aerator, a bidirectional water distributor and the Roots blower are arranged in the special plantecological reactor; the clear water collecting pool is provided with a backwashing water pump. The equipment is required to have the advantages of low investment and running cost, simple process, convenience in maintenance, stable operation, high impact resisting load, high practicability and the like.