34results about How to "Achieve spatial separation" patented technology

The invention relates to a production method and device of fine-grained low-chloride rare earth carbonate. The production method is mainly characterized in that rare earth chloride and a carbonate solution are added in a concurrent flow feeding way on a designed special precipitation reaction device, the spatial separation of a reaction zone and a crystallization zone is realized by controlling the feeding speed and discharging speed and controlling the aging time of rare earth carbonate, and thus the double purposes of directly obtaining a fine-grained low-chloride rare earth carbonate product from a hydrochloric acid medium by precipitation and realizing continuous production are achieved. By adopting the production method and device provided by the invention, the fine-grained rare earth carbonate product with the chloride content of less than 50ppm can be directly obtained from the hydrochloric acid medium by using cheap ammonium bicarbonate, the precipitation reaction device has a simple structure, and the continuous production can be realized.

A landfill leachate treating process comprises the following steps: (1) filtering out suspended solids and impurities from landfill leachate, discharging the landfill leachate into a coagulative precipitation tank, carrying out coagulative precipitation on the leachate, and introducing sludge into a sludge concentration tank to obtain supernatant; (2) injecting the supernatant into a hydrolysis acidification pool to obtain a treating liquid I; (3) conveying the treating liquid I to a first-stage A / O pool, and controlling the DO to be 0.01-4.0 mg / l to obtain a treating liquid III; (4) enablingthe treating liquid III to enter a secondary sedimentation tank to obtain a treating liquid IV; (5) enabling the treating liquid IV to enter a secondary A / O pool, and controlling the DO to be 0.02-5mg / l so as to obtain a treating liquid VI; (6) enabling the treating liquid VI to enter an MBR membrane tank to realize cement separation to obtain ultrafiltrate, and enabling part of the ultrafiltrateto flow back to the secondary sedimentation tank; and (7) sequentially treating the ultrafiltrate obtained in the step (6) through a nanofiltration system and a reverse osmosis system, carrying out efficient denitrification treating to obtain a nanofiltration solution and a concentrated solution, sending the concentrated solution to a Fenton advanced oxidation system, and discharging the nanofiltration solution and the concentrated solution after reaching the standard. Nitrogen and phosphorus removal is more efficient, and the service life of the process is effectively prolonged.

The invention discloses an assembled type steel frame concrete box type unit structure system and a construction method thereof. The structure system comprises a foundation and an overground structure connected with the foundation; the overground structure comprises at least an upper-layer structure and a lower-layer structure which are vertically spliced through a steel frame; the steel frame is a groove-type horizontal steel frame which is preset on the spliced position of upper-layer and lower-layer wall face components and is embedded along the inner side of the bottom of the upper-layer wall face component in a through mode; a bottom vertical throwing rib of the upper-layer wall face component penetrates through the steel frame to be fastened through an upper flange plate sleeve; and a top vertical throwing rib of the lower-layer wall face component penetrates through the steel frame to be fastened through a lower flange plate sleeve. Box-type structure units of each layer of structure are connected into a whole in a mortise-tenon joint mode. The construction method of the structure system comprises the steps of designing and prefabricating of the box-type structure units, conveying of the box-type structure units to a site to be connected with a cast-in-situ part, connection between the box-type structure units, and the like. The assembly level of a building structure is improved, detachable connection is achieved, the construction speed is increased, and the wet construction on the site is reduced.

The invention discloses an in-situ soil body layered settlement monitoring device and method. The device comprises a circular base arranged on the top of an exploratory well and multiple settlement monitoring devices. Each settlement monitoring device comprises an anchoring mechanism, a settlement transmission mechanism and a settlement measuring mechanism, wherein the anchoring mechanism comprises a circular base and multiple steel nails, the settlement transmission mechanism comprises a measuring rope, a telescopic pipe and a protection pipe, and the settlement measuring mechanism comprisesa stand column, a pulley mechanism, a measuring scale and a balance weight. The method includes the following steps that firstly, the settlement measuring monitoring devices are installed; secondly, backfill consolidation is conducted; thirdly, the settlement measuring mechanisms are fixed and adjusted; and fourthly, layered settlement monitoring and data treatment are conducted. By means of the in-situ soil body layered settlement monitoring device and method, design is reasonable, the cost is low, time and labor are saved, installation is convenient, soil body deformation monitoring at different heights of an in-situ soil body is achieved, and practicability is high.

The invention discloses a partition control and point-by-point water inflow enhanced nitrogen and phosphorus removal (A / O / A)-MBR integrated process and a system thereof. A partition control and point-to-point water inlet operation mode is adopted, and the low C / N ratio domestic sewage is sequentially subjected to treatment processes comprising anaerobic phosphorus release treatment, aerobic phosphorus absorption and nitrification treatment, precipitation water outlet, denitrification nitrogen removal treatment and MBR nitrification and decarburization treatment according to the time sequence in a sewage treatment system. Partition control is carried out on the phosphorus removal process and the nitrogen removal process, space separation of phosphorus removal bacteria and nitrifying bacteria is achieved, the good growth environment of microorganisms in respective systems is guaranteed, and the problems of mud age contradiction, nitrate influence, complete separation of HRT and SRT and the like existing in a traditional process are solved; meanwhile, the problem of energy consumption of sewage treatment operation such as carbon source feeding is solved by adopting a point-by-point water inlet mode, and the purpose of efficient nitrogen and phosphorus removal is achieved. Meanwhile, the process has the advantages of good effluent quality, simple process, small occupied area, convenience in operation and the like.

The invention relates to an LED lighting unit with high thermal diffusivity and an adjustable light distribution light fitting applying the lighting unit. The invention relates the LED lighting unit which comprises a lamp body, an LED light source, an LED drive circuit board, a light transmission housing plate, a cover plate of the lamp body and end covers at the two sides of the lamp body; wherein, a plurality of LED light sources are arranged in the lamp body in array, the LED drive circuit board is arranged in the lamp body which is also provided with a plurality of rows of lattice-shaped heat conducting reinforcing rods that can effectively educe the LED light sources and the heat generated by the drive circuit board, and a revolving joint is arranged outside the end covers at the two sides of the lamp body; the adjustable light distribution light fitting comprises a mounting rack which is provided with a device that is fixedly connected a carrier and a device that is connected with the revolving joint of the LED lighting unit with high thermal diffusivity in an adjustable way. The LED lighting unit can ensure the service performance and the service life of the light fitting, improves the production efficiency and meets the requirements for distribution light in most of the time. The adjustable light distribution light fitting has convenient assembly, good universality, high installation efficiency, convenient maintenance and adjustable lighting angle.

The invention discloses a laser radar, and a method for realizing separation of a probe from a chassis of the laser radar. The laser radar and the method relate to the technical field of laser radars.The laser radar comprises the laser radar probe, the laser radar chassis and an optical fiber bundle, wherein the laser radar probe is an optical lens installed in the external environment in an exposed manner, the laser radar chassis is a chassis structure internally provided with an element generating a laser signal, an element receiving the laser signal and an electronic element processing thelaser signal, the chassis structure is isolated from the outside, and the optical fiber bundle connects the laser radar probe with the laser radar chassis. The method realizes the spatial separationof the probe from the chassis of the laser radar, so that the laser device, the detector, the electronic element and the like are placed in the chasses which is relatively isolated from the outside, thereby achieving temperature control, vibration reduction and dust isolation more easily. The exposed part of the probe is just the optical lens, the surface of the optical lens is easier to clean, the optical lens has high resistant to chemical corrosion, and the optical lens is resistant to changes in ambient temperature.

The invention discloses a technology and a device for efficiently removing nitrogen and phosphorus from urban sewage with a low carbon-nitrogen ratio. The technology comprises a process of excessivelyabsorbing phosphorus by phosphorus removing bacteria, a process of ammonia nitrogen nitrosification and a process of anaerobic ammonia oxidation, the processes are carried out synchronously in sequence, and continuous water input and continuous water output are realized. The device comprises a regulating tank, an anaerobic tank, an aerobic tank, a mid-sedimentation tank, a partial nitrification reactor, an anaerobic ammonium oxidation reactor and a final sedimentation tank which are connected in sequence. The technology has the advantages of being simple in process, short in total hydraulic retention time, low in aeration rate, low in energy consumption, high in biological concentration, good in effluent quality and convenient to operate and manage and occupying a small area, and has great guiding significance for development of a new technology for treating the urban sewage with the low carbon-nitrogen ratio and upgrading of an existing treatment technology.

Disclosed is back surface field GaSb thermal photovoltaic cell. The thermal photovoltaic cell comprises a substrate, a back electric field layer, a back electrode, an active region and a front electrode, wherein the back electric field layer is manufactured on the back surface of the substrate; the back electrode is manufactured on the back electric field layer; the active region is manufactured on the upper surface of the substrate; and the front electrode is manufactured in the middle of the front surface of the active region, wherein the size of the front electrode is smaller than that of the active region. According to the thermal photovoltaic cell, an nn+ junction is added on the back surface of the cell, and a high-low junction electric field is formed with the original built-in electric field, so that a hole barrier is provided, and the collection efficiency of photon-generated carriers is improved by utilizing energy band engineering; and meanwhile, due to the fact that the doping concentration near the back electrode is high, the width of the barrier region is smaller, and run through of the barrier is performed by electrons via a channel tunnel, so that better ohmic contact is formed between the GaSb and the back electrode metal, thereby improving the efficiency of the cell.

The invention provides a light emitting diode epitaxial wafer and a growth method thereof, and belongs to the technical field of semiconductors. The light emitting diode epitaxial wafer comprises a substrate, a gallium nitride buffer layer, an N-type semiconductor layer, a multi-quantum well layer and a P-type semiconductor layer, wherein the gallium nitride buffer layer, the N-type semiconductor layer, the multi-quantum well layer and the P-type semiconductor layer are sequentially stacked on the substrate. The multi-quantum well layer is prepared by adopting a molecular beam epitaxy method, and the light-emitting diode epitaxial wafer further comprises a SiO2 thin film layer arranged between the N-type semiconductor layer and the multi-quantum well layer, wherein the multi-quantum well layer is imprinted on the SiO2 thin film layer, and a part of the multi-quantum well layer penetrates through the SiO2 thin film layer to be in contact with the N-type semiconductor layer. According to the epitaxial wafer, the wavelength consistency of the epitaxial wafer can be ensured, and the luminous efficiency of a light-emitting diode is ensured.

The invention relates to a production method and device of fine-grained low-chloride rare earth carbonate. The production method is mainly characterized in that rare earth chloride and a carbonate solution are added in a concurrent flow feeding way on a designed special precipitation reaction device, the spatial separation of a reaction zone and a crystallization zone is realized by controlling the feeding speed and discharging speed and controlling the aging time of rare earth carbonate, and thus the double purposes of directly obtaining a fine-grained low-chloride rare earth carbonate product from a hydrochloric acid medium by precipitation and realizing continuous production are achieved. By adopting the production method and device provided by the invention, the fine-grained rare earth carbonate product with the chloride content of less than 50ppm can be directly obtained from the hydrochloric acid medium by using cheap ammonium bicarbonate, the precipitation reaction device has a simple structure, and the continuous production can be realized.

The invention discloses a netting hydrodynamic test device, which comprises a flat plate, wherein a plurality of spaced measuring devices are mounted on the top surface of the flat plate, a main frame is mounted on the bottom surface of the flat plate, the main frame structurally comprises a quadrilateral structure defined by two transverse rods and two vertical rods, the transverse rod located at the top is fixed to the bottom surface of the flat plate, a transverse supporting rod is installed between the two vertical rods, and an inclined supporting rod is installed at one end of the transverse supporting rod and the joint of the transverse rod and the vertical rod; and a plurality of supporting rods are sequentially installed on the vertical rod at intervals from top to bottom, a clamping ring is arranged at one end of each supporting rod and connected to the vertical rod through a fixing pin, a screw hole is formed in the other end of each supporting rod, a corresponding penetrating through hole is formed in the pipe wall of each screw hole, and a fixing cable penetrates through each penetrating through hole and is locked through a clamping pin. The netting is connected to a fixing cable, so that the device can be prevented from interfering incoming flow and incoming waves, and the test precision is improved; and meanwhile, the netting can be conveniently replaced in the test, and the test efficiency is improved.

The invention discloses a 5G-based cloud integrated high-intensity focused ultrasound telesurgery robot treatment system device and method. According to the invention, a control end is migrated to the cloud by utilizing the capabilities of large bandwidth, low time delay, high reliability and network slicing of 5G, and the 5G network is used for replacing a traditional cable to realize communication connection with a high-intensity focused ultrasound surgical robot at a treatment end, so that the space separation of doctors and patients is realized; and a doctor can carry out a remote operation which is not different from a traditional high-intensity focused ultrasound operation in a 5G environment. Meanwhile, software and hardware of the high-intensity focused ultrasound telesurgery robot body are decoupled through 5G-based cloud-side-end integration, so that the cost is reduced, more primary hospitals have the ability to purchase, and large-scale deployment becomes possible. The problems of difficult and expensive medical treatment caused by unbalanced distribution of medical resources can be reasonably solved to a certain extent.

The invention discloses a preparation method of TiO2 nanotubes with a controllable tube wall thickness, the preparation method is characterized by comprising the following steps of: (1) sequentially adding acetylacetone and tetrabutyl titanate into absolute ethyl alcohol to obtain a solution A; (2) adding polyvinyl pyrrolidone to the solution A to be completely dissolved to obtain a solution B; (3) dripping liquid paraffin into the solution B, and stirring for 48h to obtain a solution C; (4) filling the solution C into a syringe, performing electrostatic spinning under certain conditions, andcollecting a spinning product by using a stainless steel disc; and (5) after the spinning product is dried, calcining the spinning product at 500 DEG C in air atmosphere to obtain the TiO 2 nanotubes.According to the invention, the TiO2 nanotubes with different tube wall thicknesses are prepared by changing the ratio of the tetrabutyl titanate, the polyvinyl pyrrolidone and the liquid paraffin, and the light absorption capacity of the TiO2 nanotubes is further regulated and controlled.

The invention belongs to the field of catalysts, and discloses a preparation method and application of a ZnIn2S4 nanosheet coated BiVO4 microrod core-shell heterojunction catalyst. The catalyst is synthesized by an oil bath method, and the preparation method comprises the following steps: adding BiVO4, ZnCl2, InCl3. 4H2O and thioacetamide into diluted hydrochloric acid, adding a certain amount of glycerol, putting into a round-bottom flask, reacting for a certain time at a certain temperature, and centrifuging, washing and drying the obtained product to obtain the brown ZnIn2S4 / BiVO4 composite material. The flaky ZnIn2S4 material grows on the mulberry-shaped BiVO4 surface in situ, and the ZnIn2S4 material and the mulberry-shaped BiVO4 surface are in close contact, so that effective separation and transfer of photo-generated charges can be realized. And the light absorption range of the photocatalyst is widened by utilizing the matched band gap of the two, so that the photocatalytic activity of the material is improved. The prepared composite material can be applied to catalytic degradation of tetracycline TC under visible light. The method is simple in operation process, short in material synthesis period and mild in reaction condition.

The invention relates to a substrate for an LED submount, having a plurality of mounting slots on the substrate surface thereof, and a plurality of pairs, each consisting of an electric anode connection and an electric cathode connection, wherein the anode connections are disposed on a first side section of the substrate surface, and the cathode connections are disposed on a second side section of the substrate surface, comprising at least one connection distribution conductor, leading from a mounting slot to an electric connection past at least two further mounting slots.

An electrical contacting (1) between a surrounding wiring (2) and a conductor region (3), wherein the conductor region (3) is arranged in a conductor layer (4) above an SOI wafer (5) or SOI chip (5),wherein a cover layer (6) is arranged above the conductor layer (4) and below the surrounding wiring (2), characterized in that the cover layer (6) has a contacting region (7), wherein the contactingregion (7) is isolated from the rest of the cover layer (6) by means of a first recess arrangement (8), wherein an opening (9) is formed at least in the contacting region (7), wherein a metallic material (10) is arranged in the opening (9), the metallic material (10) connecting the surrounding wiring (2) and the conductor region (3).

The invention provides a demountable independent vacuum cavity with an in-situ measurement effect. The demountable independent vacuum cavity is composed of a main cavity body (21), valves (22), flanges (23), an observation window (24), an ion gauge (25), a sample holder (32), a sample heating device (33), a magnetic rod (34), an SAES getter pump (42) and a small cavity body (41) where the SAES getter pump (42) is located. The demountable independent vacuum cavity is a stainless steel independent cavity for transferring samples under the ultrahigh vacuum condition, and the effect similar to in-situ measurement is achieved. The cavity can integrate material growing equipment, a measurement instrument and other resources, and cooperation opportunities of different laboratories are effectively increased. The demountable independent vacuum cavity is simple in design, low in cost and strong in function, and simple annealing treatment can be carried out on the samples. Spatial isolation of the material growing equipment and the measurement instrument is achieved, and greater possibility is brought to experimental study and cooperation.

The invention discloses an oxygen hole-containing BiOBr / TiO2 nanotube array composite electrode and a preparation method thereof, and application of the BiOBr / TiO2 nanotube array composite electrode to photoelectrocatalytic nitrogen fixation. The preparation method comprises the following steps: synthesizing vO-BiOBr powder by adopting a hydrothermal method, preparing a TiO2 nanotube array on a Tisubstrate by adopting an electrochemical anodic oxidation method, and loading the vO-BiOBr powder on the TiO2 nanotube array by adopting an electrophoretic deposition method to prepare the vO-BiOBr / TiO2 nanotube array composite electrode. The prepared vO-BiOBr / TiO2 nanotube array composite electrode is used as a working electrode, a Pt sheet is used as a counter electrode, Ag / AgCl is used as a reference electrode, an aqueous H2SO4 solution is used as an electrolyte solution, and a photoelectrocatalytic synthesis ammonia reaction can be carried out under the irradiation of a xenon lamp.

The invention discloses a light beam drift compensation device without a mechanical structure and an implementation method thereof, and the method achieves the light beam drift compensation through the sensing of probe structure light, a programmable phase hologram and the modulation of wavelength-dependent and polarization-dependent liquid crystal light. The device comprises a dichroscope, a beamcombiner, a spatial light modulator, a CCD camera, a computer and the like. The beam combiner / dichroscope is used for coaxially combining signal light and beacon light, the first spatial light modulator is used for only modulating the beacon light to generate petal-shaped probe structured light distributed in the angular direction, and the petal-shaped probe structured light is recorded by the CCD camera to realize drift amount vector perception and send the drift amount vector perception to the computer; and the computer synchronously controls the relative positions of the phase holograms ofthe first spatial light modulator and the second spatial light modulator and the blazed grating period to realize light beam drift compensation. A mechanical displacement driving device is not needed, the compensation precision is greatly improved, the response speed is greatly increased, the service life is greatly prolonged, and the method is a reliable scheme for free space optical communication beam drift compensation.

The disclosure provides a light-emitting diode epitaxial wafer and a growth method thereof, belonging to the technical field of semiconductors. The light-emitting diode epitaxial wafer includes a substrate, and a gallium nitride buffer layer, an N-type semiconductor layer, a multi-quantum well layer and a P-type semiconductor layer sequentially stacked on the substrate, and the multi-quantum well layer is made of molecular prepared by beam epitaxy, the light emitting diode epitaxial wafer also includes SiO disposed between the N-type semiconductor layer and the multiple quantum well layer 2 thin film layer, the MQW layer is imprinted on the SiO 2 On the thin film layer, and part of the multi-quantum well layer passes through the SiO 2 The thin film layer is in contact with the N-type semiconductor layer. The epitaxial wafer can ensure the wavelength consistency of the epitaxial wafer and the luminous efficiency of the light emitting diode.

The invention belongs to the technical field of Internet of Things equipment storage and relates to terminal storage equipment for Internet of Things science and technology. In order to solve the problem that storage equipment does not have the fireproof capacity in the prior art,the invention provides the following technical schemes: the terminal storage equipment comprises a storage cabinet and an isolation plate fixed in the storage cabinet, a plurality of rear plates fixed to the rear wall of the interior of the storage cabinet are arranged above the isolation plate at equal intervals, a stepping motor is fixed at the lower side of the isolation plate, an output shaft of the stepping motor penetrates through the isolation plate and is fixedly connected with a long round rod penetrating through the multiple rear plates, a containing plate is arranged on the front side of each rear plate, a blocking plate is arranged on the lower side of each containing plate in a sliding mode, and a first rack is fixed to the lower side of each blocking plate. The equipment can be isolated, fire spreading is avoided; fire extinguishing treatment can be directly carried out; and the heat dissipation effect can be accelerated during normal use. The equipment is mainly applied to Internet of Things terminal equipment storage cabinets.

Disclosed is back surface field GaSb thermal photovoltaic cell. The thermal photovoltaic cell comprises a substrate, a back electric field layer, a back electrode, an active region and a front electrode, wherein the back electric field layer is manufactured on the back surface of the substrate; the back electrode is manufactured on the back electric field layer; the active region is manufactured on the upper surface of the substrate; and the front electrode is manufactured in the middle of the front surface of the active region, wherein the size of the front electrode is smaller than that of the active region. According to the thermal photovoltaic cell, an nn+ junction is added on the back surface of the cell, and a high-low junction electric field is formed with the original built-in electric field, so that a hole barrier is provided, and the collection efficiency of photon-generated carriers is improved by utilizing energy band engineering; and meanwhile, due to the fact that the doping concentration near the back electrode is high, the width of the barrier region is smaller, and run through of the barrier is performed by electrons via a channel tunnel, so that better ohmic contact is formed between the GaSb and the back electrode metal, thereby improving the efficiency of the cell.

The invention relates to a device and method for synchronously removing sulfate, nitrite and organic matter in waste water. The device consists of water inlet, reactor and three-phase separator from bottom to top. The three-phase separator includes gas collecting hood, sludge settling unit, exhaust valve, water outlet and inspection port; one end of the reactor is connected with a water distribution plate and The water inlet is connected, and the other end is connected with the sludge settling unit; the water distribution plate takes the center point as the center of the circle, and a water hole is arranged outside the circular range with a diameter of 0.5-1.5cm; the height-to-diameter ratio of the reactor is 14: 1‑26:1; the volume ratio of the reactor volume to the three-phase separator is 3:1‑3.5:1; the ratio of the height of the reactor to the height of the three-phase separator is 7:3‑8:2. The invention realizes the spatial separation of functional bacteria through the height-to-diameter ratio, water distribution plate and segmental domestication, so that multiple pollutants can be removed synchronously in one reactor; and no filler is added in the reaction zone, which ensures the efficient transmission of elemental sulfur particles , reduce secondary pollution.

The invention discloses an integrated heating type germanium waveguide thermo-optical modulator structure and a preparation method thereof. The integrated heating type germanium waveguide thermo-optical modulator structure comprises a substrate; an intrinsic germanium thin film which is positioned on the substrate; a doped germanium thin film layer which is located on the intrinsic germanium thinfilm, wherein a first germanium waveguide, an optical beam splitter, a second germanium waveguide, a third germanium waveguide, an optical beam combiner and a fourth germanium waveguide are etched onan epitaxial layer formed by the intrinsic germanium film and the doped germanium film layer. The space separation of photon transmission and carrier transmission is realized, the heating efficiency is effectively improved, and the transmission loss is reduced.

The invention discloses an error demodulation coherent beam combination laser system. The system comprises a laser beam array, a small diameter reflecting array, a focusing unit, a beam combination far field detecting unit and a sub-beam far field positioning unit, wherein the laser beam array comprises a plurality of sub-beams; the small diameter reflecting array comprises a plurality of small diameter reflecting lenses; the focusing unit comprises a reflecting lens and a focusing lens; the beam combination far field detecting unit comprises a beam splitter, a rotary light selecting plate, a focusing lens and a CCD camera; the sub-beam far field positioning unit comprises a reflecting lens, an array lens, a focusing lens and a CCD camera. The system can realize precision detection of the two-dimensional angle error of each sub-beam in a relevant beam combination laser system and the precision detection of back and forth vibration among sub-beams at the same time, and solves the problem that detection and control are difficult because the quantity of sub-beams and errors are large in the relevant beam combination laser system.

The invention discloses an integrated process and a system for enhancing nitrogen and phosphorus removal (A / O / A)-MBR by zoning control and sub-point water inflow. The C / N ratio of domestic sewage is chronologically followed by anaerobic phosphorus release treatment, aerobic phosphorus absorption and nitrification treatment, precipitation effluent, denitrification and denitrification treatment and MBR nitrification and decarbonization treatment. The invention realizes the spatial separation of phosphorus removal bacteria and nitrifying bacteria by controlling the phosphorus removal and nitrogen removal processes by zone, ensures a good growth environment for microorganisms in their respective systems, and solves the contradiction of mud age and nitrate existing in the traditional process. At the same time, the energy consumption problem of sewage treatment operation such as adding carbon source is solved by the method of water inflow at different points, so as to achieve the purpose of high-efficiency nitrogen and phosphorus removal. At the same time, it has the advantages of good water quality, simple process, small footprint and convenient operation.

The invention relates to a transmission for a motor vehicle, comprising multiple gears, a housing (1), an internal space that is surrounded by the housing (1), at least one gear shifting clutch, whichis located in the internal space and via which a gear can be shifted, and a shifting device (10) which functions to direct an external actuation force for shifting, which is acting outside the housing (1), to the gear shifting clutch, wherein the shifting device (10) has at least one internal shifting part located in the internal space, a first introduction element (11a) which engages through a first opening (5) provided in the housing and functions to direct the external actuation force for shifting the gear to the internal shifting part, and a shifting mass (21) arranged outside the housing, which is moved during the shifting of the gear. The invention is characterised in that a connection element (20) that is different from the first introduction element (11a) is provided, with which the shifting mass (21) is connected to the internal shifting part, and the connection element (20) engages into the internal space through a second opening (6) in the housing (1) that is different fromthe first opening.

The invention relates to a device and a method for synchronously removing sulfate, nitrite and organic matters in wastewater. The device sequentially comprises a water inlet device, a reactor and a three-phase separator from bottom to top, wherein the three-phase separator comprises a gas collecting hood, a sludge settling unit, an exhaust valve, a water outlet and an inspection opening; one end of the reactor is connected with the water inlet device through a water distribution plate, and the other end is connected with the sludge settling unit; water passing holes are formed in the water distribution plate by taking the central point as a circle center and outside a circular range with the diameter of 0.5-1.5 cm; the height-diameter ratio of the reactor is 14: 1-26: 1; the volume ratio of the reactor to the three-phase separator is 3: 1-3.5: 1; and the ratio of the height of the reactor to the height of the three-phase separator is 7: 3-8: 2. Space separation of functional bacteria is realized through a height-diameter ratio, the water distribution plate and sectional domestication so that multiple pollutants are synchronously removed in one reactor; no filler is added into the reaction zone so that efficient transmission of elemental sulfur particles is guaranteed, and secondary pollution is reduced.