50 results about "Membrane region" patented technology

A Peristaltic micropump includes a first membrane region with a first piezo-actor for actuating the first membrane region, a second membrane region with a second piezo-actor for actuating a second membrane region, and a third membrane region with a third piezo-actor for actuating the third membrane region. A pump body forms, together with the first membrane region, a first valve whose passage opening is open in the non-actuated state of the first membrane region and whose passage opening may be closed by actuating the first membrane region. The pump body forms, together with the second membrane region, a pumping chamber whose volume may be decreased by actuating the second membrane region. The pump body forms, together with the third membrane region, a second valve whose passage opening is open in the non-actuated state of the third membrane region and whose passage opening may be closed by actuating the third membrane region. The first and the second valve are fluidically connected to the pumping chamber.

A suspension-type photocatalytic oxidizing equipment for treating water is composed of reactor divided into lamp region and membrane region by partition, air supply unit, water feeding system and water discharge system. A minipore aerating chamber is respectively arranged at bottoms of said lamp and membrane regions for preventing deposition of catalyst. Its advantages are high efficiency to decompose organic substances, no blocking to membrane, high reactino speed, and long service period.

A piezoelectric thin-film resonator includes a lower electrode formed on a substrate to define a rounded dome-shaped cavity between the lower electrode and the substrate, a piezoelectric film provided on the lower electrode, and an upper electrode provided on the piezoelectric film. A membrane region is an overlapping region of the lower electrode and the upper electrode interposing the piezoelectric film and a projected area of the cavity onto the substrate includes the membrane region.

A filter includes one or a plurality of parallel resonators coupled in parallel and one or a plurality of a film bulk acoustic resonators coupled in series, the film bulk acoustic resonator having a substrate, a lower electrode, a piezoelectric membrane, and an upper electrode, wherein: at least one of the lower electrode and the upper electrode has a thick membrane region having a thickness larger than that of a center portion of a resonance region at an edge of the resonance region, the resonance region being a region where the lower electrode and the upper electrode face with each other through the piezoelectric membrane; and a width of the thick membrane region is smaller than a wavelength of an acoustic wave propagating in a direction crossing a thickness direction of the piezoelectric membrane.

A biologic method for treating the reactive dye sewage with white rot fungus membrane includes such steps as adding the white rot fungus into biochemical filler treating region, starting aerator for supplying oxygen, filling said sewage in the region, passing through steel wire mesh and into membrane region, and pumping the cleaned water to water outlet pipe via hollow fiber membrane.

A process for manufacturing a MEMS device, wherein a bottom silicon region is formed on a substrate and on an insulating layer; a sacrificial region of dielectric is formed on the bottom region; a membrane region, of semiconductor material, is epitaxially grown on the sacrificial region; the membrane region is dug down to the sacrificial region so as to form through apertures; the side wall and the bottom of the apertures are completely coated in a conformal way with a porous material layer; at least one portion of the sacrificial region is selectively removed through the porous material layer and forms a cavity; and the apertures are filled with filling material so as to form a monolithic membrane suspended above the cavity.

A microelectromechanical sensing structure having a membrane region including a membrane that undergoes deformation as a function of a pressure and a first actuator that is controlled in a first operating mode and a second operating mode, the first actuator being such that, when it operates in the second operating mode, it contacts the membrane region and deforms the membrane in a way different from when it operates in the first operating mode.

The invention discloses a method for changing heating temperature in an electric heating membrane region, and a miniature electric heating piece produced by utilizing the method. The method is characterized in that through holes are formed in a heating region of an electric heating membrane, and the heating temperature of the region is changed through controlling density or hole diameter sizes ofthe through holes in different regions. The miniature electric heating piece comprises a thin sheet material made of a conductive material, wherein an initiating end and a tail end of the sheet material are provided with electrode regions, the sheet material is accessed to a circuit to generate heat by means of the electrode regions, and through holes distributed in an array are formed in a regionbetween the electrode regions of the sheet material. The method disclosed by the invention is simple, the process is simple, the miniature electric heating piece has the advantages of fast heating speed compared with a heating piece product, and the heating speed of the miniature electric heating piece is at least doubled compared with a whole piece of heating sheet material without forming through holes; in addition, the heating is even, and the whole heating sheet material can heat evenly.

The invention discloses a combined test reagent card for cytomegalovirus and rubella virus, which comprises a card cover, a card bottom and a test strip. The test strip is provided with a test sample region, a gold label region, a nitrocellulose membrane region and a water absorption region sequentially; and the nitrocellulose membrane region is provided with a quality-controlling line coated with goat anti mouse IgG, a testing line coated with cytomegalovirus antigen and a testing line coated with rubella virus antigen sequentially. The technical scheme adopted by the invention can test cytomegalovirus IgG antibody and rubella virus IgG antibody in the sample simultaneously and the total accordance rate of the testing result is higher, so the application prospect is wide. Compared with the detection of IgM antibody, the combined test reagent card for the cytomegalovirus and the rubella virus tests the IgG antibody; the IgG antibody can be carried for the whole life and is only associated with acute infection; and the accuracy is high.

A method and structure for forming subfield regions includes mechanical definition of the substrate through machining or mold forming. The subfield regions are filled with a sacrificial layer before the thin membranes are deposited. Slots are mechanically machined through a substrate (the slots have dimensions of membrane subfields) and filled with a sacrificial material. The substrate is planarized. A membrane material is deposited over the substrate and patterned. The sacrificial layer is then removed. A mold can be utilized to form the slotted substrate in place of the machining operation.

We disclose herewith a heterostructure-based sensor comprising a substrate comprising an etched portion and a substrate portion; a device region located on the etched portion and the substrate portion; the device region comprising at least one membrane region which is an area over the etched portion of the substrate. At least one heterostructure-based element is located at least partially within or on the at least one membrane region, the heterostructure-based element comprising at least one two dimensional (2D) carrier gas.

The invention relates to a device for cleaning a membrane, comprising two electrode plates and a filter unit. The filter unit is configured between the two electrode plates and comprises a supporting plate and a membrane which is configured on the supporting plate. By generating electrical field in the membrane region and carrying out backwashing on the membrane, scale deposit on the membrane can be cleared efficiently. The invention enables the cleaned membrane to restore to flux that is closer to the initial state, effectively eliminates incrustation on the membrane and biologic block to discharge the incrustation efficiently so that the membrane can be used efficiently to solve the problem of the uneconomical phenomenon that the membrane is obsolete.

The invention relates to the technical field of treating sewage by utilizing a biological technology and discloses an energy-saving type treatment device for MBR (membrane biological reactor) oxidation ditch sewage. The energy-saving type treatment device comprises an oxidization ditch biochemical reaction region and a membrane region, wherein a straight gallery of the membrane region and an S-shaped gallery of the oxidization ditch biological reaction region are in butt joint from the beginning to the end to form a circulating gallery; a penetrating tracery wall flat plate is overhead arranged on the bottom of the membrane region and used for dividing the membrane region into a membrane tank and a water distribution region from top to bottom; water distribution holes are uniformly distributed in the penetrating tracery wall flat plate; a membrane region water inlet is formed in the front end of the water distribution region; a membrane assembly and a water outlet tube are arranged in the membrane tank; the oxidization ditch biological reaction region is equipped with a water inlet device, a residual sludge outlet, a pushing device and an aeration device. According to the energy-saving type treatment device disclosed by the invention, the oxidization ditch process is organically combined with the membrane biological reactor; by utilizing hydraulic operation characteristics of large-flow circulating plug-flow state of the oxidization ditch process, mixed liquor in a groove is circulated and quickly flows through an MBR membrane set to realize solid-liquid separation, and therefore, the energy-saving type treatment device has the advantages of simple and compact structure, low operation energy consumption, small floor area, less investment, high pollutant removing efficiency and the like.

A method for preparing a bacterial agent for removing ammonia-nitrogen, including: 1) activating a mixed microbial preparation including heterotrophic nitrification bacteria and aerobic denitrification bacteria; 2) inoculating the microbial preparation including heterotrophic nitrification bacteria and the aerobic denitrification bacteria to a membrane region including a double-layered filler; 3) introducing a culture solution of the microbial preparation to the membrane region from one side of the membrane region at a certain pressure and a certain flow rate to cultivate bacteria and discharging metabolites produced by the microbial preparation from the other side of the membrane region; 4) centrifuging a bacterial liquid obtained from cultivation to yield a concentrated bacterial suspension; and 5) adding a protecting agent to the concentrated bacterial suspension, uniformly dry spraying a resulting mixture to a sterilized carrier to yield a bacterial agent, and sealing the bacterial agent for storage.

The invention provides a device and a method for treating and purifying high-concentration industrial sewage in a membrane coupling way. Raw water primarily enters a membrane evaporation tank for primary circulation evaporation, alkali is added into overflowed concentrated water, primary reaction filtration is performed in an immersing ultrafiltration reactor, filtered water enters a secondary membrane evaporation tank for secondary circulation evaporation after being pumped by a pump, and overflowed concentrated water enters a secondary immersing ultrafiltration reactor for reaction filtration after alkali and flocculating agent are added. A membrane evaporation assembly adopts a hollow fiber membrane assembly with a casing, and is vertically immersed into or half immersed into an evaporation tank, hot water enters from a lower opening of the hollow fiber membrane assembly through the pumping of the circulation pump and is upwards pumped out through a tube pass, and the hot water is circulated and evaporated through a reducing membrane. The membrane evaporation tanks are internally provided with baffle plates, and supernatant liquid after being settled primarily enters membrane regions through the baffle plate, thereby the membrane pollution is reduced. The invention greatly reduces the sewage emission, lowers the operation cost of a membrane evaporation and concentration system, realizes the purification and the recycling of the industrial sewage and achieves the purposes of saving water and reducing the emission. The invention can concentrate the reverse osmosis by about 100 times usually and can greatly reduce the sewage emission. Concentrated liquid and sludge can be directly dried by a general evaporator so as to achieve zero emission.

The invention provides an efficient sewage treatment system. The efficient sewage treatment system comprises a pretreatment building structure, a biological tank, a membrane tank and a disinfecting tank which are communicated through pipelines; an anaerobic region, an anoxic region and an aerobic region are sequentially arranged in the biological tank along the flow direction; the membrane tank comprises a membrane tank wall body, a membrane tank aerobic region, a membrane region and a sludge reflux region are sequentially arranged in the membrane tank wall body, and the membrane tank aerobic region and the membrane region are separated through a first partition wall; the membrane region and the sludge reflux region are separated through a second partition wall; a water inlet pipe is arranged on the membrane tank wall body of the membrane tank aerobic region; multiple groups of micro-hole aeration devices are arranged in the membrane tank aerobic region; multiple groups of membrane units are arranged in the membrane region; two groups of adjacent membrane units are separated through a wall body. The efficient sewage treatment system is remolded by virtue of an existing sewage treatment plant; when the occupied area is not increased and the production is not stopped, the water quality of effluent is improved, the treatment capacity is doubled, and the sewage treatment efficiency is improved.