253 results about "Flat sheet membrane" patented technology

The invention discloses a desulfurizing tower and a desulfurizing method based on enhanced absorption of flat sheet membrane internals. The desulfurizing tower comprises a desulfurizing tower body, and a liquid distributor, the flat sheet membrane internals and fractal internals which are sequentially arranged in the desulfurizing tower body from top to bottom, according to the invention, high-concentration sulfur-containing gas is subjected to rapid pre-desulfurization at the tower bottom by utilizing the high turbulence characteristic of the fractal internals, so that the sulfide concentration can be instantly reduced, and the gas flow distribution is optimized; and the pre-desulfurized gas then enters a high-efficiency fine desulfurization area formed by the flat sheet membrane internals. According to the flat sheet membrane internal part, a plurality of vertically arranged flat sheets are utilized to form a fixed gas flowing channel, so that transverse movement of gas molecules is limited, and gas distribution is more uniform. And meanwhile, a layer of uniform and continuous absorbent liquid film is formed on the surface of the flat plate, so that the gas-liquid contact area is remarkably increased, and high efficiency and low energy consumption are achieved through full countercurrent contact and efficient gas-liquid mass transfer of gas and the absorbent liquid film under extremely low pressure drop.

The invention belongs to the technical field of sewage treatment and membrane separation, and provides an in-situ nondestructive membrane pollution detection system and method based on an ultrasonic transmission signal, and the system comprises an ultrasonic excitation module which is used for generating a sine wave excitation signal which penetrates through a membrane body to excite the ultrasonic transmission signal for pollution detection; the signal processing module is used for continuously collecting and preprocessing ultrasonic transmission signals of the clean membrane body and the membrane bodies with different pollution degrees, extracting ultrasonic transmission signal characteristics under different pollution degrees, and establishing a pollution thickness-signal characteristic mapping model; wherein the ultrasonic transmission signal features comprise a time-frequency domain energy gravity center feature and a frequency attenuation spectrum slope feature; and the pollution detection module is used for judging the pollution stage of the membrane body to be detected based on the pollution thickness-signal feature mapping model, and completing in-situ nondestructive membrane pollution detection. According to the technical scheme, the sludge pollution state in the ceramic membrane and flat membrane filtering process can be monitored in real time, and early warning and pollution dynamic tracking are achieved.

The invention relates to the field of new materials, and discloses a red mud-based ceramic flat sheet membrane and a preparation method thereof. The red mud-based ceramic flat sheet membrane comprises a substrate and a separation layer integrally attached to the surface of the substrate, the matrix is prepared from the following raw materials in parts by weight: 2000 to 4000 parts of Al2O3 powder with the average particle size of 5000nm, 200 to 350 parts of corn starch, 300 to 500 parts of red mud, 400 to 600 parts of kaolin and 2 to 8 parts of polyvinyl alcohol; the separation layer is prepared from the following raw materials in parts by weight: 4-10 parts of Al2O3 powder with the average particle size of 5000nm, 1-3 parts of a dispersing agent, 0.1-0.3 part of a defoaming agent and 1-3 parts of polyvinyl alcohol. The red-mud-based ceramic flat sheet membrane has good physical properties, the preparation method is scientific and reasonable, and the red-mud-based ceramic flat sheet membrane has the characteristics of short production period, low raw material and sintering cost and the like.

The invention discloses a flat plate membrane internal part for an absorption tower and the absorption tower. The flat plate membrane internal part comprises a plurality of vertically arranged flat plates and a supporting assembly for supporting and fixing the flat plates, a flow channel is formed between adjacent flat plates; the flat sheet membrane internal part comprises the following three structures: (I) the surface of a flat sheet is provided with continuous convex or continuous groove lines; the supporting assembly is an external frame; (2) discontinuous raised lines are arranged on the surface of the flat plate; the supporting assembly is an external frame; and (3) the supporting assembly comprises a plurality of connecting columns, and the adjacent flat plates are supported and fixed through the connecting columns arranged in a staggered mode. A fixed flowing channel in the flat sheet membrane internal part structure limits transverse movement of gas molecules, and uniform gas-liquid countercurrent contact is achieved. Meanwhile, by optimizing surface geometric lines and arrangement modes of the flat plates and the form of the supporting assembly, the gas-liquid contact area is further increased, the gas-liquid contact time is further prolonged, the gas-liquid mass transfer efficiency in the tower is improved, the pressure drop in the tower is reduced, and the energy consumption of the system is reduced.

The invention discloses a deep desulfurization device and process based on an adjustable flat sheet membrane and intelligent cooperative control, the deep desulfurization device comprises a desulfurization tower and an intelligent adjustment and control system, a variable-configuration flat sheet absorption membrane device is arranged in the desulfurization tower body, and the variable-configuration flat sheet absorption membrane device is formed by arranging a plurality of groups of hydrophilic corrosion-resistant flat sheets in parallel; a plurality of blades with adjustable angles are uniformly distributed on one side or two sides of the flat plate, and can simultaneously drive the blades to synchronously and accurately rotate under the control of a motor driven by an intelligent control driver, so that the device can actively adjust the geometrical morphology and fluid mechanics conditions of a gas channel according to real-time working conditions; meanwhile, by means of the design of an absorbent circulation loop in the tower, the flow of the absorbent entering the desulfurization tower is dynamically adjusted, and therefore rapid response to working condition fluctuation and online optimization of the desulfurization process are achieved.

The invention relates to a poly (ether) sulfuryl block copolymer integrated nanofiltration membrane and a preparation method and application thereof, and belongs to the technical field of high polymer materials, and the preparation method comprises the following steps: adding an additive with reaction active sites into a membrane casting solution, adding another substance capable of carrying out a cross-linking reaction with the additive in the membrane casting solution into a coagulating bath, and carrying out a cross-linking reaction with the additive in the membrane casting solution to obtain the poly (ether) sulfuryl block copolymer integrated nanofiltration membrane. Preparing a flat sheet membrane through a non-solvent induced phase separation technology; the compact hollow fiber nanofiltration membrane is integrally prepared on line by using a double-layer spinning nozzle through dry spraying and wet spinning by taking a membrane casting solution added with a monomer with reaction activity as an inner layer and taking a solution containing another substance capable of being subjected to cross-linking reaction with the monomer with reaction activity in the membrane casting solution as an outer layer. The method disclosed by the invention has the characteristics of simple process, simplicity and convenience in operation, short preparation period and environmental friendliness, and compared with a traditional membrane preparation process, the method is more favorable for preparing the high-flux and high-interception nanofiltration membrane.

The invention provides a ceramic flat sheet membrane end seal bonding surface roughening treatment device, and relates to the technical field of flat sheet ceramic membrane manufacturing, the ceramic flat sheet membrane end seal bonding surface roughening treatment device comprises a fixing plate, two grooves are formed in the outer wall of the fixing plate, connecting rods are slidably connected to the positions, corresponding to the grooves, of the outer wall of the fixing plate, and fixers are fixedly connected to the outer walls of the connecting rods; a pressure sensor is installed on the outer wall of the bottom end of the fixator, supporting plates are fixedly connected to the outer walls of the two sides of the fixing plate, adjusters are installed on the outer walls of the supporting plates, adjusting rods are fixedly connected to the outer walls of the adjusters, and a plurality of threaded holes are formed in the outer walls of the adjusting rods. According to the device, the groove structure of the continuous sinusoidal waveform structure similar to the gecko sole line is adopted, the binding force between the polymer and the plastic end seal can be improved to a great extent, the pressure sensor and other structures are additionally arranged, the machining state of the device can be detected in real time, and therefore the practicability of the device is higher.

The utility model relates to a ceramic flat sheet membrane end glue injection mold which comprises a base installed on a workbench, a glue injection mold box is inserted into the top of the base, a positioning column is arranged at one end of the bottom of the glue injection mold box, a handle is arranged at the other end of the bottom of the glue injection mold box, and a limiting mechanism for limiting the fixed glue injection mold box is arranged on the base. Supporting beams are correspondingly arranged at the tops of the portions, on the two sides of the base, of the workbench, a support is installed on the supporting beams, a pressing mechanism is installed on the support, the top of the glue injection mold box is provided with an opening, a circle of annular boss is arranged on the lower portion of the inner wall of the glue injection mold box, and the inner wall, located above the boss, of the glue injection mold box is sequentially provided with a first chamfering face, a vertical face and a second chamfering face from top to bottom. The bottom of the flat membrane is inserted into the glue injection mold box and is supported by a boss. According to the utility model, the problem that a sealing ring must be used when the end part of the flat sheet membrane is sealed with glue is solved, the material cost of the sealing ring and the labor cost during installation are reduced, the top of the glue injection mold box does not need to be sealed, the glue injection operation is simple and convenient, and the use is convenient.

The invention discloses a method for combining a filter device by using plug-in mounting type flat sheet membrane components, and the filter device and a filter system formed by combining the plug-in mounting type flat sheet membrane components. The plug-in mounting type flat sheet membrane components comprise I-shaped plug-in mounting type flat sheet membrane components and II-shaped plug-in mounting type flat sheet membrane components; each of the I-type plug-in type flat membrane component and the II-type plug-in type flat membrane component comprises an upper connecting piece, a lower connecting piece, a groove-shaped plate and a plurality of membranes, two ends of the groove-shaped plate are detachably connected with the upper connecting piece and the lower connecting piece, so that the upper connecting piece and the lower connecting piece are relatively fixed, and the plurality of membranes are fixed between the upper connecting piece and the lower connecting piece; a water collecting box is also arranged at the upper end of the upper connecting piece of the I-shaped plug-in mounting type flat sheet membrane component, and is communicated with water outlets of the plurality of membranes; at least two of a filtering device I, a filtering device II and a filtering device III can be formed by combining the I-shaped plug-in mounting type flat sheet membrane component and the II-shaped plug-in mounting type flat sheet membrane component. The filter device and the filter system with three different structures can be combined according to different use occasions, so that the filter device and the filter system are more convenient to mount and maintain and higher in adaptability.

The invention discloses a flat sheet membrane filtering device. A containing cavity is formed in a membrane shell; the membrane filtration assembly is arranged in the accommodating cavity, the membrane filtration assembly comprises a plurality of filtration elements consisting of membranes and flow guide discs, and the membranes are mounted between every two adjacent flow guide discs; the central rod penetrates through the diaphragm and the flow guide disc; the connecting assembly is arranged in the accommodating cavity and is used for connecting two adjacent membrane filtration assemblies; the quick-release end cover assemblies are arranged at the two ends of the membrane shell and are used for sealing and fastening the membrane filtration assembly; two ends of the membrane shell are respectively provided with a first water inlet and an Nth water outlet, the first water inlet is provided with a first water outlet, and the Nth water outlet is provided with an Nth water inlet; and an nth water inlet and an nth water outlet are respectively formed in two ends of each membrane filtering component in the middle section of the membrane shell. The problems that in the prior art, the structure is complex, maintenance is difficult, water flow distribution is uneven, the filtering efficiency is low, and energy consumption and operation cost are high are solved.

The invention belongs to the technical field of gas separation membranes, and discloses a novel polymer blended carbon molecular sieve membrane for butadiene / butane separation and a preparation method thereof. The polymer blended carbon molecular sieve membrane is prepared by an improved method which comprises the following steps: firstly, introducing a fluorenyl structure into polyimide to prepare high-carbon-content and high-rigidity copolyimide so as to prevent serious pore channel collapse in a carbonization process, and then blending with a polymer with good pore-forming capability according to a certain proportion. The obtained polymer is blended to prepare a flat and uniform flat sheet membrane through a solvent evaporation method, and the flat sheet membrane is carbonized through an improved pyrolysis procedure, so that the prepared carbon molecular sieve membrane has a micropore-ultramicropore structure with uniform size distribution and good mechanical properties; the catalyst shows excellent gas separation performance in butadiene / n-butane, butadiene / iso-butane and other systems, and can effectively solve the industrial problem of high energy consumption of C4 fraction separation.

The invention provides a polyether sulfone flat sheet membrane with high flux and small molecular weight interception as well as a preparation method and application thereof, and relates to the technical field of membrane materials. The preparation method of the polyethersulfone flat sheet membrane with high flux and small molecular weight interception comprises the following steps: mixing polyethersulfone, a pore-foaming agent, an additive and a good solvent to obtain a homogeneous membrane casting solution; mixing a linear hydrophilic polymer with water to obtain a high-viscosity coagulating bath; wherein the molecular weight of the linear hydrophilic polymer is more than 100kDa; coating a base material plate with the homogeneous casting membrane solution, and placing the base material plate in the high-viscosity coagulating bath to obtain a primary polyether sulfone flat sheet membrane; the primary polyether sulfone flat sheet membrane is rinsed and subjected to pore protection, and the polyether sulfone flat sheet membrane with high flux and small molecular weight interception is obtained. The high-viscosity coagulating bath is adopted, and the membrane casting liquid phase conversion time is delayed, so that a uniform and compact layer is constructed on the surface layer of the membrane casting liquid, the formation of all-medium sponge holes is promoted, and the separation precision of small-molecular-weight substances is improved.

The utility model provides biogas slurry treatment equipment for a membrane bioreactor, which relates to the technical field of membrane bioreactors and comprises a treatment tank body, a plurality of groups of flat sheet membrane mechanisms are mounted in the treatment tank body, and X-axis cleaning mechanisms are fixedly connected to the top of the treatment tank body close to the front side and the back side. Y-axis cleaning mechanisms are fixedly connected to the positions, close to the two sides, of the top of the treatment pond body, each X-axis cleaning mechanism comprises transverse guide rollers which are symmetrically arranged, transverse moving assemblies are installed at the tops of the transverse guide rollers, and first connecting blocks are fixedly connected to the tops of the transverse moving assemblies; the Y-axis cleaning mechanism comprises a Y-axis cleaning mechanism and a Y-axis cleaning mechanism, the Y-axis cleaning mechanism comprises longitudinal guide rollers which are symmetrically arranged, transverse cleaning assemblies are fixedly connected to the opposite side faces of the first connecting blocks, first power assemblies are fixedly connected to the two side faces of each transverse guide roller, and the Y-axis cleaning mechanism comprises the longitudinal guide rollers which are symmetrically arranged. Therefore, harmful substances can be conveniently collected and treated in a centralized manner.

The utility model discloses a novel flat sheet membrane pressing device which comprises a pressing table, and the top of the pressing table is fixedly connected with a supporting frame. The linear moving platform is horizontally connected to the pressing table in a sliding mode, and a linear moving assembly is installed on the pressing table; the pressing mechanism is mounted on the supporting frame; the number of the material moving mechanisms is two, and the two material moving mechanisms are symmetrically arranged on the two sides of the supporting frame; the mold comprises an upper mold plate and a lower mold plate, the PVDF film is arranged between the upper mold plate and the lower mold plate, two sets of positioning assemblies are arranged on the linear moving platform, and the positioning assemblies are in limiting fit with the lower mold plate; the curves of the longitudinal sections of the upper die plate and the lower die plate comprise a plurality of arc-shaped sections and a plurality of linear sections, and the arc-shaped sections and the linear sections alternately form a corrugated structure. The PVDF film formed by pressing is large in surface pattern size, simple and easy to generate, and low in manufacturing cost.

The invention discloses a Pt-coated ZrO2-coated SiO2 catalytic ceramic membrane with a core-shell structure as well as a preparation method and application of the Pt-coated ZrO2-coated SiO2 catalytic ceramic membrane, and belongs to the technical field of advanced oxidation and water treatment. The method comprises the following steps: preparing platinum nano sol by an ethylene glycol reduction method; the preparation method comprises the following steps: coating Pt-coated ZrO2 core-shell particles with tetragonal phase ZrO2; the preparation method comprises the following steps: preparing a porous SiO2 shell, dispersing the porous SiO2 shell in an ethanol solution, adding tetraethoxysilane (TEOS), coating the porous SiO2 shell through a Stber method by taking cetyltrimethylammonium bromide (CTAB) as a template agent and ammonia water as a catalyst, and then roasting to remove the template agent to form Pt-coated ZrO2-coated SiO2 core-shell particles; the preparation method comprises the following steps: uniformly dispersing Pt-coated ZrO2-coated SiO2 core-shell particles in absolute ethyl alcohol to obtain a suspension, dipping a commercial alpha-Al2O3 flat sheet membrane in the suspension, taking out, drying, and sintering in an air atmosphere to obtain the Pt-coated ZrO2-coated SiO2 catalytic ceramic membrane with the core-shell structure. The ceramic membrane is high in catalytic activity, good in stability and large in membrane flux. The invention is applied to advanced treatment of algae-containing water and degradation-resistant organic wastewater.

The utility model discloses a multi-piece combined flat membrane component, which belongs to the technical field of environment-friendly sewage treatment equipment and structurally comprises a water collecting cavity frame body, a water outlet hole pipe, membrane units, inter-piece pressing rings, a pressing plate frame body, a screw rod, a nut and a screw rod lantern ring, due to the fact that the supporting plate with the thickness ranging from 0.1 mm to 2 mm is used or the diaphragm unit without the supporting plate is adopted, the manufacturing cost of the multi-piece combined type flat plate membrane assembly is greatly reduced compared with that of a vertical hard plate flat plate membrane assembly. During cleaning, the nuts on the screw rods can be unscrewed, and the membrane units can be detached for cleaning, so that the membrane can be cleaned more easily compared with a multi-piece integrated soft-piece flat-plate membrane assembly.

The invention discloses an automatic vision deviation rectifying mechanism for cutting a ceramic flat sheet membrane finished product, and relates to the technical field of ceramic membrane production, the automatic vision deviation rectifying mechanism comprises a device body, an auxiliary mechanism for rectifying deviation is arranged on the device body, and the auxiliary mechanism comprises a mounting frame, an auxiliary frame and two first electric push rods; an industrial camera is arranged in a square hole of the mounting frame, an optical lens is arranged at the bottom end of the industrial camera, an L-shaped plate is fixed to the lower side of the mounting frame, and a strip-shaped illuminating lamp is mounted on the upper side of the L-shaped plate. By arranging the auxiliary mechanism, automatic visual deviation correction operation can be conducted on the ceramic flat membrane substrate in the cutting process, and therefore the situation that due to manual positioning deviation correction or mechanical baffle positioning deviation correction, the consistency of the cutting size is poor or the cutting precision is affected is avoided.

The application is a ceramic flat plate membrane and end seal integrated co-sintering forming process, comprising the following steps: S1, preparing a ceramic flat plate membrane support; S2, preparing an end seal; S3, preparing a bonding slurry; S4, combined sintering: after the bonding slurry is coated on both ends of the support mud body, drying is performed, then the end seal green body is combined, and an integrated structure is formed through one-time sintering, after sintering is completed, end seal drawing performance and end seal air tightness detection are performed; S5, preparing a flat plate membrane. After the plastic end seal is upgraded to a homogeneous ceramic end seal, the ceramic membrane product has full water quality applicability, and the risk of end seal cracking and falling off is completely solved. At the same time, in the ceramic membrane sintering process, the "integrated co-sintering forming" process is adopted, and the ceramic end seal and the ceramic membrane body are prepared synchronously. This process saves the complicated processes such as post-sintering installation, glue bonding and curing waiting required by the traditional plastic end seal, and significantly improves the product reliability and production efficiency.

The invention provides an ultrafast laser artificial blood vessel microstructure preparation method and device, and relates to the field of medical and industrial crossing. Firstly, a flat sheet membrane is flatly laid on a machining table, an ultrafast laser is used for machining the upper surface of the flat sheet membrane to form a first microstructure, and then the flat sheet membrane is curled into a tubular structure; welding the two opposite sides of the flat sheet membrane together by using the ultrafast laser again to form an artificial blood vessel, so that the inner surface of the artificial blood vessel has a first microstructure, then sleeving the artificial blood vessel on a micro-shaft, and driving the micro-shaft to drive the artificial blood vessel to rotate, and finally, processing the outer surface of the artificial blood vessel by using an ultrafast laser to form a second microstructure, and taking down the artificial blood vessel from the micro shaft after processing to obtain the artificial blood vessel of which the inner surface and the outer surface are respectively provided with the first microstructure and the second microstructure. By using the method, the microstructures can be conveniently processed on the inner and outer surfaces of the artificial blood vessel, and the processing difficulty can be reduced.

The invention relates to the technical field of MBR membranes, in particular to an MBR flat membrane repairing method which comprises the following steps: tearing off a filter membrane and flow guide cloth which are used for a long time or are damaged; covering the surface of the guide plate with a new filter membrane and guide cloth; and the filter membrane and the flow guide cloth are welded on the flow guide plate by adopting a convex welding knife. The convex welding knife is used for directly heating and welding to form the groove, so that the filter membrane and the guide plate are welded together, the processes of polishing and welding rib attaching are reduced, the manpower is saved, the working efficiency is improved, and the welding effect is also enhanced.

The article to which this design relates is a membrane module having a filtration membrane element (e.g., hollow fiber membrane type, flat membrane type, etc.) inside, and used for industrial wastewater filtration, sewage filtration, pretreatment filtration for seawater desalination, etc.

The utility model discloses a dot-matrix type flat sheet membrane component, which belongs to the technical field of environment-friendly sewage treatment equipment, comprises a dot-matrix type vertical hard flat sheet membrane component, a dot-matrix type single-sheet flexible sheet flat sheet membrane component and a dot-matrix type multi-sheet integrated flexible sheet flat sheet membrane component in physical forms, and structurally comprises a membrane, a support plate and a mesh, the supporting plate is arranged in the middle, the meshes are arranged on the two faces of the supporting plate, the membranes are arranged on the outer sides of the meshes, the peripheries of the membranes and the meshes are connected with the supporting plate in a welding or bonding mode, and welding points or bonding points are arranged on the membranes every 20-80 mm. When the equipment is in a non-negative-pressure suction state, the outward bulging force of the diaphragm can be restrained by a welding point or a bonding point, so that the diaphragm cannot be wholly expanded outwards, and as the diaphragm is small in bulging amplitude, the probability of cracks and holes on the edge of the diaphragm can be reduced, and the probability of stabilizing the quality of effluent can be greatly improved.

The utility model discloses an MBR (Membrane Biological Reactor) flexible ultrafiltration flat sheet membrane, which belongs to the technical field of purification membranes, and adopts the technical scheme that the MBR flexible ultrafiltration flat sheet membrane comprises a wear-resistant antibacterial outer layer, a stress dispersion support layer is arranged at the bottom of the wear-resistant antibacterial outer layer, and an efficient ultrafiltration separation layer is arranged at the bottom of the stress dispersion layer. The bottom of the efficient ultrafiltration separation layer is provided with an elastic buffer damping layer, the bottom of the elastic buffer damping layer is provided with a corrosion-resistant anti-seepage inner layer, the wear-resistant antibacterial outer layer is arranged to inhibit bacterium breeding, prevent biological pollution, guarantee long-term cleanness of the membrane and avoid secondary pollution of effluent quality, the stress dispersion supporting layer provides strong supporting force, and the service life of the membrane is prolonged. The elastic buffer damping layer absorbs water flow impact energy, reduces membrane vibration and reduces the damage risk, the efficient ultrafiltration separation layer can accurately remove various micro pollutants including small molecules and special pollutants in water, and the advanced wastewater treatment requirements of specific industries are met.

The present invention discloses a semi - internal - combustion solid - waste - based ceramic flat membrane and its preparation method. The ceramic flat membrane comprises a support body and a separation membrane layer on its surface; the support body is obtained by extrusion molding and sintering of raw material I containing silicon - aluminum solid - waste raw materials, internal - combustion agent and micron - sized alumina powder; the separation membrane layer is obtained by spraying molding and sintering of raw material II containing fly ash, nano - sized alumina powder and high - temperature binder. The pore diameter of the separation membrane layer is 150 - 200 nm, the flexural strength is 25 - 35 MPa, the pure - water flux is 0.7 - 1 m<supgt;3< / supgt> / m<supgt;2< / supgt>·h, the pore diameter of the support body is 1.5 - 2 μm, the flexural strength is 25 - 35 MPa, the pure - water flux is 2 - 3 m<supgt;3< / supgt> / m<supgt;2< / supgt>·h, and the acid - base corrosion strength is 20 - 25 MPa, meeting the requirements of sewage treatment applications. Moreover, the raw materials used for the ceramic flat membrane have low costs and low firing energy consumption, which is beneficial to enhancing the market competitiveness of the product.

The invention relates to an air tightness detection device and method for a ceramic flat membrane module device, the device comprises a rack, a hoisting disc, a fixed limiting frame, a movable limiting frame, a controller, an inflation mechanism and a lifting mechanism, the fixed limiting frame is fixed at one end of the rack, the movable limiting frame is slidably bridged on the rack, the hoisting disc is connected between the fixed limiting frame and the movable limiting frame on the rack, and the controller is connected with the inflation mechanism. Connecting bolts are arranged on the hoisting disc, the controller is fixed to the top of the fixed limiting frame through a support rod, limiting plates are arranged on the two sides of the fixed limiting frame and the two sides of the movable limiting frame, the first telescopic air cylinders are fixed to the upper portions of the outer side faces of the two limiting plates correspondingly, and the inflation mechanisms are fixed to the telescopic ends of the first telescopic air cylinders. Second telescopic air cylinders are fixed to the inner side faces of the two inflation mechanisms. According to the invention, the inflation mechanism is driven by the telescopic cylinder, and the annular plugging head and the pore channel identification sensor are matched, so that the positions, the number and the shape of the inflation pore channels on the ceramic flat membrane module can be accurately and rapidly identified, and information can be obtained.

The invention discloses a preparation method of a PVDF (polyvinylidene fluoride) modified flat sheet membrane, an ammonia separator and a waste gas treatment method, the PVDF flat sheet membrane is wetted by n-butyl alcohol and then immersed in a prepared mixed solution of sodium hydroxide and a nonionic surfactant, the PVDF flat sheet membrane taken out is washed and then immersed in a prepared silane coupling agent solution, and the PVDF modified flat sheet membrane is obtained. An ammonia separator comprises the PVDF modified flat sheet membrane, the waste liquid flows on the inner side of the PVDF modified flat sheet membrane after being atomized, and meanwhile, the outer part of the PVDF modified flat sheet membrane is vacuumized; the liquid inlet flow valve, the separation temperature and the separation pressure are adjusted to obtain separated ammonia gas, the ammonia gas enters the ammonia gas liquefier to finally obtain recycled liquid ammonia, the ammonia-containing waste gas is separated and recycled, and efficient treatment of the ammonia-containing waste gas and recycling of resources are achieved.

The present invention belongs to the field of MBR, and provides an MBR membrane structure for backwashing filtration and a filtration device with the same, including a support frame, a rear side plate, a front baffle, and a plurality of flat membranes. The rear side plate is fixedly installed on the rear side of the support frame by bolts. By setting a sealing component, when there is more sewage to be treated, the first electric telescopic rod drives the sealing plate to move outwards, so that the sealing plate is away from the side of the support frame, allowing sewage to enter the support frame through the gap between the sealing plate and the support frame, improving the sewage treatment efficiency; when there is less sewage to be treated, the first electric telescopic rod drives the sealing plate to move inwards, so that the sealing plate seals the upper half of the support frame again, allowing sewage to only enter the support frame from the water inlet, thereby preventing air from entering the support frame, reducing the volume of air inhaled by the flat membranes, increasing the pumping efficiency of the water production component from the flat membranes, and reducing the waste of water resources.

The invention discloses a desalted water deep deoxidization membrane assembly suitable for a gas-steam combined cycle generator set, which comprises a membrane support frame and a plurality of flat membranes, the flat membranes are supported and fixed by the membrane support frame, a plurality of membrane holes are formed in the flat membranes, and the membrane holes are communicated with the membrane support frame. The flat diaphragm prevents liquid water from passing through the diaphragm holes through surface tension of the flat diaphragm and allows oxygen to pass through the diaphragm holes, one side of the flat diaphragm is a water side runner opening adhesive layer, and the other side of the flat diaphragm is a gas side runner opening adhesive layer. According to the desalted water deep deoxidization membrane assembly suitable for the gas-steam combined cycle generator set, the tolerable temperature to inlet water can reach 160 DEG C or above, the tolerable degree to inlet water pressure can reach 2 Mpa, the membrane assembly is suitable for a desalted water deep deoxidization process with the dissolved oxygen content being lower than 100 ppb, the overall structure is simple and reasonable, and the membrane assembly is suitable for large-scale popularization and application. The method has great popularization and application values.

The invention discloses a high-concentration high-salt organic wastewater zero discharge process, which comprises the following steps: enabling wastewater to pass through a grating adjusting tank, entering a coagulative precipitation tank for precipitation, enabling supernate to enter a heterogeneous catalytic oxidation system, performing hydrolytic acidification, and performing biological denitrification treatment in an AAO tank to obtain a denitrified solution; the denitrified solution is degraded and filtered by a solid waste-based ceramic flat sheet membrane and sequentially subjected to RO, first-stage DTRO and second-stage DTRO for three-stage concentration, produced water enters a recycling tank, obtained membrane concentrated liquid enters an MVR evaporation system, generated condensate water enters the recycling tank, and evaporated mud salt and mother liquor enter a drying system for dehydration; the sludge settled in the coagulative precipitation tank, the sludge subjected to hydrolytic acidification and the sludge obtained in the solid waste-based ceramic flat sheet membrane tank are mechanically dehydrated and then enter a drying system. According to the invention, zero discharge of wastewater can be realized, and the problems of high cost and incomplete degradation of high-concentration and high-salt organic wastewater degradation, large overall investment of a wastewater zero discharge process, high energy consumption and the like are solved.

The invention discloses a symmetric polyether sulfone flat sheet membrane and a preparation method thereof, and belongs to the technical field of membrane separation. The preparation method of the flat sheet membrane comprises the following steps: mixing 15-30 parts of polyethersulfone, 2-10 parts of polyvinylpyrrolidone and 60-80 parts of a cyclic lactam solvent in proportion, melting at 130-160 DEG C, casting to form a membrane, cooling and curing, extracting with hot water, and drying to obtain the symmetric polyethersulfone flat sheet membrane. According to the invention, the dissolution and separation film formation of the polyether sulfone material are realized through the melting and solidification process of the cyclic amide. An organic-solvent-free system containing a cyclic lactam solvent is adopted, no organic solvent exists in the whole process, zero VOC emission is achieved, and environment friendliness is achieved. The prepared separation membrane is of a complete spongy homogeneous structure, is uniform in pore diameter and free of finger-shaped pores, and has good pressure resistance, backwashing resistance and high flux performance. Compared with a traditional thermally induced phase separation method, the operation temperature is lower, and the energy consumption in the preparation process is remarkably reduced.