60 results about "Cloth filter" patented technology

The utility model belongs to the technical field of traditional Chinese medicine liquid extraction equipment, particularly relates to a traditional Chinese medicine liquid extraction device, and aims to solve the problems that the mode of manually extruding medicine residues to discharge medicine liquid is laborious and inconvenient to use, and adopts the following scheme that the traditional Chinese medicine liquid extraction device comprises a tank body, a sealing cover is clamped at the top of the tank body, and a filter cartridge is arranged in the tank body; an annular support frame for supporting the filter cartridge is fixedly arranged on the inner wall of the tank body, and a cloth filter bag for improving the filtering effect is arranged in the filter cartridge in a sleeving manner. When the medicine residue extractor is used, medicine liquid in medicine residues can be more effectively squeezed out through the automatic squeezing function of the residue pressing assembly, the medicine liquid extraction efficiency is improved, raw materials can be added into the filter cartridge without frequently opening a sealing cover in the medicine liquid extraction process due to the design of the material adding assembly, the operation process is greatly simplified, and the labor intensity of workers is reduced. And each part is easy to disassemble and clean, so that daily cleaning and maintenance work is facilitated.

The utility model relates to the technical field of water pollution treatment, in particular to a landscape water dialysis purification system. The system comprises a water intake pumping station, a water distribution well and a cloth filter tank, water taken by the water intake pumping station is conveyed into the water distribution well through a water inlet pipe of the water distribution well, the water inlet pipe of the water distribution well is connected with PAC and PAM pipelines, sewage is distributed into the cloth filter after being subjected to first flocculation and sedimentation in the water distribution well, PAM is added into a water outlet pipe of the water distribution well, pollutants in water are further subjected to flocculation and sedimentation in a flocculation and sedimentation section of the cloth filter, and the pollutants in the water are subjected to secondary flocculation and sedimentation. The sewage is filtered by the fiber rotary disc filter after two times of flocculating settling, and the filtered clear water can be discharged, so that the sewage is treated, the load of the fiber rotary disc filter is effectively reduced in the process, and the efficient treatment process of the sewage is ensured; sludge generated in the operation process of the system is collected and then filtered, so that the sludge produced by the system is treated.

The invention provides basic magnesium carbonate washing equipment, which belongs to the technical field of washing and comprises a washing tank and a driving part, a water outlet is formed in the bottom of the washing tank; the water outlet is communicated with vacuum filtration equipment through a pipeline; a filter cloth filtering structure is arranged in the washing tank, and a discharging opening is formed in the side wall of the washing tank; the driving part is arranged at the top of the washing tank; an output shaft of the driving piece is connected with a spline shaft; the spline shaft is connected with a spline cylinder, and the bottom end of the spline cylinder is connected with stirring blades; wherein the output end of the driving part is connected with a supporting part through a connecting part, the top of the supporting part is provided with a displacement part, and the displacement part is connected with the spline cylinder; the opposite ends of the supporting component and the displacement component are provided with inclined planes, and when the displacement component rotates along with the spline cylinder and the stirring blades, the stirring blades can reciprocate in the axial direction; through the arrangement, the labor intensity can be reduced, the material pollution is reduced, the washing water is saved, and the washing time is saved.

The invention discloses a preparation method and application of a hydrophobic air filtering material based on lignin modification, and belongs to the technical field of personal protective articles. According to the method, environment-friendly lignin and a silane coupling agent are subjected to a pre-grafting reaction to prepare a functionalized impregnation liquid, a mask melt-blown cloth filter material is modified, and the modified mask melt-blown cloth filter material serves as a long-acting hydrophobic mask filter material to prepare a mask. According to the invention, a firm hydrophobic network is constructed on the surface of the fiber by utilizing the'molecular bridge 'effect of silane. The modified filter material prevents the filter efficiency from being reduced due to moisture, and meanwhile, the coating is resistant to airflow scouring through chemical bonding, so that the protective life of the mask is prolonged. Compared with a reported modification method, the preparation method disclosed by the invention has the comprehensive advantages of environmental friendliness, low cost and lasting performance.

The invention discloses a full-automatic online adsorption and desorption integrated device for organic waste gas, and belongs to the technical field of waste gas pollution treatment. A full-automatic online adsorption and desorption integrated device for organic waste gas comprises a powdery molecular sieve fluidized bed, a plurality of cloth cylinder filters are arranged in the powdery molecular sieve fluidized bed, a lifting ring capable of vertically moving up and down is arranged on the surface of any cloth cylinder filter, an inner ring is arranged in the lifting ring, and a sealing groove is formed in the inner wall of the inner ring. A sealing seat matched with the sealing groove is connected into the sealing groove in a sealed mode and fixedly connected with the lifting ring. Compared with a traditional fixed bed activated carbon adsorption device, the full-automatic online adsorption and desorption integrated device for the organic waste gas has the advantages that powder layers are formed on the surfaces of a plurality of cloth cylinder filters to perform adsorption treatment on the waste gas, so that the adsorption area of the powder layers on the waste gas is increased, and the treatment efficiency of the powder molecular sieve layer on the waste gas is further improved.

The present invention discloses a denoising method for three-dimensional point cloud data of an orchard environment that integrates terrain features. The present invention divides the point cloud into an upper and lower part by line segmentation, performs cloth filtering to fit the ground and the protective net respectively, and then calculates the elevation difference of the point cloud projected onto the two-dimensional grid plane, and filters out the ground point cloud and the protective net point cloud. Outlier noise is filtered out for other point clouds. For dynamic obstacles that are difficult to mark, a two-step marking method is performed, and the dynamic obstacles are marked using inter-frame information and region growth clustering method. In order to improve the credibility of the marking, a fusion feasibility model is determined. Finally, the dynamic obstacles are filtered out to obtain a clean point cloud of a row of fruit trees. This method effectively filters out the noise point cloud that is invalid for point cloud registration, extracts the point cloud of a row of fruit trees rich in feature information, has higher robustness, more accurate registration results, and the overall real-time performance of the method is high.

The invention provides a rural domestic sewage treatment system of an enhanced biological filter, which sequentially comprises a pretreatment unit, a biological filter unit, a biological filter unit and a sewage treatment unit along the water flow direction, and the pretreatment unit comprises a grating, a regulating tank and a hydrolysis acidification tank; the core biological treatment unit is communicated with a water outlet of the pretreatment unit, and the core biological treatment unit is formed by connecting a multi-stage anaerobic biological filter and a baffling type micro-aeration biological filter in series; and the deep treatment unit is communicated with the water outlet of the core biological treatment unit and comprises an inclined plate sedimentation tank and a cloth filter tank. The invention aims to overcome the defects of the existing rural domestic sewage treatment technology, particularly a centralized treatment technology, in the aspects of coping with complex water quality and cold climate, decentralized management, cost control and the like. The enhanced biological filter sewage treatment system and the enhanced biological filter sewage treatment method provided by the invention can stably operate under various terrain and climate conditions (especially in high and cold areas and high altitude areas), and are high in treatment efficiency and low in construction and operation cost.

The present invention discloses a method for extracting buildings from outdoor scenes based on multi-feature constraints. First, a voxel grid filtering method is used to downsample a large-scale point cloud scene, and a cloth filtering algorithm is used to remove ground points from the downsampled scene. Then, a density-based clustering algorithm and a KD tree are combined to cluster non-ground points into different point clusters. Finally, the building point cloud is separated from the non-building point cloud by combining the point cloud height, volume, direction, dimension and color features, and finally the building point cloud is extracted from the outdoor scene. The present invention effectively improves the problem of low extraction accuracy using traditional methods, and can successfully extract most buildings in outdoor scenes, providing a corresponding processing idea for the extraction of buildings in large-scale scenes.

The utility model discloses a kind of short-process underground coal mine wastewater treatment systems, including regulating pool, regulating pool lift pump, magnetic coagulation sedimentation system, filter cloth filter system, clean water pool, reuse pump, regulating pool is arranged export connection regulating pool lift pump, the export of regulating pool lift pump is connected with the inlet of magnetic coagulation sedimentation system, the export of magnetic coagulation sedimentation system is connected with the inlet of filter cloth filter system, the export of filter cloth filter system is connected with the inlet of clean water pool, clean water pool outlet water is lifted to water point by reuse pump, the sludge outlet of magnetic coagulation sedimentation system is connected with the inlet of sludge pool, the export of sludge pool is connected with the inlet of sludge pump, the export of sludge pump is connected with the inlet of plate-and-frame filter press, compared with traditional mine water treatment system, the combination mode of magnetic coagulation sedimentation system and filter cloth filter system has the characteristics of short process, small footprint, low energy consumption.

The utility model is applicable to the technical field of negative electrode material production, and provides a filter cloth filtering device for a rake dryer, which comprises a flange plate, filter cloth is arranged below the flange plate, a connecting piece is arranged between the filter cloth and the flange plate, a screw is arranged between the connecting piece and the flange plate, the connecting piece comprises a cross-shaped supporting rod, and the cross-shaped supporting rod is connected with the flange plate. The filter cloth is bound on the cross-shaped supporting rod, clamping pieces are arranged at the four free ends of the cross-shaped supporting rod, the tail ends of the screws abut against the free ends of the cross-shaped supporting rod and the clamping pieces, and the threaded ends of the screws are connected with the flange plate. According to the scheme, the filter cloth and the flange plate are connected through the cross-shaped supporting rod and installed in the rake type drying machine for filtering, and the filter cloth adopted in the scheme is convenient to clean; the product risk is reduced, and the weight is reduced; the risk of manual replacement is reduced; a plane structure is adopted, so that the contact condition with powder is reduced, and the blocking risk is reduced; in addition, filter cloth is adopted, so that the replacement cost is reduced.

The present invention relates to a water treatment system for pile fabric filtration, comprising at least one suction slot for backwashing, and a pile fabric filter having pile fibers fastened to a pile fabric support structure, wherein the pile fabric support structure has open, flow-relevant pores. According to the invention, the ratio of the slot area per suction bar to the area of the flow-relevant pores of the pile fabric support structure in the slot area per suction bar is between 1.1 and 9.5, preferably between 1.25 and 9, more preferably between 1.5 and 8.5, even more preferably between 2 and 8, even more preferably between 2.25 and 7.5, and particularly preferably between 2.5 and 7.

The utility model relates to the technical field of pulse bag-type dust collectors, in particular to a dust collecting device for a pulse bag-type dust collector, which comprises a dust hopper, the bottom end of the dust hopper is fixedly connected with a bottom cylinder, and a blanking mechanism is arranged below the bottom cylinder; push plates are arranged on the two sides of the ash bucket, and the upper ends of the push plates penetrate through the ash bucket and are movably arranged outside the ash bucket; driving mechanisms are arranged outside the two sides of the ash bucket and close to the lower part of the push plate, and an aeration mechanism is arranged in the middle of the front surface of the ash bucket. According to the utility model, the vibration is controlled through compressed air, so that overlarge noise generated by mechanical knocking is avoided, and the device is very beneficial to working environments with strict requirements on noise, such as dust collecting devices in factories near residential areas or laboratory environments sensitive to noise.

The invention relates to the technical field of water treatment, and discloses a high-efficiency cloth filter tank, which comprises a filter tank body, one side of which is provided with a water inlet; a plurality of filtering devices are arranged in the filtering tank body at equal intervals, and the two ends of the filtering devices are detachably connected with the filtering tank body through flange mounting plates respectively; the cleaning device comprises a cleaning body and a scraping plate, one side end of the scraping plate is propped against the peripheral side wall of the filtering equipment, and the other side end of the scraping plate is communicated with the cleaning body; the control device comprises a flow sensor arranged at the water inlet, a first sensor, a second sensor and a control unit, and the control unit adjusts the cleaning frequency and sends out alarm information according to data of the flow meter; a plurality of filtering devices are detachably connected through the flange mounting disc and can be independently maintained without emptying the filter tank, and the cleaning device timely cleans dirt through the scraper to reduce blockage; the control device dynamically adjusts the cleaning frequency according to the flow, the sensor monitors the water passing efficiency and the sludge concentration, and the overall operation stability, efficiency and convenience are improved.

The invention discloses a rapid filtering device for traditional Chinese medicine syrup in the technical field of medicament filtration, the rapid filtering device comprises a shell and filter cloth arranged in the shell through a clamping mechanism, the filter cloth is used for filtering syrup, the filter cloth is cylindrical, and a top cloth assembly for switching the filter surface of the filter cloth is further arranged in the shell; the clamping mechanism can adjust the height of the horizontal section of the filter cloth at the joint with the clamping mechanism, and is matched with the cloth jacking assembly to adjust the filtering part of the filter cloth; according to the invention, the filter cloth forming the recess is continuously changed, so that the filter cloth for filtering work is continuously updated, the filter cloth participating in the filtering work leaves the filtering part in a manner of continuously moving upwards or being rolled, and the filtered impurities can leave the filtering part along with the filter cloth in combination with the characteristic that the impurities are easy to adhere to the filter cloth due to high viscosity of syrup; the filtering assembly can efficiently filter syrup, the risk of interactive pollution inside and outside the shell is avoided, meanwhile, the filtering continuity is improved, and the filtering efficiency is further improved.

The utility model relates to the technical field of sewage treatment, in particular to a cloth filter scum collecting device which comprises a fixed frame, a retaining wall is arranged on one side of the fixed frame, movable rods are mounted on the fixed frame and symmetrically distributed, and a first buoy and a second buoy are mounted at the bottom ends of the movable rods on the two sides respectively. The bottom ends of the first float bowl and the second float bowl are connected through a connecting frame, a scum collecting channel is arranged between the first float bowl and the second float bowl, a drain outlet is formed in the middle of the scum collecting channel, the collecting box is located on the fixed box, and a height adjusting assembly is arranged in the fixed box. According to the cloth filter, the device ascends and descends according to the water level and the water quantity by virtue of the buoyancy of the first float bowl and the second float bowl on the two sides, so that the device always sucks away scum on the water surface, and reclaimed water with scum on the upper surface is sucked into a scum collecting channel from a square opening; and the device is connected into the sewage area in the collecting box through the sewage outlet and the sewage discharge pipe at the bottom end, so that the effects of cleaning the scum and ensuring the cleanness and the water permeability of the cloth filter are achieved.

The utility model discloses a vibration pressure ultrafiltration automatic solid-liquid separation system which comprises an extrusion dehydration device, the extrusion dehydration device comprises a barrel, the bottom of the barrel is conical, a discharge port is formed in the bottom of the barrel, a discharge valve is arranged at the discharge port, a filter bag is arranged in the barrel, and the filter bag is connected with the extrusion dehydration device. The shape of the filter bag is attached to the inner wall of the barrel, openings are formed in the top and the bottom of the filter bag, an extrusion plate is connected to the opening in the top of the filter bag, an opening in the bottom of the filter bag is connected with a discharging port, a lifting extrusion mechanism is connected to the top of the extrusion plate, a feeding port is formed in the extrusion plate, and the lifting extrusion mechanism is connected with a discharging port. According to the utility model, a horizontal linear vibration screening technology and a membrane cloth filter pressing technology are combined, the aperture of meshes in the existing separation and extrusion technology is reduced from about 150 microns to below 40 microns, large deformable solids are prevented from being extruded back into liquid again in a spiral extrusion dehydration process, and the separation efficiency is ensured.

The utility model discloses a glass fiber cloth filter material film covering device, which relates to the technical field of filter material film covering equipment, and comprises a conveying frame, the inner side wall of the conveying frame is rotatably connected with a conveying roller, and through the arrangement of a clamping block and a pressing plate, when the glass fiber cloth filter material is produced and processed by the film covering device, the glass fiber cloth filter material can be conveyed to the conveying roller through the clamping block. In order to improve the convenience of disassembly, assembly and cleaning under long-time dustproof use of the dustproof plate on the side edge of the glass fabric filter material and the convenience of press fit of the glass fabric filter material during conveying and laminating, a pull block can be pulled to drive a sliding rod to slide along the outer wall of a mounting box through connection of a spring, and a clamping block and an inserting rod are not in contact; according to the dust-proof device, the dust-proof plate is arranged in the mounting box, the inserting rod is pulled out of the mounting box, meanwhile, the dust-proof plate is pulled out of the inserting groove, the dust-proof plate is conveniently disassembled, assembled and cleaned, and when the dust-proof plate is used daily, a micro servo motor can be started to drive a pressing plate to slide along the inner wall of a fixing groove through rotation of a threaded rod, so that the effect of improving stable film covering of a glass fabric filter material is achieved.

The utility model relates to the technical field of filter tank cleaning, and discloses a filter cloth filter tank bottom desilting device which comprises two parallel scraper plate rails installed at the bottom of a filter tank and extending in the length direction of the filter tank, a sludge scraper plate is arranged between the two scraper plate rails, a sludge collecting groove is formed in the end side of the bottom of the filter tank, and a sludge outlet is formed in the bottom of the sludge collecting groove. A sludge suction pump is arranged on one side of the filter tank, a sludge suction pipe is arranged on the sludge suction pump, and a port of the sludge suction pipe extends into the sludge collecting tank. The scraper track, the sludge scraper and the sludge collecting pit are additionally arranged at the bottom of the filter tank, the sludge scraper moves along the scraper track under the driving of the driving motor, sludge at the bottom of the filter tank is scraped to the sludge collecting pit in the moving process, and the sludge is collected in the sludge collecting pit in a centralized manner; the sludge suction pump is matched with the sludge suction pipe to extract and clean sludge in the sludge collection pit, and compared with the scheme, the sludge cleaning range can be enlarged, cleaning dead angles are reduced, and sludge cleaning is more thorough.

The utility model relates to the technical field of integrated cloth filter tanks, and discloses an integrated cloth filter tank, which solves the problems in the background technology, and comprises a filter tank main body, the top of the filter tank main body is rotatably connected with two upper covers, and the two upper covers are respectively positioned on the front side and the rear side of the top of the filter tank main body; a water inlet is further formed in the top of the upper cover, two second supporting plates are fixedly connected to the bottom of an inner cavity of the filter tank body, supporting frames are fixedly connected to the tops of the two second supporting plates, second rotating shafts are rotationally connected to the two supporting frames, and filter cloth plates are connected to the circumferential surfaces of the second rotating shafts in a sleeving mode. The sewage treatment device has the advantages that metal filings in sewage can be filtered, so that the effect of protecting the filter cloth is achieved, and adhered objects on the filter cloth can be automatically cleaned, so that the effects of preventing the adhered objects from blocking the filter cloth and avoiding reducing the filtering efficiency are achieved.

The embodiment of the utility model provides a filtering device, which is used for a desalting water system of a granulator and comprises a box body, the water segregator is mounted in the box body; the non-woven fabric filter is mounted in the box body and is positioned below the water segregator; the metal filter is positioned between the water segregator and the non-woven fabric filter; the metal filter is provided with a metal frame and at least one filter layer, the metal frame is detachably connected with the box body, the filter layer is fixed in the metal frame, and the filter layer is used for filtering impurities in demineralized water; and the distance between the metal filter and the water segregator is smaller than or equal to the distance between the metal filter and the non-woven fabric filter. According to the embodiment of the invention, the problem that the non-woven fabric can be broken through by powdery precipitates in demineralized water can be improved.

The utility model discloses a flexible fiber filter cloth filter tank in the technical field of water treatment. The device comprises a first tank body, the first tank body is connected with a water inlet pipe and a water outlet pipe, fiber filter cloth is arranged in the first tank body and used for filtering water entering the first tank body, a second tank body with a downward opening is further arranged in the first tank body, and the fiber filter cloth is arranged at the opening of the second tank body. The size of the fiber filter cloth is larger than that of the opening of the second tank body, so that the fiber filter cloth can move up and down; the backwashing drain pipe is communicated with the interior of the second tank body and the exterior of the first tank body; the backwashing drain pipe is communicated with the water seal well outside the first tank body, and the liquid level setting position of the water seal well is lower than the lowermost end of the second tank body. The second tank body with a downward opening is additionally arranged, and fiber filter cloth is arranged at the opening of the second tank body, so that gravity backwashing is realized, and energy conservation and environmental protection are realized; the fiber filter cloth moves in different water flow directions, so that the washing effect can be improved.

The utility model discloses a novel precise filter cloth filtering rotary drum filter tank, which relates to the technical field of rotary drum filters, aims to solve the technical problems of short service life and high maintenance cost of filter meshes, and comprises a rotary drum machine shell, a driving shaft is rotatably connected to one side of the rotary drum machine shell, and a driving structure is arranged on the periphery of the driving shaft. One end of the driving shaft penetrates through the drum machine shell and is connected with a rotating frame, a plurality of filter screens are arranged on the peripheral area of the rotating frame, the filter screens are formed by weaving nylon materials, positioning structures fixed to the rotating frame are arranged on the peripheries of the filter screens, the positioning structures fix the filter screens, and a plurality of anti-deformation structures are arranged on the inner sides of the positioning structures. According to the utility model, the nylon filter screen is used for replacing a metal filter screen, the liquid inlet is necked down, and the pins at a plurality of positions and the filter screen are limited, so that the filter has the advantages of strong water permeability, firmness, durability, low improvement cost and lower maintenance cost, and meanwhile, the capacity of resisting deformation under high pressure is improved.

The utility model relates to the technical field of integrated extraction of tea leaves, in particular to an integrated extraction device for tea leaves, which comprises a mixing box, a mounting frame and a feeding and mixing assembly, a liquid inlet pipe is arranged on the inner side of the mixing box; a feeding box is arranged on one side of the mixing box; a feeding mixing assembly is arranged on one side of the mixing box; a mounting frame is arranged on one side of the liquid outlet pipe; a first rotating rod is arranged at the output end of the first driving motor, a mounting box is arranged on one side of the first rotating rod, and a first rotating pipe is arranged on one side of the mounting box; according to the device, tea residues are rapidly discharged in a rapid discharging mode, and the purpose of rapid cleaning can be achieved, so that the problems that the working time is prolonged, the extraction efficiency is reduced and the practicability is relatively low due to the fact that the tea residues still remain inside and are inconvenient to clean after most of the screen cloth filters an extracting solution are solved.

To regenerate water used in a water jet method into water equivalent to first class industrial water.SOLUTION: The method for treating the used water of the water jet includes a separation step of separating the used water into supernatant water and a flocculate and a step of dehydrating the flocculate to discharge the flocculate as a dehydrated cake. A dehydration step of returning filtered water to supernatant water, a first neutralization step of adding an acid to the supernatant water to neutralize the supernatant water, a first filter passing step of passing the supernatant water through a first filter (palm fiber filter) capable of adsorbing flocs, a second filter passing step of passing the supernatant water through a second filter (cloth filter) capable of rough filtration, an organic matter removing filter passing step of circulating the supernatant water through an organic matter removing filter (activated carbon filter) capable of removing organic matter, and a second neutralization step of adding carbon dioxide gas to neutralize the supernatant water; And a third filter passing step of passing through a third filter (hollow fiber filter) capable of microfiltration.SELECTED DRAWING: Figure 1

The application discloses a kind of textile printing and dyeing wastewater pollution treatment filter cloth filter equipment and its filtering method, it is related to printing and dyeing wastewater pollution treatment technical field, including wastewater pollution treatment filter, the top edge of one side of wastewater pollution treatment filter is fixedly installed with horizontal sliding table, the top side of horizontal sliding table is fixedly installed with sliding control box, the side of sliding control box is fixedly installed with power box.Add by adding the sewage that needs to be treated and chemical treatment agent in wastewater pollution treatment filter, also, add a certain proportion of flocculating agent, the rotation of transmission screw rod is controlled by sliding control box, the horizontal sliding of horizontal sliding disc on horizontal sliding rail is realized, the overall sliding operation of stirring arm is directly driven by the sliding of horizontal sliding disc, stirring rod in different positions is used for stirring operation in wastewater pollution treatment filter, the inclination angle of stirring rod can be adjusted by side rotary shaft, and then stirring angle is directly controlled.

The present invention relates to the technical field of grinding, and specifically relates to a raw material grinding device for the production of water-based coatings, which includes an operating table, a funnel, a flange, an iron cloth filter screen, a grinding disc, and a discharging cylinder. A bevel gear disc is rotatably arranged inside the discharging cylinder, and there are human-shaped mounting columns and grinding balls on the bottom side of the bevel gear disc. The bottom end of the funnel is fixedly provided with a discharge pipe, and a feed inlet is opened inside the bevel gear disc. A blanking guide rail is fixedly installed at the upper end of the operating table. The present invention can drive the grinding balls to rotate on the grinding disc through a plurality of human-shaped mounting columns by the bevel gear disc. The fine and uniform slurry can enter the inside of the funnel through the iron cloth filter screen and be discharged through the discharge pipe, changing the traditional grinding method by the shearing force of grinding beads. The grinding balls roll and grind the raw materials on a fixed track, so the probability of the grinding balls breaking is greatly reduced, and the functions of feeding and discharging are synchronized through the feed inlet and the discharge pipe, greatly improving the production efficiency of water-based coatings.

The invention relates to a low-load domestic sewage treatment system and process based on a variable biofilm process, and relates to the technical field of sewage treatment. The system comprises a pump station forebay, solid-liquid separation equipment for removing slag sand, hair and fibers in sewage, an intermediate water tank, a coagulation reaction tank, a composite polymer filler filtering system for removing SS and TP in raw water, a sewage inlet biochemical unit for removing COD, BOD, NH3-N and TN in sewage, and a cloth filter for further removing SS, which are arranged and communicated in sequence. The sewage treatment device has the advantages of meeting the water quality standard, adapting to working condition changes and flexibly and adjustably treating sewage on the premise that the occupied area is small.

The invention provides hollow fiber composite membrane cloth and a preparation method, and relates to the technical field of fiber materials, the hollow fiber composite membrane cloth comprises a functional substrate layer, a hollow fiber membrane cloth layer and an interface treatment layer located between the functional substrate layer and the hollow fiber membrane cloth layer, the interface treatment layer is used for treating the contact surface between the functional substrate layer and the hollow fiber membrane cloth layer by adopting a physical method or a chemical method so as to enhance the binding force of the functional substrate layer and the hollow fiber membrane cloth layer and form a two-dimensional planar membrane cloth. In particular to a three-dimensional composite membrane cloth filter which is formed by compounding hollow fiber cloth with substrates with different functions to form two-dimensional planar membrane cloth, realizing multi-scene adaptation such as antibiosis and anti-static electricity through substrate functionalization and then winding, weaving and packaging, and is suitable for scenes such as bioreactors, water treatment and gas separation. High permeability, pollution resistance and structural stability are shown.

The invention discloses a low-carbon sewage treatment process and a low-carbon sewage treatment system, belongs to the technical field of sewage treatment, and solves the problems of difficulty in real-time monitoring and accurate regulation and control due to dynamic fluctuation of oxidation-reduction potential (Eh) in a hydrolytic acidification stage, hidden proliferation of acid-resistant methanogens and hysteresis effect of VFAs consumption. And finally, the recovery amount of the volatile fatty acid serving as the carbon source is influenced. Comprising an aerated grit chamber, an A2O tank, an AO tank, a cloth filter tank and a disinfection tank which are sequentially communicated, and the A2O tank and the AO tank are jointly communicated with an anaerobic sludge digestion tank. According to the invention, the separated sludge in the sewage can be effectively recovered and treated, and the sludge can generate high-value volatile fatty acid as a carbon source by controlling the anaerobic digestion process. Meanwhile, oxidation-reduction potential fluctuation, acid-resistant methanogens proliferation and VFAs consumption hysteresis effects in the hydrolytic acidification stage are accurately recognized, the situation that the methanogens are activated to consume VFAs due to the fact that the oxidation-reduction potential is too low is avoided, and it is ensured that the recovery rate of a sewage treatment system is good.