61results about How to "Reduce pollution rate" patented technology

The invention discloses a coiled reverse osmosis membrane element, which is formed by winding at least one group of water purification membranes on a central water yielding pipe, wherein the water purification membrane group consists of a purified water guide net, a reverse osmosis membrane and a water inlet guide net which are overlapped; a water inlet flow channel is formed by folding the inner surface of the reverse osmosis membrane, and a water yielding flow channel is formed between the adjacent outer surfaces; the water inlet guide net is positioned in the water inlet flow channel; the purified water guide net is positioned in the water yielding flow channel; the water yielding flow channel only has a purified water outlet facing the central water yielding pipe, and other three sides of the water yielding flow channel are closed and sealed; the partial zones, far away from the central water yielding pipe, on the two sides, adjacent to a folded side, of the water inlet flow channel which are closed and sealed; so a small section raw water inlet is formed on the two sides close to the central water yielding pipe respectively and a thick water outlet is formed on the side of the water inlet flow channel opposite to the folded side. Through improvement, the reverse osmosis membrane element of the invention increases the water velocity on the surface of the membrane, reduces the concentration polarization on the surface of the membrane, and reduces the pollution speed of the coiled membrane element so as to prolong the service life of the membrane element.

The invention discloses a roll-type reverse-osmosis membrane element with a variable-thickness channel net, formed by overlapping and winding a pure-water diversion net, a reverse-osmosis membrane and an inlet diversion net on a center water-producing pipe. The inlet diversion net and the pure-water diversion net are respectively postioned in an inlet channel formed by the inner surface of the folded reverse-osmosis membrane and a water-producing channel formed by adjacent outer surfaces. The roll-type reverse-osmosis membrane element with the variable-thickness channel net is characterized in that the thickness of the inlet diversion net is gradually reduced along the flowing direction of raw water in the inlet channel. After improvement, when the inlet flow rate and the inlet flow value have constant lengths, the thickness of the inlet channel net is reduced, and the inlet flow rate can increase so that the flow rate of water on the membrane surface is increased, therefore, the invention lessens the concentration difference polarization phenomena of the membrane surface at the water concentrating end of the membrane element, stabilizes the desalting rate and the water-generating amount, decreases the pollution rate of the membrane element and prolongs the service life of the reverse-osmosis membrane.

The invention discloses a spiral rolling type reverse osmosis membrane element, a filter element and a reverse osmosis water purifier. The spiral rolling type reverse osmosis membrane element comprises a multi-blade reverse osmosis membrane set, a central tube set, a first end cover and a second end cover, wherein the central tube set comprises a pure water pipe and a plurality of wastewater pipes which are arranged at intervals; the wastewater pipes are distributed around the pure water pipe; each reverse osmosis membrane set is provided with a first part located in the central tube set and a second part located on the exterior of the central tube set; each wastewater pipe and the pure water pipe are separated by the first part of one reverse osmosis membrane set; multiple layers of membrane elements surrounding the periphery of the central tube set are formed by the second parts of the reverse osmosis membrane sets; the first end cover and the second end cover are respectively sleeved at the two ends of the central tube set and the multi-blade reverse osmosis membrane set; a pure water outlet and a wastewater outlet are arranged on the first end cover or the second end cover corresponding to the central tube set. According to the technical scheme provided by the invention, the recycling rate of raw water can be increased and high water-saving effect can be achieved.

The invention relates to the technical field of printed circuit board solderability preservation, in particular to an organic solderability preservative preimpregnation finishing agent and an organic solderability preservative forming method. The adopted organic solderability preservative preimpregnation finishing agent comprises the following components in percentage by weight: 0.05 to 6.0 percent of nanometer accelerating agent, 0.01 to 2.0 percent of quinoxaline compound, 0.05 to 2.0 percent of inorganic base, 0.001 to 15.0 percent of ammonia or amine buffering agent, 0.001 to 0.5 percent of metallic salts, and 0.01 to 5.0 percent of halide. The invention firstly forms a nano material active layer on the copper face, and can increase the thickness of the organic solderability preservative by more than 20 percent in the same reaction time, reduce metal pollution speed of tank liquor, double the service life of the tank liquor, prevent galvanic effect, ensure good appearance of a printed circuit board, reduce the thickness of intermetallic compounds (IMC) after soldering, and guarantee the shear strength of welding joints and reliability of welding spots.

The invention provides a membrane bioreactor device for retarding membrane pollution and a sewage treatment method. The membrane bioreactor device is characterized in that a three-phase separator is arranged in a membrane bioreactor, and a sewage treatment device with a membrane reaction zone at the upper part and a contact oxidation zone at the lower part is formed; sewage enters the contact oxidation zone from the bottom of the reactor and then enters the membrane reaction zone from a slit of the three-phase separator; under the combined action of the absorption of activated sludge and the interception of membranes, the treatment of the sewage is realized; with the adoption of a rotating membrane filtering component, the rotating shear force is increased to retard the membrane pollution, and meanwhile, the fact that all the membranes have uniform cleaning strength is guaranteed, and cleaning dead corners are reduced; the three-phase separator is connected with a gas guide tube, so that residual gas in the contact oxidation zone is guided into the membrane reaction zone at the upper part to be used as a gas washing source of a membrane component, therefore the energy consumption is reduced; online ultrasonic cleaning and chemical cleaning equipment is arranged to reduce the assembly and disassembly procedures in the membrane cleaning process. The sewage treatment device and method have the advantages of high treatment efficiency, small membrane pollution, stable effluent water quality and good convenience in operation and management.

The present invention relates to a spiral wound reverse osmosis membrane element which is formed by winding at least one set of water purification membrane module around a central treated water pipe, and each set of the water purification membrane module is formed by laminating a mesh-like treated water flow guiding member, a reverse osmosis membrane and a mesh-like feed water flow guiding member; the reverse osmosis membrane is folded at a folded side to form a feed water flow channel therein along its inner surface; a treated water flow channel is formed between outer surfaces of adjacent reverse osmosis membranes; the mesh-like feed water flow guiding member is disposed inside the feed water flow channel; the mesh-like treated water flow guiding channel is disposed inside the treated water flow channel; the treated water flow channel is opened only at a treated water outlet which opens towards the central treated water tube, and the treated water flow channel is closed and sealed at remaining three sides; the feed water flow channel is closed and sealed at areas remote from the central treated water tube at two sides adjacent to the folded side, so that the feed water flow channel forms small sections of raw water inlets respectively at areas closer to the central treated water tube at the two sides, and a concentrate outlet is formed at the feed water flow channel at a side opposite to the folded side. The improved reverse osmosis membrane element of the present invention increases the water flow velocity along the membrane surface and therefore reduces concentration polarization and slows down the speed of contamination of the spiral wound type membrane element, and thereby enhancing the durability of the membrane element.

The invention discloses a water supplying system of a water dispenser. The water supplying system comprises a water dispenser body and a drinking water bucket, wherein an inner container is arranged in the drinking water bucket. The water supplying system is characterized by further comprising a water storage groove, a water control device and a water guide pillar, the upper end of the water control device is connected with the bucket wall of the drinking water bucket through a communicating device, the lower end of the water control device is placed in the water storage groove, an air inlet plug is arranged at the lower port of the water control device, a float bucket is arranged inside the water control device, a bucket cover is arranged on the float bucket, the water guide pillar is arranged in the water storage groove, a float plug is arranged in the water guide pillar, and the upper end and the lower end of the water guide pillar are provided with an upper water inlet hole and a lower water inlet hole respectively. The water supplying system of the water dispenser effectively separates air from drinking water, enables the water in the water dispenser not to be polluted, prolongs the service life of the water dispenser and is beneficial for human health. The water supplying system of the water dispenser is simple in structure, and an existing drinking water bucket can use the water supplying system only through simple improvement. The water supplying system of the water dispenser is low in cost, ensures quality of the water completely depending on self structure rather than other energy sources, and has great application value.

The invention belongs to the technical field of soil remediation, and discloses a remediation method and system for saline and alkaline land soil contamination. The system comprises a soil collectingmodule, a data processing module, a soil data comparison and classification module and a visualization module. Meanwhile, the invention discloses the remediation method. According to the remediation method and system for saline and alkaline land soil contamination, through the method including the steps of soil field studying, soil information collecting, soil treating, surface soil removing, soilexchanging, soil discharging, deep ploughing and ripping, acidic fertilizer applying, soil improving through crop planting, drainage ditch digging, scientific managing, scientific irrigating, fertilizer selecting and water quality improving, the steps are linked with one another from field studying to treatment implementing, measures are taken according to local conditions, and therefore the saline and alkaline land soil contamination treating success rate is greatly increased; in addition, the scientific education link is added in the end, and the land contamination speed is decreased from the source.

The invention discloses an ultrafiltration membrane assembly of a porous water inlet pipe. The ultrafiltration membrane assembly comprises a pressure-bearing shell and an ultrafiltration membrane group which is arranged in the pressure-bearing shell, the ultrafiltration membrane group particularly comprises a water outlet pipe, water inlet pipes and hollow fiber ultrafiltration membrane silk, the water inlet pipes are fixed to a water inlet port of the pressure-bearing shell, the water outlet pipe is fixed to a water outlet port of the pressure-bearing shell, the two ends of the hollow fiber ultrafiltration membrane silk are fixed to the water inlet port and the water outlet port respectively, hard rubber and soft rubber are poured into the water inlet port and the water outlet port of the pressure-bearing shell so as to fill reserved gaps of the water pipe; the water inlet pipe particularly comprises one central water inlet pipe and multiple outer side water inlet pipes, the central water inlet pipe is arranged on the central position of the pressure-bearing shell, the outer side water inlet pipes are arranged surrounding the central water inlet pipe, the central water inlet pipe and the outer side water inlet pipe are provided with multiple holes, and the total area of the holes formed in each water inlet pipe is 1.5 times to 2.5 times the area of the cross section of the water inlet pipe. The ultrafiltration membrane assembly is uniform in water distribution, not prone to pollute a module and easy to clean.

The invention relates to an air-blast-available external pressure type hollow fiber membrane module with one fixed end. The hollow fiber membrane module comprises a shell and hollow fiber membrane filaments, wherein an air inlet is formed in the center of one end of the shell, and at the same end, a water inlet is arranged at a certain angle with the air inlet; a concentrated water outlet is formed in the center of the other end of the shell, and at the same end, a produced water outlet is arranged at a certain angle with the concentrated water outlet; the hollow fiber membrane filaments are arranged in an inner cavity of the shell and extend from one end to the other end of the shell; one end, close to the water inlet and the air inlet, of each hollow fiber membrane filament is closed; the other end, close to the produced water outlet and the concentrated water outlet, of each hollow fiber membrane filament is fixed in the inner cavity of the shell; the inner cavity of the shell is divided into a produced water collection chamber and a water separation chamber; the produced water collection chamber is positioned at one end of the shell where the produced water outlet is formed; the produced water outlet is communicated with the produced water collection chamber; the concentrated water outlet is communicated with the water separation chamber through a central pipe arranged in the center of the inner cavity of the shell; the hollow fiber membrane filaments are positioned in the water separation chamber; the end, fixed in the inner cavity of the shell, of each filament is communicated with the produced water collection chamber.

The invention provides an oil smoke purifier electric field device, and the device comprises a frame; a plurality of anode plates arranged at equal intervals are arranged in the frame, electric field sealing plates are arranged at the two ends of the frame, insulating plates are installed on the inner sides of the electric field sealing plates through porcelain insulators, and a plurality of cathode bars are arranged between the two insulating plates; the cathode bar penetrates through the anode plate, the cathode bar is separated from the anode plate, a plurality of cathode pieces which are arranged at equal intervals are arranged on the cathode bar, and the cathode pieces correspond to the anode plate in a staggered manner. Part of oil smoke is blocked through the insulating plate, so that the pollution speed of the porcelain insulator can be greatly reduced; meanwhile, the distance between the cathode binding post and the anode is also greatly increased, safety accidents are not likely to be caused, the cleaning frequency of the purifier device is also reduced, and the cost is saved.

The invention provides a film coating groove body, and belongs to the technical field of coating. The film coating groove body comprises a profile steel framework, supporting legs used for fixing and supporting the profile steel framework and at least two film coating grooves arranged on the profile steel framework, the profile steel framework is enclosed to form a liquid storage groove, and each film coating groove is communicated with the liquid storage groove up and down; and each film coating groove is of an inverted frustum structure with the upper portion and the lower portion opened and the hollow interior, a slag discharging pipe is fixedly installed at the downward opening end of each film coating groove, and a valve used for opening or closing the corresponding slag discharging pipe is installed on each slag discharging pipe. The at least two film coating grooves are formed in the film coating groove body, so that standby film coating grooves can be provided when the film coating grooves need to be cleaned or damaged, and the use reliability of the film coating groove body is ensured; In addition, the film coating grooves of the inverted cone frustum structures facilitates liquid slag deposition; and the slag discharging pipes and the valves used for controlling opening or closing of the slag discharging pipes are arranged at the bottoms of the film coating grooves, so that slag cleaning is convenient and fast, the pollution speed of chemicals in the liquid storage groove can be slowed down, and the frequency of chemical replacement is reduced.

The invention discloses a spiral-wound reverse osmosis membrane element, and a water purifier. The spiral-wound reverse osmosis membrane element comprises a center pipe assembly comprising a pure water pipe, and a plurality of waste water pipes which are arranged around the pure water pipe at intervals, and a plurality of reverse osmosis membrane groups; one end of the pure water pipe is providedwith a pure water outlet; one end of each waste water pipe is provided with a waste water outlet; the front surface of each reverse osmosis membrane group is folded after one end of the reverse osmosis membrane group passing through a gap between the pure water pipe and a waste water pipe so as to form a water inlet channel communicated with the corresponding waste water pipe; a water production channel communicated with the pure water pipe is formed by the back surfaces of two adjacent reverse osmosis membrane groups; the back surface of at least one reverse osmosis membrane group selected from two adjacent reverse osmosis membrane groups is provided with first waterproof adhesive tape; when the reverse osmosis membrane groups are at unfolded states, the first waterproof adhesive tape isarranged to be close to one end of the pure water far away from the pure water outlet. The above structure design is capable of reducing the discharge area of the water production channel, increasingwater speed in the water production channel, and is beneficial for reduction of the pollution speed of the reverse osmosis membrane groups.

The invention discloses a self-purification water body ecological soft structure protection slope and a construction method thereof. The protection slope is divided into three sections from bottom to top, and the three sections include an animal inhabiting section, a water body purifying section and a green plant planting section. A layer of lead wire cages which are mutually bundled together is laid on each of the three sections along the slope face. Each cage is internally provided with a soil and stone cage bag with the corresponding size in a lining manner. An ecological fish nest is placed in each soil and stone cage bag of the animal inhabiting section. Each soil and stone cage bag of the water body purifying section is filled with any one or more of pot clay gravel, vermiculite, activated carbon, sand gravel and current soil in a layering or mixing manner. The self-purification water body ecological soft structure protection slope and the construction method thereof have the beneficial effects that the purification water body ecological soft structure protection slope is designed into the three sections, a habitat can be provided for fishes, shrimps and other aquatic animals in water, the ecological environment is well protected, the water can be effectively purified through the water body purification section, a water body is prevented from generating the peculiar smells, and the water polluting speed is reduced; and landscape green plants can be planted in the green plant planting section, the river levee is protected, and the environment is beautified as well.

The invention relates to a pressure-relief clean water connection flange of a seawater desalting device. The connection flange includes a connection liner, a connection port, a flange disc, screw fixing holes, and a pressure-relief column. The connection liner is installed inside the connection port in an embedded manner, wherein the lower end of the connection port is fixedly connected to the center of the upper end of the flange disc in a welding manner. The flange disc and the screw fixing holes are integrated. The pressure-relief column is embedded in the lower end of the flange disc. During operation of the seawater desalting device, through the connection flange between pipelines, more seawater can be stored in the interior of the pressure-relief column, and extra tension force is applied under the control by a limiter, so that by means of the extra pressure generated by the reduction of diameter of a pipeline when seawater is sucked for high-pressure transportation, a risk of pipeline explosion due to impact by temporary high water pressure at a joint of the pipelines can be prevented.

The invention relates to a rotating magnetic field-membrane bioreactor joint ship oily sewage treatment method. The method comprises the following steps of sludge acclimatization, magnetic powder pretreatment, magnetic powder adding, rotating magnetic field increasing and cycle treatment. Accordingly, the external environment of microorganisms in activated sludge and the physical property of waterin thalli can be changed, the structure and the activity of protein and enzyme are changed, the physiological function of the microorganisms is affected, microorganism growth is promoted, and the activity of the microorganisms is improved; by putting magnetic powder in the activated sludge, the property of the activated sludge is improved conveniently, the sludge floccule particle size is increased, the sludge filtration resistance is lowered, floccule which is scattered, porous and good in air permeability is formed, and the pollution rate of an MBR membrane can be effectively slowed down; under the action of magnetic field periodicity, the magnetic powder drives the sludge rotating magnetic field to be away from the membrane surface periodically, the accumulation degree of gummy substances on the membrane surface can be lowered, and meanwhile the contribution degree of a filter cake layer to membrane pollution is reduced, so that the membrane pollution rate is greatly lowered.

The invention provides an overstable three-electrode electron beam evaporation source which is used for solving the problems that an electron beam evaporation device in the prior art is complex in structure, an electron beam source is not uniform in heating, evaporation materials are prone to polluting a lamp filament, and an electron beam trajectory control method is complex. The overstable three-electrode electron beam evaporation source comprises a target material, a lamp filament and a supporting base, wherein the target material is fixed to the supporting base; and the lamp filament is ahigh-temperature resisting metal material, fixed to the supporting base, arranged above the target material and connected with negative electricity. By implementing the technical scheme provided by the invention, a reflecting plate is arranged between the target material and the lamp filament, the electron beam trajectory can be controlled conveniently and fast, in addition, the lamp filament polluting speed is slowed down, the service life of a device is prolonged, the device structure is simplified, and the device outgassing rate is decreased; and the reflecting plate is connected with negative electricity, the voltage of the negative electricity is continuously adjustable, uniform-speed evaporation of the end of the target material is facilitated, the evaporation source is applicable tomore types of target materials, and the device compatibility is improved.

The invention provides a filter element component and a water purifier. The filter element component comprises a filter flask body and a filter flask cover. The filter flask body and the filter flask cover form a cavity. A filter element is installed in the cavity. The filter element comprises an end head and a filtering structure connected with the end head. The end head is detachably connected with the side wall of the filter flask cover. In the provided filter element component, the end head is detachably connected with the side wall of the filter flask cover, so the end head and the filtering structure on the end head are supported in the cavity formed by the filter flask body and the filter flask cover together. A housing in a current filter element is eliminated, the structure of the filter element component is simplified, and the cost is reduced. In addition, while the filtering structure in the filter element needs to be washed, the end head and the filtering structure on the end head can be taken out when the filter flask body and the filter flask cover are detached at the same time. The detaching and assembling process is convenient.