659 results about "Chemical agents" patented technology

The invention provides an intelligent maintenance cleaning device for nanofiltration membrane pollution control and a method thereof, and solves the problems of low maintenance cleaning efficiency, poor adaptability of cleaning parameters and pollution conditions and frequent chemical cleaning of an existing nanofiltration system. Belongs to the technical field of membrane pollution control. According to the invention, the filtering system, the cleaning system and the intelligent decision-making module are integrally designed, so that the closed-loop control of the whole process of real-time monitoring, pollution identification, intelligent decision-making and automatic cleaning of the running state of the nanofiltration membrane is realized. The cleaning effect gating memory neural network model is used as a membrane pollution prediction model, membrane pollution can be accurately predicted, and key cleaning nodes can be identified. The optimal membrane cleaning parameters are generated by adopting a non-dominated sorting genetic algorithm, the usage amount of chemical agents and the cleaning cost are reduced, and the membrane pollution control effect is improved. The invention is applicable to the field of drinking water treatment.

The invention relates to the technical field of agricultural planting, in particular to a method for preventing and treating watermelon fusarium wilt by using a green bactericide, which comprises the following steps: preparing the green bactericide which comprises the following components in percentage by mass: 18-25% of composite plant source active component consisting of water lettuce extract, enteromorpha polysaccharide and field horsetail flavone; 20%-30% of an antagonistic bacterium compound preparation, wherein the antagonistic bacterium compound preparation comprises bacillus pumilus and trichoderma; 38%-45% of a nano-carrier, wherein a chitosan-sodium alginate compound is used as an embedding material; and the balance of auxiliary components. Applying the green bactericide to watermelon plants; through component optimization and a synergistic effect, compared with the prior art, the composition has the remarkable advantages that the safety is high, all the components are from natural plants or microorganisms, no chemical pesticide residue exists, the composition is healthy to human bodies and environmentally friendly, and the problems of drug resistance and soil pollution caused by chemical agents can be avoided.

The invention discloses an automatic treatment device and method for metal workpiece surface polishing and application. According to the automatic environment-friendly electrochemical polishing device, the workpieces are automatically transferred through the automatic conveying device, automatic connection of all the procedures is achieved, and the automatic environment-friendly electrochemical polishing process of the metal workpieces such as the pure magnesium workpieces is achieved; and compared with the prior art, only water is used as a cleaning medium in the whole process, and toxic and harmful chemical agents are not needed. The environmental pollution risk is greatly reduced, and the environmental protection requirement is met. The environment-friendly polishing solution is adopted for electrochemical polishing, core components of the polishing solution are biodegradable non-toxic reagents such as ethyl alcohol and glycerinum, waste liquid treatment is simple, zero liquid discharge can be achieved, and the difficulty and cost of waste water treatment are remarkably reduced. According to the invention, the process flow is simplified, the consumption of chemicals and pollution emission are reduced, and the process efficiency is improved. According to the invention, whole-process monitoring and automatic operation from pretreatment to post-treatment are realized, the production efficiency and consistency are improved, and the method is suitable for industrial large-scale application.

The invention relates to the technical field of pipelines, in particular to a self-cleaning drainage pipeline which comprises a pipeline body and is characterized in that the pipeline body comprises a self-cleaning section, self-cleaning protruding strips are arranged on the inner wall of the self-cleaning section, and the self-cleaning protruding strips are arranged in a continuous spiral surrounding mode along the inner wall of the self-cleaning section. The self-cleaning device has the beneficial effects that water scale can be inhibited to a certain degree, existing water scale can be removed, no additional auxiliary device or chemical agent is needed, self-cleaning is achieved only through the pipeline structure, shutdown operation is not needed, the drainage process is not interrupted, waste of waste pipelines is avoided, and corrosion and pollution risks are avoided; the green and environment-friendly production concept is met.

The invention relates to a synergistic composition for preventing and treating celery root rot. The tannic acid and fludioxonil in the synergistic composition disclosed by the invention show a relatively good synergistic effect in a compounding mass ratio range of (1: 50)-(50: 1). According to the synergistic composition disclosed by the invention, tannic acid with weak bacteriostatic activity on celery root rot and fludioxonil with excellent bacteriostatic activity are compounded for use, so that a remarkable synergistic effect is achieved, the prevention and treatment effect is far higher than that of a single agent, and the synergistic effect is achieved by reducing pesticide. Besides, according to the synergistic composition disclosed by the invention, the plant source tannic acid and the chemical bactericide fludioxonil are compounded for use, and the use amount of chemical agents is reduced, so that the resistance risk of the chemical bactericide is reduced, pesticide residues and ecological environment pollution are reduced, and the synergistic composition has a good application prospect.

The invention provides a reverse osmosis optimal dosing system and method based on ultraviolet sterilization, and the method comprises the following steps: firstly, the system monitors the influent microorganism load and water quality in real time, dynamically calculates the required ultraviolet dosage, and precisely adjusts the power of an ultraviolet sterilizer; secondly, according to the residual microorganism risk and the water inlet flow after ultraviolet treatment, the feeding amount of an oxidizing bactericide (such as sodium hypochlorite) is accurately adjusted according to a PID control strategy combining feedforward and feedback; meanwhile, according to the oxidation-reduction potential of the sterilized water body, a reducing agent (such as sodium hydrogen sulfite) is intelligently added to protect the reverse osmosis membrane. And finally, efficient cooperation of ultraviolet physical sterilization and chemical sterilization is achieved, on the premise that strict control over microbial pollution is guaranteed, the consumption and operation cost of chemical agents are remarkably reduced, generation of by-products is reduced, the service life of a reverse osmosis membrane is prolonged, and the intelligent level of system operation and the overall economic benefits are improved.

The invention discloses a mesoporous biological ceramic filter sponge as well as a preparation method and application thereof, and belongs to the technical field of water treatment and air purification. The filtering sponge adopts a three-layer composite structure and comprises a three-dimensional porous sponge framework, a mesoporous ceramic transition layer and a nano metal thorn functional layer. Microorganism inactivation is achieved through a unique'adsorption-locking-puncturing 'physical mechanism, the inactivation rate of bacteria and viruses exceeds 99.9% under the condition that no chemical agent is used, meanwhile, heavy metal pollutants can be selectively removed, and beneficial mineral substances are reserved. The filtering sponge has the advantages of high porosity, large specific surface area, long service life and the like, and can be widely applied to the fields of drinking water treatment, sewage treatment, air purification and the like.

The utility model relates to a high-efficiency multi-polar magnetic energy water treatment device, which belongs to the technical field of water treatment equipment and is characterized in that an n-shaped magnetic treatment channel is formed by arranging an even number of magnetic components in a cylindrical protective shell, the magnetic path is 500-1500mm, and water flow grading magnetic treatment is realized by matching with a water distribution bin, an upper bin cover component and a lower bin cover component. Water flows into the left magnetic assembly through the water inlet area, enters the right magnetic assembly for secondary treatment after being transferred and is discharged from the water outlet area. The device solves the problems of insufficient magnetic path and unstable treatment effect in the prior art, is compact in modular design and high in pressure bearing capacity, can be applied to systems for pure water preparation, steam boilers, domestic hot water, deep well geothermal sources and the like, does not need chemical agents, is low in operation cost, is suitable for non-circulating systems, and improves the universality of a magnetic treatment technology.

The invention discloses a spectral analysis-based PCB chemical preparation ratio intelligent adjustment method and system, and relates to the technical field of industrial data processing. The method comprises the following steps: monitoring a cleaning solution flowing through a PCB cleaning tank in real time to obtain continuous spectrum time sequence data; analyzing in real time to obtain a copper ion concentration value sequence and a corrosion inhibitor concentration value sequence, and calculating a copper ion concentration change rate and a corrosion inhibitor concentration change rate in real time; analyzing the real-time change trend of the copper ion concentration value and the corrosion inhibitor concentration value, and analyzing the real-time numerical relationship between the copper ion concentration change rate and the corrosion inhibitor concentration change rate; judging whether a harmful side reaction which mainly consumes the corrosion inhibitor occurs or not; and when the harmful side reaction is judged to occur, inputting the copper ion concentration change rate and the corrosion inhibitor concentration change rate into a pre-trained proportioning optimization model, and outputting to obtain an acid agent adjustment amount and a corrosion inhibitor adjustment amount. According to the invention, the precise, real-time and intelligent adjustment of the proportion of the PCB chemical agent is realized.

The utility model discloses a kind of oil removal and air flotation integrated water treatment equipment, including water treatment processor, water inlet pipeline and water outlet pipeline are respectively arranged at the both ends of water treatment processor;Two baffle plates are arranged in water treatment processor, further include: oil removal device and air flotation device, are arranged in the area between water inlet pipeline and the baffle plate close to water inlet pipeline, oil removal device is used to remove part of oiliness in water inlet substance;Air flotation device is used to produce bubble to make impurity in water inlet float out;Scraping residue device is arranged in the area between two baffle plates, for removing the float dregs generated by air flotation.The integrated water treatment equipment significantly improves the removal efficiency of oiliness in high oil content wastewater, overcomes its interference to air flotation process, solves the fundamental problem of low treatment efficiency of traditional air flotation process;At the same time, by efficient built-in oil removal mechanism, reduce or eliminate the dependence on excessive chemical agent, thereby solve the problem of large amount of chemical agent consumption caused by low efficiency of traditional air flotation process.

The present invention addresses the problem of providing: a metal surface treatment agent which can form a film having excellent corrosion resistance and excellent hydrophilicity on or over a surface of a metal material; a method of producing a metal material having a film by using the metal surface treatment agent; and a metal material having a film, which is obtained by the method. A chemical agent, which contains prescribed amounts of a water-soluble or water-dispersible resin (A) and a compound (B) having a nitrile group and an amino group, is capable of forming a film having excellent corrosion resistance and excellent hydrophilicity on or over a surface of a metal material and, therefore, can solve the above-described problem.

1. The name of the design product: large flow diaphragm pump. 2. The use of the design product: for suction and discharge of chemical agents. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The invention discloses a sludge dewatering device and method based on a siphon principle, and relates to the technical field of soil dewatering. The device comprises a high-level water tank with a valve, a low-level water tank, a dehydration container and a three-dimensional drainage grid, wherein the high-level water tank is communicated with the low-level water tank through a vertical pipe; the top of the dehydration container is hermetically connected with a cover body with a through hole, the through hole is communicated with the vertical pipe through an elbow and a transverse pipe, the three-dimensional drainage grid comprises a vertical drainage rope and a water guide rope, and a top rope bundle head is inserted into the elbow. During working, water flow in the high-level water tank forms siphoning, and the transverse pipe generates negative pressure to drive sludge water to be discharged into the low-level water tank through the drainage grid and the pipeline. The device is free of power and chemical agents, simple and portable in structure, rapid to assemble, uniform and efficient in dehydration and suitable for engineering construction, disaster emergency and other scenes, and in-situ resource utilization of soil is achieved.

This invention discloses an underwater chemical agent injection metering valve, relating to the field of marine oil and gas extraction technology. It includes an inlet pipe, a first outlet pipe, a second outlet pipe, an outlet connector, and a valve assembly. A first venturi tube is provided on the inlet pipe; a second venturi tube is provided on the second outlet pipe. The throat diameter of the first venturi tube is larger than that of the second venturi tube, and the diameter of the first outlet pipe is larger than that of the second venturi tube. A second connection port and a third connection port are respectively connected to the inlets of the first and second outlet pipes. The valve assembly is used to control whether the first connection port is connected to the second and third connection ports. The beneficial effects of this invention are: through the structural and dimensional design of the first outlet pipe, the first venturi tube, and the second venturi tube, the large-range ratio of the underwater chemical agent injection metering valve of this invention is greatly improved, enabling it to adapt to different viscosities and control flow rates.

The invention relates to the field of silkworm breeding, in particular to a composite disinfection method suitable for a silkworm house and a silkworm rearing instrument. The composite disinfection method comprises the following steps: S1, carrying out physical and chemical combined preliminary disinfection; S11, cleaning and airing a movable instrument, and cleaning and disinfecting the silkworm house by using ultraviolet rays; s12, disinfecting the movable appliance and the silkworm house by using a chemical agent; s2, deep disinfection is conducted, specifically, a cinnamyl aldehyde and potassium permanganate mixed solution is taken to disinfect a silkworm house, then sulfur powder is used for fumigation disinfection, exhaust is conducted till no pungent smell is left, and the cinnamyl aldehyde and potassium permanganate mixed solution is prepared from cinnamyl aldehyde, water and potassium permanganate according to the volume ratio of 3-4: 5: 1-2; s3, disinfection before the silkworm period. Compared with the prior art, the disinfection method has the advantages that after the silkworm room and the silkworm rearing instrument are disinfected, few sedimentation bacteria are detected on the silkworm room and the silkworm rearing instrument, nuclear polyhedrosis viruses are not detected in silkworm bodies, the silkworm death rate is reduced to 0.3-1.1% and is far lower than that of other disinfection methods when the silkworm room or the silkworm rearing instrument is used for trial breeding of silkworm eggs, and the effect is extremely good.

The utility model relates to the technical field of purification of phenyl dichlorophosphate, in particular to a phenyl dichlorophosphate purifying and filtering device which comprises a shell, an air inlet pipe is fixedly connected to the side wall of the shell, a cavity is formed in the side wall of the shell, and a plurality of hole grooves are distributed in the inner wall of the shell in an annular array mode. A vertical rod is rotatably connected to the lower end of the upper cover, a cavity is formed in the vertical rod, a plurality of transverse rods are fixedly connected to the side wall of the vertical rod in an annular array distribution mode, cavities are formed in the transverse rods, a plurality of holes are formed in the two sides of each transverse rod at equal intervals, and two exhaust ports are formed in the upper end of the upper cover in a penetrating mode. And a filter screen is fixedly connected to the interior of the exhaust port. Most harmful substances in waste gas are preliminarily removed through chemical agents, then residual small particles, aerosol or incompletely reacted chemical agents are further captured and filtered out through a filter screen, and the more comprehensive purification and filtration effect on the waste gas is ensured through a double purification and filtration mechanism.

The present application relates to the field of coking flue gas purification, and particularly relates to a coking furnace flue gas purification device, which comprises a lapping ground plate and a stirring flocculation cylinder fixedly installed on the top outer surface of the lapping ground plate, a atmospheric pollution liquid discharge tank is fixedly installed on the bottom surface of the lapping ground plate, a flocculation and caking backflow pipe arranged on the bottom surface of the stirring flocculation cylinder is fixedly connected to the input end of the atmospheric pollution liquid discharge tank, and a flocculation agent conveying tank is arranged on the top surface of the lapping ground plate. The combined flocculation agent conveying tank is used to infuse the chemical agent and water for flocculation and sedimentation into the stirring flocculation cylinder, so that the agent and water can fill the inside of the stirring flocculation cylinder. At this time, the coking furnace flue gas is infused into the inside of the stirring flocculation cylinder. When the waste gas starts to float from the bottom of the chemical agent, the stirring blade plates are stirred by the combined motor two, so that the waste gas and the chemical agent are fully mixed and stirred together.

The application provides a strain of antagonistic cucumber downy mildew Microbacterium luteum C10-2 and application thereof, and belongs to the technical field of biocontrol bacteria. The Microbacterium luteum C10-2 is preserved in the China Center for Type Culture Collection, and the preservation number is CCTCC NO: M 20253025. The strain can effectively inhibit cucumber downy mildew. Indoor test shows that the spore germination inhibition rate of the strain on Pseudoperonospora cubensis is 86.54%, the leaf disc prevention efficiency is 84.23%, and the strain is superior to the chemical agent dimethomorph; the fermentation liquor of the strain is sprayed in a field at a concentration of 1x10 8 cfu / mL, and the prevention efficiency reaches 80.50%. The strain can stably colonize in cucumber, inhibit pathogenic bacteria infection, and is environment-friendly, free of drug hazards and not prone to drug resistance. The application provides a new strain resource for green prevention and control of cucumber downy mildew, and has a wide application prospect.

The utility model relates to the technical field of semiconductor material processing, in particular to a wafer cleaning jig which comprises a bottom plate provided with a second limiting block, and the second limiting block is provided with a plurality of clamping grooves; the number of the stand columns is two, and the two stand columns are oppositely arranged on the two sides of the bottom plate; each stand column is provided with a first limiting block, and each first limiting block is provided with a plurality of clamping grooves. The clamping groove of the first limiting block and the clamping groove of the second limiting block are matched with each other and are used for clamping a wafer; and the cross beam is arranged between the two stand columns. The provided wafer cleaning jig successfully solves the problem of cleaning wafers of different sizes in a cleaning tank with the same chemical agent capacity through the unique inclined insertion piece design, effectively reduces the usage amount of chemical agents, reduces the cost and the recovery processing amount of liquid medicine, has the advantages of simultaneously cleaning a plurality of wafers, being simple in structure and convenient to take and place, and is suitable for popularization and application. And the method has a remarkable practical value and a wide application prospect in a semiconductor wafer cleaning process.

This invention belongs to the field of wastewater treatment technology and discloses a mechanical catalytic treatment method and system for wastewater and contaminated groundwater. The mechanical catalytic treatment method for wastewater and contaminated groundwater includes the following steps: adding a treatment agent to the wastewater to be treated, mixing and reacting, filtering, and completing the wastewater treatment; wherein, the treatment agent includes at least one of piezoelectric catalytic material and magnetic resin; the mixing reaction is carried out under ultrasonic cavitation and / or spiral aeration conditions; the piezoelectric catalytic material includes a porous plant cellulose fiber carrier and a C3N5 functional layer in situ grown on the surface of the carrier; the magnetic resin includes a benzo-melamine-formaldehyde resin matrix with sulfonic acid groups bonded to a benzene ring and Fe3O4 magnetic nanoparticles uniformly dispersed in the resin matrix. This invention eliminates the need for chemical agents in wastewater treatment, avoids secondary pollution, effectively treats complex water bodies while reducing operating costs, and possesses good environmental friendliness and practicality.

The invention relates to the technical field of crossing of biological control and chemical control of agricultural pests. The invention provides a synergistic prevention and treatment composition containing dsLCP1 and a chemical agent for Frankliniella occidentalis, the synergistic prevention and treatment composition for Frankliniella occidentalis comprises the dsLCP1 and the chemical agent, and the nucleotide sequence of the dsLCP1 is shown as SEQ ID NO.1. The invention further provides a preparation method of the synergistic prevention and treatment composition for Frankliniella occidentalis. The chemical agent is spirotetramat or pyrafluxazole amide. The invention further provides a preparation method of the synergistic prevention and treatment composition containing the dsLCP1 and the chemical agent for the Frankliniella occidentalis. The invention further provides a control method for the plant Frankliniella occidentalis. The invention further provides application of the synergistic prevention and control composition containing the dsLCP1 and the chemical agent for the Frankliniella occidentalis to prevention and control of the Frankliniella occidentalis. The synergistic prevention and control composition containing the dsLCP1 and the chemical agent for the Frankliniella occidentalis provided by the invention solves the problems of prevention and control faults in an egg-adult stage of the Frankliniella occidentalis and insufficient prevention effect of the chemical agent. After compounding, the dosage of chemical agents can be reduced, and pesticide residues are reduced.

The utility model discloses a surface treatment mechanism for producing and processing self-tapping screws, which belongs to the technical field of screw production and comprises a box body, a fixing frame is fixedly welded at the top of the box body, and a hydraulic cylinder is fixedly connected with the center end of the top of the fixing frame. The two sides of the box body are fixedly connected with air pumps correspondingly, a fixing rod is arranged at the bottom of a telescopic shaft of the hydraulic cylinder, a containing box is fixedly connected to the bottom of the fixing rod, an air conveying pipe is fixedly connected to the inner wall of the box body, a plurality of air outlet pipes are arranged on the inner side of the air conveying pipe, and a servo motor is fixedly welded to the center end of the bottom of the box body; the bottom of a telescopic shaft of the hydraulic cylinder is fixedly connected with a protruding block, the two sides of the air conveying pipe are fixedly connected with air inlet pipes correspondingly, the tapping screws can make full contact with chemical agents, meanwhile, the tapping screws can be dried, and practicability is high.

This utility model relates to a gas wellhead chemical dosing device, belonging to the field of gas wellhead chemical dosing. The device includes a tank for holding the chemical agent; the upper part of the tank is equipped with a dosing pipeline and a venting pipeline; the lower part of the tank is equipped with a chemical outlet pipeline for connection to the wellhead; and the upper part of the tank is also equipped with a pressurization pipeline for connection to a casing test valve. This device utilizes the energy of the gas in the gas well and the gravity of the chemical agent to achieve dosing, eliminating the need for additional pressurization equipment, making it convenient to operate and implement.

The invention discloses an application of p-xylene in prevention and control of straight-spot fly imagoes, and belongs to the technical field of agricultural planting research. Aiming at the problems that the yield of the chenopodium quinoa willd is seriously lost by the chenopodium quinoa willd and the existing prevention and treatment means only depend on chemical agents, the natural component p-xylene of the chenopodium quinoa willd is utilized to remarkably attract adults of the chenopodium quinoa willd, and the chenopodium quinoa willd attractant can be directly used for attracting the adults of the chenopodium quinoa willd and also can be used for preparing the attractant for the the concentration of p-xylene in the attractant is 0.1 mu g / mu L to 100 mu g / mu L. The application is green and environment-friendly, does not need to depend on chemical agents, provides a new way for green prevention and control of the adult straight-spot fly, broadens the prevention and control means of the chenopodium quinoa willd pests, and has important practical application value and scientific significance.

The invention discloses a printing and dyeing sewage treatment sedimentation tank. The printing and dyeing sewage treatment sedimentation tank comprises a tank body, a stirring module and a separation module, the tank body is divided into a water inlet area, a settling area and a water outlet area, and the bottom of the tank body is used as a sludge area; the stirring module is arranged in the water inlet area and used for uniformly mixing sewage and chemical agents, and the separation module is arranged in the water outlet area and used for physically separating small particles. The stirring module replaces the increase of the cleaning frequency, so that the probability of blockage of the tank body is reduced, the tank body runs more stably, the economic cost, the labor cost and the like of the tank body are reduced, and the economical efficiency is better. The separation module is used for filtering the water discharged from the water outlet area, so that small particles are intercepted, and the water quality of the discharged water is favorably improved.

The invention relates to the field of metal material corrosion and protection, and provides a seawater film-forming device and method for a marine copper-nickel alloy heat exchange tube, and the seawater film-forming method comprises the following steps: S1, preparing the seawater film-forming device; s2, calculating the total flow Q of the pipeline system: Q = n * A * v * 3600 / 1000000; s3, determining the flow of the sea water pump, wherein the flow of the sea water pump is equal to 1.2-1.3 Q; s4, building a seawater film forming device; s5, setting the flow velocity of a pipeline, namely debugging the water by using a starter to ensure that the flow velocity in the heat exchange pipe reaches 1.0-3.0 m / s; and S6, seawater film forming time: forming a film after the heat exchange tube is continuously scoured by seawater for 20-60 days. According to the seawater film forming method for the marine copper-nickel alloy heat exchange tube, the seawater film forming method is easy to operate and convenient to implement; the film forming effect is good; no chemical agent is used, so that the method is environment-friendly.

The utility model belongs to the technical field of recycling devices, and discloses a machine tool cutting fluid recycling device which comprises a box body, a recycling mechanism is arranged in the box body, and the recycling mechanism extends to the outer side of the box body; the recovery mechanism comprises two fixing plates, during use, cutting fluid is poured into the box body firstly, and the thrown cutting fluid sequentially penetrates through the first plate frame type filter screen and the second plate frame type filter screen under the influence of gravity and falls into the bottom of the box body; at the moment, a plate frame type filter screen I and a plate frame type filter screen II can preliminarily filter solid impurities and metal chips in the cutting fluid, and then an auxiliary component is matched, so that the preliminarily filtered cutting fluid can fully react with a chemical agent to form suspended solids which are easy to separate; and finally, the first plate-and-frame filter screen, the second plate-and-frame filter screen and the suspended matter are sequentially taken out, and through the structure, solid impurities, metal scraps, oil stains and organic matter in the filter screen can be taken out so that the filter screen can be recycled in the later period.

The present application belongs to the technical field of oil and gas field produced water treatment, and particularly relates to an ammonia nitrogen treatment system and method for oil field sulfur-containing produced water. The method comprises the following steps: sending the oil field sulfur-containing produced water into a first buffer pool, reducing sulfides through two-stage aeration of a cyclone aerator and an aeration nozzle device, overflowing from the first buffer pool to a second buffer pool when the first buffer pool reaches a water outlet height, and removing ammonia nitrogen by adding an ammonia nitrogen remover through a conventional dosing port of a dosing device. The present application fully utilizes the characteristics of aeration sulfur removal, and through the addition of a targeted chemical agent and the control of key parameters, purifies and softens the oil field sulfur-containing produced water in one step. After treatment, the water quality only needs to be further filtered by two stages of fine filtration, and the outlet water quality directly meets the steam boiler feed water requirements.

The invention relates to the technical field of leather processing, in particular to a leather softening device for leather processing, which comprises a rotary drum mechanism, a first side plate mechanism and a second side plate mechanism are respectively arranged on two sides of the rotary drum mechanism, and a baffle mechanism and a filter drum mechanism which are uniformly distributed in a surrounding manner are arranged on the inner side of the rotary drum mechanism. Flexible roller mechanisms which are uniformly distributed in a surrounding manner are arranged on the periphery of the filter cartridge mechanism; by arranging the baffle mechanism capable of swinging back and forth, a baffle can be driven to swing back and forth in the rotating process of the rotary drum, so that leather is continuously collided, beaten and rubbed in the V-shaped groove, the mechanical softening effect of the leather is enhanced, the permeation uniformity of a chemical agent is also improved, and the softening efficiency and quality are improved; by arranging the flexible roller mechanism, the rubbing roller rotates while rotating along with the whole rotating drum, the multi-direction and multi-angle rubbing effect on the leather is achieved, particularly, secondary rubbing is conducted in the leather falling process, the fiber structure is further loosened, and the softening uniformity is enhanced.

The utility model relates to the technical field of electroplating wastewater recovery, in particular to a wastewater recovery device for electroplating equipment, which comprises a plate-and-frame filter press, a water inlet pipe, a first water outlet pipe, an activated carbon filter box and an activated carbon adsorption plate, the water inlet pipe is arranged on the plate-and-frame filter press, and the side surface of the plate-and-frame filter press is communicated with the activated carbon filter box through the first water outlet pipe; an activated carbon adsorption plate is arranged in the activated carbon filter box. The electroplating equipment wastewater recovery device integrates multi-stage treatment means of carrying out primary solid-liquid separation by the plate-and-frame filter press, adsorbing organic pollutants and part of heavy metals by the activated carbon filter box, removing residual heavy metals by the ion exchange tank and the like, and provides an integrated, efficient and economical solution; according to the method, heavy metal ions and organic pollutants in the electroplating wastewater can be more effectively removed, the treatment period is shortened, and the use amount of chemical agents is reduced, so that the treatment cost is reduced, and meanwhile, the environmental friendliness of the treatment process and effective recycling of resources are ensured.