670 results about "Chemical agent" 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 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 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 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 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.

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 application discloses a method for removing heavy metal complexes in high-salinity wastewater and recovering heavy metals step by step in cooperation with E-UV, and belongs to the technical field of wastewater treatment. The method adopts a series connection type two-stage reactor: the first stage is a pure electrochemical unit (DSA anode + carbon felt cathode), which is used for breaking the complex of easily degradable heavy metal complexes and depositing and recovering the first target metal; the second stage is an electrochemical-ultraviolet cooperative unit (DSA anode, carbon felt cathode and ultraviolet lamp are arranged in the same chamber), which is used for breaking the complex of difficult-to-degrade complexes by ultraviolet activation and strengthening free radicals and recovering the second target metal. High-salinity wastewater containing heavy metal complexes flows through the two-stage reactor in sequence, and selective heavy metal complex breaking and step-by-step recovery are realized by adjusting and controlling the on-off time of the ultraviolet lamp. The application breaks through the bottleneck of high-salinity system treatment, and when a double complex system is simultaneously treated, the metal recovery rate is greater than or equal to 95%, the TOC removal rate is greater than 90%, and no chemical reagent needs to be added, so that the application has high efficiency and environmental protection.

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.

The invention discloses an application of trichoderma griseaginii TR2122 in prevention and treatment of beet root rot, a strain of the trichoderma griseaginii TR2122 is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation number is CGMCC No.21025, and the strain has strong antagonism and hyperparasitism effects on fusarium oxysporum causing the beet root rot. Meanwhile, the invention further provides a microbial preparation containing the live spores of the strain, the spore content is not lower than 2 * 10 < 8 > CFU / g, and the microbial preparation is preferably wettable powder containing a parent drug, a dispersing agent, a wetting agent and filler. In addition, the invention further discloses a preparation method of the preparation, and the preparation method comprises the steps of fermentation culture, concentration drying and mixing preparation. The strain and the preparation have stable and lasting control effect on beet root rot, are superior to or equivalent to conventional chemical agents, are safe and environment-friendly, and provide an effective solution for beet green control.

A process for separating solids and oil from water without requiring waste haul-off comprising six phases. In the first phase, a stream of raw saltwater is treated with desired chemistry and a beneficial reuse chemical effluent. In the second phase and third phase, the water undergoes oil separation, and the water is stored to facilitate phase changes. In the fourth phase, the saltwater is treated with desired chemistries and a beneficial reuse chemical effluent. In the fifth phase, the water is stored and agitated. In the sixth phase, the water passes through a mechanical filter—or similar unit—the stream then directed to a chemical reactor. Desired chemistries and solids removed from the filter are added to the reactor. The reactor outputs a beneficial reuse chemical effluent which can be recycled to Phase 1 and Phase 4—and prefilter Phase 6—of the system.

The present application relates to the technical field of energetic material processing, in particular to an energetic material processing method, which comprises: disassembling and cleaning energetic materials to obtain chemical agent decontamination water, solid energy substance and metal parts; adding first lye and organic solvent to the chemical agent decontamination water, stirring and reacting to obtain chemical hydrolysis liquid; performing first energy hydrolysis reaction on the solid energy substance to obtain pretreated energy hydrolysis liquid; performing stability analysis on the pretreated energy hydrolysis liquid; if the stability meets the requirements, adding metal precipitant, filtering and processing to obtain energy hydrolysis liquid; if the stability does not meet the requirements, performing second energy hydrolysis reaction on the pretreated energy hydrolysis liquid, adding metal precipitant, filtering and processing to obtain energy hydrolysis liquid; mixing the chemical hydrolysis liquid and the energy hydrolysis liquid, and performing supercritical water oxidation processing and salt removal processing. The method provided by the present application is safer and more reliable.

The utility model belongs to the technical field of waste liquid treatment, and particularly relates to an electrophoretic coating waste liquid circulating treatment device which comprises a discharge box, a treatment box is fixed to the upper end of the discharge box, a supporting plate is fixed to the upper end of the treatment box, a motor is fixed in the supporting plate, and the output end of the motor penetrates through the interior of the supporting plate and extends to the outside. A first gear is fixed to the output end of the motor, a second gear is rotationally connected to the position, located at the lower end of the first gear, in the supporting plate, and the first gear and the second gear are connected in a meshed mode. A gear transmission structure can be driven by a motor to drive a rotating sleeve rod to rotate, a connecting rod and a scraping plate are fixed to the outer side of the rotating sleeve rod, the connecting rod and the scraping plate rotate, waste liquid can be stirred and promoted to be fully mixed with chemical agents, impurities attached to the inner wall of the treatment box can be removed in the stirring process, and the treatment effect is improved. The waste liquid pretreatment efficiency and quality are improved.

The invention provides a modular aquatic higher plant ecological treatment method and system for sea urchin / sea cucumber culture tail water, and belongs to the technical field of culture tail water treatment. The gradient process of tail water introduction, first-stage rough filtration, second-stage ecological purification and third-stage deep purification is adopted, and the treated tail water is shunted and reused in a culture pond or discharged after reaching the standard. No chemical agent is added, residue bait recycling and tail water circulation are achieved, purification is stable and efficient, cost is reduced, operation and maintenance are easy, the method is suitable for large-scale aquaculture, treated tail water can be directly recycled after being disinfected, seawater resources are greatly saved, a complete aquaculture water circulation closed loop is formed, the ecological property, practicability and economical efficiency are achieved, and the method is suitable for large-scale aquaculture. The method is suitable for tail water treatment and resource utilization of various sea urchin / sea cucumber culture modes.

The utility model relates to detection equipment for a chemical agent for metal, which comprises a seat body I, the upper end of the seat body I is connected with a three-axis moving platform, and the interior of the seat body I is fixedly connected with a drying box, a weight measuring part, an oil coating part and a cleaning test component; one side of the Z-axis moving end of the three-axis moving platform is fixedly connected with a swing test assembly, and the swing test assembly comprises a reciprocating swing unit; the reciprocating swing unit comprises a first motor, a third rotary disc, a rod body, a swing rod, a third movable groove and an electric clamping jaw. The cleaning test assembly comprises a shell II, a cavity, a cover body, an opening and an eddy current test assisting unit; the eddy current testing assisting unit comprises a second motor, a second rotating disc rotationally connected to the inner wall of the cavity, a first rotating disc rotationally connected to the lower end of the cover body, and a column body connected between the first rotating disc and the second rotating disc. Compared with the prior art, the dynamic condition of a workpiece in actual use can be simulated, different working conditions can be simulated, the test result has higher application value, cleaning process parameters are accurately verified and optimized, and universality is achieved.