499 results about "Suspended particles" patented technology

The invention provides an underwater image recognition method based on deep learning, and relates to the technical field of information, and the method comprises the steps: preprocessing an original image, recognizing image texture interference caused by the density of suspended particles in an interfered region, separating a noise signal, and obtaining a first processed image; performing deep analysis on the multi-scale feature response values and the key feature points in combination with an underwater target recognition task, and judging the category and position information of the target object to obtain a preliminary recognition result; comparing the preliminary identification result with an actual marine environment condition to obtain a matching degree between the identification result and an expected target feature, and if the matching degree is lower than a preset matching threshold value, adjusting a scale weight parameter and a feature point screening threshold value to obtain corrected identification data; and analyzing changes caused by environmental condition fluctuation according to the corrected identification data, generating target identification output, and determining the accurate position and category information of the underwater target through confidence weighted fusion and coordinate precision correction processing of the identification data.

The invention relates to the technical field of sewage detection, provides an intelligent detection method for suspended particles in coking sewage based on image deep learning, and aims to solve the problems of detection lag and low precision in the prior art. According to the technical scheme, the method comprises the following steps: synchronously acquiring sound wave and image data through a high-frequency ultrasonic transducer and an industrial camera, and extracting acoustic parameters and optical characteristic parameters; using a dual-channel convolutional neural network to fuse features, and combining a cross-modal attention mechanism to perform dynamic weighting; and outputting a particle concentration classification result and a particle size distribution prediction value through a multi-task learning model, and performing online learning to compensate environmental interference factors. The device is mainly used for realizing real-time and high-precision suspended particle monitoring and automatic process adjustment of coking sewage treatment.

The invention belongs to the technical field of oil-gas-water separation equipment, and discloses an ultrasonic detonation rotational flow microbubble flotation device which comprises a vertical container tank with inner and outer stepped double-barrel design and a separation inner barrel, an oil gathering umbrella is arranged on the upper portion of the interior, an oil discharge connector is arranged on the outer wall of one side, and surrounding physical demulsification coalescence filler is arranged on the upper portion of the area between the tank and the inner barrel. And the lower part of the separation inner cylinder is provided with a reverse symmetrical double-tangential rotational flow inlet, the bottom of the separation inner cylinder is externally provided with a purified backflow water inlet and is communicated with the purified water diversion outlet in a process manner, and the bottom of the separation inner cylinder is internally provided with a gas-water mixer and an ultrasonic knocker. By combining ultrasonic cavitation, rotational flow centrifugation, micro-nano bubbles and physical coalescence demulsification technologies, the diameter of the bubbles is reduced by 15 microns or below through the ultrasonic detonation cavitation effect, fine oil drops and suspended particles which are difficult to treat through traditional flotation and are 10 microns or below can be captured, the method is suitable for multi-phase separation of discrete high-concentration fine pollutants, and the flotation efficiency is improved. Complex separation scenes such as oily sewage, micro-plastics and mineral flotation can be treated.

The invention discloses a seawater desalination treatment system and method based on a penetration method, and particularly relates to the technical field of seawater desalination treatment.The seawater desalination treatment system is provided with an online monitoring module, and various indexes in the seawater desalination treatment process are monitored through a multi-source sensor; a seawater pollution treatment module is arranged to remove suspended particles and pollutants in seawater; a seawater desalination treatment module is arranged for deep desalination; setting an equipment management module to judge whether equipment maintenance is needed or not based on the real-time operation data of the equipment; a semi-permeable membrane loss prediction module is arranged for semi-permeable membrane loss prediction; setting a semi-permeable membrane maintenance control module to automatically match a corresponding maintenance strategy according to the predicted membrane loss degree; a forward osmosis and reverse osmosis coupling process is combined, so that the desalination rate and the energy consumption efficiency ratio are improved, and the service life of the semipermeable membrane is effectively prolonged; an intelligent monitoring-prediction-control system is constructed, and the stability and reliability of the technological process are guaranteed.

The invention relates to the technical field of ocean structure monitoring, in particular to a method for monitoring the scouring degree of a pile foundation of an offshore wind power station through bubble tracing, which comprises the following steps of: 1, constructing a bubble feature data acquiring an underwater image, manually segmenting and selecting key bubbles, extracting contour features of the key bubbles and expressing the contour features by vectors, a Zernike moment is used for grouping according to shapes, and a bubble feature database is constructed; and 2, identifying underwater bubbles: obtaining an underwater background image, constructing a dynamic background, obtaining an image containing suspended particles, extracting a foreground main body through a background subtraction method, comparing contour features of the foreground main body with a bubble feature database, and screening out the bubbles. By introducing an innovative method combining image recognition, feature modeling and physical inversion, the key problems of bubble misjudgment, track loss, inaccurate flow velocity and the like in a traditional bubble tracing technology are effectively solved, and high-precision, low-cost and automatic monitoring of the scouring process of the offshore wind power pile foundation is achieved.

The invention discloses a ventilation method and device based on precise monitoring of the environment in a farm and a storage medium, relates to the technical field of analysis control, and constructs a three-dimensional pollution concentration field model by collecting data such as the pollution gas concentration, suspended particles, temperature and humidity, airflow velocity and the like of a manure ditch in real time and combining the spatial layout of a breeding house. On the basis of the model and ventilation constraints, a virtual ventilation strategy composed of multiple sets of air supply speeds, air directions and air opening degrees is automatically generated, simulation is conducted, disturbance scores are calculated, and the optimal strategy is selected to be applied to ventilation control. Environmental parameters are continuously monitored in the ventilation process, if it is detected that pollutants rise or temperature and humidity are abnormal, the strategy generation and screening process is automatically restarted, and dynamic closed-loop optimization adjustment of a ventilation scheme is achieved; dynamic ventilation control can be carried out according to the actual manure environment, the influence of gas backflow and pollution disturbance is reduced, and the influence on the farm environment is reduced; the influence on the growth health of livestock and poultry is reduced.

The invention relates to the technical field of a seabed substrate advanced detection device and method for a seabed mining vehicle, and provides a seabed substrate advanced detection device and method for a seabed mining vehicle, which can simultaneously obtain submarine topography and landform and detect multiple parameters of a seabed substrate. The deep sea detection system is matched with a mine car to ensure smooth proceeding of a rear mine car in deep sea bottom detection, and comprises a sea surface data processing system and a frame with the cross section in a structure shaped like a Chinese character'tian ', a master control device, a signal receiver and at least four detection modules arranged in a matrix are arranged on the frame, and the master control device is used for controlling the detection modules. The signal receiver is used for transmitting information of the detection module and the sea surface receiving device; the detection module comprises a side-scan sonar module used for rapidly obtaining the topography and landform in front, a transverse push toothed plate used for cutting into a soil body, a turbidity meter module used for measuring the concentration of suspended particles and dissolved matters in the seabed, and a pressing plate module used for obtaining the bearing capacity and the subsidence index of the seabed sediment.

The invention discloses a sampling device for detecting the quality of white spirit, and aims to solve the problem that the content and the distribution condition of suspended particles in the white spirit cannot be comprehensively known due to the fact that only one position is used for sampling when the existing sampling device is used for sampling the white spirit. A tooth block and a push block on the two sides of a movable rod are used for driving different assemblies respectively, the push block drives a connecting valve to rotate by shifting an elastic shifting piece, a water passing hole in the push block is aligned with a liquid inlet pipe to communicate the liquid inlet pipe, it is guaranteed that white spirit enters a liquid pumping pipe through the liquid inlet pipe and the water passing hole, and the tooth block is matched to drive a connecting gear to rotate; the reciprocating frame reciprocates to drive the piston in the liquid extraction pipe to reciprocate so as to extract white spirit and inject the white spirit into the sample storage box, so that the sampling of the white spirit can be completed, multi-point sampling can be carried out at different positions in the white spirit, and the uniformity and the quality stability of the white spirit can be evaluated more accurately.

The application relates to a device for water-solid contact electrocatalytic degradation of trace antibiotics by using a high-charge-density nanofiber membrane, which comprises the following steps: S1, preparing Ti3C2T x MXene nanosheets; S2, preparing Ti3C2T x MXene / DMF spinning solution; S3, preparing high-electronegativity polymer spinning solution, dissolving high-electronegativity polymer powder in DMF and acetone, performing magnetic stirring by using a PTFE stirring rod magnet to perform mixing, and obtaining high-electronegativity polymer spinning solution; S4, mixing Ti3C2T x MXene / DMF spinning solution and the high-electronegativity polymer spinning solution, and then performing spinning, so that a high-charge-density nanofiber membrane is obtained; and S5, assembling the prepared high-charge-density nanofiber membrane into an ultrasonic filtration unit, and then making wastewater containing trace antibiotics and suspended particles enter the ultrasonic wave chamber from a water inlet pipe.

The utility model belongs to the technical field of biological denitrification of industrial aquaculture water, and particularly relates to a denitrification device suitable for an industrial aquaculture system. Comprising an aerobic nitrification zone, a carbon source zone, an aerobic denitrification zone and a suspended particle removal zone which are communicated in sequence, a filter material is arranged in the aerobic nitrification zone, and the aerobic nitrification zone is used for carrying out biological oxidation on aquaculture water to generate nitrate; the upper part of the carbon source region is filled with carbon sources; the aerobic denitrification area is used for reducing nitrate in the water body into nitrogen; the suspended particle removal area is used for removing suspended particles in the water body. A water inlet pipe is arranged at the bottom of one side wall of the aerobic nitrification area, an aerobic nitrification area overflow port is formed in the upper part of the other side wall of the aerobic nitrification area, and the internal space of the aerobic nitrification area is distributed in a shape; a water outlet pipe is arranged at the bottom of the side wall of the suspended particle removal area. According to the device, aerobic nitrification, aerobic denitrification and suspended particulate matter removal are organically integrated, intensification and modularization are realized, the device is simple in structure and convenient to operate, and the culture denitrification effect is effectively improved.

The invention relates to the technical field of sewage treatment, in particular to a sewage suspended particle morphology evolution evaluation method based on machine vision and time sequence modeling, which comprises the following steps: acquiring a sewage system suspended particle image frame, extracting edge pixel coordinates of suspended particles, measuring a region area, a boundary length and a central point, screening a morphology stable frame segment and marking, and extracting the edges of the head and tail frames, comparing to form a coverage evolution graph, analyzing background gray and gradient to obtain a brightness correction graph, and marking a stable orientation propulsion structure. According to the invention, the spatial scale and time sequence linkage analysis is carried out on the edge pixels of the suspended particle area in the image sequence, so that the precise recognition and stability labeling of the evolution characteristics of the suspended particle substance structure in the dynamic reaction environment are realized; the multi-dimensional modeling capability of boundaries, morphological evolution and geometric paths of suspended particles in a sewage treatment system is effectively improved, the problems that sample collection is tedious and parameter calibration is prone to deviation are solved, and the automation level of image recognition and the continuity, stability and precision of reaction state evaluation are improved.

Disclosed in the present invention are an aqueous triggered controlled-release saline-alkali soil conditioner and a preparation method therefor. The aqueous triggered controlled-release saline-alkali soil conditioner comprises agent A. The agent A comprises a water-soluble polymer and controlled-release suspended particles. The controlled-release suspended particles comprise alginate / anti-reverse regulator composite particulates. The alginate / anti-reverse regulator composite particulates are obtained by sequentially subjecting an alginate to two-step gel cross-linking by means of a cationic anti-reverse regulator and a high-valent metal ion-containing cross-linking agent. In the present invention, the alginate used as a main material is subjected to charged regulator-based high-speed dispersion for primary gelation and high-valent metal-based secondary gelation, thereby preparing a micron-nano powder and suspension, and incorporating a solvable organic polymer material, the functions of graded release and intelligent regulation of a product are achieved. The incorporation of an organic acid and a phosphoric acid material can not only prevent a micro-irrigation device from scaling but can also achieve triggered controlled-release of the material on demand and in a timely manner, thereby achieving the effects of multi-particle-size dispersion and precise release of the product in soil.

The invention discloses two-stage reverse osmosis water treatment equipment, and relates to the technical field of water treatment equipment, the two-stage reverse osmosis water treatment equipment comprises a shell, a flow guide net is arranged in the shell, a reverse osmosis membrane is arranged in the flow guide net, the outer side of the flow guide net is fixedly connected with a side plate, and the inner wall of the flow guide net is fixedly connected with a spiral plate. According to the two-stage reverse osmosis water treatment equipment, the spiral plate arranged on the inner side of the flow guide net can convert linear water flow into spiral rotational flow, and centrifugal force generated by the rotational flow can throw suspended particles, colloids and other impurities in water to the outer side of the flow guide net, so that the contact probability of the impurities and a reverse osmosis membrane is further reduced; meanwhile, the spiral flow channels increase the contact area and contact time of water flow and the surface of the membrane, the permeation efficiency of water molecules is improved, rigid structures of the spiral plates can play a role in supporting the flow guide nets and the reverse osmosis membrane, and side plates arranged on the outer sides of the flow guide nets can realize sealed isolation between adjacent permeation units and prevent water flow mixing among different units.

The invention provides continuous wastewater treatment equipment, which belongs to the technical field of wastewater treatment, and comprises a treatment tank and an observation window arranged in the middle of the treatment tank, and further comprises a multi-stage treatment assembly, a pollution discharge purification assembly and a stripping assembly, deep purification of the wastewater is realized through multi-stage treatment; the vertical spraying is combined with the stirring of the fan blades and the scrapers, strong water flow scouring force is formed above the elastic filter plate, meanwhile, the convex plates periodically extrude the elastic filter plate during rotation to enable the elastic filter plate to vibrate, suspended particles and impurities can be effectively prevented from being accumulated on the surface of the elastic filter plate, the risk of filter plate blockage is reduced, and meanwhile, the service life of the filter plate is prolonged. Ferric hydroxide colloid generated by ferrite reaction can more uniformly adsorb suspended particles under the driving of upper and lower water flows, and the precipitation separation of the suspended particles is accelerated; the connecting shaft rotates to drive the mounting cylinder, the arc-shaped groove of the trigger cavity is matched with the ball, the oxidation disc vibrates, the vibration strength is adjusted according to the descending amplitude of the oxidation disc, and the overall wastewater treatment efficiency is improved.

The invention relates to the technical field of filtrate recovery treatment, in particular to a filtrate recovery treatment device for large diesel engine tail gas treatment equipment, which comprises a liquid inlet section, the bottom of the liquid inlet section is communicated with a filter section, the bottom of the filter section is communicated with a purification section, and a graded filter structure is arranged in the filter section; the graded filtering structure comprises a flow guide mechanism, the flow guide mechanism is located in the liquid inlet section, a primary filtering mechanism is arranged at the bottom of the flow guide mechanism, the primary filtering mechanism is connected to the top of the interior of the filtering section in a bolted mode, a re-filtering mechanism is arranged at the bottom of the primary filtering mechanism, and the surface of the re-filtering mechanism is connected with the inner wall of the filtering section. The filtrate recovery treatment device for the large diesel engine tail gas treatment equipment has the advantage that pollutants such as suspended particles, organic matters and heavy metal ions in filtrate can be removed in multiple dimensions through the design of the liquid inlet section, the filtering section and the purifying section.

The invention discloses an environment simulation system and method for an infrared target fusion test. The system comprises a real scene simulation unit; the humidity and illumination simulation unit is used for simulating a humidity environment and an illumination environment required by a test; the atmosphere perspective simulation unit comprises an adjustable attenuation sheet and a scattering medium, so as to dynamically adjust the projection rate of a light path and control the concentration of suspended particles in real time through linkage of an aerosol generator and a laser particle analyzer; the data fitting unit is used for establishing a nonlinear mapping relation between the control parameters of the display device and the environmental physical quantity; and the control unit and the test unit are used for acquiring test parameters of the target features on the display device through infrared detection and generating a confidence coefficient value for environment simulation based on the test parameters. The control unit may allow a quantized fused simulation effect value to be generated based on the confidence value. According to the method, the technical problem that quantitative evaluation and dynamic optimization of the fusion effect are difficult to realize in the current infrared target fusion test can be effectively improved.

The invention relates to an oil-water separation membrane as well as a preparation method and application thereof, and belongs to the field of gas field brine pretreatment. The oil-water separation membrane comprises a nanofiber membrane substrate and an MOFs layer loaded on at least part of the surface of the nanofiber membrane substrate, and the MOFs layer comprises two-dimensional MOFs nanosheets; the nanofiber membrane substrate is prepared by performing electrospinning on three-dimensional MOFs and an organic polymer; the two-dimensional MOFs nanosheet is obtained by secondary growth on the surface of the nanofiber membrane substrate through hydrothermal recrystallization. The oil-water separation membrane can be used for efficiently separating petroleum pollutants and solid suspended matters in the oil and gas field produced wastewater, and can be coupled with an advanced oxidation process based on sulfate free radicals to realize synchronous and efficient removal of oil, suspended particles and organic matters in the oil and gas field produced wastewater.

The complex water environment multi-wavelength laser attenuation simulation system comprises a multi-wavelength laser emission module, a water body environment simulation module, a light splitting module and a power detection module. Seawater characteristics such as temperature, salinity and turbulence intensity of a water body are accurately controlled, parameters such as turbidity of the water body are changed by adding suspended particles such as diatomite and calcium carbonate, and high-precision simulation and measurement of laser attenuation characteristics in different underwater environments are realized by combining a multi-wavelength laser radar technology. According to the multi-wavelength underwater test system, through difference analysis among multiple wavelengths, environment simulation of laser detection capability and substance identification in different water body environments such as turbulent flow and quantitative influence among multi-wavelength laser can be effectively simulated; more comprehensive transmission characteristic experiment test verification and capability simulation under multi-wavelength laser are provided for underwater target identification, marine environment monitoring, resource exploration and other applications, and the multi-wavelength marine detection potential of future laser is expected to be improved.

The application provides a high-stability lignosulfonate-containing aqueous dye inkjet ink and a preparation method thereof, and belongs to the technical field of inkjet inks; the application constructs a repairable dynamic network through synergistic action: anchor copolymer functionalizes the surfaces of particles such as mica by using dopamine units, and the main units provide diol reaction sites; the bridging copolymer connects the particles into a three-dimensional structure by forming reversible borate ester chemical bonds with the diol sites through boronic acid groups; the synergistic action of the two suspends the particles through a gel structure during standing, and ensures long-term storage stability; during printing, the network collapses under shear force, and the viscosity sharply decreases to ensure smooth jet flow; after printing, the network self-repairs, and the viscosity is recovered to control droplet spreading, and finally, the unity of high stability and high printing performance is achieved.

The invention discloses a municipal sewage treatment device, and relates to the technical field of sewage treatment, the municipal sewage treatment device comprises a treatment tank, and the treatment tank is internally provided with a hollow cylinder coaxially arranged with the treatment tank. By means of the driving assembly, the rotating rod and the sleeve rotate at different speeds in the same direction (the rotating speed of the rotating rod is smaller than that of the sleeve), sewage and a coagulant can be fully homogenized and mixed within a short time in cooperation with high-speed stirring of the first spiral blades with small screw pitches, floc formation is rapidly promoted, and the mixing reaction efficiency is greatly improved; by means of buffer space transition between the first spiral blade and the second spiral blade and the design that the screw pitch of the second spiral blade is gradually increased, the gradient change of the stirring speed from high to low is achieved, it is guaranteed that flocs are stably coagulated and increased, the flocs can be promoted to fully adsorb suspended particles in sewage, and the precipitation performance of the flocs is remarkably improved; all links are smoothly linked, so that the efficient coordination of impurity removal, floc formation and precipitation is realized.

The filter of the present application can filter the suspended particles in the fluid in the treatment cabin when the garbage is stirred, so as to avoid burning the heating element when the fluid is heated subsequently; the filter is provided with a monitoring system, which mainly comprises a movable wall on the frame where the filter sponge is installed and a trigger linked with the movable wall, the movable wall can move between the first position and the second position, and the main body is provided with a sensor matched with the trigger; when the filter sponge is not installed, the movable wall automatically moves to the first position, so that the trigger cannot trigger the sensor, and the equipment does not work in the case that the filter sponge is not installed, so as to avoid burning the heating element.

The utility model discloses a sectional type simple three-phase separation device which comprises a cyclone separation section, an air flotation separation section, a static settling section and a filtering control section which are sequentially connected in series in the material flowing direction, and all the sections are fixed through flanges to form a closed tank body; an outlet of the cyclone separation section is connected to an inlet of the air flotation separation section through a pipeline; according to the cyclone separation section disclosed by the utility model, gas with relatively low density is quickly gathered and discharged from the top by utilizing high-speed rotational motion of the cyclone, and meanwhile, the gas content in liquid is reduced, so that the subsequent separation process is prevented from being interfered by the gas. The air flotation separation section releases tiny bubbles through a bubble generator, the bubbles are attached to the surfaces of oil drops, the density of the bubbles is reduced, the bubbles are accelerated to float to an oil collecting tank, and oil-water separation efficiency is improved. The static settling section controls the flow rate of liquid through an adjustable partition plate, so that fine oil drops and suspended particles are fully settled in a low-flow-rate environment, the impurity content is reduced, and it is ensured that the discharged water quality reaches the standard.

The invention discloses a tunnel advanced geological forecast device and system, the device comprises a mobile frame, a seismic wave detection sub-assembly, an electromagnetic wave detection assembly and an electric wheel, the electric wheel is assembled on the lower end face of the mobile frame, and the seismic wave detection sub-assembly and the electromagnetic wave detection assembly are respectively assembled on the left side and the right side of the upper end face of the mobile frame. A triangular push plate is assembled at the bottom of the movable frame, a transmission mechanism is assembled on the lower end face of the movable frame, and a water spraying mechanism is assembled on the upper end face of the movable frame. According to the tunnel advanced geology forecasting device and system, interference of air suspended particles on signal transmission of the electromagnetic wave detection assembly and the seismic wave detection sub-assembly is reduced, meanwhile, the design of the wide-mouth water spraying pipe expands the water mist coverage range, the visibility of the working environment is optimized, engineers can evaluate the rock stratum stability in real time, tunneling parameters are optimized, and the working efficiency is improved. And therefore, the safety and efficiency of tunnel construction are remarkably improved.

The invention discloses a processing method and system for a ship intelligent navigation scene, and relates to the technical field of ship intelligent navigation, and the method comprises the following steps: carrying out the continuous waveform analysis of an energy return path of a laser ranging link based on the sudden increase of the density of seawater suspended particles caused by the frontier of a storm, constructing a particle disturbance recognition zone, and carrying out the recognition of the particle disturbance; generating a disturbance identifier carrying an energy rebound mode characteristic according to an analysis result; and expanding the ranging pulse to a time domain by using the disturbance identifier, performing pulse form reconstruction on an energy abnormal section of the ranging pulse, so that the ranging pulse still keeps a stable main peak structure under the influence of energy rebound, and outputting a stable main peak waveform after pulse form reconstruction. According to the invention, through constructing a disturbance identification and form reconstruction mechanism, continuous restoration and smooth output of the distance measurement signals are realized, and the stability and anti-interference performance of distance sensing are improved; and through approaching artifact weakening and gradual change operation control, excessive operation is prevented, and stable course and avoidance safety of the ship in a storm environment are ensured.

The invention discloses a high-density solution titanium alloy product screening method, and belongs to the technical field of titanium alloy product screening. The method is based on the density difference sorting principle, batch screening is achieved through two times of screening, in the first time of screening, to-be-screened titanium alloy particles are added into a high-density base solution (composed of phosphoric acid, sodium phosphate and sodium carbonate) with the density being 1.65 g / cm < 3 >, and particles which sink to the bottom and are too large in density are removed; in the second screening, floating or suspending particles in the first screening are added into a solution with the density adjusted to be 1.48 g / cm < 3 >, and the particles which sink to the bottom or suspend are qualified products. The transparent characteristic of the high-density solution is utilized, observation is facilitated, one-by-one operation is not needed, large-scale screening can be achieved, efficiency is improved, labor intensity is reduced, large-scale production is adapted, the residual solution is removed through the stepped cleaning step after screening, a titanium phosphate film formed on the surface of the titanium alloy is protected, and product stability is ensured.

The invention discloses air flotation separation and carbon neutralization wastewater pretreatment integrated equipment, which relates to the technical field of wastewater treatment and comprises a buffer adjusting unit and a catalytic reaction unit which are communicated along the flow direction of wastewater. Through the synergistic effect of integrated buffer adjustment, two-stage air floatation and photocatalysis, the problem that nanoscale colloids are difficult to capture in a traditional air floatation process is effectively solved while the colloid redispersion phenomenon caused by wastewater pH fluctuation is overcome. Specifically, an acid-base environment of wastewater is stabilized through a buffer mechanism of an organic acid component, abnormal changes of charges on the surface of colloid are inhibited, full-scale capture of micron-scale suspended particles and nano-scale colloid is realized by combining dual effects of micron-scale bubble adsorption and reactive oxygen free radicals generated by electrolysis, and the colloid is deeply mineralized through photocatalysis, so that the adsorption efficiency of the colloid is improved. The colloid is effectively intercepted after being oxidized and destabilized, so that the risk that the colloid is re-dispersed due to fluctuation of environmental conditions in a subsequent process is avoided, and the interception effect of the nanoscale colloid in a wastewater pretreatment process is improved.

The invention discloses an in-situ measurement system for the particle size of suspended solids at the bottom layer of the sea, and the system comprises a light source, a frame structure, a support structure, a camera, a support adjustment module, an attitude sensor, an optical fiber, and a control module, and the control module is connected with the light source, the camera, the support adjustment module, and the attitude sensor through the optical fiber. The light source and the camera are placed in the frame structure through the support structure. The light source is used for generating strip-shaped light meeting preset requirements; the support adjusting module is used for adjusting the height and angle of the support structure so as to adjust the height and angle from the light source and the camera to the seabed. The attitude sensor is used for detecting the inclination angle of the frame structure placed on the seabed; the control module is used for receiving attitude information sent by the attitude sensor and an image sent by the camera, sending a control instruction and calculating the particle size of the ocean bottom layer suspended matter according to the image. The embodiment of the invention can measure the particle size of the marine bottom layer suspended matter. The method can be widely applied to the technical field of marine survey.

The utility model discloses a gas leakage detection alarm device for food production, and belongs to the technical field of gas detection. The fuel gas leakage detection alarm device for food production comprises a shell, an insulating shaft sleeve is arranged at the bottom of the shell and connected with the shell through internal threads, a sensing assembly is arranged in the insulating shaft sleeve, an integrally-formed signal connector is arranged at the top of the shell, and the signal connector is connected with the shell through an external thread. One end of the signal connector is provided with a wireless end. In order to solve the problems that a large number of gas pipeline structures are distributed in an existing food processing workshop, dust particles such as flour are mixed in air in the workshop due to the influence of the production environment, errors are easily generated when a traditional gas detection element is used for detecting the workshop environment, and an alarm is mistakenly touched. The dust filter seal at the front end of the collection air port can be matched with the filter element to filter suspended particles in the air, so that the particles can be prevented from entering the air cavity along with the air, and the detection precision is improved.

The utility model belongs to the technical field of pressure vessels, and particularly relates to an environment-friendly pressure vessel for chemical sewage treatment, which comprises a tank body and a top cover, electric push rods are symmetrically and fixedly connected to the top wall of the top cover, the driving ends of the electric push rods are fixedly connected with the outer wall of the tank body, and a forward and reverse motor is fixedly connected to the top of the tank body. The driving end of the forward and reverse motor is fixedly connected with a connecting rod, a treatment assembly is mounted in the tank body, and the treatment assembly comprises a plurality of annular filter screens and two mounting rings; sewage in the tank body is filtered through the filter screen, the activated carbon filter layer and the fiber membrane in sequence, suspended particles and fine wool fibers of the chemical sewage are intercepted by the filter screen, impurities in the sewage are further adsorbed and filtered by the activated carbon filter layer, and the sewage is filtered at high precision by the fiber membrane.

The utility model discloses an advanced treatment device for printing and dyeing wastewater, which comprises a coagulation treater, a sediment filter tank is arranged at the output end of the coagulation treater, a centrifugal separator is connected to the tail end of the sediment filter tank, an activated carbon filter tank is arranged at the tail end of the centrifugal separator, and a water outlet is formed in the tail end of the activated carbon filter tank. The tail end of the activated carbon filter box is connected with an ultrafiltration membrane filter, and the tail end of the ultrafiltration membrane filter is connected with a reverse osmosis membrane filter; according to the utility model, the procedures of coagulating sedimentation, precipitate separation, centrifugal separation of suspended particles, activated carbon filtration of fine substances, ultrafiltration membrane filtration and reverse osmosis filtration during sewage treatment can be realized in sequence, and the treatment effect on printing and dyeing sewage is good.