182results about How to "Improve precipitation effect" patented technology

The invention belongs to the technical field of sewage treatment, and particularly relates to sewage treatment equipment for indigo blue production and a treatment method.The sewage treatment equipment comprises a sewage treatment box, a sewage outlet is formed in the bottom in the sewage treatment box, a rotating shaft is rotationally connected to the middle of the bottom in the sewage treatment box, and a driving motor is fixedly arranged at the top of the rotating shaft; a rotating rod is fixedly connected to the surface of the rotating shaft, a first cleaning plate is fixedly connected to the bottom of the rotating rod, and a cleaning assembly is arranged in the sewage treatment box and comprises a guide block; through rotation of a rotating shaft, a sliding block is driven to move up and down under the action of a guide groove and a guide column, when the sliding block is reset, a first guide rod abuts against a U-shaped block, two second cleaning plates are driven to clean all the first cleaning plates under the action of a U-shaped connecting block, and then flocculates hung on the surfaces of the first cleaning plates are scraped off; and the problem that the rotating speed of the first cleaning plate is reduced during working is solved, and the cleaning efficiency and the precipitation effect are improved.

The utility model relates to the technical field of foundation pit dewatering, and discloses a foundation pit dewatering device which comprises a water collecting well arranged at the bottom of a foundation pit body. The dewatering mechanism is arranged in the water collecting well and is matched with the filter material layer laid in the water collecting well; the dewatering mechanism is arranged, a first filter cartridge and a second filter cartridge are matched to filter sludge in a water collecting well, the dewatering effect of the device is improved, a mounting block drives a cleaning rod to clean sludge and impurities on the outer wall of the second filter cartridge and the inner wall of the first filter cartridge, water flow can be rapidly discharged, and the dewatering effect of the device is improved. A cleaning plate and a compression spring are matched to clean impurities blocked on the first filter cartridge, a motor drives two gears to be matched to enable a cleaning rod to rotate to clean the filter cartridge, and sludge and impurities blocked on the filter cartridge can be cleaned; the problem that according to an existing foundation pit dewatering device, sludge on a filter cartridge is inconvenient to clean is solved.

The invention provides a culture tail water treatment system and method based on a constructed wetland purification technology, and relates to the field of culture tail water treatment.The culture tail water treatment system comprises a foundation, a culture pond is arranged on one side of the foundation, a protection assembly is inserted into the inner bottom wall of the culture pond, and a first water suction pump is fixedly connected into the protection assembly; a sedimentation tank is arranged at one end of the first water suction pump, a blocking assembly is fixedly connected to the inner bottom wall of the sedimentation tank, a second water suction pump is arranged on the other side of the interior of the sedimentation tank, and a water distribution assembly is fixedly connected to one end of the second water suction pump. According to the sewage treatment device, through the arrangement of the block assembly, a first inclined plate blocks sediments in the sedimentation tank for the first time, a second inclined plate blocks the sediments again, so that the sediments are accumulated at the bottom of the sedimentation tank, and a blocking net blocks and filters suspended solids in sewage, so that the sediments and the suspended solids are prevented from being sucked up by a second water suction pump; the precipitation effect is improved; and blockage of subsequent pipelines is avoided.

The invention relates to an electrochemical iron enhanced wastewater anaerobic treatment process and a device and a method for in-situ purification of biogas. According to the method, an iron electrode is used as an anode, an electrochemical method is adopted for strengthening a wastewater anaerobic treatment process and a biogas in-situ purification process, pollutants such as organic matters in to-be-treated wastewater are degraded by microorganisms in an anaerobic reactor, treated wastewater is obtained, biogas is generated, and main components of the biogas are CH4, CO2, H2S and other impurities; in the electrochemical reaction with the iron electrode as the anode, Fe < 2 + > is generated in situ at the anode, H2 and OH <-> are synchronously generated in situ at the cathode, CO2 and H2S in biogas generated by wastewater anaerobic treatment react with electrochemical reaction products to generate precipitates or generate CH4 to be removed in situ, and meanwhile, the wastewater anaerobic treatment effect is effectively improved. The method is simple, convenient, efficient, short in process, few in equipment, low in investment and operation cost and convenient to operate and maintain.

The invention discloses a treatment method of fluorine-containing wastewater. The treatment method comprises the following steps: S1, adding acid to reduce the pH value of the wastewater to 1-2 before the wastewater enters a reaction tank; after the wastewater enters the reaction tank, lime milk is added into the reaction tank until the pH value of the wastewater reaches 12; s2, the supernate in the reaction tank overflows to a first flocculation tank, a PAM solution is added into the first flocculation tank, the supernate in the first flocculation tank overflows to a coagulation tank, acid is added into the coagulation tank to adjust the pH to 6.4-7.2, and then a PAC solution is added; s3, enabling the supernate in the coagulation tank to overflow to a second flocculation tank, adding the rest PAM into the second flocculation tank, and enabling the supernate to overflow to a sedimentation tank for sedimentation after the addition is finished. After the wastewater is treated by the treatment method disclosed by the invention, the fluorine ions in the wastewater can be finally reduced to be less than 15mg / L, and the process effects of two-stage chemical precipitation and coagulating sedimentation in the traditional method are achieved.

The invention discloses a method for realizing long-acting stable shortcut nitrification and denitrification phosphorus removal based on sludge sidestream treatment, and belongs to the field of biological sewage treatment. After the short-cut nitrification process, the denitrification process, the phosphorus removal process and the carbon removal process of sewage in the reactor are completed, activated sludge is divided into three directions, one part of the activated sludge is discharged to maintain the sludge age, the other part of the activated sludge continues to be subjected to the nitrogen and phosphorus removal process in the reactor, and a small part of the sludge with excellent denitrification and phosphorus removal performance is reserved to flow back to an independent storage pool. In the later period of operation, after the cell activity in the activated sludge is damaged due to accumulation of high-concentration nitrite nitrogen, the activated sludge retained in the early stage flows back to the reactor, so that the denitrifying phosphorus removal performance of the sludge is enhanced, and efficient and stable nitrogen and phosphorus removal is realized. The method realizes synchronous deep removal of nitrogen and phosphorus in sewage, is suitable for automatic operation, and is convenient for realizing accurate control and optimal management of the process.

The invention provides a modular integrated water purification device. The modular integrated water purification device comprises a flocculation basin body and a stirring device mounted in the flocculation basin, the stirring device comprises a driving part, a transmission shaft and a stirring assembly, and the driving part is fixed to the top end of the flocculation tank body and connected with the top end of the transmission shaft; the stirring assembly is mounted on the transmission shaft; the stirring assembly comprises a cross beam group, an inner ring group, a middle ring group and an outer ring group; the cross beam group is fixedly connected with the transmission shaft; the inner ring group, the middle ring group and the outer ring group are concentrically arranged outside the transmission shaft and are sequentially arranged on the cross beam group from inside to outside; a plurality of inner blades are arranged on the inner ring set at intervals in the circumferential direction, a plurality of middle blades are arranged on the middle ring set at intervals in the circumferential direction, and a plurality of outer blades are arranged on the outer ring set at intervals in the circumferential direction. The inner blades and the middle blades are arranged in a staggered mode in the circumferential direction, and the middle blades and the outer blades are arranged in a staggered mode in the circumferential direction. According to the modularized integrated water purifying device provided by the invention, the flocculation effect in the flocculation basin is improved, and the subsequent sedimentation treatment effect is improved.

The utility model discloses a dosing rapid dissolving and mixing water bucket for a water plant, belongs to the technical field of water treatment equipment, and solves the problems of high cost and insufficient mixing of a bucket type container for water and medicine mixing in the prior art. A precipitation mechanism is arranged in the mixing water bucket, a top cover is connected to the top of the mixing water bucket and the top of the precipitation mechanism, a medicine inlet is formed in the top cover, a filter screen, a slag collecting screen and a flocculation stop block are installed in the mixing water bucket, and a flow guide cone is installed at the bottom in the mixing water bucket; drain outlets are respectively formed in the bottoms of the outer walls of the mixing water bucket and the precipitation mechanism, a tangent water inlet and a tangent backflow water inlet are respectively formed in the outer wall of the mixing water bucket, and an overflow port and a medicine outlet are further formed in the outer wall of the precipitation mechanism. The mixing device is used for mixing medicine powder and water in medicine adding equipment in a water production plant, and has the characteristics of uniform and sufficient mixing and energy conservation.

The utility model discloses an aquaculture wastewater up-to-standard discharge treatment device which comprises a sludge storage tank, a solid-liquid separator, a stock solution tank, a regulating tank and an integrated aquaculture wastewater treatment device, the integrated culture wastewater treatment device comprises an up-flow anaerobic granular sludge treatment unit, an activated sludge treatment unit, a short-cut nitrification-anaerobic ammonia oxidation treatment unit and a contact oxidation treatment unit, wherein the short-cut nitrification-anaerobic ammonia oxidation treatment unit improves the sludge activity by forming hydroxyapatite carrier type anaerobic ammonia oxidation granular sludge, and realizes synchronous nitrogen removal and phosphorus recovery. The inclined tube assemblies and the hollow folded plate type precipitators are arranged in the units of the integrated treatment device, so that the precipitation water conservancy condition is improved, the precipitation effect is improved, and the effluent can meet the discharge standard of pollutants in the livestock and poultry industry. The integrated device has the advantages of compact structure, small occupied area, small aeration rate, low sludge yield and synchronous low-carbon nitrogen removal and phosphorus resource recovery.

The invention belongs to the technical field of sewage treatment, particularly relates to a water conservancy construction sewage treatment device, and provides the following scheme aiming at the problems that an existing sewage treatment device is poor in sewage treatment effect, a traditional filter screen is inconvenient to clean, a water purification agent cannot be uniformly added into sewage, and the treatment effect is poor. The sewage treatment device comprises a filter cylinder used for temporarily storing and filtering sewage, and four supporting legs are arranged at the bottom of the filter cylinder; the water flow power mechanism is arranged at the top of the filtering cylinder, is communicated with the filtering cylinder and is used for guiding sewage into the filtering cylinder and providing rotating power. According to the sewage treatment device, the circular filtering structure is adopted, sewage can be filtered, the impact power effect of the sewage is utilized, the circular filtering structure can be automatically cleaned, alum can be automatically put for sewage precipitation, and the precipitation effect on the sewage can be improved by uniformly putting the alum.

The invention belongs to the technical field of sewage and waste treatment, and discloses a method for efficiently removing thallium from an acid solution containing thallium sulfate. The method comprises the following steps: adding a coordination agent and a complex salt into water to prepare a precursor solution, adding the precursor solution into an acidic solution containing thallium sulfate, stirring, and then adding metal reducing powder to react for a period of time to obtain precipitate particles, namely thallium alloy; the complex salt is any one or more than two of complexes containing lead, bismuth and tin. According to the method, introduced lead, bismuth and tin metal ions are subjected to coordination transformation, so that sulfate precipitates are not immediately generated after the metal ions enter a solution containing sulfate radicals, and slow-release dissociation reaction and reduction eutectoid reaction are generated, so that the effective utilization rate of the introduced ions is increased, and the reagent consumption is greatly reduced. And through cooperation of the precursor solution and the metal reduction powder, the precipitation effect of thallium in the acid waste liquid is enhanced, deep thallium removal is achieved, and the thallium removal rate is greatly increased.

The invention relates to the technical field of printing and dyeing wastewater treatment, and discloses a printing and dyeing wastewater treatment device with a multi-stage separation function, which comprises a sedimentation tank, an auxiliary separation assembly arranged at the top of the sedimentation tank and used for assisting in sedimentation of printing and dyeing wastewater, and an amplitude adjusting assembly arranged above the sedimentation tank and used for adjusting the sliding amplitude of the auxiliary separation assembly, an anti-blocking assembly used for guaranteeing smooth drainage is arranged in the sedimentation tank, through the arrangement of an auxiliary separation assembly and an amplitude adjusting assembly, continuous flapping action can be achieved, regular physical disturbance is generated in wastewater, pollutant particles can be better gathered and precipitated in the printing and dyeing wastewater, and through the continuous physical disturbance, the pollutant particles can be effectively separated from the sedimentation tank. According to the device, pollutants in the printing and dyeing wastewater can be settled in a short time, so that compared with a traditional settling pond, the settling efficiency is greatly improved, the retention time of the wastewater in the settling pond is shortened, and the treatment capacity of a whole printing and dyeing wastewater treatment system is improved.

The invention discloses waste water recycling equipment for corrugated board production, and relates to the technical field of waste water treatment.The waste water recycling equipment comprises a settling box, a water outlet pipe is fixedly connected to one side of the settling box, a water inlet pipe is fixedly connected to the side, away from the water outlet pipe, of the settling box, and sliding grooves are symmetrically formed in the upper end face of the settling box; the liquid collecting box can be driven to move intermittently and equidistantly on the upper end face of the settling box, a flocculating agent in the liquid collecting box is uniformly sprayed on wastewater in the settling box, the flocculating agent can be uniformly sprayed to all corners of the settling box, and the problem that the local concentration is too high or too low due to direct feeding through a traditional single inlet is solved; the uniform distribution enables the flocculation reaction in the wastewater to be more consistent, and the obvious difference of flocculation effects among different areas is reduced, so that floating matters and suspended matters in the wastewater are more effectively removed, the overall efficiency of wastewater treatment is improved, the quality of the treated wastewater is improved, and the wastewater is more in line with environmental protection standards and subsequent treatment requirements.

The invention provides a sewage treatment process with multiple operation modes and a sewage treatment system, and belongs to the technical field of sewage treatment. Comprising a first reaction zone, a second reaction zone and a third reaction zone which are used for sewage denitrification and / or dephosphorization and are carried out in sequence, and nitrification liquid treated in the third reaction zone flows back to the first reaction zone; switching among a dephosphorization priority mode, a dephosphorization and denitrification balance mode or a denitrification priority mode is carried out by controlling a nitrification liquid reflux ratio to adjust ORP (oxidation reduction potential) and / or DO (dissolved oxygen) of the first reaction zone. According to the sewage treatment process with the multiple operation modes, different operation modes can be flexibly adjusted and switched in the same sewage treatment system according to different incoming water qualities, extremely high biological denitrification and / or biological phosphorus removal efficiency can be obtained by controlling the reflux ratio of nitrification liquid to adjust ORP and / or DO, and the investment and treatment cost can also be greatly reduced.

The invention provides an integrated water purifying device which comprises a water inlet pipe and a base, the right side of the water inlet pipe is fixedly communicated with a sedimentation tank, the bottom of the sedimentation tank is fixedly connected with the top of the base, and the right side of the sedimentation tank is fixedly communicated with a filter; the back side of the filter is fixedly communicated with a backwashing device, the right side of the filter is fixedly communicated with disinfection equipment, and the bottom of the disinfection equipment is fixedly connected with the top of the base; the top of the water inlet pipe fixedly communicates with a quantitative structure, the front side of the quantitative structure is fixedly connected with a dispersing structure, and the dispersing structure is located on the right side in the water inlet pipe; a sealing structure is arranged at the bottom in the sedimentation tank. By arranging the water inlet pipe, the base, the sedimentation tank, the filter, the backwashing device, the disinfection equipment, the quantitative structure, the dispersion structure, the sealing structure and the linkage structure, the problems that a coagulant is inconvenient to add and sludge in the sedimentation tank is tedious to treat in an existing integrated water purification device are solved.

The invention discloses a printed circuit board wastewater comprehensive treatment method, and belongs to the technical field of wastewater treatment.The comprehensive treatment method comprises the steps that nickel-containing wastewater and cyanide-containing wastewater are treated in a combined mode, complex wastewater and silver-containing wastewater are treated in a combined mode, and then the wastewater is mixed with organic wastewater for biochemical treatment. According to the comprehensive treatment method, the process of quality-divided treatment of various types of wastewater is simplified, the overall treatment time is shortened, the acid-base property of water is utilized, the consumption of acid-base agents is reduced, and the cost is reduced. Ultraviolet and ozone bubbling conditions are utilized to perform complex breaking oxidation, cyanide is utilized to oxidize to form carbonate, and precipitation is promoted to remove metal ions; ferric chloride is added for complex breaking treatment under ultraviolet and air aeration conditions, so that the consumption of ferric iron is reduced, silver and copper are efficiently removed, the quality of comprehensively treated effluent reaches the standard, and the treatment process is efficient and rapid.

The utility model provides a secondary sedimentation tank system and belongs to the technical field of sewage treatment. The secondary sedimentation tank system comprises a water distribution area and a sedimentation area, the water distribution area and the sedimentation area are sequentially connected in the water flow direction, the water distribution area comprises a water distribution channel, the sedimentation area comprises a sedimentation tank, a water distribution wall is arranged between the water distribution channel and the sedimentation tank, water distribution holes are formed in the water distribution wall, a sludge hopper area is arranged on the lower portion of the sedimentation tank, and the sludge hopper area comprises a sludge hopper. Each sludge hopper is in a three-dimensional isosceles trapezoid shape with a wide upper part and a narrow lower part, the included angle between the inclined plane of the side edge of each sludge hopper and the horizontal plane is 55-60 degrees, the sludge hoppers are arranged in rows along the width direction and the length direction of the sedimentation tank and are fully distributed at the bottom of the tank, each sludge hopper is provided with a sludge discharge pipe, and each sludge discharge pipe is provided with a sludge discharge control valve; and each sludge discharge control valve is electrically connected with the PLC control system. The secondary sedimentation tank system disclosed by the utility model is wide in application range, good sedimentation effect can be guaranteed, and construction investment can be saved.

The invention discloses a nickel-titanium alloy material and a preparation method and application thereof. The nickel-titanium alloy material comprises a nickel-titanium alloy body and a TiN-containing coating arranged on the surface of the body, wherein the coating is prepared by adopting a high-power pulse magnetron sputtering technology. The TiN-containing coating in the nickel-titanium alloy material is prepared through the HiPIMS technology, the obtained coating material has the remarkable characteristic of high compactness, and when the coating material is used for an implant material, the nickel element precipitation prevention effect is good. Meanwhile, the nickel-titanium alloy material has the advantages of high corrosion resistance, high binding force, low stress and the like, can be used in (non) implantable medical devices with high corrosion resistance and high compact protection requirements, and is good in application prospect.

The invention discloses an active precipitation monitoring construction method for strong and weak permeable interbedding stratums. The method comprises the following steps that 1, a designed precipitation implementation scheme is input to a precipitation control platform to form a precipitation target; secondly, a plurality of water content measuring holes are formed in the trend of the foundation pit at intervals, an automatic water content measuring system is installed, and water content measuring data of the automatic water content measuring system are wirelessly transmitted to a precipitation control platform; thirdly, a dewatering well is dug in the inner side of the foundation pit, and an active dewatering system is installed; fourthly, observation wells are dug in the outer side of the foundation pit in the trend of the foundation pit according to the set intervals, automatic water level gauges are arranged in the observation wells, and water level data of the observation wells are wirelessly transmitted to the precipitation control platform; and 5, the rainfall control platform monitors and obtains moisture content data and underground water level data in real time, and controls the active rainfall system to actively rainfall into the rainfall target. According to the invention, real-time automatic monitoring and active precipitation control are carried out by monitoring a plurality of parameters, and the precipitation effect and the precipitation accuracy are improved.

The application discloses a lateral flow fishbone-shaped inclined plate assembly and an inclined plate sedimentation tank. The inclined plate assembly comprises a fishbone support, an inclined plate connecting piece and an inclined plate. The inclined plate is in the form of a flat plate. The mounting portion of the inclined plate connecting piece is in the form of a long and thin plate and is arranged in an inclined manner. The upper end of the inclined plate is mounted on the mounting portion. An extension portion is arranged on the lower side of the mounting portion. A washing assembly for washing the inclined plate is mounted on the lower end of the extension portion. The fishbone support is arranged in a vertical arrangement. A plurality of pairs of inclined plate connecting pieces are arranged along the length direction of the fishbone support. Each pair of inclined plate connecting pieces is oppositely arranged on the two sides of the fishbone support. Each pair of inclined plate connecting pieces is connected with the fishbone support through the connecting portion thereof. The lower end of the mounting portion is inclined towards the direction away from the fishbone support. The application adopts a unique inclined plate structure and a fishbone-shaped inclined plate assembly, and is provided with a washing assembly for effectively washing the inclined plate. The application effectively increases the allowable length of the inclined plate while ensuring the structural stability of the inclined plate assembly and the inclined plate module, reduces the maintenance interval, and improves the sedimentation effect.

A device for recycling gallium from a sodium aluminate solution comprises a vertically-extending filling cylinder, a first four-way valve, a second four-way valve, a neutralizing tank, a precipitation tank and a dissolving tank, the filling cylinder is filled with a plurality of chelating resin particles, a first connector of the first four-way valve is connected to a base and communicated with the filling cylinder, a first connector of the second four-way valve is connected to a top cover, and a second connector of the second four-way valve is connected to a bottom cover and communicated with the top cover. A fourth connector of the second four-way valve supplies materials to the neutralizing tank through a first pipeline, a first liquid inlet is formed in the top of the neutralizing tank and used for being connected with an alkali liquor source, the neutralizing tank supplies materials to the precipitation tank through a second pipeline, and a second liquid inlet is formed in the top of the precipitation tank and used for being connected with an alkali liquor source. The precipitation tank supplies materials to the dissolving tank through a third pipeline, and a third liquid inlet is formed in the top of the dissolving tank and used for being connected with an alkali liquor source. The device is simple in structure and convenient to operate, the gallium element can be recycled at low cost by utilizing a Bayer process matching device, and the utilization value of bauxite is effectively improved.

The utility model discloses an integrated high-efficiency sedimentation tank which comprises a coagulation tank, a flocculation tank, a plug flow area and a sedimentation tank which are communicated in sequence, a first stirrer is arranged in the coagulating basin, and is provided with a first dosing assembly; a second stirrer and a guide cylinder are arranged in the flocculation tank, the guide cylinder is vertically arranged, the second stirrer is arranged in the guide cylinder, and the second stirrer is provided with a second dosing assembly; a communicating pipe is arranged in the flocculation basin; one end of the communicating pipe is connected with the lower part of the side wall of the coagulating basin, and the other end of the communicating pipe extends into the guide cylinder and is arranged below the second stirrer; and the coagulating basin is communicated with the flocculating basin through a communicating pipe. According to the technical scheme, a medicament and sewage are fully mixed, the flocculation effect is good, the sludge concentration is high, the precipitation effect is improved, the precipitation time is shortened, and the effluent quality is improved.

This invention relates to the field of wastewater treatment, specifically a wastewater treatment device, including an electrolytic cell with an electrolysis assembly installed on it; it also includes a centrifugal sedimentation mechanism and a reciprocating stirring mechanism, which cooperate with each other; the centrifugal sedimentation mechanism includes a centrifuge cylinder with a turbine installed on it, and a rotation drive assembly installed on the bottom outer wall of the electrolytic cell; the reciprocating stirring mechanism includes a connecting frame with several rotating tubes connected to it, the bottom of which is connected to a stirring rod via a mounting base; a drive gear placed on the rotating tubes; and a rack and pinion reciprocating frame meshing with the drive gear. This invention utilizes the centrifugal sedimentation mechanism and the reciprocating stirring mechanism to achieve rapid sedimentation of impurities in wastewater, and the precipitated wastewater solution is discharged into the electrolytic cell through the top opening of the centrifuge cylinder for electrolytic sedimentation, thus facilitating rapid sedimentation of wastewater.

The invention relates to the technical field of wastewater treatment, in particular to a movable electrolytic copper foil wastewater treatment device which comprises a shell and movable frames symmetrically mounted at the lower end of the shell, a plurality of conical shells are fixedly mounted at the bottom end of the shell in a penetrating manner, and rubber rings are fixedly connected to the upper ends of the conical shells. When a plurality of copper foils with different processes exist in a workshop for electrolytic production, even if the components of the electrolytic copper foil wastewater generated in each region are different, the electrolytic copper foil wastewater in the plurality of regions can be sequentially and independently treated under the condition that a plurality of purification treatment tanks do not need to be arranged; the electrolytic copper foil wastewater treatment device has the advantages that the electrolytic copper foil wastewater treatment device is simple in structure and convenient to use, influence confusion cannot be caused among electrolytic copper foil wastewater at each position, precipitates left after treatment of the electrolytic copper foil wastewater at each position can be independently stored, follow-up centralized treatment is facilitated, cost is reduced, the weight of the whole device cannot be excessively increased, and moving convenience is facilitated.

The invention discloses a face recognition device based on building construction, and particularly relates to the field of face recognition devices.The face recognition device comprises a box body, an inner cavity of the box body is divided into a water storage cavity and an equipment cavity through a partition plate, the equipment cavity is formed in the top of the water storage cavity, and a flow stabilizing plate and a filtering plate are arranged in the middle of the water storage cavity of the box body. According to the face recognition device, the rotating box can be controlled to rotate up and down and rotate horizontally by starting the first stepping motor and the second stepping motor, the shooting angle and direction of the face recognition lens can be adjusted, and the face recognition device can be conveniently adapted to workers at different positions and with different heights for face recognition; when the lens needs to be cleaned, the supporting rod can be automatically controlled to rotate, the sponge wiper wipes and cleans the lens, a worker can conveniently wipe and clean the face through the paper roll, the water pump is started to spray out liquid through the water pipe, cleaning water is conveniently provided for cleaning the face of the worker, and the face recognition effect is improved.

The utility model discloses a degassing device and a sedimentation tank thereof, and belongs to the technical field of sewage treatment.The degassing device comprises a top layer degassing structure and a bottom layer degassing structure which are arranged in a layered mode, the top layer degassing structure comprises a top layer gas-collecting hood and a top layer exhaust pipe arranged at the top of the top layer gas-collecting hood, and the bottom layer degassing structure comprises a bottom layer exhaust pipe arranged at the bottom of the bottom layer gas-collecting hood. The bottom-layer degassing structure comprises a bottom-layer gas-collecting hood and a bottom-layer exhaust pipe arranged at the top of the bottom-layer gas-collecting hood, an exhaust port of the top-layer exhaust pipe and an exhaust port of the bottom-layer exhaust pipe are both higher than the sewage liquid level, and the top-layer gas-collecting hood is located above the bottom-layer gas-collecting hood; and the top-layer gas-collecting hoods and the bottom-layer gas-collecting hoods are arranged in a staggered manner in the horizontal direction. According to the utility model, the top-layer degassing structure and the bottom-layer degassing structure are arranged in a layered manner, and the top-layer gas collecting hoods and the bottom-layer gas collecting hoods are arranged in a staggered manner in the horizontal direction, so that multi-stage degassing of sewage can be realized, the degassing effect is improved, and the precipitation effect is further improved.

The application relates to the technical field of industrial sewage treatment equipment, and particularly discloses an integrated intelligent heavy medium feeding and efficient sludge concentration system, which comprises a sewage treatment unit, a heavy medium circulation unit and a sludge-water treatment unit. The heavy medium circulation unit comprises a sludge pumping pipe, the sludge pumping pipe is arranged in the inside of a sludge discharge groove, one side of the sludge pumping pipe is fixedly connected with a pump, and one side of a liquid outlet of the pump is fixedly connected with a hydraulic heavy medium separator. In the scheme, the hydraulic heavy medium separator is coupled with the sludge-water treatment unit with an internally-arranged flexible flat plate dewatering membrane to form a closed loop structure of 'heavy medium recovery-overflow sludge-water forced pre-concentration', the overflow sludge-water with a high water content of 99.2% to 99.6% in the traditional process is concentrated by using the anti-pollution and unbroken wire membrane assembly for physical interception, the sludge volume is reduced by more than 60%, and the industry pain points of large sludge quantity and high rear-end dewatering load in the traditional process are solved.

The rapid precipitation device mainly comprises a funnel-shaped shell, an auxiliary precipitation funnel arranged in the funnel-shaped shell, a top cover, a sewage inlet, a purified water outlet, a first sludge collection box and a second sludge collection box, a gradually-expanded annular flow path of which the area is gradually increased from top to bottom is formed between the outer surface of the auxiliary precipitation funnel and the inner surface of the funnel-shaped shell; a plurality of layers of annular guide plates which are parallel up and down and have the same width are arranged on the inner surface of the auxiliary precipitation funnel; an auxiliary suspended matter precipitation part with a hollow structure is downwards arranged at the center of the top of the auxiliary precipitation funnel; the auxiliary suspended matter precipitation part is further positioned in an inner ring of the annular guide plate and is spaced from the annular guide plate; the device is simple in structure, small in size and light; and precipitation components with various structures are also adopted to carry out multi-stage continuous treatment on sewage with different concentrations, so that more comprehensive sewage precipitation is ensured.

The invention relates to the technical field of resin detection, in particular to a method for detecting trace metal ions in PTFE (polytetrafluoroethylene) resin, which comprises the following steps: S1, dispersing cleaned PTFE resin in a mixed solution of an alcohol organic matter and acidic pure water, sealing, and extracting in a shaking table to obtain an intermediate solution; s2, centrifuging the intermediate solution obtained in the step S1, standing for layering, then taking out supernate, respectively putting the supernate and a blank sample into a nitrogen blowing concentrator, concentrating until the supernate and the blank sample are dried, adding acidic pure water, dissolving, and diluting to obtain a to-be-detected sample solution; s3, preparing a metal ion standard solution, establishing a standard curve, and determining the concentration of metal ions in the sample solution by using ICP-MS; by optimizing the extraction solvent of trace metal ions and cooperating with shaking table oscillation, the treatment efficiency of the sample before ICP-MS detection is remarkably improved, so that the detection efficiency of the PTFE resin is greatly improved.

The invention discloses a multifunctional sedimentation tank based on a different-wave folded plate and an operation method thereof.The device comprises a sedimentation tank body, the sedimentation tank body is divided into an upper-layer tank body and a lower-layer tank body through a middle transverse partition plate, the lower-layer tank body is provided with an accident tank unit, and a left side chamber of the upper-layer tank body is a main sludge discharge channel; a water inlet unit, a folded plate precipitation unit and a water outlet unit are sequentially arranged in the right side chamber from front to back; a scum main tank and a water inlet main channel flushing tank are arranged on the outer wall of the right side chamber at intervals up and down; a water outlet of the water inlet unit is connected with a water inlet of the folded plate sedimentation unit, a water outlet of the folded plate sedimentation unit is connected with the water outlet unit, the water inlet unit is connected with the accident pool unit, and the water outlet unit is respectively connected with a sludge discharge main channel, a scum main tank and a water inlet main channel flushing tank. A water outlet of the water inlet main canal flushing tank is connected with a cleaning water inlet of the water inlet unit, and a cleaning water outlet of the water inlet unit is connected with the sludge discharge main canal; by adopting the device and the method, the precipitation efficiency is greatly improved, and switching operation of various working conditions is met.