298results about How to "Guaranteed removal effect" patented technology

A machining device based on a non-Newtonian fluid shear thickening mechanism polishing method comprises a workbench, a polishing tool system, an abrasive fluid circulation device and a computer control module, wherein the polishing tool system is installed on a portal frame of the workbench, an inlet of the abrasive fluid circulation device is communicated with an abrasive backflow opening in the workbench, and the workbench, the polishing tool system and the abrasive fluid circulation device are respectively connected with the computer control module. The machining device has the advantages that the application range is wide, the size of machined workpieces is not limited, the structure of the device is simple, the device is controlled easily, a computer controls the operation track of the device, the polishing process of non-Newtonian fluid abrasive fluid and the surfaces of the workpieces can be controlled effectively, a non-Newtonian fluid abrasive fluid circulation system is adopted, and the functions of removing abrasive dust, purifying, recycling, transporting and storing the abrasive fluid, and adjusting performance are achieved.

The invention belongs to a double-reflux denitrification membrane-bioreactor (MBR) process for treating dry acrylic fiber waste water, mainly aiming at treatment of high organic nitrogen with denitrification requirement and petrified dry acrylic fiber waste water which is difficult to degrade. The process comprises the following steps: feeding petrified dimethylformamide (DMF) dry acrylic fiber waste water into a front anoxic pool 2 from a water inlet 1, converting partial organic nitrogen into ammonia nitrogen under the anoxic condition, carrying out denitrification on a nitration liquid 10 refluxing to the front anoxic tank 2 by fully utilizing a waste water carbon source, and simultaneously compensating basicity 3 to the waste water; and then feeding entering the waste water into an aerobic pool 4, carrying out organism aerobic oxidation, organic nitrogen aerobic oxidation and ammonia nitrogen nitration under the abundant basicity, wherein the effluent contains a large amount of nitrates; refluxing the partial effluent to the front anoxic pool 2 for denitrification, and feeding the other effluent into a membrane separation pool 7; carrying out denitrification by utilizing an additionally arranged carbon source; and sucking with a micro-filter membrane assembly 8 so as to generate effluent 9, and refluxing a sludge concentrated liquid 11 to the front anoxic pool 2. The process is high in nitrogen removal efficiency.

The invention discloses a heating control method of an electric rice cooker. The electric rice cooker comprises a cooker body and a cover. The cover is provided with an internal steam passage and a negative pressure generator disposed in the steam passage. A heater is disposed in the cooker body. The heating control method includes the steps of a, heating, namely controlling the heater to heat with a first heating power P1, and stopping the negative pressure generator until a steam temperature Tt of the cover is not smaller than a first preset temperature T1; b, boiling, namely controlling the heater to heat with a second heating power P2, running the negative pressure generator until a cooker bottom temperature Tb of the bottom of the cooker body is not smaller than a second preset temperature T2. T2 is larger than T1. The heating control method has the advantages that cooking speed can be increased and bubble overflow prevention can be improved for the electric rice cooker. The invention further discloses the electric rice cooker.

The invention discloses a microbial agent for purifying sanitary sewage and a preparation method of the microbial agent. Active ingredients of the microbial agent is formed by mixing the following raw material bacteria including thiobacillus denitrificans, bacillus subtillis, bacillus licheniformis, bacillus polymyxa, lactic acid bacteria, nocardia amarae, denitrifying bacteria, rhodopseudomonas palustris, thiophilic red pseudomonas, rhodospirillum, saccharomycetes and propionibacterium. By means of the microbial agent, cellulose, saccharides, fat protein, pathogenic bacteria, viruses and parasitic ovum in sanitary sewage and pollutants, such as inorganic salt which is high in the contents of nitrogen, sulphur and phosphorus, the BOD and COD removal effect is guaranteed, meanwhile good bactericidal ability is achieved, high inhibiting ability is achieved especially for pathogenic bacteria, and the effect of treating sanitary sewage is remarkable.

The invention discloses a method for preparing high purity graphite from graphite with higher purity, which comprises the following steps of: firstly, melting graphite with 99.9% of carbon content by using superior pure sodium hydroxide; then, treating by using superior pure mixed acid. The carbon content of the finally obtained high purity graphite reaches more than 99.98%.

The invention relates to a continuous pyrolysis incineration device for full-scale electronic and electrical product waste. The continuous pyrolysis incineration device structurally comprises a feeder, a pulley feed hopper, a pyrolysis gasifier, a pyrolysis gas flue, a combustion furnace, a G-L air heat exchanger, a quenching absorption tower, a bypass flue, a chimney exhaust port, a cat ladder, an activated carbon storage tank and a chimney. The continuous pyrolysis incineration device has the advantages that dangerous electronic and electrical product waste, medical waste, organic waste and other kinds of dangerous combustible solid waste with a certain heat value are treated through a pyrolysis incineration technology, pyrolysis and high-temperature incineration technologies are combined in an optimized mode, low-temperature gas and high-temperature melt are combined together, waste incineration is conducted in the steps of pyrolysis, premixing and incineration, the synthetic technological process and technological conditions of pyrolysis incineration, energy recovery and flue gas cleaning are achieved and have perspectiveness, the overall technology has the outstanding harmless characteristic, compatibility and resourcezation are remarkable, material applicability is high, no hazardous reaction medium or poisonous and harmful solvent is involved in the process, and nature greenization can be achieved.

The invention discloses a method for treating and recycling wastewater produced by coal middle-low temperature dry distillation. The method comprises the steps of pretreatment, biochemical treatment as well as advanced treatment and recycling. The method concretely comprises the following steps: firstly, carrying out oil removal on the wastewater by means of gravity, filtering and then deacidifying and deaminizing by means of steam stripping; dephenolizing by means of extraction, and removing emulsified oil and suspended solids by means of flocculation-air flotation; reducing chemical oxygen demand (COD) by means of electrochemical oxidation, and then carrying out biochemical treatment including anaerobic treatment, anoxic treatment and aerobic treatment; finally, carrying out advanced treatment and recycling, i.e., coagulation treatment, ozone catalytic oxidation treatment, membrane bioreactor (MBR) treatment, reverse osmosis treatment, and recycling the effluent which reaches the standard. By adopting reasonable optimized combination configuration of all units, the high efficiency recovery of tar, ammonia and phenol in the wastewater as well as the advanced treatment of the wastewater produced by middle-low temperature dry distillation can be realized, and the wastewater is finally recycled by means of desalination, so that pollutant removal and water resource recycling are realized.

The invention discloses a preparation method of high-purity diglyceride, which comprises the following steps: 1) under the catalytic action of partial glyceride lipase, reacting a fatty acid donor and glycerol to synthesize a mixture containing diglyceride and monoglyceride, performing centrifugal separation on the mixture, and recovering the supernatant oil phase; 2) under the catalytic action of monoglyceride lipase, reacting the monoglyceride in the oil phase obtained in the step 1) and a hydroxyl donor, thus converting to obtain non-glyceride; 3) separating the non-glyceride component in the mixture obtained in the step 2) from the diglyceride, thus obtaining the high-purity diglyceride. According to the invention, the monoglyceride in the mixture is selectively removed through an enzyme method, the separation process is simplified, the energy consumption of the separation process is reduced, and the problem on the separation of MAG in the mixture is well solved. Meanwhile, the diglyceride content in the prepared product is up to 98% or above.

The invention discloses aerated biological activated carbon filters and a method of applying the same to purify feed water. Each up-flow aerated biological activated carbon filter comprises a water inlet tube, water and air distribution troughs, water and air distribution zones, a filter plate, a single-hole membrane aerated filter head, a coarse sand cushion and dual-layer granular activated carbon filters. The aeration system of the single-hole membrane aerated filter head is adopted for filter aeration. The mode of washing combining air and water is adopted for washing the filter. During washing, a perforated air distribution tube arranged in the water and air distribution zone at the bottom of the filter is adopted to blast air to the filter and aerate the filter, so that the filter washing water is drained from a blow-down tube at the bottom of the filter from top to bottom. The water flowing out of a sedimentation tank is distributed by a water distribution channel, then flows through the coarse sand cushion and the dual-layer granular activated carbon filters of the filter from bottom to top and is intercepted, filtered, absorbed and biologically degraded by the activated carbon filters and the micro-organisms attached to the activated carbon filters to remove the contaminants in the water. The filters have high purification efficiency of contaminants, good washing effect and low cost, save energy and are suitable for biological feed water treatment of micro-polluted water.

The invention discloses a device and a process for treating photovoltaic organic wastewater. According to the process, the photovoltaic organic wastewater passes through a grid water collection tank and is lifted to an adjusting tank by a water pump; then the photovoltaic organic wastewater is lifted into a reaction tank; an alkali, a flocculating agent and a coagulant aid are added by a medicament adding system to carry out coagulation and flocculation reaction; then the wastewater flows into a sedimentation basin by gravity for removing suspended matters in the wastewater; then the wastewater enters a hydrolysis acidification tank and hydrolysis acidification of the wastewater is carried out to convert macromolecular organic matters into micro-molecular easily-degradable matters; after BOD (Biochemical Oxygen Demand) / COD (Chemical Oxygen Demand) is improved, the wastewater flows into a pre-aeration tank by the gravity to carry out aerobic microorganism degradation; mixed liquid flows into a membrane reactor tank and organic matters are further degraded; the mixed liquid is filtered by the membrane reactor tank and effluent is pumped; the effluent is discharged after reaching the standards. The sludge mixed liquid in the membrane reactor tank flows back to the hydrolysis acidification tank and the pre-aeration tank according to a certain ratio. Sludge and one part of the sludge mixed liquid in the sedimentation basin are discharged into a sludge tank; the dehydrated sludge contains a lot of silicon powder and silicon carbide powder and can be recycled or sold.

The invention relates to an urban community sewage treatment and intermediate water reuse technology, in particular to a domestic sewage treatment method and the application thereof. More particularly, domestic sewage enters a receiving pool through a grizzly screen, after being removed large solid particles, the domestic sewage is pumped into a pretreated micro-oxygen aeration filter chamber by a water pump through a filter for the degradation of organic pollution in the sewage, after degradation, the water automatically flows through the outlet of the micro-oxygen aeration filter chamber to an ozone oxidation sterilizer for ozone oxidation, the oxidized water automatically flows to a storage pool for storing through the outlet of the ozone oxidation sterilizer; the treated resurgent water is used for flushing a urinal and then is directly discharged into a municipal sewage pipe network. The technology of the invention can greatly lower treatment cost, has simple, practical and convenient technological operation, high treatment efficiency, high quality of resurgent water as well as high reuse rate. The technology of the invention can reduce the discharge amount of community sewage by 50% and realize intermediate water recycling, thus reducing water consumption by 30-40%.

The invention relates to the field of tyre manufacture and particularly relates to a deburring device for a TB tyre side surface. The device includes two sets of cutting tool assemblies that are symmetrical left and right, a rack translation assembly, a tyre and a ball screw. The two sets of cutting tool assemblies are installed on the rack translation assembly and are disposed at both sides of the tyre; opening and closing motion driven by the ball screw is performed on the rack translation assembly to control the distance from the tyre side surface; the tyre is driven by a clamping rotationdevice to perform uniform speed rotary motion, and when the motion is smooth, the cutting tool assemblies are driven by the ball screw to move the tire at a uniform speed on the rack translation assembly, and stop when the cutting tool assemblies move to a suitable distance; at this time, cylinders of cutting tool mechanisms in the cutting tool assemblies perform air inlet work, and cutting toolsare pushed out on a to-be-trimmed tire, and then the cutting assemblies move downward as a whole, and when cutting blades complete trimming deflashing on a tyre surface, the cylinders work at this time, and the cutting tools are recovered; and the cutting tool assemblies are driven by the ball screw to move away from the tyre at the uniform speed until an entire trimming deflashing process is completed.

The invention discloses a processing device for removing nitrate from ground water, which mainly comprises a water outlet pipe, a quartz sand filter unit, a backwash water inlet pipe, a magnetic ion exchange (MIEX) resin processing unit, a water inlet, a first peristaltic pump, a second peristaltic pump and an MIEX resin regenerating unit, wherein the top part of the processing device is provided with a water outlet pipe; the quartz sand filter unit is arranged below the outlet pipe; a water distribution pore plate is arranged at the bottom of the quartz sand filter unit; the surface of the water distribution pore plate is covered by water filtering filter cloth; the backwash water inlet pipe is arranged below the quartz sand filter unit, and the MIEX resin processing unit is arranged below the backwash water inlet pipe; the water inlet is arranged at the bottom of the processing device; a water inlet water distribution pore plate is arranged above the water inlet; an outlet for resin to be regenerated of the MIEX resin processing unit is connected with the inlet of the MIEX resin regenerating unit through the first peristaltic pump; and the outlet of the MIEX resin regenerating unit is connected with the inlet for the resin to be regenerated of the MIEX resin processing unit.

The invention relates to a combined set for treating a micro-polluted source water in counties and towns, and the combined set comprises an inclined tube sedimentation tank, an aeration biozeolite filter column and an activated carbon filter column, wherein the inclined tube sedimentation tank consists of a water inlet region, a sloped tube region and a water collection region, the water inlet region is provided with turbulent stones and a baffle, the water collection region discharges water through a perforated water collection tank, the aeration biozeolite filter column consists of a water / gas inlet region, a filter material region and a water collection region, aeration is carried out in a blast aeration mode, gas is mixed in the water inlet region and enters the filter material region through a long-handle filter head, the filter material consists of coarse-grain zeolite and common-grain zeolite, the effluent water of the aeration biozeolite filter column enters the activated carbon column in a hydraulic drop mode, and the activated carbon filter column consists of a filter material region and a water outlet region. The inclined tube sedimentation tank water inlet region is provided with the turbulent stones and baffle to enhance the flocculation effect of the coagulant and the removal effect of the sedimentation tank. The activated carbon filter column connected to the aeration biozeolite filter column performs a two-stage biochemical synergistic action, and implements advantage complementation, thereby enhancing the water quality of the effluent water and lowering the treatment cost. The combined set can effectively remove ammonia nitrogen, organic substances, manganese and other pollutants in the micro-polluted source water, has the advantages of compact technical linkage, low investment and operating cost and stable quality of effluent water, and is suitable for being used in small-scale water generation occasions, such as water supply to counties and towns.

The invention relates to an acid and alkali resource recovery process technology from sodium saponification waste water discharged in a rare earth separating and manufacturing process. The acid and alkali resource recovery process technology of the invention mainly comprises three steps, including pre-treating of the waste water, treating by a membrane process and recycling of acids and alkalis. According to the process of the invention, acids and alkalis needed in the rare earth separating process can be produced from the sodium saponification waste water with high sodium chloride content, so as to effectively realize the purpose of zero release and acid and alkali resource recovery after treatment of the waste water.

The invention discloses a device and method for treating sewage with a low ratio of carbon to nitrogen. The device is formed by sequentially connecting a biochemical treatment unit, a magnetic anion exchange resin treatment unit, a contact filtering unit and a disinfecting unit by pipelines in series. According to the method for treating the sewage with the low ratio of the carbon to the nitrogen, the sewage with the low ratio of the carbon to the nitrogen is highly treated through steps of biochemical treatment, ion exchange, contact filtering, disinfection, discharge and the like. The device and the method for treating the sewage with the low ratio of the carbon to the nitrogen, disclosed by the invention, not only is low in technical cost and good in total nitrogen removing effect, but also remarkably strengthen an effect for removing organic matters and suspended matters so as to fully meet the requirement on water quality.

The present invention relates to a stain removal device, which enables hands to carry out stain removal operation at steady beating strength and beating speed all the time without fatigue,and can steadily provide liquid for stain removal. The stain removal device(100) comprises: a head part(1),which is provided with a beating face(111); a vibrator unit(2), which eables the head part(1) and the beating face(111) to vibrate in the substantially orthogonal direction by power supply; a liquid holding part(3), which holds liquid, and a water supply way(4), an end(41a) of wihch is connected to the liquid holding part(3) and the other end(1121h) of which opens around the head part(1); with the vibration of the head part(1) caused by the vibrator unit(2), the liquid is provided form the other end(1121h) of the water supply way(4) to around the head part(1).

The invention relates to a method for removing antibiotics resistance gene in sewage, and belongs to the technical field of sewage purification treatment. According to the method, the relevance between membrane surface pollutant components and the antibiotics resistance gene is inspected, a biological treatment and membrane technology combined process is adopted, biological treatment, membrane technology and membrane surface pollutant adsorption intercepting effects are organically coupled, adjustment and control and operating parameters during a membrane bioreactor biological process are fixed and optimized, and the optimum concentration of membrane surface organic pollutant required by the enhanced removal of the antibiotics resistance gene in the sewage is fixed, so that removal rate of the antibiotics resistance gene in the sewage reaches 93.7 percent. The method has the advantages that chemical agents are not required to be additional cast, secondary pollution is reduced, operation management costs are reduced, the significant requirements on economical, social and environmental sustainable development are met, the technology is simple and reasonable, industrialized application requirements on sewage advanced treatment and recycling are met, and a scientific and reliable novel technology is provided for controlling the spreading of the antibiotics resistance gene in the sewage.

The invention discloses a burring cutter capable of rebounding automatically. The burring cutter capable of rebounding automatically comprises a blade (1) and is characterized in that a vertical bar shaped hole (2) vertical to the blade (1) is formed in the middle of the lower part of the blade (1), a cutting edge (3) which protrudes a sidewall is formed at the sidewall of the lower part of the vertical bar shaped hole (2), an inclined bar shaped hole (4) obliquely intersecting with the vertical bar shaped hole (2) to form an angle of 130 degrees to 140 degrees is also formed in the blade (1) below the vertical bar shaped hole (2), and the bottom wall of the oblique bar shaped hole (4) extends to the sidewall of the blade (1) below the cutting edge (3). The burring cutter has good rebounding force and can remove burrs completely.

The invention relates to the field of laser marking, and especially relates to a method and system for removing a paint layer of an inductance copper wire by a laser. The method for removing the paintlayer of the inductance copper wire by the laser comprises the following steps of fixing an inductance copper coil through a jig; calling a marking drawing file, adjusting a laser marking parameter,and carrying out rough machining on a paint layer on the surface of the inductance copper coil by adopting a green light nanosecond laser with a first characteristic; and adopting the green light nanosecond laser with a second characteristic to remove residual paint layers, wherein the first characteristic is high energy, and the second characteristic is low energy, high frequency and high speed.According to the method for removing the paint layer of the inductance copper wire by the laser provided by the invention, the erosion of insulating paint layers of the inductance copper coil can be completed only through the marking drawing file and the laser, so that the efficiency is high, the surface of the removed copper material is smooth, the damage is small, and the welding of the coil andother components is facilitated. Compared with mechanical stripping, the laser processing has high precision and high efficiency, which can reduce equipment wear and shorten the production cycle; andcompared with a chemical corrosion process, the use and discharge of chemical substances can be reduced and the pollution is less.

The invention discloses anion-containing diatom nano mineral crystal particles and a preparation method thereof. The nano mineral crystal particles are prepared from raw materials in parts by weight as follows: 50-70 parts of sepiolite, 0.1-0.5 parts of anion powder, 5-10 parts of attapulgite, 10-20 parts of activated carbon, 5-10 parts of diatomite, 10-15 parts of kaolin and 3-5 parts of manganese oxide. The sieved sepiolite, anion powder, attapulgite, activated carbon, diatomite, kaolin and manganese oxide are weighed and mixed, and a proper quantity of sodium carbonate aqueous solution is added, and spheres are obtained through granulation; the nano mineral crystal particles are prepared after primary drying and activation. The prepared nano mineral crystal purification particles can adsorb formaldehyde, benzene, TVOC and other harmful gases and can play roles in decomposing, removing and releasing anions. Mineral materials such as sepiolite and attapulgite are used for bonding, the pure nature of the product is guaranteed, the preparation steps are simple, and the process is mature and suitable for industrial production.

The invention relates to the field of wood processing equipment, in particular to veneer sticking equipment for wood processing. The equipment comprises a device main body, a conveyor belt is movablyarranged at the lower end of the interior of the device main body, a touch rotating wheel is movably arranged on the left side of the interior of the device main body, a fit plate is movably installedon the outer side of the touch rotating wheel, a gluing rotating wheel is movably arranged on the outer side inside the touch rotating wheel, and a scraping plate is movably installed on the outer side of the gluing rotating wheel. A veneer roll is movably arranged at the upper end of the interior of the device main body, and the touch rotating wheel is arranged under the veneer roll, when wood enters the device main body under the drive of a baffle on the conveyor belt, acting force can be exerted on the touch rotating wheel to drive the touch rotating wheel to move upwards to make contact with the lower end of the veneer roll, and when the wood continues to move, the veneer roll can be driven to rotate clockwise by driving the touch rotating wheel to rotate, so that veneer on the outerside of the veneer roll can move downwards to make contact with the outer side of the wood. Automatic veneer sticking is achieved, and meanwhile energy consumption is saved.

The invention discloses an adlet brushing device with good cleaning effect and relates to the technical field of environment-friendly appliances. The adlet brushing device with good cleaning effect comprises a shell; a nozzle is fixedly connected to top of the shell; a first bolt piece is in threaded connection to inside threads of the left side of the nozzle; a longitudinal brushing barrel is arranged at the upper part of an inner cavity of the shell; a rotary rod is inserted into the axis of the longitudinal brushing barrel in a penetrating manner; the front end and the back end of the rotary rod are movably connected with the front side and the back side of the inner wall of the shell respectively; and the top end of a first conveyor belt is connected to the front end of the rotary rodin a sleeved manner. For the adlet brushing device with good cleaning effect, through contact of a first scraper with bristles at the bottom of the longitudinal brushing barrel, paper pulp on the bristles of the longitudinal brushing barrel are scraped off; and meanwhile, a second scraper moves and is contacted to bristles on the left side of the longitudinal brushing barrel, so that the paper pulp is prevented from being adhered to the bristles, and the scraping effect of an adlet is improved while one defect of most of the adlet brushing devices at present is solved.

The invention discloses an integrated small and medium multi-point water inflowing deep nitrogen and phosphorus removal sewage processing system and a processing method. The system and method are mainly used for processing high-concentration town sanitary sewage and high-concentration industrial waste water, especially COD, sanitary sewage with high ammonia nitrogen content or industrial waste water. The processing system comprises a grating adjusting pond, an aeration tank, a first anoxic pond, a first aerobic pond, a second anoxic pond, a second aerobic pond, a precipitating pond, a flocculation reaction pond and a flocculation precipitating pond which are successively communicated. The multi-point water inflowing mode is adopted, water resources are reasonably utilized, and the system has the advantages of being low in cost, efficient, capable of resisting loading and impacting, stable in quality of discharged water, convenient to operate and manage, and beneficial for integrated construction and saving of occupied area.

The invention discloses a method for preparing refined industrial salt low in calcium and magnesium by utilizing an underground denitration process. The method disclosed by the invention comprises the following steps: (1), injecting alkali production calcium liquid in a well and extracting brine; (2), underground removing sulfate radicals and magnesium; (3), surfacely removing calcium; (4), producing salt in vacuum; and (5), returning salt production mother liquid in the well and denitrating. The content of calcium and magnesium in industrial salt produced by the method disclosed by the invention is less than or equal to 0.05%, and therefore, the content of calcium and magnesium is far less than that in industrial salt produced by the traditional methods.

The disclosed impulse active biofilter fit to dispersed daily sewage in country and urban distant area comprises: arranging a high-level water tank (1) with a water inlet pipe (12) and a perforated water-distribution pipe (4) on top outside and inside the pond (13) respectively connected by a siphon system (2); under the water-distribution pipe (4), arranging from bottom to top a sludge pipe (10), a mud bucket (9), a deposition zone (8) with an air hole (7) and water outlet pipe (12) on side surface, a water-seepage plate (6), and the filter material (5). This invention has high-efficient treatment capacity, and can reduce energy consumption and equipment complexity.

The invention discloses detection equipment with a dust removal structure for the computer keyboard processing, and relates to the technical field of computer keyboard processing. The device comprises a base, a dust removal mechanism and a turnover mechanism, universal wheels are arranged at four corners of the lower end of the base, a placement frame is arranged at the upper end of the base close to the edge, a feeding conveying belt is arranged in the middle of the left side of the upper end of the base, a computer keyboard body is placed at the upper end of the feeding conveying belt, a placement transverse rail is arranged on the upper portion of the inner side of the placement frame, and a first transfer mechanism is arranged on the left side of the placement transverse rail. According to the device, a synchronous motor is matched and connected through second clamping assemblies arranged on the two sides of a dust removal tank, the computer keyboard body clamped by the second clamping assemblies can be overturned, a dust removal brush can remove dust on two faces of the computer keyboard body, the dust removal effect is guaranteed, meanwhile, an image detector and a high-definition camera can conveniently detect the appearance of the computer keyboard body, and the detection precision is guaranteed.

The present invention discloses a green walnut peeling device having rolling and rubbing functions. The green walnut peeling device comprises a frame body. A top part of the frame body is in an opening shape, two lifting devices are symmetrically fixedly connected with an outside wall of the frame body, a support plate is jointly fixedly connected with top ends of the lifting devices, and a rolling and rubbing device is fixedly connected with a lower side of the support plate; and a walnut placing plate is fixedly connected with an inside wall of the frame body and a plurality of through-holesare evenly opened in the walnut placing plate. Beneficial effects are as follows: when the support plate descends, the support plate drives a descending of the rolling and rubbing device, thus protrusions contact with green skins on upper sides of walnuts and are embedded in the green skins, then a first motor is started, the first motor drives a rotation of a first threaded rod, a first moving block cooperating with the first threaded rod moves left and right in a first moving groove to drive a left and right movement of a mounting plate, thus the protrusions move left and right, when the protrusions move left and right, the walnuts rotate, and the green walnut peeling device realizes a removal of the green skins on whole spherical surfaces of the walnuts and is high in removal efficiencies.

The invention relates to a method for removing nitrogen and phosphorus in wastewater by utilizing a magnesium salt in desulfurization wastewater. The method comprises the following steps: (1) introducing desulfurization wastewater into a pre-precipitation unit, adding lime, and performing pre-precipitation treatment; (2) adding sulfide into a heavy metal advanced removal unit for advanced removalof heavy metals; (3) adding a coagulant and a coagulant aid into a coagulation precipitation unit for coagulation precipitation; (4) adding Mg(OH)2 seed crystal, NaOH and a coagulant aid are added into a magnesium removal recovery unit to remove Mg<2+> and recover a magnesium salt precipitate; and (5) adding the magnesium salt precipitate recovered in the step (4) into a struvite crystallization unit in which phosphorus / ammonia nitrogen wastewater is introduced, and carrying out reaction and precipitation to remove nitrogen and phosphorus from the wastewater. Compared with the prior art, the method provided by the invention solves the difficult problem of treating desulfurization wastewater and softening sludge, realizes removal of phosphorus and nitrogen from wastewater while recovering nitrogen and phosphorus, and has practical significance of 'treating waste with waste' and recycling.

The invention discloses a smelting technology of ultralow boron steel, and belongs to the technical field of steel smelting. The smelting technology specifically comprises the stages of KR molten ironpretreatment, converter smelting, LF refining, pouring, cast blank stack cooling and cleaning, heating and rolling and steel plate stack cooling. According to the smelting technology, the boron content in molten steel can be controlled to be 0.0005% or below, the smelting requirements of the ultralow boron steel can be completely met, according to a prepared steel plate, the yield strength is higher than or equal to 462 MPa, the tensile strength is higher than or equal to 560 MPa, the ductility is higher than or equal to 25%, the impact strength at the temperature of minus 40 DEG C can reach186 J or above, and the overall performance is excellent.