87 results about "Sedimentation coefficient" patented technology

The invention provides a miriplatin freeze-dried powder injection and a preparation method thereof; the miriplatin freeze-dried powder injection contains miriplatin, and a mixed solvent of tert-butyl alcohol and anhydrous alcohol is used during the preparation of the miriplatin freeze-dried powder injection. Anhydrous alcohol is used during the preparation of the freeze-dried powder injection of the invention, which can reduce the temperature requirement of production environment for miriplatin powder injection, and can ensure that the miriplatin solution does not coagulate or locally coagulate in room temperature environment during production; the freeze-dried finished product has a central particle size distribution of 10-25 microns; when the freeze-dried finished product is suspended in an iodinate oil injection for 24 hours, the sedimentation coefficient and viscosity do not change significantly, that is, the produced sample is stable during clinical application; the preparation method of the miriplatin freeze-dried powder injection of the invention can effectively prevent the solution from coagulating or locally coagulating during production, and can reduce production cost, and the obtained miriplatin freeze-dried powder injection has low contents of relevant substances and stable quality.

The invention relates to waste lubricating oil regeneration coagulation sedimentation composite equipment, which belongs to the field of waste lubricating oil regeneration. When waste oil liquid is subjected to regeneration treatment with a flocculation sedimentation method, the long sedimentation time after flocculation reaction is the main reason for low regeneration efficiency. The purpose of the invention is to design coagulation sedimentation composite equipment which is compact in structure, simple in process, reliable in operation, high in sedimentation efficiency, convenient in cleaning, and low in investment and running cost. The equipment of the invention mainly comprises two parts which are a blending flocculation device and a sedimentation device, and adopts an idea of adding a plurality of partition plates in the flocculation equipment to reduce the relative sedimentation distance. Compared with the existing equipment, the equipment of the invention organically combines the blending flocculation device and the sedimentation device, so as to reduce the floor area of the equipment, saves the manufacturing cost of the equipment, improves the efficiency of flocculation and sedimentation. According to the equipment of the invention, the structure is scientific and simple, the design is reasonable and reliable, the floor area is small, the cleaning of sedimentation impurities is convenient, pollutants can be well removed, and the quality of regenerated lubricating oil is improved, resulting in a high practical value.

The invention discloses a method for extracting orange peel pectin by softening orange peels and inactivating pectinesterase. The method comprises the following step of: soaking fresh orange peels in a mixed solution which is obtained by proportionally mixing sodium hexametaphosphate, citric acid and sodium dihydrogen phosphate, to perform tissue softening treatment and pectinesterase inactivation treatment. The mixed solution contains, per 100 g, 41 g of sodium hexametaphosphate, 40 g of citric acid and 20 g of sodium dihydrogen phosphate. By the above treatments, the molecular weight of the pectin extracted from orange peels is increased and the quality is improved. The orange peel pectin is decolorized by macroporous absorption resin AB-8 to greatly improve the color of the pectin. Besides, during alcohol precipitation, the pH value of the solution is adjusted to 3.5, so as to optimize the sedimentation coefficient of the orange peel pectin and thus to increase the pectin yield.

The invention relates to a secondary lining arch foot sedimentation experiment loading device. The device comprises a secondary lining and a geosyncline. The secondary lining comprises two pedestals and an arc structure located between the two pedestals. One pedestal and the geosyncline form solidification. The other pedestal and the geosynclines are driven by a sedimentation device so as to carry out load applying of an arc structure end portion and deformation sedimentation. A surface of the arc structure is provided with a displacement deformation monitoring system used for monitoring a node displacement value and a unit strain value during the load applying. The secondary lining arch foot sedimentation experiment loading device can solve a condition that sedimentation exists at an arch foot in a research during mountain tunnel secondary lining. Construction is convenient, operation is simple and the device is economical and practical.

The invention relates to a high effective water supplying coagulation sedimentation tank. The invention consists of a cylindrical mixing device with adjustable speed and amount, a coagulation device with an adjustable grid space and a sedimentation device of a close-distance slant plate with an adjustable obliquity. An adjusting gate is arranged on a water inlet and a water outlet of the cylindrical mixing device with adjustable speed and amount and an adjusting and controlling device is arranged above the adjusting gate to be used for adjusting the water amount and flow of the water inlet and the water outlet to gain the best water-drug mixing effect. The space of coagulation grids and the obliquity of the close-distance slant plate are both adjustable. The invention solves the inadaptive problem that due to the unchange of parameters of the mixing device, the coagulation device and the sedimentation device, water amount of the coagulation sedimentation tank is changed, therefore the coagulation sedimentation tank of a water supply treatment plant can adjust the parameters of the mixing device, the coagulation device and the sedimentation device according to the change of water amount during water-supply working status.

The invention provides an intelligent seat cushion. The intelligent seat cushion comprises a main body, a reminding device, a timer and a pressure detection component, wherein the main body is used for supporting a user; the reminding device is arranged inside the main body and is used for reminding the user; the timer is connected with the reminding device and is used for starting the reminding device according to a preset time; and the pressure detection component is connected with the timer and the reminding device respectively and is used for starting the timer when a pressure is detected and closing the timer and the reminding device when the pressure disappears. Through implementation of the technical scheme, the intelligent seat cushion has the following technical effects: the intelligent seat cushion can remind the user of the time for keeping a sitting posture; the reminding intensity gradually increases along with the reminding time; the intelligent seat cushion is connected with a mobile terminal and sends the time for keeping the sitting posture to the mobile terminal for calculating the sedimentation coefficient of calories of the user; and the intelligent seat cushion is simple in structure and easy to implement.

The invention relates to a separation and filtering method of molecular sieve crystallization slurry. The method comprises the following steps: (a) injecting a molecular sieve crystallization slurry serving as a primary slurry into a sedimentation device; (b) settling the primary slurry in the sedimentation device, layering solid and liquid to form an upper mother solution and a lower solid sediment; (c) taking out the layered upper mother solution from the sedimentation device; (d) adding water into the residual solid sediment in the sedimentation device; (e) uniformly mixing the solid sediment with the added water to form a diluted slurry; and (f) delivering the diluted slurry to a filter device to filter. According to the invention, the method has the advantages of simplicity in operation, good economy, high separation efficiency and less environmental pollution and hurt to health of operators.

The invention discloses an inclined tube sedimentation tank comprising a tank body (1), wherein an agitation region (3) with an agitator (2) is arranged at one end of the tank body (1); a water inlet (4) is formed in the tank body (1) on the outer side of the agitation region (3); the agitation region (3) is connected with a sedimentation region (7) through a through hole (6) in a separation board (5) on the inner side; a honeycomb inclined tube deposition layer (8) and a mud bucket (9) are respectively arranged at the upper part and the lower part of the sedimentation region (7); a water discharging region (10) is arranged on the upper side of the honeycomb inclined tube deposition layer (8); and one end of the water discharging region (10) is provided with a water discharging weir (11) to be communicated with a water outlet (12). When the inclined tube sedimentation tank disclosed by the invention is used, medicines are added into sewage to be mixed, and then a mixture is conveyed into the agitation region; after the mixture is sufficiently reacted, the mixture enters the bottom of the sedimentation region; the mixture flows upwards to pass through the honeycomb inclined tube deposition layer to realize the aim of mud-water separation; discharged water flows upwards to the water discharging region and then is discharged through the water discharging weir; and the inclined tube sedimentation tank has the characteristics of high sedimentation efficiency, less investment, fast effect and convenience in use, and is suitable for popularization and utilization.

The invention belongs to the technical field of air particle collection, and particularly relates to an automatic collector for collecting micro plastic in an air source. The automatic collector is composed of a controller, a rainwater sensing system, a windward collection portion and a sedimentation collection system. The automatic collector can automatically sense weather conditions in air environment and switch form of a collection system according to different weather conditions to complete collection of the collector in different weather conditions. The automatic collector is conducive to collecting micro plastic samples in different environments to provide a reliable sample source for subsequent researches and has the advantages of simplicity and convenience in operation, accuracy in collected data and wide application environment range.

The invention relates to inclined plate sedimentation equipment. In a sedimentation process applied in the field of water treatment, after an inclined plate sedimentation tank and an inclined plate sedimentation tank with small spacings operate for a period of time or when the water quality and the water volume are changed, sedimentation efficiency and effluent quality of the inclined plate sedimentation tank and the inclined plate sedimentation tank with small spacings are obviously reduced so as to cause serious mud accumulation and blockage between inclined pipes and inclined plates, even collapse of the inclined pipes and the inclined plates. A bidirectional flow variable-spacing inclined plate sedimentation tank comprises a bidirectional flow sedimentation tank, wherein the bidirectional flow sedimentation tank is divided into two parts by a guide wall; a first part is a same-way flow large particle sedimentation region; an included angle between each inclined plate and the horizontal plane in the same-way flow large particle sedimentation region is 45 degrees to 60 degrees; a second part is a reverse flow small particle sedimentation region; an included angle between each inclined plate and the horizontal plane in the reverse flow small particle sedimentation region is 55 degrees to 70 degrees; spacings between the inclined plates in the two sedimentation regions are different; the second part of the bidirectional flow sedimentation tank is provided with a water collecting tank; the tail end of the water collecting tank is provided with a water outlet pipe; and a sedimented sludge hopper and a sludge pipe are arranged on the lower surface of the bidirectional flow sedimentation tank. According to the invention, large and small particles are regionally sedimented, so that the problem of blockage between the inclined plates is avoided and sedimentation efficiency is high.

The invention discloses a method for measuring the permeability coefficient of room particulate matter. The method comprises the following steps: obtaining the air volume data V of the room; detectingand continuously recording the concentration Cin of the particulate matter in the room and detecting and continuously recording the concentration Cout of the particulate matter outside the room; andcalculating and processing according to the formula I on the basis of the air volume data V in the room, the concentration Cin of the particulate matter in the room and the concentration Cout of the particulate matter outside the room so as to obtain the permeability coefficient p of the particulate matter, wherein k is the natural settlement coefficient, Q is the fresh air volume in the room andQc is the air volume of the air purifier. According to the method and the system for measuring the permeability coefficient of the room particulate matter, the concentration of the particulate matterinside and outside the room and the concentration of CO2 in the room are directly detected and then the permeability coefficient of the room particulate matter is obtained through calculation so thatthe detection method is simplified and the detection process is more convenient and the detection result is more accurate.

The invention discloses a sedimentation device for sewage treatment. The sedimentation device includes a supporting pedestal, a sedimentation chamber, a material guiding pipe, a feeding hopper and discharge pipes; the sedimentation chamber is mounted on the supporting pedestal and has a cylindrical cavity body structure having the bottom tilted to a sewage draining port; the inner wall of the sedimentation chamber is provided with guide plates A in an tilting manner; guide plates B are arranged between the guide plates A and are mounted on the material guiding pipe in an tilting manner; the material guiding pipe is mounted on the feeding hopper; the feeding hopper is mounted at the upper edge opening of the sedimentation chamber; the discharging pipes are mounted below the upper edge opening of the sedimentation chamber; the sedimentation chamber is provided with exhaust ports; the exhaust ports are located above the discharging pipes. A tank body and the material guiding pipe are adopted, and the guide plates A and the guide plates B are respectively mounted on the tank body and the material guiding pipe in the titling manner, so that the sewage flow rate is reduced, the particle adhesion area is increased, the sedimentation time and the drug use amount are reduced, the production cost is lowered, and the production efficiency is improved.

The invention relates to a sequencing batch type static sedimentation method and a system thereof, wherein the method comprises the following steps: at the first static sedimentation pond water intake and decanting stage, under the hydraulic action, the supernatant is lifted layer by layer, is overflown and discharged by a water outlet weir of an air weir water decanting machine; when the replacement ratio of the supernatant to earth water mixed liquid reaches the set value, and the first static sedimentation pond water intake and decanting stage ends; the reaction stage starts, wastewater after pre-treatment or biochemical treatment is subjected to re-treatment, and the reaction stage ends when the preset reaction time achieves, the first static sedimentation pond enters the static sedimentation stage, sludge is freely settled in static current, and the static sedimentation stage ends when the preset static sedimentation time achieves; and while the first static sedimentation pond enters the reaction stage, the water intake and decanting stage of a second static sedimentation pond starts, and actions in the first static sedimentation pond are repeated. The whole sedimentation process is completed by the sequencing batch type static sedimentation system formed by at least two static sedimentation ponds, thereby overcoming the defects existing in the dynamic sedimentation mode and having the advantages of strong practicability, high sedimentation efficiency, convenient operation and maintenance, compact structure, high land use rate and the like.

The invention discloses an industrial sewage flocculation and sedimentation device. The lower part of a driving motor is rotatably connected with a driving shaft, a bearing of the driving shaft is rotatably connected with a device body, the upper part of the driving shaft is fixedly connected with a first bevel gear, and a second bevel gear is fixedly connected with a driven shaft; the end portionof the driven shaft sleeves the lower end of a boom, the upper end of the boom is fixedly connected with the device body, the other end portion of the driven shaft is rotatably connected with the device body, the driven shaft is fixedly connected with an eccentric wheel, a clamping groove is formed at the edge of the eccentric wheel, the upper surface of a sealing plate is clamped in the clampinggroove, and the edge of the sealing plate is tightly and slidably connected with the inner wall of the device body. The device drives a stirring rod to rotate by the rotating driving shaft, so that aflocculating agent and sewage are fully mixed for flocculation, the sealing plate moving up and down back and forth makes the pressure of the lower part of the device body increase and reciprocate toopen a rotating plate, the flocculated clean water enters the upper part of the device body through a guide pipe and a filter screen and is drained from a drain pipe, flocculates and water liquid canbe separated, the sewage can be recycled, and water resources can be saved.

The invention relates to a dewatering treatment device for low-concentration pulp in pipes and a treatment method of the dewatering treatment device. An input end of a pulp flowing sedimentation device is connected with a low-concentration ore pulp inlet pipe, two output ends of the pulp flowing sedimentation device are respectively connected with a pulp stirring tank and a water pond, wherein the output end connected with the pulp stirring tank is located at the bottom of the pulp stirring tank, an output end of the pulp stirring tank is connected with a main delivery pipe via an underflow pump, and the radial transaction area of a cavity of the pulp flowing sedimentation device is larger than that of the low-concentration ore pulp inlet pipe. By the aid of the pulp flowing sedimentationdevice which can greatly reduce the flowing speed of pulp, the low-concentration pulp flowing in the pulp flowing sedimentation device can realize partial sedimentation and layering in the pulp flowing sedimentation device, then distribution of water or pulp with different concentrations is completed by means of adjusting a valve, and treatment for head pulp or tail pulp with the concentration incapable of reaching the standard during delivery of ore pulp pipes is realized well.

The present invention relates to the technical field of environmental protection equipment and particularly relates to a municipal environmental protection sewage sedimentation treatment device. The municipal environmental protection sewage sedimentation treatment device can discharge clear liquid at different positions to improve use reliability, at the same time can separate sewage after sedimentation from the sewage not subjected to the sedimentation to improve use effect, also enhances the even mixing effect between flocculants and the sewage to improve the sedimentation effect and enhancethe use effect, and at the same time treats waste gas generated during a dehydration process of sludge passing through a sludge dehydration machine to improve surrounding environment and improve usability. The municipal environmental protection sewage sedimentation treatment device comprises a base seat, a bracket, a work box, an input pipe, an output pipe, a material feeding pipe, a material discharging pipe and the sludge dehydration machine, further comprises a fixing member, an adjusting member and a sieve plate, further comprises two sets of stirrers, further comprises a purifying member, a support frame and a communicating pipe which is arranged on an exhaust port of the sludge dehydration machine and further comprises a placing frame, a first telescopic motor, a connecting hose, aconnecting hard pipe and a supporting plate; and the connecting hose is arranged at an input end of the output pipe.

The invention discloses a separation and precipitation device for nematodes in soil, comprising a separation pool having a built-in strainer, a water outlet arranged on the bottom surface of the separation pool, a first precipitation pool arranged vertically below the water outlet, and a second precipitation pool which is arranged near the first precipitation pool at the same horizontal level as the first precipitation pool and communicated with the first precipitation pool through pipes, wherein, the height of the first precipitation pool is larger than that of the second precipitation pool. According to the invention, by arranging two precipitation pools communicated with each other through pipes below the separation pool, all soil and nematode cysts can be intercepted, so that the biological contamination and sewer plug can be prevented. The device makes full use of the self-mastery of water to work, and has the advantages of environment protective and energy saving.

The invention relates to an anti-sedimentation device of a cage type condenser, belonging to the technical field of dust-cleaning apparatuses. The anti-sedimentation device of the cage type condenser comprises a box (1), wherein a dust cage (2) is arranged in the box (1); a floating cotton compression roller (3) and a cotton stripping roller (4) are arranged under the dust cage (2); a triangular fiber settlement zone (10) is formed on the back surface of the cotton stripping roller (4); an air supplement hole (5) is formed in the box (1) in the fiber settlement zone (10); a cambered sealing plate (6) is arranged in the dust cage (2); the rear end of the cambered sealing plate (6) extends upwards; and the radian of the extended cambered sealing plate (6) is 100 degrees. The anti-sedimentation device of the cage type condenser provided by the invention is characterized in that the air supplement hole is additionally formed in the triangular zone, and simultaneously, the cambered sealing plate in the cage is extended, so that high-speed flowing airflow far away from the zone is formed in the triangular zone; the airflow is capable of bringing settled fine fiber dust back to the dust cage immediately; and the fine fiber dust can be stripped into a cotton bucket in the next cotton stripping process; and therefore normal operation of the condenser is guaranteed.

The invention discloses a grilled lamp, a sedimentation device and a method for improving density of a loosened body of an optical fiber precast rod. The sedimentation device comprises the grilled lamp and two sedimentation blowing lamps, wherein the two sedimentation blowing lamps are positioned in the same vertical plane; the second sedimentation blowing lamp is positioned above the first sedimentation blowing lamp; the grilled lamp is not positioned in the vertical plane and arranged on the inclined upper part of the second sedimentation blowing lamp along a rotation direction of the loosened body of the optical fiber precast rod. When the grilled lamp and the two sedimentation blowing lamps meet the condition that (c-b) is more than or equal to 0 and less than or equal to (b-a), a, b and c are the heights of a sedimentation point of the first sedimentation blowing lamp, a sedimentation point of the second sedimentation blowing lamp having a distance away from the bottom end of the loosened body of the optical fiber precast rod. The invention also discloses the method for improving the density of the loosened body of the optical fiber precast rod by using the sedimentation device, the grilled lamp used in the sedimentation device and the method for improving the density of the loosened body of the optical fiber precast rod by using the grilled lamp.

The invention discloses a test device for the sedimentation drag coefficients of drilling cutting particles. The test device comprises a simulated wellhole, a high speed camera, a data collector and acomputer. In addition, the test method comprises the following steps: step A, carrying out experimental preparation work, sorting experimental settlement drilling cuttings by using a screening net, injecting prepared liquid in a simulated wellhole, and carrying out standing to prevent bubble generation; step B, aligning the camera at the simulated wellhole, placing different mesh numbers of sorted drilling cutting particles in a liquid level slightly one by one, observing a sedimentation experiment of the drilling cutting particles in liquid, and collecting object sedimentation images; step C, processing the collected images and acquiring sedimentation speeds of the drilling cutting particles by using a frame difference method; step D, calculating a sedimentation drag coefficient based onthe sedimentation speeds obtained by the experiment; and step E, constructing a new shape description factor to obtain a new sedimentation drag coefficient empirical model. Therefore, the sedimentation drag coefficients of rock debris particles with different shapes can be analyzed deeply; and thus the prediction accuracy is improved.

The invention belongs to the technical field of waste gas treatment, and particularly relates to a composite type waste gas treatment device. The device comprises a machine shell, a smoke dust pipeline, a first gas pump, a filtering device, a gas delivery pipe, a second gas pump, a sedimentation device, a purification device and a stirring device, wherein the smoke dust pipeline is communicated with the upper end of the machine shell; the first gas pump is fixedly connected with the middle of the smoke dust pipeline; the filtering device is communicated with the lower end of the smoke dust pipeline; the gas delivery pipe is communicated with the lower end of the filtering device; the second gas pump is fixedly connected with the middle of the gas delivery pipe; the sedimentation device iscommunicated with the lower end of the gas delivery pipe. The filtering device and the sedimentation device are arranged, so that the waste gas filtering effect is improved, and the situation that particulate matter and dust in waste gas leak to the outside environment and cause pollution is avoided. The purification efficiency of the waste gas is accelerated by arranging the purification device and the stirring device, so that harmful substances in the waste gas are rapidly purified, and the purification effect is good.

The invention discloses a flocculation and sedimentation device for sewage. The flocculation and sedimentation device comprises a pool body, a precipitation device and a flocculation device, wherein the precipitation device comprises fixed rods, connecting rods and sloping plates, wherein the front ends and the rear ends of the upper sides of the sloping plates are separately and movably connected with the fixed rods by first rotating shafts; the front ends and the rear ends of the lower sides of the sloping plates are separately and movably connected with the connecting rods by second rotating shafts; a water outlet groove is formed in the upper end of the pool body and consists of two sawtoothed water outlet side plates and one smooth water outlet base plate; the flocculation device comprises a first umbrella skeleton, a second umbrella skeleton, screen cloth and a driving oil cylinder; an output shaft of the driving oil cylinder is fixedly connected with a supporting rod; the first umbrella skeleton is arranged at the top end of the supporting rod; the periphery of the first umbrella skeleton is attached and covered with the screen cloth; the second umbrella skeleton is arranged at the lower end of the first umbrella skeleton; a supporting sleeve is arranged outside the supporting rod in a sleeving manner and is also arranged in a blow-off pipe. The flocculation and sedimentation device disclosed by the invention has the advantages that quick precipitation, blockage prevention and efficient pollution discharge are realized; secondary diffusion of flocculates is effectively prevented.

The invention discloses an oral care composition. The oral care composition is composed of multi-phase unilamelar liposome mediated recombination epidermal growth factors and ectoine biosynthesis mixed water gel, wherein the liposome accounts for 80-99.8% the weight of the composition, and the average grain diameter is 600-1600 nanometers; the recombination epidermal growth factors account for 0.1-10.0% the weight of the composition, the concentration is 100-2000 mg/kg, the molecular weight is 5900-6500 Da, the sedimentation coefficient is 1.20-1.30 S, the isoelectric point is pH 4.5-4.9, and the recombination epidermal growth factors are freeze-dried powder. The ectoine biosynthesis mixed water gel accounts for 0.1-10.0% the mass of the composition, the purity is 99-100%, and the ectoine biosynthesis mixed water gel is powdery. The oral care composition has the synergistic interaction effect on prevention and treatment of oral inflammations and anabrosis.

The invention discloses an online treatment system with a particle separation and sedimentation device. The online treatment system comprises an online treatment tank, wherein a particle separation and sedimentation device is arranged in the online treatment tank and comprises at least two baffle walls, the baffle walls are oppositely arranged at the bottom of the online treatment tank and extendtowards the upper end of the online treatment tank, and a support framework is arranged at the upper ends of the baffle walls; a filter screen is distributed on the support framework to form a semi-closed cavity facing towards one end of the water inlet pipe of the online treatment tank, the semi-closed cavity has an opening and is used for filtering and settling rainwater entering the online treatment tank. According to the online treatment system, the rainwater is pretreated by virtue of the combination of gravity settling and the filter screen, floating objects and greasy dirt in the rainwater are intercepted and are collected into the filter screen, particulate matters in the rainwater are blocked by virtue of the baffle walls and are settled at the bottom of a cavity between the baffles, and finally water flowing out from a water outlet pipe does not contain floating objects, is low in particle content and is relatively clean, so that the pollution of a water body is prevented.

The invention discloses a central cylinder cyclone separation and sedimentation device, comprising a tank, a breaking syphonic mouth, a residue discharge hole, an oil discharge hole, an overflow hole,a reversed U-shaped overflow pipe, an upper filter plate, a manhole, a lower filter plate, a water inlet pipe, a backwashing water distribution pipe, a sewage outlet, a center tube breathing hole, abreathing mouth, a residue collecting tank, an oil collecting tank, a water outlet pipe, an outlet water collecting pipe, a filter material, a central pipe, an upper water distribution pipe of a swirling cone, the swirling cone, a backwashing mouth and a central pipe sewage outlet. The central cylinder cyclone separation and sedimentation device can effectively guarantee the distance between the outlet water collecting pipe, namely, a water outlet layer and the uppermost liquid level scum as well as the distance between the water outlet layer and a floating oil layer, thus avoiding the mutualinfluence of sludge, oil and water, and being higher in separation efficiency; the central cylinder cyclone separation and sedimentation device utilizes the layered sedimentation characteristic of thesludge to guarantee the sinking efficiency of the sludge, and the sludge layer can effectively intercept the tiny suspended matters, so that the clear water is enabled to float upwards; the swirlingcone of the device is arranged at the lower part of the central pipe, the upper part of the swirling cone is used for discharging water, and the discharged water is directed toward the periphery of the tank, so that the water flow is enabled to be in a radial flow rising way, and the advection precipitation the effect of the effluent is improved.