3134 results about "Filter press" patented technology

The present invention belongs to the field of resource utilization of building materials and solid waste, and relates to a red-mud-based cementing material based on efficient drying, component homogenization and activity improvement, and a preparation method therefor. The preparation method comprises: adding a filter aid to red mud to carry out sedimentation, then subjecting same to filter pressing until the water content is 14-16%, then drying the solid material, which has been subjected to filter pressing, until the water content is 4% or below, and finally grinding same to obtain the product. The filter aid comprises the following raw materials: 10-30 parts of polyaluminum chloride, 5-15 parts of polyaluminum sulfate, 1000-1200 parts of blast furnace slag or fly ash, 700-900 parts of steel slag, 400-600 parts of carbide slag or alkaline residues, and 300-400 parts of desulfurized gypsum or phosphogypsum or fluorgypsum. By means of the present invention, the dehydration efficiency of red mud can be improved, the red-mud-based cementing material can also be prepared in one step; the preparation process for the red-mud-based cementing material is simplified; and the prepared red-mud-based cementing material has the advantages of a high mechanical strength, high durability and erosion resistance.

A filter press includes a fabric stacking device, a filter press frame assembly, and a filter press device. The filter press frame assembly includes a filter press frame and a base plate. The filter press device includes a base, a main hydraulic cylinder, and a pressure plate. The fabric stacking mechanism includes a frame, a filter cloth operating assembly, a sludge discharge mechanism, a sludge separating and pressing mechanism, a pressing roller, and a fabric stacking and feeding mechanism. The filter cloth operating assembly includes a cloth winding mechanism, a winding and measuring mechanism, and a filter cloth correction mechanism. The cloth winding mechanism includes a cloth winding roller that can move along its own axial direction and rotate around its own axis. The cloth winding roller adjusts its position by moving along its own axial direction according to the detection result of the winding and measuring mechanism. The sludge separating and pressing mechanism includes a pressing plate with a horizontally arranged pressing part. The setting height of the pressing roller is adjustable, and the axis of the pressing roller is perpendicular to the moving direction of the lower filter cloth. The fabric stacking and feeding mechanism is located at one end of the frame and is used to transport sludge bags formed by the upper and lower filter cloths wrapping sludge. This invention can automatically correct the filter cloth deviation, keep the filter cloth flat, and prevent sludge leakage.

The invention relates to the technical field of sewage treatment, and discloses spodumene flotation tailing water treatment equipment which comprises a plate-and-frame filter press and a feed flow real-time control system electrically connected with the plate-and-frame filter press. According to the system, a slurry characteristic coefficient, a power supply coefficient, a dynamic matching coefficient and a filter cloth state coefficient are respectively obtained in real time through a slurry state evaluation module, a power evaluation module, a process dynamic matching module and a filter cloth state evaluation module. And dynamically calculating and adjusting the target feeding flow by the feeding flow adjusting and controlling model according to the coefficients. According to the invention, through multi-parameter collaborative sensing and intelligent matching, the dynamic adaptation of the feed flow, the slurry characteristics, power supply and the state of the filter cloth is realized, the technical problems of poor adaptability, control lag, easy damage of the filter cloth and high energy consumption of the traditional plate-and-frame filter press under complex working conditions are effectively solved, and the treatment efficiency and the operation stability are remarkably improved.

The invention relates to the technical field of filter press cleaning and discloses a plate-and-frame filter press cleaning system.The plate-and-frame filter press cleaning system comprises a spraying device, a sensor assembly, a control system and a sewage collecting tank, dirt and filtering resistance on the surface of filter cloth are detected through the sensor assembly, and the control system adjusts the working state of the spraying device according to sensor signals; according to the plate-and-frame filter press, the filter cloth of the plate-and-frame filter press is washed by the spraying device, and sewage generated by washing enters the sewage collecting tank for treatment, so that the working efficiency of the plate-and-frame filter press is improved, the efficiency reduction and manual cleaning requirements caused by blockage of the filter cloth are reduced, and the labor cost is reduced; the invention further provides a plate-and-frame filter press cleaning method, infrared thickness detection and pressure change rate two parameters are fused, the defect of a single sensor is avoided, the anti-interference capacity of the system is remarkably improved, cleaning is triggered based on the dirt index threshold value, cleaning is more timely and effective, and the service life of filter cloth and the service life of whole equipment are prolonged.

The invention discloses a high-pressure belt conveyor low-cost sludge dewatering technology, and relates to the technical field of sludge dewatering, the technology comprises the following steps: S1, in a pretreatment stage, adding a ferric chloride agent and destroying a sludge colloid structure; s2, in the conditioning stage, lime powder is added to adjust the pH value, and a porous skeleton structure is constructed; s3, adding a polyacrylamide medicament in a flocculation stage to form a compact floc; s4, a high-pressure belt filter press is used for mechanical dehydration in the dehydration stage; s5, recovering the filtrate for redissolving the medicament; s6, performing dynamic linkage optimization of chemical dosing and filter pressing parameters through a dynamic chemical dosing algorithm of the control system; the dosage of chemicals is effectively reduced, the sludge dewatering effect is improved, the sludge dewatering treatment cost is reduced, and the cyclic utilization of resources is realized; the technical problems that an existing sludge dewatering technology is too high in agent cost, low in agent matching and combination reliability and insufficient in technology adaptability are solved.

The invention discloses a filter plate cleaning device for a plate-and-frame filter press, and relates to the technical field of plate-and-frame filter presses, the filter plate cleaning device comprises a filter press body, a nozzle dismounting mechanism is arranged on the left side of the filter press body, a blade dismounting mechanism is arranged above the filter press body, the nozzle dismounting mechanism comprises a dismounting unit, and the dismounting unit is arranged on the left side of the filter press body. The nozzle dismounting mechanism further comprises an automatic discharging unit, the automatic discharging unit is arranged on the left side of the filter press body, the automatic discharging unit is matched with the dismounting unit, the dismounting unit ejects the used nozzle to the ground, and the blade dismounting mechanism is matched with the nozzle dismounting mechanism. According to the filter plate cleaning device for the plate-and-frame filter press, by arranging the dismounting unit, the automatic discharging unit and the blade dismounting mechanism, the problem that a high-pressure spray head and a blade need to be manually replaced regularly when equipment is used can be effectively avoided.

The embodiment of the utility model provides a filter plate of a plate-and-frame filter press and the plate-and-frame filter press, and relates to the technical field of filter presses. The filter plate of the plate-and-frame filter press comprises a filter plate main body, a plate frame body and a filter disc plate, and connecting grooves are formed in the front side and the rear side of the tops of the two sides of the filter plate main body. A pressing plate is pressed to drive a pull rod to move downwards, a second clamping plate is driven to move when the pull rod moves, the second clamping plate extrudes and retracts a spring set, at the moment, the second clamping plate is separated from the surface of a first clamping plate, and then a plate frame body and a filter disc plate can be detached for maintenance or replacement; meanwhile, when filtering work is completed and a hydraulic cylinder drives a movable end to be separated from a filter plate main body, a second spring is reset to drive a sliding ring to move on the surface of a positioning rod, so that a supporting plate drives a propping plate to move, and the propping plate drives a guide wheel and the spaced filter plate main body to assist in bouncing off, so that filtered materials are conveniently discharged, the pressure of a shifting device is reduced, and the filtering efficiency is improved. And the discharging efficiency is improved.

The invention discloses a filter cloth on-line automatic cleaning control method and system for a filter cloth walking type filter press, and relates to the technical field of solid-liquid separation equipment automation control, and the method comprises the following steps: S100, constructing a cleaning control topological structure, grouping filter cloth according to the number of the filter cloth, configuring a corresponding cleaning solenoid valve and a cleaning nozzle for each group, the valve opening sequence table is connected to a cleaning pump through a cleaning pipeline, and meanwhile, a set of valve opening sequence table for all groups is generated. The filter cloth is grouped, the cleaning valves and the nozzles are independently controlled, and real-time parameter calculation and alternate valve opening logic are combined, so that accurate scheduling and balanced distribution of the cleaning area and frequency are realized. Through a walking counting and condition judgment mechanism, cleaning is started according to needs, efficiency is improved, and energy consumption is reduced. A closed-loop control process of setting, judging, executing, alternating and recording is constructed, and the comprehensive technical effects of filter press cleaning rhythm stability, resource optimization, efficiency improvement, equipment service life prolonging and the like are achieved.

The utility model relates to a spatial multilayer ultrahigh pressure belt type dehydration system which comprises a main rack, a material distributing and feeding device, a material distributing device, a filter belt, a filter belt traction machine, a filter pressing hydraulic machine, a hydraulic station and a controller, the material distributing and feeding device, the material distributing device, the filter belt traction machine and the filter pressing hydraulic machine are connected and mounted on the main rack; and the output end of the material distributing and feeding device is connected and mounted above the material distributing device. The dehydration method comprises the steps of equipment starting, material distribution, filter pressing dehydration and unloading. The organic waste dehydration device is higher in dehydration efficiency and lower in cost, and can be used as an organic waste dehydration device capable of reducing pollution and carbon.

The present invention belongs to the technical field of material dehydration, and particularly relates to a dehydration device for an urban waste biomass-based composite phase change material, which comprises a bracket. A roll press filter is installed on the bracket. The roll press filter includes two side plates, two pairs of driving rollers, two guide rollers, two filter belts with mesh holes, and a connecting frame. Two hollow brush barrels driven by a gear set are rotatably connected between the two side plates. The hollow brush barrels have bristles that contact the filter belts. A drying box is installed on the bracket, and a rotating spiral frame is arranged in the drying box. The material after being filter-pressed by the roll press filter enters the drying box for drying. The rotating spiral frame and the stirring rods make the material turn over. Under the action of the gear set, the rotating hollow brush barrels brush off the material on the filter belts through the bristles, reducing the adhesion of the material and ensuring the effect of subsequent filter-pressing of the filter belts on the material. The moving inclined plate reciprocates through a moving mechanism to break the material, reducing the stacking of the material and improving the drying effect.

The utility model provides a sludge deep dehydration filter press convenient for replacing a filter plate, which belongs to the technical field of filter presses and comprises a rack, a filter pressing component and a material taking component, a mounting plate is fixedly mounted at one end of the rack, and a thrust plate is mounted at the tail end of the rack; when the filter plate is dismounted, the mounting seat is controlled to slide on the surface of the transverse plate at the top of the supporting leg, the mounting seat slides to drive the electric push rod mounted on the surface to move, and the top block mounted at the telescopic end of the electric push rod corresponds to the sliding blocks mounted on the two sides of the filter plate frame; the top block drives the slide block to rise from the slide rail, so that the filter plate frame is taken out from the slide rail, and the filter plate in the filter plate frame is convenient to replace and clean.

The invention relates to the technical field of wastewater treatment, in particular to water treatment plant reverse osmosis wastewater treatment equipment and method.The water treatment plant reverse osmosis wastewater treatment equipment comprises a precipitation barrel used for wastewater precipitation, a drainage opening is formed in the annular barrel wall of the precipitation barrel, and a sewage outlet used for discharging precipitates is formed in the bottom wall of the precipitation barrel; the filter pressing unit is arranged in the precipitation barrel, is used for separating the wastewater from the precipitation, and comprises a filter pressing part which can move up and down and is arranged in the precipitation barrel. The filter pressing unit adopted by the invention can filter precipitates generated after wastewater treatment, the precipitates do not need to stand, the wastewater treatment efficiency is effectively improved, the treated wastewater can be discharged in real time in the filtering process, and the step of discharging the wastewater through a water pump is reduced.

The invention relates to a plunger pump system, a control method and a filter press. The plunger pump system comprises an oil storage container, an oil pump device, a plunger device and a hydraulic device. The hydraulic device comprises two hydraulic assemblies, each hydraulic assembly comprises an oil cylinder and a piston, the piston divides the oil cylinder into a rod cavity and a rodless cavity, and the rod cavities of the two hydraulic assemblies or the rodless cavities of the two hydraulic assemblies are communicated with each other. The oil pump device and the hydraulic device are connected through an oil supply pipeline, a liquid flow reversing device and a one-way valve are connected to the oil supply pipeline, the flow direction of hydraulic oil in two branch pipelines of the oil supply pipeline is controlled by the liquid flow reversing device to be periodically switched, and the flow directions of the hydraulic oil in the branch pipelines are opposite at the same moment. One end of the electric control overflow device is connected between an oil pump device and a one-way valve, the other end of the electric control overflow device is connected with an oil storage container, and the electric control overflow device is controlled to conduct an oil outlet of the oil pump device and the oil storage container during reversing of the liquid flow reversing device and discharge impact of hydraulic oil reversing on the plunger pump system.

The invention relates to the field of solid-liquid waste separation devices, in particular to a solid-liquid waste separation device for aluminum triphosphate production, which comprises a separation component, two support plates arranged on a plate-and-frame filter press, a plurality of filter plates arranged on the support plates, and a pair of extension plates arranged on the filter plates, the first electric sliding rail is arranged on the supporting plate, the switching block is arranged on the first electric sliding rail, and the plate pulling device is arranged on the switching block; the vibration component comprises a lifting assembly arranged on the plate pulling device, a guide assembly arranged on the plate pulling device, a one-way assembly arranged on the guide assembly, an impact assembly arranged on the plate pulling device and a transmission assembly arranged on the guide assembly; according to the multi-directional vibration filter plate, through multi-directional vibration, material cakes are prevented from being adhered to the filter plate, and waste of the material cakes during washing is avoided.

The invention relates to the technical field of sunset yellow filter pressing devices, in particular to a filter pressing treatment device for sunset yellow production, which comprises a filter pressing rack and a filter pressing plate slidably arranged on the filter pressing rack, pulley assemblies are arranged on the two sides of the filter pressing plate, and separation units are symmetrically arranged on the two sides of the filter pressing rack. The pulley assembly is used for driving the pulley assembly to separate the filter pressing plates. The filter press residue treatment efficiency is improved through the synergistic effect of mechanical linkage and monitoring, specifically, the combined effect of a hydraulic driving jacking mechanism and a beating assembly is adopted, and the vibration synergistic effect formed by vertical impact generated by falling back of a filter press plate and horizontal beating driven by an eccentric wheel is achieved; the problem that high-viscosity filter residues adhere to the filter pressing plate is solved; the electronic dynamometer senses the quality of residual filter residues in the jacking process of the filter pressing plate, and it is ensured that filter residue removal reaches the standard.

The present application relates to the technical field of battery materials, and provides iron phosphate having low sulfur content and a high iron-phosphorus ratio, a preparation method therefor, and a use thereof. The preparation method for the iron phosphate having low sulfur content and a high iron-phosphorus ratio comprises: providing amorphous iron phosphate; adding water and phosphoric acid into the amorphous iron phosphate for slurrying treatment, and then heating and aging to obtain an aged slurry; carrying out slurry washing and filter pressing on the aged slurry to obtain a first filter cake; adding water and a first pH regulator into the first filter cake for slurry washing to obtain a first slurry having a pH value range of 3.0-5.0, and carrying out filter pressing on the first slurry to obtain a second filter cake; and rinsing, drying and calcining the second filter cake to obtain iron phosphate having low sulfur content and a high iron-phosphorus ratio. The present application facilitates preparation of iron phosphate having low sulfur content, a high iron-phosphorus ratio, and a large specific surface area. The iron phosphate can be used for preparing lithium iron phosphate having good electrochemical performance, and the lithium iron phosphate can be further used for preparing a positive electrode sheet and a secondary battery having good electrochemical performance.

The invention relates to the technical field of chemical engineering, and particularly discloses a palladium-carbon catalytic hydrogenation reaction material treatment system, which comprises a three-dimensional workshop structure, an air-operated hoist, an air supply system, an air supply system and an air supply system, wherein the top of the three-dimensional workshop structure is provided with an elevator and a hoisting ton bag; the palladium-carbon circulating unit comprises a palladium-carbon preparation kettle, a hydrogenation reaction kettle, a decarbonization filter, a filter pressing cylinder, a sample splitter and a glove box which are connected in sequence, and the sample splitter is connected back to the palladium-carbon preparation kettle through a closed pipeline; the solid feeding unit comprises a ton bag feeder, a pneumatic valve and a spiral conveying pipe, and the tail end of the solid feeding unit is connected with a top feeding hole of the hydrogenation reaction kettle; the gas supply system comprises a hydrogen cylinder group and is connected to a gas distributor at the bottom of the hydrogenation reaction kettle through a pressure reducing valve and a flow regulating valve; through the multi-stage separation design and the safety interlocking mechanism of the palladium-carbon circulating unit, the recovery rate of the catalyst is increased, meanwhile, the pressure, temperature and stirring state are monitored in real time to trigger nitrogen purging or pressure relief, and the risks of hydrogen leakage and reaction out-of-control are reduced in combination with inert gas protection of the glove box.

The invention belongs to the technical field of preparation of ceramic materials, and provides a preparation method of a low-expansion high-strength ceramic fiber board. The preparation method comprises the following steps: mixing ceramic powder and fibers in water according to a certain proportion, and dispersing in ultrasonic equipment; adding a flocculating agent, and slowly stirring to obtain a flocculated block mass; putting the flocculated block mass into a mold for shaping, and separating the flocculated flocculated block mass from water through a filtering device; putting the mold filled with the flocculation block into a drying oven, and drying to obtain a block body consisting of loose fibers and ceramic powder; putting the mold filled with the loose blocks into silica sol for dipping, and removing redundant silica sol through a filter pressing device to obtain a ceramic fiber board; and drying and sintering the pressed ceramic fiber board to finally obtain the high-strength ceramic fiber board. The strength and hardness of the ceramic fiber board are greatly improved, and compared with a traditional silica sol fiber board dipping technology, the preparation technology effectively improves the dipping efficiency and the dipping integrity of the fiber board, and the service performance of the fiber board under the extreme condition is improved.

The invention belongs to the technical field of sewage and sludge treatment, and discloses a sedimentation tank desilting construction method for domestic sewage and coal cleaning plant sewage treatment. The problems that an existing desilting technology is low in efficiency and serious in pollution, and a pool body is damaged are solved. The method comprises the following steps: collecting data, combining a sonar technology to obtain sludge parameters of a sedimentation tank, and formulating a scheme; building a closed operation shed and mounting matched ventilation and purification equipment on a portal frame; adding a composite flocculant, and stirring to precipitate the sludge; discharging clean water; performing microwave pretreatment on the hardened sludge surface, and performing normal-pressure cleaning to form flowing slurry; pumping the flocculating constituent and the slurry, and carrying out gravity concentration and filter pressing dehydration to form a mud cake; a biological conditioner is sprayed after the sedimentation tank is cleaned, and secondary cleaning is conducted; checking and repairing the tank body and spraying a nano anti-corrosion coating; and dismounting the equipment and recovering the site after acceptance. The first-time dynamic microwave treatment is matched with normal-pressure cleaning, biochemical synergy and anti-corrosion technologies, so that the dredging efficiency is improved, the environmental pollution is reduced, and the service life of the pool body is prolonged.

The invention relates to the technical field of filter presses, in particular to a plate-and-frame filter press for sludge treatment. Comprising a filter press frame, a plurality of filter plates are arranged on the filter press frame, filter cloth is arranged on the filter plates, two supports are fixedly connected to the filter plates, the supports are slidably connected with a supporting frame, the supporting frame is slidably connected with the filter press frame, first springs are fixedly connected between the supports and the supporting frame, and second springs are fixedly connected between the supports and the supporting frame. Grooves are formed in the supports, the supporting frame is connected with limiting blocks in a sliding mode, the upper portions of the limiting blocks are in a sawtooth shape, and the limiting blocks limit movement of the corresponding supports through the grooves; and the two plate pushers are connected to the filter press frame in a sliding manner. The first spring in the supporting frame quickly pushes the bracket to move upwards, so that the filter plate quickly moves to enable a mud cake on the filter plate to fall off, the filter cloth is not subjected to fitting and scraping operation, the integrity of the surface of the filter cloth is ensured, and the service life of the filter cloth is prolonged.

The invention discloses a zinc sulfate solution impurity removal method based on a three-section countercurrent purification process, and belongs to the technical field of hydrometallurgy. Heating the zinc sulfate solution containing impurities to 60-70 DEG C in a first-section reaction tank, reacting for 30-60 minutes, adding the second-section pressure filter residue, and performing pressure filtration to obtain a first-section purified solution and a first-section pressure filter residue; the first-section purified liquid is transferred into a second-section reaction tank, zinc powder and third-section filter residues are added, the adding amount of the zinc powder is 0.8-2 times of the theoretical amount of the zinc powder needed for metal cadmium replacement, the temperature is increased to 70-80 DEG C, a reaction is conducted for 60-90 min, and second-section purified liquid and second-section filter residues are obtained after filter pressing; the second-section purified liquid is transferred into a third-section reaction tank, zinc powder is supplemented, the adding amount is 180-300 times of the theoretical amount of the zinc powder needed for metal cobalt replacement, the temperature is increased to 80-90 DEG C, a reaction is conducted for 90-120 min, and third-section purified liquid and third-section filter pressing residues are obtained after filter pressing; and returning the third-section press-filter residue to the second-section reaction tank, returning the second-section press-filter residue to the first-section reaction tank, and reversely recycling. The method has the advantages of sufficient reaction kinetics, high utilization rate of zinc powder, low zinc content in purified slag, simple process, deep impurity removal, low consumption and high efficiency.

A method for recycling various metals from sintering machine head ash comprises the steps that S1, the sintering machine head ash is subjected to pulping and magnetic separation, and tailing pulp and iron-containing concentrate are separated; s2, settling the tailing pulp to obtain bottom mud and supernate, carrying out filter pressing on the bottom mud to obtain silver-containing tailings and beneficiation water, and mixing the supernate and the beneficiation water to obtain mixed waste liquid; s3, treating the mixed waste liquid to obtain a heavy filter cake and high-salt waste water, and concentrating and separating out salt to obtain potassium sodium salt, condensed water and high-chlorine waste liquid; and S4, leaching the silver-containing tailings by using the high-chlorine waste liquid to obtain a silver-rich liquid, and carrying out an iron powder replacement reaction to obtain crude silver. Through the steps of magnetic separation, sedimentation, leaching and replacement, iron, silver, potassium, sodium and other metals are efficiently recycled, the process is simplified, and the efficiency is improved.

The present invention discloses a wet charged waste lithium battery crushing device and method, which includes a machine body, on which there are a crusher, a spraying system, a lifting conveyor, a scraper trough, a mixing tank, a buffer tank and a dosing system. The present invention uses a crusher to crush waste lithium batteries, and at the same time sprays water to cool down during the crushing process, which can prevent crushing from catching fire and exploding, and has high safety; in addition, wet crushing can be carried out while charged, and there is no need to discharge before crushing, so the pre-treatment cycle of waste lithium battery recycling can be effectively shortened, and the production efficiency is higher; in addition, the solid materials formed after the waste lithium batteries are crushed are transported to a drying furnace for subsequent recycling and reuse, while the aqueous solution enters the mixing tank and the buffer tank in sequence, and the graphite-containing precipitate enters a filter press after horizontal flow sedimentation for subsequent recycling and reuse; obviously, the present invention can effectively carry out the pre-treatment work for the recycling and reuse of waste lithium batteries.

The invention discloses a filter press for producing electrolyte of a liquid electrolytic capacitor, which comprises a base, and a box body is fixedly mounted at the top of one side of the base. After solid-containing wastewater is subjected to filter pressing, solids are discharged through the opening of the filter cartridge, the moisture content of the discharged solids is detected through the moisture content tester, the controller controls the electric telescopic rod to push the cone to move according to the moisture content of the discharged solid waste, and the size of the opening of the filter cartridge is adjusted through the cone. The extrusion force on solid containing water in the filter cartridge is increased, the moisture content of the discharged solid is reduced, the solid enters the drying box after being discharged, meanwhile, the rotating shaft drives the crushing rollers on the two sides through the transmission mechanism to crush solid waste, powder is dried through the drying mechanism, and then the moisture content of the solid waste can be further reduced; compared with an existing filter press, the filter press for electrolyte production has the advantages that the water content in solid waste after filter pressing can be effectively reduced, and the solid-liquid separation effect is improved.

The invention discloses a control method based on coal dressing intelligent filter pressing, and belongs to the technical field of coal dressing, and the control method specifically comprises the following steps: pre-grading original coal slime through an intelligent multi-stage cyclone, collecting coal slime property data of each section in real time by using online detection equipment, and transmitting the coal slime property data to an intelligent control system; through a dual optimization mechanism, coal slime properties and filter pressing grades are matched, and optimal filter pressing parameters are generated; a multi-machine cooperative control strategy is adopted to drive a three-stage filter press to operate step by step, a virtual model of the filter press is constructed through real-time working state parameters of a sensor, and an abnormal state is dynamically corrected in combination with the real-time working state parameters and a fuzzy PID algorithm; carrying out resource processing on a filter cake generated by filter pressing, and meanwhile, carrying out grading treatment on filtrate; intelligent control over the whole process of coal slime grading filter pressing is achieved, and the coal slime treatment efficiency and the resource utilization rate are improved.

The utility model relates to an efficient and environment-friendly machine-made fine sand production system which comprises a bar type feeder, a screen feed opening of the bar type feeder is connected to a linear vibrating screen I, and a screen feed opening of the bar type feeder is connected to a jaw crusher; a feed opening of the jaw crusher and an oversize feed opening of the linear vibrating screen I are connected to the intermediate crushing cone crusher, and a feed opening of the intermediate crushing cone crusher is connected to the linear vibrating screen II; screen discharge ports of the linear vibrating screen I and the linear vibrating screen II are connected to a trough type sand washer, a clean sand outlet of the trough type sand washer is connected to a rod mill, and a discharge port of the rod mill is connected to a high-frequency dewatering screen. A slurry outlet of the groove type sand washer and a slurry opening of the high-frequency dewatering screen are sequentially connected to a high-efficiency thickener and a plate-and-frame filter press. The dry-wet combined sand making process system is high in sand forming rate, quality indexes such as mud content, water content, grading and stone powder content of finished product sand can be well controlled in the sand making process, and the quality of finished product machine-made fine sand is improved.

The invention belongs to the technical field of photovoltaic wastewater treatment, and particularly relates to a resourceful treatment system and process for photovoltaic acid wastewater and alkali wastewater. The device comprises a silica gel reaction tank, a temporary storage tank, a first-stage reaction tank, a second-stage reaction tank, a third-stage reaction tank, a fourth-stage reaction tank and a sedimentation tank which are sequentially connected, a sludge outlet of the sedimentation tank is connected with an inlet of the pretreatment reaction tank through a sludge return pipeline, the sludge outlet of the sedimentation tank is also connected with an inlet of the sludge storage tank through a shunt pipe, the sludge storage tank is connected with the second filter press through a sludge pump, and a liquid outlet of the second filter press is connected with the first-stage reaction tank through a press filtrate recovery pipe. According to the invention, waste is treated by waste, and waste is turned into wealth; the consumption of the calcium agent is low, sulfuric acid is not introduced, the pH value does not need to be repeatedly adjusted, and the cost is greatly reduced.

The utility model discloses a water conservancy project sediment treatment device which comprises a filter box, the top of the filter box is rotationally connected with a rotating seat, one end, extending into the filter box, of the rotating seat is fixedly connected with a conical filter screen seat, a filter screen opening is formed in the outer surface of the conical filter screen seat, one side of the filter box is connected with a drainage pipe in a penetrating mode, and the drainage pipe is connected with a drainage pipe. The device has the beneficial effects that firstly, the conical dispersion cover can disperse and output silt, then the conical filter screen seat can centrifugally dehydrate the silt, and finally, the silt extrusion cylinder can filter and dehydrate the silt, so that the silt can be uniformly dispersed and discharged, and the silt can be uniformly dispersed and discharged. Therefore, the effect and efficiency of silt dehydration treatment can be improved.

Coffee Filter Press Apparatus

The invention provides a continuous regeneration process of saturated adsorption waste activated carbon, and relates to the technical field of adsorbent recycling. The regeneration process comprises the following steps: sequentially carrying out cleaning, sieving, impurity removal and filter pressing on waste activated carbon to obtain pretreated waste activated carbon; carrying out drying treatment on the activated carbon, and then carrying out microwave regeneration to obtain activated and regenerated activated carbon; carrying out solid-liquid separation on tail gas generated in the drying process, recovering solids, carrying out microwave regeneration, and enabling gas to enter a tail gas treatment system; the tail gas generated in the microwave regeneration process is dedusted, and dust and dedusted tail gas are separated; the dust is regenerated activated carbon, and the dust-removed tail gas enters a tail gas treatment system; the tail gas treatment system comprises a first spray tower, a secondary combustion chamber, a quench tower, a bag-type dust collector and a second spray tower. The regeneration process is wide in application range, damage to the structure of the activated carbon is small, and the saturated adsorption capacity of the activated carbon is basically unchanged after five times of adsorption-regeneration cycles.