18results about How to "Rapid solid-liquid separation" patented technology

The invention provides a preparation method of a composite catalytic material for degrading microplastics in water, and belongs to the technical field of water treatment. Comprising the following steps: S1, cleaning, drying, crushing and sieving walnut shells in sequence, S2, adding the walnut shells into a mixed solution containing Co (NO3) 2.6 H2O, La (NO3) 3.6 H2O and citric acid, stirring and mixing at room temperature, regulating the pH value of the mixed solution by adopting ammonia water until lanthanum cobaltate is precipitated on the surfaces of walnut shell powder particles, and then heating in a water bath until the moisture of the mixed solution is completely evaporated; s3, sequentially performing drying and grinding treatment on a mixture obtained by coprecipitation, and performing pyrolysis treatment to obtain the lanthanum cobaltate-biochar-based composite catalytic material. The prepared composite catalytic material is simple in preparation process, has the function of efficiently activating peroxymonosulfate, and has a good degradation effect on microplastics in water.

The application discloses a solid superacid catalyst and a preparation method and application thereof, and relates to the technical field of catalysts, and specifically discloses the preparation method of the solid superacid catalyst, which comprises the following steps: dissolving a zirconium source, a titanium source, silica sol, urea and hexadecyl trimethyl ammonium bromide in water to prepare a precursor solution; heating the precursor solution to react, wherein the pH value of the system is increased from acidity to alkalinity during the reaction, and a reaction slurry is obtained; performing hydrothermal aging treatment on the reaction slurry, and then collecting the obtained precipitate; treating the precipitate with a rare earth salt solution to obtain a rare earth modified product; immersing the rare earth modified product in a sulfuric acid solution; and performing calcination on the immersed product to obtain the solid superacid catalyst. The solid superacid catalyst provided by the application has a regular sheet-like morphology and a composite structure of silica-rare earth synergistically anchoring sulfate, can guarantee high catalytic activity, realize strong anchoring of active components and rapid separation of the catalyst, and significantly improves the recycling stability.

The invention relates to a preparation method of a polyurethane porous foam loaded CdS / MIL-101 (Fe) photosensitizer as well as a product and application of the photosensitizer, the structural advantages of an MOFs material are utilized to enhance photoinduced electrons generated by CdS to promote reduction of CO2, and the photoinduced electrons are immobilized on a porous carrier to realize rapid solid-liquid separation of a catalyst, so that the photosensitizer has a good application prospect. On the basis of the characteristics of large specific surface area, porosity, a large number of unsaturated active sites and the like of the MOFs material, CO2 can be directly captured by air. The constructed efficient photocatalytic CO2 reaction system can effectively promote charge transfer of a composite system interface, the CdS electron mass transfer process is improved, and the CO2 photoreduction capacity is further improved. Meanwhile, the active component CdS / MIL-101 (Fe) is loaded on the porous foam carrier through simple in-situ immobilization, so that the loading rate of the composite material can be further improved, and the photosynthetic carbon sequestration rate is accelerated.

The invention belongs to the technical field of polyester recovery, and relates to a method for preparing BHET by catalyzing ethylene glycol alcoholysis of PET. According to the method, gamma-Fe2O3 (at) meso-SiO2-DBU is adopted as a catalyst, the gamma-Fe2O3 (at) meso-SiO2-DBU is composed of gamma-Fe2O3 (at) meso-SiO2 and DBU, the gamma-Fe2O3 (at) meso-SiO2 is of a core-shell structure, the core is gamma-Fe2O3, the shell is composed of meso-SiO2, the DBU and the shell form ion pairs through electrostatic attraction, and the ion pairs are enriched in mesopores of the meso-SiO2. The problem that the yield of BHET is low in an existing magnetic separation heterogeneous catalysis system is solved, the conversion rate of PET and the yield of BHET are effectively increased, and the catalyst is stable in structure and lasting in catalytic activity, can be magnetically separated and recycled and adapts to the strict reaction conditions for catalyzing ethylene glycol to depolymerize PET.

The invention relates to the technical field of waste liquid treatment, in particular to a self-adaptive pH amphoteric polymer-calcium salt compounded bentonite slurry rapid sedimentation treatment method. According to the method, a calcium salt working solution, a buffer working solution, an amphoteric polymer working solution and a functionalized calcium carbonate micro-powder dispersion solution are added in stages, and the stirring speed and time are accurately controlled, so that rapid sedimentation of the slurry is realized. The amphoteric polymer is formed by copolymerizing a plurality of monomers and has wide pH adaptability; the functionalized calcium carbonate micro powder is used as a weighting carrier to enhance the floc density. The method solves the problems of slow sedimentation, high supernatant turbidity and poor adaptability to water quality fluctuation in the traditional method, has the advantages of high sedimentation speed and high supernatant clarity, can be directly reused, and is suitable for bentonite slurry treatment in the fields of electric power engineering and the like.

The utility model relates to the technical field of pseudo-boehmite production, and discloses a washing and separating device for pseudo-boehmite production, which comprises a base, two sides of the upper surface of the base are fixedly connected with supports, the surfaces of the supports are provided with through grooves, the inner walls of the through grooves are connected with sliding blocks in a sliding manner, and the sliding blocks are connected with the through grooves in a sliding manner. And the outer wall of one sliding block is fixedly connected with a driving motor. The driving motor is started to drive the rotating shaft I to rotate, so that the rotating shaft drives the stirring mechanism to stir materials in the separation barrel, the materials can be fully washed, subjected to impurity removal and subjected to sewage discharge, the vibration motor is started to drive the convex plate to rotate, then the connecting rod drives the separation barrel to vibrate, and the separation barrel rotates while vibrating; according to the solid-liquid separation device, the stirring mechanism is used for stirring the materials, so that the materials can be separated more thoroughly, washing and separation can be integrated, solid-liquid separation can be carried out quickly, and the working efficiency is improved.

The utility model provides a food detection waste separating device, which relates to the technical field of food detection and comprises a fixed outer cylinder, a driving motor is mounted at the bottom of the rear side of the fixed outer cylinder, a guide plate is mounted at the bottom of the inner side of the fixed outer cylinder, and the top of the guide plate is of an inclined structure; the outer side of the fixed outer cylinder is provided with a sealing shell opposite to the fixed outer cylinder in position. A traction plate is slidably installed on the side face of the sealing shell in a penetrating mode. A flow guide cover is further mounted at the top of the fixed outer cylinder; and rotating shafts are rotationally mounted on the two sides of the flow guide cover. Multiple wastes are separated through multiple partition plates, solid-liquid separation of the wastes is rapidly carried out, power consumption of a servo motor is reduced, solid-liquid separation of the wastes is more sufficient, the treatment quality of the wastes is guaranteed, and the problems that multiple wastes are accumulated in a separation device, the rotating speed is affected, and the waste is wasted are solved. And liquid still remains on the internal waste.

The invention relates to a preparation method of a supported bimetallic (Zn, Fe)-TCPP photosensitive catalyst as well as a product and application of the supported bimetallic (Zn, Fe)-TCPP photosensitive catalyst, a metalloporphyrin ligand is utilized to regulate and control a microenvironment of MOF and a synergistic effect between a conjugated ligand of the MOF and metal centers Zn and Fe, so that photocurrent response is enhanced, and photo-induced electron-hole separation and transfer are accelerated. In addition, the synergistic effect between the double metals Zn and Fe can further promote the transfer of charges, and is beneficial to the improvement of the photocatalytic ability and the structural stability of the material. On the basis, the catalyst is further immobilized on a porous carrier, so that the contact area with pollutants can be increased, meanwhile, the supported catalyst can be quickly separated from water and is convenient to recycle, the problem that a powder catalyst is difficult to recycle and easily causes secondary pollution to a water body is avoided, and a product derived from the preparation technology has a large-scale application value.

The utility model discloses a crude silver electrolysis waste liquid recovery device which comprises a recovery box, the bottom face of the recovery box is symmetrically and fixedly connected with a supporting base, the top face of the recovery box is provided with a sealing groove, the top end of the recovery box is connected with a movable cover in a clamped mode, and the inner wall of the movable cover and the outer wall of the top end of the recovery box are respectively provided with a threaded structure and are clamped with each other. The bottom surface of the movable cover is fixedly connected with a sealing ring, the sealing ring is clamped in the sealing groove, the outer wall of the movable cover is symmetrically and fixedly connected with handles, the bottom end of the recycling box is provided with a liquid outlet, the outer end of the liquid outlet is fixedly connected with a fixing pipe, and the fixing pipe is clamped in the filtering assembly. The filtering assembly comprises a sealing cover, and the sealing cover is connected to the outer portion of the fixing pipe in a clamped mode. According to the utility model, the filtering assembly can quickly carry out solid-liquid separation on solid wastes precipitated in waste liquid, the separation efficiency is improved, and the filtering assembly can be detached from the equipment, so that the filter screen is convenient to clean, and blockage is avoided.

A high-efficiency micro-sand circulating sedimentation device relates to the field of wastewater treatment technology. It comprises a flocculation reaction system, a maturation reaction zone, a high-efficiency settler, a flocculant dosing device, and a micro-sand circulating system. The high-efficiency settler houses the flocculation reaction system, which includes an inner tank with a rotating stirring shaft inside. The upper part of the flocculation reaction system is a mixing reaction zone. A wastewater pipe is connected to the outside of the inner tank, and a static mixer and a check valve are installed at the upper end of the wastewater pipe. Based on traditional flocculation sedimentation tank theory, micro-sand is added to accelerate floc agglomeration and sedimentation, shortening the residence time in the sedimentation tank and achieving rapid solid-liquid separation. This invention features an integrated design, saving space and energy. The device consists of a flocculation reaction system, a maturation reaction zone, a high-efficiency settler, a flocculant dosing device, a polymer coagulant aid dosing device, a cyclone sludge separation device, a micro-sand circulating replenishment device, and a PLC electrical control system.

A kind of calcified biomass red mud quick solid-liquid separation device belongs to the field of solid-liquid separation after bauxite dissolution, including: stirring shaft, ore pulp feeding pipeline, venturi device, settling tank body, clear liquid overflow tank, spiral flow guide bucket, electromagnetic induction coil, rake, underflow outlet.Ore pulp feeding pipeline is arranged at the top of settling tank body, liquid inlet is connected with the horizontal direction of spiral flow guide bucket tangential, ore pulp feeding pipeline is additionally provided with venturi device, and multiple flocculating agent adding ports are installed at the narrow place of venturi device;Spiral flow guide bucket is arranged in the settling tank body and is fixed at the upper part of the settling tank, and the inside of spiral flow guide bucket is provided with spiral downward lines;Electromagnetic induction coil is additionally provided outside spiral flow guide bucket;Stirring shaft is deeply into the settling tank body, stirring shaft bottom is connected with rake by connecting rod, and red mud leaves the settling tank from underflow outlet;Clear liquid is discharged from the top of settling tank body by clear liquid overflow tank;The device realizes the rapid solid-liquid separation of bauxite dissolution ore pulp.

This invention discloses a method for recycling high-salt dyeing and finishing wastewater, belonging to the field of dyeing wastewater treatment technology. Addressing the problems of traditional coagulants' easy failure in high-salt environments, difficulty in solid-liquid separation, and inability to regenerate and recycle, this invention uses a magnetic composite coagulant for coagulation and sedimentation. Rapid solid-liquid separation is achieved through an external magnetic field, and the separated magnetic composite coagulant is recycled after alternating water washing and desorption. The wastewater is subsequently treated by oxidation, evaporation and crystallization to recover salts, and activated carbon adsorption for deep treatment before being reused in production. The magnetic composite coagulant has a core-shell structure and a temperature-sensitive polymer graft layer, possessing high salt resistance, magnetic response, and temperature-sensitive desorption characteristics. This invention achieves efficient flocculation, rapid magnetic separation, and intelligent desorption and regeneration in high-salt environments, significantly reducing reagent consumption and operating costs. The effluent quality meets the requirements of the "Water Quality Standard for Reclaimed Water in Textile Dyeing and Finishing Industry".

The utility model discloses a kind of nano zinc oxide washing equipment, including reaction kettle and four supporting legs, the lower end of the reaction kettle is evenly fixed with four supporting legs, the inner wall of the water baffle is communicated with water suction pipe, the outside end of the water suction pipe is communicated with one end of negative pressure pump and fixed in the reaction kettle, the other end of the negative pressure pump is fixed with drain pipe, hollow shaft is driven by motor, and stirring member in washing structure is rotated by hollow shaft, raw materials in washing work are fully stirred, while when once washing work is completed, the position of raw materials can be lifted, raw materials are separated from washing liquid, and once washing is completed after washing liquid is extracted by the cooperation of negative pressure pump and water suction pipe, and is discharged to suitable position by drain pipe, without long time standing stratification, it can be quickly solid-liquid separation, and next washing work is carried out, convenient to use, and it is strong in practicality.

The present invention discloses the preparation and application of a zeolite immobilized hydrogel beads, belonging to the technical field of zeolite immobilization. The preparation method of the present invention is: first prepare EDTA-2Na modified natural micron zeolite, grind and sieve, then add polyvinyl alcohol and sodium alginate, stir and mix to obtain a modified zeolite-polyvinyl alcohol / sodium alginate mixed solution, dissolve at high temperature, and add glutaraldehyde after uniform dispersion, continue to stir evenly to obtain a mixed solution containing glutaraldehyde, use a peristaltic pump to drop the mixed solution into a high-temperature calcium chloride solution, filter, and obtain immobilized particles I; finally, immerse the solidified particles I in a high-temperature acidic sodium sulfate solution and fix and wash again to obtain zeolite immobilized beads. The present invention embeds the zeolite into the hydrogel beads by an embedding method to achieve the immobilization of the zeolite. The hydrogel-shaped zeolite can prevent the mudding phenomenon after the zeolite is added, and it is easier to separate the zeolite from water.

The invention discloses 3D printing hybrid dual-network hydrogel as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out dual-crosslinking reaction on a hydrogel precursor solution with high water content under ultraviolet irradiation to obtain the hybrid dual-network hydrogel, the precursor solution consists of an acrylamide monomer, acrylic acid, a cross-linking agent, a photoinitiator, chitosan and an inorganic zirconium compound; particularly, the precursor solution is combined with a 3D printing technology to carry out a photocuring cross-linking reaction, and the 3D printing hybrid dual-network hydrogel is prepared by a one-step method; the technical scheme provided by the invention has the characteristics of simple method and universality, and the prepared hybrid dual-network hydrogel has good mechanical properties, high transparency and high conductivity, can be subjected to rapid 3D printing, can be applied to the fields of sensors and actuators, and has wide application prospects. And a foundation is laid for efficient manufacturing of customized flexible electronic devices and intelligent flexible robots.

The utility model relates to the technical field of power devices, in particular to a sewage treatment power device. The technical problems that in the using process of a power device, most of the power devices are driven by a single motor, so that multiple efficient power structures cannot be adopted for conveying sewage, and the sewage cannot be efficiently mixed, stirred and filtered are solved. According to the technical scheme, the sewage treatment power device comprises sewage treatment equipment, a supporting frame plate, a conveying assembly, a power assembly and a guide discharging assembly. According to the sewage treatment device, sewage can be rapidly controlled to be conveyed to a high position or a far position from a low position through the conveying assembly, the sewage can be rapidly driven to be mixed and stirred through the power assembly, solid-liquid separation can be rapidly conducted on the sewage, and filtered sludge and water can be rapidly separated and discharged through the guiding discharging assembly; the treatment speed of the sewage treatment equipment is further improved.

The utility model relates to the technical field of filtering devices, in particular to a coconut milk multistage filtering device which comprises a device cylinder and a cylinder cover arranged at the top of the device cylinder, and a conveying pipe used for conveying coconut milk is arranged above the device cylinder. The filtering assembly comprises a rotating pipe and a fine filtering cylinder, the rotating pipe is rotationally arranged on the upper surface of the cylinder cover and extends into the device cylinder, the fine filtering cylinder is fixedly arranged on the outer surface of the bottom end of the rotating pipe, a first-stage filter screen ring and a second-stage filter screen ring are fixedly arranged on the inner wall of the fine filtering cylinder from inside to outside, and the bottom end of the fine filtering cylinder is in threaded connection with a base plate. According to the coconut milk filtering device, the filtering assembly is arranged, so that when the device is used for filtering coconut milk, the aims of performing multi-stage filtering on the coconut milk and realizing rapid solid-liquid separation can be fulfilled, the filtered coconut milk is effectively ensured not to contain coconut residues, and the quality and the purity of the coconut milk are ensured; therefore, the defect of low filtering rate in the prior art is effectively overcome.

The invention relates to a method for preparing vinylene carbonate and a preparation device thereof. The method comprises the following steps: S1, mixing vinylene carbonate and dimethyl carbonate in a mixing kettle at a mass volume ratio of 42kg-48kg:100L under a nitrogen environment to obtain a mixed solution; S2, adding 2,4-di-tert-butylphenol into a reaction kettle, adding the mixed solution obtained in S1 into the reaction kettle at a corresponding flow rate, slowly adding triethylamine into the reaction kettle to participate in the reaction, controlling the mass volume ratio of vinylene carbonate and triethylamine to be 0.75kg-0.80kg:1L, and controlling the temperature to be 40-55 DEG C; S3, heating to 55-70 DEG C, continuously reacting for 16-20h, and performing solid-liquid separation after the reaction is completed to obtain a vinylene carbonate crude solution; and S4, distilling and purifying the vinylene carbonate crude solution to obtain high-purity vinylene carbonate.