55results about How to "Precipitate thoroughly" patented technology

The invention provides a purification method of wastewater containing heavy metal and arsenic. The purification method mainly comprises the process steps as follows: adding sulfuric acid or soluble sulfate into the wastewater to supplement sulfate ions; then adding a reductant to reduce high-valence manganese, chromium and vanadium in the wastewater; adding calcium carbonate to pre-adjust the pH value of the solution; adding lime for neutralization, precipitating and separating out heavy metals and harmful elements such as arsenic from the wastewater, and packaging the precipitates in gypsum slag, discharging or reusing filtered liquid after satisfying standards, and recycling filter residue. The purification method provided by the invention has the advantages of being simple in process, good in purification effect, low in cost and environment-friendly.

The invention discloses a method for producing high-purity antimonous oxide by treating antimony sulfide concentrate to improve product whiteness, which comprises the following steps of: performing leaching and primary reduction, rising the temperature of solution, introducing chlorine for oxidation, performing precipitation for at least 2 hours, performing secondary reduction, adding copper sulfate into the secondary reduction solution for reaction, filtering the reaction solution, adding water for hydrolysis, adding a transformation agent for transformation, and drying the transformed solution to obtain the product with the whiteness of 93 to 95.

The invention discloses a sewage treatment device for municipal engineering, and belongs to the technical field of municipal wastewater engineering. The sewage treatment device comprises a shell, a charging tube, a gear, a filtering plate, a rack, a first single-direction valve, a sewage filtering room, a cover plate, a handle, a suction-pipe, a medicament charging hole, a stirring motor, a stirring shaft, a stirring device, a medicament charging-precipitating room, a second single-direction valve, an ultraviolet sterilizing lamp, an active carbon adsorption device, a suction fan, a water discharging tube and a natural precipitating room, wherein the sewage filtering room, the medicament charging-precipitating room and the natural precipitating room are arranged inside the shell from left to right; the stirring motor is arranged in the center of a top end of the medicament charging-precipitating room; an output shaft of the stirring motor is connected with the stirring shaft. The sewage treatment device is reasonable in structure, the sewage filtering room, the medicine precipitating room and the natural precipitating room are provided, the sewage can precipitate fully, the sewage treatment effect is more remarkable, discharge of odor in the sewage can be lowered effectively, and the quality of air surrounding the sewage treatment device is ensured.

The invention discloses a preparing and feeding method for chlamys farreri larva baits, and belongs to the field of aquaculture. In a chlamys farreri seedling growing process, the problems of tender physique of seedlings and low survival rate which are caused by inadequate baits exist. The technical key points of the preparing and feeding method are that four ocean microalgaes are aquacultured by magnetized water and blue light so as to prepare algae paste which is fed to chlamys farreri larva seedlings; the nutrition is comprehensive, the chlamys farreri larva grows fast and is strong in physique and high in survival rate; the microalgaes are cultured by the magnetized water, so that microalgae bodies grow fast and are pure in color; the microalgaes are cultured by a water storage tank, so that the cleaning is convenient, the cost is low, damage caused by collision seldom occurs, repeated use is realized, and pollution is basically avoided; with the adoption of blue light cultivation, the EPA and DHA contents in the microalgaes are high; the algae liquid is prepared into the algae paste for feeding, so that the feeding amount is easy to control, and a water body cannot be polluted; the baits can be produced all the year round, the occupied space is small, and the transportation and the storage are facilitated.

The invention discloses a system and method for repairing organic contaminated soil through sludge microwave gasification residues in a targeting mode, and belongs to the technical field of contaminated soil repairing. The system comprises a first stirring and mixing device, a gasification reactor, a second stirring and mixing device, a desorption reactor and a screening device. Dewatered sludge is pyrolyzed and carbonized in the gasification reactor to form sludge carbon, through the characteristic of multi-pore adsorption and absorption of microwave assisted heating, the desorption of pollutants in the soil can be effectively promoted in the process of mixing the sludge with the organic contaminated soil, and organic matter in the soil is adsorbed; and in the subsequent microwave heating process of the desorption reactor, the organic matter adsorbed on the sludge carbon is volatilized in a gas form, and the residual sludge carbon returns to the first stirring and mixing device and the second stirring and mixing device to participate in sludge carbonization and organic matter adsorption. Sludge treatment and organic contaminated soil treatment are combined to achieve the purpose of treating waste with waste, the sludge carbon can be recycled after adsorption and desorption, and the cost is lowered.

The invention discloses a sewage precipitation pool of a swinging rod dispersion precipitating agent. The sewage precipitation pool comprises a rectangular sewage precipitation pool, a swinging rod dispersion device and a dirt cleaning device, wherein a water inlet groove is formed in the upper part of the left end surface of the sewage precipitation pool; a water inlet is formed in the left sidewall of the sewage precipitation pool; a water overflow groove is formed in the upper part of the right end surface of the sewage precipitation pool; a water overflow opening is formed in the right side wall of the sewage precipitation pool; a plurality of downwards recessed isosceles trapezoid-shaped sludge hoppers with the wider upper side and the narrower lower side are uniformly formed in theleft and right direction of the upper end surface of the lower side wall of the sewage precipitation pool; a sludge falling groove is formed in the lower part of the lower side wall of the sewage precipitation pool; the sludge hoppers and the sludge falling groove are communicated through the material falling groove; swinging rods are arranged at the upper end of the sewage precipitation pool in ascattered way; the dirt cleaning device comprises a scarping plate and a sealing plate; the scraping plate is arranged in the sludge hopper in a front and back sliding way; the sealing plate can be used for opening and closing the material falling groove. The sewage precipitation pool has the advantages that the precipitating agents can be uniformly dispersed; the precipitation effect is good; through the combination of the scraping plate and water washing, the dirt cleaning effect is good.

The invention relates to a grain and oil purification and extraction device. The device comprises s base, a fixed ring is arranged on the upper portion of the base, the fixed ring is fixedly connectedwith the base through a support, a movable ring is arranged in the fixed ring, the middles of the front side and the rear side of the movable ring are connected with the inner ends of cross shafts through bearings respectively, the outer ends of the cross shafts are fixedly connected with the fixed ring separately, a damping bearing is fixedly installed on the periphery of the cross shaft on thefront side, an annular gear is fixedly installed on the periphery of the damping bearing, a short shaft is arranged over the cross shafts, a shaft base is installed at the front end of the periphery of the short shaft through a bearing, the shaft base is fixedly connected with the movable ring through a support rod, a gear is fixedly installed at the rear end of the short shaft, and the gear is inmeshing cooperation with the annular gear. Accordingly, the structure is simple, a swinging oil pot can rotate continuously, shaking of the oil pot in all directions is achieved, the sesame oil shaking efficiency is improved, the sesame oil in paste is separated out more thoroughly, and meanwhile the oil pot shaking amplitude can be controlled; requirements of sesame oil shaking in different stages are met, the market requirements can be met, and the device is suitable for popularization.

The invention discloses an ultrasonic non-melt metal argon arc welding technology and device. According to the technology, during non-melt metal argon arc welding, ultrasonic vibration is conducted on a molten bath and base metal near a weld joint in real time to enable molten metal tissue to be dense and uniform, refinement of metal grains at the position of the weld joint is achieved, evolution of gas in the molten bath is accelerated, and welding quality is improved. The device comprises an energy converter and an amplitude-change pole, wherein the energy converter is fixedly connected to one end of the amplitude-change pole, an electrode cavity is formed in the other end of the amplitude-change pole, an electrode is arranged in the electrode cavity, an air inlet and a wire inlet are formed in one side face of the amplitude-change pole, the air inlet is communicated with the electrode cavity, a wire is connected to the electrode and is led out through the wire inlet, and a welding wire groove and an exhaust groove are formed in the lower end face of the amplitude-change pole. By the adoption of the ultrasonic non-melt melt argon arc welding technology and device, grains at the position of the weld joint are better refined, metal tissue is denser, evolution of gas in the weld joint is more complete, welding deformation is reduced, the fatigue strength of a welded joint is improved, the fatigue life of the welded joint is prolonged, and the welding quality is guaranteed.

The invention relates to the technical field of impurity removal auxiliary devices for river sewage and in particular relates to an impurity removal device for river sewage. The impurity removal device comprises a working box and four groups of brackets, wherein the working box is internally provided with a working cavity; the right side of the top end of the working box is communicated with a feeding pipe; the lower side of the left side of the working box is communicated with a discharging pipe; a discharging valve is arranged on the discharging pipe; a filtering screen is arranged in the working box; the impurity removal device further comprises a push plate, a push rod, a push block and a scraping plate; a first sealing ring sleeves the outer side of the push rod; the lower side of theright side of the working box is communicated with a gas feeding pipe; the device further comprises a supporting platform, an adsorption box and a communication pipe; an adsorption cavity is arrangedin the adsorption box; the top end of the adsorption box is communicated with a replacement opening; a cover plate is arranged at the replacement opening; adsorption carbon is placed in the adsorption cavity; the upper side of a left side wall of the adsorption box is communicated with an exhausting fan; and the device further comprises two groups of supporting columns, a supporting plate, a motor, a first connection rod, a transmission shaft and stirring blades and a second sealing ring sleeves the outer side of the transmission shaft.

The invention relates to the technical field of sewage treatment, and discloses an energy-saving and environment-friendly industrial sewage oxidation-reduction device, which comprises a shell, wherein a lamp bead is fixedly connected to the interior of the shell, a photosensitive assembly is fixedly connected to the interior of the shell, a rotating disc is fixedly connected to the interior of the shell, a long rod is movably connected to the exterior of the rotating disc, the exterior of the long rod is movably connected with a sliding block, and the exterior of the sliding block is movably connected with a push rod. According to the invention, through the interaction of all structures of the device, heavy metals in sewage can be better precipitated after wastewater enters the device, the reaction between a chemical reagent and the sewage is more sufficient under the action of a stirring rod, the reaction stage can be detected under the action of a detection assembly, and more reaction reagents are injected into the sewage in time, so that the effects of automatically detecting the sewage treatment degree and automatically adding the reaction reagents to the sewage are achieved.

The invention discloses an ultrasonic consumable electrode argon arc welding process and device. According to the ultrasonic consumable electrode argon arc welding process, ultrasonic vibration is carried out on a weld pool and parent metal around a welding joint in the consumable electrode argon arc welding process, molten metal is made to be compact and uniform in texture, metal grains at the welding joint are refined, gas separation of the weld pool is accelerated, welding stress and welding deformation are reduced, the fatigue strength of a welding connector is improved, the fatigue life is prolonged, and therefore the welding quality is largely improved. The ultrasonic consumable electrode argon arc welding device comprises an energy converter and an amplitude-change pole, wherein the energy converter is fixedly connected with one end of the amplitude-change pole, the other end of the amplitude-change pole is provided with an electrode cavity, a conductive nozzle is arranged in the electrode cavity, an electrode inlet, an air inlet and a wire port are formed in the lateral surface of the amplitude-change pole, the air inlet is communicated with the electrode cavity, and the conductive nozzle is connected with a wire. The grains at the welding joint are more refined, the metal is more compact in texture, gas separation in the welding joint is more thorough, welding deformation is reduced, the fatigue strength of the welding connector is improved, the fatigue life is prolonged, and welding quality is guaranteed.

The invention discloses a preparation method of ecological razor clam feed and belongs to the field of aquaculture. The quality and the quantity of the feed are bottleneck factors restricting high yield and stable yield of razor clams in the culture process of the razor clams. According to a traditional razor clam feed preparation method, equipment is complicated, feed is prone to rot and go bad, ingredients are monotonous, nutrition is incomplete, the preparation process is complicated, and the cost is higher. According to the razor clam feed prepared with the method, the ecological razor clam feed is prepared by mixing five kinds of marine microalgae serving as main materials and auxiliary materials comprising the fish meal, blood meal, cow manure, fowl manure, chlorella powder, beer yeast, silkworm chrysalis meal, peanut cakes, tenebrio molitor powder and earthworm powder, has complete nutrition, facilitates quick growth and development of the razor clams, is seldom lost after scattered in water and can be conveniently scattered into water for feeding, raw materials are easy to obtain, the preparation method and equipment are simple, and the cost is low.

The invention relates to the field of sewage treatment, and specifically discloses a nano-magnetic integrated sewage treatment equipment, which includes a housing, side plates are fixedly connected to both sides of the top of the housing, and a beam is fixedly connected between the two side plates. The tops of the side plates are fixedly connected with L-shaped rods, and a feeding hopper with a cover plate is fixedly connected between the two L-shaped rods. A cone is connected, the side of the cone is fixedly connected with a discharge pipe, and the discharge pipe communicates with the inside of the shell, and the top side of the shell is fixedly connected with a water inlet provided with a flow control valve. The water inlet runs through the shell, and the water inlet is eccentrically connected with a fixed column, and the bottom end of the fixed column is provided with a plurality of water outlet holes. The device effectively prevents the water flow from arousing the sediment at the bottom of the sedimentation tank, prevents the sediment after nano-magnetic adsorption from blocking the sewage outlet, and has the advantage of making full use of the nano-magnetism.

The invention discloses a method of producing a high protein solid drink by utilizing bean vermicelli wastewater. The method comprises the following steps of: (1) carrying out acid precipitation, that is to say, adding lactic acid into bean vermicelli production wastewater, standing and precipitating, removing supernate, and collecting lower layer of faint yellow size; (2) centrifuging and separating; (3) carrying out size mixing and neutralizing; (4) carrying out enzymatic hydrolysis; (5) deactivating enzyme and sterilizing; (6) dosing; (7) heating and homogenizing; (8) spraying and drying; and (9) pelletizing and refining, that is to say, spraying and drying to obtain a powdery product, and pelletizing and screening in a dry environment to obtain the high protein solid drink with uniform particles, a protein content of more than 12% and a moisture content of less than 5%. The high protein solid drink, prepared by the invention, has good solubility, smooth taste and strong smell. According to the method, provided by the invention, after the protein is directly extracted by the bean vermicelli wastewater, the high protein solid drink is processed, the process flow is simple, the comprehensive utilization rate of bean raw materials can be greatly improved, and the economic benefit of an enterprise is increased.