30results about How to "Improve air flotation efficiency" patented technology

The invention relates to a copolymerization flotation-sedimentation tank. The copolymerization flotation-sedimentation tank comprises a multi-channel folded plate copolymerization flocculation basin, a flotation-sedimentation tank and an air dissolving system, wherein the multi-channel folded plate copolymerization flocculation basin is used for realizing the coagulation and the copolymerization of flocculates and microbubbles; the flotation-sedimentation tank is connected to the rear end of the multi-channel folded plate copolymerization flocculation basin and is used for separating foamed flocculates from water flow and precipitating settleable flocculates which cannot float; and the air dissolving system is connected with a water outlet end of the flotation-sedimentation tank and is connected with the multi-channel folded plate copolymerization flocculation basin and the flotation-sedimentation tank to supply high-pressure backflow gas dissolved water to the multi-channel folded plate copolymerization flocculation basin and the flotation-sedimentation tank. According to the copolymerization flotation-sedimentation tank, the high-pressure backflow gas dissolved water is fed for three times, by virtue of organic combination with a flocculation process, a microbubble and flocculate copolymerized environment is created, and the produced foamed flocculates are stable and are not easily separated, so that the problems that the adhesion efficiency of particles is low, the trapping effect is not ideal, the adhesion of the foamed flocculates is instable, and the like of a traditional dissolved air flotation process are solved, and the coagulation, air floatation and sedimentation processes are organically combined and integrated; and the copolymerization flotation-sedimentation tank has prominent superiority in the treatment of water quality in high-algae, low-turbidity and burst high-turbidity reservoirs.

The invention relates to an ozone oxidation-air floatation combined treatment system and a process. The system comprises a reaction tank, a gas liquid mixer, a catalyst adding device and a whirl stream air floating tank. Ozone-containing gas and sewage are mixed into a gas-liquid mixture containing micro bubbles by the gas liquid mixer and then fed into the reaction tank. The reaction tank is provided with at least one ultrasonic wave cavitation device. The catalyst adding device is used for feeding a catalyst, ozone and the sewage into the reaction tank together. Then a catalytic oxidation reaction is performed under the action of ultrasonic wave cavitation. A stream guide pipe is vertically disposed in the center of the whirl stream air floating tank. The upper end of the stream guide pipe is open, and the lower end of the stream guide pipe penetrates the bottom of the whirl stream air floating tank. The bottom of the whirl stream air floating tank is also provided with a sewage outlet. The bottom of the stream guide pipe is provided with vortex plates. The whirl stream air floating tank is communicated with the reaction tank, and used for allowing the gas liquid mixture reacted in the reaction tank to react continuously under the whirl stream function and to be subjected to floatation, washing and separation treatment. The contact probability of the micro bubbles generated by the system with contaminants is large, the reaction is more thorough, the ozone utilization rate is high, retention time is short, and contaminant removing effects are good.

The invention provides a Coagglomeration air-float water quality purification process, belonging to water pollution control engineering. This technics is consisted of dissolved-air outgas system, drug adding system, reaction separation system. The dissolved-air adopting solution-air mixing pump and solution-air knockout drum pressurize the part yielding water of floatation pond to dissolvedair, injecting to enter from the bottom of floatation pond; the coagulating agent is imbibed before sewage pump, the mixing course was finished in pipeline and sewage pump, the mixed sewage affluxing from the head of floatation pond; the best distance of dissolved-air water and sewage is about 10cm. the adhesion of air bubble and floc is finished in reaction contact zone of floatation pond, the coagulant aid is added from dissolved-air system, the copolymer of air bubble and floc floating upward to the head of floatation pond from knock-out zone of floatation pond and scraped to slag groove by scum machine. This invention can used to purify nature water, colloid and suspended matter which is produced from the course of production and life, part soluble substance such as azote and phosphate and so on which can lead to eutrophication.

A jet method and apparatus for dissolving air in the circulated water is characterized by that the jetter in the path of circulated water, which has water pressurizing tube and water sucking tube, isused to dissolve air in the water by sucking and cutting actions, and a water pump is used to stir and mixthe water with air for dissolving air in water further. Its advantages are simple structure, high dissolving effect, and less energy consumption.

The invention provides a method and a device for removing oil by utilizing cold air flotation, the method comprises the following steps: cold air prepared by refrigeration equipment is divided into two paths, the first path of cold air is led to a dissolved air water generator containing production water, and the second path of cold air is led to an air flotation tank through a microbubble generator; wherein dissolved oil is separated out from the production water under the action of the first path of cold air, and the first path of cold air is dissolved into the production water under high pressure and released into the air floatation tank through a pressure reducing valve; the second path of cold air generates low-temperature micro-bubbles in the micro-bubble generator, and the low-temperature micro-bubbles enter the air floatation tank to further separate out dissolved oil in the production water; the dissolved-state oil is adhered to the microbubbles, rises and is discharged through the air floatation tank; and the treated production water is discharged from the lower part of the air floatation tank. The device comprises refrigeration equipment, a dissolved air water generatorand a micro-bubble generator which are respectively connected with the refrigeration equipment, and an air floatation tank which is respectively connected with the dissolved air water generator and the micro-bubble generator. The device is simple in structure, economical, efficient and high in adaptability.

The invention provides a device and method for recycling and treating drilling and completion waste liquid through ultrasonic technology. The device comprises a shell, and is characterized in that an inclined baffle is arranged in the shell and divides the shell into a cavitation air flotation area and a photocatalytic oxidation area; a slag scraping plate, a slag discharging groove and a slag discharging pipe are arranged at the top of the shell; an inclined plate filter and a water outlet pipe are arranged at the lower part of the photocatalytic oxidation area; and a photocatalytic partition plate and an ultraviolet light tube are arranged in the photocatalytic oxidation area. The device has the advantages that a hydrodynamic cavitation device and an ultrasonic cavitation device are integrated, so that the problem of instability of tiny bubbles generated by an air flotation device is solved. According to the device and method, hydrodynamic cavitation, ultrasonic wave, ozone catalysis and photocatalysis technologies are combined, and ozone is promoted to be quickly decomposed to generate more oxidized free radicals, so that the degradation rate of organic matters is increased, meanwhile, the ozone adding amount is reduced, the waste liquid treatment operation cost is reduced, the treatment process procedure is optimized, and the device and method have important significance on construction of ecological oil fields.

The invention discloses an ultra-extensive micro-bubble air-flotation machine which is characterized in that a dross collecting tank is mounted on the top of a tank body; a dross discharge tube is arranged at the bottom of one side of the dross collecting tank; a sludge discharge hole is formed in the bottom of the tank body; a group of inverted conical flow guide water collection pieces are arranged in the middle inside the tank body; the bottoms of the inverted conical flow guide water collection pieces are connected with a high-level tank which is arranged at the upper part of one side of the tank body through a U-shaped clean water pipeline; an air dissolving device is arranged on the other side of the tank body; the air dissolving device is connected with a water distributor through a pipeline; the water distributor is arranged at the bottom inside the tank body. Due to the components, the ultra-extensive micro-bubble air-flotation machine is capable of dissolving air into sewage directly, the dross can be discharged by virtue of self-flowing, the sludge at the bottom of the tank body can be discharged automatically, and thus both the power is saved and the processing amount is increased. The ultra-extensive micro-bubble air-flotation machine is small in occupied space, simple to operate and debug and high in air-flotation efficiency.

The invention relates to the technical field of sewage treatment, in particular to micro-power flotation separation equipment, wherein micro-power gas-liquid mixing is achieved by utilizing a Venturi principle, a large amount of micro-bubbles are generated through efficient jet injection, an oil liquid is aerated into floating oil foam floating on the upper layer of a mixed turbid liquid, the mixed turbid liquid is blocked by a box body high partition plate and a U-shaped oil collecting tank to form loopback flow in a circulating treatment process of the mixed turbid liquid so as to increase the air flotation treatment time of the mixed turbid liquid and improve the air flotation efficiency, and a slag collecting hopper at the bottom of the box body can rapidly precipitate slag and mud and discharge the slag and mud out of a box body through a bottom slag discharging opening so as to facilitate slag and sludge separation. The equipment comprises a supporting base, a box body, a mixed turbid liquid injection port, a U-shaped oil collecting tank, a box body low partition plate, a bottom slag collecting hopper, an oil collecting manifold, a box body high partition plate, a slag mud diaphragm pump, an oil liquid diaphragm pump, a slag mud vibration motor, a clear water centrifugal pump, a circulating water centrifugal pump, a circulating manifold, a Venturi tube, an efficient jet ejector, a ventilation port and a clear water injection port, wherein an inner cavity is formed in the box body.

The invention discloses a method and device for treating degradation-resistant oil extraction sewage of an oil field. The treatment device and method aim at deep treatment, up-to-standard drainage or reuse of the oil extraction sewage of the oil field, the problem that in the process of treating degradation-resistant oil extraction sewage of an oil field, a traditional treatment process technology is poor in effectiveness is solved, the treatment device and method have the advantages of being low in treatment cost, good in effect and the like and can be widely applied to the field of degradation-resistant oil field oil extraction sewage deep treatment and reuse, the technical difficult problem of treating the degradation-resistant oil extraction sewage of the oil field can be solved fundamentally, and the resource recovery of the oil field sewage is achieved.

The invention belongs to the technical field of air floatation, and discloses a closed air floatation device and an air floatation method. The air floatation device comprises a closed reactor and a micro-nano bubble generator, and the closed reactor is sequentially provided with a reaction chamber, a multi-stage separation chamber, a clear water chamber and a scum chamber in the water inlet direction; flow guide channels are respectively arranged between two adjacent stages of separation chambers and between the last stage of separation chamber and the clear water chamber, the side surface of each stage of separation chamber is provided with a water passing hole communicated with the flow guide channel, the upper layer of each stage of separation chamber is connected with the scum chamber through a scum collecting channel, and the tops of stages of separation chambers are communicated; the micro-nano bubble generator is arranged in the closed reactor and is communicated with the bottom of the separation chamber. The full-closed reactor is adopted, the multi-stage separation chambers are arranged in the full-closed reactor to perform air flotation treatment on sewage, the air flotation efficiency is high, nitrogen and other inert gases can be filled, intrinsic safety of an air flotation equipment body is achieved, emission of VOCs and other foul waste gas is avoided, and VOCs waste gas is prevented from polluting the environment.

The invention relates to the technical field of wastewater treatment, and discloses a graded dual-mode air flotation device which comprises a first air flotation box, a second air flotation box is fixedly installed on the left portion of the first air flotation box, and a partition plate is fixedly installed between the first air flotation box and the second air flotation box. Through the arrangement of the partition plate, the first air flotation box and the second air flotation box are classified, firstly, a large number of bubbles generated by air in the first air flotation box are used for conducting air flotation on a large number of particles contained in waste water, the waste water is cleaned for the first time, and most heavy particles are removed; in the second air flotation box, an anode plate and a cathode column are used for electrolyzing the wastewater, tiny bubbles generated by electrolysis are used for air flotation and deep cleaning, two different bubble generation modes are combined for cleaning suspended matters in the wastewater, the energy consumption generated by electrolysis is reduced, and the suspended matter cleaning effect is improved; the air flotation device can meet the cleaning of wastewater with different concentrations.