14results about How to "Reduce efflux" patented technology

The application belongs to the technical field of biology, and discloses a Yarrowia lipolytica engineering strain for efficiently producing eicosapentaenoic acid based on citric acid metabolism regulation, a method and application, wherein a chassis strain of the engineering strain is Yarrowia lipolytica Po1f, and genes of Δ9 elongase, Δ8 desaturase, Δ5 desaturase and Δ17 desaturase in a fatty acid synthesis pathway, a heterologous ATP-citrate lyase and a mitochondrial citrate carrier are overexpressed. ATP-citrate lyases and mitochondrial citrate carrier genes respectively derived from Schizochytrium sp. and Saccharomyces cerevisiae are combined to be expressed in the Yarrowia lipolytica engineering strain, so that the production of EPA and oil in the Yarrowia lipolytica engineering strain is significantly improved, and compared with a control strain, the production of oil and EPA is respectively increased by 243.35% and 161.85%.

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.

This invention relates to the field of water pollution purification, specifically to a process for purifying and recycling industrial wastewater. The process provided by this invention induces the in-situ crystallization and precipitation of calcium and magnesium ions, primarily in the form of aragonite-type calcium carbonate, by adding a crystal form regulator to the wastewater. This replaces the traditional precipitation method using precipitants, fundamentally preventing the generation of secondary sludge. Simultaneously, a quencher regulates the type and concentration of active free radicals within the system, achieving targeted degradation of organic matter while maximizing the retention of beneficial ions in the water, ensuring the corrosion inhibition performance of the recycled water. This invention features a simple operation, requires no mechanical structural modifications, and can be directly adapted to existing industrial water treatment systems. It effectively solves the problem of simultaneously addressing hardness removal and organic matter degradation in circulating water wastewater treatment, significantly improving the purification and recycling efficiency of wastewater. The treated effluent can be directly reused in industrial circulating water systems.

The application provides a cooling air heat circulation system of a ring cooler feeding hopper, which comprises a cooling pipeline, a ring cooler feeding hopper, a hot air pipeline and a main burner, the outlet end of the cooling pipeline is communicated with the ring cooler feeding hopper, a cooling fan is arranged on the cooling pipeline to guide the cooling gas into the ring cooler feeding hopper through the cooling pipeline, and the hot air pipeline is communicated with the ring cooler feeding hopper and the main burner respectively to guide the gas heated by the ring cooler feeding hopper into the main burner. By arranging the hot air pipeline, the high-temperature hot air cooled by the ring cooler feeding hopper can be introduced into the main burner to participate in combustion, the energy waste caused by the direct discharge of the high-temperature hot air is avoided, and the energy utilization efficiency is improved. By using the high-temperature hot air as the combustion-supporting air of the main burner, the temperature of the high-temperature hot air is higher than that of the normal-temperature combustion-supporting air used in the prior art, the combustion can be provided with more favorable conditions, the fuel combustion is more sufficient, the fuel consumption of the main burner is reduced, and the energy cost in the production process is reduced.

The utility model belongs to the technical field of sorting procedure, especially relates to a sorting procedure green environmental protection water balance system, including the pit water storage area, the ore dressing operation main factory building, the roller grinding operation area, the high -placed water pool, the floating boat pump station, the concentration tank, the ring water pump house, the buffer pool, the floating boat pump station is located in the pit water storage area, the floating boat pump station connects the high -placed water pool, the high -placed water pool connects the ore dressing operation main factory building, the roller grinding operation area and the ring water pump house, the ring water pump house and the concentration tank are provided with near the ore dressing operation main factory building, the drainage of ore dressing operation main factory building passes through the tailing way and leads to the concentration tank, the concentration tank connects the ring water pump house, the ring water pump house connects the water inlet of ore dressing operation main factory building, the buffer pool is provided near the ring water pump house, the buffer pool connects the pit water storage area, the automatic liquid level device is equipped in the buffer pool, the roller grinding operation area connects the ore dressing operation main factory building. The utility model will effectively control production wastewater storage water level, effectively reduce enterprise new water unit consumption, effectively control production water and so on and discharge.

The utility model provides a kind of boiling furnace burn purification ash device, it is related to the technical field of fluidized combustion equipment, including body, wind box air supply component, the base of body is provided with air cap, the sidewall of body is provided with coal dust inlet pipe, the air outlet of wind box is connected with base, to send air to body and blow open the coal dust entering, body is provided with purification ash dust injection pipe, and the distance of purification ash dust injection pipe from the base of body is 600-700 millimeters, during the upward movement of the purification ash that is not fully combusted, in turn through the middle of boiling layer, the upper portion of boiling layer, purification ash can be fully combusted.Sending air component includes the first air supply pipe being arranged on the sidewall of body, the second air supply pipe being arranged in the interior of body, the outlet of first air supply pipe is arranged on the inner wall of body through the sidewall of body, and blows to the internal space of body, the wind of the outlet of second air supply pipe blows to the inner wall of body, to reduce the adhesion of dust, prolong the service life of fluidized bed furnace.

The invention discloses a method for recycling converter steel slag, which comprises the following steps of: mixing high-alkalinity steel slag with multi-source solid waste to react according to different alkalinity of converter hot-state steel slag, so as to obtain phosphorus-free slag, high-chlorine slag and ferrophosphorus slag which are in a solid solution state and are mutually layered; and then the components can be respectively circulated to corresponding working procedures of steel production for absorption. The low-alkalinity steel slag is subjected to cooling, crushing and acid leaching, the obtained iron slag is returned to be sintered for absorption, and the leachate is subjected to micro-electrolysis, oxidation and precipitation treatment and then is respectively recovered to obtain iron phosphate and calcium chloride products, so that zero discharge of wastewater is realized. According to the method, the steel slag is subjected to quality-divided treatment according to different alkalinity of the converter hot steel slag, so that the harmless treatment effect of the steel slag is improved, the discharge amount of the steel slag is greatly reduced, the method is environment-friendly and low in treatment cost, and synergistic efficient treatment of different steel slag, steel mill solid waste and waste acid is realized through a simple and easy-to-operate process; waste gas emission is little, no waste water is discharged, the required raw materials are solid wastes generated in the iron and steel industry, the overall treatment cost is low, and the method is environment-friendly.

The invention discloses a steel slag hot-state circulation treatment method, which is characterized in that based on the characteristics of steel slag and steel mill solid waste, a new thought of combining the steel slag with specific solid waste for coordinated treatment so as to realize steel slag dephosphorization and solid waste absorption is provided, and reaction products obtained by the synergistic treatment of the steel slag and the solid waste have different melting points and are easy to separate; accumulation and enrichment of harmful elements in the solid waste are greatly avoided; the low-cost enrichment of phosphorus in the steel slag is realized, the discharge capacity of the steel slag can be greatly reduced, and particularly, the obtained phosphorus-free slag has higher heat and can be circularly used for converter smelting, so that the energy is saved. Compared with an existing reduction gasification dephosphorization technology, the dephosphorization effect is better, the waste gas emission amount is small, no waste water is discharged, in addition, the technology is more concise, the stability is higher, and the input cost is lower.

The application discloses a kind of lead-zinc ore beneficiation method and system in polymetallic ore, it is related to the technical field of beneficiation, including the following steps: S1, crushing;S2, grinding;S3, lead flotation: the ore pulp after grinding is sent to lead flotation tank, flotation reagent includes 25# black medicine, butyl xanthate, foaming agent and zinc inhibitor, using 1 rough 2 sweep 3 precise flotation, and output lead concentrate and lead tailings;S4, zinc flotation: lead tailings are sent to zinc flotation tank, and flotation reagent includes copper sulfate, butyl xanthate and foaming agent, using 1 rough 2 sweep 3 precise flotation, and output zinc concentrate and zinc tailings;S5, tailings, wastewater treatment: the fluorite tailings produced by flotation are subjected to solid-liquid separation, and the liquid phase is sent to a sewage treatment station for treatment, and the treated water is recycled to the beneficiation section;Solid phase is sent to mine for filling treatment or used as building material, solve the problem that there is no efficient, environmentally friendly, economic lead-zinc ore comprehensive recovery beneficiation process suitable for the ore properties in Sichuan Mabian area in the prior art.

The application discloses a seawater desalination sludge heat pump drying-mineralization recycling method, which comprises the following steps: homogenizing, screening and removing impurities and mechanically dewatering seawater desalination sludge to obtain dewatered sludge; grading countercurrent desalination of the dewatered sludge through a first washing section and a second washing section to obtain salt-regulated sludge; mixing and forming the salt-regulated sludge and back-mixed formed material to perform closed cycle heat pump drying, and dividing dried condensate water into high-salt condensate water and low-salt condensate water according to a preset conductivity threshold; crushing, grinding and grading the dried sludge, and then performing acidification and mineral release and buffer stable mineralization of the low-salt condensate water, seawater desalination produced water and carbon dioxide gas to obtain mineralized produced water and mineralized residual material, so that the seawater desalination sludge is dried, desalted and mineralized and recycled.

The invention relates to an energy-saving process for synergistically recycling hydrogen peroxide and dilute sulphuric acid in acid-making tail gas desulfurization, which comprises the following steps: S1, tail gas desulfurization reaction: introducing tail gas discharged from a final absorption tower of an acid-making system into a tail gas desulfurization tower, and spraying a hydrogen peroxide solution from the upper part of the desulfurization tower to generate dilute sulphuric acid with the volume concentration of 20-25%; s2, graded collection of dilute sulphuric acid: when the volume concentration reaches 22%-25%, conveying the dilute sulphuric acid to a dilute acid storage tank by a dilute acid pump; when the volume concentration is lower than 22%, returning to the desulfurization tower for continuous recycling; s3, recycling and distributing dilute sulfuric acid: recycling the dilute sulfuric acid in a dilute acid storage tank in two paths: (1) conveying the dilute sulfuric acid with the volume ratio of 80-85% to an acid-making dry absorption process to prepare finished acid with the volume concentration of 93% or 98%; (2) conveying dilute sulphuric acid with the volume ratio of 15-20% to a purification process; s4, hydrogen peroxide is dynamically supplemented, and it is ensured that the residual concentration of hydrogen peroxide in dilute sulfuric acid is maintained to be 0.1%-0.5%. Accurate consumption control of hydrogen peroxide and resource recycling of dilute sulphuric acid can be realized.

The invention discloses a fluorine-containing wastewater purification and fluorine resource recovery method, which is suitable for a treatment scene in which F / HF and metal fluorine complexes coexist in fluorine-containing wastewater. The method comprises the following steps: homogenizing and pre-filtering wastewater; adjusting the pH value of the system to 8.5-10.5 under an alkaline condition to break complex, promoting hydrolysis of iron, aluminum and other metal ions to generate metal hydroxide flocs, and then carrying out solid-liquid separation to obtain fluorine-containing supernate; acidifying the supernate until the pH value is 0.8-2.0, extracting and splitting the supernate and an organic phase containing an amine carrier to obtain a fluorine-rich organic phase and a fluorine-poor water phase, washing the fluorine-rich organic phase, and performing reverse extraction to obtain a fluorine-containing recovery solution and recycling the organic phase; the fluorine-poor water phase enters a renewable fluorine removal material for deep fluorine removal to obtain treated water, and fluorine-containing regenerated waste liquid generated by regeneration flows back to the acidification section. According to the method, the operation stability can be improved, wastewater purification and fluorine resource recovery are realized, and discharge of fluorine-containing regenerated liquid is reduced.

The invention provides a method for extracting neopentyl glycol from wastewater, in the method, the wastewater comes from wastewater generated at the top of a neopentyl glycol light component removal tower, the content of the neopentyl glycol in the wastewater is about 10-15%, the generated wastewater directly enters a stripping tower, the stripping tower is filled with Pall ring filler, the neopentyl glycol in the wastewater is purified by raising the feeding position, and the neopentyl glycol in the wastewater is purified. According to the method, a light component removal tower is adopted, a 65-75% neopentyl glycol aqueous solution is produced at the bottom of the tower, a clear solution containing methanol and isobutyraldehyde is discharged from the top of the tower, neopentyl glycol in wastewater is separated at the pressure of 10-20 kPa and the temperature of 90-100 DEG C, and the recovered neopentyl glycol aqueous solution directly enters the light component removal tower through a returned material. According to the method, neopentyl glycol in the wastewater can be effectively recovered, the production cost is reduced, and the production benefit is increased.

The utility model discloses a dynamic blowing and sucking type oil smoke exhaust device which comprises an air curtain air supply mechanism, a cambered surface type smoke exhaust hood and a cooking bench, a heating area is arranged at the top of the cooking bench; the cambered surface type exhaust hood is arranged behind the cooking bench; the air curtain air supply mechanism comprises an air blower, a flexible gradually-expanding air supply pipe and a strip-shaped air opening, the two ends of the flexible gradually-expanding air supply pipe are connected with the air blower and the strip-shaped air opening respectively, and the strip-shaped air opening is located in front of the cooking bench and faces the cambered surface type exhaust hood. A wrapping area is formed in a lampblack generation area, lampblack diffusion is prevented, and the lampblack trapping rate is improved.