41results about How to "Realize harmless discharge" patented technology

The invention discloses a recycling method of aluminum ash. The recycling method includes: grinding industrial secondary aluminum ash for 0.5-5h, and sieving with a 40-mesh screen to obtain aluminum ash micropowder; well mixing, by weight, 25-65 parts of aluminum ash micropowder, 20-35 parts of SiO2, 10-30 parts of CaO, 4-12 parts of TiO2, 5-12 parts of MgO and 0-5 parts of colorant; and putting in a melting furnace for melting treatment to obtain melt after melting; pouring the melt into a die, cooling-molding to obtain a glassy-state block, and thermally treating the glassy-state block to obtain a microcrystalline glass material. By the recycling method, the microcrystalline glass material stable in structure can be made of the aluminum ash, so that the defect of being prone to generating toxic and harmful volatile matters when existing wet methods are used to extract useful ingredients in the aluminum ash is overcome effectively, and harmless treatment and recycling of the aluminumash are realized.

The invention discloses a method for treating wastewater after ore leaching and ore closing of ionic rare earth ores. The method comprises the following steps: S1, taking ore leaching tail liquid, precipitation supernatant and product water washing liquid generated in an ore leaching process of ionic rare earth ores as raw materials, and determining the concentrations of rare earth ions, chlorineions, calcium ions and aluminum ions and the concentrations of other non-rare earth ions and heavy metal ions in the wastewater; S2, adding lime and sodium metaaluminate into the wastewater until themass ratio of Ca<2+> to Al<3+> to Cl<-> in the wastewater is (9-12):(1.5-2):1, stirring for reaction, and filtering; and S3, filtering to obtain a Fremys salt precipitate, and decomposing with hydrochloric acid to obtain a solution containing calcium chloride and aluminum chloride. According to the method, calcium salt, aluminum salt and chlorine ions in closed ore waste water are converted into Fremys salts to achieve recycling of an ore leaching agent while the content of the chlorine ions and the content of heavy metal Zn, Cd, Pb, Cu, As, Cr and Mn in the wastewater are reduced to achieve the harmless discharge of the wastewater, and the mining area environment influence after ore closing is small, so that efficient and environment-friendly extraction of ionic rare earth can be achieved.

The invention discloses an environment-friendly and energy-saving hogwash separation mechanism. A cylinder is used as a device main body; the top end of the device main body is connected with a filtering net basket through a hinge and solids and liquid in hogwash are separated; the separated solids are poured into a recycling vehicle to be intensively treated under the overturning of the filteringnet basket; an oil-water mixed solution separated at the bottom end of the device main body is conveyed into an oil-water separation tank; the oil-water separation tank is internally provided with afiltering net layer for further separating oil and water; separated oil at the top end of the oil-water separation tank enters a recycling oil bucket and is stored; separated water is discharged intoa sewer through a water discharging pipe and a valve, so that harmless emission of the hogwash is realized, and the problem that an existing hogwash treatment device in a catering industry cannot be used for carrying out harmless treatment on the hogwash is solved; the environment-friendly and energy-saving hogwash separation mechanism has very good practical value.

The invention provides a cyclic treatment process for wastewater containing cobalt-nickel heavy metal ions, belonging to the field of treatment of heavy metal wastewater. The cyclic treatment processcomprises the following steps: heavy metal recovery; solid-liquid separation; primary filtration; removal of SO4<2->; first-stage cyclone separation; gypsum drying; re-precipitation; stripping; ternary precipitation; re-filtration; and neutralization. According to the invention, ammonia water is used in the replacement of NaOH, so the production cost of enterprises and the salt content of discharged water are reduced; the heavy metals cobalt and nickel are reused; ammonia is recycled; profits are produced as gypsum is sold; and up-to-standard discharge of the wastewater is realized. Since a precision filtration process and other processes are additionally carried out and processes like multiple precipitation and multiple filtration are carried out for deep recovery of heavy metals such ascobalt, nickel and manganese, the discharged wastewater has lower salt content and lower concentration of heavy metal ions, and the recycling of heavy metal ions and the harmless discharge of the wastewater are realized. After treatment of the wastewater with the cyclic treatment process, the concentrations of NH<4+>, Co<2+>, Ni<2+> and SO4<2-> in the wastewater are lower than 27.32 g/L, 55.49 mg/L, 60-65 mg/L and 103.62 g/L, respectively and are reduced to 15 mg/L, 1 mg/L, 1 mg/L and almost zero.

The invention discloses a harmless resourceful treatment system for vinasse waste. The system comprises a vinasse waste conveyer belt, a vinasse waste delivery pipe and a treatment device, wherein thetreatment device consists of a crusher, a homogenizer, an anaerobic fermentation tank, an aerobic fermentation tank, a multiphase separator, an extraction and separation device and a carbonization device; the homogenizer is used for delivering the mixed and emulsified materials to the anaerobic fermentation tank through a connection pipe; the liquid outlet of the aerobic fermentation tank is communicated with the feeding port of the multiphase separator through a connection pipe; and intermediate carbon generated by the extraction and separation device via extraction is delivered into the carbonization device through a connection pipe. Compared with the prior art, the system carries out harmless treatment and resourceful utilization on the vinasse waste in the wineries, thereby thoroughlyrealizing harmless discharging of the vinasse waste after the treatment and discharging no harmful substances in the treatment process. According to the system, the sludge is recycled to produce high-value humic acid products and biochar raw materials, thereby greatly improving the economy and solving the environment pollution problems of the sludge factories.

The invention discloses a method for treating methyl mercaptan odor. The method comprises the following steps: chlorine dioxide oxidation reaction, liquid separation treatment, UV efficient photolysispurification reaction, ultraviolet synergistic chlorine dioxide advanced oxidation reaction and sodium hydroxide chemical absorption reaction. The method has the advantages that through the chlorinedioxide oxidation reaction, the UV efficient photolysis purification reaction and the ultraviolet synergistic chlorine dioxide advanced oxidation reaction, namely a series of reactions, the methyl mercaptan odor can be thoroughly removed; the sodium hydroxide chemical absorption reaction can be used for absorbing other harmful gases generated in the process of removing the methyl mercaptan odor, so that the secondary pollution can be avoided, and finally, the harmless emission can be realized.

The invention discloses industrial harmful waste gas treatment and recovery equipment based on atmospheric pollution control, and belongs to the field of industrial harmful waste gas treatment. The industrial harmful waste gas treatment and recovery equipment based on atmospheric pollution control comprises an equipment bottom plate, a dust treatment cavity, a washing cavity and a low-temperatureplasma cavity, wherein the dust treatment cavity, the washing cavity and the low-temperature plasma cavity are fixedly mounted on the top surface of the equipment bottom plate in sequence from one endto the other end, one side of the bottom end of the dust treatment cavity communicates with an air inlet pipeline, air inlet adjusting plates are hinged to the two sides of the air inlet pipeline through rotating shafts, a maintenance opening is formed in the middle of the dust treatment cavity, rail grooves are symmetrically formed in the two sides of the maintenance opening, and dust filteringnets are movably embedded and fixed in the two rail grooves. Dust in industrial waste gas is well filtered through the dust treatment cavity, the dust is scraped into a dust collecting hopper througha scraper plate and finally absorbed by a dust collector, and harmless emission of the dust is achieved.

The invention belongs to the technical field of waste treatment and provides an organic solid waste treatment method and treatment device. The treatment method comprises the steps that organic solid waste is indirectly heated through an external heat source, the organic solid waste is directly heated through superheated steam, and continuous anaerobic pyrolysis of the organic solid waste is achieved; then the mixed gas formed by pyrolysis gas generated by pyrolysis of the organic solid waste and superheated steam is subjected to high-temperature gasification combustion, the superheated steam serves as a reactant to participate in the high-temperature gasification combustion process, and the high temperature means that the temperature is higher than or equal to 800 DEG C. The treatment device comprises a heating chamber, a pyrolysis chamber, a superheated steam supply pipe, a combustion chamber, an exhaust pipe, a discharge device, a pyrolysis gas burner and an auxiliary fuel burner. According to the method, harmless and resourceful treatment of the organic solid waste can be achieved, and the method can also be used for recycling high-value resources of the original size from the waste. The whole device is simple in structure, easy to maintain and low in treatment cost.

The invention provides a fluidized bed gasification furnace and a gasification process. The fluidized bed gasification furnace comprises a gasification reaction section and an oxygen-enriched combustion section which are sequentially communicated from top to bottom. A catalyst-loaded feed coal inlet and a gasifying agent inlet are respectively formed in the upper part and the lower part of the wall surface of the gasification reaction section; a plurality of oxygen nozzles are formed in the wall surface of the oxygen-enriched combustion section, are obliquely arranged upwards along the wall surface and are communicated with an oxygen inlet of the oxygen-enriched combustion section, and oxygen is conveyed to the oxygen-enriched combustion section in a rotational flow manner, so that ash slag generated by the gasification reaction section and oxygen are subjected to a combustion reaction; a large amount of heat is released and a high-temperature area is formed, so that the ash slag containing the catalyst is molten into a liquid state at a high temperature, and the liquid ash slag descends along the inner wall to be discharged out of the gasification furnace. Coal with low ash melting point can be effectively catalyzed and gasified, the coal adaptability is greatly improved, and harmless discharge of ash slag is realized at the same time.

The invention provides a comprehensive treatment system capable of realizing stage filtering for kitchen lampblack. The comprehensive treatment system capable of realizing the stage filtering for thekitchen lampblack is used for a residential district, and comprises a fan, a primary separation device, a secondary separation device and a gas filtering device which are sequentially arranged, wherein the fan is used for conveying the kitchen lampblack to the primary separation device; the primary separation device is used for separating oil drops in the kitchen lampblack to obtain a primary separated substance; the secondary separation device is used for separating oil mist in the primary separated substance to obtain a secondary separated substance; and a gas separation device is used for removing impurities and peculiar smell of the secondary separated substance to obtain a tertiary separated substance. The comprehensive treatment system capable of realizing the stage filtering furthercomprises a spray device, wherein the spray device is arranged at the top of the gas filtering device. The comprehensive treatment system capable of realizing the stage filtering is capable of realizing that the kitchen lampblack is treated to achieve the national gas emission standards; and the separated dirty oil can be concentratedly conveyed to a dirty oil plant to be treated, the generated sewage can be concentratedly conveyed to a sewage plant to be treated, and concentrated collection for the dirty oil and the sewage is realized separately, and pollution is reduced.

The invention discloses an organic matter temperature change carbonization device and method, and relates to the field of organic matter treatment.The device comprises a carbonization treatment barrel, a temperature control assembly used for controlling the treatment temperature in the carbonization treatment barrel, a flow guide pipe, a cooling assembly, a water collection chamber and a gas collection chamber; the method comprises the following steps: S1, controlling the temperature in a carbonization treatment barrel to be a first temperature, and performing high-temperature dehydration on to-be-treated organic matters; s2, controlling the temperature in the carbonization treatment barrel to be a second temperature; s3, controlling the temperature in the carbonization treatment barrel to be a third temperature, and carrying out carbonization treatment on the pre-carbonized organic matters; organic materials to be treated enter the carbonization treatment barrel, the temperature control assembly controls the temperature, the time and the like of the organic materials in the barrel, smooth transition of the organic materials from the dehydration stage to the drying stage to the carbonization stage is achieved, and the carbonization efficiency is improved; the water vapor generated in the carbonization process is collected and recycled, and the collected waste gas is heated and combusted, so that harmless emission and energy conservation and effectiveness are realized.

The water-free toilet and domestic garbage treatment system provided by the invention relates to the field of sanitary toilet and domestic garbage treatment, and is composed of a collection and transportation system, a biological treatment system, and a waste gas discharge system. Wherein the collection and conveying system includes a toilet, a movable belt conveying mechanism, a conveying room, a waste exhaust pipe, a composting room, a liquid storage tank, etc.; The fermentation area, the vermiculture area, and the vermicompost accumulation area are composed of different functional areas; the exhaust gas discharge system includes a composting room, waste exhaust and air extraction pipes, a conveying room, an exhaust air duct, and a toilet. The beneficial effect of the present invention is that, through the above-mentioned system established, the toilet does not need water, is clean and odorless, separates and collects urine, and transports, collects, and uses biological treatment of solid organic domestic waste such as feces; saves water resources, and is highly efficient. Transformation and utilization of domestic waste, reducing the spread of diseases.

The invention discloses a harmless discharge range hood based on an ultrasonic generator for efficiency improving. The problems that in the prior art, oil fume dirt is liable to adhere to the inner walls of oil fume separation pipes, then the waste discharging efficiency is lowered, discharged waste gas contains fume and pollutes the atmosphere environment, and the fume purification efficiency islow are solved. The harmless discharge range hood comprises an oil fume suction hood body, an oil fume separation box body, a waste gas discharging device, a flange, a microprocessor, an audible and visual alarm, a smoke concentration sensor, a flange oil collection groove, an oil fume extraction pipe, an oil fume separation pipe, a negative pressure fan, an oil fume separation fan, an electric push rod, an oil pushing tool, a separation pipe oil collection groove, a waste oil collection box, a first waste gas discharging pipe, a purification pool, a second waste gas discharging pipe, a purification pool cover, the ultrasonic generator, a water inlet and outlet pipe and a water inlet and outlet electromagnetic valve. Oil fume dirt on the inner wall of the oil fume separation pipe can be effectively removed, oil fume mixtures on the bottom face of the oil fume suction hood can be collected, the operation intensity of users is relieved, meanwhile, discharged waste gas can be completely purified, waste gas harmless discharging is achieved, and the fume purification efficiency is high.

The invention discloses an aeration system activated carbon adsorption biological oxidation process. The process comprises the following steps: step 1, sewage flocculation; step 2, sewage pre-sedimentation; step 3, sewage regulation; step 4, selecting by a selector; step 5, aeration treatment; step 6, secondary precipitation; step 7, sludge dehydration; step 8, harmless discharge; the COD (Chemical Oxygen Demand) in the treated sewage is 45mg/l, the suspended solids are 8mg/l, the ammonia nitrogen is 2mg/l, the total nitrogen is 5mg/l, the total phosphorus is 0.2 mg/l and the chromaticity is 4 times and is smaller than GB3544-2008 < Discharge Standard of Water Pollutants for Pulping and Papermaking Industry >, harmless discharge of the sewage is realized, the oxygen demand is automatically detected through the arrangement of an intelligent aeration energy-saving control system, the aeration quantity matched with the oxygen demand is timely adjusted according to the oxygen demand, and the sewage treatment efficiency is improved. The energy consumption of the aeration system is saved by 9.5%, a facility for inputting a PAC biological carrier is additionally arranged in the aeration tank, activated carbon adsorption and biological oxidation are combined for treatment, and the purification function of the activated sludge process of the aeration tank is improved.

The invention relates to the field of biological environmental protection, in particular to a biological treatment process for odor generated by chicken manure recycling. The biological treatment process comprises the following steps of: (1) acquiring odor gas generated in a chicken manure fermentation process; (2) introducing the obtained odor gas into an ultraviolet photolysis purifier to complete a cyclic process of photocatalytic cracking treatment; (3) introducing the gas subjected to photocatalytic cracking treatment into a water washing tank for water washing treatment; (4) introducing the gas subjected to water washing treatment into an adsorption bin for adsorption treatment; (5) introducing the gas subjected to adsorption treatment into a biological digestion tank containing a biological digestion solution for biological digestion treatment; and (6) performing high-temperature sterilization treatment on the waste gas discharged from the biological digestion bin, and then discharging the waste gas. The problem that an existing composting field deodorization technology is not thorough in deodorization effect, can hardly deal with a scene with large-flow odor gas and low in treatment efficiency is solved.