9results about How to "Guaranteed emission standards" patented technology

The utility model discloses treatment equipment suitable for aged leachate. The treatment equipment comprises a pretreatment system, a DTRO (Disk Tubular Reverse Osmosis) system, an immersion combustion evaporation system, an ammonia separation membrane system and a contact oxidation system which are connected in sequence, the inlet end of the pretreatment system is connected with a lifting pump, and the aged leachate is guided into the pretreatment system through the lifting pump; the pretreatment system consists of a high-density sedimentation tank, a lime dosing device, a flocculant dosing device and an acid-base regulation dosing device; the high-density sedimentation tank is communicated with the clarification water tank; the lime dosing device, the flocculant dosing device and the acid-base adjusting dosing device are mounted on the edge of the high-density sedimentation tank; the system disclosed by the utility model has the advantages that the problems that the total nitrogen exceeds the standard, the residual concentrated solution is difficult to treat and the like in the traditional treatment of the aged leachate are solved, high-concentration ammonia energy in the aged leachate can be recycled, the treatment cost of the whole system is reduced, and an effective way is provided for the treatment of the aged leachate.

The invention discloses a metal manganese wet smelting production process which comprises the following steps: crushing manganese carbonate raw ore, grinding into manganese mineral powder, feeding into a slurrying barrel, blending into slurry, conveying into a chemical combination barrel, preparing a crude manganese sulfate leaching solution in the chemical combination barrel, performing three-stage filter pressing and purification impurity removal, feeding the obtained electrolyte into an electrolytic bath for electrolysis, the filter residues, lime and a heavy metal chelating agent are mixed and fed into a low-temperature rotary kiln, produced ammonia-containing high-humidity flue gas is subjected to sedimentation dust removal and cooling by a heat exchanger to obtain low-concentration ammonia water for reuse, and the rest tail gas enters a spray washing device to be desulfurized and then discharged; and feeding the deaminated manganese slag into a medium-temperature roasting kiln for roasting modification to obtain a gelling fine powder product. According to the method, through collaborative optimization of all the steps, the purposes of high efficiency, high quality, low cost and environmental protection of metal manganese hydrometallurgy are achieved, and the practicability and the industrial popularization value of the process are greatly improved.

An aeration tank and a sewage treatment system are characterized in that an anoxic regulation and control mechanism and an aerobic regulation and control mechanism are arranged in an aeration tank body, the anoxic regulation and control mechanism can create an anoxic environment around the anoxic regulation and control mechanism so that the area becomes an anoxic section, and the aerobic regulation and control mechanism creates an aerobic environment around the aerobic regulation and control mechanism so that the area forms an aerobic section; in the process that sewage flows along the channel, the sewage sequentially passes through the anoxic zone and the aerobic zone, in the anoxic zone, most nitrate radicals and nitrite radicals in the sewage are reduced into nitrogen by denitrifying bacteria in activated sludge, and nitrogen elements in the sewage are removed; in the aerobic section, most ammonium nitrogen in the sewage is converted into nitrate and nitrite by nitrifying bacteria in the activated sludge, and nitrogen in the sewage is further converted and removed; the denitrification effect of the anoxic section and the nitrification effect of the aerobic section are synergistically carried out, so that nitrogen elements in sewage can be more effectively removed, the denitrification efficiency is greatly improved, up-to-standard discharge of the sewage is ensured, and eutrophication pollution to a water body is reduced.

This utility model relates to the field of chemical production and processing technology, specifically an automatic dispersant dosing device. It includes a dispersant dosing unit, a reaction unit, and a washing unit. The dispersant dosing unit includes a dispersant hopper, with a dispersant tipping machine connected to the bottom of the hopper, and a dispersant screw conveyor connected to the bottom of the tipping machine. The reaction unit includes a sodium sulfide solution preparation tank and a dispersant solution preparation tank, with the upper part of the sodium sulfide solution preparation tank connected to the sodium sulfide solution tank via a pipeline. In this automatic dispersant dosing device, the dispersant hopper, dispersant tipping machine, and dispersant screw conveyor, in conjunction with a level gauge and a PLC automatic control system, achieve automatic and precise dispensing of the dispersant. The tipping machine shaft and rake teeth of the dispersant tipping machine effectively prevent material blockage, while the screw conveyor shaft and blades of the dispersant screw conveyor ensure stable material transport, avoiding errors and delays associated with manual dosing.

The utility model relates to the technical field of waste gas treatment equipment, in particular to a noise-reduction exhausted waste gas treatment device for a laboratory, which comprises a box body, a gas inlet pipe is arranged at the top of the box body, and the gas inlet pipe is communicated with the inside of the box body; a noise reduction cavity, a pretreatment cavity, an adsorption cavity and an exhaust cavity are sequentially formed in the box body from left to right, the noise reduction cavity, the pretreatment cavity, the adsorption cavity and the exhaust cavity are separated through partition plates, and opening structures are arranged on the partition plates; multiple sets of noise reduction plates are arranged in the noise reduction cavity, the multiple sets of inclined noise reduction plates are arranged in the noise reduction cavity, the adjacent noise reduction plates form a Z-shaped waste gas channel, in combination with sound absorption holes in the surfaces of the noise reduction plates and noise reduction cotton on the side walls, waste gas is reflected many times in the channel, noise is effectively absorbed, and compared with a traditional noise reduction structure, the design is simplified; the noise reduction effect is greatly improved while the cost is reduced, and the interference of waste gas emission noise on a laboratory and the surrounding environment is reduced.

The utility model discloses a kind of waste gas treatment devices for plastic product production, including first processing box, for realizing to waste gas preliminary spray purification treatment spray mechanism, and spray mechanism is arranged inside the first processing box, second processing box, install at the top of first processing box, for realizing to waste gas adsorption purification treatment adsorption mechanism, and adsorption mechanism is arranged inside the second processing box, the utility model is set by spray mechanism and adsorption mechanism, the spray mechanism in first processing box can waste gas preliminary spray purification treatment, can effectively remove particulate matter, water-soluble harmful component etc. in waste gas, reduce the concentration of pollutant in waste gas, reduce burden for subsequent adsorption treatment, cooperate with the adsorption mechanism in second processing box then waste gas after spray treatment can be further adsorbed and purified, remove volatile organic compounds, odor gas and other hardly soluble harmful components in water, both synergic cooperation, can ensure that waste gas is discharged up to standard.

The utility model discloses an energy-saving ton cylinder tunnel kiln structure for waste gas purification treatment, and particularly relates to the technical field of ceramic firing equipment, which comprises an air inlet pipe and a fuel pipe, a sealing disc, a sealing ring and a rotating roller with an oxygen content sensor at one end, an external handle and an angle scale are arranged in the air inlet pipe, and an operator rotates the handle according to oxygen content feedback. A fuel pipe of the fuel assembly communicates with an air inlet pipe through a communicating window, a baffle disc in the pipe is provided with a feeding window, a bottom driving piece is connected with a spiral plate, the spiral plate and an assembly ring form a spiral channel, and a stirring plate is matched, so that fuel is fully premixed with air before entering a combustion chamber; the premixed combustible mixed gas is fully combusted, flame and temperature are controllable, a stable high-temperature area can be accurately formed in the kiln, heat is concentrated to heat ton cylinders, heat loss is avoided, unit energy consumption is reduced, nitrogen oxide generation is reduced through premixed combustion, waste gas purification burden is relieved, and it is guaranteed that waste gas reaches the standard to be discharged.

The utility model relates to the technical field of waste gas treatment, concretely to high -efficient automatic acid -removing water washing system. System includes primary water washing tower, secondary water washing tower, spray pump and pipeline etc., and the top of primary water washing tower is connected with secondary water washing tower through the pipeline, and the primary water washing tower is connected with acid -containing tail gas inlet pipeline, and the bottom of primary water washing tower is connected with primary water washing tower spray pump through the pipeline, and primary water washing tower spray pump is connected with the top of primary water washing tower through the pipeline. The primary water washing tower is equipped with primary water washing tower liquid level detector and primary water washing tower concentration analysis instrument, and the primary water washing tower liquid level detector is connected with PLC control system, and the secondary water washing tower is equipped with secondary water washing tower liquid level detector and secondary water washing tower concentration analysis instrument, and the liquid level detector is connected with PLC control system. The system linkage through PLC control system and each liquid level detector, concentration analysis instrument, cut -off valve and pump body has realized the automatic control of hydrogen fluoride acid -containing tail gas treatment whole process.

The utility model discloses a dichloroethane adsorption recovery device, which relates to the technical field of waste gas adsorption devices and comprises an adsorption kettle, a resin layer is filled in the adsorption kettle, the top of the adsorption kettle is respectively connected with a nitrogen inlet pipe, a steam inlet pipe and a waste gas outlet pipe, and the bottom of the adsorption kettle is respectively connected with a waste gas inlet pipe, a steam outlet pipe and a nitrogen outlet pipe. The waste gas outlet pipe is connected with a fan, the tail end of the waste gas outlet pipe is connected with an exhaust funnel, the tail end of the steam outlet pipe is connected with a condenser, the condenser is connected with a separator through a pipeline, the separator is connected with a recovery pipe and a sewage pipe, and a secondary adsorption pipe is connected between the condenser and the waste gas inlet pipe. According to the device, the dichloroethane is recycled, the content of the dichloroethane in the waste gas is reduced, and the standard emission of the tail gas is kept.