7661results about How to "Improve removal efficiency" patented technology

A coalescer is provided minimizing trade-offs among high removal efficiency, low pressure drop, long service life, and small size.

The present invention relates to a preparation method of biological affinity hydrophilic active magnetic seed filling material for treating water. It is characterized by that said method includes the following steps: mixing biological affinity substance, hydrophilic substance, magnetic powder and active carbon or magnetic powder and calcium carbonate in the high-molecular base material, and adding dispersion lubricating agent, uniformly stirring them, placing them into injection moulding machine, utilizing filling mould to make extrusion moulding and magnetizing, so as to obtain the invented filling material. It has biological affinity and hydrophilicity, at the same time can induce microbial activity and enzyme activity, and can raise oxygen utilization rate in water and water treatment efficiency.

An onsite chemistry air filtration system to remove gaseous contaminants from air is disclosed. The onsite chemistry air filtration system of the present invention comprises: a conventional particulate filtration section, a photochemical filtration section, a static gas phase filtration section and a catalytic filtration section. The conventional particulate filtration section captures solids and condensables. In the photochemical filtration section, UV lamps generate bio-destruction and surface photochemical activity on a semiconductor catalyst material, provide a radiation source to irradiate airborne contaminant molecules and to energize their states to promote reactions and generate airborne ozone and radicals. In the static gas phase filtration section, gas phase filtration media is used to capture contaminants, concentrate them in a relatively confined space and allow airborne generated chemistries to concentrate and react in-situ, thereby creating a regeneration effect on the media. In the catalytic filtration section, catalytic media scavenges and converts airborne radicals and ozone to harmless by-products.

The invention discloses a device and a method for increasing grain size of PM2.5 through turbulent flow and chemical agglomeration coupling. Dust-containing flue gas sequentially flows through a chemical agglomeration area and a turbulent flow generation area in a flue and finally enters an electrostatic dust collector; when the dust-containing flue gas flows through the chemical agglomeration area, the PM2.5 particles in the flue gas are primarily contacted with agglomeration solution fogdrops sprayed in through a dual-fluid atomizing nozzle, agglomeration solution liquid drops are evaporated, in the evaporation process, the PM2.5 particles are connected through macromolecule chains with polar groups, and the grain size of the PM2.5 is increased; the flue gas flows through the turbulent flow area, the agglomeration solution fogdrops are promoted to collide and contact the PM2.5, the PM2.5 are promoted to collide and contact the crude dust under the turbulent flow disturbance generated by a turbulence bar, the PM2.5 are further aggregated and increased in size, meanwhile, the residence time of the agglomeration solution liquid drops in the flue is prolonged, before entering the electrostatic dust collector, the agglomeration solution liquid drops are completely evaporated, and the particles of which the size is increased through agglomeration are finally moved by the electrostatic dust collector. The agglomeration increasing effect of the PM2.5 is obviously enhanced, and the using amount of an agglomeration solution is reduced.

The invention discloses a desulfurization and denitrification agent, a preparation method and application thereof. The desulfurization and denitrification agent is a nanometer material and comprises the following components: MgO, SiO2, CaO, Fe2O3, Al2O3, CuO and MnO2. Preferentially, the desulfurization and denitrification agent also comprises a strong oxidant KMnO4. By using the nanometer desulfurization and denitrification agent disclosed by the invention, NOX can be synchronously removed during a flue gas desulfurization process, and the desulfurization and denitrification efficiency is high.

The invention relates to a liquid-phase smoke desulfuration denitration purifying method and relative device, belonging to the smoke purifying technique. It can effectively remove sulfur dioxide and nitrogen oxide of smoke. It utilizes ejection bubbling method to adsorb the sulfur dioxide and nitrogen oxide of smoke, while the adsorption solution is the sodium chlorite solution in 0.001MOL/L-0.100MOL/ or the additive in 0.001MOL/L-0.005MOL/L, and the pH valve of adsorption solution is 3-11; the additive is one or the combination of calcium hypochlorite, baking soda, hydrogen dioxide solution, acid sodium phosphate, or calcium hydrate. The removing efficiency of sulfur dioxide in said invention is above 99%; the removing efficiency of nitrogen oxide is above 90%; and the utilization of adsorption solution is above 97%. Therefore, said invention has the advantages that high removing efficiency, lower cost, simple device, high utilization of adsorption solution and wider application for large, middle, and small boiler, etc.

The invention provides an electric complex-strengthening repairing method and device of heavy metal-organic co-contaminated soil. The method provided by the invention comprises the following steps of: filling contaminated soil into an electric repairing device, and then adding an oxidant into a cathode electrolyte and an anode electrolyte or directly spraying the oxidant on the contaminated soil, wherein the oxidant comprises hydrogen peroxide, pypocholoride and persulfate; applying a direct-current electric field on a cathode and an anode, wherein the strength of the electric field is 0.5-2 V/cm; and controlling the pH values of the cathode electrolyte and the anode electrolyte to be 3-11. By selecting the suitable for oxidant and controlling the pH value of the electrolyte, the migration of the heavy metal can be effectively increased and the removing efficiency is improved; and meanwhile, the oxidant is used for effectively degrading organic pollutants when the pollutants are migrated, thereby relieving the post-treatment and simultaneously removing the heavy metal and the organic pollutants.

The invention discloses a method for cooperatively promoting agglomeration growth of PM (particulate matter) 2.5 and treating desulfuration wastewater in an evaporation manner and a device of the method. The method particularly includes steps that agglomeration liquor prepared by desulfuration wastewater, high polymer adhesive and wetting agent is sprayed into an inlet flue of an electric precipitator and is evaporated by the aid of heat of flue gas, in an evaporation process, the wetting agent promotes dust to enter drops of the agglomeration liquor, the high polymer adhesive is connected with PM2.5 via a polymer chain with polar groups, the grain diameter of the PM2.5 is prompted to be enlarged, so that the PM2.5 can be gathered by the follow-up electric precipitator, the desulfuration wastewater is evaporated completely, suspended matters and dissolvable pollutants in the wastewater are converted into solid to be dissolved out, and the suspended matters and the dissolvable pollutants in the wastewater, together with dust in the flue gas, are gathered by the electric precipitator. The device consists of a boiler, an air preheater, the electric precipitator, a desulfurizing tower, a hydraulic cyclone, a desulfuration wastewater clarification tank and an agglomeration liquor preparation tank, and a double-fluid atomizing nozzle is arranged in the flue between the air preheater and the electric precipitator.

The invention discloses a catalytic module capable of removing formaldehyde at room temperature and a preparation method thereof. The catalytic module comprises a skeleton carrier, coatings and catalyst layers, the skeleton carrier is a foam ceramic structure with three-dimensional pore channels, and the foam ceramic structure is internally provided with multiple pore channels which are interwoven into a net-shaped structure and arranged in any one of the X direction, the Y direction and the Z direction; the coatings are evenly coated on the surfaces of the pore channels in the foam ceramic structure and the other surface of the foam ceramic structure, and the catalyst layers are highly dispersed on the coatings. By means of the catalytic module capable of removing the formaldehyde at the room temperature and the preparation method thereof, at the room temperature and environment humidity, low-concentration formaldehyde can be oxidized into H2O and CO2, excellent low-temperature activity and removing efficiency are achieved, and the formaldehyde removing efficiency can be kept above 98 percent at the airspeed SV equal to 50,000 h<-1>. The preparation process is simple, the precious metal load is low, and accessory equipment such as light sources and heating are not needed. The catalytic module is suitable for air purification of closed and semi-closed spaces such as living rooms, office buildings, schools, dormitories, shopping malls, furniture markets and automobiles.

Carbon dioxide (152) is removed following compressor (130) which compresses a mixture of compressed air (132) and recirculated exhaust gas (118′) from a gas turbine (120). The carbon dioxide depleted gas (136) is humidified (180, 114) and fed to the combustor (110).

The invention discloses a large-scaled culture method of high-concentration nitrosobacteria and application thereof. The method comprises the following steps of: (1) adding an enrichment culture solution with initial ammonia nitrogen mass concentration of 30-500mg/L in a reaction device with functions of stirring, heating and aeration; preparing activated sludge of a waste water treatment plant in activated sludge of 0.5-20% for primary inoculation to conduct the enrichment culture of the nitrosobacteria by 2-6d as a culture cycle, wherein extra ammonium salts and a growth promoter are added during the enrichment culture of the nitrosobacteria; (2) ending the culture when the concentration of NO2-N in the solution is accumulated to reach 70-95% of the concentration of total nitrogen; adding a flocculating agent for flocculation and sedimentation; and allowing to stand still to remove supernate, and then adding the enrichment culture solution to start the culture of the second cycle; and (3) continuously conducting 3-8 cycles of the enrichment culture to obtain the high-concentration nitrosobacteria. By adopting the nitrosobacteria to strengthen the bi-nitrification treatment of ammonia nitrogen contained waste water, the method has the advantages of high stress resistance, low cost and high efficiency and is suitable for the complicated treatment of ammonia nitrogen contained industrial waste water.

Disclosed are a device for treating nitrogen and phosphorus from wastewater, including: an algal culture tank for culturing microalgae capable of treating nitrogen and phosphorus from wastewater; and a separation membrane for separating thus treated water from the microalgae, and a method for the same.

According to the disclosed device and method, microalgae are cultured at high concentrations using wastewater, instead of an artificial culture medium, as a culture medium. As a result, nitrogen and phosphorus can be effectively treated from the wastewater, and the microalgae, which are useful as a biomass, may be cultured and recovered stably.

The invention discloses a kind of coal mercury discharging control method which is based on semi-drying method. Sprays additive into the boiler smoke, oxidizes the elemetary mercury into mercuric oxide easy to remove; then sprays liquid including oxidant into smoke and oxidizes the mercury, and the temperature is decreased and forms the low temperature for high efficiency absorption; sprays absorption agent into cooled smoke, eliminates the mercuric oxide and mercury; the solid particle containing mercury is collected through electricity deduster or baggage dedusting device. The invention reduces the cost of operation.

A transparent inorganic-oxide dispersion which contains inorganic oxide particles whose surface has been modified with a surface modifier having one or more reactive functional groups and, due to this, enables improvements in refractive index and mechanical properties and retention of transparency; and an inorganic-oxide-particle-containing resin composition obtained by combining and uniting this transparent inorganic-oxide dispersion with a resin through a polymerization reaction. Also provided are: a composition for encapsulating luminescent elements; a luminescent element; a process for producing the resin composition containing inorganic oxide particles; a hard coat and an optical functional film which have high transparency and can attain improvements in refractive index and toughness; an optical lens; and an optical part. The transparent inorganic-oxide dispersion is characterized by comprising a dispersion medium and inorganic oxide particles the surface of which has been modified with a surface modifier having one or more reactive functional groups and which have a dispersed-particle diameter of 1 to 20 nm. It is further characterized in that the surface modifier is one or more members selected from the group consisting of silane coupling agents, modified silicones, and surfactants.

This invention relates to a combined vertical flow-vertical deflection wet land treatment technique for domestic wastewater. The technique comprises a pretreatment system and an artificial wet land system. The pretreatment system is mainly aim to removing the floating matters and precipitable suspended matters in domestic wastewater. The artificial wet land system is composed of combined vertical flow-vertical deflection in series. The invention has high removing rate on COD, N and P in domestic wastewater.

A cleaning method for a semiconductor substrate is provided. After pure water is supplied to a cleaning tank, a chlorine gas is supplied to the pure water to thereby generate chloride ions, hypochlorite ions, chlorite ions, and chlorate ions in the pure water. Then, a semiconductor substrate is immersed into the pure water containing the chloride ions, hypochlorite ions, chlorite ions, and chlorate ions. The fabrication cost of a semiconductor device and adverse effects on the earth environment can be reduced. The concentration of the dissolved chlorine gas in the pure water is preferably in the range from 0.003 to 0.3% by weight.

The invention relates to an ecological slope protection type sewage land infiltration system which comprises a grid pond (2), an anaerobic hydrolyzing pond (4) and a stepped land infiltration unit which are sequentially arranged along the gradient of a sloping field from top to bottom, wherein the grid pond (2) is communicated with a ditch (1); the stepped land infiltration unit comprises multilevel slope protection infiltration beds (5); filter materials (7) are filled in the slope protection infiltration beds (5); hygrophyte communities (9) are cultivated on the slope protection infiltration beds (5); a modal conversion assembly (6) used for controlling infiltration speed, waterpower retention time, a filtering layer internal environment and an effluent water mode is arranged between adjacent slope protection infiltration beds (5). The ecological slope protection type sewage land infiltration system disclosed by the invention tolerates the rural sewage quality water flow impact, is difficult to block due to high reaeration capacity, intensifies the denitrification and dephosphorization effect, is green, energy-saving, economic and practicable and has excellent water conservancy and ecology value.