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224results about How to "Effective attachment" patented technology

Method for strengthening activity of anaerobic ammoxidized microorganisms through polyvinyl alcohol-sodium alginate-activated carbon embedment

The invention belongs to the field of water treatment, and relates to a method for strengthening the activity of anaerobic ammoxidized microorganisms through polyvinyl alcohol-sodium alginate-activated carbon embedment. The method comprises the following steps of: soaking activated carbon in anaerobic ammoxidized basic inorganic salt solution, and preparing an embedding medium by using polyvinyl alcohol, sodium alginate and the activated carbon into in a proportion; and uniformly mixing treated anaerobic ammoxidized sludge and the embedding medium in a volume ratio to obtain immobilized balls, and culturing to obtain the anaerobic ammoxidized microorganisms steadily coupled on the activated carbon. The invention aims at wastewater with low carbon-nitrogen ratio, and can provide a method for embedding the anaerobic ammoxidized sludge by using the sodium alginate and the polyvinyl alcohol as carriers and the activated carbon as a strengthening agent, and a technology for strengthening the activity of the anaerobic ammoxidized microorganisms and enabling the anaerobic ammoxidized microorganisms to resist the influence of adverse environment. By the method, sewage plants can run more steadily for a long time, and the conditions of actual operation management of the sewage plants are met.
Owner:SUN YAT SEN UNIV

Composite zeolite membrane, and preparation method and application thereof

The invention discloses a composite zeolite membrane, and a preparation method and application thereof. The composite zeolite membrane comprises a support body layer and a zeolite membrane layer, wherein the support body layer is prepared from nanometer stage or submicron stage ceramic powder materials or ceramic material precursors through a static spinning process; the porosity of the support body layer is as high as 83 percent, and is adjustable and controllable between 40 percent and 83 percent. The composite zeolite membrane provided by the invention has the advantages that the porous ceramic prepared by the static spinning process is used as the support body layer; the surface structure of the support body layer is flat and continuous; the porosity is high; the pore diameter is uniform; the size of the pore diameter is adjustable and controllable; the pore passage sinuosity is small; the mechanical intensity is high; the flux of the composite zeolite membrane is improved; in addition, through the fiber-shaped pore passage structure of the support body layer, seed crystals can be effectively attached; the loading quantity of the seed crystals can be ensured; meanwhile, the matching degree and the compatibility between the zeolite membrane layer and the support body layer are greatly improved; the stability of the zeolite membrane layer is improved.
Owner:PEKING UNIV SHENZHEN GRADUATE SCHOOL +1

Whole-process autotrophic nitrogen removal method and device

The invention discloses a whole-process autotrophic nitrogen removal method. The method mainly comprises the following steps: 1) inoculating anammox sludge into a reactor; 2) introducing nitrogen into the wastewater so as to reduce the DO (Dissolved Oxygen) concentration of wastewater to 0mg / L (milligram per liter) by filling nitrogen into the wastewater, and regulating the pH value of a water inflow barrel to reach 7 to 8; 3) gradually increasing the water inflow load by increasing the total nitrogen concentration of the wastewater and reducing the hydraulic retention time; 4) gradually increasing the DO concentration in the wastewater after a reaction is stable, thereby culturing bacteria capable of consuming oxygen in the reactor; 5) forming the oxygen-containing bacteria on the outer layer of the anammox sludge after performing the culturing acclimatization for half a month; 6) inoculating nitrosobacteria into the reactor and properly lowering the nitrate nitrogen concentration in the inflowing water while performing aeration to the reactor and controlling aeration quantity at the same time, thereby partially converting ammonia nitrogen entering the reactor into the nitrate nitrogen, i.e., the concentration (mg / L) ratio of the ammonia nitrogen to the nitrate nitrogen is 1:1 or so; regulating the pH value in the reactor to reach 7.5 to 7.7 by using a pH controller; 7) gradually increasing the water inflow load, thereby removing the nitrogen stably. The invention further discloses a device for realizing the whole-process autotrophic nitrogen removal method.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI

Improved integrated sewage treatment device

The invention discloses an improved integrated sewage treatment device. A settling tank is connected with a water outlet at the upper part of a swimming bed reactor; the bottom of the settling tank is connected with the interior of the swimming bed reactor through a circulating pump; the swimming bed reactor is connected with an aeration pump; biofringe filler is filled in the swimming bed reactor; an up-flow type reactor adopts a cylindrical double-layer structure; the top of a reaction layer is at closed state, and an air outlet is arranged at the top of the reaction layer; a water distributor is arranged at the bottom of the reaction layer; a circular baffle plate is arranged above the water distributor; the reaction layer is divided into an upper layer reaction chamber and a lower layer reaction chamber by the circular baffle plate; a three-phase separator is arranged between the water distributor and the circular baffle; biofringe filler is filled in the upper layer reaction chamber; polyethylene sponge filler is vertically distributed in the lower layer reaction chamber; and a water inlet is arranged at the bottom of the up-flow type reactor, which is connected with a water outlet at the upper part of the settling tank. According to the improved integrated sewage treatment device, the technologies of anaerobic ammonium oxidation and denitrification are conducted in a reactor, therefore, the space is saved, and the nitrogen removal efficiency is improved.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI

Aviation aluminum alloy component residual stress detecting and evaluating system and method

Disclosed are an aviation aluminum alloy component residual stress detecting and evaluating system and method. The system comprises a signal generator, a power amplifier, a probe, a modulator circuit, a filtering amplifier, a data collecting card and a computer which are sequentially connected. The probe comprises a cross-shaped flexible excitation coil which is bonded with a plastic base with an angle dial, a first solid-state magnetic field sensor, a second solid-state magnetic field sensor, a third solid-state magnetic field sensor and a fourth solid-state magnetic field sensor are fixed in four cross-shaped arms of the cross-shaped flexible excitation coil respectively, a center locating point O of the cross-shaped flexible excitation coil is completely overlapped with the center of the plastic base with the angle dial, the direction of the connecting line of the first solid-state magnetic field sensor and the third solid-state magnetic field sensor is completely overlapped with the horizontal direction, and the direction of the connecting line of the second solid-state magnetic field sensor and the fourth solid-state magnetic field sensor is completely overlapped with the longitudinal direction. The invention further discloses the detecting and evaluation method corresponding to the system. Thus, quantitative and directional detecting can be conducted on the residual stress of aviation aluminum alloy components.
Owner:山东信开源科技创新发展有限责任公司 +1

Oil-contained sewage treatment method and eddy energy fast-cyclone separating system of special equipment for method

The invention discloses an oil-contained sewage treatment method and an eddy energy fast-cyclone separating system (Haynes) of special equipment for the method. Oil-contained sewage enters a multilevel cyclone speed three-phase mixer together with a prepared reagent and compressed air, the multilevel three-phase mixer makes the reagent be adequately contacted with the contaminants to form micro floc and makes the compressed air enter a releasing cavity after being adequately dissolved in the sewage, the dissolved gas in the floc is slowing released in the releasing cavity as the pressure is reduced, so the moisture inside the floc is squeezed out, the gas and solid floc form a porous hollow shape, the moisture content is remarkably reduced, the specific gravity is lighter, finally the floc after forming the scum enters a separating tank, the scum is scraped by a scraping machine above the separating tank, the scraped scum is discharged by a connected hopper to be subsequently dehydrated, the separated water overflows to a water outlet groove through a water outlet weir plate to be discharged through a water outlet pipe. According to the oil-contained sewage treatment method and the separating system, advantages of good treatment effect, reagent conservation, less sludge, less investment, simpleness in control, low maintenance expense and the like can be realized.
Owner:上海齐国环境科技有限公司

Electric boiler capable of rapidly descaling

The invention discloses an electric boiler capable of rapidly descaling. The electric boiler comprises a base, a faucet, a water inlet valve, a boiler body, bent pipes and a liquid level pipe, the boiler body is arranged at the upper part of the base, the outer wall of the boiler body sequentially communicates with the water inlet valve and the faucet from top to bottom, the outer wall of the boiler body communicates with the vertically-arranged liquid level pipe through the bent pipes at the upper part and the lower part, the top of the boiler body is fixedly provided with a motor through a motor seat, the motor is in transmission connection with a lead screw inside the boiler body through a coupling, a bearing seat is arranged at the inner bottom of the boiler body, moreover, the interior of the bearing seat is rotationally connected with the lead screw, and the exterior of the bearing seat is sleeved with a bearing seat isolation cover. In the electric boiler capable of rapidly descaling, a connecting plate is arranged inside the boiler body, then a plurality of vertically downward heating pipes are uniformly connected to the bottom of the connecting plate, compared with a traditional spiral heating pipe, the electric boiler has the advantages that the machining process is simple, and the water scale is not prone to adhesion.
Owner:张凯帆

Environmental-protection ecological vegetation carpet by utilization of municipal sludge

The invention discloses environmental-protection ecological vegetation carpet by the utilization of municipal sludge. The environmental-protection ecological vegetation carpet is a layered structure, and successively comprises a non-woven fabric layer, a first plant fiber layer, a seed matrix mixing layer and a second plant fiber layer from the bottom to the top. The seed matrix mixing layer is composed of seeds and a matrix, thickness is 0.7-1.1 cm, dosage of seeds is 20-30 g / m<2>, and dosage of the matrix is 2.8-3.8 kg / m<2>. The matrix comprises the following ingredients (by weight): 60 parts of sludge with 30-50% of water content, 20-30 parts of coconut fibre waste and 10-20 parts of straw ash. The environmental-protection ecological vegetation carpet is prepared from wastes, is low-cost and has strong environmental protection property. The environmental-protection ecological vegetation carpet is relatively thin in thickness and can be stitched by a pin cushion mode. Structural power of the environmental-protection ecological vegetation carpet is strong. The environmental-protection ecological vegetation carpet is convenient for transport and construction, and has enough conservation ability of water and soil during the early stage of construction so as to effectively prevent water and soil loss during the early stage of construction. Grass seeds and scrub species can grow in the matrix, roots can be greatly attached to the matrix and soil, and protective property is good.
Owner:CHANGSHA NUOYI ENVIRONMENTAL SCI & TECH

Mold release agent for pig-casting machine

The invention discloses a mold release agent for a pig-casting machine, which belongs to the technical field of mold release agents for metallurgy and foundry. The mold release agent provided by the invention comprises, by mass, 20 to 25 parts of blast furnace sludge, 10 to 13 parts of ash collected from the head of a sintering machine through electric precipitation, 16 to 23 parts of fly ash collected from an ore groove at the front of a furnace, 15 to 17 parts of soybean oil, 5 to 7 parts of limestone, 9 to 10 parts of alumina, 11 to 15 parts of dolomite, 17 to 19 parts of bentonite, 7 to 8 parts of an iron red epoxy ester primer, 3 to 5 parts of zirconia and 800 to 1000 parts of water. According to the invention, the blast furnace sludge, the ash collected from the head of the sintering machine through electric precipitation and the fly ash collected from the ore groove at the front of the furnace which are wastes difficult for comprehensive utilization in a steelworks are used as a part of the components of the mold release agent, so the wastes are recycled and production cost of the steelworks is greatly reduced; moreover, the mold release agent can effectively adhere on the inner surface of a mold and forms an effective separating layer between molten iron and a pig mold, demolding can be realized without extra knocking of the cast iron machine, and a cast iron ingot has a smooth surface.
Owner:高金菊

Cleaning and packaging treatment method of original accessories of excavator

The invention belongs to the technical field of accessory cleaning, and provides a cleaning and packaging treatment method of original accessories of an excavator. The cleaning and packaging treatmentmethod of the original accessories of the excavator comprises the steps of pretreatment, ultrasonic cleaning, cleaning and drip washing, drying, oil immersion, packaging and the like. The efficiencyand the effect of the ultrasonic cleaning are improved by the ultrasonic cleaning after the pretreatment, after the ultrasonic cleaning, the original accessories are subjected to spraying and cleaningthrough a low-pressure spraying head, on the one hand, the low work efficiency is avoided, on the other hand, metal filing, oil stains and the like on the surface of a cylinder cover of an oil cylinder can be cleaned up to ensure effective attachment of rust-proof oil after oil immersion is carried out, and the rust-proof effect of the cylinder cover of the oil cylinder is improved; furthermore,the cylinder cover of the oil cylinder is fully dried through a high-pressure air nozzle, the drying is realized, and the excess metal filing can be further completely removed; in addition, after thecylinder cover of the oil cylinder is impregnated in an impregnation pond filled with the rust-proof oil, the cylinder cover is drained off through a dripper to avoid being filled with too much the rust-proof oil, the effects on packaging and transportation are avoided, each cylinder cover of the oil cylinder is packed by a air bubble film and a carton, so that effective protection on the cylindercovers of the oil cylinders is realized.
Owner:CHANGDE JIAHONG MACHINERY

Aviation application type mesotrione water suspending agent and preparation method thereof

The invention relates to an aviation application type mesotrione water suspending agent and a preparation method thereof. The water suspending agent comprises the following components in percentage byweight: 10-40% of a mesotrione technical material, 1-6% of a wetting dispersant, 0.5-5% of a thickening agent, 0.1-0.5% of a defoaming agent, 2-6% of an antifreezing agent, 0.1-1% of a preservative,0.1-0.3% of a pH regulator, 0.1-1% of a spraying auxiliary agent, and the balance of deionized water for complementing the total weight percentage to 100%. Compared with the prior art, the water suspending agent provided by the invention has a novel auxiliary agent system, the volatilization drift loss of the mesotrione in a spraying process by using an unmanned aerial vehicle is reduced, the improvement of the utilization efficiency of the pesticide is facilitated, and the environmental pollution is reduced. With the combination of the pesticide spraying technology of unmanned aerial vehicles, the aviation application type efficient environment-friendly mesotrione water suspending agent has strong wettability, is obviously enhanced in adhesive force on plant leaves, and is an efficient green aviation application type mesotrione water suspending agent.
Owner:SHANGHAI NORMAL UNIVERSITY

Flexible noiseless self-sinking type non-slip floor

The invention discloses a flexible noiseless self-sinking type non-slip floor. The flexible noiseless self-sinking type non-slip floor comprises a composite surface layer and a non-slip film layer, and the non-slip film layer is provided with non-slip convex lines, non-slip concave lines or bottom lines composed of the non-slip convex lines and non-slip concave lines, wherein the bottom lines are unclosed bottom lines with openings. Compared with the prior art, the flexible noiseless self-sinking type non-slip floor has certain flexibility in component and structure, self-sinking type slipping stopping is formed, and the floor can be attached to the ground perfectly. By means of the design of a multilayer texture structure and the bottom lines, a good sound eliminating effect is achieved; by means of the unclosed bottom lines, ventilation is achieved, moisture can be discharged easily, moving stopping and slipping stopping are effectively achieved at the same time, and the floor face can be stably attached to the ground. The specific gravity of 1.9 tons per cubic meter or above can be achieved by the floor, and therefore the floor can be effectively attached to the ground through the weight of the floor and the non-slipping bottom lines, and the noiseless self-sinking type non-slip floor cannot move freely.
Owner:ZHEJIANG HAILIDE NEW MATERIAL

Self-circulation autotrophic nitrogen removal bioreactor

The invention provides a self-circulation autotrophic nitrogen removal bioreactor. A bioreactor body is in a cylindrical structure, externally sleeved with an annular backflow annular cavity and provided with a microporous aeration plate, a rotary water distributor, a gas collection hood, an anaerobic water distribution hood, a gas exhaust pipe, a three-phase separator and an anaerobic exhaust pipe sequentially from bottom to top. A backflow sieve mesh plate I, a water inlet pipe, an aerobic sludge discharging pipe, an anaerobic sludge discharging pipe, a backflow sieve mesh plate II, a wateroutlet groove and a water outlet pipe are sequentially arranged on the side wall of the bioreactor body from bottom to top. The whole bioreactor is functionally partitioned into an aerobic reaction area, an anaerobic reaction area, a sedimentation separation area and a backflow area. The self-circulation autotrophic nitrogen removal bioreactor has great nitrogen removal efficiency, is efficient and stable in operation and has advantages that 1) great sludge retaining effects and high sludge concentration are realized; 2) adverse influences on the nitrogen removal performance of the reactor inan aeration process are avoided; 3) the integral nitrogen removal performance of the reactor is improved; 4) operating cost is saved.
Owner:OCEAN UNIV OF CHINA

Surface treatment process for enabling plastics to have antibacterial function

The invention relates to a surface treatment process for enabling plastics to have an antibacterial function. The surface treatment process comprises the following steps: (1) degreasing the plastics: putting the plastics into a degreasing solution for carrying out degreasing treatment; (2) roughening the plastics: sequentially dipping the plastics into a roughening pretreatment solution and a roughening solution, and soaking; (3) neutralizing the plastics: mixing gylcol ester, sodium tripolyphosphate and water and evenly stirring, and dipping the plastics into a 30% sodium hydroxide solution for soaking; (4) catalyzing the plastics: adding trichloro-sym-diphenylurea and acetone into a catalytic solution and stirring, then adding silver nitrate and zinc nitrate into the obtained mixed solution, and stirring; putting the plastics into the mixed solution, soaking and standing; (5) treating by using oxidizing flame: calcining the plastics on the oxidizing flame; (6) carrying out vacuum treatment: spraying a catalytic solution, pumped into a spraying device, on the plastics under a vacuum condition; (7) drying the plastics. After the surface treatment process is used, a surface layer with the antibacterial function can be formed on the surface of the plastics, so that the antibacterial property of the plastics is effectively improved.
Owner:NANJING CONCORD FERTILIZER CHEM
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