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353results about How to "Good removal effect" patented technology

Method and system for laser deicing for power transmission and transformation equipment

The invention discloses a method and a system for laser deicing for power transmission and transformation equipment. The method comprises the steps of: adopting laser frequency conversion technology and a galvanometer scanning focusing principle; adopting a continuous or long-pulse solid laser as core deicing equipment; outputting infrared laser, partially converting the infrared laser into visible laser; coaxially outputting the infrared laser and the visible laser; focusing and irradiating on an ice-covering area of the power transmission and transformation equipment to deice through a collimating mirror, two scanning galvanometers and a focusing mirror; adopting control equipment to control the opportunity and the time of laser output of the laser and the vibration of the scanning galvanometers to ensure that the laser irradiated on the ice-covering area of the power transmission and transformation equipment performs two-dimensional mobile scanning; and observing the irradiation position of the visible laser through a tracking and aiming device to prevent the laser from damaging the power transmission and transformation equipment. The system has small volume and light weight, realizes the long-distance focusing of the laser, is favorable for removing large-area ice coating, realizes the tracking and observation of the laser deicing, prevents the laser from damaging the power transmission and transformation equipment, and can remove ice layers under the condition of no poweroff for a conducting wire iron tower; and the system can also be used for the deicing of the power transmission and transformation equipment such as insulators, overhead transmission lines, iron towers and the like.
Owner:WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST +1

Fiber fence intrusion monitoring system and pattern recognition method thereof

The invention discloses a fiber fence intrusion monitoring system and a pattern recognition method thereof. A dynamic threshold value parameter is set according to the magnitude of energy of a sampled signal, the sampled signal is segmented in a certain number, and the LC number in which the signal amplitude exceeds the threshold value parameter is counted in each segment, so that an LC distribution characteristic is obtained; and the LC distribution characteristic is calculated and counted to obtain a group of characteristic values, the group of characteristic values are input into a classifier for judgment output, and whether to alarm or not is decided according to an event mode represented by an output result of the classifier. By adopting the fiber fence intrusion monitoring system and the pattern recognition method thereof, the type of an intrusion signal is recognized while the intrusion is detected and positioned, the interference of noise can be well eliminated, the threshold value is automatically adjusted according to the magnitude of signal energy, the accuracy of the extracted characteristic vector is ensured, the recognition accuracy is effectively improved, and the problem of error alarms under the strong interference environments such as wind and rain is well solved.
Owner:饶云江

Efficient nitrogen and phosphorus removal township sewage treatment method and device

The invention relates to an efficient nitrogen and phosphorus removal township sewage treatment method and device, and belongs to the technical field of sewage treatment. The device comprises a pre-denitrification area, an anaerobic area, an aerobic tank 1, an anoxic area, an aerobic tank 2, an MBR (membrane biological reactor) tank and a disinfection and clean water tank. After entering the device, sewage is sequentially subjected to anoxic denitrification, anaerobic phosphorus release, aerobic phosphorus uptake, anoxic denitrification and aerobic phosphorus uptake under the action of different types of microorganisms. Endogenous denitrification is enhanced by biological stuffing, sectioned phosphorus removal and denitrification are performed, the contradiction of carbon source demands of nitrogen and phosphorus removal is solved, township domestic sewage can be subjected to deep nitrogen and phosphorus removal treatment without adding carbon sources, and nitrogen and phosphorus are efficiently removed by efficient interception separation characteristics. The device is stable in effluent quality and particularly suitable for treating township sewage in sensitive water body areas such as a water source area and a scenic area or needing recovery, the effluent quality can stably reach a first-class A standard and a surface water quasi four-class water standard which is the highest standard for domestic municipal sewage treatment.
Owner:方佩珍

Repairing method for cadmium and zinc heavy metal contaminated soil

The invention discloses a repairing method for cadmium and zinc heavy metal contaminated soil. The method includes the following steps that firstly, a repairing agent is prepared, wherein zeolite powder, coal ash, zinc oxide, sodium silicate, hydroxyapatite, sugarcane ash, fowl manure, selenium oxide, cyclodextrin, nano-nickel powder, potassium citrate and portland cement are mixed and then ground; secondly, the contaminated soil is flatly laid on a plate, one third of the total weight of the repairing agent is scattered on the contaminated soil, vertical ploughing is conducted, and water is sprayed; thirdly, one third of the total weight of the repairing agent is scattered on the contaminated soil, vertical ploughing is conducted, a phosphoric acid aqueous solution is sprayed, and ploughing is conducted after standing; fourthly, the rest of the repairing agent is scattered on the contaminated soil; and fifthly, the upper surface of the contaminated soil is covered with a layer of protection film finally for repairing. After the repairing method is used for repairing for 10 hours, the removing rate of cadmium ions in the soil is higher than 89.3%, the removing rate of zinc ions is higher than 90.5%, and high removing efficiency and a good removing effect are shown.
Owner:JIANGSU GAIYA ENVIRONMENTAL SCI & TECH CO LTD

Method for treating waste water by microbial directional produced enzyme

The invention relates to a method for treating waste water by microbial directional produced enzyme. The method comprises the following steps and technical conditions of: 1) preparation of nutrition liquid for culture: the nutrition liquid for culture comprises 1 to 10 percent of organic nutrition, 0.5 to 2 percent of A type inorganic nutrition, 0.1 to 0.5 percent of B type inorganic nutrition, 0.3 to 1.5 percent of trace elements and 1.5 to 7 percent of biological auxin; 2) preparation of culture liquid of activation microbes: the culture liquid consists of water and nutrition liquid required by spore state microbes and activated spore type microbes; 3) preparation of nutrition liquid for secondary metabolism: the nutrition liquid for the secondary metabolism comprises 0.5 to 2 percent of A type inorganic nutrition, 0.1 to 0.5 percent of B type inorganic nutrition, 0.3 to 1.5 percent of trace elements and 1.5 to 7 percent of biological auxin; 4) preparation of culture liquid of stimulated microbial secondary metabolism produced enzyme: the culture liquid consists of the culture liquid obtained in the second step, the nutrition liquid for secondary metabolism obtained in the third step, sterilized industrial waste water, sterilized dechlorination tap water; and 5) on-site continuous bacterial liquid addition. The method has the advantage that through the secondary metabolism produced enzyme, the system stability and the removal capability of a system on difficult-degradation organic matters are effectively improved.
Owner:宜态科水务技术(上海)有限公司

Sectional type consumer waste ecological burying simulating device

The invention discloses an ecological landfill simulation device for sectional type household garbage, comprising an upper end reactor, a hollow post and a lower end reactor which are connected with each other in the same axis line from top to bottom. The hollow post is in favor of the establishment of the environment of 'from aerobiosis to oxygen poor to anaerobic process' under the whole simulation environment, facilitates percolation liquid to have natural re-oxygenation when the percolation liquid drips in the hollow post, strengthens the nitrification and promotes the elimination of nitrogen in garbage dump bodies while methanogenesis is not interfered. With the operation of the simulation device, the nitrogen migration and transformation and the variation rule of nitrogen circulation function microbial community structure of the percolation liquid in artificial recharge process are identified and provide theoretical base for actual construction application. Meanwhile, after the disassembly of the hollow post in the invention, the upper end reactor and lower end reactor can be respectively assembled into general integral type garbage ecological landfill simulation devices, which are used for implementing garbage degradation research experiment in the artificial recharge process of the percolation liquid under general condition and greatly widens the application scope of the invention.
Owner:ZHEJIANG UNIV

Blue algae slurry dewatering process method

InactiveCN101254364AGood removal effectLess investmentCentrifugal force sediment separationSolid phasesAlgal bloom
The invention relates to a method for dewatering blue-green algae slurry by utilizing a horizontal spiral discharge sedimentary centrifuge, so as to change liquid phase algae slurry into a quasi solid phase algae cake, and enable the volume thereof to be greatly reduced. The invention belongs to the environmental protection technology field. The invention is characterized in that the blue-green algae slurry to be dewatered is pumped to centrifugal equipment, a flocculant is added to adjust the particle size of the solid substance, the blue-green algae residue is discharged through an unloading mouth after the centrifugal dewatering, and clear water is recycled through a pipeline. The centrifugal equipment adopts the horizontal spiral discharge sedimentary centrifuge. The horizontal spiral discharge sedimentary centrifuge utilizes the density difference of the quasi solid phase and the liquid phase of the suspension liquid to enable the solid phase substance to fast sedimentate on the wall of a rotary drum in the centrifugal force field produced by the high speed rotation of the rotary drum, so as to separate the solid and the liquid phases, the centrifuge continues to feed while continuously separating, and the separating medium and the residues are respectively discharged. The invention provides a practical and coordinate comprehensive method for the algal bloom treatment engineering in a lake, solves the problem that the transportation and the processing of the algae slurry are difficult, and improves the feasibility of the algae comprehensive utilization.
Owner:YUNNAN DELINHAI BIOLOGICAL SCI & TECH CO LTD
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