54results about How to "Strong resistance to water impact" patented technology

An anti-impact multiplying combination coking wastewater treatment technique relates to a treatment method of coking wastewater. The coking wastewater is first qualified by a physical-chemical pretreatment to improve biodegradable property of wastewater; the composite technology of a biological carrier of active sludge is adopted to do anaerobic/hypoxia/aerobic decarbonization/aerobic nitrification biochemical combination treatment; suspended or floating folding ball-shaped fillings are arranged in biochemical reactors and when micro organism traits are abnormal or a great amount of foams existing in the reactor, micro organism active incentive agents are added to the reactor in interval to improve active sludge traits and organism film quantity; finally the water is treated by a physical-chemical advanced treatment to reach a top grade standard. The invention not only strengthens the removal of COD, ammonia-nitrogen, volatile phenol and other pollutants in the coking wastewater by biochemical treatment but also resists serious water quality impact and has the advantages of quick system startup, less foams in an aeration tank, small occupying space, low operation cost and stable and effective treatment to coking wastewater.

The invention relates to a spiral symmetrical flow anaerobic reactor, which comprises a water distribution region, a reaction region and a three-phase separation region, wherein the water distribution region, the reaction region and the three-phase separation region are respectively arranged on a reactor from bottom to top, the water distribution region comprises a bottom plate and a lower post body, the upper surface of the bottom plate is connected with the lower post body, the reaction region comprises a middle post body, the middle post body comprises a spiral flow reaction region and a free airspace region, a back flow pipe is arranged in the free airspace region, and a case of the three-phase separation region is respectively provided with a cone body, an upper post body and a coverplate from bottom to top. The spiral symmetrical flow anaerobic reactor has the advantages that the water distribution is uniform, the blockage is not easy to occur, the spiral symmetrical flow anaerobic reactor trends to the flat push flow state, the treatment efficiency is high, the liquid solid mass transfer effect is good, the organic load impact resistance capability is high, the intermediate product suppression is reduced, and the particle sludge and the recycled alkalinity can be effectively maintained.

The invention relates to an ecological net packing device, which consists of rope nets, combined packing units, floating balls, sleeves, fixing rods and submerged plants. The combined packing units are fixed on knots of the rope nets; a sandwich structural mode is adopted, and the matched submerged plants are sandwiched and fixed between two rope nets; the upper ends of the rope nets are connected with the floating balls, and two sides of the rope nets are fixedly connected with the sleeves through side fixing lines; and in the using process, fixing rods are inserted into the sleeves on the two sides, and the two fixing rods are respectively inserted into water body riverbed or lakebed so as to fix the ecological net packing in water. The ecological net packing device has the characteristics of good water quality purifying effect, simple structure, convenient processing and transportation, no blockage or caking, simple installation, convenient management and maintenance, strong current impact resistance and the like, and can be used for in-situ purification of natural water bodies such as riverways and lakes and artificial water bodies.

The invention discloses a mechanical internal circulation jet-flow anaerobic reactor and a wastewater treatment method thereof, and belongs to the technical field of biological sewage treatment. The mechanical internal circulation jet-flow anaerobic reactor comprises a reactor tank body, a multi-phase separator, a water outlet weir and an internal circulation jet-flow device, wherein the internal circulation jet-flow device comprises an upper part and a lower part; the upper part comprises a jet-flow hole, a diffusion hole, a flow guide pipe and a flow stabilization hole; the lower part comprises a motor, a rotary shaft and high-speed blades. The wastewater treatment method comprises the following steps: forming a fluidized bed layer, forming a suspended bed layer, separating a separation region and discharging water from the water outlet weir. Due to the use of the internal circulation jet-flow device, the difficult problems of low treatment load, instable effect and relatively narrow application range in the treatment process of an existing conventional anaerobic reactor are solved; the mechanical internal circulation jet-flow anaerobic reactor has the advantages of high treatment load, good water impact resistance, high concentration of biological toxicity resistance matters, quick starting and the like.

The invention discloses ammonia oxidizing bacteria fixed-type bioactive fillers, and preparation and an application thereof, and belongs to the technical field of water treatment. Bioactive fillers are each composed of a carrier and an embedding body loaded with ammonia oxidizing bacteria, and the fillers are fixed on a prefabricated frame to form the fixed-type bioactive fillers; each carrier is prepared by sewing multiple layers of polyvinyl alcohol non-woven fabrics and one layer of textile fabric; each embedding body is formed by boric acid cross-linking immobilization of an embedding liquid; the embedding liquid is formed by mixing an ammonia oxidizing bacteria concentrated solution and a polyvinyl alcohol solution. Each carrier is soaked in the embedding liquid, through boric acid secondary cross-linking, the non-woven fabrics and the embedding body are firmly bound together, the embedding body penetrates through textile fabric meshes to form an overall riveting fixing structure and does not easily fall off, and the good tensile property of the textile fabric improves the overall stability of the bioactive filler. The prepared ammonia oxidizing bacteria fixed-type bioactive fillers not only solve the problems that the ammonia oxidizing bacteria are difficult in advantage establishment, easy to lose and the like, but also improve the processing ability of a reactor, and have a good application prospect.

The invention relates to a photo-Fenton-positive permeation integrated device for treating organic wastewater difficult to biodegrade and a using method of the device. The device comprises a photo-Fenton unit and an immersed positive permeation unit. The method for treating the water by using the device comprises the photo-Fenton process and the positive permeation process, and while organic pollutants are effectively degraded or converted by using the photo-Fenton unit, the organic pollutants which are not completely degraded or converted in the photo-Fenton process are permselectively intercepted by using a positive permeation membrane. The immersed positive permeation unit adopts an immersed positive permeation structure, a water inlet end circulating pump or an inlet water tank is notneeded, the overall structure is compact, the energy consumption is low, and the photo-Fenton-positive permeation integrated device is easily combined with other technologies or devices. Active substances generated by the photo-Fenton unit are used up in the pollutant degradation and converting process and in the positive permeation unit migration process, the strong oxidizing property of the photo-Fenton unit cannot affect the stability of the membrane, the wastewater treatment efficiency is high, the wastewater treatment effect is good, and the device is suitable for application and popularization.

The invention provides a three-dimensional carbon aeration electrode for efficiently producing hydrogen peroxide, and relates to the technical field of environmental engineering. Aiming to solve the problems that currently, most cathodes for producing the H2O2 through electrocatalysis are complicated in preparation, the cost is high, the mass transfer efficiency is low, the oxygen utilization rateis low, the electrode stability is poor, and the structure of a reactor is complicated, the method comprises the steps that the three-dimensional carbon aeration electrode is installed in a reactor for producing the hydrogen peroxide through electrocatalysis, oxygen-containing gas is continuously introduced into a gas pipe, the oxygen-containing gas enters three-dimensional channels of the three-dimensional carbon electrode through a plurality of soft pipes and is diffused to the outside through the three-dimensional channels of the three-dimensional carbon electrode to enter an electrolyte of the reactor, and finally, the oxygen-containing gas passes through the reactor for producing the hydrogen peroxide through electrocatalysis, and the process of efficiently producing the hydrogen peroxide by using the three-dimensional carbon aeration electrode is completed. The three-dimensional carbon aeration electrode for efficiently producing the hydrogen peroxide can be obtained.

The invention discloses anaerobic ammonia oxidizing bacteria fixed-type bioactive fillers, and preparation and an application thereof, and belongs to the technical field of water treatment. Fillers are each composed of a carrier and an embedding body and are fixed on a prefabricated frame to form the fixed-type bioactive fillers; each carrier is prepared by sewing multiple layers of polyvinyl alcohol non-woven fabrics and one layer of textile fabric; the embedding bodies are formed by boric acid cross-linking immobilization of an embedding liquid; the embedding liquid is formed by mixing an anaerobic ammonia oxidizing bacteria suspension and a polyvinyl alcohol solution. Each carrier is soaked in the embedding liquid, through boric acid secondary cross-linking, the non-woven fabrics and the bacteria embedding body are firmly bound together, the embedding body penetrates through textile fabric meshes to form a riveting fixing structure and does not easily fall off, and the good tensile property of the textile fabric improves the overall stability of the bioactive filler. The prepared bioactive fillers not only solve the problems that anaerobic ammonia oxidizing bacteria are low in concentration, are easy to lose and the like, but also have the advantages of strong strength, good stability, strong water flow impact resistant ability and the like, shorten the reaction start-up time, and have broad application prospects.

The invention relates to a biological rotating disc. The biological rotating disc comprises a contact reaction tank, a rotating shaft and a plurality of microporous disc sheets, wherein the two ends of the rotating shaft are separately rotatably arranged on a first end face and a second end face, which are opposite, of the contact reaction tank, the microporous disc sheets are sequentially fixed to the rotating shaft along a length direction of the rotating shaft and are of radiating arrangement in a cross section direction of the rotating shaft, disc faces of the microporous disc sheets are all arranged parallel to the rotating shaft, and the rotating shaft is connected with a driving device. According to the biological rotating disc disclosed by the invention, microbes and activated sludge are high in adhesive power, the microbes and the activated sludge in the disc are high in growth quality, and the sewage treatment efficiency is high.

The invention discloses a string-insertion bundle-shaped filler device for rural sewage treatment. The device comprises a filler frame and bundle-shaped elastic filler, and the filler frame is composed of a single hollow annular frame or two hollow annular frames and support plates; when the filler frame is provided with the single hollow annular frame, multiple layers of support plates are vertically arranged in the single hollow annular frame in parallel; when the filler frame is provided with the two hollow annular frames, multiple layers of support plates vertically arranged in parallel are fixed between the two hollow annular frames; through holes with the string-insertion bundle-shaped elastic filler are formed in all layers of the support plates, and the device is integrally formedand provided with an identifier for measuring the water level; on the basis of meeting demands of existing known technologies, the device has the advantages of being short in membrane-forming time, high in water flow impact resistance, convenient to place and maintain, capable of measuring the water level and the like.

The invention belongs to the technical field of cofferdam construction, and particularly relates to a combined temporary cofferdam for crossing a river channel and a construction method of the combined temporary cofferdam. The combined temporary cofferdam comprises a temporary cofferdam with a square cross section, the two ends of the temporary cofferdam correspond to the two banks of the river channel, and two inclined struts are arranged at the right-angle position of the temporary cofferdam; a square steel enclosing purlin is arranged on the inner side of the temporary cofferdam, a straight support is arranged in the middle of the square steel enclosing purlin and is parallel to the width direction of the square steel enclosing purlin, the temporary cofferdam is double-row cofferdams, each row of cofferdams are the same in structure, the two ends of each row of cofferdams are timber pile type cofferdams, and the middle of each row of cofferdams is a steel sheet pile type cofferdam; corresponding joints of the timber pile type cofferdams and the steel sheet pile type cofferdam are connected by welding seamless steel pipes and Z-shaped steel sheet piles; and a timber pile enclosing purlin is arranged on one side of the upper part of each row of timber pile type cofferdams correspondingly, and more than two opposite-pulling steel bars are bundled between a pair of timber pile enclosing purlins on the two rows of timber pile type cofferdams. Therefore, the temporary cofferdam is easy and convenient to construct, good in waterproof and anti-seepage performance and high in water flow impact resistance.