45results about How to "Increase bioconcentration" patented technology

The invention discloses a whole process low-oxygen aeration SBMBBR (sequencing batch moving bed biofilm reactor) synchronous denitrification and dephosphorization method and belongs to the technical field of sewage treatment. The method achieves synchronous denitrification and dephosphorization by adding suspension filling into the traditional SBR (sequencing batch reactor) to form an SBMBBR, controlling an organic load, a nitrogen and phosphorus load and a DO (dissolved oxygen) value in the reactor, performing staged culture and acclimation on an inoculum, and performing synchronous nitrification-denitrification and denitrification-dephosphorization on enriched denitrification polyphosphate accumulating bacteria and aerobic polyphosphate accumulating bacteria and by other approaches. The method achieves the synchronous denitrification and dephosphorization for low C/N (carbon/nitrogen) ratio sewage in the same reactor under a whole process low-oxygen aeration condition, has the advantages of a simple technology, simple operational control, a high sludge load, small floor area, low energy consumption, no need of an additional carbon source, stable denitrification and dephosphorization effects and the like. The method has very practical significance in simplifying the traditional denitrification and dephosphorization sewage treatment technology, improving the denitrification and dephosphorization effects and reducing the floor area and energy consumption, and is a sewage treatment technology with good application prospects.

The invention discloses a process for removing nitrite in aquaculture wastewater by immobilized nitrobacteria. The process comprises the preparation of nitrobacteria concentrated solution, the preparation of nitrobacteria immobilized particles, the activation of the nitrobacteria immobilized particles, the preparation of a nitrobacteria immobilized particle reaction packet and the removal of nitrite in the aquaculture wastewater by the reaction packet, wherein the preparation of the nitrobacteria immobilized particles comprises the steps that an aqueous mixture of polyvinyl alcohol, sodium alginate and silicon dioxide is heated and fully dissolved, and is evenly mixed so as to be made into embedding solution; when the embedding solution is cooled down to room temperature, embedding nitrobacteria concentrated solution is added in the embedding solution; after evenly mixed, the mixed solution is dripped into a crosslinking agent; the crosslinking agent consists of calcium chloride solution and saturated boric acid solution which are mixed according to the volume ratio of between 1 to 1 and 1 to 3; and finally, the immobilized particles are filtered out by a piece of gauze. The process has the advantages that nitrite has quick, continuous and stable degradation effect, and maintains high biological activity for a long time; moreover, the reaction packet can be used repeatedly and has the advantages of simple manufacturing method and low cost, thereby having enormous application prospect.

The invention relates to a process of employing recovery wastewater as recirculated cooling water, belonging to wastewater treating technique field, which comprises treating the pretreated wastewater with immobilized microbial treatment, making the COD,NH4-N reach the required water quality through the strong degradation by artificial sifted and strengthened specific high effective organism, and through further treatment to reach standard or demand of employing the wastewater as recirculated cooling water. The invention is characterized by the overcoming of the problems in current technology, small sludge production, no secondary settling tank, constructing cost saving by 20-30% and accommodation area saving; stable running, convenient management, short treating and retention time; high oxygen utilization coefficient, running cost saving; simple device structure which is suitable for improvement on the old process or connected with current process: low cost; no influence of the biological active after a time of running stop, which is particularly for operation in repair period or discontinue production.

The present invention belongs to the field of water processing biological filler preparing technology. Diatomite containing SiO2 and Al2O3 as material is processed through first crushing, sieving and high temperature activatation; then introducing microbe growth promoter and denaturation, and final drying to form the water purifying filler. The water purifying filler may be used widely for various domestic sewage and industrial effluent. Compared with available technology, the present invention has the features of easy-to-obtain material, simple preparation process, low cost, fast microbe growth, high water processing effect, etc.

The invention relates to a method for simultaneously removing insoluble organic matter, total cyanogen and total nitrogen in wastewater of an industrial park. The method comprises the following steps: wastewater enters a high-efficiency coagulated decyanation reactor to remove total cyanogen in the wastewater removed from the coagulated decyanation reaction; effluent from the coagulating reaction enters an aeration biofilter, ammonia and nitrogen in the wastewater is oxidized into nitrate nitrogen or nitrite nitrogen, and partial organic matters are oxidized and removed; effluent from the aeration biofilter flows into a denitrification filter tank, and nitrate nitrogen and nitrite nitrogen in the wastewater are denitrified into nitrogen and removed; effluent from the denitrification filter tank is filtered in a V-shaped filter tank and then enters an ozone catalytic oxidation tank, and insoluble organic matters are oxidized into small-molecular organic matters or mineralized in the presence of a catalyst. The method can be used for oxidizing and degrading organic matters while removing total cyanogen and total nitrogen in the wastewater to ensure that treated effluent can be emitted in standard, thus having an excellent market prospect.

The invention discloses a partition control and point-by-point water inflow enhanced nitrogen and phosphorus removal (A/O/A)-MBR integrated process and a system thereof. A partition control and point-to-point water inlet operation mode is adopted, and the low C/N ratio domestic sewage is sequentially subjected to treatment processes comprising anaerobic phosphorus release treatment, aerobic phosphorus absorption and nitrification treatment, precipitation water outlet, denitrification nitrogen removal treatment and MBR nitrification and decarburization treatment according to the time sequence in a sewage treatment system. Partition control is carried out on the phosphorus removal process and the nitrogen removal process, space separation of phosphorus removal bacteria and nitrifying bacteria is achieved, the good growth environment of microorganisms in respective systems is guaranteed, and the problems of mud age contradiction, nitrate influence, complete separation of HRT and SRT and the like existing in a traditional process are solved; meanwhile, the problem of energy consumption of sewage treatment operation such as carbon source feeding is solved by adopting a point-by-point water inlet mode, and the purpose of efficient nitrogen and phosphorus removal is achieved. Meanwhile, the process has the advantages of good effluent quality, simple process, small occupied area, convenience in operation and the like.

The invention discloses a low-carbon source two-stage MBR (Membrane-Bioreactor) enhanced nitrogen and phosphorus removal method for city sewage. The method is characterized by being a continuous flow nitrogen and phosphorus removal process with an adjusting tank, an anaerobic tank, a settling pond I, an aerobiotic MBR tank I, an anoxic pond, a settling pond II and an aerobiotic MBR tank II which are connected in series. The method comprises the following steps: firstly, feeding sewage into the anaerobic tank for anaerobic phosphorus release, further feeding the sewage into the settling pond I for sludge-water separation, feeding supernate obtained after settling into the aerobiotic MBR tank I for nitration and degradation of a part of organic matters, feeding settled sludge and a nitration liquid after aerobiotic nitration into the anoxic pond for denitrification phosphorus removal, feeding a part of a mixed liquid after anoxia into the settling pond II for settling sludge removal so as to remove phosphorus, feeding another part of the mixed liquid and the supernate of the settling pond II into the aerobiotic MBR tank II for further aerobiotic nitration and phosphorus removal, and finally filtering and discharging water by using an MBR membrane component. Due to two stages of aerobiotic MBRs, complete separation of nitration bacteria and phosphorus-accumulating bacteria can be achieved, the nitrogen and phosphorus removal effect can be improved, the process is simple in procedure and convenient to operate, and continuous water discharge can be achieved.

The invention relates to an enhanced nitrogen and phosphorus removal process adopting a mud water separation anaerobic/anoxic-membrane bioreactor and belongs to a nitrogen and phosphorus removal process for environmental sewage. The enhanced nitrogen and phosphorus removal process adopting the mud water separation anaerobic/anoxic-membrane bioreactor is characterized in that an anaerobic/anoxic-membrane bioreactor provided with a built-in three-phase separator and a membrane bioreactor form a two-sludge system, so that a nitrogen and phosphorus removal function is enhanced. The enhanced nitrogen and phosphorus removal process comprises the following steps: firstly, causing sewage to enter an anaerobic/anoxic reactor, releasing phosphorus under the anaerobic condition, carrying out mud water separation on the sewage by virtue of the three-phase separator, and carrying out aerobiotic nitrification on supernate automatically flowing to the membrane bioreactor; after nitrification is finished, feeding a nitrification liquid into the anaerobic/anoxic reactor in a circulating manner and carrying out denitrifying phosphorus removal, circulating supernate of the anaerobic/anoxic reactor to an anaerobic membrane bioreactor, feeding water and draining membrane filtration water synchronously after circulation is finished, and finally discharging rich phosphorous sludge for realizing phosphorus removal. The enhanced nitrogen and phosphorus removal process adopting the mud water separation anaerobic/anoxic-membrane bioreactor has the advantages that effective separation of phosphorus-accumulating bacteria and nitrifying bacteria is realized, denitrifying phosphorus removal efficiency is enhanced, carbon source is saved, operating cost is reduced, a technological process is simple, and operation is easy.

The invention discloses an industrial circulating water processing and production device. The device comprises a water inlet pump, a membrane bioreactor, a circulating pump, a photocatalytic oxidation reactor, a magnetization sterilization reactor and a water outlet pump. The membrane bioreactor comprises a first membrane module and a second membrane module in the bioreactor. A water outlet end of the first membrane module is connected to a photocatalytic oxidation reactor through the circulating pump. A movable separation plate is arranged between the first membrane module and the second membrane module. A water outlet end of the photocatalytic oxidation reactor is connected to the magnetization sterilization reactor. A water outlet end of the magnetization sterilization reactor is connected to a water outlet pump through a first valve and is connected to the membrane bioreactor through a second valve. A water outlet end of the second membrane module is connected to the water outlet pump through a third valve. The invention also discloses a production method using the production device. The method and device realize fast and efficient purification of industrial circulating water and killing of bacteria in industrial circulating water, does not produce negative influence on the quality of industrial circulating water and is safe and environmentally friendly.

The invention relates to a biological strengthening treatment water system for large specific surface area particles, which comprises a biological strengthening treatment subsystem, a continuous dynamic sand filtration subsystem and a dynamic membrane separation and purification subsystem, the subsystems are successively connected through water pipes to form a circular water treatment system, thebiological strengthening treatment subsystem comprises raw water and biological strengthened large specific surface area particles, a bio-solution after biochemical treatment carries large specific surface area particles and enters into the continuous dynamic sand filtration subsystem, large specific surface area particles in water is filtered and returned in the biological strengthening treatment subsystem, the filtered sand filtration liquid enters in the dynamic membrane separation and purification subsystem, impurities in water are separated by a dynamic membrane formed by large specific surface area particles, partial large specific surface area particles are conveyed in the biological strengthening treatment subsystem after back flushing, the other part of the large specific surfacearea particles and newly added large specific surface area particles newly form the dynamic membrane, so that the technical problem in the prior art that large specific surface area particles can notbe separated from water is solved.

The invention discloses an in-situ circulating treatment system for landscape lake water, and belongs to the technical field of landscape water purification. The system is composed of a surface runoff collecting tank, an ecological percolation tank, an enhanced purification unit, a circulating power system and a landscape lake water main body water area, wherein the enhanced purification unit consists of a bottom aeration device and a biological purification unit; the circulating power system consists of a circulating power pump and a circulating pipeline; an ecological box and a multi-stage aeration device are arranged in the landscape lake water main body water area; the surface runoff collecting tank is positioned at the lowest position of a landscape lakeshore terrain and is communicated with the ecological percolation tank; the ecological infiltration tank is arranged along the inner side of a landscape lakeshore; the enhanced purification unit is arranged near the communicating part of the surface runoff collecting tank and the ecological percolation tank; and the circulating power system is located in the center of the landscape lake body water area. The ecological percolation tank, a biological floating bed and the ecological box are all made of sponge concrete and have good water permeability, air permeability and water binding capacity. The system is suitable for various urban landscape lakes, realizes in-situ treatment of landscape lake water, improves the quality of the landscape lake water and increases the life happiness index of residents according to the water quality characteristics of the landscape lake water and the green and ecological design concepts, and has the advantages of low operation cost, easiness in control, environment friendliness and the like.

Aiming at the characteristics of large difference of rural sewage generation conditions, low sewage generation amount, large collection difficulty, high treatment cost and the like, the invention provides a treatment system and a treatment method for resource recovery and recycling of rural dispersed sewage, the rural sewage is subjected to the processes of pretreatment, integrated membrane concentration and the like to produce high-purity water, the water yield is low, the water quality is higher, the application is wider, the concentrated liquid is subjected to quality separation through the anaerobic treatment unit and then is subjected to resourceful treatment, the effluent can be recycled to a system or used for agricultural irrigation, one part of biogas is fed into a biogas cabinet to be stored after being subjected to impurity removal and used for a biogas boiler to provide a heat source for rural production and life, and the remaining part of biogas is recycled to the system for stirring so that in-situ resourceful treatment of rural sewage is highly realized.