19results about How to "Increase dissolved oxygen concentration" patented technology

The invention provides a freshwater fish recirculating aquaculture system and method, and relates to the technical field of aquaculture. The culture system comprises a culture pond, a microfilter, a biological pond, a water storage pond, aeration equipment, disinfection equipment and oxygen production equipment. The freshwater fish recirculating aquaculture system has the advantages that the heights of the culture pond, the microstrainer, the biological pond and the water storage pond of the culture system are sequentially reduced, the culture pond, the microstrainer, the biological pond and the water storage pond are sequentially connected through the water return pipe, and the bottom of the water storage pond is connected with the water inlet pipe through the circulating water pump. Therefore, the running energy consumption of the whole system can be reduced, and the breeding cost is reduced; aeration equipment is arranged in the water storage tank, oxygen generation equipment connected with the aeration equipment can pump high-concentration oxygen into the water storage tank to improve the concentration of dissolved oxygen in water, water is injected into the culture pond at a certain incident angle through water outlet holes in a water inlet branch pipe in the water storage tank, a stable flow field is formed in the water in the culture pond, and the culture density of the culture system is improved.

The invention relates to the technical field of sewage treatment. The invention discloses an anaerobic ammonium oxidation bacteria, short-cut nitrifying bacteria and microalgae coupling system and a domestication method thereof, which are characterized in that three autotrophic microorganisms with different oxygen requirements are sequentially domesticated by a biological filler according to a sequence of an inner layer, a middle layer and an outer layer to form dissolved oxygen gradient region change. Wherein the microalgae form an oxygen production area in the outer photosynthesis, and the dissolved oxygen concentration in the area is the highest. Short-cut nitrifying bacteria domesticated on the middle-layer biological filler consume oxygen, and the concentration of dissolved oxygen is lower than that of dissolved oxygen in the outer-layer biological filler area. The dissolved oxygen in the inner-layer biological filler area can reach the lowest level, so that the anaerobic ammonium oxidation bacteria can survive suitably, and the stable denitrification of anaerobic ammonium oxidation is ensured. Therefore, the biological membrane obtained by the domestication method provided by the invention is more stable, the mass transfer of the dissolved oxygen is more uniform than that of the traditional mechanical point source aeration, and the influence of the dissolved oxygen on the interior is smaller, so that the treatment effect is more stable. The anaerobic ammonium oxidation bacteria, short-cut nitrifying bacteria and microalgae coupling system does not need aeration, does not need additional organic carbon sources, can absorb CO2 to realize negative emission, is energy-saving and efficient, meets the requirements of dual carbon and green water plant transformation in China, and has important utilization value.

The utility model provides a backflow type miniature artificial wetland system which is provided with an accommodating cavity formed by walls, and the accommodating cavity is divided into an adjusting tank unit, a first-stage vertical flow wetland unit, a second-stage vertical flow wetland unit and a backflow tank unit which are adjacent in sequence through a plurality of partition plates, an inner-layer bottom plate of the containing cavity is provided with a slope inclining downwards in the direction from the adjusting tank unit to the backflow tank unit, a first cover plate is installed at the top of the adjusting tank unit, a second cover plate is installed at the top of the backflow tank unit, and the first cover plate and the second cover plate are connected to the wall body in a turnover mode. According to the utility model, a plurality of units are sequentially separated and connected, so that the artificial wetland is small in occupied area and efficient in treatment, and the pollutant removal capacity of the wetland is improved.

The invention discloses an internal aeration type organic wastewater treatment device, which is characterized by comprising an electrolytic bath, an aeration device, a water tank, a water inlet pipe, a water outlet pipe, a water outlet pipe and a water outlet pipe, and the electrolytic bath is internally provided with an anode plate and a cathode plate; the aeration device is arranged close to the anode plate; a positive electrode and a negative electrode of the direct-current power supply are respectively connected with the positive plate and the negative plate; an air pump; wherein a cavity is formed in the negative plate, and the cavity is connected with the air pump, so that air is introduced into the negative plate through the air pump. The device is simple in structure, the technological process is simplified, energy consumption and cost are reduced, and the removal efficiency of organic pollutants can be improved.

The invention relates to the technical field of sewage treatment, in particular to an intelligent control system and method based on a five-section Bardellpho process, and the intelligent control system comprises a water inlet module, an aeration module, a backflow module, a sludge discharge module and a control module; the control module is respectively in communication connection with the water inlet module, the aeration module, the backflow module and the sludge discharge module; a first aerobic tank is divided into a low-oxygen area and a high-oxygen area, and ammonia nitrogen analyzers are mounted at the tail end of the high-oxygen area of the first aerobic tank and the tail end of a second aerobic tank respectively and used for collecting ammonia nitrogen concentrations of corresponding areas; dO monitors are respectively arranged at the tail ends of the low-oxygen zone of the first aerobic tank, the high-oxygen zone of the first aerobic tank and the second aerobic tank and are used for collecting the DO concentration of the corresponding zones. Based on the intelligent control system, the intelligent control method provided by the invention accurately controls the operation parameters to be in an optimized state. According to the invention, the effect of strengthening endogenous denitrification and efficient nitrogen removal is realized, refined operation is realized, and the operation efficiency is improved.

The present invention discloses a sewage treatment optimization operation device based on the A2O process, and specifically relates to the technical field of sewage treatment optimization operation devices, including a shell, a partition receiving component is fixedly installed at the lower end of the shell, an aerobic component is fixedly installed on the bottom wall of the shell, an anoxic tank is fixedly connected to the middle of the inner surface of the shell through a plurality of connecting rods, and an anaerobic tank is fixedly connected to the upper part of the inner surface of the shell through a plurality of connecting rods. The sewage treatment optimization operation device based on the A2O process described in the present invention can fully stir the sewage stored therein by using the power generated during aeration, thereby increasing the dissolved oxygen concentration, and at the same time, the aerobic component can disperse the bubbles generated during aeration, so that the gas can be evenly distributed in the sewage, and when the aerobic component performs aeration, the upward force of aeration can be used to push the residue generated on the surface of the sewage to the surroundings, thereby improving the subsequent processing efficiency.

The invention relates to an in-situ remediation method for a water body polluted by rare earth / manganese ore mining, which comprises the following steps: domesticating and screening microalgae through the polluted water body, and treating sewage by adopting the screened dominant microalgae. A microalgae floating bed containing screened and propagated microalgae and a slow-release phosphorus source is suspended on the water surface, the microalgae floating bed is a microalgae bioreactor, and only water can pass through the microalgae floating bed, so that the microalgae continuously perform material exchange with the water body in the microalgae floating bed, ammonia nitrogen in the sewage is assimilated and removed, the pH of the sewage is increased, and the sewage treatment effect is improved. The acidic sewage is gradually converted into a neutral water body, the pollution degree of the water body is relieved, and the water body is repaired; the microalgae are kept in the microalgae floating bed, so that the microalgae cannot pollute a water body, and the microalgae can be taken out from the microalgae floating bed after growing to a certain amount. According to the method, the surface illumination of the polluted water body is fully utilized, other substances are not needed except the slow-release phosphorus source, and the method is low in technical cost and free of pollution.

The invention relates to the technical field of microbial fertilizer preparation, and particularly discloses a composting device for microbial fertilizer preparation. The composting device comprises a rack, a box body is welded to the rack, a temperature adjusting box is welded to the bottom end of the box body, the outer wall of the temperature adjusting box is attached to the outer wall of the box body, and a water inlet pipe is arranged at the bottom end of one side of the temperature adjusting box; the upper side wall of the other side of the temperature adjusting box is connected with a water outlet pipe. Water enters the temperature adjusting box from the water inlet pipe, absorbs heat generated by microbial fertilizer preparation and then is discharged from the water outlet pipe to adjust the temperature of the box body, some microorganisms can be stored for a long time at low temperature, the temperature adjusting box can be used for storing microorganism samples, and the storage time of the microorganisms is prolonged; the stirring of microorganism raw materials has the advantages that the solubility of oxygen can be improved, the solubility of oxygen in liquid can be increased through stirring, it is ensured that aerobic microorganisms obtain enough oxygen, and growth and metabolism of the aerobic microorganisms are promoted.

The present invention discloses an integrated online purification and monitoring system for emulsified cutting fluid. The system can realize online purification of cutting fluid, measurement of true concentration, pollution aging evaluation and precise operation and maintenance of stock solution replenishment, thereby achieving quality stability of processed products and consistency of products of different batches; by integrating various online sensors, the physical and chemical properties of cutting fluid can be measured in real time, and the effective concentration and degree of pollution aging can be output and quantified, replacing traditional offline detection, thereby improving the authenticity and real-time performance of detection. The concentration of cutting fluid can be effectively controlled by replenishing stock solution online, and the effective concentration can be controlled within ±1% of the set value, avoiding concentration fluctuations and improving the quality stability of product production.

The utility model discloses a kind of based on ultrasonic wave cooperates coarse coconut bran matrix's soilless cultivation breeding acceleration device, comprising: matrix processing unit, ultrasonic atomization system and intelligent control unit.In matrix processing unit, coarse coconut bran is formed after layer structure by steam puffing, pyroligneous acid modification, probiotic solidification, bottom layer is coconut shell charcoal particle, middle layer is modified coarse coconut bran matrix, surface layer is carbonized rice hull.Ultrasonic atomization system is composed of three-dimensional spiral flow guide pipe around matrix, high-frequency piezoelectric ceramic atomization piece group and nano bubble generating device.Intelligent control unit can dynamically adjust ultrasonic frequency and working mode, simulate day-night rhythm to adjust ultrasonic and illumination.By optimizing matrix structure and ultrasonic atomization technology, nutrient solution is evenly covered root system with micron grade fog particle, while nano bubble promotes dissolved oxygen concentration, solve the problem that traditional fog culture droplet particle size is big, root system is insufficient in oxygen supply.

An aeration device suitable for aquaculture ponds with different water body heights comprises an air inlet main pipe and a plurality of sets of nanometer aeration pipes, the air inlet main pipe is arranged along the edge of the top end of an aquaculture pond and provided with an air inlet, and two air inlet branch pipes communicated with the air inlet main pipe are fixed to each side wall of the aquaculture pond. A group of nano aeration pipes are communicated and connected between the two air inlet branch pipes of each side wall, each group of nano aeration pipes comprises a plurality of nano aeration pipes which are arranged in parallel up and down at intervals, two ends of each nano aeration pipe are respectively communicated and connected with the corresponding air inlet branch pipes, and each nano aeration pipe is provided with an aeration pipe control valve; a plurality of aeration holes are densely distributed in each nano aeration pipe. When the height of a water body in the aquaculture pond exceeds a certain nano aeration pipe, the nano aeration pipe and the aeration pipe control valves on all the nano aeration pipes below the nano aeration pipe can be opened, so that the water body in the aquaculture pond is fully aerated, the dissolved oxygen concentration of the water body is improved, and the dissolved oxygen content in the water body meets the requirements of fish fries.

This utility model relates to a wastewater treatment device combining photovoltaic power generation, applicable to the field of wastewater treatment. It includes a wastewater tank with two drain pipes fixedly connected to its outer surface. A cross-shaped mounting plate is fixedly connected to the upper end of the wastewater tank, and a column rotatably passes through the inner wall of the mounting plate. The lower end of the column is rotatably connected to the inner bottom wall of the wastewater tank. A motor is fixedly connected to the upper end of the mounting plate, and a drive gear is fixedly connected to the output end of the motor. From top to bottom, a photovoltaic panel, a storage box, a driven gear, and a mounting block are fixedly connected to the outer surface of the column. The drive gear and the driven gear mesh, combining photovoltaic power generation with wastewater treatment. By changing the position of the photovoltaic panel, the positions of multiple aeration pipes are changed, allowing the aeration pipes to aerate different locations in the wastewater tank, effectively increasing the dissolved oxygen concentration in areas far from the aeration pipes, thereby effectively improving the uniformity of dissolved oxygen distribution and enhancing the wastewater treatment effect.

The method of realizing autotrophic denitrification and biological phosphorus removal of urban sewage by A / O-MBBR without internal circulation and ultra-short hydraulic retention time belongs to the technical field of biological treatment of urban sewage. The steps of the present invention are as follows: (1) inoculating the residual sludge of the sewage treatment plant, the influent is urban sewage, and operating in anoxic / aerobic mode in a continuous flow reactor without internal circulation and with ultra-short HRT; realizing short-range nitrification by controlling the sludge age and the residual ammonia nitrogen in the effluent; (2) rapid self-enrichment Anammox and stable operation stage, adding blank filler with a volume filling ratio of 15%-25% to the ultra-short HRT reactor, the filler quickly realizes biofilm under high operating load conditions and realizes self-enrichment of anaerobic ammonia-oxidizing bacteria in the biofilm, and finally realizes stable, efficient and cost-effective autotrophic denitrification and biological phosphorus removal of urban sewage by controlling the dissolved oxygen in the aerobic zone.

The invention discloses a preparation method and application of a nano zero-valent iron loaded recycled aggregate composite material for an artificial wetland substrate, and relates to the technical field of water pollution treatment. NZVI is loaded on recycled aggregate, so that agglomeration and oxidation of the nZVI can be effectively prevented by virtue of a porous structure of the recycled aggregate, and the dispersity and stability of the nZVI are improved; further, the denitrification capability of the constructed wetland is enhanced. The method is used for constructed wetland sewage treatment. By using the recycled aggregate, the constructed wetland using the nano zero-valent iron loaded recycled aggregate composite material as a matrix has better denitrification capacity. Resource utilization of the building waste can be effectively achieved, natural resources and energy are saved, and the method has high economic prospects and environmental benefits.

The invention relates to the technical field of livestock farm wastewater treatment, and provides a beef cattle livestock farm wastewater treatment device which comprises a treatment pond. According to the device, a first screw rod drives a moving frame to slowly reciprocate in the treatment tank, the moving frame drives a moving baffle and dispersing scraping teeth to move, the moving baffle drives fixed dispersing blades to move, and the moving baffle and a filter plate are matched to block bubbles, so that the retention time of the bubbles in the treatment tank is prolonged, and the flowing speed of the bubbles is reduced; the concentration of dissolved oxygen in the wastewater is increased, so that microorganisms have enough time to absorb more oxygen, the metabolic activity of the microorganisms is accelerated, the treatment efficiency is improved, the wastewater and bubbles can be stirred by reciprocating movement of the movable baffle and the fixed dispersion blades, and the microorganisms can be uniformly distributed and fully absorb oxygen to decompose the wastewater; after moving to one end, the movable baffle is in extrusion contact with the treatment tank, and the movable baffle slides to the other side of the movable frame after being pressed, so that the bubbles are further blocked.

The invention belongs to the field of membrane modules, and particularly relates to a pulse type aeration head, a use method, a membrane module and a sewage treatment method. The pulse type aeration head comprises an aeration head, an air inlet chamber arranged in the aeration head and a plurality of pulse generators arranged in the aeration head; the aeration head is divided into a plurality of aeration chambers by partition plates; a pulse generator is arranged in each aeration chamber; a plurality of air distribution holes are formed in the air inlet chamber; one end of the pulse generator is positioned at the highest position of the aeration chamber, and the other end of the pulse generator is communicated with an air outlet hole formed in the aeration disc. The pulse aeration head disclosed by the invention can realize a pulse type aeration effect, and can realize a high-strength flushing effect under a low air flow; high dissolved oxygen efficiency can be realized; the problem that air flow is influenced by dirt blockage is avoided; the method can be used in the fields of gas scrubbing process of the membrane module, aerobic and oxidized oxygen dissolving process and the like.

The utility model relates to an oxygenation device for sewage treatment technical field, concretely is a kind of light quantum sewage treatment vibration oxygenation device, including jar body, microporous aeration plate and vibration subassembly, vibration subassembly is fixedly installed in jar body inside, vibration subassembly includes elastic vibration piece, electromagnetic vibrator and support ring, support ring is fixedly connected with jar body inside surface, multiple elastic vibration piece one end is fixedly connected with support ring, multiple elastic vibration piece other end is connected to electromagnetic vibrator, multiple electromagnetic vibrator is commonly connected with vibration ring, multiple microporous aeration plate is fixedly connected with jar body bottom surface, the utility model is through microporous aeration plate and vibration subassembly, make water body produce high frequency oscillation, destroy bubble surface tension to make water bubble smaller, greatly increase gas-liquid contact area, simultaneously through agitator plate drive water body rotation to make bubble and waste liquid uniform mixing, to make the oxygen in bubble more easily dissolved into water body, to further improve dissolved oxygen concentration.

The utility model relates to the technical field of sewage treatment equipment, and discloses sewage deodorization equipment for sewage plant treatment, which comprises a tank body I and a tank body II, the left side of the tank body I is fixedly connected with a sewage pipe, the front side of the tank body I is fixedly connected with a feed pipe, the bottom of the tank body I is fixedly connected with a liquid outlet pipe, and the bottom of the tank body II is fixedly connected with a water outlet pipe. An aeration pipe is fixedly connected to the inner bottom of the first tank body, the input end of the aeration pipe is fixedly connected to the left side of the first tank body, a second connecting pipe is fixedly connected to the right side of the first tank body, and a first connecting pipe is fixedly connected to the left side of the second tank body. According to the device, gas is purified to the maximum extent through the activated carbon box, secondary pollution of the gas to the environment is avoided, meanwhile, after long-time filtering, the rotary knob is rotated to drive the gear to rotate, the gear drives the rack to slide out of the middle of the ejector rod, then the activated carbon box is rapidly replaced, and the filtering effect of the activated carbon box is guaranteed.

The manganese removal and water purification filter comprises an iron removal tank and a manganese removal tank, the top of the iron removal tank is connected with a raw water injection pipe, the upper portion of a tank body of the iron removal tank is connected with an ozone injection pipe, activated carbon particles are laid at the bottom of an inner cavity of the iron removal tank, and the iron removal tank is connected with the manganese removal tank through a communicating pipe. One end of the communicating pipe is connected with the lower portion of the iron removal tank body, the other end of the communicating pipe is connected with the top of the manganese removal tank, a first porous filter plate used for preventing activated carbon particles from entering the communicating pipe is arranged in the iron removal tank, a first water pump is installed on the communicating pipe, the upper portion of the manganese removal tank body is connected with an oxygen injection pipe, and manganese sand is laid at the bottom of an inner cavity of the manganese removal tank. A water outlet pipe is connected to the lower portion of the manganese removal tank body, a second porous filter plate used for preventing manganese sand from entering the water outlet pipe is arranged in the manganese removal tank, and a second water pump is installed on the water outlet pipe. Divalent iron in raw water is firstly removed to prevent the divalent iron from hindering oxidation of divalent manganese, so that the aim of improving the manganese removal effect of the water plant is fulfilled.