6results about How to "High oxygen mass transfer efficiency" patented technology

This invention provides a multi-stage, multi-angle, rapid diffusion oxygen dissolving three-dimensional non-clogging microbubble aerator. An air inlet pipe and an air pipe are sequentially connected along the air inlet direction. A rapid microbubble cutting and diffusion oxygen dissolving unit is fitted outside the air inlet pipe. An inner cylinder and an outer cylinder are sequentially fitted outside the air pipe from the inside to the outside. The inner cylinder has a first inner cylinder section, a second inner cylinder section, and a third inner cylinder section sequentially along the air inlet direction. A medium-sized bubble cutting and diffusion oxygen dissolving unit is installed on the outer wall of the first inner cylinder section, a large bubble cutting and diffusion oxygen dissolving unit is installed on the outer wall of the second inner cylinder section, and an air guiding unit is installed on the outer wall of the third inner cylinder section. An air diffuser unit is installed at the air outlet of the air pipe. This multi-stage, multi-angle, rapid diffusion oxygen dissolving three-dimensional non-clogging microbubble aerator effectively cuts air into microbubbles, effectively solving the problems of clogging and short lifespan of traditional aerators after long-term use, and is suitable for aerobic aeration treatment.

The application provides a method for detecting biochemical oxygen demand in sewage, and belongs to the field of oxygen demand detection. The method comprises the following steps: forming a fluorine-containing organosilicon nano coating on the electrode surface of a dissolved oxygen sensor of a full-automatic BOD5 analyzer to obtain a fluorine-silicon modified dissolved oxygen sensor; pretreating the sewage to be detected in an adsorption column composed of modified activated carbon and porous silica gel to obtain a pretreated water sample; fixing bacillus subtilis on a porous carrier and then putting the carrier into the pretreated water sample to obtain an inoculated water sample; measuring the initial dissolved oxygen of the inoculated water sample and the end-point dissolved oxygen after 5-day culture; and obtaining the five-day biochemical oxygen demand in the sewage according to the initial dissolved oxygen and the end-point dissolved oxygen. Through the four-level collaborative system of "sensor anti-interference optimization, sample purification and enrichment, microbial reaction standardization and accurate signal acquisition", the application systematically eliminates the error sources in the traditional BOD5 detection, and realizes the accurate measurement of the organic matter pollution level in complex sewage.

This invention discloses an internal and external dual-circulation airlift aerobic fermentation device, relating to the field of microbial aerobic fermentation. The device includes a gas conveying system, a fermenter, a circulating pump, a circulating cooler, a liquid distributor, a liquid-gas jet emulsification device, a gas distributor, a guide tube, an internal coil heat exchanger, and a circulating liquid suction device. This invention utilizes multiple centrally symmetrical liquid-gas jet emulsification devices within the fermenter, employing high-speed liquid flow to strongly shear and collide with the gas phase, breaking the air into micron-sized fine bubbles, thus significantly increasing the gas-liquid contact surface area. Simultaneously, the use of rotating jets and a guide tube design ensures thorough mixing of the gas and liquid phases during the jetting process, forming an innovative internal and external dual-circulation mode. This invention combines the advantages of traditional mechanical stirring and airlift fermenters, significantly improving the production capacity and oxygen utilization rate of the fermentation device while substantially reducing energy consumption.

The invention provides an intelligent sensing control shock wave mass transfer aeration system, and relates to the technical field of sewage treatment. The water pump and the shock wave mass transfer aerator are both installed in sewage of the aeration tank, a liquid suction inlet part in the top of the shock wave mass transfer aerator is located below the water surface, the fan unit comprises a fan, a frequency converter and a wind speed measuring instrument, and the wind speed measuring instrument is used for measuring the wind speed and the wind quantity at an inlet of the fan; the control system collects real-time data of dissolved oxygen, pH and oxidation-reduction potential through a sensor, analyzes and processes the data, and plans a control path according to the relationship between the dissolved oxygen, pH and oxidation-reduction potential and the air volume. The device has the advantages that the oxygen mass transfer efficiency is high, stirring and mixing are uniform, and the aerator is not prone to being blocked and resistant to abrasion; the optimal air inflow can be adjusted and matched at any time through a control system, so that accurate quantitative aeration is realized, and the aeration energy consumption is reduced.

The invention discloses an industrial sewage and waste gas integrated treatment monitoring device, relates to the technical field of environmental protection equipment, and is particularly suitable for environmental protection engineering construction and ecological protection engineering construction. The device comprises a tank body, and the interior of the tank body is divided into a waste gas treatment cavity and a sewage treatment cavity through a flow guide partition plate with hydrophobic one-way breathable film holes. The waste gas treatment cavity is provided with an ultraviolet lamp and photocatalytic filler; a micro-nano aeration disc is laid at the bottom of the sewage treatment cavity. A gas sensor, a water quality detection structure and a cleaning structure are also arranged in the tank body. The water quality detection structure comprises a shield, a position adjusting assembly capable of driving a water quality sensor to ascend and descend and a water spraying pipe. According to the invention, gas-liquid separation and waste gas introduction are realized through membrane holes, the oxygen utilization rate is improved by utilizing micro-nano aeration, and a lifting sensor is arranged to be matched with spraying and scrubbing to realize automatic cleaning; the device is compact in structure, efficient in treatment and capable of being widely applied to the field of environmental protection and ecological protection engineering.

The application discloses a vortex high-efficiency energy-saving aeration tank, which comprises an aeration wall and a flow guide wall inside the aeration wall, an aeration tank gallery is formed between the aeration wall and the flow guide wall, and at least one of the aeration wall and the flow guide wall is provided with a wave-shaped flow guide structure located in the aeration tank gallery. The application has the beneficial effects that the air bubble movement path is changed from the traditional vertical upward movement to three-dimensional spiral movement, the residence time of air in seawater after desulfurization is greatly prolonged, the air-liquid contact area is increased, and the oxygen mass transfer efficiency and the CO2 stripping efficiency can be increased by more than 25% compared with the traditional aeration mode; the aeration branch pipes are arranged in the concave surface of the wave trough, the number is reduced by about 40% compared with the traditional full coverage arrangement, the pipe network structure and the aeration tank area are effectively simplified (more than 20% is saved compared with the traditional rectangular aeration tank), and the installation and maintenance costs are reduced.