In the biochemical treatment of sewage, the jet aerator, which is mainly composed of liquid jet pump, is a great improvement compared with blast aeration and impeller aeration. However, with the development of petroleum, chemical industry, printing and dyeing Industrial sectors such as the rapid development and expansion of the corresponding increase in the proportion of industrial waste water, and supporting some of the shortcomings of sewage treatment equipment increasingly apparent: weak oxygen capacity, lower power efficiency, complex technology, one-time investment in higher. Jet pump In the jet aeration process, liquid jet pump plays an irreplaceable role, so its improvement and innovation can not be ignored on the one hand. In the jet aerator application, whether it is air supply or self-suction, it is mainly composed of four parts: nozzle, suction chamber, mixing chamber and diffusion tube. The mass transfer process is completed here. The efficiency High and low and these structures are closely related. For the requirements of the nozzle, the streamlined nozzle in the ideal state of the highest efficiency, but due to processing difficulties, as conical nozzles use a wide range; to prevent nozzle clogging, nozzle diameter should not be too small, for conical nozzles, generally about 25mm Is appropriate; as inhalation chamber, as a suction fluid generating device, the general use of cylindrical, the cross-sectional area of ​​the nozzle outlet area of ​​6 to 10 times, generally believed that the direction of inhalation of gas into the working water into the direction Between the angle of 40 ° a 60 ° is more appropriate, on the one hand, taking into account the gas on the one hand, a large number and relatively smooth inhalation, on the other hand taking into account the equipment processing convenience, cost savings; Mixing chamber is the main combination of liquid and gas Place, for self-priming generally have mixing chamber and the mixing chamber is longer, so that full mixing; diffusion tube for the mixture to the aeration tank discharge, the size of the pumping, inspiratory capacity and oxygen transfer, but also enhance the water Gas mixing and dissolved oxygen role, and can produce strong agitation. Diffusion tube size, length, depth of immersion and outlet position have an important effect on the oxygen effect. Although the liquid jet pump is the main device for jet aeration, it is also important for the aeration tank layout and process configuration. On the other hand, it relates to improving the oxygenation ability and the power efficiency of the jet. Aeration tank can choose rectangular layout and circular layout, jet and pool there is a most reasonable process layout. For the same type of exposure, the different pool options, different configuration methods, the results are different. Further Reading: pump valve pipe fittings Exhibition 2016 Exhibition of Information Industry, Internet (Xiamen) Technology Co., Ltd. Author: Asian pumps Network Editor: Yao Xiaoxia (QQ / micro letter: 2355962924) http://beng.liuti.cn/ (Hotline : 400-6030-811)
