In the rapid development of the environmental protection industry, there is an increasing variety of microporous aeration devices, each with different advantages and disadvantages in terms of applications. In response to this, aeration manufacturers have made some summaries. The corundum aeration device is suitable for high-viscosity urban sewage and industrial wastewater, as it is not easily damaged after multiple cleanings and has a long lifespan. Of course, no product is perfect; the corundum aeration device has fast resistance loss, average oxygen utilization, and is prone to scaling. When in use, installation of cleaning and drainage devices is recommended.
Micro-porous aeration devices are also utilized by various heavily polluted enterprises, such as paper mills, among others. The wastewater produced by these companies has long-term polluting effects on water sources. These businesses are characterized by significant wastewater discharge volumes, high treatment difficulties, and severe hazards from pollutants. If this wastewater is discharged directly into nature without treatment, the consequences are unimaginable. However, aeration devices have been widely adopted in these enterprises, not only alleviating their woes of difficult wastewater treatment but also greatly easing their water resource supply issues. After purification and reprocessing, the wastewater is reused, achieving a circular use of water resources and solving the困扰 of water scarcity for these businesses.
In practice, in biological treatment ponds filled with media, the aeration power of microporous aeration devices often experiences significant changes. Equipment commonly using microbubble aeration methods primarily considers that when the bubble diameter is smaller, the oxygen transfer and utilization efficiency improve. However, this often leads to a problem where the bubbles generated during aeration are all microbubbles, lacking sufficient disturbance of the water body, which is不利于 the renewal of the biofilm on the media surface. Moreover, during the rise of microbubbles, collisions with the media often show a tendency to aggregate rather than break, thus reducing the oxygen utilization efficiency. Aeration devices using large and medium-sized bubbles often perform less efficiently in oxygen utilization during blank experiments. However, the bubbles produced by these devices, typically larger in diameter, often cause intense water body disturbance. Due to the smaller surface tension of the bubbles, they are continuously cut and broken during collisions with the branches of the media, resulting in a relative increase in oxygen utilization efficiency in structures rich in media.
Micro-porous aeration equipment, as a key piece of machinery in the oxidation ditch treatment process, significantly impacts the efficiency, energy consumption, and stability of the process. It not only performs functions such as aeration, propulsion, and mixing but also determines the land area and infrastructure investment required for the oxidation ditch. With increasing demands for aeration equipment in oxidation ditch treatment processes and the growing energy scarcity, the research and development of new, high-efficiency, low-energy aeration equipment have become crucial factors in driving the technological advancement and energy-saving efforts of oxidation ditch treatment. Years of research have led to a high level of technological maturity in aeration equipment, fully meeting the requirements of wastewater biological treatment processes and making significant progress in enhancing energy utilization efficiency. Domestic and international practices have proven that the development and application of new aeration equipment herald the birth of the next-generation oxidation ditch technology.
