【Ten Years of Rapid Development in Chemical Processing Equipment】1692–2015: China’s First “Ultra-Fine Bubble” Air Flotation Unit

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Happy May Day 2024! Safety first. Let’s give praise and support to the achievements made in China’s chemical engineering technology and equipment. **********************【Ten Years of Great Development in Chemical Engineering Equipment】A continuously updated summary post is available; feel free to participate in the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html (Source: Haichuan Chemical Engineering Forum) ***************** On February 6, 2015, the “ultra-fine bubble” air flotation device developed by MCC Huatian Engineering Technology Co., Ltd., which is part of China MCC, was successfully tested on a pilot scale. This device boasts excellent water purification capabilities, with a daily wastewater treatment capacity of several hundred to tens of thousands of cubic meters, making it the first of its kind in China. 　　The core technology of air flotation systems lies in the device for generating \"ultra-fine bubbles\"; in most cases, air compressors are used for mixing air into the water. Examples include the DAF shallow-air flotation system used in Europe and the CAF turbine-based high-speed vortex air flotation system used in the United States. In these systems, the residence time of the bubbles is less than 4 minutes, and solid-liquid separation is achieved by adding large amounts of coagulant, which results in relatively high energy consumption. At present, most air flotation devices produced in China are imitations of foreign products. 　　The \"ultra-fine bubble\" air flotation device developed by MCC Huatian features dense and small bubbles that remain in solution for a long time, and it does not require an air compressor. A small amount of coagulant is sufficient to achieve good water purification results; it can be used even with highly viscous liquids and sludge. Additionally, it significantly reduces power consumption, thereby **drastically lowering energy use. At the same time, this device effectively addresses the key technical challenges associated with the remediation of surface water sources in rivers, resulting in a significant improvement in water quality; it can be widely applied in environmental protection projects such as the treatment of oily wastewater.