Applications of high-gravity technologies in industrial sewage purification: A review

The rapid and efficient purification of industrial sewage is essential for promoting industrial development and improving the environment. Traditional sewage treatment methods often encounter challenges, such as limited mass transfer capacity, which can result in prolonged purification times and incomplete treatment. High-gravity (HG) technology emerges as a promising solution for sewage purification, offering improved mass transfer performance along with significant space savings. This paper reviews the advancements in HG technology, concentrating on the principles of intensified mass transfer and its applications across various types of sewage purification. It assesses the advantages and disadvantages of employing HG technology for the treatment of sewage containing ammonium nitrogen, phenols, azo compounds, anthraquinones, nitrobenzenes, and antibiotics. Additionally, this paper discusses and summarizes integrated technologies such as HG impact flow, HG ion body, and HG electrocatalysis. Furthermore, this paper offers recommendations for future research aimed at promoting the wider application of HG technology in the treatment of diverse sewage types.