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In industries such as coking, petrochemicals, pharmaceuticals, and dyes, the phenol-containing wastewater produced is complex in composition, highly toxic, and poorly biodegradable, making it a persistent challenge in industrial wastewater treatment. An advanced technology—solvent extraction, known for its high efficiency,…

In various industrial sectors such as chemical manufacturing, pharmaceuticals, and hydrometallurgy, oxalic acid is widely used as an important raw material and cleaning agent. However, the resulting high-concentration oxalic acid wastewater has become a major challenge for enterprises pursuing sustainable…

In the production process of chemical enterprises engaged in stainless steel processing, acids are used for surface treatment, which generates a large amount of pickling leachate containing heavy metal elements such as chromium, nickel, and iron. If these metals can…

During the production processes in industries such as chemicals, pesticides, dyes, and pharmaceuticals, large amounts of wastewater containing nitrobenzene are inevitably generated. This type of wastewater is highly toxic, poorly biodegradable, and chemically stable, making it a hazardous waste under…

During pesticide production, the discharged wastewater often contains high concentrations of phthalic acid and other benzene derivatives. This type of wastewater is complex in composition, highly toxic, and poorly biodegradable. Traditional treatment methods are costly and struggle to achieve both…

In the production of organic acids such as citric acid and lactic acid, the traditional calcium salt method is lengthy, costly, and heavily polluting. As an advanced alternative, solvent extraction method offers significant advantages, but its efficiency depends directly on…