A kind of treatment method of mineral processing wastewater containing sodium dodecylsulfonate

Abstract

The invention relates to a treatment method for beneficiation wastewater containing sodium dodecylsulfonate, which belongs to the fields of industrial wastewater treatment and non-metallic ore beneficiation. The processing method of mineral processing wastewater containing sodium dodecylsulfonate provided by the present invention is as follows: after the mineral processing tailings slurry containing sodium dodecylsulfonate enters the thickener, the cyclone is concentrated or the filter press is filtered, the overflow The flow part is treated by adding Fe without using conventional coagulation, oxidation, and adsorption agents 2+ Form a metal ion complex with sodium dodecylsulfonate in the water body, and at the same time, the overflow is introduced into the micro-bubble flotation column, and the foam containing the ion complex is generated by aerated flotation, and the foam part passes through the foam scraper Captured and reused in oxidized ore flotation operations, the removal rate of organic chemicals such as sodium dodecylsulfonate in the underflow part is above 85%, and the effluent water quality meets the requirements of the first-level discharge standard of GB25466‑2010 "Integrated Wastewater Discharge Standard". At the same time, the cost of beneficiation agent is reduced.

Description

technical field [0001] The invention relates to the fields of industrial water treatment and mineral processing, and specifically provides a treatment method for ore dressing wastewater containing sodium dodecylsulfonate. Background technique [0002] Sodium dodecylsulfonate (SDS), as a common anionic surfactant, is widely used in washing, chemical and other fields due to its advantages of stable properties, wide source of preparation raw materials, and low production cost. In addition, SDS can be adsorbed in the electric double layer on the surface of some easily floating oxide minerals through electrostatic force, and has good selectivity and foaming performance. In recent years, SDS has been used as a flotation collector in barite, potassium salt , fluorite, apatite and other oxide ore minerals are widely used in the field of flotation. [0003] Mineral processing plants that use sodium dodecylsulfonate as a flotation collector inevitably produce a large amount of minera...

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Problems solved by technology

[0004] At present, the main treatment methods for industrial wastewater containing sodium dodecylsulfonate are TiO 2 Photocatalytic oxidative degradation, Fenton reagent catalyzed oxidative degradation, ultrasonic degradation, traditional activated sludge degradation, biodegradation, flocculation, adsorption, coagulation sedimentation-air flotation and other processes, these processes are mostly used in For the treatment of chemical wastewater, this kind of process is directly used in the treatment of mineral processing wastewater containing sodium dodecyl sulfonate. There are problems such as high treatment cost, complicated operation procedures, and large floor space. Therefore, it is urgent to develop a method that is both It is an economical and environmentally friendly water treatment method that can effectively reduce the residual organic matter in such wastewater

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