A treatment method for removing anionic surfactants in domestic wastewater

Abstract

The invention discloses a treatment method for removing an anionic surfactant in domestic wastewater. The domestic wastewater containing the anionic surfactant sequentially passes through a water collecting well, a coarse screen, a first-time sedimentation basin, a pH value adjusting tank, an anion-Hall effect separating tank, an aerated nitrification tank, a biological denitrification tank, a secondary sedimentation basin and a water purification tank. According to the method, the electromagnetism induction phenomenon called as the Hall effect is creatively utilized, and when electric currents are transmitted in a wastewater tank in the mode of being perpendicular to an outer magnetic field, a current carrier deflects, and an additional electric field is generated in the direction perpendicular to the electric currents and the magnetic field; an electric potential difference is generated in the vertical direction of the water tank, therefore, anionic surface active material anions in the wastewater move downwards to be gathered at the bottom of the water tank to gradually form sludge, and then the anionic surfactant is removed from the wastewater.

Description

technical field [0001] The invention relates to a treatment method for removing anionic surfactants in domestic wastewater, which belongs to the field of wastewater treatment in environmental protection. Background technique [0002] Surfactant refers to a class of substances with certain properties, structure and interfacial adsorption performance, which can significantly reduce the surface tension of solvents or the interfacial tension of liquid-liquid and liquid-solid. Its English name surfactant is a compound word of surface active agent, which means "surfactant is a substance that can enhance surface (or interface) activity". That is, when the surfactant is dissolved in water, it can be divided into ionic surfactant and non-ionic surfactant according to whether it generates ions and its electrical properties. According to the dissociation properties of polar groups, surfactants include ionic surfactants, nonionic surfactants, and special surfactants. [0003] In recen...

AI Technical Summary

Problems solved by technology

Its treatment effect is good, but there are disadvantages such as complicated technology and unstable treatment effect.

[0007] Due to the shortcomings of the above-mentioned traditional treatment methods such as high cost, complicated technology, and unstable treatment effect, it is necessary to get rid of the existing treatment technology ideas, open up a new way to treat domestic wastewater anionic surfactants, and then develop a new form Anionic surfactant treatment technology for domestic wastewater

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