A treatment system for removing anionic surfactants in domestic wastewater

Abstract

The invention discloses a treatment system for removing anionic surfactants in domestic wastewater. The treatment system comprises a water collection well, a coarse screen, a primary settling pond, a pH value regulating pond, an anion-Hall effect separating tank, an aerated nitration pond, a biological denitrogenation pond, a secondary settling pond, a water purification pond and the like. According to the system, the electromagnetism induction phenomenon called the Hall effect is utilized creatively, and when the current perpendicular to an external magnetic field is conducted in a wastewater trough, a current carrier will deflect, and an additional electric field will be generated in the direction perpendicular to the current and the magnetic field. A potential difference can be generated between the upper portion and the lower portion of the trough just by arranging an electromagnet and a discharge electrode at proper positions respectively to make a magnetic induction line and the current pass through the trough at a right angle in two horizontal directions respectively, and then anionic surface active substance ions in the wastewater move downwards to gather at the bottom of the trough and gradually form sludge, so that the anionic surfactants are removed out of the wastewater.

Description

technical field

[0001] The invention relates to a treatment system 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...

Examples

Embodiment Construction

[0020] like figure 1 The shown treatment system for removing anionic surfactants in domestic wastewater includes a water collection well 1, a coarse grid 2, a primary sedimentation tank 3, a pH value adjustment tank 4, anion-Hall effect separation tank 5, aeration and nitrification pond 6, biological denitrification pond 7, secondary sedimentation pond 8, water purification pond 9, etc.; among them, the domestic wastewater containing anionic surfactants enters the collection well 1 through the waste water pipeline, where centralized collection and preliminary stable adjustment are carried out. The outlet of the well 1 is connected to the coarse grid 2 through the wastewater pipeline, where large-diameter solid matter in the domestic wastewater is removed, and the outlet of the coarse grid 2 is connected to the primary sedimentation tank 3 through the wastewater pipeline, where the insoluble matter in the wastewater is further removed, The outlet of the primary sedimentation ta...

technical field

[0001] The invention relates to a treatment system 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...

Examples

Embodiment Construction

[0020] like figure 1 The shown treatment system for removing anionic surfactants in domestic wastewater includes a water collection well 1, a coarse grid 2, a primary sedimentation tank 3, a pH value adjustment tank 4, anion-Hall effect separation tank 5, aeration and nitrification pond 6, biological denitrification pond 7, secondary sedimentation pond 8, water purification pond 9, etc.; among them, the domestic wastewater containing anionic surfactants enters the collection well 1 through the waste water pipeline, where centralized collection and preliminary stable adjustment are carried out. The outlet of the well 1 is connected to the coarse grid 2 through the wastewater pipeline, where large-diameter solid matter in the domestic wastewater is removed, and the outlet of the coarse grid 2 is connected to the primary sedimentation tank 3 through the wastewater pipeline, where the insoluble matter in the wastewater is further removed, The outlet of the primary sedimentation ta...

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