A treatment method for removing detergent in domestic wastewater

Abstract

The invention discloses a processing method for removing detergent in household wastewater. Detergent containing household wastewater sequentially flows through a pretreatment unit, a primary filter tank, a primary precipitation tank, a pH value adjusting tank, an ion-Hall effect separating tank, an aeration nitration tank, a biological denitrogenation tank, a secondary precipitation tank, and a clear water reservoir. The processing method creatively utilizes an electromagnetic induction phenomenon named as Hall effect; when current is transmitted in a wastewater tank in a direction that is perpendicular to an outer magnetic field, carriers deflect, and an additional electric field is generated in the direction that is perpendicular to the current and the magnetic field. An electromagnet and a discharge electrode are placed on proper positions respectively so that the magnetic induction line direction and the current direction extend along two horizontal directions, form a right angle,and go through a water tank, potential difference is generated in the vertical direction of the water tank, thus detergent ions in wastewater move downwards and are enriched in the bottom of the water tank, sludge is gradually formed, and finally detergent is removed from the wastewater.

Description

technical field

[0001] The invention relates to a treatment method for removing detergent in waste water, which belongs to the field of waste water treatment in environmental protection. Background technique

[0002] The main component of detergent is surfactant. 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 molecular structure contains two parts of organic compounds, hydrophilic group and lipophilic group. When surfactants are dissolved in water, they are classified into ionic surfactants and nonionic surfactants according to whether they generate ions and their electrical properties. According to the dissociation properties of polar groups, surfactants include ionic surfactants, nonionic surfactants, and special surfactants.

[0003] In recent years, my country's chemical s...

Examples

Embodiment Construction

[0020] Such as figure 1In the shown treatment method for removing detergent in domestic wastewater, the domestic wastewater containing detergent enters the pretreatment unit 1 through the wastewater pipeline, where centralized collection and preliminary stabilization adjustment are performed, and the outlet of the pretreatment unit 1 is connected to the primary filter through the wastewater pipeline Pool 2, where the large-diameter solid matter in the domestic wastewater is removed, the outlet of the primary filter tank 2 is connected to the primary sedimentation tank 3 through the wastewater pipeline, where insoluble substances in the wastewater are further removed, and the outlet of the primary sedimentation tank 3 is connected through the wastewater pipeline pH value adjustment tank 4, where the wastewater is neutralized and the pH value is precisely adjusted. The pH value of the effluent from the pH value adjustment tank 4 ranges from 6.0 to 7.0 to meet the pH value of the ...

technical field

[0001] The invention relates to a treatment method for removing detergent in waste water, which belongs to the field of waste water treatment in environmental protection. Background technique

[0002] The main component of detergent is surfactant. 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 molecular structure contains two parts of organic compounds, hydrophilic group and lipophilic group. When surfactants are dissolved in water, they are classified into ionic surfactants and nonionic surfactants according to whether they generate ions and their electrical properties. According to the dissociation properties of polar groups, surfactants include ionic surfactants, nonionic surfactants, and special surfactants.

[0003] In recent years, my country's chemical s...

Examples

Embodiment Construction

[0020] Such as figure 1In the shown treatment method for removing detergent in domestic wastewater, the domestic wastewater containing detergent enters the pretreatment unit 1 through the wastewater pipeline, where centralized collection and preliminary stabilization adjustment are performed, and the outlet of the pretreatment unit 1 is connected to the primary filter through the wastewater pipeline Pool 2, where the large-diameter solid matter in the domestic wastewater is removed, the outlet of the primary filter tank 2 is connected to the primary sedimentation tank 3 through the wastewater pipeline, where insoluble substances in the wastewater are further removed, and the outlet of the primary sedimentation tank 3 is connected through the wastewater pipeline pH value adjustment tank 4, where the wastewater is neutralized and the pH value is precisely adjusted. The pH value of the effluent from the pH value adjustment tank 4 ranges from 6.0 to 7.0 to meet the pH value of the ...

Images