Flocculants are widely used in sewage treatment to help separate and remove suspended particles, sludge, and colloids. The following are the general steps for flocculant wastewater treatment:
Mixing: Add an appropriate amount of flocculant to the wastewater to be treated, and generally mix it evenly through stirring or stirring machinery.
Formation of Flocculants: Flocculants react chemically with suspended solids or colloids in wastewater to form larger flocs. These flocculants can include dyes, oils, microorganisms, etc.
Residue of Escherichia coli: Use instruments such as photometers and colorimeters to test bacterial levels.
Sedimentation or flotation: By applying methods such as static sedimentation or air flotation (air flotation screen), the flocculent is separated from water, causing it to sink or float.
Separation and removal: The separated flocs are usually collected and removed by sedimentation tanks, sedimentation tanks, or filtration equipment. These flocs can be centrally treated or treated by mechanical means such as scrapers or centrifuges.
Clarified water treatment: After flocculation and sedimentation treatment, the clarified water can be further filtered, disinfected, or treated to meet discharge or reuse standards.
It should be noted that the specific flocculant wastewater treatment process depends on factors such as the characteristics of the wastewater, the type and scale of the treatment equipment, etc. Therefore, in practical applications, appropriate flocculants should be selected and used according to specific circumstances, and relevant operating guidelines and regulatory requirements should be followed. In addition, for large or complex sewage treatment systems, the design and supervision of professional engineers may be required.