These systems are developed to promote efficient water use and sustainable management of water resources. Wastewater recovery plays a significant role in water conservation and reducing environmental impacts in industrial, municipal, and commercial applications.
Wastewater recovery systems may include:
Pretreatment Equipment
Screening: Used to remove large solid particles, debris, and floating materials from wastewater, typically utilizing screens made of steel or plastic.
Equalization Tank: Balances the flow rate of wastewater and is used to equalize sudden load changes, contributing to homogenizing the water.
Physical Treatment Equipment
Sedimentation Tanks: Used to settle dissolved and suspended solid particles in water, with the accumulated particles removed from the bottom of the tank.
Dissolved Air Flotation (DAF) Units: Employing air bubbles to bring solid and oily substances in water to the surface for removal.
Chemical Treatment Equipment
Coagulation and Flocculation Units: Utilizing chemical coagulants and flocculation agents to precipitate and remove pollutants from water, aiding in the removal of color, odor, and organic pollutants.
Biological Treatment Equipment
Biological Reactors: Reactors where biological treatment processes occur, with microorganisms breaking down organic pollutants. Common types include Activated Sludge Reactors and biological filters.
Membrane Filtration Systems
Ultrafiltration (UF) and Nanofiltration (NF): Membrane systems preventing solid particles, microorganisms, and organic pollutants in water. Pore sizes range from 0.01 to 0.1 micrometers in ultrafiltration, and smaller in nanofiltration.
Disinfection Equipment
Ultraviolet (UV) Disinfection: UV lamps damage the DNA of microorganisms, rendering the water disinfected.
Chlorination: Chlorine is used to kill microorganisms and neutralize pathogens in water.
Recovery and Storage Equipment
Recovery Units: Direct purified water towards a reusable water source.
Storage Tanks: Purified water is stored in tanks for later use or distribution.
These pieces of equipment ensure the efficient operation of wastewater recovery systems, transforming cleaned water into a reusable resource. The selection and arrangement of treatment equipment may vary based on project needs, water quality requirements, and local environmental regulations.