Effluent Treatment Plants (ETPs) are used by giant industries to treat their wastewater. All of the leading pharmaceutical, chemical, textile, and other industries use ETPs for cleaning the water and removing any non-toxic or toxic materials or chemicals from it.
In detail process of ETP:
EQUALIZATION: The purpose of the equalization tank is to balance the raw wastewater from various treatment equipment.
pH CONTROL: The pH of effluent should be between 5.5 and 9.0, according to the Bureau of Indian Standards (BIS).
COAGULATION: Aluminium Sulphate is added to untreated water in order to help in the clotting process.
SEDIMENTATION: This process of water settling results in the heavier particles sinking to the bottom. The term “sludge” refers to the particles that collect at the bottom of a container.
FILTRATION: Filtration is the process of passing water through a filter to remove particles.
DISINFECTION: In this process, water is disinfected. Chlorine is used to clean and disinfect water.
SLUDGE DRYING: Sedimentation collects and settles down solids, which are then transported to drying beds where they are dried out.