The activated recirculation sludge method is a wastewater treatment process that uses a combination of biological and physical processes to remove contaminants from wastewater. This method is commonly used in municipal wastewater treatment plants.
The process involves introducing wastewater into a tank where microorganisms are present in the form of activated sludge. These microorganisms consume the organic matter and nutrients present in the wastewater, breaking them down into simpler compounds. The activated sludge is then separated from the treated water using settling tanks or other separation processes.
In the activated recirculation sludge method, a portion of the activated sludge is recirculated back into the wastewater tank. This helps to maintain a high concentration of microorganisms in the tank, ensuring efficient treatment of the wastewater. The recirculation process also helps to maintain a stable pH and temperature, which are important factors for the growth and activity of the microorganisms.
The treated wastewater is then disinfected and released into the environment. The activated sludge that is removed from the wastewater can be further treated and stabilized through processes such as digestion, composting, or drying, and can be used as a fertilizer or soil conditioner.
Overall, the activated recirculation sludge method is an effective and widely used wastewater treatment process that can remove a wide range of contaminants from wastewater, including organic matter, nutrients, and pathogens.