What is the dissolved air floatation system in wastewater treatment plants? How does it work?
The majority of industrial wastewater is left untreated in India. As a result, the Indian government actively partners with wastewater treatment plant manufacturers to reduce the discharge of untreated waste material in the natural water stream. For example, the Gujarat government’s scheme for financial assistance to the Common Effluent Treatment Plant for the industrial park. Various techniques like screening, sedimentation, flow equalization, biological and chemical treatments, and dissolved air floatation are used to treat water. However, the dissolved air floatation technique is widely used in industries. The NCBI study says that the first DAF systems used in wastewater treatment were Adka and Sveen-Pederson models from the 1920s. The second generation was introduced in the 1960s, followed by the invention of floatation filters at the end of the 1960s. Finally, the development of the third generation was in the 1990s. In dissolved air floatation, a specific amount of air is ...