Please provide the answer to these questions very very urgently!!!
Dear Student
Ans 1. Microbes are employed in the secondary stage of sewage treatment. After the primary treatment sewage is mixed with air and aerobic bacteria grow into it. It produces flocs which settles in the settling tank in the next stage and forms activated sludge. This activated sludge is then put for anaerobic digestion where microbes act on it anaerobically. During this process gases like methane, hydrogen sulphide, carbon dioxide are produced which act as fuels. Since, microorganisms play an important role in this stage (Microorganisms are living beings, hence called biological), the secondary waste water treatment is called biological treatment.
P.S. For the rest of the questions, kindly post them in a separate thread.
Regards
Ans 1. Microbes are employed in the secondary stage of sewage treatment. After the primary treatment sewage is mixed with air and aerobic bacteria grow into it. It produces flocs which settles in the settling tank in the next stage and forms activated sludge. This activated sludge is then put for anaerobic digestion where microbes act on it anaerobically. During this process gases like methane, hydrogen sulphide, carbon dioxide are produced which act as fuels. Since, microorganisms play an important role in this stage (Microorganisms are living beings, hence called biological), the secondary waste water treatment is called biological treatment.
P.S. For the rest of the questions, kindly post them in a separate thread.
Regards