Secondary sludge constitutes which of the following?

What is the thickened concentration of air activated sludge?

What is the thickened concentration of chemical tertiary sludge( High lime)?

Which of the following is not a product of anaerobic digestion?

What is the percentage of thickness that can be achieved for secondary sludge?

What is the duration of sludge in tanks for mesophilic anaerobic digestion?

What is the temperature to be maintained for thermophilic digestion?

The pathogens in digestate are _____