Question

Residence time of waste in combustion zone is ________ seconds.

(a) 1

(b) 2

(c) 3

(d) 4

I got this question by my college professor while I was bunking the class.

I need to ask this question from Thermal Treatment in division Thermal Processes of Hazardous Waste Management

Answer 1

Right answer is (b) 2

Explanation: The residence time of waste in combustion zone is 2 seconds and minimum temperature of 850 degree Celsius.