incoming wastewater , with BOD5 equal to about 200mg/l is treated in well-run secondery treatment plant remove 90 percent of the BOD. you are to run five-day BOD test with a stander 300-ml bottle , using mixture of treated sewage and dilution water(no seed) assume the intial DOis 9.2mg/l
A) roughly what is the maximum Volume of treated wastewater should you put in the bottle if you want to have at least 2.0mg/l of DO at the test (filling the rest of the bottle with the water
b) if you make mixture half water and half treated wastewater, what DO would you expect after five days?