The electric potential between two points is measured in

A TDS sample can be held for how long if properly preserved?

___ are very small, transparent, fluffy, buoyant sludge particles that may rise to the top of the clarifier surface near the effluent weirs and often discharge over the weir?

Calculate the cost of removal per 1,000 pounds of TSS given the following data: Operating cost/year: $77,350, Average flow: 5.3 MGD, TSS removal: 210 ppm. (Assume 100% removal.)

Calculate the population equivalent given the following data: BOD concentration in ww – 2,222 mg/l, Average ww flow/24 hours – 3.11 cuft/sec, BOD/person – 0.23 lb/day.

All batteries have __ current.

What current flows in one direction only and is free from pulsation?

Calculate the solids loading rate of a rectangular dissolved air flotation unit in pounds per hour per square foot if the unit is 20′ long and 15′ wide. The unit receives 60 gpm of sludge with a solids content of 0.77% from the clarifier.

Which of the following is not biologically active in a lagoon?

Which flow measuring device may give inaccurate flow readings due to organic solids settling out before the device?