Waste Water Compiled Exam Package Deal

What is the typical BOD removal efficiency in a primary clarifier? A) 10 to 15% B) 40 to 60% C) 20 to 50% D) 95 to 99% - C) 20 to 50% (v.1 pg 129) What does the "F" in F/M ratio represent? A) The microorganism population in the aeration tank B) The amount of filamentous bacteria in the acti...

Odors occur when treatment becomes - Anaerobic What should an operator do before entering a manhole - Test for all hazardous gases and oxygen levels and ventilate the manhole before entering What treatment devices is commonly used to separate and remove large solids from raw wastewater - a mecha...

WasteWater Sources & Characteristics: What is the most common reason for a wastewater to contain intermittent large amounts of sand, gravel, and grit? - storm events WasteWater Sources & Characteristics: Combined wastewater is defined as - sanitary wastewater and stormwater runoff WasteWater So...

General Wastewater Treatment: What is the pressure head caused by? - Water elevation General Wastewater Treatment: What color should the piping be that contains reclaimed water? - purple General Wastewater Treatment: What is the term for the height to which a column of water will rise in a well...

The primary purpose of the Water Utility Industry - The production and delivery of safe drinking water to consumers Those who work in the public water industry have a responsibility to meet standards created by these types of government entities. - Federal and State basic federal and state stand...

According to the Safe Drinking Water Act the basic definition of a public water supply system is any water system that supplies water for human consumption that serves: - 15 service connection or over 25 persons for over 60 days a year What federal law regulates public water supplies? - Safe Drin...

b) Kilopascals - What units are used to measure water pressure? a) Kilowatts b) Kilopascals c) Horsepower d) Head units a) Exhaust fan - Which of the following is NOT an example of PPE (Personal Protective Equipment)? a) Exhaust fan b) SCBA c) Face shield d) Traffic vest d) Be the operator...

When Chlorine is combined with water what type of pipe should be used? A. Ductile iron B. Asbestos concrete C. PVC D. Carbon Steel - C. PVC A good settling sludge would consist of what type of protozoa? A. Rotifers and nematodes B. Amoebas and Flagellates C. Stalked ciliates and mastagoria ...

The Activated Sludge Process: A. requires preaeration B. requires Activated Carbon C. is an aerobic biological process. D. Usually precedes primary sedimentation. E. Requires 50% by volume old sludge to work effectively. - C. Is an Aerobic biological process A complete mix activated sludge pla...

eeding of BOD samples is necessary when samples - (All of the above) have a chlorine residual, have a previously been chlorinated, have been subjected to high temperatures, contain high or low pH industrial wastes When is blue-green algae the most dominant on a pond treatment system? - Summer A ...