WasteWater Operator Class C Exams Full Course Bundled Latest Package 2024!!!.

What test indicates the efficiency of a trickling filter? - Answer Percent BOD removal The temperature in an anaerobic digester should NOT change more than? - Answer 1°C per day What does a short circuiting in a WW pond cause? - Answer Decreases detention time What way does a bell sp...

Preliminary Treatment - Answer the 1st stage of sewage treatment where large debris, such as sticks, grit, and rags pas through a screen followed by a grit chamber, where the flow of water is slowed enough to allow for sedimentation. What stage of treatment is grit removal usually accomplished ...

Liftstations at a treatment plant or those which discharge directly to a treatment plant with an average flow greater than 0.1 MGD shall have three or more pumps or have automatically controlled variable capacity pumps, these pumps should be adjusted to actual flow conditions and controlled to opera...

Seeding of BOD samples is necessary when samples - Answer (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? - ...

What is the name of the State Agency responsible for enforcing the Safe Drinking Water Program in Texas? a. Texas Water Development Board b. Texas Department of Water Resources c. Texas Section of EPA d. Texas Water Resource and Conservation Commission e. Texas Commission on Environmental Quali...

An Imhoff cone is used to measure________solids. A. suspended B. colloidal C. volatile D. settleable - Answer D. settleable (Operation of Wastewater Treatment Plants, Volume 1 by Kenneth D. Kerri) A _____ flume is widely used for measuring wastewater flow. - Answer Parshall (Oper...

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: - Answer 15 service connection or over 25 persons for over 60 days a year What federal law regulates public water supplies? - ...

According to FDEP chapter 62-600.440 (4) (b) FAC, basic level disinfection is described as: - Answer A chlorine residual of 0.5 mg/L for 15 minutes at peak hourly flow FDEP chapter 62-604.550 (a) FAC, requires a wastewater spill shall be verbally reported to the state warning point no later tha...

T/F: In Texas, about 75% of all water is used for commercial, industrial, or agricultural purposes. - Answer True Water covers approximately ________ of Earth's surface. - Answer 71% Drought is an extended period when a region receives a deficiency in its ________ water supply. - Answer ...

Ammonia mixed with chlorine gas creates a - Answer white smoke The most difficult part of a water distribution operator's job. - Answer furnish a continuous supply Physical connection between a safe and potentially unsafe water source. - Answer cross connection A distribution system ...

SRT - Answer Solids Retention Time. Average time a given unit of cell mass stays in the activated sludge system. SRT is based on solids leaving the Activated Sludge process, and includes solids in the clarifiers. Also called MCRT. SRT Equation - Answer Aeration Total solids inventory/total so...

true - Answer Is chlorine heavier then air you contact the fire department in the event of this - Answer who do you call when you have a chlorine leak ammonia soaked rag or swab held near the suspected area - Answer what is best to use when looking for a chlorine leak milk - Answer ...

a disease that cannot be contracted by drinking contaminated water is - Answer malaria a non-permit confined space by OSHA standards means a confined space that - Answer does not contain or have the potential to contain any hazard capable of causing death when used in connection with the s...

THM are caused by - Answer Reaction of chlorinated water with humic materials found in surface water sources THMs in finished water can cause - Answer Cancer What is the MCL for Trihalomethanes - Answer 0.1 mg/L Nitrate in levels above ______ mg/L can cause blue baby disease - Answer ...

How many years of experience must an operator have to be a grade D Operator - Answer 12 months of operating and maintenance experience in a distribution system serving 1000 people or more Disinfection means - Answer inactivation of pathogenic organisms in the water potable water is - Answe...

Fluffy white foam indicates low aerator solids concentration, while leathery brown foam indicates high solids concentration. - Answer T When an anaerobic digester is becoming upset, the first sign will be increased alkalinity and decreased volatile acid concentration - Answer F Surface aer...

What is the predominant organism in a healthy activated sludge treatment plant? A. Stalked ciliates B. rotifers C. nematodes D. amoebas - Answer A. Stalked Ciliates A composite sample must be? A. sporadically collected in the treatment plant B. taken at one time C. analyzed immediate...

A flow of 60 gph is equal to? a. 1 mgd b. 1mg/L c. 10 gpm d. 1 gpm - Answer d. 1 gpm (60 gph / 60 min/hr ) The slope of a sewer is measured by a. The difference from the crown to the invert b. The difference in invert elevations over the length of the pipe c. Using the diame...

Performance problems in the activated sludge process can be caused by ____________. A. Poor solids dewatering B. Inadequate chlorination of effluent C. Consistent influent characteristics D. Insufficient operator training - Answer D. Insufficient operator training Solids that float to the s...