MGD Study guides, Class notes & Summaries

Turbidity in wastewater is caused by A. color B. dissolved calcium C. hardness D. finely divided suspended material - correct answer D. finely divided suspended material The gas most commonly associated with septic wastewater is A. carbon dioxide B. carbon monoxide C. hydrogen sulfide D. methane - correct answer C. hydrogen sulfide How many cubic meters per second in 10 MGD? A. 0.44 B. 1.44 C. 4.73 D. 24.62 - correct answer A. 0.44 Mechanical ventilation of a lift station is...

CWEA Electrical and Instrument Grade 2 Study Guide Questions And Answers What is PPE Category 1? - ANS-Arc-Rated clothing, Minimum Arc Rating of Arc 4 cal/cm2 arc-rated long sleeve shirt and pants or overall Parshall Flume Measurement point? 1.2 FT Water Height 20.8xH at measurement point - ANS-Possible answer:72,607 MGD Absoulte Pressure Gauge? What is True? - ANS-Possible answer: Read more accurate or 14.7 PSI higher Flow meter that uses electrodes is? - ANS-Magnetic Flow Meters What i...

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 diameter of the pipe d. Only entering the manhole - Answer b. The difference in invert elevation over the length of the pipe An air gap can be used to a. Clean sewer blockages caused by greas...

Preliminary Treatment - 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 in? - preliminary treatment Rotating Biological Contactor - a type of biological secondary treatment process How are protozoa (cause of amoebic dysentery) destroyed? - disinfection Other than stream d...

The Wastewater Treatment B Test Questions and Answers (Graded A) The Wastewater Treatment B Test Questions and Answers (Graded A) The Wastewater Treatment B Test Questions and Answers (Graded A) The Wastewater Treatment B Test Questions and Answers (Graded A) 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 pu...

Waste Water Operator class C exam 2024/2025 Review Questions and Answers correct verified When Chlorine is combined with water what type of pipe should be used? A. Ductile iron B. Asbestos concrete C. PVC D. Carbon Steel - CORRECT ANSWER-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 D. Free swimmers and stalk ciliates - CORRECT ANSWER-D. Free swimmers and stalk ciliates...

CWEA LAB ANALYST III CERTIFICATION TEST 2024/2025 WITH 80 REAL EXAM QUESTIONS AND CORRECT ANSWERS (100% CORRECT VERIFIED ANSWERS) CALIFORNIA WATER ENVIRONMENT ASSOCIATION - CWEA LAB ANALYST III CERTIFICATION GRADED A+ ( NEWEST!!) A waste is considered hazardous if it has at least one of the following properties: - ANSWER-ignitability, corrosivity, reactivity, and toxicity. The average flow in a treatment plant is 3.1 MGD. A chlorine residual of 4.0 mg/L is maintained and the effluent mu...

The Wastewater Operator Treatment 2 Final Exam 2024/2025 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 operate so as to: - CORRECT ANSWERMinimize surges in the treatment in the treatment units. In the contact stabilization system of activat...

WASTEWATER PRACTICE TESTA spray field has a total of 80 acres and is divided into four equal zones. Only one zone may be Operated at a time and the permit states that no more than 4 inches of water can be applied to the zone. How long can a zone be operated at a rate of 0.7 MGD before it must be rotated to another zone? - Answer-3.1 Days 4/12= 0.33 43560 x 0.33= 14.374.8 14.374.8 x 7.48= 107,523.5 107,523.5 x 20= 2,150,460 2,150,460/700,000= 3.1 Days Most activated sludge mixed liquor su...

The Wastewater Treatment B Test Questions And Answers All Verified 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 operate so as to: - ANS Minimize surges in the treatment in the treatment units. In the contact stabilization system of activa...