Wastewater is removed Study guides, Class notes & Summaries

(sample)? standard deviation in your calculator correct answersSx (Sx^2 is variance) relationship between exposure and distance correct answersE inversely proportional to 1/d^2 primary treatment stage of wastewater correct answersSedimentation stage, solids/sludge settle and are removed at the bottom while oils rise and are skimmed off. Secondary treatment of wastewater correct answersDegrades biological components, usually via aerobic biological processes. Fixed film and suspended gro...

True/False. Odor Control in wastewater collection systems and at wastewater treatment plants is very important. - Answer-True True/False. Each person has a different tolerance level for various odors. - Answer-True True/False. Odors are always removed by chlorine. - Answer-False. Not always True/False. Sampling is the only time operators should not handle liquid oxygen. - Answer-False. Sampling is the only time operators need to handle liquid oxygen. True/False. In the sludge reaerat...

Indirect Potable Reuse (IPR) - Answer-The blending of advanced treated, recycled or reclaimed water into a natural water source (environmental barrier) that could be used for drinking (potable) water after further treatment. Direct Potable Reuse (DPR) - Answer-Process of treating wastewater to drinkable standards and returning it to the raw water supply (distribution system) without the use of an environmental buffer. Rather than mixing the treated water into an aquifer or reservoir What h...

The Operator. What is another term for wastewater collection system? 1. Sewerage system. 2. Distribution system. 3. Pipes, pumps, and plants. 4. Sewers. What is meant by operation and maintenance of wastewater collection system? 1. Keeping the facilities in good operating condition. 2. Bypassing raw wastewater from the collection system. 3. Keeping the trucks operating. 4. Working with other utility agencies. What can happen when flows in excess of the sewer capacity occur?...

Texas Wastewater Class C Exam Prep (Latest 2023/ 2024 Update) Questions and Verified Answers| 100% Correct Q: What are major surface waters classified as for the purposes of water quality management and designation of site-specific standards?

Grade 2 Wastewater Treatment Operator Practice Exam Q&A 2024/2025 What is the methane content in a properly operating anaerobic digester? 65 to 70% by volume What will the addition of chlorine gas do to the pH of wastewater? decrease the pH What is the purpose of a Parshall Flume? Measure the flow rate What is the typical removal efficency of settleable solids in a primary clarifier? 95 to 99% Which of the follwing is true about pumoing scum from a primary clarifier? sc...

Waste Water Operator Level 1 Exam Prep 2024/2025 In the activated sludge process, some of the activated sludge must be wasted to... A. Prevent excessive solid buildup B. Prevent clogging of the sludge return line C. Prevent overloading of sludge return pumps D. Increase digester gas production A. Prevent excessive solid buildup The best operating strategy for feeding primary sludge to an anaerobic digester is to feed... A. Several time a day B. Large quantities once or twice a d...

Texas Wastewater Class A Exam Questions and Complete Solutions 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? - Answer: Summer A 30-inch diameter wastewater interceptor is observed to be flowing half-full at about two fps. The approximate volum...

wastewater grade 1 exam Treatment updated 20-24/2025 domestic wastewater Comes from schools, homes, hospitals, businesses, light industrial facilities. population equivalents 100 lbs wastewater per day, .2 lbs TSS/day, .17 BOD/day industrial wastewater Comes from industries. Compatible wastes can be processed by the plant. Incompatible wastes are toxic to the plant. sanitary wastewater The combined domestic and industrial waste waters from community. storm water Water t...

TX Class C Wastewater Treatment License Question and Answers 100% Pass 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 ...