Wastewater laboratory - Study guides, Class notes & Summaries

Dispersal Zone: correct answers Dispersal Zone: dimensional volume of insitu soil that receives wastewater for treatment or distributes final effluent for disposal Horizontal reference point correct answers Horizontal reference point: Stationary identifiable point to which horizontal dimensions can be related POWTS dispersal component: correct answers POWTS dispersal component: device or method that is intended to promote the assimilation of treated wastewater by the environment TSS's:...

CWEA Grade I Laboratory Analyst Exam Questions and Answers Rated A+ Latest Update Chloride -️️ - Major anion found in many natural waters - Can impart salty taste in H2O What increases concentration of chloride in wastewater -️️ Chloride in human diet and softeners flushed into sanitary sewer system 2 most prevalent methods of measuring chloride -️️ argentometric and mercuric nitrate Argentometric -️️ Titration of sample with standard solution of silver nitrate (AgNO3) - Indi...

Class C Wastewater Exam Questions and Answers 2024/2025 (Graded A+) 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. - ANSWER-C. Is an Aerobic biological process A complete mix activated sludge plant has a fast settling sludge and high amounts of pin floc leaving the clarifier. One way to correct this problem is to : ...

CWEA Environmental Compliance Questions & Answers An industry operating an 8-hour shift, 5 days per week, generates 100,000 gallons of wastewater per shift. Their pretreatment system has a capacity of 150 gallons per minute. How long must the pretreatment facility operate to process the wastewater generated each day? - ANS-11.1 hours An industry has five sewer connections with the following discharge rates: 1) 300 gpd, 2) 75 gpd, 3) 725 gpd, 4) 1,200 gpd, 5) 200 gpd A flow-weighted compo...

CWEA Environmental Compliance Exam Review questions and answers, verified. An industry operating an 8-hour shift, 5 days per week, generates 100,000 gallons of wastewater per shift. Their pretreatment system has a capacity of 150 gallons per minute. How long must the pretreatment facility operate to process the wastewater generated each day? - -11.1 hours An industry has five sewer connections with the following discharge rates: 1) 300 gpd, 2) 75 gpd, 3) 725 gpd, 4) 1,200 gpd, 5) 200 g...

Class C Wastewater Exam Questions and Answers Latest 2024/2025 (Graded A+) A complete mix activated sludge plant has a fast settling sludge and high amounts of pin floc leaving the clarifier. One way to correct this problem is to : A. Increase the RAS Flow B. Reduce Wasting Rates C. Increase dissolved oxygen levels. D. Increase the F/M ratio by wasting more E. Increase the sludge age by wasting less. - ANSWER-D. Increase the F/M Ratio by Wasting More Which of the following flow rates sho...

CWEA LAB ANALYST COMPLETE SET Questions and Correct Solutions 2024 An amperometric titration is often used when measuring - Answer -Residual chlorine The most important reason for chlorinating effluent is - Answer -Disinfection Chlorination serves primarily to destroy or deactivate disease-producing microorganisms When wastewater samples are chlorinated and the pH is lowered - Answer -HCLO is formed Hypochlorous acid Which of the following constituents is the best disinfecting agent? - An...

CWEA Grade I Laboratory Analyst Exam 2023 Chloride - Major anion found in many natural waters - Can impart salty taste in H2O What increases concentration of chloride in wastewater Chloride in human diet and softeners flushed into sanitary sewer system 2 most prevalent methods of measuring chloride argentometric and mercuric nitrate Argentometric Titration of sample with standard solution of silver nitrate (AgNO3) - Indicator: Chromate ions (CrO4) - End point: reddish silver chromat...

As an operator, you are responsible to your employer for maintaining an economical and efficient operating facility. correct answers True An operator has an obligation to the great numbers of people who rely on downstream water supplies and are totally dependent on the operators competence and trustworthiness for their welfare. correct answers True Today, the natural purification processes and rivers all the waste loads and keep rivers clean. correct answers False Operators are water qu...

REHS/RS Exam Questions With 100% Correct Answers Latest Updated 2024/2025 | Graded | Verified. What is the most common cause for bacterial meningitis in children under five years of age? - Correct Answer-Haemophilus influenza type B How is giardiasis usually transmitted to others? - Correct Answer-person-to-person transfer of cysts from the feces of the infected individual Which of the following duties of state and local health agencies is intended to ensure that the public's health and we...