Ca wastewater grade 3 - Study guides, Class notes & Summaries

CA Wastewater Grade 3/ 63 Sample Questions/ . Terms like: An activated sludge plant with an MCRT of over 10-days is normally considered an extended aeration plant. - Answer: T Wasting of activated sludge on a continuous basis is the preferred method. - Answer: T SVI is used as an indicator for clarifier stability. - Answer: T

CA Wastewater Grade 3 sample questions and answers | Latest 2024/25

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 aerator oxygen transfer efficiency increases as submergence decreases and the oxygen transfer efficiency increases - Answer F When chlorine is used before disinfection for odor control it is not nec...

Fluffy white foam indicates low aerator solids concentration, while leathery brown foam indicates high solids concentration. - T When an anaerobic digester is becoming upset, the first sign will be increased alkalinity and decreased volatile acid concentration - F Surface aerator oxygen transfer efficiency increases as submergence decreases and the oxygen transfer efficiency increases - F When chlorine is used before disinfection for odor control it is not necessary to satisfy a chlorine ...

CA Wastewater Grade 3/ 63 Sample Questions/ . Terms like: When operating an aerobic digester be sure to keep the feed sludge volatile solid concentration high or else the percent reduction will decrease - Answer: F Any sample can be "fixed" for later testing. - Answer: F The nice thing about anaerobic process is the operator can smoke since no oxygen is present for a fire to start. - Answer: F

In order for a pond to be functioning correctly________ must be taking place. A. photosynthesis B. rapid temperature changes C. rapid pH changes D. rapid DO changes E. alkalinity changes - A

CA Wastewater Grade 3 sample questions Fluffy white foam indicates low aerator solids concentration, while leathery brown foam indicates high solids concentration. Ans- T When an anaerobic digester is becoming upset, the first sign will be increased alkalinity and decreased volatile acid concentration Ans- F Surface aerator oxygen transfer efficiency increases as submergence decreases and the oxygen transfer efficiency increases Ans- F When chlorine is used before disinfection for od...

CWEA Grade I Laboratory Analyst, questions and answers 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) -...

30 days is normally required for anaerobic digestion - T A 5 Hp pump is being used to pump 3 MGD of wastewater 8 feet. What is the pump efficiency? - 86% A 50 acre pond receives a flow of 4 MGD. How many inches of wastewater is added to the pond each week? - 20 inches A belt press is ran 8 hours each day and receives a flow of 145 GPM with a solids content of 15,000 mg/L. An anionic polymer is being added which allows for a 95% capture of the solids. The belt press cake weights 63.4 lbs/c...