Ph of wastewater - Study guides, Class notes & Summaries

TCEQ D Wastewater Exam Questions and Answers Minimum velocity at average flow in a sanitary sewer should be about ____ft/sec? - Answer-2ft/sec What types of pumps are used? - Answer-Centrifugal Lime controls what? - Answer-pH Good house keeping is important for the operators _______ - Answer-Safety F/M ratio formula represented by: - Answer-Volatile, suspended solids, aeration tank (VSSAT) A chlorine leak is detected by_______ - Answer-Vapor 10% ammonia Main purpose of BOD ...

CWEA Grade I Laboratory Analyst Questions and Answers Graded A 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 sil...

b) Kilopascals What units are used to measure water pressure? a) Kilowatts b) Kilopascals c) Horsepower d) Head units a) Exhaust fan Which of the following is NOT an example of PPE (Personal Protective Equipment)? a) Exhaust fan b) SCBA c) Face shield d) Traffic vest d) Be the operator with overall operational responsibility of the system Which of the following are operators-in-training NOT allowed to do? a) There are no restrictions on the duties of an operator-i...

Wastewater Treatment Operator Certification Test #1 Questions and Answers (Graded A)Wastewater Treatment Operator Certification Test #1 Questions and Answers (Graded A)Wastewater Treatment Operator Certification Test #1 Questions and Answers (Graded A)Wastewater Treatment Operator Certification Test #1 Questions and Answers (Graded A)Wastewater Treatment Operator Certification Test #1 Questions and Answers (Graded A) What is the methane content in a properly operation anaerobic digester? A...

Biochemical Oxygen Demand -ANSWERorganic strength measured by amount of oxygen consumed over time composite sample -ANSWERsample combined from multiple grab samples grab sample -ANSWER1 sample representative of current conditions Dissolved Oxygeb -ANSWERmeasure of the amount of oxygen dissolved in water (mg/l) effluent -ANSWERtreated water discharged from a treatment plant eutrophication -ANSWERexcissive growth of plant/algae in receiving waters due to dissolved nutrients and thei...

Texas Wastewater Class A Exam {2024} Questions with 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

water becomes denser as it becomes - colder chemical symbol for lead - Pb Elements that are isotopes contain different numbers of ______________ - neutrons table salt is - sodium chloride Water has a much higher boiling point than expected because of - hydrogen bonding Chemical bonds occur when atoms share___________ - electrons The number of electrons in an atom's outermost electron layer determine its ____________ - chemical properties The chief operator at a Grade 2 plan...

Texas Wastewater Class A | 200 Questions with 100% Correct Answers | Verified | Latest Update 2024 Seeding of BOD samples is necessary when samples (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? Summer A 30-inch diameter wastewater interceptor is observed to be flowing half-full at about two fps. The a...

What is the methane content in a properly operation anaerobic digester? A) 30 to 35% by volume B) 1 to 2% by volume C) 65 to 70% by volume D) 15 to 20% by volume (Ans- C) 65 to 70% by volume (v.2 pg 158) What will the addition of chlorine gas do to the pH of wastewater? A) Moderately increase pH B) pH will not be affected C) Significantly increase the pH D) Decrease the pH (Ans- D) Decrease the pH (v.1 pg 349-350) What is the purpose of a Parshall flume? A) measure turb...

Seeding of BOD samples is necessary when samples - (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? - Summer A 30-inch diameter wastewater interceptor is observed to be flowing half-full at about two fps. The approximate volume of wastewater flowing through the pipe is 3.14x1.25 x 1.25 x 2 = 4.9 cfs x 449 ...