Abc wastewater collection - Study guides, Class notes & Summaries

A flow of 60 gph (227 L/h) is equal to a) 1 mgd (3.785 x 10cubic m3/d) b) 1 mg/L (1mg/L) c) 10 gpm (0.63 L/s) d) 1 gpm (0.063 L/s) - Answer d) 1 gpm (0.063 L/s) The slope of a sewer is measured by a) The difference from the crown to the invert. b) The difference in invert elevations over a length of pipe. c) Using the diameter of the pipe. d) Only entering the manhole. - Answer b) The difference in invert elevations over a length of pipe. An air gap can be used to a...

Define reagent grade water Water with no detectable concentration of compound or element to be analyzed i.e it is below the method's detection level. What is osmosis? The net movement of water through a semipermeable membrane towards an area of higher solute concentration. What are the various ways reagent grade water is prepared? Distillation, reverse osmosis, ion exchange, carbon adsorption, filtration, ultrafiltration, ultraviolet oxidation. Standard Methods is a comp...

Which of the following techniques offers the least constructive information to someone being disciplined? Providing advice Focusing on behavior Providing alternatives Focusing on observations The correct answer is A. The purpose of disciplining is for a manager to provide constructive information to help the subordinate become aware of how his or her actions affect the organization's system. The goal is to provide maximum information with minimum threat. Providing advice is not constr...

Clint's ABC Wastewater Exam Questions First action for a polymer spill? Ans- Apply an absorbent to dispel such as sand or kitty litter and then sweep up the materials Total discharge head includes? Ans- Discharge pressure head + static discharge head + velocity head + friction head Where is the best location to collect a sample? Ans- A location that represents the entire waste stream or basin Preservation and holding times for BOD samples Ans- 48 hours at<=6 degrees centigrade Def...