WASTEWATER - By Rick Lallish
Chlorine contact time varies from state to state. Most states require either 15 or 30 minutes at the design...
Editorial
Exam Study Guide
Study Guide Articles
Online Exclusives
Exam Study Guide: Trickling Filter Conditions; and Pumping Conditions
Entry 244511Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time,...
Online Exclusives
Exam Study Guide: Nutrient Removal Bacteria; and Chemical Feed Pumps
Entry 244535Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time,...
Editorial
Exam Study Guide
WASTEWATER
By Rick Lallish
What process control measure has the most influence on sludge quality and determines the sludge age in an activated...
Online Exclusives
Exam Study Guide: Grit Removal Systems; and Water Pump Impellers
Entry 244544Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time,...
Editorial
Exam Study Guide
WASTEWATER
By: Rick Lallish
It is generally accepted that the sludge blanket depth in secondary clarifiers should not exceed 2 feet (0.6 meters)....
Online Exclusives
Exam Study Guide: Disinfection Contact Time; and Effluent Coloration
Entry 244593Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time,...
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Exam Study Guide: Sludge Quality; and Manganese Greensand Filters
Entry 244616Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time,...
Editorial
Exam Study Guide
WASTEWATER By Rick Lallish
How much influent organic matter is expected to be removed in primary treatment using a primary clarifier?
A. 10 to 20...
Online Exclusives
Exam Study Guide: Screen Usage; and Different Forms of Iron
Entry 244673Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time,...
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Exam Study Guide: Indicator Organisms; and Iron Contamination
Entry 244694Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time,...
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Exam Study Guide: Types of Bacteria; and Chemical Sequences
Entry 244902Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time,...
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Exam Study Guide: Sludge Blanket Depth; and Aluminum Sulfate as a Coagulant
Entry 244939Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time,...
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Exam Study Guide: Solids Retention Time; and Oxidizing Agents
Entry 244958Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time,...
