Overview

A comprehensive guide to the causes and control of odors in wastewater plants, lagoons, and sewer systems, this book explains the chemical and microbiological conditions that lead to foul smells, potential health hazards for workers, and complaints from citizens. After reviewing the chemical compounds most implicated in water - and airborne odors, the authors show how specific bacteria generate these compounds in multiple, often anaerobic, treatment processes and how bacterial activity is tested both in the field and in the lab, which allows plant personnel to take steps to prevent odors before they become a problem. The authors show how variations in plant conditions such as diurnal flow, FOGs, and temperature can lead to unexpected odors, and they offer custom strategies for combatting odors in such situations. Special attention is given to ammonia, methane, and sulfide formation and the latter's effects, such as corrosion and respiratory risks. Evidence-based methods to control odors are described for plants and collection systems of all sizes. Technologies include approaches based on biology, such as bioaugmentation and ones based on chemistry, e.g., sulfide precipitation, as well as instructions for when and where to clean equipment and cover exposed odor sources. Some of the highlights of the book include: 1. Ready-to-use operational procedures to solve specific odor problems 2. Proven biological, chemical, and physical methods for preventing and controlling odors in plants, sewer systems, tanks, and lagoons 3. Shows how daily plant variables like flow, water temperature, sludges, fats and grease affect odor generation and dictate strategies to combat it 4. Explains the field and lab tests needed to detect odor-causing situations 5. Detailed investigation of the chemical and bacterial processes that cause odors from ammonia, sulfides, methane, and many other compounds.

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9781605950648

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