Wastewater treatment plant design and operation modifications to improve management of biosolids : regrowth, odors, and sudden increase in indicator organisms / by Matthew J. Higgins, Sudhir N. Murthy.

Format:

Book

Author/Creator:

Higgins, Matthew J., author.

Murthy, Sudhir N., author.

Series:

WERF Research Report Series

Language:

English

Subjects (All):

Sewage.

Sewage disposal plants.

Sewage sludge.

Physical Description:

1 online resource (150 pages) : illustrations, graphs

Edition:

1st ed.

Place of Publication:

Alexandria, Virginia : WERF, 2015.

Summary:

Available as eBook only The overall goal of this project was develop approaches to manage the issues of regrowth, odors, and sudden increase (ROSI) of indicator and pathogenic bacteria in biosolids. The project entailed two phases.

Contents:

Cover

Copyright

Acknowledgements

Abstract and Benefits

Table of Contents

List of Tables

List of Figures

List of Acronyms and Definitions

Executive Summary

Chapter 1.0: Introduction

1.1 Project Overview

1.2 Sudden Increase

1.2.1 History of Sudden Increase Research

1.2.2 Why Are FC Bacteria Not Culturable After Thermal Treatment?

1.3 Odors

1.4 Regrowth of Fecal Coliform and E. coli.

1.5 Research Objectives

1.5.1 Track I: Supporting Research (Monitoring, Methods, and Mechanisms) for Odors, SI, and Regrowth

1.5.2 Track II: Effect of Processes on Odors, SI, and Regrowth

1.6 Research Management

Chapter 2.0: Research Approach and Methods

2.1 Research Overview

2.1.1 Supporting Research - SI and Odors

2.1.1.1 Comparison of Methods for Enumerating Fecal Coliform and E. coli

2.1.1.2 Evaluation of Odors and Odorants Other Than TVOSC

2.1.2 Effect of Processes on SI, Regrowth, and Odors

2.1.2.1 Evaluation of Time-Temperature Curves for Inactivation of FC/E. coli

2.1.2.2 Evaluation of Impact of Different Processes on SI, Regrowth, and Odors

2.2 Research Approach

2.3 Experimental Methods

2.3.1 Alternative Culturing Methods for Enumeration of E. coli and Fecal Coliforms

2.3.2 Time-Temperature Experiments

2.3.3 Odor Evaluations

2.3.4 Odor Compound Monitoring - Virginia Tech

2.3.5 Odor Compound Monitoring - Bucknell

2.4 Quality Assurance/Quality Control

2.4.1 Overview

2.4.2 Data Validation and Evaluation

Chapter 3.0: Results and Discussion: Insights Into Sudden Increase

3.1 Overview of Experiments

3.2 Evaluation for Contamination to Explain SI

3.3 Alternative Culturing Methods

3.3.1 GAD Method, Media Additives, Low Temperature Storage

3.3.1.1 Microplate and Tube Comparison Using MUG and GAD Confirmation of E. coli.

3.3.1.2 Membrane Filtration Methods With Resuscitation Steps

3.3.1.3 Methionine Addition

3.3.1.4 Pyruvate Addition

3.3.1.5 Low-Temperature Storage

3.4 Evaluation of Other Standard Methods for FC/E. coli Enumeration

3.5 Evaluation of Method 1680 Formulation Using Pure Cultures of E. coli

3.6 Additional Time-Temperature Experiments

3.6.1 Inter-Laboratory Comparison of Time-Temperature Experiments

3.7 Evaluation of Time-Temperature Requirements

3.8 Summary and Conclusions

Chapter 4.0: Results and Discussion: Long-Term/Persistent Odors

4.1 Evaluations of Odors

4.1.1 Long-Term - Persistent Odors

4.1.1.1 What Is Their Pattern of Production With Regard to Time of Appearance and Decline?

4.1.1.2 Indole and Skatole

4.1.2 Correlation Between Short-Term and Persistent Odor Compounds

4.1.3 How Do Various Pre- or Post- Anaerobic Digestion Methods Impact Persistent Odorants?

4.2 Odor Compound Generation Potential of Primary and Secondary Sludge

4.2.1 VOSC from Primary Sludge, WAS and Mixed Primary and WAS

4.2.2 Butyric Acid and P-Cresol in Primary Sludge, WAS and Mix

4.2.3 Indole and Skatole in Primary Sludge, WAS and Mixed Primary, and WAS

4.2.4 Effect of SRT on Odorants

4.3 Summary and Conclusions

Chapter 5.0: Results and Discussion: Effect of Different Processes on ROSI

5.1 Effect of Processes on Sudden Increase

5.1.1 Effect of Processes on SI Overview

5.1.2 Defining the SI Threshold Using qPCR

5.1.3 Processes Without Full-Scale Centrifuge Dewatering

5.1.4 Full-Scale Processes With Centrifuge Dewatering

5.1.5 Proposed Best Practices Curve to Supplement EPA Time-Temperature Curves

5.1.6 Field Trial Using Proposed Best Practices Curve

5.2 Effect of Digestion and Dewatering Processes on Odorant Production.

5.3 Field Trial: Effect of Long-Term Storage on Regrowth and Odors

5.3.1 Project Overview

5.3.2 Odor Panel Results

5.3.3 Fecal Coliform Results

5.4 Addition of Amendments to Control Regrowth and Odors

5.4.1 Addition of Products to the Cake

5.4.2 Ferrate Addition During Dewatering

5.5 Effect of Microwave Treatment on Regrowth and Odors - Field Trial

5.6 Effect of Electro-Dewatering on Regrowth and Odors - Field Trial

5.7 Summary and Conclusions

5.7.1 Sudden Increase

5.7.2 Odors and Regrowth

Chapter 6.0: Communication

6.1 Communication Plan

Chapter 7.0: Summary, Conclusions, and Recommendations

7.1 Summary of Work

7.1.1 Sudden Increase

7.1.2 Odors and Regrowth

7.2 Significance and Implications to Practitioners

7.3 Recommendations

References.

Notes:

Includes bibliographical references.

Description based on online resource; title from PDF title page (ebrary, viewed November 15, 2016).

Description based on publisher supplied metadata and other sources.

OCLC:

962449223