Protocols to Assess the Breakdown of Flushable Consumer Products ( WERF Research Report Series )

Publication series ：WERF Research Report Series

Author： Drew C. McAvoy  

Publisher： IWA Publishing‎

Publication year： 2003

E-ISBN: 9781780403250

Subject： X703 Wastewater treatment and reuse

Keyword： 工业技术

Language： ENG

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Protocols to Assess the Breakdown of Flushable Consumer Products

Description

A scientifically sound approach is needed to ensure that flushable consumer products are compatible with household plumbing fixtures, as well as wastewater collection and treatment systems.   In addition to assessing disposal system compatibility, an assessment approach should also ensure that flushable consumer products do not become an aesthetic nuisance in surface waters and soil environments.   This document presents an overall approach for assessing the fate and compatibility of consumer products in wastewater disposal systems.   While the focus of this document is on the United States, it is believed that the conceptual approach and many of the test methods could be used to assess the compatibility of flushable consumer products in wastewater disposal systems throughout the world.

Chapter

COVER

TITLE

ACKNOWLEDGMENTS

ABSTRACT AND BENEFITS

TABLE OF CONTENTS

LIST OF FIGURES

1.0 INTRODUCTION

1.1 Background

1.2 Peer Review Process

1.3 Terminology

2.0 FLUSHABILITY AND BIODEGRADABILITY

2.1 Disposal Pathways of Flushable Products

2.2 Flushability Versus Biodegradability

2.3 Assessment Approach and Methodologies

2.4 Quality Assurance

3.0 TIER 1A: RAPID SCREENING TESTS

3.1 Screening Toilet Bowl and Drainline Test

3.2 Column Settling Test

3.3 Aerobic Disintegration Shake Flask Test

3.4 Anaerobic Disintegration Test

3.5 Activated Sludge Disintegration Test (Proposed)

4.0 TIER 1B: MATERIAL PROPERTIES TESTS

4.1 Aerobic Biodegradation Test

4.2 Anaerobic Biodegradation Test

4.3 Physical Disintegration Test

4.4 Hydrolysis/Solubility Test

5.0 TIER 2: CONFIRMATORY TESTS

5.1 Confirmatory Toilet Bowl and Drainline Test

5.2 Tipping Pipe Disintegration Test (Proposed)

5.3 Porous Pot Disintegration Test

5.4 Laboratory Soil Disintegration Test (Proposed)

5.5 Sewage Ejector and Grinder Pump Test

6.0 TIER 3: FIELD VALIDATION TESTS

6.1 Home Use Toilet and Drainline Test

6.2 Onsite Treatment—Septic System Test

6.3 Onsite Treatment—Aerobic System Test

6.4 Sewer Conveyance/Municipal Treatment Test

6.5 Field Soil Disintegration Test

7.0 APPROACH OVERVIEW AND CASE STUDIES

7.1 Overview of Approach

7.2 Testing Strategy

7.3 Case Studies for Flushable Products

APPENDIX A :TEST METHODS

A.1 Screening Toilet Bowl Drainline Clearance Test

A.2 Column Settling Test

A.3 Aerobic Disintegration (Shake Flask) Test

A.4 Anaerobic Disintegration Test

A.5 Aerobic Biodegradation (Electrolytic Respirometry) Test

A.6 Anaerobic Biodegradation (Respirometry) Test

A.7 Physical Disintegration (Vortex) Test

A.8 Hydrolysis/Solubility Test

A.9 Confirmatory Toilet Bowl and Drainline Clearance Test

A.10 Tipping Pipe Disintegration Test (Proposed)

A.11 Porous Pot Disintegration Test

A.12 Soil Disintegration Test

A.13 Sewage Ejector And Grinder Pump Test

A.14 Home Use Toilet And Drainline Test

A.15 Onsite Treatment Compatibility Test

A.16 Onsite Treatment Degradation Test

A.17 Municipal Wastewater Collection and Treatment Test

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