| Description |
1 online resource (xvii, 105 pages) : illustrations (some color) |
| Contents |
Intro -- Title Page -- Copyright -- Contents -- List of Figures -- List of Tables -- Preface -- Chapter 1 Introduction -- 1.0 PURPOSE -- 1.1 Scope of the Document -- 1.2 Grit Testing Applications -- 1.3 Summary of Current Testing Methods -- 1.3.1 Cross-Channel Sampling and Dry Sieving -- 1.3.2 Full-Depth Sampling and Wet Sieving -- 1.3.3 Primary Sludge Sampling -- 1.4 Issues Associated with Lack of Performance Testing Standardization -- 2.0 GRIT CHARACTERISTICS -- 2.1 Fractionation of Solids in Wastewater -- 2.2 Historical Definitions -- 2.3 Definition for the Purpose of Sampling |
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2.4 Physical Characteristics of Grit -- 2.5 Influence of the Collection System on Grit Characteristics and Loading -- 2.6 Influence of Geology on Grit Characteristics -- 2.7 Grit Loading Patterns -- 2.8 Grit Distribution Versus Flow Characteristics in Channel -- 2.9 Roles of Interested Parties in Grit Characterization -- 2.9.1 Role of the Service Utility -- 2.9.2 Role of the Consulting Engineer -- 2.9.3 Role of the Grit Characterization Testing Company -- 2.9.4 Role of the Grit Removal Equipment Manufacturers -- 3.0 REFERENCES -- 4.0 SUGGESTED READING -- Chapter 2 Sampling Practices |
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1.0 Site Safety Considerations -- 1.1 General Safety Precautions for Wastewater Sampling -- 1.2 Site Access to a Sample Location -- 1.3 Engulfment and Fall Protection -- 1.4 Confined Space and Toxic Gases -- 2.0 Grit Sampling Point -- 2.1 General Recommendations for Grit Sampling Points -- 2.1.1 Grit Profile Versus Velocity Profile -- 2.1.2 Sampling from Channels, Pipes, and Structures -- 2.1.3 Influence of Recycled Flows -- 2.2 Influent and Effluent of Grit Removal Equipment -- 2.2.1 Grit Chambers -- 2.2.2 Grit Classifiers, Washers, and Hydrocyclones |
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2.3 Grit Well (Grit Hopper, Grit Pot, Underflow) -- 3.0 Field Pre-Tests -- 3.1 Mechanical Checks -- 3.1.1 Screens -- 3.1.2 Grit Washing and Dewatering Equipment -- 3.1.3 Grit Removal Equipment -- 3.2 Hydraulic Checks -- 3.2.1 Collection System Considerations -- 3.2.2 Velocity at Peak Diurnal Flowrate -- 3.2.3 Velocity at Minimum Daily Flowrate -- 4.0 Tested Flowrates -- 4.1 Average Daily Flowrate -- 4.2 Peak Flowrate -- 4.3 Maximum Possible Flowrate and Wet Weather -- 5.0 Grit Tested -- 5.1 Endemic Grit -- 5.2 Grit Seeding -- 5.2.1 Particle Size Distribution -- 5.2.2 Material |
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5.2.3 Concentration -- 6.0 Grit Sampling Methods and Equipment -- 6.1 Bucket Sampling -- 6.2 Single-Point Pumped Sampling -- 6.2.1 Single Height -- 6.2.2 Varying Height and Width Schedule -- 6.2.3 Equipment and Setup -- 6.2.3.1 Sample Probe -- 6.2.3.2 Pumps -- 6.2.4 Sample Collection Procedures -- 6.3 Multiple-Port Vertical Sampling -- 6.3.1 Sample Method Overview -- 6.3.2 Equipment and Setup -- 6.3.3 Sample Collection Procedures -- 6.4 Vertically Integrated Slotted Sampling -- 6.4.1 Sample Method Overview -- 6.4.2 Equipment and Setup -- 6.4.3 Sample Collection Procedures -- 6.4.4 Precautions |
| Summary |
Annotation Guidelines for Grit Sampling and Characterization addresses the "last frontier" in liquid systems treatment by documenting and examining the methods currently in use. Driven by the industry's increasing need to determine how grit can be better characterized, modeled, and reliably removed, this book is a first step toward understanding the implications of the methods selected and allowing for proper design and optimization of grit removal systems. The book discusses methods for:characterizing grit;obtaining a grit sample, includingcross-channel sampling and dry sieving, full-depth sampling and wet sieving, andprimary sludge sampling;analyzing a grit sample; andusing grit characterization data. The authors also identify gaps in the current knowledge and make the case for further research in critical areas |
| Notes |
"WEF Special Publication." |
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"Prepared by the Grit Sampling and Characterization Task Force of the Water Environment Federation."--Page iii |
| Bibliography |
Includes bibliographical references and index |
| Notes |
Print version record |
| Subject |
Sewage -- Sampling -- Guidebooks
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Sewage -- Purification -- Guidebooks
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Sewage disposal plants -- Guidebooks
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Sedimentation and deposition.
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Sedimentation and deposition
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Sewage disposal plants
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Sewage -- Purification
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Sewage -- Sampling
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| Genre/Form |
travel guidebooks.
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Guidebooks
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Guidebooks.
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Guides touristiques.
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| Form |
Electronic book
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| Author |
Water Environment Federation.
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| ISBN |
9781523105311 |
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1523105313 |
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