Guidelines for grit sampling and characterization.

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Detalles Bibliográficos
Clasificación:Libro Electrónico
Autor Corporativo: Water Environment Federation
Formato: Electrónico eBook
Idioma:Inglés
Publicado: Alexandria, VA : Water Environment Federation, ©2016.
Temas:
Sewage > Sampling > Guidebooks.
Sewage > Purification > Guidebooks.
Sewage disposal plants > Guidebooks.
Sedimentation and deposition.
Eaux usées > Échantillonnage > Guides.
Eaux usées > Épuration > Guides.
Eaux usées > Stations de traitement > Guides.
Sédimentation (Géologie)
Sewage disposal plants.
Sewage > Purification.
Sewage > Sampling.
Guidebook
travel guidebooks.
Guidebooks.
Guides touristiques.
Acceso en línea:Texto completo
Tabla de Contenidos:
  • 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
  • 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
  • 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
  • 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
  • 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

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