Ultraviolet Light in Water and Wastewater Sanitation (2002)

ISBN-13: 9781138104983 / Angielski / Twarda / 2017 / 188 str.

Willy J. Masschelein; Rip G. Rice

Opis

Ultraviolet Light in Water and Wastewater Sanitation is the first comprehensive exploration of this emerging technology for improving the quality of drinking water and wastewater. The text integrates the fundamental physics specifically applicable to sanitation with UV light, the engineering aspects, and practical experiences in the field. The author analyzes the concerns associated with these applications of UV light and brings together broad information on the UV technologies applicable to water and wastewater treatment. It is an essential and unique reference on a technology that is receiving growing regulatory acceptance.

Spis treści

Introduction
Historical: Use of UV Light in Drinking Water Treatment
Present State of Standards and Regulations
Definition of Ultraviolet Light: Range and Natural Sources
Solar Radiant Energy

Available Lamp (or Burner) Technologies
General
Mercury Emission Lamps
Currently Available Commercial Lamp Technologies
Available Lamp Technologies
Special Lamp Technologies
Preliminary Guidelines for Choice of Lamp Technology
UV Emission Yields and Mode of Control
Zonal Distribution of Emitted Light

Use of Ultraviolet Light for Disinfection of Drinking Water
Introduction
Germicidal Action
Dose-Efficiency Concept
Representative Test Organisms
Competitive Effects in Disinfection with UV-Light
Multihit, Multisite, and Step-by-Step Killing Concepts
Design Factors for Reactor Geometry
Mixing Conditions in UV-Water Treatment
Operational Control of Efficiency
Tentative Design Questionnaire for UV-Based Disinfection Units for Drinking Water
Examples

Use of UV in Photochemical Synergistic Oxidation Processes in Water Sanitation
Basic Principles
Combinations of Hydrogen Peroxide and UV-Light
Synergism of Ozone and UV in Water Sanitation
UV-Catalytic Processes
Tentative Design Rules for UV-Synergistic Oxidation Processes

Use of UV Light for Sanitation of Wastewater
Regulations and Guidelines for Disinfection of Treated Wastewater
General Characteristics of Effluents in Relation to Disinfection by UV-Light
Aftergrowth and Photorepair after Exposure to UV Disinfection of Wastewater
Applied UV Doses in Wastewater Disinfection
Choice of Lamp Technology in Wastewater Disinfection
Toxicity and Formation of By-Products
Preliminary Conclusions on Wastewater Disinfection with UV
Example

General Conclusions
Glossary
References
Index

O autorze

Willy J. Masschelein, Rip G. Rice