Manual Of Water Well Maintenance And Rehabilitation Technology

Throughout the world, boreholes and tubewells operate inefficiently or have been abandoned. Diagnosis of the problems requires hydrogeological and operational information, which is often not available because appropriate monitoring has not taken place. Guidelines on cost effective monitoring and maintenance need to be established; information on successful rehabilitation techniques is needed. This book forms the proceedings of a conference organised to exchange practical experience and scientific knowledge on these aspects of water wells.

Effective management of a water well requires that the water well can meet a set of performance indicators. These can include criteria related to water quality, yield, economics and asset life. Water well deterioration due to fouling and corrosion impacts the ability of a well system to meet these criteria. Managing well deterioration processes involves understanding the nature of these processes and having in place water well maintenance strategies to deal with them. Managing water well deterioration fills a need within the literature for an academically based informative text that incorporates practical advice. The focus on a problem-oriented approach to diagnosing well deterioration makes the book a useful practical handbook. It integrates concepts from hydrogeology, hydrochemistry and microbiology to give a thorough understanding of water well deterioration processes. Scenarios have been developed to illustrate common causes of water well fouling. A feature of the book is the treatment of both corrossion and fouling issues in depth. Case studies selected from around the world are uses to illustrate approaches to the diagnosis and remediation of well deterioration. These scientifically orientated perspectives on water well deterioration are embedded within a management framework to provide a comprehensive approach to dealing with water well deterioration.

Capitalize on the First All-in-One Guide to Monitoring, Identifying, and Solving Problems of Ageing Water Wells Water Well Rehabilitation and Reconstruction offers water resource professionals the first comprehensive guide to the mechanical, chemical, and microbiological ageing processes of water wells. Filled with examples from Germany, the Netherlands, the United States, the United Kingdom, and Australia, this landmark reference provides the scientific background needed to understand well aging_and perform effective rehabilitation, reconstruction, and monitoring. You will find guidance on state-of-the-art testing and maintenance methods, as well as information on legal and environmental issues, such as the transport, application, and disposal of chemicals. Using SI and U.S. customary units throughout, with a handy conversion table included, Water Well Rehabilitation and Reconstruction enables you to: Identify and quantify problems affecting well performance Select rehabilitation methods appropriate for specific problems Harness methods for replacement or closure of a well if rehabilitation fails Inside This Landmark Water Well Resource • Introduction • Elements of Well Hydraulics and Well Operation • Chemical Ageing Process • Mechanical Causes of Well Ageing • Identification of Ageing Processes and Performance Assessment of Wells and Well Rehabilitations • Economics of Well Rehabilitation and Reconstruction • Mechanical Rehabilitation Techniques • Chemical Rehabilitation Techniques • Repair, Reconstruction, and Decommissioning of Wells • Practical Well Rehabilitation • Prevention • The Ten Dos and Don'ts of Water Well Rehabilitation • Appendices