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This report brings together a body of information on the characteristics of the wastewater pipe network and the most common defects encountered. The technologies and methods in use by utilities to investigate these defects for the purposes of condition assessment are identified along with what are the perceived unmet needs.
A comprehensive review of the current state of the art of investigation technology is provided for both gravity and force mains. It also reviews data management and interrogation. A structured approach to investigation of gravity and pressure pipe is suggested.
Innovative investigation technologies and methods for gravity sewers are reviewed under five sections:
Based on the identified unmet needs of the industry seven technologies for gravity pipe investigations and two for force main investigation, are identified as demonstrating potential for application to the wastewater industry.
Using a structured approach, each of the chosen technologies are reported in detail with information on details of the technology, its performance including field requirements, role of the operator, and costs. Where possible field monitoring was undertaken this is reported.
Towards a Renewable Future: Assessing Resource Recovery as a Viable Treatment Alternative: State of the Science and Market Assessment
Implementation of extractive resource recovery technologies at water resource recovery facilities (WRRFs) has been limited to date (2015). This research sought to facilitate a more widespread...
Energy Efficiency in Wastewater Treatment in North America: A Compendium of Best Practices and Case Studies of Novel Approaches
After manpower, energy is the highest operating cost item for most the wastewater utilities. Over the last decade, the implementation of new technologies to meet new effluent limits and water...
Development of Protocols and Methods for Predicting the Remaining Economic Life of Wastewater Pipe Infrastructure Assets: Phase 1 (Development of Standard Data Structure to Support Wastewater Pipe Condition and Performance Prediction)
Accurate prediction of wastewater pipe structural and functional deterioration plays an essential role in the utility asset management process and capital investment planning. The key to...
Technology Roadmap for Sustainable Wastewater Treatment Plants in a Carbon-Constrained World
Resources end up in wastewater through inefficient consumption. As a result, wastewater contains reusable water, carbon (energy) and nutrients (nitrogen, phosphorus and sulfur) that could be...
Phosphorus Removal Potential Using Biogenic Iron Oxides
Biogenic iron oxides produced by circumneutral iron-oxidizing bacteria were evaluated for phosphate removal. Traditional batch equilibrium experiments were coupled with bench-scale flow through...
Heterotrophic Plate Counts and Drinking-water Safety
Heterotrophic Plate Counts and Drinking-water Safety provides a critical assessment of the role of the Heterotrophic Plate Count (HPC) measurement in drinking water quality management. It was...
Analysis of Existing Community-Sized Decentralized Wastewater Treatment Systems
This nationwide study has gathered data/information for and examined the performance of large-scale decentralized and small community wastewater systems and flows...
Institutional Issues for Integrated 'One Water' Management
The looming capital investment required to refurbish aging infrastructure, upsizing and upgrading existing infrastructure, as well as building new infrastructure to meet growing demands through...