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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.
Overview of State Energy Reduction Programs and Guidelines for the Wastewater Sector
Approximately 35% of a wastewater treatment facilities’ total cost to provide wastewater service is for energy use. Industry wide, about 0.6% of the electric energy produced in the United States...
Whole Effluent Toxicity Testing
Under the National Pollution Discharge Elimination System (NPDES), many municipal and industrial wastewater treatment facilities must perform Whole Effluent Toxicity (WET) Testing. Regulatory...
Flood Grouting for Infiltration Reduction on Private Side Sewers
Available as eBook only.
The sewers in Seattle’s Broadview neighborhood, built in the 1950s, experience significant inflow and infiltration. Intense wet weather...
Assessing the Impacts of Pulp Loading from Non-Dispersible Materials on Downstream Sewer Systems
This study subjected wipes from five different manufacturers to a variety of tests to determine if changes to their physical characteristics occur when introduced into a sewer system and what...
Influent Constituent Characteristics of the Modern Waste Stream from Single Sources: Literature Review
This report is available as a pay-per-view item only.
A literature review was conducted to assess the current status of knowledge on the composition of raw wastewater and primary...
Microbial Growth in Drinking Water Supplies
Maintaining the microbial quality in distribution systems and connected installations remains a challenge for the water supply companies all over the world, despite many years of...
Water-Wise Cities and Sustainable Water Systems: Concepts, Technologies, and Applications
Building water-wise cities is a pressing need nowadays in both developed and developing countries. This is mainly due to the limitation of the available water resources and aging infrastructure to...
Technology Assessments for Wastewater Treatment
This report includes a compilation of over a dozen wastewater treatment technology assessments for various sized facilities. It provides a review of literature on the specific subject; describes...