Small Diameter Gravity and Pressure Sewers
In communities with low population density or physical features that make conventional gravity sewers inordinately expensive, alternative sewer technologies can be significantly lower...
Lessons to be Learned from Lafayette Tennessee's Small Diameter Sewer System
Lafayette, Tennessee's septic tank effluent, small diameter gravity sewer (SDGS) system is believed to have been the first such project to be funded by the United States Environmental...
Vacuum Sewers: Fundamentals and Design Methods
Vacuum sewer (VS) systems have important advantages over conventional gravity sanitary sewers or septic tank-soil absorption systems when one or more of the following conditions hold:...
Vacuum Sewers: Construction and Operating Experience
As an alternative to conventional collection, the vacuum system has many advantages. Smaller diameter pipes, shallower trenches and the ability to make vertical and horizontal field changes...
Priority Integrated Pipe Evaluation
The selection of the most suitable pipe for a given site involves the consideration of many factors affecting pipe performance. The factors to consider in sewer pipe evaluation and selection...
Retrospective Look Into Design Challenges of Boston Interceptors
The purpose of this paper is to share with designers and owners a retrospective evaluation of a major sewer system design effort. The process by which a major sewer design project reaches...
Successful Rehabilitation of Sewers at Hawaii Kai
Two common problems in sanitary sewer deterioration are hydrogen sulfide attack to concrete pipe and structures and infiltration leakage into the system. Within the 100 miles (160 km)...
Comprehensive Rehabilitation Results From Stege Sanitary District
Seven sewer agencies, including Stege Sanitary District, in the East Bay of the San Francisco Bay Area embarked on a 20-year capital improvement program in 1987. The 300 million construction...
Use of In-Place Lateral Reconstruction for Correction of Infiltration/Inflow
Extensive sewer collection system rehabilitation programs have done much and will continue to correct infiltration/inflow problems. However, re-evaluation of some of the earlier projects...
Getting to the Root of Sewer Problems
The ability to quantify and qualify work schedule in a clear, logical and precise manner can make the difference between an effective preventive maintenance program and one of 'trying'...
The Applicability of U.K. Sewerage Rehabilitation Techniques to the U.S.
The total length of public sewers in the UK is 160, 000 miles and in recent years there has been increasing concern over their conditions. Research spearheaded by the Water Research Centre...
Rehabilitation of the Seekonk River Interceptor Sewer, Providence, Rhode Island
The Seekonk River Interceptor, located in Providence, Rhode Island and owned by the Narragansett Bay Commission, is a combined sewer system originally built in the late 1800s. Portions...
Use of Data Base Management Systems for Sewer Line Rehabilitation
The use of data base management systems for managing the repair, rehabilitation, and replacement of sewer lines is a high priority for most cities and municipalities. Developing a data...
Sliplining with Ductile Iron Pipe
The utilization of Ductile Iron Pipe (DIP) as an alternative to be considered for sliplining rehabilitation of sewer pipelines is evaluated. A recent experience in sliplining a failing...
Pipeline Infrastructure
These proceedings include papers which cover the topics of innovative pipeline design, condition monitoring, soil-pipe interaction, inspection, maintenance, and rehabilitation. These collective...
Swirl Concentrators Revisited. The American Experience and New German Technology
The Swirl Concentrator is a small, compact, 'no moving parts' solids separation device. Its function is to act as as a static combined sewer overflow (CSO) regulation...
Manhole Junction Flow
When a sewer surcharges, a basement floods, or sewage overflows, the likeliest source of the problem is sewer junction manholes. Poorly designed ones act as bottlenecks. Study of a few,...
Domestic Sewage Disposal Pribilof Islands Small Diameter Ocean Outfalls
This paper presents aspects of planning, permitting, design, and construction of two unique small diameter ocean outfalls for the Native Alaskan Villages of Saint George and Saint Paul,...
A Benthic Environmental Evaluation Protocol for a New Municipal Marine Outfall
Concurrent with siting studies to relocate a 72 mgd secondary outfall diffuser in deep water (200 meters), the Municipality of Metropolitan Seattle initiated a three year baseline study...
Toxicant Reduction in the Dunny Way CSO
Combined sewer overflows (CSO) are a source of pollution to receiving waters and need to be controlled. As an interim approach to improving environmental conditions at this site in Seattle,...
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