Alternating Direction Oxidation Ditches?A Cost Saving Technology from Denmark
A soon to be released EPA report claims that in Denmark, small alternating direction oxidation ditches (ADOD) save as much as 70% of the cost for conventional oxidation ditches. The alternating...
Take Back the Land
Municipal sludge applied to land devastated by strip mining has brought thousands of acres of Ohio, Illinois and Pennsylvania land back to life. After two years of testing at a Palmerton,...
Innovative Sewage Plant Means Growth for Town
Seattle Slude Wins EPA's Sewage Derby
Ground Water Recharge with Sewage Effluent
Recharge systems for soil-aquifer treatment (SAT) of conventionally treated sewage effluent typically remove essentially all suspended solids, biodegradable material (BOD) and microorganisms...
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,...
Tractive Flows Adjacent to Site for Submarine Sewage Pipeline
Twin 3200 m long submarine sewage pipelines for the city of Vancouver are being placed across the outer tidal flats and upper slope of the Fraser River delta to a water depth of 107 m....
Boston Harbor and Massachusetts Bay?Issues, Resources, and Management
The major pollutant discharges into Boston Harbor and Massachusetts Bay can be categorized as follows: municipal discharges, sewage sludge, combined sewage overflows (CSOs), individual...
Sewage Trapping by Water Parcels in Puget Sound
Sewage effluent entering Puget Sound, Washington, often becomes trapped in discrete parcels of water. The parcels are easily identifiable in vertical density profiles as layers of well-mixed...
Little Bubbles, Big Payoff
Fine poor diffusers often boost the energy-efficiency of aeration in sewage plants by 25-50%. This is important because the combined energy bill of all U.S. municipal sewage plants is...
Sewage Treatment in Tropical High Rate Ponds
Sewage Correction
Stochastic Stream Flow Analysis for Hydrograph Controlled Waste Release
A risk based procedure for the design of hydrograph controlled release sewage lagoons is derived. The procedure is based on a stochastic analysis of streamflow events above a given threshold...
Sewer-Septic Tank Hybrid Promises Savings
Until recently the only options for sewage were the septic tank/leach field or conventional sewers. In some cases a hybrid of the two, called the septic tank/effluent drain, is less costly...
Solution to a Waterhammer Problem: A Case Study
Waterhammer is caused by a rapid change in the flow velocity of liquid in a pressurized pipeline. Therefore, the potential for waterhammer exists in almost every pressurized liquid piping...
The Combined Conveyance/Sewage Treatment Concept
Overview of Operations and Maintenance Issues
Erratum for Athens Banishes Sewage to Island
Performance Study of the Lagoon at Inuvik, N.W.T.
Since 1957, Inuvik's sewage has been discharged into a lagoon situated northwest of the townsite. In 1982 the lagoon was upgraded to a two-stage system. Two primary cells...
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