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An extensive literature review on existing sewer sediment flushing technologies was conducted. The innovative vacuum flush system recently developed by the U.S. EPA was tested under laboratory conditions. The tests revealed a strong correlation between the strength of the flushing wave and the speed of the vacuum break. The original design did not succeed in providing a fast enough vacuum break despite being tested in different configurations. To improve the vacuum brake time, Rutgers developed two alternative mechanisms. These alternative designs showed promising results in the laboratory but remain to be tested under field conditions.
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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...
Mass Transfer Characteristics of Floating Media in MBBR and IFAS Fixed-Film Systems
The goals of this project were to establish a standard protocol for measuring mass transfer rates in biofilm media, and to use the resulting data to develop and calibrate an empirical model. Two...
Co-Digestion of Organic Waste Products with Wastewater Solids (Interim Report)
This project furthers the understanding of co-digestion of organic waste with wastewater solids, quantifies the benefits of co-digestion, and provides answers to key questions to help overcome...
Utility Benchmarking for Wastewater Synthesis Report
A robust performance evaluation process greatly enhances wastewater utilitys ability to achieve and measure improvement in performance in many key areas. A major contribution from this study is...
An Economic Framework for Evaluating the Benefits and Costs of Biosolids Management Options
Agencies responsible for wastewater treatment have choices regarding how they manage their treatment process residuals. They can consider them waste products requiring suitable disposal (e.g.,...
Pharmaceuticals in the Environment
About 4000 medical compounds are being used in the drugs applied today. It is estimated that worldwide consumption of active compounds amounts to some 100 000 tons or more per year. Consequently,...
Use of Enhanced Biological Phosphorus Removal for Treating Nutrient-Deficient Wastewater
Anaerobic/aerobic (AnA) and completely aerobic (CA) laboratory-scale sequencing batch reactors operating on an acetate- and casamino acids-based synthetic wastewater were used to...
Performance Indicators for Water Supply Services: Third Edition
The IWA Performance Indicator System for water services is now recognized as a worldwide reference. Since it first appearance in 2000, the system has been widely quoted, adapted and used in a...