raw sewage Articles
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EPA Provided Quality and Timely Information Regarding Wastewater after Hurricane Katrina
EPA provided quality and timely information regarding wastewater to States, wastewater treatment facilities, and the general public. The damage to the wastewater treatment facilities and their collection systems created a potentially critical health concern due to the possibility that people living in these communities would be exposed to raw sewage. Due to the risk of serious illness associated ...
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Evaluation of
Enterococcus -infecting phages as indices of fecal pollutionNo microbial source tracking tool satisfies all the characteristics of an ideal indicator of human fecal pollution. For this reason, the potential of Enterococcus faecalis phages (enterophages) as markers of this type of contamination was tested by using eight Enterococcus type strains as the possible hosts. The prevalence of enterophages in animal feces and domestic sewage were determined, as ...
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Large Energy Savings for Equalization (EQ) Basins - Case Study
AP Series Air-Powered Wastewater Mixers provide better mixing with less CFM. Topics: energy savings, eq basins, mixing Basin Overview: West Basin: 30,000 square feet. For raw sewage influent. East Basin: 20,000 square feet. For a mix of secondary effluent and raw sewage influent. Operating depths for both basins ~4 - 6 feet. Pre-Deployment Conditions: Both basins contained grids of coarse ...
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Singer valve prevents surges at sewage lift station - Case Study
Their Challenge When choosing the best spot for the Casa Loma lift station near Kelowna, B.C., the Regional District of Central Okanagan chose a scenic location next to Lake Okanagan. As the sole pump station in that area, it pumps raw sewage 210 feet (64 m) higher than the sanitary sewer trunk. But, with such high pressure and two large pumps, the pump station required extra protection in the ...
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Water issues linger for residents after Olympics close
Rio De Janeiro - Helicopters were up at daybreak spotting rubbish flows at the Olympic sailing venue, with boats below collecting the debris. Dozens of barricades dammed up streams that flushed garbage into the bay. They caught waterlogged sofas, Styrofoam cups and deflated soccer balls. A sewer pipe at Marina da Gloria stopped raw sewage from being pumped into the harbor where Olympic ...
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Studies of a microbial mixture with useful properties for the treatment of organic sewage
Background: The importance of bacteria in the treatment of raw sewage and water purification is well known. Here, we report on Sewper Rx, a unique mix of bacteria with powerful properties for treating sewage and other water cleaning applications, and we describe properties of the bacterial components of the treatment mixture which likely account for its enhanced organic solids digestion and odor ...
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Recovery of reusable water from sewage using aerated flat-sheet membranes
Continuous developments and advances in membrane technology allow recovering to large extent reusable water from untraditional water sources, such as municipal effluents. In this paper, operational results and preliminary cost-analysis of a microfiltration (MF) process used for raw sewage and secondary effluent polishing are given. The research was conducted with a 22 sandwich-type flat-sheet ...
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Seven35 Building, North Vancouver, Canada - Case Study
Developed by Adera Developments, the Seven35 Building, situated on the north shores of Vancouver, offers a variety of features designed to uphold a deep commitment to sustainability. This multi-award winning development consists of 60 urban-stacked town homes and was the site for the first installation of the SHARC sewage heat recovery system. The SHARC sewage heat recovery system recycles the ...
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Wilsonville WWTP Biosolids - Case Study
About the Project The new facility includes two new structures: a dewatering and drying building, and a head works building. There are five additional major structures, including a new aeration basin, stabilization basin, clarifier, a bio-tower and ultraviolet light channel structure. All of these are used in the various stages of treating raw sewage before it is discharged as clean water into ...
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Sensitivity analysis for the SimpleTreat model to simulate fate of chemicals in sewage treatment plants
SimpleTreat 3.1 predicts the distribution and elimination of chemicals by sewage treatment. The model is used as the default calculation in EUSES 2.0 to estimate exposure concentration in the receiving water, soil and air. A sensitivity analysis was performed to rank input parameters according to their influence on model predictions. Triclosan was selected for the base case. The sewage flow, ...
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Warden Biomedia chosen for Swallow Fields Business Park wastewater treatment upgrading project by Marsh Industries - Case Study
The Swallow Fields Business Park in Hailsham Sussex was developed in open countryside with no main sewage connections. The development is a mix of residential, business and retail accommodation. A major concern for BNP PARIBAS, the Consultant Engineer, and the Environment Agency was the effective treatment and disposal of the raw sewage from the site where there is such variable loading. Marsh ...
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Case Study: Sandy Balls Leisure Centre: Sewage Treatment Plant
A customer with a tough application for a Positive Displacement RAS (Return Activated Sludge) Pump was experiencing high maintenance with the existing submersible unit, requiring lifting of the pump every 3-4 weeks, usually due to solids blockage. NOT a pleasant task regularly lifting from raw sewage! Triangle replaced it with a self-priming Boerger Rotary Lobe Pump. A useful feature of the ...
By Triangle Ltd
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IntelliServe Alarming System Improves Monitoring and Data Efficiency
Indianapolis, IN - Like most American cities, Indianapolis had been facing increased scrutiny from residents about water quality issues. The U.S. EPA and state environmental agencies were calling for Indiana’s 105 cities with combined sewers to minimize or eliminate raw sewage overflows into local waterways. These overflows often occur after a quarter-inch or more of rain. In response, the ...
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The Langer Connection
The call came from a Kennedy township homeowner that the smell of raw sewage was in the air and they were tired of the smell. Dave Gasparovich went out and started walking the very hilly area (15% grade or more) in search of the culprit. What he found was incredible, incredibly bad. The 12 manholes he discovered in the woods had been installed in the late 70’s and were connected with clay pipe. ...
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Detection of assemblages A and B of Giardia duodenalis in water and sewage from São Paulo state, Brazil
Giardia duodenalis is a protozoan that parasitizes humans and other mammals and causes giardiasis. Although its isolates have been divided into seven assemblages, named A to G, only A and B have been detected in human faeces. Assemblage A isolates are commonly divided into two genotypes, AI and AII. Even though information about the presence of this protozoan in water and sewage is available in ...
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Feasibility study of Using GVRD sewers as heat sources and sinks
Executive Summary As pari of the Sustainable Region Initiative (SRI) the Greater Vancouver Regional District (GRVD) Policy and Planning Department has commissioned this study to investigate the use of district sewers as heat sources or heat sinks. This conceptual study examines the technology available for sewer heat transfer, and provides a mathematical and physical model of a heat transfer ...
By RABTHERM AG
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Culture-based indicators of fecal contamination and molecular microbial indicators rarely correlate with
Campylobacter spp. in recreational watersCampylobacter spp. are the leading cause of gastroenteritis worldwide. Most human infections result from contaminated food; however, infections are also caused by recreational waterway contamination. Campylobacter culture is technically challenging and enumeration by culture-based methods is onerous. Thus, we employed qPCR to quantify Campylobacter spp. in fresh- and marine-water samples, raw ...
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Molecular detection, quantification and characterization of human polyomavirus JC from waste water in Rio De Janeiro, Brazil
Polyomavirus JC (JCPyV) is largely excreted by the human population through the urinary route and has been recognized as a potential viral marker for human waste contamination. This study aims to investigate the dissemination of JCPyV in waste water from a sewage treatment plant (STP) located in Rio de Janeiro, Brazil, and to describe the prevalence of JCPyV subtypes currently present in this ...
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Dibba Al – HISN Sewage Treatment Plant – Sharjah case study
Introduction Corodex Industries was awarded a Sewage Treatment Plant (STP) project with the capacity of 10,000m3/d by Sharjah Municipality for Dibba Al-Hisn. The STP is built using the latest technology in sewage treatment known as Membrane Bioreactor (MBR). MBR treats sewage to a level that effluent can be discharged to marine life or can be used for restricted irrigation The STP supplied by ...
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Classification of contaminants and treatability evaluation of domestic wastewater
Long-term sampling and analysis were conducted in a domestic wastewater treatment plant for the investigation on the characteristics of the representative contaminants in raw sewage such as SS, COD, BOD5, TP, and TN. All these constituents were classified into dissolved and suspended groups by using a 0.45-μm membrane filter, and the concentration of each constituent in each group was ...
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