Nutrient Removal Articles on Environmental XPRT

Nutrient removal for sewage treatment

Addition of a tertiary process provides one means of upgrading a sewage treatment plant's performance. Hans Wouters looks how this can be done using enhanced ...

Jan. 1, 2005

By Paques B.V.

Biological nutrient removal case study

The Challenge Chester Engineers was contracted by the Mountaintop Area Joint Sanitary Authority to design an upgrade to the existing treatment plant to address new Chesapeake Bay nutrient requirements and to eliminate the use of chlorine for ammonia nitrogen removal and disinfection to address trihalomethane permit violations. Chester was also required to complete the design to ...

Nov. 21, 2014

By Chester Engineers

WERF Nutrient Challenge investigates limits of nutrient removal technologies

The WERF Nutrient Challenge is a multi-year collaborative research initiative established in 2007 to develop and provide current information about wastewater treatment nutrients (specifically nitrogen and phosphorus in wastewater), their characteristics, and bioavailability in aquatic environments to help regulators make informed decisions. The Nutrient Challenge will also provide data on ...

Feb. 1, 2010

By IWA Publishing

Effluent management flexibility through nutrient removal

ABSTRACT The City of Carson City (City) Wastewater Reclamation Plant (WRP) is facing several effluent management challenges, which include increased effluent nitrogen concentrations, seepage from its reclaimed water storage reservoir, and increased influent flow due to growth. The City desires an economical solution that will allow it to continue its 100 percent reuse program as well as ...

Oct. 13, 2007

By Water Environment Federation (WEF)

Impact of plant assemblages on nutrient removal in constructed wetlands

Four different mesocosm scale constructed wetlands - monoculture (Carexstipata), self–designed (passive) community, mixed planted monoculture–passive community and a non–vegetated control - were compared to assess the effects of plant community composition on the removal of inorganic nutrients from agricultural runoff (synthetic tile water). The mixed and self–designed systems consistently ...

Apr. 8, 2013

By Inderscience Publishers

A Critical New Look at Nutrient Removal Processes

ABSTRACTThis paper questions the basic practice of using large unaerated zones and large mixed liquor recycle flows to achieve TN and TP removal. It shows that the use of chemicals and different process approaches may be simpler, cheaper and, maybe, even better. INTRODUCTIONMost people in our profession seem to believe the only way to design nutrient removal wastewater treatment plants (wwtp) is ...

Oct. 22, 2006

By Water Environment Federation (WEF)

Impact of multiple wastewater feedings on the efficiency of nutrient removal in an IFAS-MBSBBR: number of feedings vs. efficiency of nutrient removal

This article presents the results of research into the influence of one, two and three wastewater feedings in a cycle on efficiency and performance of combined biological nitrogen and phosphorus removal in an integrated fixed-film activated sludge and moving-bed sequencing batch biofilm reactor (IFAS-MBSBBR). The experiment lasted 158 days and was conducted in two laboratory models of the ...

Jul. 5, 2016

By IWA Publishing

Biological desulphurization of Landfill biogas - Case study

Summary Biorem's biogas desulphurization product is providing very high removal efficiencies at a landfill site in Quebec. Despite the highly variable concentrations and low winter temperatures, the system has achieved an average removal efficiency of 97%, and has maintained outlet nydrogen sulphide concentration below target consistently. As a result, the customer has realized a ...

Jul. 25, 2017

By Biorem Technologies Inc.

Nutrient Control Design Manual

The purpose of this EPA design manual is to provide updated, state‐of‐the‐technology design guidance on nitrogen and phosphorus control at municipal Wastewater Treatment Plants (WWTPs). Similar to previous EPA manuals, this manual contains extensive information on the principles of biological nutrient removal and chemical phosphorus removal to serve as the basis for design. A ...

Oct. 3, 2012

By IWA Publishing

Effects of nutrient loading on Anabaena flos-aquae biofilm: biofilm growth and nutrient removals

Effects of three different nutrient loadings (low nutrient loading, medium nutrient loading and high nutrient loading, denoted as LNS, MNS and HNS, respectively) on the structure and functions of algal biofilm using Anabaena flos-aquae were investigated using synthetic wastewater. Nutrients removal efficiencies, biofilm thickness, microalgae dehydrogenase activity (DHA) and exopolysaccharide ...

Apr. 30, 2016

By IWA Publishing

Vertical flow constructed wetlands: kinetics of nutrient and organic matter removal

The kinetics of organic matter and nutrient removal in a pilot vertical subsurface wetland with red ferralitic soil as substrate were evaluated. The wetland (20 m2) was planted with Cyperus alternifolius. The domestic wastewater that was treated in the wetland had undergone a primary treatment consisting of a septic moat and a buffer tank. From the sixth week of operation, the ...

Jul. 16, 2014

By IWA Publishing

Time Vs. Space: Two Successful Biological Nutrient Removal Strategies

Two distinct strategies have been practiced successfully for nutrient removals at a facility. One utilizes a continuous flow strategy with designated anaerobic, anoxic and aerobic zones. This strategy was targeted for biological nitrogen and phosphorus removal with minimal chemical addition. The other utilizes anaerobic, anoxic and aerobic cycle times in sequence at existing basins under a timer ...

Oct. 21, 2006

By Water Environment Federation (WEF)

Factors affecting population of filamentous bacteria in wastewater treatment plants with nutrients removal

Filamentous population in activated sludge and key operational parameters of full-scale municipal wastewater treatment plants (WWTPs) with bulking problems representative for Poland were investigated with quantitative fluorescence in situ hybridization. Statistical analyses revealed few relationships between operational parameters and biovolume of filamentous bacteria. Sludge age was not only ...

Oct. 27, 2015

By IWA Publishing

Effects of physical and morphometric factors on nutrient removal properties in agricultural ponds

Effects of physical and morphometric factors on nutrient removal properties were studied in small agricultural ponds with different depths, volumes, and residence times in western Japan. Average residence time was estimated to be >15 days, and it tended to decrease from summer to winter because of the increase in water withdrawal for agricultural activity. Water temperature was clearly ...

Aug. 24, 2015

By IWA Publishing

Low-pH Ammonia Oxidation at a Biological Nutrient Removal Facility

ABSTRACTMcAlpine Creek Wastewater Management Facility (MCWWMF), owned and operated by Charlotte Mecklenburg Utilities (CMU) of Charlotte, North Carolina, is permitted to treat 64 million gallons per day (mgd). Along with MCWWMF, three CMU treatment plants discharge effluent into the Catawba River just upstream of the South Carolina border. CMU worked with North and South Carolina regulators ...

Oct. 22, 2006

By Water Environment Federation (WEF)

Electrically enhanced MBR system for total nutrient removal in remote northern applications

Thousands of sparsely populated communities scatter in the remote areas of northern Canada. It is economically preferable to adopt the decentralized systems to treat the domestic wastewater because of the vast human inhabitant distribution and cold climatic conditions. Electro-technologies such as electrofiltration, elctrofloatation, electrocoagulation and electrokinetic separation have been ...

Jan. 1, 2012

By IWA Publishing

Nutrient removal in reverse osmosis concentrates using a biological aerated filter

The aim of this study is to employ a biological aerated filter (BAF) in the treatment of reverse osmosis (RO) concentrate received from reuse of treatment plant wastewater. Furthermore, the influence of chemical oxygen demand (COD)/N ratio on the nutrient removal was analyzed to find the detailed removal pathways of nutrients. The result was found to be high efficiency for biochemical oxygen ...

Apr. 8, 2015

By IWA Publishing

BIOLOGICAL NUTRIENTS REMOVAL APPLICATION OF SOFTWARE PACKAGES FOR PLANT DESIGN

Biological processes are the cheapest and most successful technique ...

Jul. 6, 1994

By WeDoTanks.com LLC

Using a continuous-fill, intermittent-discharge SBR to remove biological nutrients

Five years ago, the Town of Essex, in southwestern Ontario, decided to upgrade its facultative lagoon treatment systems with an alternative wastewater treatment plant — a continuous-fill, intermittent-discharge sequencing batch reactor (CFID-SBR) system, targeting even higher effluent quality. The CFID SBR process was designed by Premier Tech Aqua, which also provided major process ...

Jan. 1, 2011

By Premier Tech Aqua

Landfill leachate treatment for biological nutrient removal from wastewater

Substantial volumes of leachate have been generated at the recently opened lined cells of the Orange County Landfill located in central Florida. To accommodate these volumes, a force main was installed to deliver leachate to the Eastern Service Area Wastewater Treatment Facility (ESAWTF) operated by the Orange County Public Utilities Division, which uses a biological nutrient removal process. ...

Sep. 17, 2009

By Inderscience Publishers

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