Manganese Filtration (Water and Wastewater) Articles

Loch Ascog Water Treatment Works (WTW) - Case Study

Background Loch Ascog WTW, on the Isle of Bute in Western Scotland, treats water abstracted water from the loch. The main treatment at the works was slow sand filtration followed by disinfection. The quality of the treated water was not compliant with the National Requirements of The Water Supply (Water Quality) Regulations 2000 in relation to: Iron and manganese Turbidity and taste ...

Aug. 12, 2020

By Bluewater Bio

Decoding the AdEdge treatment matrix

U.S. drinking water utilities come up against a variety of water quality issues. From aesthetic issues to naturally occurring contaminants and contaminants resulting from industry processing, no water source is without problems. Contrarily, many of them have co-occurring contaminants, which complicates the treatment process. Although there is no single treatment solution that will successfully ...

Apr. 25, 2018

By Adedge Water Technologies, LLC

How NoMonia Works to Treat or Remove Your Ammonia - Case study

Most water utilities should have effective treatment methods for the filtration of arsenic, iron and manganese from drinking water sources. However, as ammonia becomes increasingly concentrated in groundwater throughout the U.S., many utilities around the country are searching for ways to successfully treat the contaminant, while also meeting U.S. Environmental Protection Agency (EPA) standards ...

Mar. 7, 2018

By Adedge Water Technologies, LLC

Manganese oxidation and bacterial diversity on different filter media coatings during the start-up of drinking water biofilters

Manganese removal is a typical concern in drinking water production. Biofiltration may be used when treating groundwater sources but the onset of manganese removal in virgin biofilters can vary considerably. The aim of this study was to investigate the effect of different filter media on manganese oxidation and bacterial diversity in biofilters during the start-up. The onset of manganese ...

Oct. 13, 2017

By IWA Publishing

World War II Memorial, DC Iron & Manganese Reduction - Case Study

In 2003, AdEdge Water Technologies began working closely with EarthTech , the assigned engineering firm responsible for specifying and selecting the various water treatment systems serving the new National World War II Monument in Washington, DC. Stormwater and groundwater control and treatment are essential aspects of this project given the location of the site on the Mall adjacent to the ...

Apr. 6, 2017

By Adedge Water Technologies, LLC

From urban municipalities to polar bioremediation: the characterisation and contribution of biogenic minerals for water treatment

Minerals of biological origin have shown significant potential for the separation of contaminants from water worldwide. This study details the contribution of biologically derived minerals to water treatment operations, with a focus on filtration media from urban municipalities and remote cold regions. The results support biofilm-embedded iron and manganese to be the building blocks of ...

Feb. 10, 2017

By IWA Publishing

Case study - Hong Kong

To meet the forecasted increases in demand for potable water, the new Tai Po Water Treatment Works has been built in Hong Kong. The plant has a production capacity of 1200 Ml/day This solution strongly reduced the chlorine demand for the plant compared to the alternative execution with break point chlorina The water treatment works takes water from the river Dongjiang in the Guangdong Province ...

Jan. 20, 2017

By Filtralite - Leca Norge ASFiltralite

Interactions between ammonia, iron and manganese removal using pilot-scale biofilters

Pilot-scale biofilters treated with real groundwater were established to systemically investigate the interactions between ammonia, iron and manganese removal. When both of ammonia and manganese in influent were about 1 mg/L, they were quickly removed; but when manganese was above 3 mg/L, ammonia removal was affected significantly. When total iron was above 5 mg/L, the oxidization rate of ...

Jan. 3, 2017

By IWA Publishing

Identification of the bacterial population in manganese removal filters

The aim of this study was to identify bacteria present in ripened manganese removal filters for drinking water production. The bacterial population was identified with ‘next generation’ DNA sequencing, and specific bacteria were quantified with quantitative polymerase chain reaction (qPCR) and characterized by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry ...

Nov. 15, 2016

By IWA Publishing

Limited effectiveness of household sand filters for removal of arsenic from well water in North Vietnam

Since well water utilized for domestic purposes in the Red River Delta of North Vietnam has been reported to be polluted by arsenic, barium, iron, and manganese, household sand filters consisting of various components are used. Information regarding the effectiveness of various sand filters for removal of the four toxic elements in well water is limited. In this study, arsenic levels in 13/20 ...

Oct. 4, 2016

By IWA Publishing

Coating techniques for glass beads as filter media for removal of manganese from water

Dry as well as wet coating techniques were developed to coat glass beads as filter media to remove manganese from water. For dry coating, powdered manganese oxide ore was fixed on the media surface. Wet coating was achieved by depositing synthetic manganese oxides onto the bead surface. The media were characterized by electron microscopy as well as by testing the removal of Mn2+ in a ...

Jul. 7, 2016

By IWA Publishing

The role of backwash in start-up of full-scale drinking water biofilters

The purpose of backwashing during the start-up period of rapid biofilters at drinking water treatment plants differs significantly from the purpose of backwashing during normal operation. During start-up, finished water quality is secondary, detachment of microorganisms must be minimized, dust present in the original filter media must be removed and inherent inoculation of the biofilter with ...

Jan. 29, 2016

By IWA Publishing

EC Requests Scientific Opinion on Three Coatings for Titanium Dioxide (Nano) as UV-Filter in Dermally Applied Cosmetic Products

On December 17, 2015, the Scientific Committee on Consumer Safety (SCCS) posted a request for a scientific opinion on three coatings for titanium dioxide (nano) as an ultraviolet (UV)-filter in dermally applied cosmetic products. According to the request, the European Commission (EC) received data from industry to assess the safety of the following coatings for titanium dioxide (nano form) used ...

Dec. 29, 2015

By Bergeson & Campbell, P.C.

Removal of iron and manganese from aqueous solutions using carbon nanotube filters

Carbon nanotubes (CNTs) have become the focus of attention of many scientists and companies worldwide. CNT-based filters have a prospective advantage in comparison to the commercial filters already in operation because they are light weight and do not require electricity to operate. This investigation handles the filtration efficiency of manganese and iron from aqueous solution using ...

Sep. 24, 2015

By IWA Publishing

Effect of oxygen deprivation on treatment processes in a full-scale drinking water biofilter

Dissolved oxygen is critical for proper operation of waterworks that utilize anaerobic groundwater and rely on biofilters to remove iron, manganese and ammonium. In these biofilters, planned or inadvertent oxygen deprivation may occur for a variety of reasons. The water quality effects of oxygen deprivation on the function of drinking water biofilters, however, have not previously been ...

Jul. 24, 2015

By IWA Publishing

Data normalization identifies performance issues - Case Study

Introduction The Municipal RO Plant had been in operation for almost 18 years, producing ~290 gpm of permeate water for a city in Iowa, USA. It was one of the first RO plants in the state and the upper mid-west. In May 2008, city operators complained about a loss in system production. In response, the City contracted an RO membrane service provider to perform a cleaning regimen that produced less ...

Jun. 1, 2015

By Avista Technologies, Inc.

The study on chemical adsorption of dissolved oxygen on naturally formed co-oxides filter film in aqueous solution: combined characterization of XPS and TPD

The chemical adsorption of dissolved oxygen (DO) by co-oxide filter film-coated sands, formed through the filtration of ground water containing high concentrations of ammonia, manganese and iron, were studied. The results showed that the filter film consisted of silicates, carbonates, manganese and iron oxides and was constructed in a three-layer porous structure. The specific area of ...

Apr. 8, 2015

By IWA Publishing

Iron and manganese removal from groundwater by filtration through a chalcedonite bed

The aim of this research was to determine the effectiveness of iron and manganese removal from groundwater using chalcedonite sand as a filter bed in rapid filtration. The experiment was conducted at a pilot plant. At the first stage of research, chalcedonite and silica sand were compared. The ripening time for manganese removal of chalcedonite was 27 days while silica sand was ripened within ...

Jan. 23, 2015

By IWA Publishing

Filtration and manganese removal

Manganese removal through a filter bed is generally carried out and accepted by practitioners and researchers as occurring through catalytic oxidation at the surface of MnO2 coated media, although manganese passage through a coated media filter has been little investigated. To better understand the kinetics of Mn removal through a naturally coated filter, a pilot plant consisting of four filter ...

Oct. 21, 2013

By IWA Publishing

Biological active groundwater filters: exploiting natural diversity

In the Netherlands, biological trickling filters without chemical pre-oxidation are generally applied to treat anaerobic groundwater, containing methane, iron, ammonium and manganese. Previous research showed that all compounds can be removed in one filter step and that not only the ammonia oxidation (by nitrification), but also the iron oxidation is often a biological process, despite oxygen ...

Dec. 16, 2012

By IWA Publishing

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