groundwater manganese Articles
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Transformation of an existing physicochemical plant for iron and manganese removal by the application of biological processes
A system for removing iron and manganese in groundwater, based on biofiltration technology, was developed at the Center of Sanitary Engineering of the National University of Rosario, Argentina. This process has been successfully applied in several new water treatment plants in Argentina. This paper describes the transformation of an existing plant for iron and manganese removal in groundwater ...
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Removal of manganese ions from synthetic groundwater by oxidation using KMnO4 and the characterization of produced MnO2 particles
The aim of this study is to investigate the conditions for the removal of manganese ions from synthetic groundwater by oxidation using KMnO4 to keep the concentration below the allowed level (0.05 mg/L). The process includes low-level aeration and addition of KMnO4 in a Jar test system with Mn2 + concentration of 0.50 mg/L, similar to that of natural groundwater in Taiwan. Different parameters ...
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7 Things to know about manganese
Manganese is one of the most abundant metals in the Earth’s crust and is an essential element for human consumption. But when it comes to its presence in drinking water, manganese brings a whole host of unique considerations ranging from health effects to aesthetic issues. Here are some key facts about manganese as it relates to drinking water. 1. Manganese is found in more than 100 ...
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Effectiveness of oxidative filter materials for manganese removal from groundwater
The experiments reported in this paper were conducted at a pilot plant consisting of filtration columns filled with oxidative filter materials. The installation was supplied with water containing manganese in concentrations ranging from 0.2 to 1.4 mg/L. The aim of the experiments was to determine the effectiveness of manganese removal on the three filter media as a function of their internal ...
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The on-site feasibility study of iron and manganese removal from groundwater by hollow-fiber microfiltration
The aim of this research was to investigate the removal of iron and manganese from groundwater by aeration, chlorine oxidation and microfiltration (MF). Pilot-scale experiments were performed at the Chang-Hua Water Treatment Plant in Taiwan. The raw waters contained soluble iron (0.4 mg/L) and manganese (0.5 mg/L) which were oxidized by chlorine and then filtered by hollow-fiber PTFE-MF. The ...
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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 ...
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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 ...
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Treament of Hydrogen Sulfide (H2s)
This gas is often found in groundwater that contains iron and manganese. It is easily identified by its "rotten egg" odor. In addition to causing serious taste and odor problems, sulfide also promotes the growth of sulfur bacteria. Hydrogen sulfide can cause corrosion problems with iron and concrete pipes and reservoirs. Sulfides are formed by the anaerobic reduction of sulfates and organic ...
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Elevated levels of iron in groundwater in Prey Veng province in Cambodia: a possible factor contributing to high iron stores in women
Iron is a natural element found in food, water and soil and is essential for human health. Our aim was to determine the levels of iron and 25 other metals and trace elements in groundwater from 22 households in Prey Veng, Cambodia. Water analyses were conducted using inductively coupled plasma–mass spectrometry and optical emission spectrometry. Compared to the 2011 World Health ...
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Technology for treatment of groundwater simultaneously containing iron, manganese, ammonium and organic matter
The groundwater used as drinking water often contains unacceptable amounts of iron and manganese compounds and ammonium ions. These substances are efficiently removed using conventional technologies (aeration and filtration through granular media filters). However, the efficiency is drastically reduced for water containing considerable amounts of organic matter, which usually enters the water ...
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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 ...
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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 ...
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Simultaneous removal of arsenic, iron and manganese from groundwater by oxidation-coagulation-adsorption at optimized pH
The method based on oxidation-coagulation-adsorption at optimized pH (OCOP) using NaHCO3, KMnO4 and FeCl3 as pH conditioner, oxidant and coagulant, respectively, is an efficient and low-cost method for removal of arsenic from groundwater that has been gaining popularity in India. In a recent modification of OCOP, coexisting ferrous iron of water was utilized in order to lower the dose of ...
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Biological iron and manganese removal, pilot and full scale applications
Both manganese and iron are found in surface and ground waters at varying concentration levels. When present even at low concentrations they can be linked to the following problems: discolouration, turbidity and taste problems or form slime and iron noxide or manganese dioxide accumulations in pipes. Both metals promote the growth of certain types of chlorine tolerant micro-organisms in water ...
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Assessment of manganese removal from over 100 groundwater treatment plants
The aim of this study was to make an inventory of water quality and operational parameters which could affect manganese removal through aeration and rapid sand filtration and to establish correlations between these parameters and manganese removal efficiency. The focus of the overview was on manganese removal efficiency in the first aeration-filtration stage of conventional groundwater ...
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Oxygen Generation for the Ozonation of Process and Drinking Water
Purity is in the Air Ozonation can help remove chemical elements such as iron or manganese as well as organic substances and bacteria from the untreated water. The oxygen needed for this is produced using special oxygen generators. Water is possibly the most important asset there is. However, untreated water is usually contaminated with various substances and has to be treated before it can be ...
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Ion ScaleBuster Water Conditioning - Pre Membrane Pretreatment 2 - Case Study
OVERVIEW Solutions Limpides (Granby QC) has been experimenting with ScaleBuster® conditioners as part of membranes (RO - Reverse Osmosis, UF – Ultra Filtration and now also NF – Nano Filtration) pre-treatment since 2014 for hard and veryhard water. WATER SYSTEM CHALLENGES In rural Quebec, most residential water supply comes from wells. When Hardness exceeds 5 gpg (85 ppm) with ...
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Polyphosphates for in situ uranium immobilization - Case Study
INFORMATION Carus Corporation has a long history of developing and providing a variety of permanganate products for chemical oxidation applications. Carus is also a leading provider of phosphate products for sequestration and corrosion control. Phosphates are widely used as water treatment chemicals (dry or liquid solutions) to correct problems resulting from inorganic groundwater contaminants ...
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Project profile - Brandywine Elementary School New Palestine, Indiana AD26 arsenic, iron, manganese removal system
Background In July 2009, AdEdge Technologies Inc. (AdEdge) was contacted by Ladd Engineering, Inc. to provide a proposal for the Brandywine Elementary School in the Southern Hancock School District. Shortly thereafter, AdEdge was selected to provide a potable water treatment system to the school to reduce elevated levels of arsenic, iron, and manganese that exceeded drinking water standards. ...
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Evaluation of Ceralite-A as Ammonia Removal Biological Treatment Support Media - Case Study
Project Description A novel biological oxidation filtration treatment process was evaluated for removal of ammonia from a California groundwater source. In addition to ammonia, this groundwater had other contaminants such as iron, manganese, methane, hydrogen sulfide odor, color, high organic carbon, etc. As such, more conventional treatment processes such as breakpoint chlorination were deemed ...
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