manganese water Articles
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Manganese waste water treatment by fungi derived from manganese slag
The aim of this study was to isolate a mould from the surface of manganese slag which had strong resistance and high adsorption of Mn2 + , and to determine the effects of initial Mn2 + concentration, incubation temperature, rotation speed and inoculation amount on adsorption of Mn2 + from manganese waste water solution. The result showed that a mould (A5) which was isolated from manganese slag ...
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Manganese in Surface Water Sources
Manganese is one of the most abundant metals on the earth’s surface and various forms of it can be found in air, in soil, and in water. It doesn’t occur naturally in a pure state; oxides, carbonates and silicates are the most important manganese-containing minerals. When Manganese forms compounds in the environment with oxygen, sulfur (S), and chlorine, the resultant compounds are ...
By Coftec
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The content of some microelements in mineral waters from Covasna and Harghita Romanian districts
Using two analytical techniques, CSV/ASV and ICP–AES, the concentration of some microelements (lead, zinc, manganese) in mineral waters from the Covasna and Harghita districts of Romania were determined. The optimum parameters for the voltammetric determination of manganese, copper, zinc and lead were established (electrolyte, deposition time, pulse duration, pulse amplitude, etc.) and then the ...
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Lab plus international interviews ITS president
The US-based company Industrial Test Systems (ITS) is a relatively young start-up company but is already making a big name for itself in the field of sensitive yet simple-to-use kits for water testing. The dynamism of the company can be seen from their constant challenging of the status quo to see if new and improved methods of water testing are possible. The most recent example of this is the ...
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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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Impact of speciation on removal of manganese and organic matter by nanofiltration
The removal of manganese and humic acid (HA) by two nanofiltration membranes, TFC-SR2 and TFC-SR3, was investigated in order to highlight the influence of speciation on manganese and HA retention. Manganese speciation and complexation with HA were modelled to understand how speciation could affect NF removal mechanisms. The behaviour of the two membranes was dramatically different in terms of ...
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What are Causes of a Manganese Spike in Drinking Water?
We have discussed Manganese in surface water sources and the potential issues when stratification in the water source occurs. The level of dissolved Manganese in surface water i.e., with a reservoir can increase dramatically or ‘spike’ under certain conditions. Our previous blog explored those conditions and the issues which are caused by a manganese increase or ‘spike’. ...
By Coftec
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Monitoring the effectiveness of advanced sorption materials for removing selected metals from water
There are a number of ways to remove heavy metals from water. Sorption on granular media based on iron oxides and hydroxides is currently the most used option. The experiment was carried out using sorption materials GEH, CFH 0818, CFH 12 and Bayoxide, which are primarily designed to remove arsenic from water. Four columns were prepared with an inner diameter of 4.4 cm for the purpose of the ...
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Study of metal pollution in Sembrong River, Johor, Malaysia
Sampling of the Sembrong River over a 9-month period revealed maximum total aluminium (Al), ferum (Fe) and manganese (Mn) concentrations of 61.0, 33.0 and 1.5 mg/L, respectively, and pH as low as 2.5, making it one of the most metal- and acid-contaminated rivers in Malaysia. The river serves as a fresh water source to water treatment plants located at the downstream reach of the river, which ...
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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 ...
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Biological drinking water treatment Hong Kong
The water treatment works takes water from the river Dongjiang in the Guangdong Province north of Hong Kong. The raw water has an average turbidity level of around 11 NTU and contents, among other things, ammonia and manganese. Water temperatures range from 12 to 34oC. During planning of the waterworks use of primary aerated biological filters (PABF) was selected for removal of ammonia and ...
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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 ...
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Tongren City, Guizhou: Manganese Recovery, Water Reuse Case Study
Guizhou has rich deposits of many minerals including manganese (Mn) used for battery production, etc. Manganese mining and processing accounts for 40% of GDP of Tongren City, ...
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Manganese in Madison’s Drinking Water
Public concern over events of manganese-discolored drinking water and the potential for adverse health effects from exposure to excess manganese reached a high level in 2005. In response, Public Health Madison Dane County, together with the Madison Water Utility, conceived and implemented a public health/water utility strategy to quantify the extent of the manganese problem, determine the ...
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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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Rethinking aesthetic guidelines for manganese and iron in drinking water
Manganese and iron are both internationally known causes of aesthetic issues in drinking water, however, there are limited data supporting their specific aesthetic guidelines, of which typical values are 0.05 mg/L Mn and 0.3 mg/L Fe. This study aims to clarify the concentrations at which off-flavors and off-colors caused by manganese and iron may be detected by consumers. Triangle tests of ...
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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 ...
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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 ...
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Green Sand Filters, Chile
INTRODUCTION In August 2013, Pure Aqua, Inc. manufactured and supplied Green Sand Filters to a major company in Chile to lower the manganese and iron level in well water. The system came complete with tank, top mounted valves, and high quality green sand media. The system was designed to produce 24 GPM. Since the initial startup, the system has been functioning accordingly with minimal ...
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City of Aurora, Oregon - Case Study
In late 2009, Water Works Engineers contacted AdEdge to design and implement an arsenic, iron, and manganese removal system to serve the City of Aurora, Oregon. The existing water supply consisted of three wells feeding into a centralized distribution system with a maximum combined capacity of 500 gpm. The site had an arsenic level of 12 ppb, above the EPA's MCL of 10 ppb. The City of Aurora also ...
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