Manganese removal from groundwater : Role of biological and by Bruins, Jantinus Henderikus

By Bruins, Jantinus Henderikus

In The Netherlands, Belgium and different ecu international locations, manganese is got rid of through traditional groundwater therapy with aeration and speedy (sand) filtration. this sort of remedy strategy is simple to function, good value and sustainable, since it doesn't utilize powerful oxidants comparable to O3, Cl2, ClO2 and KMnO4 with the linked threat of spinoff formation and over or less than dosing.

However, software of aeration-filtration is usually dealing with drawbacks, particularly the lengthy ripening time of filter out media. as a result lengthy ripening time, water businesses need to waste huge volumes of taken care of water, making this approach much less sustainable. additionally, bills linked to clear out media ripening (man strength, electrical energy, operational and research bills) are excessive. hence lowering the filter out ripening time, relating to manganese elimination is a huge issue.

Although already prolonged learn has been performed into manganese removing, the controlling mechanisms, in particular of the beginning up face of clear out media ripening, will not be totally understood but. The emphasis of this thesis is to supply a greater knowing of the mechanisms taken with the ripening of virgin filter out media, relating to manganese elimination and the way to shorten or thoroughly get rid of the lengthy ripening interval of filters with virgin material.

This thesis consequently highlights the function of the formation of a manganese oxide coating on virgin filter out media. Characterization and identity printed that the in charge manganese oxide for a good manganese removing used to be Birnessite. It was once came across that Birnessite, shaped at first of the ripening strategy used to be of a organic starting place. in keeping with the data that manganese removing in traditional groundwater therapy is initiated biologically, lengthy ripening instances could be diminished through growing stipulations favouring the expansion of manganese oxidizing micro organism, e.g., by restricting the again wash frequency and / or depth. also, this thesis additionally exhibits that using freshly ready manganese oxide, containing Birnessite, can thoroughly dispose of clear out media ripening time.

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By Bruins, Jantinus Henderikus

In The Netherlands, Belgium and different ecu international locations, manganese is got rid of through traditional groundwater therapy with aeration and speedy (sand) filtration. this sort of remedy strategy is simple to function, good value and sustainable, since it doesn't utilize powerful oxidants comparable to O3, Cl2, ClO2 and KMnO4 with the linked threat of spinoff formation and over or less than dosing.

However, software of aeration-filtration is usually dealing with drawbacks, particularly the lengthy ripening time of filter out media. as a result lengthy ripening time, water businesses need to waste huge volumes of taken care of water, making this approach much less sustainable. additionally, bills linked to clear out media ripening (man strength, electrical energy, operational and research bills) are excessive. hence lowering the filter out ripening time, relating to manganese elimination is a huge issue.

Although already prolonged learn has been performed into manganese removing, the controlling mechanisms, in particular of the beginning up face of clear out media ripening, will not be totally understood but. The emphasis of this thesis is to supply a greater knowing of the mechanisms taken with the ripening of virgin filter out media, relating to manganese elimination and the way to shorten or thoroughly get rid of the lengthy ripening interval of filters with virgin material.

This thesis consequently highlights the function of the formation of a manganese oxide coating on virgin filter out media. Characterization and identity printed that the in charge manganese oxide for a good manganese removing used to be Birnessite. It was once came across that Birnessite, shaped at first of the ripening strategy used to be of a organic starting place. in keeping with the data that manganese removing in traditional groundwater therapy is initiated biologically, lengthy ripening instances could be diminished through growing stipulations favouring the expansion of manganese oxidizing micro organism, e.g., by restricting the again wash frequency and / or depth. also, this thesis additionally exhibits that using freshly ready manganese oxide, containing Birnessite, can thoroughly dispose of clear out media ripening time.

Show description

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Additional resources for Manganese removal from groundwater : Role of biological and physico-chemical autocatalytic processes

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3 Materials and Methods Data presented in this paper are based on information gathered from over 100 groundwater treatment plants (GWTPs) from The Netherlands (65), Belgium (34), Germany (6), Jordan (1) and Serbia (1). The data was mainly collected through questionnaire, or by visiting selected plants and interviewing key employees that have extensive operational experience. The focus of the inventory was on the plants that have a (down flow) single aeration- filtration treatment (with simultaneously removal of manganese, iron and ammonia) or on the 1st filtration step for plants that have multiple aeration-filtration steps.

Bruins, Branislav Petrusevski, Yness M. Slokar, Joop C. Kruithof, Maria D. Kennedy (2015). Manganese removal from groundwater: characterization of filter media coating. Desalination & Water Treatment, 55 (7), 1851 – 1863.

Environmental Health Perspectives, 115 (11), 1533-1538. , Sparks. W. 1988. Oxidation of Manganese and formation of Mn3O4 (Hausmannite) by spore Coats of a marine Bacillus sp. Applied and environmental microbiology, 54 (8), 2140-2143. , Bray, R. 2000. The role of Physico-Chemical and Biological Processes in Manganese and Ammonia Nitrogen Removal from Groundwater. Polish Journal of Environmental studies, 9 (2), 91-96. Post, J. E. 1999. Manganese oxide minerals: Crystal structures and economic and environmental significance, Proceedings of the National Academy of Sciences USA, 96, 447-3454.

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