Technology of groundwater biological deferrization

Govorova, Zhanna; Muraveva, Ekaterina; Govorov, Vadim; Semenovykh, Vasiliy

doi:10.1051/matecconf/201825103036

Cited by 8 publications

(2 citation statements)

References 6 publications

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“…The IOB oxidation process is influenced by environmental changes such as oxidation–reduction capability, oxygen concentration, and pH. The bacteria also have the same behavior in the case of Mn, where in the absence of Fe in the water, the manganese will be oxidized by the bacteria into an insoluble form (Govorova et al, 2018; Lee et al, 2022). Because the IOB requires Fe (II) as an energy source, IOB can be found in anoxic conditions, as abiotic oxidation is limited (Bird et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Removal of Fe and Mn from the groundwater by using zeolite with Rossellomorea sp.

Lee

Aziz

Tajarudin

2023

Water Environment Research

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Groundwater is one of the alternatives to surface water that can be used for drinking water; however, it normally exists with high iron and manganese content. In this study, a column study was conducted to observe the elimination of iron (Fe) and manganese (Mn) in the groundwater under different retention times by using zeolite immobilized with iron‐oxidizing bacteria (IOB). Rossellomorea sp., representing an IOB, was found from the isolation process and was further cultured in the laboratory for immobilization into the natural zeolite as replacement materials for the sand filter. When the zeolite assisted with the Rossellomorea sp. was used, the elimination of Fe and Mn were 99.34% and 88.92%, respectively, compared to the removal of Fe and Mn, which were 93.62% and 93.73%, respectively, for media without immobilization. The presence of Rossellomorea sp. enhances the Fe oxidation, resulting in high removal of Fe. The Thomas and Yoon–Nelson models were performed in both raw zeolite and zeolite with IOB. The total coliform (most probable number [MPN]) increased from 70.8 to 307.6 MPN/100 mL because of the Rossellomorea sp. present that promotes the growth of coliform bacteria. In conclusion, the immobilization of zeolite with IOB is a potential technique to extract the Fe and Mn in the groundwater.Practitioner Points Zeolite incorporated with Rossellomorea sp. has higher removal performance of Fe, whereas the removal of Mn reduced compared to the raw zeolite. The presence of Rossellomorea sp. enhances the oxidation of ferrous iron and improves the removal of Fe in the groundwater because the ferric iron is the priority ion to be exchanged. The removal of UV254 increase when Rossellomorea sp. present in the zeolite because the Rossellomorea sp. consume the natural organic matter as carbon source.

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Section: Introductionmentioning

confidence: 99%

Removal of Fe and Mn from the groundwater by using zeolite with Rossellomorea sp.

Lee

Aziz

Tajarudin

2023

Water Environment Research

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“…Chemical and nonchemical methods are used depending on the quality of source water [4][5][6][7][8][9][10][11][12][13]. In recent years biological deferrization has been used more frequently [2,[14][15]. One of the common nonchemical methods of groundwater purification from iron compounds is the filtration through inert load with simplified water aeration by pouring it into the filter's distributing chamber.…”

Section: Introductionmentioning

confidence: 99%

Justification of modernization of groundwater treatment station

et al. 2021

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The main contaminants of groundwater are iron and manganese compounds, increased hardness, which are removed at groundwater conditioning stations. The article reviews the existing station that was built according to a conventional design and uses the method of simplified aeration with the following filtration through high-silica sand. Assessment of the technical condition of the station showed that the elements of the building are limited to work The filters are in poor condition, some of the filters are out of service, there are concrete corrosion, destruction of finishing layers in filters’ building, internal and external corrosion of metallic pipelines and valves, which depend on he quality of transported water. Wear of the technological pipelines is over 80%. Analysis of the efficiency of the station showed that it operates at 50% capacity and at the same time does not provide standards for the hardness of drinking water. Water consumption for the station’s own needs is 1.5 times higher than it was designed. There are no processing and reusing facilities for flushing water. Results of the technical and technological inspection of the station showed that there is a need for immediate modernization of the station including the improvement of the groundwater purification technology and bringing he quality to the standards for drinking water.

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