Treatment of ammonia-polluted groundwater in North Bohemian brown coal mining region — Feasibility study

Kubal, Martin; Podhola, Martin; Patočka, Tomáš; Ciahotný, Karel; Kuraš, M.

doi:10.5004/dwt.2011.2616

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…These activities have produced relics of different quality and magnitude. In contrast to engineering reports in technical bulletins, there are only few scientific publications about the remediation of contaminated sites by this industry in peer-reviewed journals (Stottmeister et al 2009;Kubal et al 2011). Because of the increasing price for oil, carbon/lignite chemistry will probably experience a renaissance (Volkmann, Borner 2012;Zhou et al 2012).…”

Section: Extent Of Brown Coal Mining and Processing In Central Germanymentioning

confidence: 99%

Environmental Pollution by Wastewater From Brown Coal Processing ¬ a Remediation Case Study in Germany

Wießner

Müller

Kuschk

et al. 2014

Journal of Environmental Engineering and Landscape Management

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The large scale of the contamination by the former carbo-chemical industry in Germany requires new and often interdisciplinary approaches for performing an economically sustainable remediation. For example, a highly toxic and dark-colored phenolic wastewater from a lignite pyrolysis factory was filled into a former open-cast pit, forming a large wastewater disposal pond. This caused an extensive environmental pollution, calling for an ecologically and economically acceptable strategy for remediation. Laboratory-scale investigations and pilot-scale tests were carried out. The result was the development of a strategy for an implementation of full-scale enhanced in situ natural attenuation on the basis of separate habitats in a meromictic pond. Long-term monitoring of the chemical and biological dynamics of the pond demonstrates the metamorphosis of a former highly polluted industrial waste deposition into a nature-integrated ecosystem with reduced danger for the environment, and confirmed the strategy for the chosen remediation management.

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Section: Extent Of Brown Coal Mining and Processing In Central Germanymentioning

confidence: 99%

Environmental Pollution by Wastewater From Brown Coal Processing ¬ a Remediation Case Study in Germany

Wießner

Müller

Kuschk

et al. 2014

Journal of Environmental Engineering and Landscape Management

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“…Several methods are used for removing NH 4 þ from groundwater and environmental water. Examples include physicochemical methods such as reverse osmosis (Kubal et al 2011), ion exchange (Wang et al 2007), and adsorption (Siljeg et al 2010), and biological methods such as biofilters (Stembal et al 2004;Stembal et al 2005), trickling sand filters (de Vet et al 2009), and permeable reactive barriers (PRB) (Gibert et al 2008;Robertson et al 2008). Biological methods are considered ecofriendly and highly economical (Soares 2000;Huang et al 2018).…”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

Nitrogen removal from ammonium-contaminated groundwater using dropping nitrification–cotton-based denitrification reactor

et al. 2021

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A novel dropping nitrification–cotton-based denitrification reactor was developed for total nitrogen (N) removal from ammonium (NH4+)-contaminated groundwater. The nitrogen removal ability of the reactor was evaluated for 91 days. A 1 m long dropping nitrification unit was fed with synthetic groundwater containing 30 mg-NH4+-N/L at a flow rate of 2.16 L/d. The outlet of the dropping nitrification unit was connected to the cotton-based denitrification unit. The NH4+ present in the groundwater was completely oxidized (>90% nitrification efficiency) by nitrifying bacteria to nitrite (NO2–) and nitrate (NO3–) in the dropping nitrification unit. Subsequently, the generated NO2– and NO3– were denitrified (96%–98% denitrification efficiency) by denitrifying bacteria in the cotton-based denitrification unit under anoxic conditions. Organic carbons released from the cotton presumably acted as electron donors for heterotrophic denitrification. Nitrifying and denitrifying bacteria were colonized in higher abundance in the dropping nitrification and cotton-based denitrification units, respectively. The total N removal rate and efficiency of the dropping nitrification–cotton-based denitrification reactor for 91 days were 58.1–66.9 mg-N/d and 96%–98%, respectively. Therefore, the dropping nitrification–cotton-based denitrification reactor will be an efficient, sustainable, and promising option for total N removal from NH4+-contaminated groundwater.

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“…Although PRB is costeffective in the long run, it requires large-scale construction and incurs a high initial cost [18]. The physicochemical processes such as breakpoint chlorination [19], reverse osmosis membrane [20], ion exchange membrane [21], and adsorption [22] requires high-energy, advanced/complex management, regeneration of materials, and additional treatment of generated by-products in comparison to the biological processes [14,23]. The biological processes with low cost for construction and simple in operation and maintenance are mostly preferred.…”

Section: Introductionmentioning

confidence: 99%

Ammonium Removal from Alkaline Groundwater Using A Dropping Nitrification Unit with Sponge or Biofringe Material

Maharjan

Kamei

Mori

et al. 2021

J. of Wat. & Envir. Tech.

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Ammonium (NH 4 + ) contamination makes groundwater undrinkable. The dropping nitrification unit, a simple and low-cost biological unit, has been found to be effective for NH 4 + -removal from contaminated groundwater at a near-neutral pH. However, the pH of groundwater varies widely and is highly alkaline (pH 8.7−10) in some areas of the world, which could negatively affect the biological nitrification process. The objectives of this study were to investigate the NH 4 + -removal from alkaline groundwater using dropping nitrification units with sponge or biofringe material, compare their removal efficiencies, and characterize the effect of alkaline groundwater on the growth and activity of nitrifying bacteria. Synthetic alkaline groundwater (50 mg-NH 4 + -N L −1 ; pH 9.4 ± 0.1) was dropped from the top of 1-m long hanging units at 3 mL min −1 for 56 days. The NH 4 + -removal efficiency of sponge units (> 88%) was significantly higher than that of biofringe units (56−89%). The abundance of amoA gene of ammonia-oxidizing bacteria increased significantly over 56 days and was significantly higher in sponge units than in biofringe units, resulting in higher NH 4 + -removal in sponge units than that in biofringe units. This study demonstrated that dropping nitrification units can be used effectively for NH 4 + -removal from groundwater having a neutral to alkaline pH.

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Treatment of ammonia-polluted groundwater in North Bohemian brown coal mining region — Feasibility study

Cited by 4 publications

References 13 publications

Environmental Pollution by Wastewater From Brown Coal Processing ¬ a Remediation Case Study in Germany

Environmental Pollution by Wastewater From Brown Coal Processing ¬ a Remediation Case Study in Germany

Nitrogen removal from ammonium-contaminated groundwater using dropping nitrification–cotton-based denitrification reactor

Ammonium Removal from Alkaline Groundwater Using A Dropping Nitrification Unit with Sponge or Biofringe Material

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