On-site biological remediation of contaminated groundwater: a review

Langwaldt, Jörg; Puhakka, Jaakko A.

doi:10.1016/s0269-7491(99)00137-2

Cited by 103 publications

(28 citation statements)

References 48 publications

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“…Increased groundwater temperature may mobilize otherwise immobile contaminants by increasing solubility and reducing sorption (Knauss and Copenhaver 1995, ten Hulscher and Cornelissen 1996, Knauss et al 2000 or may increase contaminant toxicity (Noyes et al 2009). However, mixing of different chemical groundwater types, mobilization of nutrients, and increased groundwater temperature may accelerate biodegradation (Langwaldt and Puhakka 2000). In the Dutch cities of Eindhoven, Apeldoorn, and Utrecht, field and feasibility studies are currently being conducted to combine ATES with a groundwater remediation system (Slenders et al 2010).…”

Section: Chemical Impactsmentioning

confidence: 99%

Underground Thermal Energy Storage: Environmental Risks and Policy Developments in the Netherlands and European Union

Bonte¹,

Stuyfzand²,

Hulsmann³

et al. 2011

E&S

123

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ABSTRACT. We present an overview of the risks that underground thermal energy storage (UTES) can impose on the groundwater system, drinking water production, and the subsurface environment in general. We describe existing policy and licensing arrangements for UTES in the Netherlands, as well as the capability of the current and future Dutch policy and legal framework to minimize or mitigate risks from UTES on groundwater resources. A survey at the European Union member state level indicates that regulation and research on the potential impacts of UTES on groundwater resources and the subsurface environment often lag behind the technological development of and ever-growing demand for this renewable energy source. The lack of a clear and scientifically underpinned risk management strategy implies that potentially unwanted risks might be taken at vulnerable locations such as near well fields used for drinking water production, whereas at other sites, the application of UTES is avoided without proper reasons. This means that the sustainability of UTES as a form of renewable energy is currently not fully understood, and the technology may be compromising the natural resilience of the subsurface environment. We recognize three main issues that should be addressed to secure sustainable application of UTES: Scientific research is required to further elucidate the impacts of UTES on groundwater; cross-sectoral subsurface planning is required to minimize negative conflicts between UTES and other subsurface interests; and EU-wide guidelines and standards are required for quality assurance and control when installing UTES systems.

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Section: Chemical Impactsmentioning

confidence: 99%

Underground Thermal Energy Storage: Environmental Risks and Policy Developments in the Netherlands and European Union

Bonte¹,

Stuyfzand²,

Hulsmann³

et al. 2011

E&S

123

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“…Excessive irrigation drives water from the root zone of crops to the groundwater below (Chowdary et al 2005), carrying with them applied fertilizers and pesticides and their component nitrogen compounds, phosphorus, potassium and other minerals and chemical compounds (Langwaldt and Puhakka 2000). Because of the widespread areal extent of these contaminants, they are often referred to as "nonpoint-source" contaminants.…”

Section: Groundwater Contamination Due To Chemicalsmentioning

confidence: 99%

The International Scale of the Groundwater Issue

Fienen

Arshad

2016

Integrated Groundwater Management

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Throughout history, and throughout the world, groundwater has been a major source of water for sustaining human life. Use of this resource has increased dramatically over the last century. In many areas of the world, the balance between human and ecosystem needs is difficult to maintain. Understanding the international scale of the groundwater issue requires metrics and analysis at a commensurate scale. Advances in remote sensing supplement older traditional direct measurement methods for understanding the magnitude of depletion, and all measurements motivate the need for common data standards to collect and share information. In addition to metrics of groundwater availability, four key international groundwater issues are depletion of water, degradation of water quality, the water-energy nexus, and transboundary water conflicts. This chapter is devoted to introducing these issues, which are also discussed in more detail in later chapters.

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“…These carbon and oxygen poor environments have implications for the rate and pathway of organic contaminant degradation in groundwater (Langwaldt and Puhakka, 2000). Such processes are difficult to characterise in "undisturbed" aquifers and we must often rely on laboratory microcosms using disturbed matrix material.…”

Section: Persistence In the Groundwater Environmentmentioning

confidence: 99%