Different Methods of Groundwater Remediation

June 4, 2020
What is Groundwater Remediation?

What is Groundwater Remediation?

Groundwater remediation is essential in a wide range of businesses, from drinking water extraction to mining. It’s hugely important to have the best water treatment system in place to help. Here are a few different methods that are used in water remediation that you may need to incorporate into your plan.

Physical Remediation

Water purification starts on a physical level, with the removal of the largest particles and obstructions that plague the water you are treating. One method, air sparging (or in situ air stripping), involves using pressurized air to strip water clean. A more common method is to pump water directly, with filters stripping away large gravel or rock materials, and then letting the water be further filtered biologically or chemically to ensure that its quality is clean.

Biological Remediation

Biological remediation methods utilize microorganisms to break down contaminants and remove them from the water. Methods include bioventing, biosparging or bioaugmentation. These biological materials help break down unwanted chemicals that aren't easily separated from the water, particularly in industrial waste that forms in groundwater. One advantage is that physically extracting groundwater out is not necessarily required to treat it through biological means.

Chemical Remediation

Chemical remediation can be achieved through a variety of methods, including carbon absorption, ion exchange, oxidation and chemical precipitation. Chemical remediation technologies are often used alongside physical water treatment to achieve the best results, and can help achieve the cleanest groundwater after the fact.

Ozone and UV Light

Additional methods of remediation involve the use of either ozone or ultraviolet light. Exposure to these substances helps purify water in different ways, but both are used with the intention of killing any unwanted microorganisms. Those organisms can then be filtered out, leaving behind cleaner and purer water.

These types of remediation serve as proof of how treating contaminated water is much more than pressurizing water through a filter. Groundwater treatment is as diverse as the numerous groundwater systems that exist in the world. There are some basic commonalities, like the existence of clay or sand in parts of the soil. Region and location can have an impact on the prevalence of specific physical, biological and chemical contaminants that need to be considered.

Groundwater remediation is meant to be strategic. Water treatment goals will help to identify the right tools to meet your needs, and it can result in achieving a higher quality of remediation results, faster. Most instances call for a balancing of multiple methods and techniques, depending on what contaminants you’re treating and for what purpose.

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