What are three examples of groundwater remediation techniques?
Ground water remediation techniques span biological, chemical, and physical treatment technologies. Most ground water treatment techniques utilize a combination of technologies. Some of the biological treatment techniques include bioaugmentation, bioventing, biosparging, bioslurping, and phytoremediation.
What are the different water remediation techniques?
There are two types of groundwater remediation: in situ (in place or on-site) and ex situ (off-site). The in-situ remediation approach involves cleaning the water where it is presently situated, rather than removing and transferring it elsewhere.
What are ways to remediate contaminated groundwater?
Pump and treat is a common method for cleaning up groundwater contaminated with dissolved chemicals, including industrial solvents, metals, and fuel oil. Groundwater is extracted and conveyed to an above-ground treatment system that removes the contaminants.
How do you remediate DNAPL?
Approaching Regulatory Closure As such, source reduction is increasingly being used to remove or destroy DNAPLs in the subsurface. Once a DNAPL source is addressed, residual ground water plumes may be more amenable to less aggressive remedial techniques such as monitored natural attenuation (MNA) (EPA 1999b).
What is the most effective solution to groundwater contamination?
At home
- properly dispose of all waste; don’t dump chemicals down drains or on the ground.
- test underground fuel oil tanks for leaks; if possible, replace them above ground.
- safely store all chemicals and fuels.
- minimize the use of chemicals; always use according to directions.
What is groundwater treatment process?
GROUNDWATER PROCESS Water is lifted to the surface by pumps from deep, small-diameter wells. Chlorine. Water is treated with a controlled and monitored dose of chlorine. Chlorine is used to disinfect, creating healthy, safe drinking water.
What are remediation techniques?
Environmental remediation techniques include excavation, dredging, oxidation, soil vapor extraction, thermal desorption, pump and treat, nanoremediation, and more.
What are remedial strategies?
Remedial strategy means 1 or a combination of the following 6 general approaches which may be employed in conjunc- tion with remedial measures as part of the remedy to achieve the remedial objectives: plume remediation, physical con- tainment, controlled migration, source control, monitoring, or no action.
Is PCE a DNAPL?
PCE is a dense non-aqueous phase liquid (DNAPL). A DNAPL is denser than and immiscible in water. In the presence of water, it will form a separate phase.
What are five ways to keep groundwater clean?
properly dispose of all waste. ensure proper waste water discharge connections; if possible, eliminate floor drains. properly use and maintain on-site septic systems….Storm water:
- keep chemicals and waste safe from rain.
- isolate drains from storage and loading areas.
- use deicing salt and pesticides sparingly.
What are some remediation technologies?
5 Source Remediation Technology Options
| Technology | Approach | Page # |
|---|---|---|
| Electrical Resistance Heating | Extraction/Transformation | 242 |
| Air Sparging | Extraction | 250 |
| Enhanced Bioremediation | Transformation | 256 |
| Explosives Technologies | Extraction/Transformation | 288 |
What is DNAPL and Lnapl?
Nonaqueous phase liquids are typically classified as either light nonaqueous phase liquids (LNAPLs) which have densities less than that of water, or dense nonaqueous phase liquids (DNAPLs) which have densities greater than that of water.
Is DNAPL heavier than water?
Most DNAPLs remain denser than water after they are released into the environment (e.g. spilled trichloroethene does not become lighter than water, it will remain denser than water).