Bioventing | Wikipedia audio article
Channel: wikipedia tts
Date: 29/03/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Groundwater_remediation


00:01:52 1 Techniques
00:02:49 1.1 Biological treatment technologies
00:02:59 1.1.1 Bioaugmentation
00:03:37 1.1.2 Bioventing
00:04:32 1.1.3 Biosparging
00:05:14 1.1.4 Bioslurping
00:06:23 1.1.5 Phytoremediation
00:07:05 1.1.6 Permeable reactive barriers
00:07:22 1.2 Chemical treatment technologies
00:07:32 1.2.1 Chemical precipitation
00:08:12 1.2.2 Ion exchange
00:08:52 1.2.3 Carbon absorption
00:09:15 1.2.4 Chemical oxidation
00:10:15 1.2.5 Surfactant enhanced recovery
00:11:42 1.2.6 Permeable reactive barriers
00:11:59 1.3 Physical treatment technologies
00:12:09 1.3.1 Pump and treat
00:12:33 1.3.2 Air sparging
00:13:05 1.3.3 Dual phase vacuum extraction
00:14:30 1.3.4 Monitoring-Well Oil Skimming
00:16:31 2 See also



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SUMMARY
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Groundwater remediation is the process that is used to treat polluted groundwater by removing the pollutants or converting them into harmless products. Groundwater is water present below the ground surface that saturates the pore space in the subsurface. Globally, between 25 per cent and 40 per cent of the world's drinking water is drawn from boreholes and dug wells. Groundwater is also used by farmers to irrigate crops and by industries to produce everyday goods. Most groundwater is clean, but groundwater can become polluted, or contaminated as a result of human activities or as a result of natural conditions.
The many and diverse activities of humans produce innumerable waste materials and by-products. Historically, the disposal of such waste have not been subject to many regulatory controls. Consequently, waste materials have often been disposed of or stored on land surfaces where they percolate into the underlying groundwater. As a result, the contaminated groundwater is unsuitable for use.
Current practices can still impact groundwater, such as the over application of fertilizer or pesticides, spills from industrial operations, infiltration from urban runoff, and leaking from landfills. Using contaminated groundwater causes hazards to public health through poisoning or the spread of disease, and the practice of groundwater remediation has been developed to address these issues. Contaminants found in groundwater cover a broad range of physical, inorganic chemical, organic chemical, bacteriological, and radioactive parameters. Pollutants and contaminants can be removed from groundwater by applying various techniques, thereby bringing the water to a standard that is commensurate with various intended uses.