Bioclogging | Wikipedia audio article
Channel: wikipedia tts
Date: 28/03/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Bioclogging


00:01:04 1 General description
00:01:13 1.1 Change in permeability with time
00:02:27 1.2 Various types of clogging
00:04:18 2 Field observation
00:04:27 2.1 Under ponded infiltration
00:04:37 2.1.1 Field problem and countermeasure
00:06:09 2.1.2 Benefit
00:07:06 2.2 In aquifer
00:07:15 2.2.1 Water withdrawal from well
00:07:42 2.2.2 Bioremediation
00:08:15 2.2.3 Oil recovery
00:09:02 3 See also



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SUMMARY
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Bioclogging or biological clogging is clogging of pore space in soil by microbial biomass; their body and their byproducts such as  extracellular polymeric substance (EPS). The microbial biomass blocks the pathway of water in the pore space, forming a certain thickness of impermeable layer in soil, and it reduces the rate of infiltration of water remarkably.
Bioclogging is observed under continuous ponded infiltration at various field conditions such as artificial recharge ponds, percolation trench, irrigation channel, sewage treatment system and landfill liner. It also affects groundwater flow in aquifer, such as permeable reactive barrier and microbial enhanced oil recovery. In the situation where infiltration of water at appropriate rate is needed, bioclogging can be problematic and countermeasures such as regular drying of the system are taken. In some cases bioclogging can be utilized to make impermeable layer to minimize the rate of infiltration.