bentonite seal Articles
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How to set up a groundwater monitoring test site
When it comes to groundwater monitoring, testing the water often requires the creation of a borehole at the test site to reach the water below. The process of creating a safe and secure site for everyone involved can sometimes be a lengthy process. The size of the borehole, which drill to use and the response zone are just a few of the considerations that will need to be taken into account ...
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Groundwater Contamination Plume Remediation - Case Study
19 CMT Multilevel Systems Successfully Installed in Challenging A facility in Pontypool, Wales, UK was once the location of a plastic forming plant. Over time, chemicals produced through the plastic forming processes were lost into the groundwater beneath the facility, creating a large contaminant plume. Years later it was determined that the plume is migrating off site. In order to intercept ...
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Canal sealing with Bentofix case study
After the first pilot project installation of a geosynthetic clay liner (GCL) in a 1 km long section of the Havel-Oder-Waterway in 1997/98, approved by the local German Water and Ship Authority a second project followed shortly after. In a 500 m long section of the Dortmund-Ems-Canal a newly developed innovative GCL was installed under water. The installed GCL was Bentofix BZ 13-B, a ...
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Capping of black devon landfill, Alloa, Scotland case study
The area of contention was Black Devon, a pre legislative landfill of the old „dig and dump“ variety on the banks of the river Forth, outside of Alloa, Scotland. Alloa is situated at the foot of the stunning Ochill Hills in the county of Clackmannanshire and is close to the port of Grangemouth. The landfill had been accepting wastes over many years from neighbouring industries ...
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Federal motorway A6 Mannheim-Heilbronn case study
Stable RiStWag -construction guidelines for roadways in water preservation areas Included in the A6 federal motorway construction project lot Mannheim – Heilbronn/Weinsberg, AS Bad Rappenau – AS Neckarsulm is the widening of km 631+640 and km 641+060 to six lanes. This section is runs through a water preservation zone, type IIIa, protected under RiStWag. Because of this, a sealing ...
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The “Straight Skinny” on bentonite-based drilling muds & their standard practice use in the horizontal remediation well industry
Let’s make our point up front: 1) bentonite-based drilling fluid is NOT bad for horizontal remediation well (HRW) projects; 2) it does not damage the formation; 3) it is a naturally occurring clay material that is mined; and 4) it does flush easily/adequately during well development. Most remediation professionals have designed and/or installed vertical wells at one time or another during ...
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Why Bentonite Hurts Well Production: The Case for Biopolymer Drilling Fluid
Bentonite is a naturally-occurring clay material, largely composed of the mineral, sodium mont-morillonite. The dominant property of bentonite is that it swells to many times its dry volume when hydrated by water, forming a viscous fluid with high gel strength. This makes bentonite an excellent product when used as a sealant, for preventing the influx of surface water into a well, sealing ...
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Design Considerations for Multilevel Monitoring Wells
Untitled Document ABSTRACT Much has been written about the advantages of multilevel (multiport) monitoring wells over clustered or nested monitoring wells, however, there is little published information that provides helpful hints and 'dos and don'ts' for planning successful multilevel well projects. This paper discusses the differences in both design and construction ...
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Microbubble Oxidation Smokes MTBE and BTEX. C-Sparge Ozone Microsparging for Rapid Removal of MTBE and Benzene
Untitled Document Figure 1. Master Control Unit A system called C-SpargingTM which uses ozone/air injected periodically in conjunction with a pulsing pump has been demonstrated to reduce MTBE from over 1000 ppb to less than 100 ppb in less than 40 days. The rate of decay was found to be a ten-fold reduction in monitoring wells located 3 ...
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