By McDonald, Chris; Meggyes, T.; Simon, Franz-Georg
This booklet incorporates a collection of the main updated examine on reactive obstacles and pump-and-treat, with the focus on heavy steel removing. After facing common problems with groundwater remediation utilizing lively and passive approaches, remediation engineering perform is mentioned with an emphasis on heavy steel remediation, sorption kinetics ...
summary: This e-book incorporates a collection of the main up to date learn on reactive boundaries and pump-and-treat, with the focus on heavy steel removing. After facing normal problems with groundwater remediation utilizing lively and passive techniques, remediation engineering perform is mentioned with an emphasis on heavy steel remediation, sorption kinetics
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Extra resources for Advanced groundwater remediation : active and passive technologies
1998 Special Session. Treatment Walls and Permeable Reactive Barriers, Vol. 229, pp. 6–16. North Atlantic Treaty Organization, Vienna. BEITINGER, E. and BÜTOW, E. (1997). Konstruktive und herstellungstechnische Anforderungen an unterirdische, durchströmte Reinigungswände zur in-situ Dekontamination. In H. P. ), Grundwassersanierung 1997, Berlin, pp. 342–356. Erich Schmidt, Berlin. BEITINGER, E. and FISCHER, W. (1994). Permeable treatment bed for use in purifying contaminated ground water streams in situ.
Soil excavation in low-strength strata can be performed by slurry jets and in high-strength strata by a milling head which can be attached to the drilling pipe and operated by a hydraulic motor. The drillings can be transported to the surface through the drilling pipe by means of a jet pump. Where slurry jets are used in the trench excavation, both the jet cutting head and the jet pump can be operated by the same slurry pump. Depending on construction process and the final barrier requirements, the slurry can either remain in the trench after excavation is complete and form the final barrier 47 24 ADVANCED GROUNDWATER REMEDIATION Hoist Arch or drum screen Drillings Slurry pump Hydraulic unit Slurry container Slurry hose Jet pump Hinged connector Stop-end tube Jet cutting head Fig.
The modified surface was found to be stable at pH values from 3 to 10, high ionic strengths and on exposure to organic solvents. The removal of metal ions with different inorganic sorbent materials was examined in a comparative study by Lehmann et al. (1999). They found that various modifications of ferric oxyhydroxide are strong sorbents for several heavy metals such as chromium or zinc. 1200 1000 800 600 400 200 0 –200 –400 –600 –800 –1000 Wate r oxid ized Fe2+/Fe3+ Cr 3+/Cr 6+ Fe/Fe2+ 0 2 Wate r redu ced 4 8 6 10 12 14 pH Fig.
Advanced groundwater remediation : active and passive technologies by McDonald, Chris; Meggyes, T.; Simon, Franz-Georg