Manganese Mobilization and Enrichment during Soil Aquifer Treatment (SAT) of Effluents, the Dan Region Sewage Reclamation Project (Shafdan), Israel
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- 作者：Orly Oren ; Ittai Gavrieli ; Avihu Burg ; Joseph Guttman ; Boaz Lazar
- 刊名：Environmental Science & Technology
- 出版年：2007
- 出版时间：February 1, 2007
- 年：2007
- 卷：41
- 期：3
- 页码：766 - 772
- 全文大小：380K
- 年卷期：v.41,no.3(February 1, 2007)
- ISSN：1520-5851
文摘
The composition of groundwater reclaimed from tertiarysoil aquifer treatment systems reflects the dynamic processestaking place in the subsurface, between the infiltrationbasin and the production wells. At the end of year 2000,following more than a decade of operation, high Mnconcentrations (2 
mol L-1
Mn 40 mol L-1) appearedin the reclaimed effluents of the Dan Region SewageReclamation Project (Shafdan), Israel. A mass balanceindicates that the high Mn excess originated from the aquiferrocks, most likely following reduction of sedimentary Mn-oxides under suboxic conditions. The subsequentadsorption of the Mn2+ results in a slow Mn2+ front thatadvances in the direction of groundwater flow only when allthe Mn2+ exchangeable sites are saturated. A retardationfactor obtained from two independent estimates basedon a simple reduction-adsorption-advection model yieldsa value of about 10. This explains the delayed appearanceof the high Mn concentrations at a distance of only~500 m from the infiltration basin.
mol L-1 Mn 40 mol L-1) appearedin the reclaimed effluents of the Dan Region SewageReclamation Project (Shafdan), Israel. A mass balanceindicates that the high Mn excess originated from the aquiferrocks, most likely following reduction of sedimentary Mn-oxides under suboxic conditions. The subsequentadsorption of the Mn2+ results in a slow Mn2+ front thatadvances in the direction of groundwater flow only when allthe Mn2+ exchangeable sites are saturated. A retardationfactor obtained from two independent estimates basedon a simple reduction-adsorption-advection model yieldsa value of about 10. This explains the delayed appearanceof the high Mn concentrations at a distance of only~500 m from the infiltration basin.