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- Title
Studies on the Integration of Nanofiltration and Soil Treatment for Municipal Effluent Reclamation as a Groundwater Supplement.
- Authors
Wu Linlin; Zhao Xuan; Zhang Meng
- Abstract
Water shortage leads to increasing attention to artificial groundwater recharge by reclaimed water. An injection well is the most common recharge approach. In this paper, a new kind of integrated technology-short-term vadose soil treatment followed by nanofiltration-is recommended as pretreatment for artificial groundwater recharge by an injection well. Laboratory-scale experiments demonstrate that the short-term vadose soil can remove approximately 30% of the total dissolved organic carbon (DOC) content and 40% of dissolved organic matter with a molecular weight less than 1 kDa. As a compensatory process of soil treatment, nanofiltration offers a favorable desalination and additional organics removal. The removal efficiencies for total dissolved solids and conductivity amount to 45 and 48%, respectively. The residual DOC in the final effluent is below 1.0 mg/L. In addition, short-term vadose soil offers effective elimination of aromatic protein-like and polysaccharide-like substances, which are detected as components of the membrane foulant.
- Subjects
ARTIFICIAL groundwater recharge; NANOFILTRATION; MEMBRANE filtration in water purification; LAND treatment of wastewater; CARBON compounds; INJECTION wells; WATER reuse; WATER shortages
- Publication
Water Environment Research (10614303), 2010, Vol 82, Issue 1, p20
- ISSN
1061-4303
- Publication type
Article
- DOI
10.2175/106143009X442925