Soil aquifer treatment of artificial wastewater under saturated conditions
Type
ArticleKAUST Department
Biological and Environmental Sciences and Engineering (BESE) DivisionEnvironmental Science and Engineering Program
Water Desalination and Reuse Research Center (WDRC)
Date
2011-06-05Online Publication Date
2011-06-05Print Publication Date
2011-08Permanent link to this record
http://hdl.handle.net/10754/561768
Metadata
Show full item recordAbstract
A 2000 mm long saturated laboratory soil column was used to simulate soil aquifer treatment under saturated conditions to assess the removal of chemical and biochemical oxygen demand (COD and BOD), dissolved organic carbon (DOC), nitrogen and phosphate, using high strength artificial wastewater. The removal rates were determined under a combination of constant hydraulic loading rates (HLR) and variable COD concentrations as well as variable HLR under a constant COD. Within the range of COD concentrations considered (42 mg L-1-135 mg L-1) it was found that at fixed hydraulic loading rate, a decrease in the influent concentrations of dissolved organic carbon (DOC), biochemical oxygen demand (BOD), total nitrogen and phosphate improved their removal efficiencies. At the high COD concentrations applied residence times influenced the redox conditions in the soil column. Long residence times were detrimental to the removal process for COD, BOD and DOC as anoxic processes and sulphate reduction played an important role as electron acceptors. It was found that total COD mass loading within the range of 911 mg d-1-1780 mg d-1 applied as low COD wastewater infiltrated coupled with short residence times would provide better effluent quality than the same mass applied as a COD with higher concentration at long residence times. The opposite was true for organic nitrogen where relatively high concentrations coupled with long residence time gave better removal efficiency. © 2011.Sponsors
The study was carried out with support from The Netherlands Organisation for International Cooperation in Higher Education (Nuffic).Publisher
Elsevier BVJournal
Water ResearchPubMed ID
21700308ae974a485f413a2113503eed53cd6c53
10.1016/j.watres.2011.05.017
Scopus Count
Related articles
- Organic and nitrogen removal in a two-stage rotating biological contactor treating municipal wastewater.
- Authors: Hiras DN, Manariotis ID, Grigoropoulos SG
- Issue date: 2004 May
- Upflow anaerobic sludge blanket reactor--a review.
- Authors: Bal AS, Dhagat NN
- Issue date: 2001 Apr
- Enhanced removal of chemical oxygen demand, nitrogen and phosphorus using the ameliorative anoxic/anaerobic/oxic process and micro-electrolysis.
- Authors: Bao KQ, Gao JQ, Wang ZB, Zhang RQ, Zhang ZY, Sugiura N
- Issue date: 2012
- Pumped flow biofilm reactors (PFBR) for treating municipal wastewater.
- Authors: O'Reilly E, Rodgers M, Zhan XM
- Issue date: 2008
- Biodegradation of diesel fuel-contaminated wastewater using a three-phase fluidized bed reactor.
- Authors: Lohi A, Alvarez Cuenca M, Anania G, Upreti SR, Wan L
- Issue date: 2008 Jun 15