Treatment of potato farm wastewater with sand filtration. Issue 13 (2nd July 2016)

• Record Type: Journal Article
• Authors: Bosak, V.K.; VanderZaag, A.C.; Crolla, A.; Kinsley, C.; Chabot, D.; Miller, S.S.; Gordon, R.J.
• Is Part Of: Environmental technology. Volume 37:Issue 13(2016)
• Page Start: 1597
• Page End: 1604
• Publication Date: 2016-07-02
• Subjects: Wastewater treatment -- sand filtration -- total suspended solids -- potato wastewater -- vegetable wastewater; Environmental engineering -- Periodicals; Environmental protection -- Periodicals; 628.05
• DOI: 10.1080/09593330.2015.1122095
• Languages: English
• ISSNs: 0959-3330

Abstract

ABSTRACT: This study examined sand filtration as a component of a potato farm wastewater treatment system. Two different sand filter designs, saturated flow and unsaturated flow, were evaluated at three different loading rates: 34, 68, and 136 L m −2 d −1 . Filter design had a significant effect, with unsaturated flow sand filters having significantly ( p < .05) better total suspended solids (TSS) removal (89%) than saturated flow sand filters did (79%). Loading rate also had a significant ( p < .05) effect, given that the lowest loading rate had higher mass removal for TSS than the higher loading rates did. Overall, all sand filters removed TSS, 5-d biochemical oxygen demand, and total phosphorus well (62–99%). Total nitrogen removal was twice as high in unsaturated flow filters (53%) than in saturated flow filters (27%), because of the recurring cycle of aerobic and anaerobic conditions during sand saturation and drying in unsaturated flow sand filters.