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Effect of copper and other trace metal addition to pulp and paper wastewater
Citation
Barnett, JN and Richardson, D and Stack, K and Lewis, T, Effect of copper and other trace metal addition to pulp and paper wastewater, Water Environment Research, 87, (12) pp. 2076-2083. ISSN 1061-4303 (2015) [Refereed Article]
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Copyright Statement
Copyright 2015 Water Environment Federation
DOI: doi:10.2175/106143015X14362865227274
Abstract
Porous pots were used to mimic, on a laboratory scale, an industrial activated sludge plant from a thermomechanical pulp and newsprint paper mill. Trace metal additions of Ca, Co, Cu, Fe(III), and Mg were found to improve chemical oxygen demand removal from 82% to 86 to 87%. Copper (0.1 to 1.0 mg/L) was also found to be beneficial in significantly inhibiting the growth of filamentous bacteria, contributing to a reduction of 20 to 45% in sludge volume index (SVI) with improved settleability and decreased bulking. However, at levels of 1.0 mg/L and higher, the concentration of Cu in the porous pot effluent would potentially exceed guidelines for receiving waters. The fate and impact of Cu was affected by the presence of other trace metals, in particular Mg and Ca. The addition of Mg or Ca along with 0.5 mg/L Cu increased the amount of Cu in the aqueous phase to levels that would potentially exceed government environmental guidelines. Calcium addition was also found to inhibit the effect of Cu in reducing filamentous bacteria and SVI.
Item Details
Item Type: | Refereed Article |
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Keywords: | pulp and paper mill wastewater, trace metals, activated sludge, porous pots, cation addition |
Research Division: | Chemical Sciences |
Research Group: | Other chemical sciences |
Research Field: | Other chemical sciences not elsewhere classified |
Objective Division: | Manufacturing |
Objective Group: | Wood, wood products and paper |
Objective Field: | Paper products and pulp |
UTAS Author: | Barnett, JN (Mr Jason Barnett) |
UTAS Author: | Stack, K (Dr Karen Stack) |
UTAS Author: | Lewis, T (Associate Professor Trevor Lewis) |
ID Code: | 106729 |
Year Published: | 2015 |
Web of Science® Times Cited: | 2 |
Deposited By: | Chemistry |
Deposited On: | 2016-02-18 |
Last Modified: | 2017-10-25 |
Downloads: | 3 View Download Statistics |
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