Journal
BIORESOURCE TECHNOLOGY
Volume 99, Issue 13, Pages 5610-5616Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2007.10.033
Keywords
constructed wetland; molasses wastewater; Cyperus involucratus; Typha augustifolia; Thalia dealbata J. Fraser
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The surface flow constructed wetland (SFCW) with Cyperus involucratus, Typha augustifolia and Thalia dealbata J. Fraser was applied to treat anaerobic treated-mol asses wastewater (An-MWW) under the organic loading rates (OLRs) of 612, 696, 806, 929 and 1213 kg BOD5 ha(-1) day(-1). The results showed that both removal efficiency and plant growth rate were increased with the decrease of organic loading rate (OLR). All tested-plant species could not grow under OLR of higher than 696 kg BOD5 mg l(-1) (p > 0.05). Also, the plant-biomass of the systems was reduced by 10.4%, 26.5%, and 64.7% of initial plant-biomass under the OLR of 806, 929 and 1213 kg BOD5 ha(-1) day(-1), respectively. However, all tested-plant species showed the same pattern on the plant-biomass production yield and removal efficiency. The highest SS, BOD, COD, total phosphorus, NH4+, NO3- and molasses pigments (MP) removal efficiencies of 90-93%, 88-89%, 67%, 70-76%, 77-82%, 94-95% and 72-77%, respectively were detected under the OLR of 612 kg BOD5 ha-1 day. (C) 2007 Elsevier Ltd. All rights reserved.
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