Effectiveness of Domestic Wastewater Treatment Using a Bio-Hedge Water Hyacinth Wetland System
Abstractonstructed wetland applications have been limited by a large land requirement and capital investment. This study aimed to improve a shallow pond water hyacinth system by incorporating the advantages of engineered attached microbial growth technique (termed Bio-hedge) for on-site domestic wastewater treatment. A laboratory scale continuous-flow system consists of the mesh type matrix providing an additional biofilm surface area of 54 m2/m3. Following one year of experimentation, the process showed more stability and enhanced performance in removing organic matter and nutrients, compared to traditional water hyacinth (by lowering 33%–67% HRT) and facultative (by lowering 92%–96% HRT) ponds. The wastewater exposed plants revealed a relative growth rate of 1.15% per day, and no anatomical deformities were observed. Plant nutrient level averaged 27 ± 1.7 and 44 ± 2.3 mg N/g dry weight, and 5 ± 1.4 & 9±1.2 mg P/g dry weight in roots and shoots, respectively. Microorganisms immobilized on Bio-hedge media (4.06 × 107 cfu/cm2) and plant roots (3.12 × 104 cfu/cm) were isolated and identified (a total of 23 strains). The capital cost was pre-estimated for 1 m3/d wastewater at 78 US$/m3inflow and 465 US$/kg BOD5 removed. This process is a suitable ecotechnology due to improved biofilm formation, reduced footprint, energy savings, and increased quality effluent. View Full-Text
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Valipour, A.; Raman, V.K.; Ahn, Y.-H. Effectiveness of Domestic Wastewater Treatment Using a Bio-Hedge Water Hyacinth Wetland System. Water 2015, 7, 329-347.
Valipour A, Raman VK, Ahn Y-H. Effectiveness of Domestic Wastewater Treatment Using a Bio-Hedge Water Hyacinth Wetland System. Water. 2015; 7(1):329-347.Chicago/Turabian Style
Valipour, Alireza; Raman, Venkatraman K.; Ahn, Young-Ho. 2015. "Effectiveness of Domestic Wastewater Treatment Using a Bio-Hedge Water Hyacinth Wetland System." Water 7, no. 1: 329-347.