Effect of Substrate, Feeding Mode and Number of Stages on the Performance of Hybrid Constructed Wetland Systems

被引：11
作者：
Alberto Herrera-Melian, Jose [1 ]
Borreguero-Fabelo, Alejandro [1 ]
Arana, Javier [1 ]
Penate-Castellano, Nestor [1 ]
Alejandro Ortega-Mendez, Jose [1 ]
机构：
[1] Univ Las Palmas Gran Canaria, Inst Environm Studies & Nat Resources I UNAT, Las Palmas Gran Canaria 35017, Spain
来源：
WATER | 2018年 / 10卷 / 01期
关键词：
forest waste; palm mulch; constructed wetlands; vertical flow; WASTE-WATER TREATMENT; GREENHOUSE-GAS EMISSION; NITROGEN REMOVAL; REUSE; PATHOGENS; QUALITY; IMPACT; SOIL;
D O I：
10.3390/w10010039
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A hybrid constructed wetland mesocosm has been used for the treatment of raw urban wastewater. The first stage was a mulch-based, subsurface, horizontal flow constructed wetland (HF). The HF achieved good removals of COD (61%; 54 g/m(2).day) and Total Suspended Solids (84%; 29 g/m(2).day). The second stage was composed of vertical flow constructed wetlands (VF) that were employed to study the effect of substrate (gravel vs. mulch), feeding mode (continuous vs. intermittent) and the number of stages (1 vs. 2) on performance. High hydraulic and organic surface loadings (513-583 L/m(2).day and 103-118 g/m(2).day of COD) were applied to the reactors. The mulch was more efficient than gravel for all the parameters analyzed. The continuous feeding allowed a 3 to 6-fold reduction of the surface area required.
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页数：14
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