Constructed wetlands for the Mediterranean countries: hybrid systems for water reuse and sustainable sanitation

Masi, Fabio; Martinuzzi, N.

doi:10.1016/j.desal.2006.11.014

Cited by 131 publications

(68 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, in the case where the goal of treatment is to provide a nitrified effluent, these results indicate that the two systems containing VF systems are preferred and are equally effective in maintaining bioavailable N which can be used for crop production. Other authors have arrived at the same conclusions when the treated wastewater is to be reused in irrigation [24].…”

Section: Nitratementioning

confidence: 51%

Comparative Study of Three Two-Stage Hybrid Ecological Wastewater Treatment Systems for Producing High Nutrient, Reclaimed Water for Irrigation Reuse in Developing Countries

Zurita

White

2014

Water

View full text Add to dashboard Cite

In this study, three different two-stage hybrid ecological wastewater treatment systems (HEWTS) with combinations of horizontal flow (HF) constructed wetlands (CWs), vertical flow (VF) CWs and stabilization ponds (SP) were evaluated for the removal of Organic-N, NH 4 + , NO 3 − , Total N, Total P, Total Coliforms (TCol) and Escherichia Coli, BOD, COD and TSS. The overall goal of the study was novel in comparison to most other studies in that we sought to evaluate and compare the efficiency of the three HEWTSs for water quality improvements, while minimizing nutrient removal from the wastewater in order to generate high quality reclaimed water for reuse for irrigation of crops. The most effective systems were those systems containing a vertical flow component, either HF-VF or VF-HF. In these two HEWTS, NH 4 + was reduced by 85.5% and 85.0% respectively, while NO 3 − was increased to 91.4 ± 17.6 mg/L and to 82.5 ± 17.2 mg/L, respectively, an artifact of nitrification. At the same time, E. coli was reduced by 99.93% and 99.99%, respectively. While the goal of most wastewater treatment is focused on reducing nutrients, the results here demonstrate that two-stage HEWTSs containing VF components can be used to produce a high quality effluent while retaining inorganic nutrients, thereby conserving this valuable resource for reuse as irrigation water for agriculture in subtropical developing countries where water and fertilizer resources are scarce or expensive.

show abstract

Section: Nitratementioning

confidence: 51%

Comparative Study of Three Two-Stage Hybrid Ecological Wastewater Treatment Systems for Producing High Nutrient, Reclaimed Water for Irrigation Reuse in Developing Countries

Zurita

White

2014

Water

View full text Add to dashboard Cite

show abstract

“…The transfer of water to the atmosphere is sometimes an advantage, mainly in humid environments [65]. On the other hand, in arid regions, where treated wastewater is destined for reuse, water loss may be disadvantageous [64,66,67]. Nevertheless, data on ET rates in CWs in general, and in arid lands in particular, are still scarce [36,45].…”

Section: Microclimatic Conditionsmentioning

confidence: 99%

Role of Plants in a Constructed Wetland: Current and New Perspectives

Shelef

Gross

Rachmilevitch

2013

Water

178

View full text Add to dashboard Cite

Abstract:The role of plants in the treatment of effluents by constructed wetland (CW) systems is under debate. Here, we review ways in which plants can affect CW processes and suggest two novel functions for plants in CWs. The first is salt phytoremediation by halophytes. We have strong evidence that halophytic plants can reduce wastewater salinity by accumulating salts in their tissues. Our studies have shown that Bassia indica, a halophytic annual, is capable of salt phytoremediation, accumulating sodium to up to 10% of its dry weight. The second novel use of plants in CWs is as phytoindicators of water quality. We demonstrate that accumulation of H 2 O 2 , a marker for plant stress, is reduced in the in successive treatment stages, where water quality is improved. It is recommended that monitoring and management of CWs consider the potential of plants as phytoremediators and phytoindicators.

show abstract

“…Constructed wetlands are also commonly seen as appropriate and low-cost systems for domestic wastewater treatment (Mandi et al 1996;Fahd et al 2007;El Hamouri et al 2007;Rousseau et al 2008;Masi et al 2010;Vymazal 2013). However, these systems could show high water loss due to a high evapotranspiration rate associated with plants (Masi and Martinuzzi 2007). El Hamouri et al (2007) reported that water loss by evapotranspiration reached 11 and 17% respectively for (Arundo donax L.) and (Phragmites australis (Cav.…”

Section: Introductionmentioning

confidence: 99%

Removal of bacterial indicators and pathogens from domestic wastewater by the multi-soil-layering (MSL) system

Latrach

Masunaga

Ouazzani

et al. 2014

Soil Science and Plant Nutrition

View full text Add to dashboard Cite

This paper presents the performance and behavior of a multi-soil-layering (MSL) system to remove fecal contamination bacteria indicators and pathogens from domestic wastewater. The experimental setup was performed using a laboratory-scale MSL system (depth 30 × width 36 × height 65 cm). The MSL system was composed of soil mixture blocks (SMB) arranged in a brick-like pattern and surrounded by permeable gravel layers (PL). The SMB comprised sandy soil, charcoal, sawdust and metal iron at a dry weight ratio of 7:1:1:1. The hydraulic loading rate was 200 L m −2 day −1. Bacteriological analyses comprised total bacterial count at 22 and 37°C, fecal coliforms, total coliforms, Escherichia coli, streptococci, intestinal enterococci and pathogenic bacteria: Clostridium sp., Staphylococcus sp., Pseudomonas sp. and Salmonella sp. The best removal efficiency was achieved for Staphylococcus sp. by 1.42 log unit, while the lowest removal efficiency was found for E. coli by 1.01 log unit. The mean removal efficiencies of total suspended solids (SS), biochemical oxygen demand (BOD5), chemical oxygen demand (COD), total nitrogen (TN) and total phosphorous (TP) were 93, 86, 81, 78 and 80%, respectively. Based on these results, the MSL system could efficiently remove organic matter, phosphorus and nitrogen. However, the performance to reduce bacterial indicators and pathogens was still moderate.

show abstract

Constructed wetlands for the Mediterranean countries: hybrid systems for water reuse and sustainable sanitation

Cited by 131 publications

References 9 publications

Comparative Study of Three Two-Stage Hybrid Ecological Wastewater Treatment Systems for Producing High Nutrient, Reclaimed Water for Irrigation Reuse in Developing Countries

Comparative Study of Three Two-Stage Hybrid Ecological Wastewater Treatment Systems for Producing High Nutrient, Reclaimed Water for Irrigation Reuse in Developing Countries

Role of Plants in a Constructed Wetland: Current and New Perspectives

Removal of bacterial indicators and pathogens from domestic wastewater by the multi-soil-layering (MSL) system

Contact Info

Product

Resources

About