Effects of treated wastewater irrigation on lemon trees

Pedrero, F.; Alarcón, Juan José

doi:10.1016/j.desal.2008.07.017

Cited by 103 publications

(77 citation statements)

References 11 publications

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“…This does not adequately address the possible risks to the environment and human health posed by the thousands of potential trace organic pollutants in reclaimed wastewater although these wastewaters (whether domestic or industrial) have been treated by municipal wastewater treatment plants. Many studies have been undertaken on inorganic compounds (e.g., Klay et al, 2010;Papadopoulos et al, 2009;Rattan et al, 2005;Smith et al, 1996) and pathogens (e.g., Mutengu et al, 2007;Palese et al, 2009;Pedrero and Alarcón, 2009) in wastewater and their possible effects on soil and plants as well as human health. Some studies have investigated some persistent organic contaminants such as polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) in wastewater irrigated soils (e.g., Al Nasir and Batarseh, 2008;Chen et al, 2005;Sun et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Distribution and accumulation of endocrine-disrupting chemicals and pharmaceuticals in wastewater irrigated soils in Hebei, China

Chen

Ying

Kong

et al. 2011

Environmental Pollution

222

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Section: Introductionmentioning

confidence: 99%

Distribution and accumulation of endocrine-disrupting chemicals and pharmaceuticals in wastewater irrigated soils in Hebei, China

Chen

Ying

Kong

et al. 2011

Environmental Pollution

222

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“…Salinity is an important factor in cases where stakeholders, such as the collaborating winery in this study, wish to utilize wastewater for irrigation. 27,28 The wastewaters in the present study were highly variable across different parts of the crush season with sodium concentrations varying from 97 to over 400 mg/L. Without substantial dilution, these concentrations generally exceed acceptable limits for fruit crop irrigation.…”

Section: Discussionmentioning

confidence: 99%

Algal–bacterial synergy in treatment of winery wastewater

et al. 2018

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There is significant potential for employing algae in tertiary wastewater treatment, however, little is known about the contribution of algae-bacteria synergy toward treatment performance. This study demonstrates potential synergy in the treatment of three winery wastewater samples. Two strains of green algae, Auxenochlorella protothecoides and Chlorella sorokiniana were tested and each removed > 90% of nitrogen, > 50% of phosphate, and 100% of acetic acid in the wastewater. Both algae strains grew significantly faster on wastewaters compared to growth on minimal media. Organic carbon in the wastewater apparently played a limited role in algal growth enhancement. When cultured on sterile-filtered wastewater, A. protothecoides increased soluble COD loadings in two of the three wastewaters and C. sorokiniana secreted an insoluble film. Culturing algae with the native wastewater microbial community negated the secretion of algal photosynthate, allowing for simultaneous reductions in COD and nutrient concentrations. Both algae species stimulated bacterial growth in a strain-specific way, suggesting unique responses to algal photosynthate. Cofactor auxotrophy for thiamine, cobalamin, and biotin is widespread among algae and these cofactors are typically obtained from bacteria. Sequencing the wastewater microbial community revealed bacteria capable of synthesizing all three cofactors while liquid chromatography with mass spectrometry (LCMS) and bio-assays revealed the presence of thiamine metabolites in the wastewaters. These cofactors likely increased algal growth rates, particularly for A. protothecoides, which cannot synthesize thiamine de-novo but can salvage it from degradation products. Collectively, these results demonstrate that bacteria and algae provided synergistic growth benefits, potentially contributing to higher levels of wastewater treatment than either organism type alone.

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“…Moreover, the ground tezontle rock used as the media in the CWs has demonstrated a high capacity for total dissolved solid removal in previous studies [42]. The final values in the three effluents averaged less than 1.5 dS/m, which is considered as the threshold value from which a reduction in crop yield potential due to salinity, can be expected in salt-sensitive species [43,44]. …”

Section: Electrical Conductivity (Ec)mentioning

confidence: 99%

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

Zurita¹,

White²

2015

Water Treatment in Developed and Developing Nations

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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.

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Effects of treated wastewater irrigation on lemon trees

Cited by 103 publications

References 11 publications

Distribution and accumulation of endocrine-disrupting chemicals and pharmaceuticals in wastewater irrigated soils in Hebei, China

Distribution and accumulation of endocrine-disrupting chemicals and pharmaceuticals in wastewater irrigated soils in Hebei, China

Algal–bacterial synergy in treatment of winery wastewater

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

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