Domestic wastewaters reuse reclaimed by an improved horizontal subsurface-flow constructed wetland: A case study in the southeast of Spain

Andreo-Martínez, Pedro; García-Martínez, Nuria; Quesada-Medina, Joaquín; Almela, L.

doi:10.1016/j.biortech.2017.02.123

Cited by 57 publications

(37 citation statements)

References 43 publications

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“…Our results were in line with previous studies performed by Møller et al [35] and Christensen et al [3], who reported mean value around 21.0 dS m −1 . However, some studies have indicated that physical separation of the solid and liquid fraction from the raw pig slurry could slightly reduce the EC due to chemical precipitation of salts in the solid phase [13,36].…”

Section: Microbial Parametersmentioning

confidence: 99%

Efficiency of an Integrated Purification System for Pig Slurry Treatment under Mediterranean Climate

et al. 2020

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The intensification of pig production is considered a risky activity for the environment when the generated pig slurry is not adequately treated. In addition, intensive agriculture practices where pig slurry is applied to the cropland could cause nitrate leaching, salinization, and soil pollution (heavy metals and pathogens), thus the development of an eco-friendly system for pig slurry treatment is essential to avoid undesirable environmental impacts. The main objective of this study was to assess the efficiency of an integrated purification system (IPS) for treating pig slurry. The system included a pretreatment module (raw pig slurry tank, phase separator, aeration tank, and settlement tank), constructed wetlands (CWs) that included an unplanted cell and a planted cell, and a storage pond (SP). Pig slurry samples from the pretreatment modules, CWs, and SP were collected in triplicate and physic-chemical and microbial analyses were performed. Results showed that the pretreatment modules decreased the total suspended solids (TSS), total nitrogen (TN), and total phosphorus (TP) concentrations in the liquid fraction. Higher total nitrogen removal was reported in the planted cell, which decreased from 4.0 g L−1 to 1.9 g L−1 in the inflow and outflow, respectively. Total efficiencies over 85% were found in the planted and unplanted cells for TSS, Kjeldahl nitrogen (KN), chemical oxygen demand (COD), and TP. Microbial parameters were eliminated after the treatment in the planted cell. Therefore, the results indicated that filtration (pretreatment), purification (constructed wetland), and bioremediation (storage pond) constituted an appropriate IPS for treating pig slurry.

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Section: Microbial Parametersmentioning

confidence: 99%

Efficiency of an Integrated Purification System for Pig Slurry Treatment under Mediterranean Climate

et al. 2020

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“…The most common engineered systems are the so-called constructed wetlands. They are a cost-effective, extensive, efficient and eco-friendly wastewater treatment technology that has been growing over the last few decades [73].…”

Section: Phytodepurationmentioning

confidence: 99%

Integral Management of Irrigation Water in Intensive Horticultural Systems of Almería

et al. 2017

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Abstract:The development of intensive horticulture in Almería, with a huge increase in greenhouse surface area, is related to three essential factors: climatic characteristics, groundwater use and mulching sandy soil. The purpose of the present paper is to draw a picture of the integral management of water irrigation in the intensive horticultural systems in the region, by identifying the most significant water resource contributions and alternative water resources. Results indicate that the use of groundwater for the irrigation of horticultural crops in the greenhouses presents a high degree of overexploitation of the aquifers, but due to the continuous search for alternative water resources, such as desalinated and reclaimed water, as well as in-depth knowledge of the integral management of water irrigation through automated fertigation and localized irrigation systems, the current status of the water resources could be sustainable. Moreover, being conscious of the pollution generated by agricultural leachates, the horticultural system of Almería is implementing complementary sustainable systems such as recirculation, cascade cropping systems and phytodepuration for the reuse of the leachate. Considering all these factors, it can be concluded that the intensive horticultural system is on the right path towards respecting the environment and being sustainable in terms of water use.

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“…The main possible reason can be that lower air temperatures in colder environment may restrain wetland plant growth and microbial activity, which can decrease NH4 + -N removal (Saeed and Sun, 2012;Jia et al, 2014;Andreo-Martínez, et al, 2017). Moreover, the release of nutrients from decomposing wetland vegetation, which is inevitable due to plant senescence, should be noted in CW wastewater treatments (Wu et al, 2015b).…”

Section: Ammonium Removalmentioning

confidence: 99%

Secondary effluent purification by a large-scale multi-stage surface-flow constructed wetland: A case study in northern China

Zhang

Guo

et al. 2018

Bioresource Technology

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Assessment of treatment performance in the large-scale constructed wetland (CW) for secondary effluent purification remains limited. The aim of this case study was to therefore to investigate the long-term treatment capacity of organics and ammonium pollutants in a large-scale multi-stage surface-flow (SF) CW fed with secondary effluents from the wastewater treatment plants (WWTPs) in northern China. The results for two-and-half-year study period indicated that the water quality parameters including chemical oxygen demand (COD) and ammonium (NH-N) met the Chinese Grade III of Environmental Quality Standards. The mass reductions of COD and NH-N were 53% (4032 kg ha y) and 72% (511 kg ha y), respectively. However, there was a significant positive correlation between influent loads and treatment performance. The optimal loading of 2.5 g m d for COD and 0.3 g m d for NH-N could be recommended for designing the sustainable large-scale multi-stage SF CW wastewater treatments.

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Domestic wastewaters reuse reclaimed by an improved horizontal subsurface-flow constructed wetland: A case study in the southeast of Spain

Cited by 57 publications

References 43 publications

Efficiency of an Integrated Purification System for Pig Slurry Treatment under Mediterranean Climate

Efficiency of an Integrated Purification System for Pig Slurry Treatment under Mediterranean Climate

Integral Management of Irrigation Water in Intensive Horticultural Systems of Almería

Secondary effluent purification by a large-scale multi-stage surface-flow constructed wetland: A case study in northern China

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