Reuso de efluentes domésticos na irrigação por gotejamento do tomareiro

Este trabalho teve como objetivo avaliar a qualidade microbiológica do feijão caupi (Vigna unguiculata) quando submetido a diferentes níveis de reposição hídrica em função da evapotranspiração da cultura (ETc) com três concentrações de efluente doméstico tratado. As plantas foram cultivadas em vasos dispostos em Delineamento de Blocos Casualizados (DBC) em esquema fatorial 3 x 4. A cultura foi submetida a quatro níveis de reposição hídrica (75, 100, 125 e 150% da ETc) com três concentrações de efluente doméstico tratado (0, 50 e 100%), com quatro repetições. Para a concentração correspondente a 0% foi utilizada água de abastecimento urbano, enquanto que nas concentrações de 50 e 100%, o efluente foi coletado da Estação de Tratamento de Esgoto da Universidade Federal de Sergipe. Foram avaliados: coliformes termotolerantes (NMP g-1) e Salmonella sp. Os resultados das amostras foram submetidos à análise de acordo com os parâmetros recomendados pela Resolução n° 12 de 02/01/2001 da Agência Nacional de Vigilância Sanitária - ANVISA. Os resultados demonstraram a ausência de Samonella, bem como de microrganismos indicadores de contaminação fecal nos grãos de feijão caupi, independente do tratamento utilizado.

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“…Segundo Queiroz et al (2015), a aplicação do efluente de lagoa de estabilização não causou contaminação microbiológica dos frutos de tomate.…”

Section: Resultsunclassified

Análise microbiológica do feijão caupi submetido a diferentes níveis de reposição hídrica com efluente doméstico tratado

Silva

Filho

Nunes

et al. 2020

RSD

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“…The proposed range is compatible with the expected final concentrations found in the literature for these systems. Evaluations of the efficiency of sewage treatment systems in several Brazilian states confirm this range, with average values of 25 to 150 mg L -1 (GONÇALVES, et al, 2015;QUEIROZ;QUEIROZ;ARAGÃO, 2015). Regarding the agricultural application, effluents with concentrations above 65 mg L -1 were applied as fertigation to crops in the semiarid region and did not interfere with their growth (RIBEIRO et al, 2012;SALGADO et al, 2018).…”

Section: Domesticmentioning

confidence: 94%

“…Several studies present non-quantifiable values of metals. Andrade Filho et al (2013), Oliveira et al (2014), Queiroz, Queiroz andAragão (2015), and Salgado et al (2018) evaluated copper, iron, manganese, and zinc contents in sewages used for irrigation in the Brazilian semiarid region and found 0.02 to 0.45 mg L -1 (Cu), 0.18 to 2.20 mg L -1 (Fe), 0.07 to 0.15 mg L -1 (Mn), and 0.05 to 1.25 mg L -1 (Zn), with no effect on the development of the crops.…”

Section: Domesticmentioning

confidence: 99%

“…Acid water with pH below 6 directly affects irrigated crops and soil, with increasing effect in medium and long terms (SILVA et al, 2018). The pH values commonly found for domestic sewage are neutral to slightly alkaline, offering no risks, as evidenced by Queiroz, Queiroz, Aragão (2015); Silva et al (2015), and Rolim et al (2016), who found pHs of 6.50 to 8.40. Regarding the nutrients, the phosphorus contents found in sewage treatment systems for subsequent agricultural use were 3.00 to 12.80 mg L -1 ; these contents are relevant for plant growth (FREITAS et al, 2012;QUEIROZ;QUEIROZ;ARAGÃO, 2015).…”

Section: Domesticmentioning

confidence: 99%

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Wastewater Use in Agriculture: Analytical Limits of Sewage for Impact Control in Brazil

et al. 2019

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Water deficit is a current problem of global relevance. This is a problem in Brazil, especially in the Semiarid region, which undergoes severe droughts for much of the year. This requires the search for alternatives, such as the planned wastewater use, which is a successful alternative in developed countries that is applied for various purposes, including agriculture. However, despite the increasing growth of agriculture in Brazil, there are no established control and monitoring policies to minimize its impacts on the environment and human health. The country does not have specific legislation that defines wastewater quality parameters for domestic sewage. The objective of this work was to compile international guidelines and legislations that address this issue and compare them with the national normative resolutions for quality of wastewater and its different uses. The most relevant and locally applicable parameters described in these documents were listed, and the reference limits were defined by comparing them with those found in the scientific literature applied to the Brazilian context. This compilation represents the first step towards the incorporation of regulations for water reuse, having the Brazilian Semiarid region as a first test field, but with expandable application to different regions of the country.

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“…Reuse of water for irrigation purposes can benefit crops in terms of nutrient supply, reducing the need for synthetic fertilisers (2). Queiroz et al (2015) observed that, despite several benefits, unrestricted irrigation with urban effluent may imply health and environmental risks. Besides supplying organic matter and nutrients to the soil, it also increases salt contents, which, depending on the concentration, can compromise crop quality and reduce soil osmotic potential, thus limiting productive capacity.…”

Section: Introductionmentioning

confidence: 99%

Reuse of treated domestic sewage for biquinho pepper cultivation

et al. 2021

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This study aimed to evaluate the reuse of treated domestic sewage in biquinho pepper (Capsicum chinense L.) cultivation under different irrigation regimes. The experiment was carried out in a greenhouse, in a randomised block design with a 3 x 4 factorial scheme, with four replications. Forty-eight pepper plants were subjected to three treated domestic sewage concentrations (0, 50, and 100%) and four irrigation depths (75, 100, 125, and 150% of the crop evapotranspiration - ETc). Data for ETc estimation were obtained from an automatic meteorological station, which was installed in the greenhouse. The results showed that irrigation depths corresponding to 125 and 150% of the ETc at a concentration of 100% treated domestic sewage resulted in higher plants. Moreover, longer fruits were obtained when plants were subjected to 100% ETc at 100% treated domestic sewage. The studied irrigation depths influenced pepper fruit total weight and yield. No treated domestic sewage concentrations significantly influenced the variables analysed. Treated domestic sewage reuse can constitute an alternative for quality water saving and for chemical fertilisation of biquinho pepper crop. Highlights: The growing of beak pepper with domestic sewage treated can bring benefits in terms of providing nutrients to the crops; Adequate levels of water replacement with domestic sewage treated may promote good crop development. The use of treated domestic sewage can be an alternative to reduce the use of better quality water and chemical fertilization in the growing of beak pepper. Reduction of environmental impact may be possible with the replacement of chemical fertilizer by domestic sewage treated in the growing of beak pepper.

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Reuso de efluentes domésticos na irrigação por gotejamento do tomareiro

Cited by 9 publications

References 11 publications

Análise microbiológica do feijão caupi submetido a diferentes níveis de reposição hídrica com efluente doméstico tratado

Análise microbiológica do feijão caupi submetido a diferentes níveis de reposição hídrica com efluente doméstico tratado

Wastewater Use in Agriculture: Analytical Limits of Sewage for Impact Control in Brazil

Reuse of treated domestic sewage for biquinho pepper cultivation

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