Non-pressure compensating emitters using treated sewage effluent for irrigation

ABSTRACT: This study aimed to evaluate the obstruction of non-pressure compensating emitters using treated sewage effluent (TSE) for irrigation. A drip irrigation system with six models of emitters (encoded) was installed in level field conditions. TSE coming from a sewage treatment station was used as irrigation water after being filtered through a disc filter (120 mesh). Seven flow rate evaluations of drippers operating at 100kPa were performed (0, 100, 200, 300, 400, 500 and 600h of operation). The experimental design was randomized in a 6×7 factorial arrangement (6 models and 7 times), with four repetitions, and Tukey’s test was used to compare means. Relative flow rate (Qr), the flow rate coefficient of variation (CVQ) and degree of clogging (GE) were determined. There was a reduction in flow rate in five dripper models, which are susceptible to clogging. The model with rated flow stood out against the others, showing a Qr of 100.52%, CVQ of 2.76% and GE of 0.49%. The use of TSE changed the Qr of the drippers after 600h of operation.

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Performance of pressure-compensating emitters using treated sewage effluent for irrigation

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v20n10p869-873 ◽

2016 ◽

Vol 20 (10) ◽

pp. 869-873

Author(s):

João A. Fischer Filho ◽

Vinicius M. R. de Oliveira ◽

Alexandre B. Dalri ◽

José R. Zanini

Keyword(s):

Flow Rate ◽

Rate Coefficient ◽

Irrigation System ◽

Sewage Treatment ◽

Sewage Effluent ◽

Tukey Test ◽

Relative Flow Rate ◽

Flow Rate Coefficient ◽

Treated Sewage ◽

Treated Sewage Effluent

ABSTRACT This study aimed to evaluate the flow variation of pressure-compensating emitters using treated sewage effluent (TSE). A drip irrigation system with four types of pressure-compensating emitters (G1 - Naan Dan Jain Model Top Drip, G2 - Naan Dan Jain Model Naan PC, G3 - Drip-Plan, G4 - Naan Dan Jain Model Naan Amnon) was installed with TSE from the sewage treatment station, filtered through a disc filter (120 mesh). Seven evaluations of flow rate of the drippers were performed (0, 100, 200, 300, 400, 500 and 600 h of operation) operating at 100 kPa. The experimental design was completely randomized in a 4 x 7 factorial arrangement (4 models and 7 times) with four replicates and Tukey test to compare the means. The relative flow rate (Qr), flow rate coefficient of variation (CVQ) and degree of clogging (DC) were determined. It was found that the models of emitters were not much susceptible to clogging during the operation of the system. The G4 model showed better performance compared with the others, presenting mean Qr of 99.92%, CVQ of 2.69% and DC of 1.19% at the end of the experiment. The results revealed that emitters are affected by the time of use of TSE.

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Performance of drippers in two filtering systems using sewage treatment effluent

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v21n6p363-368 ◽

2017 ◽

Vol 21 (6) ◽

pp. 363-368 ◽

Cited By ~ 1

Author(s):

Alexandre B. Dalri ◽

Gilmar O. Santos ◽

Geffson de F. Dantas ◽

Rogério T. de Faria ◽

José R. Zanini ◽

...

Keyword(s):

Fresh Water ◽

Rate Coefficient ◽

Sewage Treatment ◽

Treatment Plant ◽

Sewage Effluent ◽

Flow Rate Coefficient ◽

Treated Sewage ◽

Flat Type ◽

Lateral Lines ◽

Treated Sewage Effluent

ABSTRACT The objective of this study was to evaluate the performance of three models of drippers using treated sewage effluent, pure and diluted, and two types of filters, screen and disc. The treated sewage effluent used in the experiment was collected from the city’s treatment plant. The experiment included 12 lateral lines with three types of emitters to apply pure (100%) and diluted (50%) effluent filtered by screen and disc filters. The combination of those factors set the treatments: T1 (50% effluent diluted in fresh water filtered by a screen filter); T2 (50% effluent diluted in fresh water filtered by a disc filter); T3 (pure effluent filtered by a screen filter); T4 (pure effluent filtered by a disc filter). The results showed that the flat type emitter is less sensitive to clogging, the disc filter is the most suitable to prevent clogging and the use of pure or diluted sewage effluent increases the drippers’ flow rate coefficient of variation.

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Evaluating the periphyton as a bioreactor for removal of nutrients in a shallow hypereutrophic reservoir

Acta Limnologica Brasiliensia ◽

10.1590/s2179-975x8920 ◽

2021 ◽

Vol 33 ◽

Author(s):

Suele Aparecida Mendes-Santos ◽

Carla Ferragut

Keyword(s):

Sewage Treatment ◽

Nutrient Retention ◽

Artificial Substrate ◽

Nutrient Concentrations ◽

P Availability ◽

Sewage Effluent ◽

Reservoir Water ◽

Treated Sewage ◽

Treated Sewage Effluent ◽

The Relationship

Abstract: Aim We evaluated the periphyton on artificial substrate in the treated sewage effluent, effluent patch, inside and after the macrophyte stand in a shallow hypereutrophic reservoir. Specifically, we investigated the relationship between N and P contents and algal biomass in the periphyton with N and P availability, focusing on nutrient retention. Methods Periphyton sampling was performed at the effluent inlet, effluent path, inside, and two sites after macrophyte stand. Periphyton sampling was performed after 30 days of colonization. Abiotic variables were determined in the sewage effluent and in the reservoir water. Results Biomass and N and P contents in the periphyton were significantly different among sampling sites. The highest nutrient concentrations were found in the sampling sites with effluent. The highest periphyton chlorophyll-a were found inside and after the macrophyte stand, while N and P contents were the highest in the effluent inlet and effluent. Conclusions In conclusion, N and P contents in the periphyton were associated with N and P availability, evidencing the ability of nutrient retention of the community. Our findings suggest that periphyton on artificial substrate can as a potential tool for removing N and P from the effluent from the sewage treatment system, contributing to minimizing the nutrient load discharged in a shallow reservoir.

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REUSE OF TREATED SEWAGE EFFLUENT IN AIRPORTS: IRRIGATION OF ORNAMENTAL PLANT NURSERY

Journal of Urban and Environmental Engineering ◽

10.4090/juee.2013.v7n2.264273 ◽

2013 ◽

pp. 264-273 ◽

Cited By ~ 3

Author(s):

Eduardo de Aguiar Do Couto ◽

Paula Peixoto Assemany ◽

Maria Lúcia Calijuri ◽

Aníbal da Fonseca Santiago ◽

Luna Gripp Simões Alves

Keyword(s):

Plant Growth ◽

Sewage Treatment ◽

Ammonia Nitrogen ◽

World Health ◽

Sewage Effluent ◽

Treated Effluent ◽

Treated Sewage ◽

Plant Nursery ◽

Removal Efficiencies ◽

Treated Sewage Effluent

Airports consume significant amounts of water which can be compared to the volume consumed by mid-size cities, thus practices aimed at reducing water consumption are important and necessary. The objective of this study was to assess the reuse potential of sewage effluent produced at a mid-size international airport for nursery irrigation. The sewage treatment system consisted of a facultative pond followed by a constructed wetland, which were monitored during one hydrological year and the parameters COD, pH, solids, nitrogen, phosphorus and Escherichia coli were analyzed. Removal efficiencies of 85% and 91% were achieved for COD and solids, respectively. Removal efficiencies for ammonia nitrogen and total phosphorus were 77% and 59%, respectively. In terms of E. coli concentration, the treated effluent met the recommendations by the World Health Organization for reuse in irrigation with the advantage of providing high levels of residual nutrient. The ornamental species Impatiens walleriana was irrigated with treated sewage effluent and plant growth characteristics were evaluated. The experiment showed that reuse can enhance plant growth without significantly affecting leaf tissue and soil characteristics. This study highlighted the importance of simple technologies for sewage treatment especially in countries which still do not present great investment in sanitation and proved that effluent reuse for landscape irrigation can provide great savings of water and financial resources for airport environments.

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ATRIBUTOS QUÍMICOS DO SOLO IRRIGADO COM EFLUENTE DE ESGOTO TRATADO, FERTIRRIGAÇÃO CONVENCIONAL E ÁGUA DE POÇO1

Irriga ◽

10.15809/irriga.2017v22n1p18-33 ◽

2017 ◽

Vol 22 (1) ◽

pp. 18-33 ◽

Cited By ~ 2

Author(s):

Delvio Sandri ◽

Rodrigo De Rezende Borges Rosa

Keyword(s):

Soil Chemistry ◽

Irrigation System ◽

Chemical Properties ◽

Statistical Design ◽

Superficial Layer ◽

Sewage Effluent ◽

Soil Layers ◽

Treated Sewage ◽

Chemical Attributes ◽

Treated Sewage Effluent

Atributos químicos do solo irrigado com efluente de esgoto tratado, fertirrigação CONVENCIONAL e água de poço1 DELVIO SANDRI2 E RODRIGO DE REZENDE BORGES ROSA3 1Parte da dissertação do segundo autor.2Faculdade de Agronomia e Medicina Veterinária, UnB, Campus Darcy Ribeiro, ICC Sul, Asa Norte, Brasília – DF, 70910-900, Brasil, email: [email protected] Consultoria & Serviços de Irrigação Ltda – ME, Rua Joaquim Neto, 62, Centro, Goiandira, GO, 75740-000, Brasil. [email protected] 1 Resumo A irrigação com efluente de esgoto tratado apresenta potencial para a irrigação de culturas agrícolas, com disponibilização de nutrientes ao solo, influenciado pela forma de aplicação. Objetivou com este trabalho investigar os atributos químicos nas camadas de solo de 0 a 0,2 m e 0,2 a 0,4 m, irrigado por gotejamento superficial (Ig) e microaspersão (Im), utilizando efluente de esgoto tratado (Eet), fertirrigação convencional (Fc) e água de poço (Ap). O experimento foi desenvolvido no período de outubro de 2009 a novembro de 2010 em área cultivada com banana, cv. Grand Naine. O delineamento estatístico foi em blocos casualizados, em arranjo fatorial 3 x 2, com quatro repetições. A irrigação por gotejamento e microaspersão influencia de maneira diferente no teor de alguns atributos químicos do solo; a maioria dos atributos químicos avaliados no solo eleva-se significativamente nos três tipos de água e nas duas camadas de solo avaliadas; os teores de sódio e de boro reduziram ou permaneceram estáveis no solo; a aplicação de Eet, por gotejamento, eleva de maneira mais acentuada os teores de fósforo, enxofre, acidez total e saturação de bases na camada de solo de 0 a 0,2 m e na microaspersão, na camada de 0,2 a 0,4 m. Palavras-chave: reúso, água residuária, química do solo. SANDRI, D.; ROSA, R. R. B.CHEMICHAL ATTRIBUTES OF A SAVANA SOIL WITH TREATED SEWAGE EFFLUENT IRRIGATION 2 ABSTRACT The irrigation with treated sewage effluent has potential for irrigation of agricultural crops, providing nutrients to the soil influenced by the irrigation system. The objective of this study was to evaluate the chemical attributes in soil layers from 0 to 0.2 m and 0.2 to 0.4 m, irrigated by surface drip (Ig) and microsprinkler (Im) using well water (Ap), treated sewage effluent (Ar) and conventional fertigation (Af). The experiment was carried out under field conditions from October 2009 to November 2010 in area cultivated with banana cv. Grand naine. The statistical design was a randomized block with factorial 3 x 2, and four replications. Drip irrigation and microsprinkler influence differently in the content of some soil chemical properties; most chemical attributes evaluated in the soil increase significantly in the three types of water and the two evaluated soil layers; Na and B content decreased or remained stable in the soil; the application of drip water increases more sharply P, S, AT and SB levels in the most superficial layer and the microsprinkler in the deepest layer. Keywords: Reuse. Fertigation. Soil chemistry.

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