Dairy farm wastewater treatment and lipid accumulation by Arthrospira platensis

2018 ◽  
Vol 128 ◽  
pp. 267-277 ◽  
Author(s):  
S. Hena ◽  
H. Znad ◽  
K.T. Heong ◽  
S. Judd
2021 ◽  
Vol 7 (2) ◽  
pp. 292-303
Author(s):  
Julius Cezar A. Galve ◽  
Marloe Baclayon Sundo ◽  
Donny Rey D. Camus ◽  
Victor Mikael N. De Padua ◽  
Richard Dean F. Morales

Agricultural and livestock farms are the major sources of freshwater pollution in rural areas in the Philippines.  Small and unregulated dairy farms operate without appropriate wastewater treatment before discharge because it is too expensive to do so. With this scenario, the emergence of the need for a sustainable and cheaper alternative for wastewater treatment gave rise to the research and development studies of the efficiency of constructed wetlands. The study aims to analyze the treatment efficiency of series type vertical subsurface flow constructed wetlands planted with Napier Grass (Pennisetum Purpureum Schumach) on University of the Philippines Los Baños (UPLB) Dairy Farm wastewater with a focus on fecal coliform concentration, electric conductivity, total dissolved solids content, nitrite and nitrate concentration and pH level. The study showed that after treatment using the vertical subsurface flow constructed wetlands, all the parameters except the fecal coliform concentration were below the standard limits set by the Department of Agriculture with average removal efficiencies of 12.94% on Electric Conductivity (EC), 12.86% on Total Dissolved Solids (TDS), 216.44% on Nitrite (NO2-N), -125.64% on Nitrate (NO3-N), and -25.64% on Fecal Coliforms (FC). With the results of the analysis, a design of series type vertical subsurface flow constructed wetland for dairy farm wastewater treatment is suggested. Doi: 10.28991/cej-2021-03091654 Full Text: PDF


Irriga ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 590-602
Author(s):  
Jonathas Batista Goncalves Silva ◽  
Mauro Aparecido Martinez ◽  
Luiz Carlos Chamhum Salomão ◽  
Paulo Roberto Cecon ◽  
Antonio Teixeira de Matos ◽  
...  

EFFECTS OF DAIRY FARM WASTEWATER USE IN CULTIVATION ON FIG TREE (FICUS CARICA L.)     JONATHAS BATISTA GONCALVES SILVA1; MAURO APARECIDO MARTINEZ2; LUIZ CARLOS CHAMHUM SALOMÃO3; PAULO ROBERTO CECON4; ANTONIO TEIXEIRA DE MATOS5 E LEONARDO DUARTE BATISTA DA SILVA6   1Departamento de Engenharia Sanitária e Ambiental, UFJF, Rua José Lourenço Kelmer, s/n,Bairro São Pedro, 36036-900, Juiz de Fora, MG, Brasil, [email protected]. 2Departamento de Engenharia Agrícola, UFV, Av. Peter Henry Rolfs, s/n, 36570-900, Viçosa, MG, Brasil, [email protected] 3Departamento de Fitotecnia, UFV, Av. Peter Henry Rolfs, s/n, 36570-900, Viçosa, MG, Brasil, [email protected] 4Departamento de Estatística, UFV, Av. Peter Henry Rolfs, s/n, 36570-900, Viçosa, MG, Brasil,[email protected]. 5Departamento de Engenharia Sanitária e Ambiental, UFMG, Avenida Presidente Antônio Carlos, 6627, Bairro Pampulha,31270-901, Belo Horizonte, MG, Brasil,[email protected] 6Departamento de Engenharia, UFRRJ, Rodovia BR 465,km 7, s/n,23890-000, Seropédica, RJ, Brasil, [email protected]     1 ABSTRACT   The purpose of this study was to evaluate the effects of dairy farm wastewater (DFW) use on fig tree growth, production, on fig health standard and on nutrient concentration in fig tree leaves. The study was developed in the Integrated Agroecological System area, in Seropédica (RJ, Brazil) between June  2011 and May  2012. The applied fertilizer formulations were: Formulation 1, 100% of nitrogen dose recommended for fig tree supplied by fertilizing with castor bean cake (CB); Formulation 2, 50% of nitrogen dose supplied by DFW application and 50% of nitrogen dose supplied by CB; Formulation 3, 75% of nitrogen dose supplied by DFW application and 25% of nitrogen dose from CB; Formulation 4, 100% of nitrogen dose supplied by DFW application.Data were submitted to analysis of variance and the averages were compared by Tukey’s test at 10% probability. The results demonstrated that branches length, number of leaves per branch, number of fruits, production and yield were lower in plants submitted to Formulation 4. Contamination of fruits by thermotolerant coliforms or Salmonellasp did not occur after DFW use as fertilizer. The results showed that the use of DFW in fig tree cultivation was sufficient to provide the nutritional needs of plants, as regards macronutrients and Fe.   Keywords: fertirrigation, environmental impact, final disposal of effluents and crop nutrition.     SILVA, J.B. G.; MARTINEZ, M. A.; SALOMÃO, L. C. C.; CECON,P. R.; MATOS, A. T.; SILVA, L. D. B. EFEITOS DO USO DE ÁGUA RESIDUÁRIA DE BOVINOCULTURANO CULTIVO DA FIGUEIRA (FICUS CARICA L.)         2 RESUMO   Objetivou-se com este trabalho avaliar os efeitos do uso da água residuária de bovinocultura de leite (ARB) no crescimento, produção, padrão fitossanitário dos frutos e na concentração de nutrientes nas folhas da figueira. As formulações de adubação aplicadas foram: Adubação 1 - 100% da dose de nitrogênio fornecida pela adubação com torta de mamona (TM); Adubação 2 - 50% da dose de nitrogênio comaplicação de ARB e 50% com TM; Adubação 3 - 75% da dose de nitrogênio com aplicação de ARB e os outros 25% da dose com TM; Adubação 4 - 100% da dose de nitrogênio com aplicação da ARB. Os resultados foram submetidos à análise de variância e as médias comparadas utilizando-se o Teste de Tukey a 10% de probabilidade. Diante dos resultados verificou-se que comprimento dos ramos, o número de folhas por ramos, o número de frutos, a produção e a produtividade foram menores nas plantas submetidas à Adubação4. Não ocorreu contaminação dos frutos por coliformes termotolerantes e Salmonella sp. Diante dos resultados concluiu-se que o uso de ARB no cultivo da figueira não proporciona deficiência nutricional às plantas no que se refere aos macronutrientes (N, Ca, Mg, K e P).   Palavras-chave: fertirrigação, impacto ambiental, disposição final de efluentes, nutrição vegetal.


2018 ◽  
Vol 264 ◽  
pp. 311-318 ◽  
Author(s):  
Junping Lv ◽  
Yang Liu ◽  
Jia Feng ◽  
Qi Liu ◽  
Fangru Nan ◽  
...  

2015 ◽  
Vol 44 (6) ◽  
pp. 1965-1973 ◽  
Author(s):  
Jeffrey D. Wood ◽  
Robert J. Gordon ◽  
Ali Madani ◽  
Glenn W. Stratton ◽  
Heather M. Bromley

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