Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/42389
Title: Zero discharge: Pilot project for biodegradation of cattle effluent by pyroclastic “lapilli” treatment for fodder irrigation
Authors: Mendoza-Grimón, V. 
Fernández-Vera, J. R. 
Hernández-Moreno, J. M.
Hernández-Brito, I.
Palacios-Diaz, M. P. 
UNESCO Clasification: 2506 Geología
Keywords: Vertical flow
Livestock effluent
Filtration system
Zero discharge
Nutrients, et al
Issue Date: 2019
Publisher: 0301-4797
Journal: Journal of Environmental Management 
Abstract: Livestock effluents are a nutrient supply that is beneficial for crops, so their use is essential to guarantee the sustainability of the global management of farms. Zero discharge cattle effluent management to irrigate fodder crops is a mitigation option, so it is considered a key factor for adaptation to climate change. This paper presents the result of an “on site” pilot scale (three-stage, vertical flow filtration system using lapilli). This is a low-cost solution in terms of finance and energy, which does not require the addition of chemicals, to treat a cattle effluent. The effluent's quality obtained allowed it to be injected in a drip system with low risks of obstruction. And the pilot system allowed to obtain elimination values for the main parameters of effluent's quality (TSS and COD, 98% and 80% respectively) similar or greater than the ones obtained in other treatments of low cost and energy, and gives values contemplated in reclaimed water reuse guidelines of many countries. Furthermore, elimination rate for the BOD5 obtained 35 mgL−1 in treated effluent. High removal rates were obtained for N, P, K, Cu, Fe and Mn, medium for Ca, Mg and Zn and low for B and Na. These shows that the pilot system and fodder crop combination provide an optimal solution to small farms, controlling sanitary risks. The tested flow allows the use of this system by conventional small farms, which represented 94% of total cow farms in Canary Islands.
URI: http://hdl.handle.net/10553/42389
ISSN: 0301-4797
DOI: 10.1016/j.jenvman.2018.09.050
Source: Journal of Environmental Management[ISSN 0301-4797],v. 231, p. 345-351
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