Open AccessEFFICIENCY ANALYSIS OF A WATER RESERVOIR ALTERNATIVE LINING
Author(s) -
Ana Carolina Corrêa Furtini,
Pedro Luiz Terra Lima,
Luiz Antônio Lima,
Michael Silveira Thebaldi,
Lucas Henrique Pedrozo Abreu,
Maísa Martins Monteiro,
Leandro Campos Pinto
Publication year - 2017
Publication title -
revista brasileira de engenharia de biossistemas
Language(s) - English
Resource type - Journals
eISSN - 2359-6724
pISSN - 1981-7061
DOI - 10.18011/bioeng2017v11n2p199-205
Subject(s) - hydraulic conductivity , calcium hydroxide , sodium hydroxide , infiltrometer , dispersant , infiltration (hvac) , effluent , mineralogy , chemistry , environmental science , environmental engineering , soil water , soil science , materials science , composite material , dispersion (optics) , physics , optics
Cost of lining reservoirs, whether for storage or water treatment, can be made it with different materials. As these structures have a relatively large surface area the investment amount can be economically unfeasible. A sustainable alternative method that can be used is the reduction of water infiltration in the soil, carried out through the use of a chemical dispersant such as Sodium Hydroxide (NaOH). Therefore, the aim of the present research was to define the lower NaOH concentration and volume to be applied in samples of a Red Latosol in the southern region of Minas Gerais state, Brazil. The samples, in triplicate, were treated with 5 NaOH concentrations (0, 5, 10, 15 and 30 g L-1) and 3 volumes per square meter application (5, 15 and 25 L m-2), submitting it to saturated hydraulic conductivity in constant head permeameters tests. The results showed that the application of different concentrations of NaOH reduced the saturated hydraulic conductivity in relation to the control treatment. The ratio of condutivity to NaOH concentration is best represented by the cubic regression y = 22.46 - 6.06x + 0.45x² - 0.01x³ (r² = 0.97). Regarding the different application rates, the difference was not significant indicating equality between the treatments analyzed. Therefore, the use of the 5 g L-1 of NaOH, applied at 5 L m-2, was economically more feasible and could therefore be a low-cost lining alternative.