Performance of Filters Composed of Banana Stalk in Swine Wastewater Treatment

Abstract

Using organic filters produced in local communities with low financial cost can reduce the environmental impacts caused by the disposal of untreated wastewater into receiving water bodies. In this study, the objective was to evaluate the efficiency of the filtration of swine wastewater (SWW) using banana stalk as an alternative material in an organic filter. SWW was applied to the organic filter and the filtered volume was converted into pore volume. Analyses of total solids, turbidity, color, total phosphorus, and total nitrogen were performed in the filter feed solution and effluent to evaluate treatment efficiency. Regression analyses were used to obtain equations in the estimation of the filtration performance in removing these variables from wastewater, with pore volume as an independent variable. The banana stalk filter did not remove total solids and color from the feed solution applied. Removal of 10–50% of SWW turbidity were obtained by the banana stalk. Banana stalk was highly efficient in removing nitrogen and phosphorus from SWW, reaching mean removals of 67% and 62%, respectively. In general, a banana stalk filter can be considered a promising alternative in the primary treatment of SWW.

Use of anaerobic filters filled with waste from the ceramics industry in swine wastewater treatment

“…The removal of turbidity from wastewater is of paramount importance, since this water quality parameter is related to the presence of suspended solids (VON SPERLING, 2005). If the effluent is released without treatment in water bodies, the presence of suspended solids can reduce the penetration of light and impair photosynthesis by algae and, consequently, the production of oxygen in the water body (NANDORF et al, 2021). Thus, it appears that the anaerobic filter filled with ceramic waste removed turbidity and total solids with similar efficiency (Figure 4C), between 45% and 75%.…”

“…If the effluent is to be released into water bodies, the removal of N-total and P-total from swine wastewater becomes essential, since they are the elements that contribute the most to the eutrophication process, impacting on the environment in several ways (NANDORF et al, 2021). According to Figure 4D, nitrogen removal ranged between 45% and 55% over 120 days of monitoring.…”

Tópicos em Agroecologia, Volume 3

“…A remoção da turbidez em águas residuárias é de suma importância, uma vez que este parâmetro de qualidade de água está relacionado com a presença de sólidos em suspensão (VON SPERLING, 2005). Caso o efluente seja lançado sem tratamento em corpos hídricos, a presença de sólidos suspensos pode reduzir a penetração da luz e prejudicar a fotossíntese pelas algas e consequentemente a produção de oxigênio no corpo hídrico (NANDORF et al, 2021). Assim, de maneira semelhante à variável cor, verifica-se que, durante o período de monitoramento, os filtros anaeróbios preenchidos com resíduo de cerâmica foram eficientes na remoção de turbidez (Figura 3B), alcançando valores em torno de 79; 67 e 60% aos 15, 30 e 45 dias, respectivamente.…”

“…Caso o efluente seja lançado em corpos hídricos, a remoção de N-total e P-total de águas residuárias da despolpa do café torna-se fundamental, já que são os elementos que mais contribuem para o processo de eutrofização, causando diversos impactos ambientais (NANDORF et al, 2021). De acordo com a Figura 3C, verifica-se remoções de fósforo total entre 40 a 59%, ao longo de 45 dias de monitoramento.…”

Mathematical Models for Estimating Methane Production in Covered Lagoon Biodigesters Treating Pig Manure

“…Pig farming is an activity of paramount importance for the economic and social development of Brazil, generating employment and income (Nandorf et al, 2021). This activity generates a high volume of effluents, which can be used in energy generation through anaerobic digestion (Freitas et al, 2019;Ramírez-Islas et al, 2020).…”