O presente trabalho foi desenvolvido em uma indústria de alimentos do segmento de candies e teve como objetivo caracterizar as condições físico-químicas e microbiológicas da água de três linhas de produção para avaliar o potencial reúso para fins não potáveis, empregando-a na lavagem de maquinários, pisos, banheiros e na rega de jardins. A metodologia consistiu na medição do volume e vazão de água gerada no processo de limpeza em cada uma das linhas durante o processo produtivo. Foram coletadas amostras dos efluentes gerados durante as limpezas internas das máquinas, analisando a concentração de sólidos solúveis (ºBx), demanda química de oxigênio (DQO) e potencial hidrogeniônico (pH). Seis amostras foram encaminhadas para as seguintes análises microbiológicas: contagem total de bactérias mesófilas aeróbias, bolores e leveduras, Bacillus cereus, Escherichia coli, Salmonella spp. e Staphylococcus coagulase positiva. As três linhas de produção geram uma média de 5.968 litros de água/dia, DQO média de 60.809 mg L-1 e sólidos solúveis médio igual a 5,0 °Bx. Não houve crescimento microbiológico para contagem total de bactérias mesófilas aeróbias na primeira análise (00h00), mas 24 h depois, houve crescimento de 5 logs nas linhas um e três e na linha dois, 4 logs. Para bolores e leveduras, houve contaminação inicial com aumento de 2 logs na linha um, 4 logs na linha dois e 3 logs na linha três, 24 h após coleta. Conclui-se que essa água é viável para reúso não potável em um período inferior a 24 h após seu primeiro uso.
This research aimed to evaluate the efficiency of the treatment of manure from three livestock production units (cattle, swine, and poultry), through composting with mechanized turning and incorporation of natural substrate (wood sawdust) in rural properties in the municipalities of Farroupilha, Relvado, and Caxias do Sul, State of Rio Grande do Sul, Brazil. The experimental design consisted of nine treatments, three for each type of manure. These were classified as: T1 (cattle manure plus wood sawdust), T2 (swine manure plus wood sawdust), and T3 (poultry manure plus wood sawdust). The process involved the daily turning of the windrows by a mechanized process and sampling was carried out in triplicate at 60, 120, and 180 days of composting, between the months of July 2018 and July 2019. After each sampling, samples were properly stored and sent to the Chemistry Laboratory of the University of Santa Cruz do Sul for analysis of the following variables: Calcium (Ca), Cation Exchange Capacity (CTC), Phosphorus (P), Magnesium (Mg), Nitrogen (N), pH, and Potassium (K). Temperature measurements were made on the spot every 15 days. At the end of the experiment, all treatments reached the standards of humidity, temperature, pH, and NPK, established in Normative Instruction No. 25/200 for organic fertilizers, from the Ministry of Agriculture and Livestock of Brazil. Thus, the results demonstrated the efficiency of the mechanized composting process for the treatment of bovine, swine, and poultry manure, producing a high-quality organic compost.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.