Uso de agentes coagulantes na eficiência do tratamento de efluente de laticínios

• Autor(a) principal: Santana, Daniel Amorim de
• Data de Publicação: 2020
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UFS
• Texto Completo: https://ri.ufs.br/jspui/handle/riufs/15626
• topic: Agroindústria; Inovação tecnológica; Indústria de laticínios; Mandacaru; Coagulantes químicos; Tratamento de efluentes; Agroindustry; Tecnologic innovation; CIENCIAS AGRARIAS

The dairy industries generate large amounts of effluents with very similar characteristics. In this sense, this research project tested the use of chemical and natural coagulants in the treatment of this type of industrial effluent, with the objective of obtaining good water for reuse, for be used to wash floors or in green areas for grazing animals, meeting the parameters required by CONAMA Resolution 430/2011. The chemical coagulants used were aluminum sulfate (Al2 (SO4)3), and aluminum polychloride Aln (OH) mCl3n-m, and as a natural coagulant the mandacaru salt extract, which has an active ingredient as an active ingredient. viscous complex that acts as a natural polymer capable of agglutinating the particles present in the liquid medium. The results showed an excellent removal of BOD, COD and an excellent reduction of turbidity, on the part of the natural coagulant The saline extract of mandacaru (Cereus Jamacaru P.), based on 15% calcium chloride, where in the best coagulant treatments above was the treatment: 1 (one) of the rapid mixture for the salt extract, where it showed an efficiency in the removal of organic matter mg.O2 / L of 86.10%, where the resolution 430/2011 of CONAMA establishes efficiency of 60%, consequently showed good results in the removal of COD, having an efficiency of 86% and Turbidity 97.11%, emphasizing that the initial turbidity of the dairy effluent in question was 1,180 NTU. Already the aluminum sulfate, also presented good results being the treatment 3 (three) of the fast mixture, which offered the best result for the coagulant in question. On the other hand, Aluminum Polychloride, Aln (OH) mCl3n-m, showed a maximum efficiency of 59.72% in the removal of organic matter, where it did not have good results when compared with the current legislation. However, the aforementioned coagulants showed good efficiency in the treatment mentioned above. However, the physical-chemical treatment proved to be efficient when used with a suitable coagulant.