Reuso de águas residárias no processo de fabricação de tintas base água - subsídios de produção mais limpa (P+L)

Abstract

This study aimed to evaluate the potentiality of the reuse of wastewater in the manufacturing process of waterbone paints of an industry of the State of Pernambuco, Brazil from the perspective of cleaner production (P + L), identifying opportunities for improvement and proposing ecoefficient solutions. To this end, it was necessary to understand through the literature review what is ink and how the production process and their waste. The methodology was based on process data collection and wastewater samples setup process, physico-chemical analysis of the solid content and analysis of microbiological contamination of the samples from the tank washing system, important factors for the reuse process. Also took the statistical analysis of data and bibliographic research and the development of a mind map that has guided improvement ideas the reuse process. As a result, the drafting of a mind map, description of the whole system of washing and reuse of process wastewater, a proposal for standardization in the operating instructions for the washing of hermetic tanks and filling tanks, identification of barriers to waterwaste and reuse set ten proposals for eco-efficient solutions for optimization of wastewater reuse in the production process with and without costs among them: standardization of the washing system, proposals for three operating instructions, recommendation for improvement projects with the A3 metodology of Lean Manufacturing, coating of the inner walls of the tanks with liquid glass to reduce the adherence of the paint, use of sprayball, use of cuba self-cleaning, use of closed system of reuse of wastewater, automated car wash don't wash the tanks , installation of a decanter at ETE, reuse of water of the post-treatment ETE with polishing by membrane filtration and ozonização for various uses within and outside the production process. It is concluded that it is possible, and a reality, the reuse of wastewater in the manufacturing process of waterbone paints by minimizing the generation of waste end-of-pipe with the challenge of ensuring the quality of the final product