Carbonized sugar cane bags as an ecological filter for clarification of sewage treatment station effluents (ETE)

• Grant number: 18/24855-9
• Support Opportunities: Regular Research Grants
• Duration: March 01, 2019 - December 31, 2021
• Field of knowledge: Interdisciplinary Subjects
• Principal Investigator: Sérgio Bispo Ramos
• Grantee: Sérgio Bispo Ramos
• Host Institution: Faculdade de Ciências Agrárias e Tecnológicas. Universidade Estadual Paulista (UNESP). Campus de Dracena. Dracena , SP, Brazil
• Associated researchers: Gustavo Do Valle Polycarpo ; Paulo Alexandre Monteiro de Figueiredo ; Vitor Corrêa de Mattos Barretto

Abstract

Brazil concentrates over 20% of its biodiversity and 12% of the world's freshwater, making it a reference for the rest of the nations. However, more than half of Brazilian municipalities do not have adequate sanitary sewage treatment systems, returning contaminated effluents to the receiving bodies, thus promoting the propagation of waterborne diseases and environmental degradation. One of the ways of disinfecting these effluents and not causing the formation of deleterious complexes to human and environmental health is that of ultraviolet technology with excellent germicidal action. However, its efficiency is compromised in the presence of high concentrations of organic materials and total suspended solids (TSS) and this problem can be avoided with the use of ecological filters. The present work has the objective of evaluating the effects of the use of carbonized sugarcane bagasse as ecological filtering material for sewage treatment plant (ETE) effluents, indicating heights and pressure exerted on the filtering modules. Three experiments will be installed in the TAS of Bairro das Antas, in Dracena (SP), an area adjacent to FCAT / UNESP, and all will have a randomized block design with six treatments and four replications. Experiment I will identify the height of the modules to be used in the filtering system: 0; 0.10; 0.20; 0.30; 0.40 and 0.50 m. Experiment II will study the pressure to be exerted on the modules with the filter and will be used as treatments 0.000; 0.029; 0.057; 0.114; 0.171 and 0.228 Kgf cm-2, corresponding respectively to 0.00; 5.00; 10.00; 20.00; 30.00 and 40.00 Kgf by the area of the PVC pipe, on the carbonized bagasse. Experiment III will evaluate the number of modules to be used in the filtering system with the sugarcane bagasse, applying treatments 0; 1; 2; 3; 4 and 5 modules, with the height and pressure identified in Experiments I and II, respectively. The variables evaluated daily will be turbidity, BOD, color, pH, iron, nitrate, N-ammoniacal nitrite, phosphorus, sulfate and zinc. The results will be submitted to analysis of variance by the F test and regression and correlation studies (P <0.05). (AU)