Applicability of tannin-based coagulants in water treatment plants

Authors

DOI:

https://doi.org/10.6008/CBPC2179-6858.2018.007.0011

Keywords:

Organic coagulants, Inorganic coagulants, Sustainable treatment

Abstract

The establishment of practices that prioritize aspects related to the environment and public health has questioned the application of aluminum and iron salts as coagulants in water treatment plants, since such products have in their composition elements that can compromise the equilibrium of the ecosystems, and they are responsible for deleterious health effects. This study evaluated the removal of suspended and colloidal solids from the water, in terms of turbidity and true color, of a fountainhead located in the city of Campina Grande – Paraiba. Coagulation / settling / flocculation assays were performed with Jar test, using organic coagulants, based on tannin (Tanfloc SG and Tanfloc SL), and inorganic, Ferric Chloride and Aluminum Sulphate. Were used different dosages and sedimentation velocities, in addition, was verified the influence of these factors on the parameters obtained for the decanted water. The results of the tests indicated a better performance of the organic coagulant Tanfloc SL, and the statistical methods indicated independence of the sedimentation rate by the organic coagulants and dependence for the ones of inorganic nature. Therefore, the use of organic coagulant Tanfloc SL is a feasible and sustainable alternative for water treatment plants.

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Author Biographies

Thiago Cabral Nepomuceno, Federal University of Campina Grande

Graduated in Sanitary and Environmental Engineering from the State University of Paraíba. Master in Civil and Environmental Engineering by the Graduate Program in Civil and Environmental Engineering (PPGECA) of the Federal University of Campina Grande  and doctorate in the respective Program. Participation in research aimed at the purification of bodies of water contaminated by organic compounds, as well as studies associated with water quality in public supply systems. Development of researches related to the application of alternative products for the treatment of water for public supply, evaluating their respective performances and influences in the units of this system. He also has academic experience in Fluid Mechanics and Hydraulics. Currently works in the elaboration of mathematical models for simulation and computational optimization of Water Resources Systems.

Weruska Brasileiro Ferreira, Paraiba State University

Has a bachelor's degree in chemical Engineering from the Universidade Federal da Paraíba (1995), master's degree in Chemical Engineering from the Federal University of Campina Grande (2008) and phd in Chemical Engineering from the Federal University of Campina Grande (2012). Currently she is a professor effective at the State University of Paraíba, Department of Sanitary and Environmental Engineering. Acting in the following areas of knowledge: quality of natural water, treatment of water for human consumption and industrial), desalination of water, wastewater treatment, Bioremediation, environmental sanitation and Biotechnology of microalgae, especially in the generation of biofuels.

Wiliam de Paiva, Universidade Estadual da Paraíba

Has a Technical Degree in Electronics from the Redemptorist Technical School (1987), graduated in Full Degree in Mathematics from the State University of Paraíba (1993), graduation in Civil Engineering from the Federal University of Paraíba (1996), master's degree in Civil Engineering from the Federal University of Paraíba (2000). PhD in Geotechnics, Federal University of Pernambuco (2009). Specialization in Projects, Execution and Control of Structures and Foundations by the Institute of Graduate and Graduation (2016), and is a professor at the State University of Paraíba. He has experience in Civil Engineering, working mainly in the following subjects: foundations, expansive soils, field instrumentation, Geostatistics and Statistics applied to Civil Engineering, Urban Solid Waste (RSU) and Civil Construction Waste (RCC). Minister of minicourses and lectures on Entrepreneurship.

Tarciana Ramos Diniz, Universidade Estadual da Paraíba

Undergraduate student (a) in Environmental and Sanitary Engineering at Paraiba State University (UEPB)

Whelton Brito dos Santos, Federal University of Campina Grande

Sanitary and Environmental Engineer from the State University of Paraíba (2014), Master in Civil and Environmental Engineering with emphasis in Water Resources Engineering and Environmental Sanitation by the Federal University of Campina Grande (2017). Doctorate student in the Graduate Program in Natural Resources at the Federal University of Campina Grande.

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Published

2018-09-24

Issue

Vol. 9 No. 7 (2018): Revista Ibero-Americana de Ciências Ambientais - Ago, Set 2018

Section

Engenharia Sanitária

License

The CBPC - Companhia Brasileira de Produção Científica (Brazil CNPJ: 11.221.422/0001-03) the material rights of the published works. The rights relate to the publication of the work anywhere in the world, including rights to renewals, expansions and dissemination of the contribution, as well as other subsidiary rights. All electronically published works may subsequently be published in printed collections under the coordination of this company and / or its partners. The authors preserve the copyright, but are not allowed to publish the contribution in another medium, printed or digital, in Portuguese or in translation.

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