Performance of slow sand filters in the after-treatment of effluent from Pernambuco state textile center

  • Alanna Maria do Nascimento Bezerra Centro Acadêmico do Agreste. Núcleo de Tecnologia. Universidade Federal de Pernambuco (UFPE), Avenida Marielle Franco, s/n, Km 59, CEP: 55014-900, Caruaru, PE, Brazil.
  • Marcos Henrique Gomes Ribeiro Centro de Tecnologia e Geociências. Departamento de Engenharia Civil e Ambiental. Universidade Federal de Pernambuco (UFPE), Avenida da Arquitetura, s/n, CEP: 50740-550, Recife, PE, Brazil.
  • Artur Paiva Coutinho Centro Acadêmico do Agreste. Núcleo de Tecnologia. Universidade Federal de Pernambuco (UFPE), Avenida Marielle Franco, s/n, Km 59, CEP: 55014-900, Caruaru, PE, Brazil.
  • Ana Emília Carvalho de Gusmão da Cunha Rabelo Centro de Tecnologia e Geociências. Departamento de Energia Nuclear. Universidade Federal de Pernambuco (UFPE), Avenida Luiz Freire, n° 1000, CEP: 50740-545, Recife, PE, Brazil.
  • Elizabeth Amaral Pastich Gonçalves Centro Acadêmico do Agreste. Núcleo de Tecnologia. Universidade Federal de Pernambuco (UFPE), Avenida Marielle Franco, s/n, Km 59, CEP: 55014-900, Caruaru, PE, Brazil.
DOI: https://doi.org/10.4136/ambi-agua.2586
Keywords: BOD, color, dissolved oxygen, salinity, soil column

Abstract

Jean laundering generates significant effluent flows with a high organic load, color, and other pollutants, making it difficult to adjust effluent releases within legal limits. Slow Sand Filters (SSF) with downflow were tested for seven days (bench scale), to propose an after-treatment of effluents from an Effluent Treatment Plant of a jean laundry. The research evaluated the removal of the following parameters: color, turbidity, chemical and biochemical oxygen demand, conductivity, ammonia, total phosphorus and salinity of the textile effluent. The experimental apparatus had four SSF: the first filter was fed with distilled water, while the other three filters (triplicates) were fed with effluent. The filters had, on average, the following removal efficiencies: 91% for ammonia, 61.24% color, 89.43% turbidity, and 83.54% for phosphorus. Regarding the removal of organic matter, 98.11% for BOD and 81.17% for COD, demonstrating that SSFs were efficient in removing particulate, dissolved materials and organic matter.


Published
03/11/2020
Issue
Vol. 15 No. 6 (2020)
Section
Papers

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