Use of coalescer with a bed made of cationic exchange resins for pre-treatment of emulsified oil from oily wastewater

被引:0
作者
Passos Motta, Alberico Ricardo [1 ,2 ,3 ,4 ]
Borges, Cristiano Piacsek [5 ,6 ,7 ]
Kiperstok, Asher [8 ,9 ,10 ,11 ]
Esquerre, Karla Patricia [12 ,13 ,14 ,15 ]
机构
[1] Univ Fed Bahia UFBA, Sanitarista, Salvador, BA, Brazil
[2] Newcastle Univ, Engn Ambiental, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[3] Univ Fed Bahia, Engn Ind, Salvador, BA, Brazil
[4] Meio Ambiente Petrobras, Salvador, BA, Brazil
[5] Univ Fed Rio de Janeiro, Quim, Rio de Janeiro, RJ, Brazil
[6] Univ Fed Rio de Janeiro, Engn Quim, Rio de Janeiro, RJ, Brazil
[7] Univ Fed Rio de Janeiro, Programa Engn Quim, Inst Alberto Luiz Coimbra, Rio de Janeiro, RJ, Brazil
[8] Technion Israel Inst Technol, Civil, IL-32000 Haifa, Israel
[9] Univ Manchester, Engn Quim Tecnol Ambientais, Manchester M13 9PL, Lancs, England
[10] TECLIM Rede Tecnol Limpas, Maringa, Parana, Brazil
[11] Univ Fed Bahia, Programa Engn Ind, Escola Politecn, Salvador, BA, Brazil
[12] Univ Fed Alagoas UFAL, Quim, Maceio, AL, Brazil
[13] Univ Estadual Campinas UNICAMP, Engn Quim, Campinas, SP, Brazil
[14] Hokkaido Univ, Engn Socioambiental, Sapporo, Hokkaido 060, Japan
[15] Univ Fed Bahia, Dept Engn Quim, Programa Posgrad Engn Ind, Escola Politecn, Salvador, BA, Brazil
关键词
oil; emulsion; coalescence; porous bed; STEADY-STATE COALESCENCE; FIBROUS BED;
D O I
10.1590/S1413-41522015020000116813
中图分类号
TV21 [水资源调查与水利规划];
学科分类号
081501 ;
摘要
The wastewater treatment with a bed coalescer consists of inducing the increase of oil droplets by passing the emulsion through a porous bed, so they can flote by gravitational separation process. The objective of this paper is to present technical and experimental considerations on the use of a granular bed coalescer, with a bed made of cationic exchange resins, for pre-treatment of emulsified oil from oily wastewater. Tests were conducted on a bench scale unit, which was fed with oil in water emulsion with oil and grease concentration (O&G) between 200 and 400 mg.L-1 and oil droplet diameter between 3 and 8 mu m. The fluid velocities (v) tested were between 4.4 and 17.4 m.h(-1). The coalescer bed height was fixed at 5 cm. The parameters used for assessing the tests efficiency were oil removal efficiency percentage (%E), differential pressure across the bed and, bed permeability. Results showed that the process operates in a steady-state condition and that the influent O&G affected the process efficiency, as well as the fluid velocities which reduced the efficiency significantly, with its increasing. The %E values obtained were between 50 and 20-30% to v between 4.4 and 17.4 m.h(-1), respectively.
引用
收藏
页码:235 / 242
页数:8
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