Journal
WATER RESOURCES AND INDUSTRY
Volume 26, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.wri.2021.100157
Keywords
Esterquat; Surfactant wastewater; Industrial wastewater; Fabric softener
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Funding
- Faculty of Environmental Engineering, Wroclaw University of Science and Technology
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The study found that treating industrial wastewater with ceramic membrane modules can significantly reduce COD, TOC, and turbidity, while achieving a certain degree of wastewater concentration.
The composition of industrial wastewater, its purification and concentration processes using ceramic membrane modules were investigated. Industrial wastewater produced as a result of washing the production line at a plant manufacturing cationic surfactants (in the esterquats group) was subjected to membrane filtration in a semi-pilot plant, run in concentration mode. Analysis of the raw wastewater showed very high organic matter content, expressed as COD, in the range of 17,700 to 24,300 mg L-1 and the concentration of cationic surfactants amounted to 2890-3390 mg L-1 mg/L. Ceramic membrane modules with a pore size of 0.14 mu m exhibited high effectiveness in surfactant wastewater treatment. COD, TOC and turbidity were reduced by 93%, 95%, and 99%, respectively. When the process was run in concentration mode almost 50% of the permeate was recovered.
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