Abstract
Abstract The increased demand for textile products leads to an increase in the quantity of wastewater discharged. It becomes indeed one of the most critical health and environmental problems in the world. The main challenge, therefore, is to develop innovative techniques for treating this wastewater with low production costs and better efficiency. The major objective of this work was to investigate the efficiency of the coupling of the coagulation–flocculation and the anodic oxidation processes on the platinum electrode in the removal of organic, mineral, and microbial pollution contained in textile effluents. A series of experiments is carried out on samples prepared in the laboratory, in which the textile effluent was mixed with a secondary effluent from an urban wastewater treatment plant. The treatment consists of two steps: a coagulation–flocculation process using aluminum salts as a coagulant and an anodic oxidation on the platinum electrode using photovoltaic panels for the production of electric current. The treatment at optimized conditions reveals that the coupling of the two processes made it possible to achieve satisfactory results. The abatement rates were 95.97% for the turbidity, 90% for COD, 100% for BOD, 100% for , 53.6% for , and 100% for . The coupling of the two processes ensured the complete elimination of fecal germs. Thanks to the satisfactory results, the obtained permeate can be reused in the dyeing process in the textile industry.
Highlights
Worldwide environmental issues related to the textile industry are typically those associated with water pollution caused by the discharge of wastewater effluent since it contains toxic substances
This decrease can be explained by the substances found in the industrial effluent and the products used during the textile production chain, which are capable of destroying the pathogenic germs
The main objective of this work was to study the elimination of organic, nitrogen, phosphorus and microbial pollution contained in the textile effluent (TE) by the coupling of the C-F and the advanced oxidation processes (AOPs)
Summary
Worldwide environmental issues related to the textile industry are typically those associated with water pollution caused by the discharge of wastewater effluent since it contains toxic substances. The composition of wastewater from dyeing and textile processes varies considerably from day to day and even from hour to hour, depending on dye, fabric, and concentration of fixing compounds that are added (Kim et al ). This wastewater is very stable in the environment and resistant to oxidation and biodegradation (Croce et al ). The treatment of textile effluents is a major concern since the rejection of such wastewater drastically decreases oxygen concentration in the aquatic ecosystems
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