EC treatment for reuse of tissue paper wastewater: aspects that affect energy consumption.
The need for more rational use of water also calls for more efficient usage. An example is the production of tissue paper, where large amounts of water are discharged into the drain because its turbidity does not allow for recirculation. While this is a serious problem, even worse is the fact that the quality of such wastewater makes it difficult not only to recirculate but also to discharge due to environmental law restrictions. In this paper, electrocoagulation is proposed as a suitable technology to meet standards of water discharge, and even better, as a treatment option for removal of turbidity. Since energy consumption has been a drawback for EC applications, relevant aspects that contribute to increase it such as cell voltage and current density have been reviewed. For this purpose a systematic micro-electrolysis study combined with macro-electrolysis experiments have provided evidence that shows it is possible to achieve a turbidity removal of 92% with an energy consumption of 0.68 kWh/m(3). Thus, the results presented in this paper support the use of EC to obtain water of acceptable quality for reuse in the tissue paper industry.
Terrazas
Eduardo
E
Instituto de Metalurgia-Facultad de Ingeniería, Universidad Autónoma de San Luis Potosí, San Luis Potosí, SLP, México.
Vázquez
Armando
A
Briones
Roberto
R
Lázaro
Isabel
I
Rodríguez
Israel
I
D003247:Conservation of Natural Resources / Q000379:methods; D055664:Electrochemical Techniques; D004572:Electrolysis / Q000379:methods*; D007220:Industrial Waste / Q000517:prevention & control*; D010209:Paper; D014874:Water Pollutants, Chemical; D018508:Water Purification / Q000379:methods*
D007220:Industrial Waste; D014874:Water Pollutants, Chemical