Application of swirling bed electrochemical process in industrial wastewater treatment
- PDF / 971,470 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 47 Downloads / 186 Views
ORIGINAL PAPER
Application of swirling bed electrochemical process in industrial wastewater treatment Y. Wang1 · Y. S. Li1 · C. Z. Piao1 Received: 22 April 2020 / Revised: 6 July 2020 / Accepted: 14 September 2020 © Islamic Azad University (IAU) 2020
Abstract Based on the self-made electrochemical device, by measuring the hardness removal rate, bicarbonate removal rate, energy consumption, pH value, etc., during the device operation, the effect of three electrochemical devices on the treatment of actual industrial wastewater, including no filling, filling swirl sheet, filling swirl sheet and mixed resin, was systematically studied. The results show that the removal efficiency of hardness and bicarbonate of industrial wastewater is the best when the swirl metal sheet was added into the electrochemical device. After 5 h, the removal rate of hardness and bicarbonate of cathode and anode was 38.6 and 21.8%, respectively, and the removal rate of bicarbonate of cathode and anode was 62.4 and 100%, respectively. The maximum difference of pH value of anode and cathode effluent just demonstrated that the electrolysis effect was the best. The structure of this device was very conducive to the application in industrial wastewater. In addition, the influence of operational voltage on the electrochemical device filled with swirl sheet was appropriately discussed from the perspective of hardness, current and electric power of the effluent. The analysis results show that 10 V was the best operational voltage. At this time, the current density was 8.11 A/m2, and the hardness removal rate was 89.4%. This study could expand the practical application of electrochemical technology in industrial wastewater treatment and adds some meaningful basic theoretical data. Keywords Electrochemistry · Swirl metal sheet · Mixed resin · Hardness · Bicarbonate
Introduction For half a century, industrial manufacturing has developed rapidly; at the same time, a large number of industrial wastewater has been produced (Wang et al. 2016; Bilińska et al. 2016; Niu et al. 2016). Wastewater problem has become a more important one in environmental protection. How to deal with industrial wastewater properly while promoting industrial development has become an urgent problem during the industrial development. Therefore, it puts forward higher and higher requirements and expectations for water treatment technology.
Editorial responsibility: R Saravanan. * Y. S. Li [email protected] 1
School of Environmental and Chemical Engineering, Dalian Jiaotong University, Huanghe Road 794, Dalian 116028, China
The application of chemical methods has brought good prospects for the treatment of industrial wastewater (Orçun et al. 2011; Beltrán et al. 2004). Among them, electrochemical technology is an environment-friendly one, which refers to the use of potential difference to regulate the flow of electrons, so as to control the environmental interface process (Wang et al. 2011; Chai et al. 2020; Huang et al. 2018; Fourcade et al. 2013) (such as flocculation
Data Loading...
