Evaluation and start-up of an electro-Fenton-sequencing batch reactor for dairy wastewater treatment

Water Resources and Industry

卷:25

Shirish H. Sonawane¹  Mohammad Malakootian²  Yang Tao³  Mohammad Reza Heidari⁴  Grzegorz Boczkaj⁵  Xun Sun⁶  Hakimeh Mehdizadeh⁷ 

[1] Corresponding author. Gdansk University of Technology, Faculty of Chemistry, Department of Process Engineering and Chemical Technology, G. Narutowicza St. 11/12, 80, Gdansk, Poland.;

[2] Corresponding author.;

[3] EcoTech Center, Gdansk University of Technology, G. Narutowicza St. 11/12, 80-233, Gdansk, Poland;

[4] Department of Environmental Health, School of Public Health, Bam University of Medical Sciences, Bam, Iran;

[5] Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman, Iran;

[6] Gdansk University of Technology, Faculty of Chemistry, Department of Process Engineering and Chemical Technology, Gdansk, Poland;

[7] Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of Education, School of Mechanical Engineering, Shandong University, Shandong, China;

关键词: Wastewater treatment;    Advanced oxidation process;    Fenton;    Sequencing batch reactor;    Biological treatment;    Pollutants;   

DOI  :  

来源: DOAJ

【 摘 要 】

This study examined the performance of an integrated wastewater (WW) treatment system, namely an electro-Fenton (EF)-sequencing batch reactor (SBR), for dairy industry WW. The EF process was used as the first stage of the SBR. It degrades bio-refractory compounds via advanced oxidation processes, thereby resulting in the formation of simple biodegradable intermediates. Several factors, including the hydraulic retention time (HRT), sludge volume index (SVI), and sludge retention time (SRT) of the EFSBR, were optimized. The effectiveness was studied for 1 y laboratory-scale experiments under stable conditions (HRT of 10 h, SRT of 15 d, mixed liquor suspended solids concentration of 3500 mg/L, and SVI of 89), which revealed 99% chemical oxygen demand, 97% total nitrogen, and 95% total phosphorus removal. Thus, the developed system is economically feasible and superior to other conventional biological treatment systems.

【 授权许可】

Unknown