Document Type : Research Paper

Authors

¹ Ph.D. Candidate, Department of Chemical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran

² Associate Professor, Department of Chemistry, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran

³ Assistant Professor, Department of Chemical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran

⁴ Assistant Professor, Department of Chemistry, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran

Highlights

• The disinfection performance of Javelle water and chlorinated water in pilot and industrial cooling towers was evaluated;
• Due to the problems caused by the use of Javelle water, and especially its quality, which is very sensitive to light and heat and decomposes quickly, two substances, namely chlorinated water (hypochlorous acid) and Javelle water (sodium hypochlorite), were examined in pilot and industrial cooling towers;
• The experiments on the pilot tower showed that the performance of chlorinated water in the disinfection and removal of bacteria and microorganisms was excellent, and the total bacterial count (TBC) compared to Javelle water declined from 1000 to less than 800 (cfu/mL);
• The experiments on the industrial cooling tower of an acetic acid unit were also carried out for six months, and pH, free chlorine, and TBC were measured. Moreover, the results of process experiments and TBC tests confirmed the acceptable performance of chlorinated water.

Keywords

20.1001.1.23452412.2021.10.2.1.2

• Chemical Engineering