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http://dx.doi.org/10.4491/KSEE.2011.33.11.855

Removal of Nitrogen Using by SOD Process in the Industrial Wastewater Containing Fluoride and Nitrogen from the Zirconium Aolly Tubing Production Factory of the Nuclear Industry  

Cho, Nam-Chan (KEPCO Nuclear Fuel Company, Ltd.)
Moon, Jong-Han (KEPCO Nuclear Fuel Company, Ltd.)
Ku, Sang-Hyun (KEPCO Nuclear Fuel Company, Ltd.)
Noh, Jae-Soo (Korea University of Technology and Education)
Publication Information
Journal of Korean Society of Environmental Engineers / v.33, no.11, 2011 , pp. 855-859 More about this Journal
Abstract
The main pollutants from zirconium alloy tubing manufacturing process in nuclear industry are nitrate ($NO_3-N$) and fluoride (F-)Nitric acid, and hydrofluoric acid is used for acid pickling. The process for the removal of nitrate and fluoride is composed of 1st chemical coagulation, SOD (Sulfur Oxidation Denitrification) process using sulfur-oxidizing denitrification, and 2nd chemical coagulation. The characteristic of the wastewater treatment is an application of SOD process. The SOD Process is highly received attention because it is significantly different from existing processes for sulfur denitrification. A JSC (JeonTech-Sulfur- Calcium) Pellet is unification of sulfur and alkalinity material. According to result of SOD process in wastewater treatment plant, the removal efficiency of T-N was over 91% and the average concentration of T-N from influent was 147.55 mg T-N/L and that from effluent was 12.72 mg T-N/L. Therefore, SOD process is a useful to remove nitrogen from inorganic industrial wastewater and a new development of microbial activator was shown to be stable for activation of autotrophic bacteria.
Keywords
SOD (Sulfur Oxidation Denitrification) Process; Alkalinity; Microbial Activator;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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