Title :
Experimental Study on Pretreatment of High Concentration Ammonia-Nitrogen Wastewater by TiO2 Photocatalysis
Author :
Cui, Jianguo ; Zheng, Zhibin
Author_Institution :
Coll. of Environ. Sci. & Eng., Taiyuan Univ. of Technol., Taiyuan, China
Abstract :
In order to reach a bigger NO2 -/NO3 - value in post-processing of biological shortcut nitrification, the pretreatment of the ammoniac wastewater was carried out using TiO2 photo-catalysis, and the optimizing reaction conditions were obtained. The results showed that after TiO2 pretreatment the NO2 -/NO3 - value in the wastewater was greater than 2 through adjusting the pH value of reaction solution, photocatalytic reaction time as well as controlling the initial ammonia-nitrogen concentration of 18.7 mmol/L in wastewater. This technique also demonstrated that the TiO2 photocatalytic method is easy to maintain NO2 - accumulation steadily, and can also offer advantaged conditions for the enhancement of the following biological shortcut nitrification efficiency.
Keywords :
ammonia; biotechnology; catalysis; nitrogen; nitrogen compounds; photochemistry; titanium compounds; wastewater treatment; NH3-N2; NO2 -; TiO2; biological shortcut nitrification; high-concentration ammonia-nitrogen wastewater; photocatalysis reaction time; reaction solution; wastewater pretreatment; Biology; Chemistry; Detectors; Educational institutions; Glass; Inductors; Lamps; Nitrogen; Temperature control; Wastewater;
Conference_Titel :
Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009. 3rd International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2901-1
Electronic_ISBN :
978-1-4244-2902-8
DOI :
10.1109/ICBBE.2009.5162826
