Title :
Study on Treatment Efficiency of Domestic Sewerage by Fly Ash by Adsorption Experiment
Author :
Xue, Hongqin ; Jing, Zhaoqian ; Wang, Yan
Author_Institution :
Sch. of Civil Eng., Nanjing Forestry Univ., Nanjing, China
Abstract :
This study attempted to find the adsorption law of fly ash to COD in domestic sewerage. After the elementary characterization of fly ash was described, the influence of contact time, sorbent concentration, and different pretreatment ways of fly ash, initial COD concentration and temperature on the adsorption process was investigated. Results showed adsorption equilibrium attained within 120 min time. Freundlich adsorption isotherm model fitted the experimental data better than Langmuir model. The treatment efficiency improved if fly ash was pretreated through pickling or washing. The adsorption capacity of fly ash to COD decreased with rise of temperature, which showed that the adsorption process was an exothermal process.
Keywords :
adsorption; fly ash; sewage treatment; wastewater treatment; COD concentration; Freundlich adsorption isotherm model; Langmuir model; adsorption equilibrium; contact time; domestic sewerage; exothermal process; fly ash; sorbent concentration; temperature; treatment efficiency; Boilers; Chemicals; Fly ash; Oscillators; Ovens; Silicon; Sludge treatment; Solids; Temperature; Wastewater treatment;
Conference_Titel :
Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4712-1
Electronic_ISBN :
2151-7614
DOI :
10.1109/ICBBE.2010.5517658
