Title :
Enhanced phosphorus removal on the secondary effluent of wastewater treatment plant by Fly Ash
Author :
Ma, Dong ; Zhu, Zichen ; Wu, Juan
Author_Institution :
Sch. of Resource & Environ., Qingdao Agric. Univ., Qingdao, China
Abstract :
The purification of phosphate contained the secondary effluent of wastewater treatment plant (WWTP) by fly ash was investigated. The effect of pH, adsorbent dosage, and reaction time on purification efficiency was determined. The results showed that the phosphate the removal rate would increase to 83.3% when the adsorbent dosage was 5 g per 100 ml, the pH was neutral, and the reaction time was 4 h. The kinetics of phosphate on fly ash fitted pseudo-second-order kinetic plot and the adsorption process belongs to chemisorption. After phosphorus removal by fly ash, the reclaimed water fully meets the first level A criteria specified in the Discharge Standard of Pollutants for WWTP (GB 18918-2002).
Keywords :
adsorption; chemisorption; effluents; fly ash; pH; phosphorus; purification; wastewater treatment; WWTP; adsorbent dosage; adsorption process; chemisorption; fly ash; pH effect; phosphate purification; phosphorus removal; pseudo-second-order kinetic plot; reaction time; secondary effluent; wastewater treatment plant; Effluents; Fly ash; Kinetic theory; Process control; Purification; Wastewater; Wastewater treatment; adsorption; fly ash; kinetics; phosphorus removal;
Conference_Titel :
Remote Sensing, Environment and Transportation Engineering (RSETE), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-9172-8
DOI :
10.1109/RSETE.2011.5964491
