Research on sludge-fly ash ceramic particles (SFCP) for synthetic and municipal wastewater treatment in biological aerated filter (BAF).
Sludge-fly ash ceramic particles (SFCP) and clay ceramic particles (CCP) were employed in two lab-scale up-flow biological aerated filters (BAF) for wastewater treatment to investigate the availability of SFCP used as biofilm support compared with CCP. For synthetic wastewater, under the selected hydraulic retention times (HRT) of 1.5, 0.75 and 0.37 h, respectively, the removal efficiencies of chemical oxygen demand (COD(Cr)) and ammonium nitrogen (NH(4)(+)-N) in SFCP reactor were all higher than those of CCP reactor all through the media height. Moreover, better capabilities responding to loading shock and faster recovery after short intermittence were observed in the SFCP reactor compared with the CCP reactor. For municipal wastewater treatment, which was carried out under HRT of 0.75 h, air-liquid ratio of 7.5 and backwashing period of 48 h, the SFCP reactor also performed better than the CCP reactor, especially for the removal of NH(4)(+)-N.
Zhao
Yaqin
Y
Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, China.
Yue
Qinyan
Q
Li
Renbo
R
Yue
Min
M
Han
Shuxin
S
Gao
Baoyu
B
Li
Qian
Q
Yu
Hui
H
D000332:Aerobiosis; D000538:Aluminum Silicates / Q000378:metabolism; D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000592:standards; D002244:Carbon / Q000378:metabolism*; D002516:Ceramics / Q000378:metabolism*; D002947:Cities; D000077215:Clay; D060729:Coal Ash; D005374:Filtration / Q000379:methods*; D019216:Metals, Heavy / Q000032:analysis; D010100:Oxygen / Q000302:isolation & purification; D052638:Particulate Matter / Q000378:metabolism*; D000644:Quaternary Ammonium Compounds / Q000302:isolation & purification; D012722:Sewage / Q000382:microbiology*; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods*
D000538:Aluminum Silicates; D060729:Coal Ash; D019216:Metals, Heavy; D052638:Particulate Matter; D000644:Quaternary Ammonium Compounds; D012722:Sewage; D014874:Water Pollutants, Chemical; D002244:Carbon; D010100:Oxygen; D000077215:Clay