The characteristics and application of sludge-fly ash ceramic particles (SFCP) as novel filter media.
Novel filter media-sludge-fly ash ceramic particles (SFCP) were prepared using dewatered sludge, fly ash and clay with a mass ratio of 1:1:1. Compared with commercial ceramic particles (CCP), SFCP had higher total porosity, larger total surface area and lower bulk and apparent density. Tests of heavy metal elements in lixivium proved that SFCP were safe for wastewater treatment. A lab-scale upflow anaerobic bioreactor was employed to ascertain the application of SFCP in denitrification process using acetate as carbon source. The results showed that SFCP reactor brought a relative superiority to CCP reactor in terms of total nitrogen (TN) removal at the optimum C/N ratio of 4.03 when volumetric loading rates (VLR) ranged from 0.33 to 3.69 kg TN (m(3)d)(-1). Therefore, SFCP application, as a novel process of treating wastes with wastes, provided a promising way in sludge and fly ash utilization.
Han
Shuxin
S
Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, China.
Yue
Qinyan
Q
Yue
Min
M
Gao
Baoyu
B
Li
Qian
Q
Yu
Hui
H
Zhao
Yaqin
Y
Qi
Yuanfeng
Y
D000693:Anaerobiosis; D019149:Bioreactors; D002244:Carbon / Q000737:chemistry*; D002516:Ceramics; D060729:Coal Ash; D004867:Equipment Design; D005374:Filtration; D007220:Industrial Waste; D009584:Nitrogen / Q000302:isolation & purification; D010316:Particle Size; D052638:Particulate Matter / Q000737:chemistry*; D012722:Sewage / Q000737:chemistry*; D013499:Surface Properties; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*
D060729:Coal Ash; D007220:Industrial Waste; D052638:Particulate Matter; D012722:Sewage; D014874:Water Pollutants, Chemical; D002244:Carbon; D009584:Nitrogen