Journal
BIORESOURCE TECHNOLOGY
Volume 102, Issue 3, Pages 2296-2300Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.10.057
Keywords
Lightweight; Sludge; Ceramic; BAF; Pharmaceutical wastewater
Funding
- National Technological Support Plan [2006BAJ08B05-2]
- Shandong High-tech Project [2007GG20006003]
- Shandong Province of China [2006061073]
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Novel media-ultra-lightweight sludge ceramics (ULSC) employed in an upflow lab-scale biological aerobic filter (BAF) were investigated for pharmaceutical advanced wastewater treatment. The influences of the volume ratio of pharmaceutical wastewater to domestic wastewater (PW/DW), hydraulic retention time (HRT) and air-liquid ratio (A/L) on chemical oxygen demand (CODCr) and ammonium (NH4+-N) of the effluent were investigated. When PW/DW of 4:1, HRT of 6 h, and A/L of 5:1 were applied, the mean effluent concentration of NH4+-N was 6.2 mg L-1, and the maximum CODCr concentration in the effluent was 96 mg L-1. Both NH4+-N and CODCr did not exceed the limits of the national discharge standards (NH4+-N <= 15 mg L-1, CODCr <= 100 mg L-1). In addition, the BAF system showed a strong capacity of further removal from NH4+-N of the effluent. (C) 2010 Elsevier Ltd. All rights reserved.
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