Water and Environmental Research and Study Centre, University of Jordan, Queen Rania Alabdulla St., Amman, Jordan.
Environ Monit Assess. 2011 Jan;172(1-4):419-26. doi: 10.1007/s10661-010-1344-4. Epub 2010 Feb 18.
Composite samples of septage discharging at the Khirbit As-Samra municipal wastewater treatment plant were analyzed during the period from February to the end of October 2007. Septage showed difference in concentrations of pollutants between summer and winter. The average total chemical oxygen demand (COD) of 6,425 mg/L during summer was 2.16 times greater than that in winter, which is 2,969 mg/L. The total biochemical oxygen demand (5 d) represented 45% of total COD in both winter and summer. Anaerobic biodegradability was 75% after 81 d of digestion at 35°C with a biodegradation rate constant (k) of 0.024 d⁻¹, which was lower compared with 0.103 d⁻¹ calculated for wastewater with domestic origin in Jordan. Aerobic biodegradability for septage was 48%-COD basis-after 7 d of digestion at 35°C. The lower anaerobic biodegradation rate of septage compared with that of raw wastewater of domestic origin suggested that septage could have a negative effect on the performance of a domestic wastewater treatment plant if septage discharges are not taken into account in the original design of the treatment plant.
2007 年 2 月至 10 月底期间，分析了 Khirbit As-Samra 市污水处理厂排放的污水污泥综合样本。污水污泥中污染物浓度在夏季和冬季有所不同。夏季的平均总化学需氧量（COD）为 6425mg/L，是冬季 2969mg/L 的 2.16 倍。冬季和夏季的总生化需氧量（5d）均占总 COD 的 45%。在 35°C 下消化 81 天后，厌氧生物降解率为 75%，降解速率常数（k）为 0.024d⁻¹，与约旦国内源废水计算出的 0.103d⁻¹相比有所降低。在 35°C 下消化 7 天后，污水污泥的好氧生物降解率为 48%-COD 基础。与国内源原废水相比，污水污泥的厌氧生物降解率较低，这表明如果在处理厂的原始设计中不考虑污水污泥的排放，那么污水污泥可能会对生活污水处理厂的性能产生负面影响。
