AWMC, Advanced Water Management Centre, The University of Queensland, St Lucia, Queensland 4072, Australia.
AWMC, Advanced Water Management Centre, The University of Queensland, St Lucia, Queensland 4072, Australia; CRC for Water Sensitive Cities, PO Box 8000, Clayton, Victoria 3800, Australia.
Bioresour Technol. 2017 Dec;245(Pt A):1155-1161. doi: 10.1016/j.biortech.2017.08.115. Epub 2017 Aug 21.
This study evaluated high-rate activated sludge treatment across a broad range of short solids retention times (SRT)s (0.5-3d) and found a strong SRT-outcome dependence for performance and subsequent anaerobic degradability of the sludge. Up to 50% total nitrogen, and 35% ammonia removal was also achieved at the longer SRTs, via partitioning rather than reaction. The aerobic SRT significantly affected the anaerobic degradability of the sludge produced (p<0.001), with degradability increasing from 66% to over 80% while reducing the SRT from 3d to 0.5d. This is higher than predicted by conventional models, likely due to additional mechanisms such as adsorption and storage, not included in these.
本研究评估了在广泛的短固体停留时间（SRT）（0.5-3 天）范围内的高速率活性污泥处理，并发现性能和随后污泥的厌氧降解性与 SRT 结果有很强的依赖性。通过分配而不是反应，在较长的 SRT 下也可实现高达 50%的总氮和 35%的氨去除。好氧 SRT 显著影响所产生污泥的厌氧降解性（p<0.001），当 SRT 从 3 天减少到 0.5 天时，降解性从 66%增加到 80%以上。这高于传统模型的预测，可能是由于这些模型未包含的额外机制，如吸附和储存。
