利用活性污泥处理热水液化废水:一项概念验证研究
Cyrus Li1, Jiefu Wang1, Meicen Liu2
1Department of Biological Systems Engineering, Virginia Tech, Blacksburg, Virginia, USA.
概括
市政活性污泥 (AS) 有效地处理污水污泥的热水液化 (HTL) 的有毒废水,去除超过91%的可溶性化学氧需求 (sCOD). 优化的条件提高了AS的性能,使HTL废水处理更可行.
科学领域:
- 环境工程环境工程
- 生物技术是生物技术.
- 废水处理 废水处理
背景情况:
- 水热液化 (HTL) 是将湿生物质转化为生物能源的关键.
- 来自HTL的有毒水相废水对商业化构成重大挑战.
- 有效地处理这些废水对于可持续的生物能源生产至关重要.
研究的目的:
- 评估使用市政活性污泥 (AS) 处理污水污泥养的HTL废水 (SS-HTLWW).
- 为AS优化种植条件,以增强有毒化合物的去除.
- 评估AS.的生物矿化和可溶化学氧需求 (sCOD) 的吸附.
主要方法:
- 优化城市活性污泥 (AS) 培养条件.
- 采用传统的生物过程优化技术:过度化,高温和营养补充.
- 评估SS-HTLWW稀释因子对处理效率的影响.
主要成果:
- 优化的AS从SS-HTLWW中去除了高达91.2%的sCOD,其中82%归因于生物过程和吸附.
- 生物处理优化使sCOD最大利用率 (Rm) 增加了44-67%.
- AS有效地消除了N-异环,化合物和有机酸,证明了对SS-HTLWW毒性的抵抗力.
结论:
- 市政活性污泥是处理有毒SS-HTLWW的可行选择.
- 优化AS处理显著改善sCOD去除和污染物降解.
- 强迫性COD需要进一步调查,以确保完全符合废水排放要求.
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