作为储热器的消化器:消化器温度对工艺稳定性,污泥液质量和脱水能力的影响
Bettina Steiniger1, Christian Hubert1, Christian Schaum1
1Institute of Hydroscience, Chair of Sanitary Engineering and Waste Management, Bundeswehr University Munich, Neubiberg, Germany.
概括
在不同温度下运行消化器,可以在水资源回收设施中储存季节性热量. 较高的温度提高了脱水能力,但增加了聚合物需求和污泥液中的可溶性COD.
科学领域:
- 环境工程 环境工程
- 废水处理 废水处理
- 厌氧消化 厌氧消化
背景情况:
- 水资源回收设施可以利用消化器温度变化进行季节性热储存.
- 整体热管理是优化设施运营的关键考虑因素.
研究的目的:
- 调查消化器温度对工艺稳定性,污泥液质量和脱水能力的影响.
- 评估消化器作为季节性热储存系统的可行性.
主要方法:
- 对实验室和实验室规模的消化器过程数据的分析.
- 在不同温度 (33-53°C) 下对无氧降解的评估.
- 污泥液质量和脱水能力测试.
主要成果:
- 在33-53°C之间的温度下观察到稳定的无氧降解,液压保留时间>20天.
- 较高的温度 (53°C) 增加了污泥液中的可溶性COD和-度.
- 在更高的温度下提高了脱水能力,但随着聚合物需求的增加.
结论:
- 消化器可以在美和热范围内作为季节性热储存.
- 在经过测试的条件下,过程稳定性,生物气产量和质量都保持不变.
- 优化消化器温度需要平衡脱水能力的好处与增加的化学需求和液体质量变化.
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