在废水处理厂集成热水液化技术的技术经济评估
Arif Hussain1, Konstantinos Anastasakis2
1Department of Biological and Chemical Engineering, Aarhus University, Hangøvej 2, Aarhus 8200, Denmark.
Bioresource technology
|January 1, 2025
概括
在分散的废水处理厂 (WWTP) 中生产生物原料的热水液化 (HTL) 的技术经济分析表明,运营成本是关键的. 竞争性生物原料价格可以实现较大的WWTP,受产量和污泥含量的影响.
科学领域:
- 废物转化为能源的技术.
- 生物炼油工艺是生物炼油工艺的过程.
- 可持续的资源管理是资源的可持续管理.
背景情况:
- 污水处理厂 (WWTP) 产生大量的污水污泥.
- 水热液化 (HTL) 为将污泥转化为生物原料提供了一个有前途的途径.
- 通过HTL进行污泥的分散处理,为局部能源回收提供了机会.
研究的目的:
- 通过与WWTP集成的分散的HTL工厂进行生物原料生产的技术经济分析 (TEA).
- 评估HTL在各种WWTP大小 (0.1到100万人口等价物) 的经济可行性.
- 确定影响生物原料最低售价 (MBSP) 的关键因素.
主要方法:
- 在Aspen Plus®中利用稳定状态过程模拟进行质量和能量平衡计算.
- 采用了水热液化 (HTL) 的详细运动模型.
- 基于典型的丹麦WWTP (150k PE) 作为基准案例进行了技术经济分析.
主要成果:
- 运营费用 (公用事业,维护,工资) 是占主导地位的成本因素.
- 从323公斤/小时的干固体中生产94公斤/小时的生物原料,获得1.4欧元/公斤 (1.5欧元/公斤) 的MBSP,取决于工厂大小.
- 污泥处理信用使生产成本在超过300k PE的WWTP中具有竞争力.
结论:
- 分散的HTL在技术上是可行的,用于从WWTP污泥生产生物原料.
- 经济可行性与运营成本,工厂规模和污泥特性密切相关.
- 生物原料产量,劳动力成本和污泥干物质含量是优化MBSP的关键参数.
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