Alferes J, García-Heras J L, Roca E, García C, Irizar I
CEIT and TECNUN. Po de Manuel Lardizabal 15, 20018 San Sebastian, Spain.
Water Sci Technol. 2008;57(5):747-52. doi: 10.2166/wst.2008.104.
The combination of equalisation tanks and anaerobic digesters represents a typical design scenario within the treatment of industrial wastewaters. In this context, if the hydraulic capacity of the equalisation tanks is effectively handled, significant improvements in the performance of anaerobic digesters can be achieved in terms of process stability and biogas production. This paper presents a rule-based control strategy for anaerobic reactors with the objective of maximising in the long-term the net production of biogas. The control algorithm combines real-time information about the state of the anaerobic digester with on-line measurements about the wastewater volume of the equalisation tank in order to set permanently the appropriate production of biogas. Such a strategy guarantees a continuous influent flow so that emptying and overflowing episodes in the equalisation tank can be prevented. Aiming at a further full-scale implementation, only reliable and cost-effective on-line instrumentation has been considered within the control architecture. The performance of the proposed control approach has been validated for an anaerobic hybrid configuration (AHR) by simulation using the IWA ADM1 model.
均衡池和厌氧消化池的组合是工业废水处理中的一种典型设计方案。在这种情况下，如果均衡池的水力容量得到有效处理，就可以在工艺稳定性和沼气产量方面显著提高厌氧消化池的性能。本文提出了一种基于规则的厌氧反应器控制策略，目标是长期最大化沼气的净产量。该控制算法将厌氧消化池状态的实时信息与均衡池废水体积的在线测量相结合，以便永久设定合适的沼气产量。这种策略保证了连续的进水流量，从而可以防止均衡池出现排空和溢流情况。为了进一步实现全面实施，在控制架构中仅考虑了可靠且具有成本效益的在线仪表。通过使用国际水协厌氧消化模型1（IWA ADM1）进行模拟，验证了所提出的控制方法在厌氧混合配置（AHR）中的性能。
