Experimental and CFD simulation study on anaerobic digestion using dextran pharmaceutical wastewater based on cyclic fluidization hydraulic mixing,Environmental Progress & Sustainable Energy

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Experimental and CFD simulation study on anaerobic digestion using dextran pharmaceutical wastewater based on cyclic fluidization hydraulic mixing
Environmental Progress & Sustainable Energy ( IF 2.1 ) Pub Date : 2021-04-21 , DOI: 10.1002/ep.13656
Langui Xu ₁ , Luqian Yang ₂ , Shurui Guo ₃ , Jiawei Zhou ₁ , Tao Luo _{4,

5} , Yi Ran ₄ , Jiang Li _{3,

4} , Enshen Long ₃ , Zili Mei ₄ , Ruyi Huang _{1,

2,

4}

Affiliation

Pharmaceutical wastewater is a kind of high-hazardous waste. To realize non-waste production, experiment and computational fluid dynamics (CFD) simulation were performed to reveal the hydraulic mechanism of mixing modes. Three digesters, numbered 0# (no-port), 1# (one-port), and 4# (four-port), were conducted by dextran pharmaceutical wastewater. Digester 0# is the control group without mixing. Mixing mode of bottom inlet and high-position outlet is employed to 1# and 4#, the outlets of 1# and 4# are centralized outlet with only one port and distributed outlets with four ports, respectively. Experiment result shows the daily biogas production of 1# and 4# are 45% and 58% higher than 0#, and the pollutants removal rate increased 20% and 24%, respectively. CFD simulation shows the second phase (dextran wastewater) of 4# failing to form a complete hydraulic path like the first phase (water), which explain the mixing modes can greatly improve the biogas yield, but the four-port mode has a weaker advantage than the one-port.

中文翻译：

基于循环流化水力混合的葡聚糖制药废水厌氧消化实验及CFD模拟研究

制药废水是一种高危废物。为了实现无废物生产，进行了实验和计算流体动力学 (CFD) 模拟，以揭示混合模式的液压机制。0#（无口）、1#（一口）、4#（四口）三个消化池，用葡聚糖制药废水进行消化。消化器0#为未混合的对照组。1#和4#采用底部进水和高位出水混合方式，1#和4#出口分别为单口集中出口和四口分布式出口。实验结果表明，1#和4#沼气日产量比0#提高45%和58%，污染物去除率分别提高20%和24%。

更新日期：2021-04-21

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