水力旋流器高固废脱砂特性及定量分析

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy Pub Date : 2025-09-19 DOI:10.1016/j.biombioe.2025.108389

Xiang Fang , Jiaqi Fan , Xiujin Li , Xueren Li , Jiyuan Tu , Zhengbiao Peng , Dazhao Gou , Jianrong Wang

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引用次数: 0

摘要

预处理过程中有机废弃物中无机颗粒物的有效分离是提高厌氧发酵性能的关键。本文采用双入口水力旋流器对高固含量生物废弃物的脱砂过程进行了数值研究。分析了不同工况下的流动特性和颗粒动力学特性。结果表明，有机颗粒的运动倾向于遵循液体流动模式，而砂粒的运动受总固体浓度和进料速度的显著影响。分离效率随进料速度和TS浓度的增加而降低，其中进料速度的影响更为明显。值得注意的是，当进料速度为2.5 m/s， TS浓度为2%时，分离效率达到100%。定量分析进一步表明，当颗粒速度接近3 m/s时，砂粒分离效果最佳。这些研究结果为研究生物垃圾脱砂机理提供了有价值的见解，并为提高厌氧消化效率提供了指导。

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Characterization and quantitively analysis on the high solid biowaste de-sanding utilizing hydrocyclone

Efficient separation of inorganic particulate matter from organic waste during pretreatment is crucial for enhancing anaerobic fermentation performance. This study presents a numerical investigation of the de-sanding process in high-solid biowaste using a dual-inlet hydrocyclone. The flow behavior and particle dynamics under various operating conditions were analyzed. Results show that organic particles tend to follow the liquid flow pattern, whereas the motion of sand particles is significantly influenced by total solids (TS) concentration and feed velocity. Separation efficiency decreases with increasing feed rate and TS concentration, with feed velocity having a more pronounced effect. Notably, 100 % separation efficiency was achieved at a feed velocity of 2.5 m/s with 2 % TS concentration. Quantitative analysis further revealed that optimal sand separation occurred when particle velocities approached 3 m/s. These findings offer valuable insights into the biowaste de-sanding mechanism and provide guidance for improving anaerobic digestion efficiency.

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来源期刊

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.