数字农科院2.0

RESEARCH ON THE INFLUENCE OF EXTRUSION PARAMETERS ON SOLID-LIQUID SEPARATION PERFORMANCE OF LIVESTOCK MANURE AND OPTIMIZATION OF PARAMETERS

文献类型： 外文期刊

作者： Zhao, Weisong;Gao, Qimin;Guan, Chunsong;Xu, Binxing;Ma, Biao;Gong, Yan

作者机构：

关键词： livestock manure;screw extrusion;solid-liquid separation;parameter optimization

期刊名称： INMATEH-AGRICULTURAL ENGINEERING

ISSN： 2068-4215

年卷期： 2025 年 76 卷 2 期

页码：

收录情况： EI（2025版） ; ; ESCI（2025版）

摘要： Solid-liquid separation is essential for utilizing livestock and poultry manure, impacting greenhouse gas emissions and pollution control. This study aimed to address the high water content and low efficiency issues in screw extrusion solid-liquid separation technology. A screw separator was designed, and a Box-Behnken test scheme was used to optimize parameters with dairy manure as the test object. The study identified extender length, screw rotation speed, and counterweight mass as the influencing factors, with extrudate water content and solids extraction rate as evaluation indices. A quadratic regression model was established to describe the relationships between the influencing factors and evaluation indices. Optimal parameters were determined as: extender length=10 cm, screw rotation speed=55 r/min, and counterweight mass=34.73 kg. The predicted extrudate water content was 65.44 %, and solids extraction rate was 2.39 m3/h. Validation tests showed an average extrudate water content of 67.71 % and solids extraction rate of 2.10 m3/h, with relative errors of 3.3 % and 9.6 % respectively. The model's reliability was confirmed, providing a reference for designing livestock and poultry manure screw extrusion separators.

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