Sludge Stabilization of Vermifilter Andanalysis of Influence Factors

2009 3rd International Conference on Bioinformatics and Biomedical Engineering Pub Date : 2009-07-14 DOI:10.1109/ICBBE.2009.5163405

Min Wu, Ning Liu, Chuanyin Wei, Meiyan Xing, Shanjie Lou

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Abstract

Under different operating modes, this paper studies on the sludge stabilization effect and of vermifilter in different medium, and analyzed efficiency factors of the sludge stability in filter. The results showed that after the treatment of vermifilter, the average sludge VSS/SS was smaller than 50%, the average VFA was 30-40%, and the average organism decomposition rate was up to 48-65%, so the system's whole effect was perfect. Filter medium was one of the most important factors which affect the function of sludge stabilization. Compared to silica sands, earthworms' sludge digestion efficiency in ceramic pellets was higher, and the system's whole effect was better. It was mostly due to the damage to earthworms caused by filter medium. The most suitable temperature for earthworms' sludge digestion efficiency was 23-28degC, and the whole effect was the best at the same condition. Since hydraulic overloading was somehow negative to earthworms' normal activities and its sludge digestion efficiency, it should be less than 6.00 m/d.

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蚯蚓滤池污泥稳定性及影响因素分析

在不同的运行模式下，研究了不同介质中污泥的稳定效果，并分析了污泥在过滤器中稳定性的影响因素。结果表明，经过微滤池处理后，污泥VSS/SS平均小于50%，VFA平均为30-40%，生物分解率平均可达48-65%，系统整体效果较好。过滤介质是影响污泥稳定性能的重要因素之一。与硅砂相比，蚯蚓在陶瓷颗粒中的污泥消化效率更高，系统整体效果更好。主要原因是过滤介质对蚯蚓的伤害。蚯蚓污泥消化效率的最适温度为23 ~ 28℃，相同条件下整体效果最佳。由于水力超载对蚯蚓的正常活动和污泥消化效率有一定的负面影响，因此应小于6.00 m/d。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2009 3rd International Conference on Bioinformatics and Biomedical Engineering

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