THE ELECTRODEWATERING OF SEWAGE SLUDGES
THE ELECTRODEWATERING OF SEWAGE SLUDGES
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DOI：
10.1080/07373939908917548
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发表时间：
1999-03
影响因子：
3.3
通讯作者：
W. A. Barton;S. Miller;C. Veal
中科院分区：
文献类型：
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作者：
W. A. Barton;S. Miller;C. Veal
摘要电脱水(EDW)是一种利用电场强化传统压力过滤的新兴技术，具有改善脱水性能的潜力，特别是对难处理的物料。CSIRO在EDW方面拥有多年的经验，从小规模测试到示范试验。最近的一项计划调查了EDW对好氧废水处理污泥的适用性，这种污泥特别难用传统设备脱水。实验室规模的过滤实验使用EDW生产固体含量为35-46wt%的蛋糕，而仅使用加压过滤生产的蛋糕的固体含量为24-30wt%。这篇论文：·描述了脱水结果是如何实现的；·确定了EDW的水分去除极限与污泥中水的形态之间的关系；·显示了初步尝试对EDW过程进行数学建模的结果
ABSTRACT Electrodewatering (EDW), the enhancement of conventional pressure filtration by an electric field, is an emerging technology with the potential to improve dewatering especially for difficult materials. CSIRO has many years of experience in EDW, ranging from bench scale tests to demonstration trials. A recent programme has investigated the applicability of EDW to aerobic wastewater treatment sludges which are particularly difficult to dewater using conventional equipment. The bench scale filtration experiments produced cakes with solids contents of 35-46 wt% using EDW, compared with 24-30 wt% using pressure filtration alone. This paper : • describes how the dewatering results were achieved; •identifies a relationship between moisture removal limits by EDW and the forms of water within the sludge; •shows the results of preliminary attempts to mathematically model the EDW process