Adhesion is one of the main features of sewage sludge. This paper aims at reducing sludge-to-wall adhesion through formation of a water layer induced by boundary electro-osmotic pulse (BEOP) which is characterized by distributing anodes and cathodes on one surface and exerting a pulsating current. The effects of the related parameters, including current intensity, exerting time, frequency, duty cycle (DTC), and the ratio of cathodic surface area to anodic surface area (C/A), on the adhesive stress of sewage sludge with different moisture content were thoroughly studied. The results indicated that, under the optimal conditions of BEOP, the adhesive stress of sludge with moisture content of 35%, 45%, 60% and 70% was reduced by 40.4%, 54.5%, 31%, and 24.4%, respectively. The migrations of water, ions and organic matters were also investigated to explore the functional mechanism of BEOP. The results showed that the water migrated from the anode side to the cathode side, whereas the organic matters migrated in the opposite direction. The increment of the sludge moisture content on the cathode surface was reduced with the increase of distance away from the anode. Based on theoretical modeling, the distributions of current density and temperature in sludge cake were obtained. The current flowed from anode to cathode and decayed quickly with the increase of the flowing distance, which well explained the moisture content distribution in sludge cake.

附着力是污水污泥的主要特征之一。本文旨在通过边界电渗流脉冲（BEOP）引起的水层的形成来减少污泥与壁之间的粘附，其特征是将阳极和阴极分布在一个表面上并施加脉冲电流。电流强度，施加时间，频率，占空比（DTC）和阴极表面积与阳极表面积之比（C / A）等相关参数对不同含水量污泥的黏附应力的影响经过深入研究。结果表明，在最佳的BEOP条件下，含水率35％，45％，60％和70％的污泥的黏附应力分别降低了40.4％，54.5％，31％和24.4％。水的迁移，还对离子和有机物进行了研究，以探索BEOP的功能机理。结果表明，水从阳极侧向阴极侧迁移，而有机物沿相反方向迁移。随着远离阳极的距离的增加，阴极表面污泥水分含量的增加减少。基于理论模型，得到了污泥饼中电流密度和温度的分布。电流从阳极流向阴极，并随着流动距离的增加而迅速衰减，这很好地解释了污泥饼中水分含量的分布。随着远离阳极的距离的增加，阴极表面污泥水分含量的增加减少。基于理论模型，得到了污泥饼中电流密度和温度的分布。电流从阳极流向阴极，并随着流动距离的增加而迅速衰减，这很好地解释了污泥饼中水分含量的分布。随着远离阳极的距离的增加，阴极表面污泥水分含量的增加减少。基于理论模型，得到了污泥饼中电流密度和温度的分布。电流从阳极流向阴极，并随着流动距离的增加而迅速衰减，这很好地解释了污泥饼中水分含量的分布。