ELECTRO-OSMOTIC DEWATERING BEHAVIOR ANALYSIS FOR ACTIVATED SLUDGE

摘要

In this article, in order to improve the electro-osmotic dewatering efficiency, this dewatering process was analyzed precisely, from the viewpoint of water content and voltage drops distribution in sludge cake under constant voltage. The results show that the water content decreased accounting for about 40% of the whole sludge cake. Due to the influence of local water content on electric resistance near the anode, this resulted in higher water content near the cathode than initially, in later dewatering period. So, a new method was proposed to decrease the water content near the cathode. Application of absorbent water materials underneath the cathode provided more promising results than those of electro-osmotic dewatering only.