Influence of Filter Cloth on the Cathode on the Electroosmotic Dewatering of Activated Sludge

Integrated treatment of municipal sewage sludge by deep dewatering and anaerobic fermentation for biohydrogenproduction

“…The pressure of 1.5 MPa was applied to filter press with the addition of optimal chemical composition, and the moisture content of 54.0 % was obtained (Zhai et al 2012). The electroosmotic dewatering at 7 kPa was employed, and the water content in the sludge decreased to 60 % (Yu et al 2010). Different conditioners, devices, and sludge could affect the pressure used in sludge dewatering.…”

“…where m 0 is the initial total mass of the sludge, and m s is the mass of the sludge drying in oven at 103-105°C for 24 h (the standard method) (Yu et al 2010). The volume of biogas was measured by displacing saturated saline solution.…”

Aerobic granules cultivated and operated in continuous-flow bioreactor under particle-size selective pressure

“…As shown in Table 2, the water contents of granules in reactors #1, #2 and #3 were 96.2%, 96.1% and 95.2%, respectively, all of which were lower than those of flocculent sludge, at more than 99% (Sun et al, 2010;Feng et al, 2009;Yu et al, 2010). By comparing aerobic granules in the three reactors, the water content of aerobic granules cultivated by PSCM (reactor #3) was found to be the lowest, which might relate to the large particle size and compact structure of granules in reactor #3.…”

Assessment of pressure-driven electro-dewatering as a single-stage treatment for stabilized sewage sludge

“…Therefore, dewatering sludge to a higher DS content for disposal means great saving for the WWTP operators [11]. This is especially true for the case of sludge used for land application [3].…”

“…Citeau et al have shown that the use of a DC power supply at constant electric potential, instead of constant electric current, allows to achieve a higher DS content [20] and a better control of the temperature at the end of the tests, preventing from ohmic heating [17]. The EDW process has also been used as post-treatment to further dewater the sludge samples [8,11,14,[24][25][26]. Visigalli et al [27] tested sludges from different treatment processes and found that the EDW can achieve higher final DS than the conventional mechanical dewatering processes.…”