Effectual sludge dewatering system by electro-osmosis method.

Sludge Dewatering by Impulse Drying

An innovative and energy efficient sludge dewatering technology has been developed. The technology, impulse drying, involves briefly contacting the sludge under pressure with a heated surface. A unique feature of impulse drying is that the majority of moisture removal occurs as lipid water. A pilotand laboratory-scale demonstration was performed on low ash primary paper mill sludge. The pilot-s...

Section Vi Review of Sludge Dewatering Techniques Vi-1 Section Vi Review of Sludge Dewatering Techniques

Observations on Electro-Osmosis.

as regards thle ilnumber and duration of the observa-itiolls possil)le, als w\ell as in coiise(lueCiee of the relatively low streingtli of cuirrentt necess.arily employed when it was desired to preserve uiiiiijured the vitality of tlle liviing surface to which the currenit wi-as applied. Sinice living mnattei is largely colloidal it d-asdeterminied to study a,s far as p)ossible electroosmosis i...

Induced - charge electro - osmosis By TODD

We describe the general phenomenon of ‘induced-charge electro-osmosis’ (ICEO) — the nonlinear electro-osmotic slip that occurs when an applied field acts on the ionic charge it induces around a polarizable surface. Motivated by a simple physical picture, we calculate ICEO flows around conducting cylinders in steady (DC), oscillatory (AC), and suddenly-applied electric fields. This picture, and ...

Effect of electrolytes content on the electro-osmotic dewatering of agro-industrial sludge

The agro-industrial sludge, tested in this work, comes from a biscuit factory (France). Initially, it contains 3 % w/w of dry matter. The actual treatment by centrifugation dewaters it to 13 % w/w of dry matter. Electroosmotic dewatering under pressure (EOD) was investigated, as an alternative technology of mechanical treatment, to improve dewatering. This electrical treatment efficiency depend...