ABSTRACT
B e n e fits o f ap p ly in g e le c t r ic f ie ld s fo r s o l id / l iq u id sep ara tio n in urban sewage s lu d g es . E le c tro -c h e m is try o f in te r fa c e s and d e f in it io n of e le c t r o - k in e t ic e f fe c ts . Basic laws o f e le c tro p h o re s is and o f e le c tro -o s m o s is . A p p lic a tio n o f e le c t r ic f i e l d s : - to speed up sed im entatio n and g ra v ity th icke n in g o f sludges; - to co ncentra te sludges by f i l t e r i n g w ith o u t any cake prod uction ; - to dewater l iq u id sludges u n t i l a s o lid res id ue is produced.
