Abstract: A device for the electrical discharge processing of a non-conducting liquid including at least one alternating succession of essentially rectangular, parallel, and spaced-apart n electrode plates and n+1 dielectric plates, with n?2, the electrode plates being numbered from 1 to n; the device includes a series of first electrical connectors electrically connected to all even numbered electrode plates in proximity to a first pair of diametrically opposite corners; and the device includes a series of second electrical connectors electrically connected to all odd numbered electrode plates in proximity to a second pair of diametrically opposite corners. Further, a method for electrical discharge processing of a non-conducting liquid using the device is disclosed.