Electro-chemistry applied to sewage disposal,

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ...placed between the electrodes. They serve a two-fold purpose: (1) They keep the electrolyte passage free from debris and (2) Act as mechanical depolarizers by preventing the concentration of the products of electrolysis in the vicinity of the electrodes, thus reducing the electrical energy required for the electrolysis.‘ 1 This necessitates the renewal of the sewage at the surfaces of the electrodes. Part IV. The Apparatus and Appurtenances of the Electrolytic-Lime Process THE ELECTROLYTIC APPARATUS. (U. S. Patent 1186106.) The apparatus used for the practical application of this process consists of a horizontal cypress tank 27’ 3" long, 3’ wide and 2’ 9" high. The sides and bottom are securely bolted together and reinforced with 2" channel irons. The top is made in two sections, securely bolted to the sides and made water tight with a rubber gasket. These sections may be removed to insert the electrodes, and for cleaning and inspection. The top is also provided with vents for the removal of the gaseous products of electrolysis, while the bottom contains a series of valves which serve to remove any sediment that may collect in the tank. Plate I gives a general view of the apparatus in process of construction, with one section of the top removed showing one tier of electrodes in position. The tank is divided into 11 spaces, each space containing two banks of electrodes mounted one above the other. Each bank consists of 48 mild steel plates, %" thick and rectangular in shape, 10" x 16", spaced %" apart. In each %" space between the plates two paddles or agitators of non-conducting material are revolved, being attached to shafts passing through holes punched in the plates to...