Ecological system for the removal of suspended organic salts from industrial effluents

摘要

This system makes use of the principle of electrolysis to purify industrial waste water. Two electrical ion exchangers, one anionic and one cationic, consisting of two titanium electrodes set at a distance of 3 mm and separated by a porous septum which permits ion exchange are used. The water which passes between the septum and the electrode must travel at least 10 m over its surface to provide satisfactory exchange. The water enters the first anionic exchanger where it loses most of the anions, and it then goes to a clarifier where the organic cations precipitate out because of the very high pH; from here it passes to a cationic exchanger where it loses some of the cations and then enters a second clarifier where the organic anions are precipitated out because of the low pH. The salts concentrated in the two exchangers and the anionic and cationic sludges are placed in a silica fluidised bed furnace held at 800 degree C and reactions converting everything into insoluble and therefore non- polluting silicates take place within it. IMAGE