METHOD OF AUTOMATIC CONTROL OF PROCESS OF INDUSTRIAL WASTE WATER PURIFICATION Russian patent published in 2004 - IPC

FIELD: industrial waste water purification. SUBSTANCE: the invention presents a method of automatic control of process of industrial waste water purification and is dealt with automation of the process of purification of the industrial enterprises waste water in particular. The method provides for neutralization of the industrial waste water by introduction in the waste water of an acid solution or an alkali liquor to bring it to a set value of pH. The acid solution or an alkali liquor is fed into a collector of industrial plant effluents. Depending on their concentration the effluents are fed either in an electrical coagulator or in a galvanic coagulator for purification. Regulation of quality of the effluents purification in the electrical coagulator is exercised by regulation of current with due account of the effluents electrical conductance. After that they carry out the settling process by means of an overflow of the effluents from one settler into another with the help of the electrical damper plates. To speed-up the settling process polyacrylamide is introduced and the insoluble sediments are passed through the desalination filters for purifying from salt and through the fine filters. Then the sediments are dehydrated and purified water is fed in a line of the galvanic coagulator for further purification. The given method allows to improve the quality of the industrial waste water purification for its utilization in the industrial turnaround cycle. EFFECT: the invention allows to improve the quality of purification of the industrial waste water making it possible for repeated implementation in the production process. 1 dwg