Method for non-waste purification of a filtrate of solid household wastes landfills and industrial sewages

A method for non-waste purification of a filtrate of solid household wastes landfills and industrial sewages, comprising the steps of:

• changing a pH level of the filtrate in an aqueous solution;
• separating a residue from the aqueous solution;
• performing filtration of the aqueous solution, including adding, so as to reduce, the pH level of the filtrate to 2 to 3, 30% or more concentrated sulfuric acid solution;
• settling the filtrate for 15-90 minutes, and separating a formed residue from the aqueous solution;
• adding, so that the pH of the aqueous solution is increased to 8 to 9 calcium lime, and treating a suspension thereof in the aqueous solution with ultrasound;
• settling the aqueous solution for 15-90 minutes with simultaneous exposure of the aqueous solution to ultrasound and separating a residue from the aqueous solution;
• saturating the aqueous solution using a pure CO2 or a mixture thereof with other gases;
• increasing the pH of the aqueous solution to 10 to 12 by adding the calcium lime and treating a suspension thereof in the aqueous solution with ultrasound,;
• settling the aqueous solution for 15-90 minutes with simultaneous exposure to the ultrasound;
• reducing the pH of the aqueous solution to 8 to 9 by applying electrolysis to the aqueous solution;
• oxidizing a remainder of organic compounds and calcium ions of the calcium lime in the aqueous solution by adding 30% to 50% aqueous hydrogen peroxide solution to the aqueous solution with simultaneous exposure to ultrasound, settling the aqueous solution, and filtering the aqueous solution through a filter that separates solid particles having a size over 0.1 micron from the aqueous solution;
• removing ions from the aqueous solution by filtering the aqueous solution on a reverse osmosis filter or on electrodialysis equipment, with filtrate thereof being deposited on a reverse osmosis membrane or residue thereof being concentrated on the electrodialysis equipment, respectively.