The present invention relates to a method for recovering copper from fishing net waste. The method according to the invention comprises the step of cleaning the screen with a cleaning solution to maximize the removal of antibiotic coatings and other impurities from the surface of the screen. The cleaning solution is water, and sodium hydroxide is added to the water to increase the cleaning efficiency so that the concentration in the water is up to 20%. The suspension of the washing liquid, sludge and other impurities generated in the washing step is subjected to a separation step. The sludge obtained in the separation step is subjected to a dissolution step in an acidic medium. Strong mineral acids, such as sulfuric acid, nitric acid, hydrochloric acid, mixtures of strong mineral acids, mixtures of one or more strong mineral acids and hydrogen peroxide, etc., are selected as acidic media. Next, the undissolved sludge is separated from the solution of copper ions in the acidic medium, and the aqueous solution of copper ions in the acidic medium is subjected to electrolysis to remove copper having a purity of 94% or more. Elements are deposited on the anode. The undissolved residual sludge is optionally advanced to a heat treatment in the reactor. Residual paraffins and copolymers are removed at temperatures ranging from 500C to 900C. The remaining ash contains up to 30% by weight, based on the weight of the ash, of copper compounds, especially in the form of copper oxide (II) CuO, copper oxide (I) Cu 2 O and copper phosphate Cu (H 2 PO 4) 2, The form of Na6Cu9 (PO4) 8 contains less. This ash is then subjected to dissolution in an acidic medium and subsequent steps of the method according to the invention. The method proposed by the present invention improves the method of recycling net waste to recover not only pure polyamide but also elemental copper from the net. Elemental copper in a sufficiently pure form, in addition to being a useful raw material, reduces the a
