ELIMINATION OF METHYLENE BLUE BY MEANS OF AN ENVIRONMENTALLY FRIENDLY METHOD COMBINING ADSORPTION-BIOFLOCCULATION

摘要

The invention concerns a method for treating coloured water by means of an adsorption-flocculation method using a product extracted from cactus paddles and without using chemical products normally used for treating water, comprising the following steps: - pretreating the cactus paddles by washing and eliminating the spines, then extracting the product in question from said cladode, - preparing samples of water having a high concentration of colourant, then treating same with the bioflocculant in question, adding clay as the adsorbent, - after the treatment has been completed, leaving the solution to settle and recovering clear water and a sludge containing biodegradable natural products.