Purification Efficiency on the Granulometric Composition

In this work, studies were carried out on sorption treatment in dynamic conditions of the model solution of copper ions (II) sorbing material obtained by the treatment of sediment biological wastewater treatment with low-temperature pyrolysis. Research conducted for fractions with particle sizes less than 0.5 mm and 0.5-1 mm, 1-2 mm, 2-3 mm, 3 mm or more. Dynamic sorbing of the model solution was carried out through a product of pyrolysis with a certain size of particles filled in a column with a diameter of 10 mm, the mass of sorbent was 2 grams, the height of filling the column 10-12 cm. The speed at which the model solution is filtered through the column depends on the size of the particles of the sorption material. As the particle size increases, the filtration rate increases, but the efficiency of copper ions removal decreases. Degree of sorption of copper ion solution with initial concentration of 1028 mg/dm(boolean AND)3 amounted to 94.6% for fraction of pyrolysis product with particle size 1-2 mm, 91.6% - less than 0.5 mm, 92.1% - 0.5-1 mm, 91.2% - more than 2 mm respectively. To compare the degree of sorption for BAU-grade coal amounted to 93.1%. Speed of filtering for BAU-grade coal amounted to 10 mL/min. The size of the particles of the dispersal phase of the original model solution and filter after sorption was determined by dynamic light scattering (DLS) using the NanoBrook Omni analyzer. According to the results of the study, the model solution is a polydisperse system with particle sizes from 145 to 224 nm and 6450 to 8640 nm. The size of the particles of the dispersal phase of the filter after passing through the sorbing material with the size of particles 1-2 mm is in the area from 122 to 177 nm and from 1280 to 2380 nm. The peaks of particle size in the filter after passing through the sorbent (a fraction of 1-2 mm) are shifted downwards, indicating that smaller particles remain in the filter after cleaning. This is confirmed by the increase in copper ions.