The subject of the invention is a dual-chamber reactor for magnetic assisting of the chemical processes involving gases, liquids and solids, and chemical or biochemical reactions carried out by microorganisms equipped with two mixing chambers, the generator of rotating magnetic field, a housing with a top cover and a bottom with connecting pieces, characterized in that, it has a central cylindrical partition (2), which forms inside the reactor (1), the two, cylindrical (3) and an annular (4) chambers fixed to the cone-shaped bottom (5). The reactor has an outer cylindrical housing (6), wherein the generator (7) of the rotating magnetic field is placed, located between the top cover (8) and cone-shaped bottom (5). The outer cylindrical housing (6) is equipped with inlet pipe (9) and outlet pipe (10) with the thermal medium. The cone-shaped bottom (5) has a central outlet pipe (11), a top cover (8) has inlet pipe (12), for supplying additional chemicals into the reactor. Reactor (1), under the generator (7) has at least one inlet pipe (13) for the reaction medium.
The system of reactor described above, is characterized in that the central outlet pipe (11) of the reactor (1) is connected to the inlet of the tank (28), which outlet is connected to the first circulation pump (30), wherein the tank (28) has a heating jacket (31).