Facility for removal of materials and/or polluting substances contained in watercourses

A facility for removing materials or polluting substances contained in watercourses, the facility including a watercourse comprising:

• a watercourse bed;
• two banks;
• a first portion, wherein the first portion comprises a sandbox arranged on the watercourse bed, and a floating garbage fence downstream from the sandbox and substantially transverse to the watercourse,
• wherein the first portion is configured to remove large materials from the watercourse;
• a second portion, wherein the second portion comprises a metallic structure transverse to the watercourse and suspended above the watercourse,
• wherein the metallic structure comprises at least a first, a second, and a third curtain, each curtain being separated from another by at least one homogenization diffuser,
• wherein the first curtain is configured to inject coagulants into the watercourse,
• wherein the second curtain is configured to inject polymers into the watercourse, such that an aggregation of particles in suspension forms in the watercourse, and
• wherein the third curtain is configured to inject air particles into the watercourse, thereby generating microaeration, such that at least a portion of the aggregation of particles float substantially to the surface of the watercourse;
• a third portion, wherein the third portion comprises at least one longitudinal, flexible barrier comprising a synthetic membrane, the barrier being configured to concentrate the aggregation of particles, and including a plurality of dredging modules extending along at least a first bank of the two banks,
• the flexible barrier further comprising a sludge retainer configured to capture and remove the concentrated aggregation of particles;
• and
• a pump configured to pump the concentrated aggregation of particles from the watercourse to a separate area for dehydration or recycling as a byproduct,
• wherein the first, second, and third curtain are configured to be automatically activated, and
• wherein the metallic structure comprises a plurality of arms configured to pivot or rotate along the banks, such that the metallic structure may by vertically and horizontally displaced, thereby becoming partially or completely removed from the watercourse via angular displacement.