In-situ treatment of organic aquatic sediments is carried out by e.g. rotary agitation creating suspension locally, with chemical and bacterial additions

摘要

Mechanical, chemical and bacterial treatment breaks down and transforms organics in the deposits. A particulate suspension is created in a body of water (in a skip-like container). The mixture is conditioned and inoculated, adding minerals and bacteria to react with the organic matter. The mixture re-settles onto the aquatic bed, where treatment by microorganisms continues. An Independent claim is included for the equipment, comprising a floating section and a submerged section dragged on skids (27), loosely resembling a skip container. Also included are a guard (28), rotor agitator (30), deflector (29), injectors (16) for additives, gas injectors, bacterial injectors (25) and water injectors (11). Preferred Features: Mechanical and chemical treatment stages are combined. Organics micronized are enriched chemically and treated with gas. Indigenous aerobic bacteria of the bed and of the aquatic medium are employed in the final (re-settled) bacterial stage, to treat the conditioned mixture. Selected micro-organism cultures are injected. Aerobic or indigenous bacteria from the treatment zone and/or cultured bacteria are employed. The machine has a rotor and deflectors suspending the material. Mechanical agitation is only employed in aquatic media requiring no chemical treatment stage. Further equipment is detailed. A range of mechanical and hydromechanical devices is suggested for the agitator.