Scalable floating micro-aeration unit, devices and methods

A system for sulfide removal from and treatment of wastewater, comprising:

• a container configured to hold a fluid including a wastewater, wherein the container is interfaced with an inlet line through which the fluid can flow into the container and an outlet line through which, once pre-treated, the fluid can flow out of the container as a pre-treated fluid;
• and
• a plurality of micro-aeration devices configured to float on the fluid, wherein each of the micro-aeration devices comprises (i) a manifold structure including one or more openings to flow air out of an interior of the manifold structure, and (ii) one or more support structures connected to the manifold structure, wherein the one or more support structures is configured to float the manifold structure over a surface of the fluid to prevent the manifold structure to not be from being in direct contact with the fluid in the container,
• wherein the plurality of micro-aeration devices is configured to expel the air from the one or more openings of the manifold structure at the fluid to remove sulfide from the fluid by micro-aeration, such that the air expelled by the micro-aeration devices is capable of providing an amount of oxygen gas within a shallow depth of the fluid between 0 cm to 5 cm from a top surface of the fluid, and wherein the amount of the oxygen gas in the air expelled from the plurality of micro-aeration devices within the shallow depth of the fluid comprises less than 0.1 mg/L of oxygen (O2).

A system for sulfide removal from and treatment of wastewater, comprising:

• a container configured to hold a fluid including a wastewater, wherein the container is interfaced with an inlet line through which the fluid can flow into the container and an outlet line through which, once pre-treated, the fluid can flow out of the container as a pre-treated fluid;
• and
• a micro-aeration device configured to float on the fluid, the micro-aeration device comprising (i) a manifold structure including one or more openings to flow air out of an interior of the manifold structure, and (ii) one or more support structures connected to the manifold structure, wherein the one or more support structures is configured to float the manifold structure over a surface of the fluid to prevent the manifold structure from being in direct contact with the fluid in the container,
• wherein the micro-aeration device is configured to expel the air from the one or more openings of the manifold structure at the fluid to remove sulfide from the fluid by micro-aeration, such that the air expelled by the micro-aeration device is capable of providing an amount of oxygen gas within a shallow depth of the fluid between 0 cm to 5 cm from a top surface of the fluid, and wherein the amount of the oxygen gas in the air expelled from the micro-aeration device within the shallow depth of the fluid comprises less than 0.1 mg/L of oxygen (O2).