Container-type apparatus with a suspended particle system for wastewater treatment

A container-type apparatus for wastewater treatment, comprising

• two or more interconnected facultative biological reaction zones, said two or more facultative biological reaction zones including any one or combination of at least one anaerobic zone, and at least one anoxic zone and at least one aerobic zone, each of said facultative biological reaction zones including a fluidized particle system comprised of a combination of light particles and heavy particles, said light and heavy particles having microorganisms located on surfaces thereof, the light particles initially floating on top of the wastewater as a density of said light particles is lower than a density of the wastewater, the heavy particles initially sitting along a bottom of the wastewater as a density of said heavy particles is higher than the density of said wastewater;
• one of the biological reaction zones being including an inlet connected to a source of wastewater;
• and
• a gas injection mechanism for injecting only gas into enclosures containing said suspended particle system to induce fluidization of said particles in each enclosure, said gas injection mechanism being located near a bottom of said enclosures to inject gas upwardly into said wastewater containing said any one or combination of light particles and heavy particles, and wherein by injecting gas from near the bottom light particles move downward while heavy particles move upward and such that light particles they are fluidized, and the heavy particles are fluidized, and wherein said gas injection mechanism is configured so that the gas flows upwardly in said enclosures continuously or intermittently;
• and
• wherein the gas injected upwardly into the wastewater containing the light and heavy particles causes
• the light particles to be fluidized by being dispersed downwards and uniformly suspended and distributed in the wastewater and not undergoing directional flow circulation, and
• the heavy particles to be fluidized by being dispersed upwards and uniformly suspended and distributed in the wastewater and not undergoing directional flow circulation;
• and
• a container having several of said enclosures contained therein, said container including a wastewater input, said several enclosures contained within said container being interconnected so that wastewater flows into the container and into the several enclosures, wherein both light and heavy particles are present in each of said several enclosures and each enclosure corresponding to a separate biological reaction zone.