The invention provides an integrated water treatment system suitable for use in the treatment of contaminated water, wastewater, potable water, aquaculture, industrial water and polluted water bodies. An integrated water treatment system according to at least one embodiment of the invention comprises a plurality of modules adapted to float in a body of water integrating a plurality of different attached growth biofilm media types positioned within a plurality of water flow paths and circulations. The conditions provided by a multiple of media types and plurality of flow paths creates a multiplier effect increasing the number of treatment zones and an increased diversity of interconnected treatment process zone types. Embodiments of the invention provide a diversity of conditions and biological habitats establishing a poly-culture of producers, consumers and higher organisms in an ecosystem of biological treatment processes, with complex metabolic pathways and food chains increasing treatment efficiency and the range of pollutants which may be effectively treated. Modules comprised in the system are adjustable in operational rate, series, and timing, and are movable in configuration and/or proximity providing a new type of adaptable, re-configurable and adjustable multi-zone, integrated ecological biofilm water treatment system.

The present inventions are generally directed to surface aerators for aerating water or wastewater in a basin, lagoon or tank. In particular, the present inventions relate to flow straightening vanes incorporated into an aerator volute tube that straighten the intake and discharge flow thereby minimizing or eliminating torque on the unit and on the mooring components of the aeration assembly. The present inventions also improve mixing and aeration.

The present inventions are generally directed to surface aerators for aerating water or wastewater in a basin, lagoon or tank. In particular, the present inventions relate to flow straightening vanes incorporated into an aerator volute tube that straighten the intake and discharge flow thereby minimizing or eliminating torque on the unit and on the mooring components of the aeration assembly. The present inventions also improve mixing and aeration.

A submersible aeration equipment (10) for wastewater treatment in which partial vacuum is generated by the rotation of the impellers (22) within the water, which results in the formation of micro-bubbles. The submersible aeration equipment (10) includes a spring-based air intake valve (18) that can control the flow of air through a hollow shaft (12), wherein the opening of the spring-based air intake valve (18) is based on the amount of vacuum in the hollow shaft (12).

A submersible aeration equipment (10) for wastewater treatment in which partial vacuum is generated by the rotation of the impellers (22) within the water, which results in the formation of micro-bubbles. The submersible aeration equipment (10) includes a spring-based air intake valve (18) that can control the flow of air through a hollow shaft (12), wherein the opening of the spring-based air intake valve (18) is based on the amount of vacuum in the hollow shaft (12).

An orbital wastewater treatment system includes a tank assembly, at least one impeller, at least one flow-diversion mechanism, at least one actuator, optionally at least one sensor disposed in the tank assembly, and a control unit. The tank assembly has three treatment zones and pairs of passages between the first zone and the second zone and between the second zone and the third zone. The impeller disposed in the tank assembly moves mixed liquor under process about the tank assembly. Multiple flow-diversion mechanisms disposed at the passages between the zones of each pair control process conditions pursuant to a predetermined schedule and/or at least partially in accordance with input from the one or more sensors.

A method and apparatus for injecting a gas into a liquid in which a rotating helical impeller within a draft tube submerged in the liquid creates a liquid flow within the draft tube. Gas bubbles are injected into the draft tube either above or below or alongside the helical impeller or in all three locations. The liquid is drawn into the draft tube with a superficial velocity greater than a substantially uniform terminal ascent velocity of the gas bubbles to allow entrainment of undissolved gas bubbles in the bulk liquid into the liquid being drawn into the draft tube. The gas bubbles are injected with a uniform diameter of between about 10.0 microns and about 1.0 millimeters. The small bubble size enhances the dissolution of the gas into the liquid and also allow the entrainment of the gas into the liquid being drawn into the draft tube.

A method and apparatus for injecting a gas into a liquid in which a rotating helical impeller within a draft tube submerged in the liquid creates a liquid flow within the draft tube. Gas bubbles are injected into the draft tube either above or below or alongside the helical impeller or in all three locations. The liquid is drawn into the draft tube with a superficial velocity greater than a substantially uniform terminal ascent velocity of the gas bubbles to allow entrainment of undissolved gas bubbles in the bulk liquid into the liquid being drawn into the draft tube. The gas bubbles are injected with a uniform diameter of between about 10.0 microns and about 1.0 millimeters. The small bubble size enhances the dissolution of the gas into the liquid and also allow the entrainment of the gas into the liquid being drawn into the draft tube.

The present disclosure relates to a method for treating high-concentration fermentation by-products produced in an amino acid fermentation process.

The method of the present disclosure for treating high-concentration fermentation by-products produced in an amino acid fermentation process includes: a decomposition step S10 of introducing fermentation by-products and a thermophilic aerobic microorganism into a decomposition tank provided with a heating device; and a separation step S20 of separating sludge and a remainder produced by reaction between the thermophilic aerobic microorganism and the fermentation by-products in the decomposition step S10.