In a method for regulating at least two fluids, a fluid feed flow Q is divided into n parts, the sum of the n parts being equal to Q, each of the n parts is sent to one of n processing units, each of the n processing units produces at least one processed flow, at least one processed flow of a first of the processing units is regulated by control means in order to keep the flow thereof constant at a value Q1 in nominal operation, at least one processed flow of a second of the processing units is regulated by control means in order to keep the pressure thereof constant in nominal operation and, in the event of a reduction of the feed flow Q, in reduced feed operation, if, preferably only if, the flow of the flow processed in the second processing unit of step v) drops and thus reaches a first minimum flow threshold, a processed flow in the first processing unit is regulated such that the processed flow having a value Q1 in nominal operation is reduced to a value less than Q1.

In a method for regulating at least two fluids, a fluid feed flow Q is divided into n parts, the sum of the n parts being equal to Q, each of the n parts is sent to one of n processing units, each of the n processing units produces at least one processed flow, at least one processed flow of a first of the processing units is regulated by control means in order to keep the flow thereof constant at a value Q1 in nominal operation, at least one processed flow of a second of the processing units is regulated by control means in order to keep the pressure thereof constant in nominal operation and, in the event of a reduction of the feed flow Q, in reduced feed operation, if, preferably only if, the flow of the flow processed in the second processing unit of step v) drops and thus reaches a first minimum flow threshold, a processed flow in the first processing unit is regulated such that the processed flow having a value Q1 in nominal operation is reduced to a value less than Q1.

A wastewater evaporation system for spray evaporating water comprising: a wastewater feed inlet; a pump, wherein the wastewater feed inlet is fluidly connected to the pump and wherein the pump is fluidly connected to an inlet of a manifold; a drip orifice, wherein the manifold is fluidly connected to the drip orifice; a container, wherein an upper portion of the container is enclosed with a demister element; a packing and/or tray system disposed within the container, wherein the drip orifice discharges water droplets onto the packing and/or tray system; a discharge outlet, wherein a bottom of the container is fluidly connected to the discharge outlet; and an air system, wherein the air system discharges air flow counter to the water droplets from the drip orifice is disclosed. A method of spray evaporating water while limiting emission of particles regulated as pollutants is also disclosed.

A wastewater evaporation system for spray evaporating water comprising: a wastewater feed inlet; a pump, wherein the wastewater feed inlet is fluidly connected to the pump and wherein the pump is fluidly connected to an inlet of a manifold; a drip orifice, wherein the manifold is fluidly connected to the drip orifice; a container, wherein an upper portion of the container is enclosed with a demister element; a packing and/or tray system disposed within the container, wherein the drip orifice discharges water droplets onto the packing and/or tray system; a discharge outlet, wherein a bottom of the container is fluidly connected to the discharge outlet; and an air system, wherein the air system discharges air flow counter to the water droplets from the drip orifice is disclosed. A method of spray evaporating water while limiting emission of particles regulated as pollutants is also disclosed.

An impeller design is provided for use in evaporating water from an ambient water body. The impeller includes a hub and a plurality of impeller blades. The blades have one or more profiles that correspond to certain profiles characterized by the National Advisory Committed for Aeronautics parameters known as NACA 4 parameters. One or more blade angles also may more specifically identify the blade profiles. The impeller blades also may be identified by a plurality of profiles on a given blade, preferably including a base profile and a tip profile. The impeller optionally but preferably is made of a fiberglass material. In preferred embodiments it constitutes an integrated unit, such as a unitary molded or cast unit. It may be coated by a suitable corrosion-resistant coating, for example, such as a clear coat or gel coat. Various features of the impeller hub also are disclosed. An impeller system also is disclosed. The system includes an impeller as described above and means for mitigating non-longitudinal flow in the air flow channel in which the impeller caused air movement. The means for mitigating non-longitudinal flow preferably includes a plurality of guide vanes disposed downstream of the impeller.

An impeller design is provided for use in evaporating water from an ambient water body. The impeller includes a hub and a plurality of impeller blades. The blades have one or more profiles that correspond to certain profiles characterized by the National Advisory Committed for Aeronautics parameters known as NACA 4 parameters. One or more blade angles also may more specifically identify the blade profiles. The impeller blades also may be identified by a plurality of profiles on a given blade, preferably including a base profile and a tip profile. The impeller optionally but preferably is made of a fiberglass material. In preferred embodiments it constitutes an integrated unit, such as a unitary molded or cast unit. It may be coated by a suitable corrosion-resistant coating, for example, such as a clear coat or gel coat. Various features of the impeller hub also are disclosed. An impeller system also is disclosed. The system includes an impeller as described above and means for mitigating non-longitudinal flow in the air flow channel in which the impeller caused air movement. The means for mitigating non-longitudinal flow preferably includes a plurality of guide vanes disposed downstream of the impeller.

A system for concentrating wastewater with a heated gas is disclosed wherein a heated gas is directed into a first wastewater heating chamber at a first velocity and a first wastewater stream is directed into the first wastewater heating chamber. A second wastewater heating chamber is coupled to the first wastewater heating chamber and in fluid communication with the first wastewater heating chamber. A second wastewater stream is directed into the second wastewater heating chamber at a velocity that is greater than the velocity of the heated gas directed into the first wastewater heating chamber.

A system for concentrating wastewater with a heated gas is disclosed wherein a heated gas is directed into a first wastewater heating chamber at a first velocity and a first wastewater stream is directed into the first wastewater heating chamber. A second wastewater heating chamber is coupled to the first wastewater heating chamber and in fluid communication with the first wastewater heating chamber. A second wastewater stream is directed into the second wastewater heating chamber at a velocity that is greater than the velocity of the heated gas directed into the first wastewater heating chamber.

A method and apparatus for recovering distilled water from wastewater. The method and apparatus evaporates water vapor from a wastewater stream into a moving airflow, collects collecting distilled water from the water vapor, and powers the moving airflow and the collecting distilled water with a thermoelectric generator. The apparatus includes a self-regenerative distillation unit, with an evaporating channel, a condensing channel, and a distilled water outlet. The thermoelectric generator includes a hot shoe side in combination with the wastewater stream, and a cold shoe side in combination with the distilled water outlet. The thermoelectric generator powers a fan or blower connected to the evaporating channel and/or a water pump connected to the distilled water outlet.

A method and apparatus for recovering distilled water from wastewater. The method and apparatus evaporates water vapor from a wastewater stream into a moving airflow, collects collecting distilled water from the water vapor, and powers the moving airflow and the collecting distilled water with a thermoelectric generator. The apparatus includes a self-regenerative distillation unit, with an evaporating channel, a condensing channel, and a distilled water outlet. The thermoelectric generator includes a hot shoe side in combination with the wastewater stream, and a cold shoe side in combination with the distilled water outlet. The thermoelectric generator powers a fan or blower connected to the evaporating channel and/or a water pump connected to the distilled water outlet.