An apparatus for evaporating waste water and reducing flue gas acid gas emissions includes an evaporator device configured to receive a portion of flue gas emitted from a combustion unit and waste water for direct contact of the flue gas with the waste water to cool and humidify the flue gas, and to evaporate the waste water. An alkaline reagent as well as activated carbon may be mixed with the waste water prior to waste water contact with the flue gas. Solid particulates that are dried and entrained within the cooled and humidified flue gas can be separated from the flue gas via a particulate collector.

[Problem]

To provide a microorganism deodorizing device capable of sufficiently exhibiting a decomposition-deodorization function while suppressing an increase in manufacturing cost, even in a large-scale device including a large-sized deodorizing tank.

[Solution]

A deodorizing tank 1 of a microorganism deodorizing device 1A forms an airflow passage 20 through which air passes from a chamber unit 3 to an opening portion 19; and the airflow passage 20 is provided with a deodorizing unit 5 in which a foam material 17 is filled, a ventilation resistance layer 4 arranged close to or adjacent to the deodorizing unit 5 and configured to increase ventilation resistance of the air flowing through the airflow passage 20, and a chamber unit 3 arranged close to or adjacent to the deodorizing unit 5 and/or the ventilation resistance layer 4 as a chamber which temporarily stores the air fed to the deodorizing tank 1; and the air is fed to the deodorizing unit 5 in a state of being spread in the chamber unit 3 over a substantially entire surface of the deodorizing unit 5 as a result of that the ventilation resistance of flow of the air flowing through the airflow passage 20 is increased by the ventilation resistance layer 4.

[Problem]

To provide a microorganism deodorizing device capable of sufficiently exhibiting a decomposition-deodorization function while suppressing an increase in manufacturing cost, even in a large-scale device including a large-sized deodorizing tank.

[Solution]

A deodorizing tank 1 of a microorganism deodorizing device 1A forms an airflow passage 20 through which air passes from a chamber unit 3 to an opening portion 19; and the airflow passage 20 is provided with a deodorizing unit 5 in which a foam material 17 is filled, a ventilation resistance layer 4 arranged close to or adjacent to the deodorizing unit 5 and configured to increase ventilation resistance of the air flowing through the airflow passage 20, and a chamber unit 3 arranged close to or adjacent to the deodorizing unit 5 and/or the ventilation resistance layer 4 as a chamber which temporarily stores the air fed to the deodorizing tank 1; and the air is fed to the deodorizing unit 5 in a state of being spread in the chamber unit 3 over a substantially entire surface of the deodorizing unit 5 as a result of that the ventilation resistance of flow of the air flowing through the airflow passage 20 is increased by the ventilation resistance layer 4.

A fuel cell system 2 is provided with: a contaminated exhaust gas line for supplying a contaminated exhaust gas containing a contaminant discharged from a facility; and a contaminated exhaust gas purification part for purifying the contaminated exhaust gas supplied from the contaminated exhaust gas line by using heat of reaction of a fuel cell.

Examples are disclosed that relate to recirculating ventilation systems for cooking appliances. One example provides a cooking appliance ventilation system, comprising a ventilation duct comprising an inlet aperture configured to receive cooking exhaust, a fan configured to pull the cooking exhaust through the inlet aperture and the ventilation duct, an ozone source configured to introduce ozone into the ventilation duct; and one more ozone mitigation components positioned within the ventilation duct downstream of the ozone source.

Examples are disclosed that relate to recirculating ventilation systems for cooking appliances. One example provides a cooking appliance ventilation system, comprising a ventilation duct comprising an inlet aperture configured to receive cooking exhaust, a fan configured to pull the cooking exhaust through the inlet aperture and the ventilation duct, an ozone source configured to introduce ozone into the ventilation duct; and one more ozone mitigation components positioned within the ventilation duct downstream of the ozone source.

A process and a plant for the thermal abatement of foul air containing malodorous substances. A flow of foul air containing malodorous substances as combustive air is fed into the combustion chamber of a unit for production and recovery of energy, and a flow of exhaust gas is obtained. The flow of exhaust gas is fed into a scrubber for the abatement of polluting substances, whereby the scrubber uses water for the washing of the flow of exhaust gas, producing a flow of low-temperature purified gas and a heated washing liquid. The heated washing liquid is conveyed to at least one heating jacket of a storage tank for the biological treatment of sewage of the aforementioned purification plant.

A process and a plant for the thermal abatement of foul air containing malodorous substances. A flow of foul air containing malodorous substances as combustive air is fed into the combustion chamber of a unit for production and recovery of energy, and a flow of exhaust gas is obtained. The flow of exhaust gas is fed into a scrubber for the abatement of polluting substances, whereby the scrubber uses water for the washing of the flow of exhaust gas, producing a flow of low-temperature purified gas and a heated washing liquid. The heated washing liquid is conveyed to at least one heating jacket of a storage tank for the biological treatment of sewage of the aforementioned purification plant.

Delivery mechanisms and distribution mechanisms are varied, adjusted, or modified based on a desired fuel application. Dimensions, flow rates, pressures, viscosities, temperatures, friction parameters, and combinations thereof may be varied, adjusted or modified. The fuel application may include a scrubber application. The scrubber application uses a delivery mechanism to deliver a wet or dry scrubbing agent at a low pressure to a distribution mechanism. The distribution mechanism distributes the scrubbing agent within the scrubbing chamber. The delivery mechanism is adjustable based on properties of a feedstock utilized to deliver the scrubbing agent, properties of a propellant, or properties of the scrubbing application. The distribution mechanism is adjustable based on desired distribution characteristics including shape, size, or velocity of drops, mists, or particles distributed. Location, processes, and by-products associated with output of the scrubbing application may be based on a stage of the scrubbing application.

A single-stage or multi-stage biological odor control treatment system for the removal of target vapor compounds from a contaminated air stream consisting of a first stage (onsite non-potable water treatment) where raw collection system non-potable water is extracted from the sewer collection system, screened and sprayed over a media bed where it is treated to secondary effluent water quality and is collected in a tank. The onsite non-potable water treatment system effluent is then pumped to the biological odor control system. This onsite non-potable water treatment system effluent is used for irrigating either a single media bed, or multiple media beds, which require continuous moisture and a source of nutrients. The microorganisms use the odorous compounds in the foul air stream as a food source. Treated air is then discharged to the atmosphere. The odor control treatment system drain water is then returned into the source containment collection point.