摘要:
The invention relates to an urban air decontamination system, comprising: a column that can be installed vertically on the ground, an air inlet at the lower level of the column, air suction means, and a microalgae-based photobioreactor, suitable for capturing NOx and CO2, and releasing O2, and which receives the air sucked in from the outside. The system also has an ambient light inlet arranged to allow ambient light to pass into the photobioreactor, and a purified air outlet, located downstream of the photobioreactor and located at the upper level of the column. The invention provides a system for the decontamination of urban air that can be manufactured at low cost and with a small footprint so that it can be installed in multiple locations in a city or town.
摘要:
The present invention relates to an extracting device supplying fixed quantity of exhaust gas for industrial facility, and more particularly, to an extracting device supplying fixed quantity of exhaust gas for industrial facility which supplies a certain amount of exhaust gas by installing a gas supply pipe, in which two blowers are arranged in a line, at a stack and operating each blower in accordance with a predetermined input value.
摘要:
A method is presented for biological removal of contaminants like sulfide from ground waters and industrial waters. Sulfide oxidizing bacteria by biological oxidation oxidizes sulfides in water to produce soluble sulfates. The present invention uses a packed bed bioreactor configuration that uses packing material to maximize the concentration of sulfide oxidizing bacteria.
摘要:
The present invention provides a process of cultivating microalgae and a joint method of same jointed with denitration. During the microalgae cultivation, EM bacteria is added into the microalgae suspension. The microalgae is preferably Chlorella sp., Scenedesmus sp., Monoraphidium sp. or Spirulina sp.. In the nutrient stream for cultivating microalgae, at least one of the nitrogen source, phosphorus source and carbon source is provided in the form of a nutrient salt, characterized in that during the cultivation, the pH of the microalgae suspension is adjusted with nitric acid and/or nitrous acid. The joint method comprises the steps of: (1) a step of cultivating microalgae; (2) a separation step of separating a microalgae suspension obtained from step (1) into a wet microalgae (microalgae biomass) and a residual cultivation solution; (3) a NOx absorbing/immobilizing step of denitrating an industrial waste gas with the residual cultivation solution obtained from step (2); wherein the nutrient stream absorbed with NOx obtained from step (3) is used to provide nitrogen source to the microalgae cultivation of step (1).
摘要:
Methods for enzyme-enhanced CO2 capture include contacting a CO2 -containing gas with an aqueous absorption solution at process conditions–such as high temperature, high pH, and/or using carbonate-based solutions–in the presence of Thermovibrio ammonificans carbonic anhydrase (TACA) or functional derivative thereof for catalyzing the hydration reaction of CO2 into bicarbonate and hydrogen ions and/or catalyzing the desorption reaction to produce a CO2 gas. The TACA may be provided to flow with the solution to cycle through a CO2 capture system that includes an absorber and a stripper.
摘要:
A process for capturing CO 2 use an absorption mixture containing water, biocatalysts and a carbonate compound. The process includes contacting a CO 2 -containing gas with the absorption mixture to enable dissolution and transformation of CO 2 into bicarbonate and hydrogen ions, thereby producing a CO 2 -depleted gas and an ion-rich solution, followed by subjecting the ion-rich solution to desorption. The biocatalyst improves absorption of the mixture comprising carbonate compounds and the carbonate compound promotes release of the bicarbonate ions from the ion-rich solution during desorption, producing a CO 2 gas stream and an ion-depleted solution.
摘要:
Hydrogen sulfide and mercaptans may be catalytically removed from a fluid stream by introducing to the fluid stream a sulfide quinone reductase (SQR) enzyme.
摘要:
The present invention provides a joint method of cultivating microalgae combined with denitrating an industrial waste gas and a system useful for the same. The joint method comprises the steps of: (1) a step of cultivating microalgae; (2) a separation step of separating a microalgae suspension obtained from step (1) into a wet microalgae (microalgae biomass) and a residual cultivation solution; (3) a NOx absorbing/immobilizing step of denitrating an industrial waste gas with the residual cultivation solution obtained from step (2); wherein the nutrient stream absorbed with NOx obtained from step (3) is used to provide nitrogen source to the microalgae cultivation of step (1). During the microalgae cultivation, EM bacteria is added into the microalgae suspension. The microalgae is preferably Chlorella sp., Scenedesmus sp., Monoraphidium sp. or Spirulina sp.. The system comprises, optionally from upstream to downstream: a NOx immobilizing unit; a microalgae cultivating device; a separator; and a recycle line, useful for recycling the residual cultivation solution obtained from the separator to upstream of the process.
摘要:
Disclosed are a radioactive decontamination device and a radioactive decontamination method, each capable of efficiently and overall reducing the radioactivity level of a radioactive contaminant. The present invention provides a radioactive decontamination device for reducing the radioactivity level of a carbonized radioactive contaminant (B) having a radioactive material, which includes a stirring container (41) for stirring the carbonized radioactive contaminant (B), a discharge feeder (42) for discharging the stirred carbonized radioactive contaminant (B) which is disposed below the stirring container (41), wherein the stirring container (41) is provided with a nozzle (45) for spraying an aqueous solution (44) containing photosynthetic bacteria over the carbonized radioactive contaminant (B) to be fed into the stirring container (41).
摘要:
The invention is directed to a process for the biological conversion of bisulphide into elemental sulphur, comprising the following steps: a) converting bisulphide as dissolved in an aqueous solution to elemental sulphur in the presence of sulphide-oxidizing bacteria and under anaerobic conditions to obtain a first liquid effluent comprising elemental sulphur and used sulphide-oxidizing bacteria; b) regenerating the used sulphide-oxidizing bacteria as obtained in step (a) and as comprised in an aqueous solution in the presence of an oxidant to obtain a second liquid effluent comprising regenerated sulphide-oxidizing bacteria; c) separating elemental sulphur from either the first and/or the second liquid effluent; d) using the regenerated sulphide-oxidizing bacteria in step (a) as the sulphide-oxidizing bacteria.