Patent ID: 8877486
Filing Date: 2014-11-04
Classification: C12M

Abstract:
1. An airlift circulation microalgae photoautotrophic-heterotrophic coupling photobioreactor for wastewater treatment carbon emission reduction, the overall appearance of the photobioreactor being a long ladder, including a microalgae heterotrophic zone, a gas-liquid separation chamber, a microalgae photoautotrophic zone, a recirculation zone at the bottom of the photobioreactor, and a liquid drained zone; wherein the microalgae heterotrophic zone is a rectangular parallelepiped structure, including a feed pipe, an air diffusion device, an algae liquid lifting zone, and a heat exchange pipe; the feed pipe being located in the middle-lower part of the profile of the microalgae heterotrophic zone, the air diffusion device which connects with an air inlet pipe and a flow control valve being located at the bottom of the microalgae heterotrophic zone; the algae liquid lifting zone being located in the middle-upper part of the microalgae heterotrophic zone, the heat exchange pipe being located in the middle of the algae liquid lifting zone; a top of the microalgae heterotrophic zone being configured to connect with the gas-liquid separation chamber; and a bottom of the microalgae zone being configured to connect with the recirculation zone; wherein the gas-liquid separation chamber is a symmetrical cubic structure, including a dispensing overflow weir, an effluent overflow weir, an exhaust pipe, and a sampling observation hole, the effluent overflow weir being located vertically in one side of the dispensing overflow weir and higher than the dispensing overflow weir, a side of the effluent overflow weir is the liquid drained zone, an effluent pipe being located at the bottom of the liquid drained zone, a top of the liquid drained zone being configured to connect the exhaust pipe, the sampling observation hole being located on the top of the gas-liquid separation chamber; wherein said microalgae photoautrophic zone is an oblique tetragonal cubic structure, including a phototaxis board, a backlight board, a photoreactions zone, and a CO wherein the CO wherein the gas flow of the CO