摘要:
The invention relates to a method for gas methanation using sprinkle bioreactors, as well as to a device for carrying out said method. The invention describes a method for methanating gaseous substrates in which the following steps are carried out: a) providing a reactor, filled with culture beds, with methane-forming micro-organisms that are immobilised on the surface of said culture beds; b) sprinkling the culture beds that have the methane-forming micro-organisms immobilised thereupon, with a process liquid, c) supplying a mixture of gaseous substrates to the reactor, the mix ratio of the substrates in the gas phase being selected such that dissolving said gaseous substrates in the process liquid results in a stoichiometric ratio of the gaseous substrates dissolved in said process liquid, and d) conducting the obtained gas mixture out of the reactor. The invention also describes suitable devices for carrying out the method and suggests culture beds which are designed as rotatable discs and arranged in the longitudinal axial direction of the cylindrical region of the reactor. The described method and device make the use of gas methanation more economical, particularly in the biochemical production of methane from carbon dioxide and hydrogen.
摘要:
The invention relates to a method for the solid/liquid separation of suspensions containing microalgae, wherein biodegradable materials are used as a filter material. The method comprises the following steps: First, a filter layer made of organic material is introduced into a filter device. Then at least one application of the suspension to be separated to the filter layer is performed, wherein the solid constituents of the suspension are deposited on the filter layer and the liquid constituent passes through the filter layer as filtrate. The solid constituents of the suspension comprise microalgae, wherein subsequently the filter material and the microalgae are hydrolyzed by microorganisms naturally contained in the filter material or added separately. For the hydrolysis, it is important that the filter layer be kept moist in order to prevent the microalgae from drying out. In addition, valuable substances (dyes, lipids, proteins) can be extracted from the filtrate. The filtrate can also be used to produce biogas in a methane reactor. The filter material that is not biodegradable or is difficult to biodegrade can be used as organic compost. The waste liquor from the methane reactor can be used again for microalgae cultivation after decontamination.
摘要:
The invention relates to underwater support systems for installations having buoyancy elements in bodies of water, and either counterweights or anchors on or in the floor of the body of water, and traction means between the buoyancy elements and the counterweights or anchors. The underwater support systems are characterized in particular by secure positioning of the installations and simple implementation. To this end, at least three buoyancy elements (2) coupled to each other by means of connecting elements are each connected to one counterweight (3) or anchor by means of a tensioning means. When no force acts on the installation, each buoyancy element is disposed vertically above a counterweight or anchor. Furthermore, the vector of the buoyancy force of each buoyancy element acting on the buoyancy element is so great that even under the maximum load, the tensioning means (4) between the buoyancy element and the counterweight or anchor are always under tension, and the tensile forces always act simultaneously on all of the buoyancy elements. The counterweights or anchors secure the location and the position of the underwater support system having the installation.