The present disclosure provides a biological reaction system. The biological reaction system may include a reaction vessel and a temperature sensor. The reaction vessel may include an accommodating chamber configured to accommodate a mixture of cells and liquids. An outer side of a bottom of the reaction vessel may be provided with a groove recessed in a direction towards the accommodating chamber. The temperature sensor may include a probe, and the probe may be within the groove. The groove may be provided with a first heat conduction member, and the first heat conduction member may be sleeved outside the probe.

A method for producing a fuel includes transporting one or more pressure vessels containing pressurized biogas from a first location to a second location, and removing biogas from the one or more pressure vessels at the second location. The fuel production process is improved by controlling the decanting flow rate to provide a total decant time greater than 30-40 minutes, by actively heating biogas contained within the one or more pressure vessels, or some combination thereof.

Provided is a method for treatment of gas mixtures and an apparatus for carrying out a method for treatment of raw gas mixtures. More particularly, there is provided a method and an apparatus for treatment of gas mixtures, such as biogas or flare gas, and in particular to a method and an apparatus for removing contaminants, in particular H.sub.2S, from a gas mixture containing CH.sub.4 and H.sub.2S.

The invention discloses an automatic off-line gas-water combined-washing membrane bioreactor, comprising a PLC automation control cabinet, a MBR reactor, a MBR membrane assembly, a rotating hood, an annular guide rail, a lifting device, a washing pipe network, an external interface, a gas washing pipe, a water washing pipe, a gas pump and a water pump, wherein the gas pump, the water pump and the three-way change valve are all connected with the PLC automation control cabinet, the washing pipe network is provided with several nozzles. The present invention adopts a full PLC automation control system, the PLC automation control cabinet controls a pressure washing pump (gas pump and water pump), and gas or water is injected into the washing pipe network by flexibly adjusting the three-way change valve, so that the operation is simple, the cleaning is complete, and the manual operation load is reduced.

In one aspect, the present invention pertains to a system for increasing the methane content of biogas (biogas upgrading). In another aspect, the invention relates to a method for increasing the methane content of biogas.

The present disclosure relates, according to some embodiments, to systems and methods for processing organic compounds, such as manure or other organic waste. Embodiments may comprise a first containment chamber, a first anaerobic chamber, and a second anaerobic chamber. A first anaerobic chamber may receive organic compounds from a first containment chamber, and may provide a fluid stream to a second anaerobic chamber. The second anaerobic chamber may comprise a substrate, such as lava rock, with bacteria growing thereon. Further, a sulfide gas treating unit may receive and treat sulfide gases from a first anaerobic chamber and/or a second anaerobic chamber. A water storage unit may receive and store waste water or effluent from a first anaerobic chamber and/or a second anaerobic chamber.

A system for producing an organic substance, including: a synthesis gas generation furnace for producing a synthesis gas by partially oxidizing a waste including a carbon source; a synthesis gas purification unit connected to the synthesis gas generation furnace and purifying the synthesis gas generated in the synthesis gas generation furnace to reduce an impurity concentration in the synthesis gas; and an organic substance synthesis unit which is connected to the synthesis gas purification unit and generates an organic substance from the synthesis gas purified in the synthesis gas purification unit, wherein the synthesis gas purification unit includes a detection unit for measuring an impurity concentration in the synthesis gas.

The invention concerns a digester for performing a sludge methanization treatment for the purpose of generating biogas and a digestate, the digester comprising a device (32) for discharging foaming and/or floating matter (16) from the digestate (12), comprising: a first tank (33) delimited by a first wall (100) having a first height (h1), the first tank (33) being intended to be fed with digestate (12) and with foaming and/or floating matter (16) from a volume of material (14) by overflow over the first wall (100); a second tank (34) connected to the atmosphere and sited outside the enclosure (13) of the digester, comprising: a first zone (35) delimited by a second wall (103) having a second height (h2); and a second zone (36) in communication with the reservoir (19); a conduit (37) connecting the first tank (33) via a first orifice (101) to the first zone (35) of the second tank (34) via a second orifice (102) positioned higher than or level with the first orifice (101), the first zone (35) being intended to be fed with digestate (12) and with foaming and/or floating matter (16) from the first tank (33) through the conduit (37); the second zone (36) being intended to be fed with digestate from the first zone (35) by overflow over the second wall (103);
the first height (h1) and the second height (h2) being predefined such that a first mixture, containing variable proportions of digestate and foaming and/or floating matter in the first tank (33) and having a first average density (d1), is transferred by gravity into the first zone (35), which contains a second mixture containing variable proportions of digestate and foaming and/or floating matter and having a second density (d2), the transfer operating such that the product of the first average density (d1) times the first height (h1) is greater than the product of the second average density (d2) times the second height (h2) times the first height (h1).

A bioproduct manufacturing system is disclosed. The system comprises a hollow-fiber primary membrane gas absorber comprising a shell side and a lumen, wherein the primary membrane gas absorber is configured to receive a carbonate salt-based solvent on the shell side and a gas mixture comprising oxygen, nitrogen, and carbon dioxide in the lumen, at least one runway algal cassette reactor-photobioreactor, and a growth medium circulating between the primary membrane gas absorber and the at least one runway algal cassette reactor-photobioreactor. The at least one runway algal cassette reactor-photobioreactor comprises at least one growth chamber coupled to and in fluid communication with a headspace channel so as to define and interior volume, a first condenser coupled to and in fluid communication with the headspace channel, and a harvest line in fluid communication with the at least one growth chamber and coupled to a filter.

The invention provides a process for producing a fermentable gas stream from a gas source that contains one or more constituent which may be harmful to the fermentation process. To produce the fermentable gas stream, the gas stream is passed through a specifically ordered series of removal modules. The removal modules remove and/or convert various constituents found in the gas stream which may have harmful effects on downstream removal modules and/or inhibitory effects on downstream gas fermenting microorganisms. At least a portion of the fermentable gas stream is preferably capable of being passed to a bioreactor, which contains gas fermenting microorganisms, without inhibiting the fermentation process.