A gas-liquid separation device (30) for an anaerobic purification device for purification of wastewater, the gas-liquid separation device comprising: a gas-liquid riser pipe (32); a separation pipe (34) attached to the gas-liquid riser pipe (32), the separation pipe defining an angle with the direction perpendicular to the gas-liquid riser pipe between 45 degrees and +45 degrees, the separation pipe (34) configured to receive fluid from the gas-liquid riser pipe (32); at least one pipe gas outlet (35) located, when assembled with an anaerobic purification device, in a surface along the separation pipe (34) facing away from the ground, the at least one pipe gas outlet (35) configured to lead at least a portion of the gas in the separation pipe (34) outside the gas-liquid separation device; a hydraulic cyclone (36) attached to the separation pipe (34), the hydraulic cyclone configured to receive fluid from the separation pipe; at least one cyclone gas outlet (37) located in the upper side of the hydraulic cyclone (36); the at least one cyclone gas outlet configured to lead the gas entering the hydraulic cyclone (36) outside the hydraulic cyclone; and a liquid outlet (38) attached to the bottom part of the hydraulic cyclone (36), the liquid outlet configured to guide degassed fluid outside the hydraulic cyclone.

A high-concentration sewage treatment system for self-sufficiency of energy is provided. The system includes a hydrolysis acidification device, an anaerobic reactor, a sludge treatment device, a desulfurization tower, and a biogas power generation device. The hydrolysis acidification device includes a hydrolysis acidification tank, a first sedimentation tank, a first overflow water tank and an overflow pipe. The sludge treatment device includes a second sedimentation tank, a second overflow water tank, an inlet pipe and a dissolved oxygen meter. The second overflow water tank communicates with the hydrolysis acidification tank through a return pipe. The inlet pipe defines a jet hole. A regulating valve is connected to the inlet pipe. The regulating valve controls a speed and a height of mixed liquid in the jet hole. A high-concentration sewage treatment method for self-sufficiency of energy is also provided.

The facility comprises: a first tank (1) comprising separation means (15) extending over a portion of the height of the tank, so as to define a central compartment, or tube (11), a peripheral compartment, or ring (12), and a compartment for stirring and biochemical exchanges (16) in the bottom portion of the tank, comprising stirring means (17), a second tank (2) comprising separation means (25) extending over a portion of the height of the tank, so as to define a central compartment, or tube (21), a peripheral compartment, or ring (22), and a compartment for stirring and biochemical exchanges (26) in the bottom portion of the tank, comprising stirring means (27), means (ALIM) for feeding the waste to be treated into the first ringmeans (T) for transferring the partially treated waste from the first tube to the second ring, means (EVAC) for discharging the treated waste out of the second tube, advantageously pneumatic means (4, 43, 44) for circulating the waste from the first ring to the second tube.

The present disclosure discloses a slightly heavy particle system for wastewater treatment, comprising a contactor. Said contactor includes a gas-liquid-solid three-phase region, and said gas-liquid-solid three-phase region includes gas phase, liquid phase, and solid phase. Said liquid phase is the continuous phase and said solid phase is slightly heavy particles. Said slightly heavy particles are able to carry some microorganisms on their surfaces at least, and the density of said slightly heavy particles is higher than the density of said liquid. The slightly heavy particle system of the present disclosure applied in wastewater treatment can increase the concentration of microorganisms significantly, improve the ability to bear impact load, produce less sludge, and without sludge expansion. Meanwhile, the means to suspend slightly heavy particles with the combined effect of gas and liquid is able to reduce energy consumption to a larger extent. Therefore, this system features with high efficiency and low energy consumption.

The invention relates to methods, devices and inserts for reactors for microbial and anaerobic digestion. In particular, the invention relates to reactors comprising inserts for biofilms, such as methane-producing biofilms, immobilized on a carrier matrix.

The device (100) for purifying wastewater comprises: a vacuum anaerobic digester (105) comprising:
in the lower part (110), an inlet (115) for wastewater,
in the upper part (120): a weir (125) for treated water comprising a water outlet (130) positioned at a first height (131) starting from the lower part and a biogas outlet (135) positioned at a second height (136) higher than the first height,
a riser column (140) for raising water by suction of the biogas from the lower part to the upper part,
a downer column (141) for bringing down untreated wastewater from the upper part to the lower part and
a vacuum pump (145) connected to the biogas outlet, and
a buffer column (190) configured to receive wastewater.

Disclosed herein are an apparatus and method for accelerating sludge granulation. The apparatus for accelerating sludge granulation, which serves to accelerate a process of granulating activated sludge to produce granules, includes a cultivation tank configured to receive activated sludge and a carbon source to culture them in a preset environment for a preset time, an acceleration reactor configured to receive the activated sludge cultured in the cultivation tank and sewage from the outside to grow and granulate the activated sludge, and a control unit configured to control operations of the cultivation tank and the acceleration reactor.

An anaerobic digester apparatus including a container and an integrated cover and mixer system. The container includes vertical or sloped walls and is configured to contain wastewater and waste material. An integrated cover and mixer system is configured to extend over and cover the surface of the wastewater in the container. The cover is maintained on the surface of the wastewater in the container by a plurality of floats coupled to the cover. A mixer float is coupled to the cover with the mixer float including a mixer motor having a shaft extending through the mixer float and in fluid communication with the wastewater. The shaft includes an impeller configured to provide a downdraft mixing motion of the water and waste. The cover and mixer system are effectively integrated and coupled to the container to facilitate an anaerobic digestion of the waste in the container.

This disclosure describes a biochemical reactor with fixed feed conduit. The biochemical reactor may include a tank configured to house immobilized carriers and fluid. The biochemical reactor may include a circulation conduit at least partially disposed within the tank. The circulation conduit may include a circulation inlet opening and a circulation outlet opening. The biochemical reactor may include one or more vanes disposed proximate to the circulation outlet opening. The one or more vanes may be configured to cause the immobilized carrier and the fluid exiting the circulation outlet opening to enter into a helical pattern. The biochemical reactor may include a feed conduit having a feed outlet. The feed outlet may be disposed between a first end and the circulation inlet opening. The feed conduit outlet may be immovable with respect to the circulation inlet opening.

The present application discloses a two-phase sulfate reduction device and treatment method for preventing sludge calcification, which belongs to the technical field of wastewater treatment in environmental engineering. The present application combines a two-phase sulfate reduction anaerobic reactor with an alloy catalyst, and reasonably arranges a two-phase connection unit of the alloy catalyst within the device body. By using the special functions of the porous alloy catalyst material to release free electrons into a body of water and polarize the body of water, the electrostatic potential of the body of water is changed, sludge calcification during the wastewater treatment process is prevented, and the treatment efficiency of the anaerobic system for sulfate organic wastewater is ensured.