A system and method for combined microorganism degradation and air sparging-soil vapor extraction (AS-AVE) of oil-containing sludge can include a microorganism-adding unit, an AS-SVE unit, a metering-feeding layer, a mixing layer, a material discharging layer and a crawler-type conveyor. In some embodiments the microorganism-adding unit and the AS-SVE unit can include a microorganism storage tank and an AS-SVE storage tank. In some embodiments, the metering-feeding layer can include a valve, a pressure gauge, a flowmeter, a feeding chamber. In some embodiments, the mixing layer can include pipeline connectors and a stirrer. In some embodiments, the material discharging layer is mainly for transporting the treated soil away. The system can remove petroleum, petroleum hydrocarbons, volatile organic compounds (VOCs), and degradable and extractable contaminants from oil-containing sludge by a method combining microorganism degradation, mechanical stirring, AS-AVE and the like, thereby achieving soil remediation and automatic treatment in a large scale.

A system and method for combined microorganism degradation and air sparging-soil vapor extraction (AS-AVE) of oil-containing sludge can include a microorganism-adding unit, an AS-SVE unit, a metering-feeding layer, a mixing layer, a material discharging layer and a crawler-type conveyor. In some embodiments the microorganism-adding unit and the AS-SVE unit can include a microorganism storage tank and an AS-SVE storage tank. In some embodiments, the metering-feeding layer can include a valve, a pressure gauge, a flowmeter, a feeding chamber. In some embodiments, the mixing layer can include pipeline connectors and a stirrer. In some embodiments, the material discharging layer is mainly for transporting the treated soil away. The system can remove petroleum, petroleum hydrocarbons, volatile organic compounds (VOCs), and degradable and extractable contaminants from oil-containing sludge by a method combining microorganism degradation, mechanical stirring, AS-AVE and the like, thereby achieving soil remediation and automatic treatment in a large scale.

An organic wastewater treatment device includes a biological treatment tank in which biological treatment units are connected in series along a flow of organic wastewater. Each biological treatment unit has a pair of an anoxic tank disposed on an upstream side, and an aerobic tank disposed on a downstream side in which a membrane separation device is immersed in activated sludge. The activated sludge returns from a most downstream-side aerobic tank to a most upstream-side anoxic tank through a sludge return path. Whether to stop an operating membrane separation device and whether to start a stopped membrane separation device are determined for each biological treatment unit based on at least one of an inflow amount of the organic wastewater, a tank water level, a transmembrane pressure difference of each membrane separation device, a T-N concentration of the treated water, and an NH3-N concentration of the treated water as an index.

A bubble generating device for sewage purification includes: an outer cylinder 6 vertically placed in water; an injection port 2A placed at a lower central portion in the outer cylinder 6 for upwardly injecting air as bubble flow supplied from an air supply source; and microbubble generating means 3 placed higher than the injection port 2A for refining bubbles injected from the injection port 2A. A throat portion 30 for narrowing a flow path of bubble flow and water flow which rises in the outer cylinder 6 is placed between the injection port 2A and the microbubble generating means 3.

Apparatus for treatment of wet organic matter to produce biogas, comprising a closed reactor (11) for anaerobic digestion of the wet organic matter. The anaerobic reactor comprises two vertical 5 tubes, a vertically arranged outer tube (14) defining a first reactor chamber (111) enveloping a vertically arranged inner tube (15) which is divided into a first region (112a) and a second region (112b) of a second reactor chamber (112) by a vertical partitioning wall (16). The first reactor chamber comprises a particle retaining unit (31) connecting the first and the second reactor chambers. The anaerobic reactor (11) exhibits a top discharge pipe (18) for gas developed in either 0 of the two reactor chambers (111, 112). A method for treatment of wet organic matter is also contemplated.

Apparatus for treatment of wet organic matter to produce biogas, comprising a closed reactor (11) for anaerobic digestion of the wet organic matter. The anaerobic reactor comprises two vertical 5 tubes, a vertically arranged outer tube (14) defining a first reactor chamber (111) enveloping a vertically arranged inner tube (15) which is divided into a first region (112a) and a second region (112b) of a second reactor chamber (112) by a vertical partitioning wall (16). The first reactor chamber comprises a particle retaining unit (31) connecting the first and the second reactor chambers. The anaerobic reactor (11) exhibits a top discharge pipe (18) for gas developed in either 0 of the two reactor chambers (111, 112). A method for treatment of wet organic matter is also contemplated.

A method and apparatus for conditioning the settled solids in the bottom of a wastewater filtration tank to reduce the acidification of the sludge and prevent the excessive growth of undesirable biological growth.

The disclosure relates to the technical field of energy saving and consumption reduction, and in particular, to a gas-liquid recycling device. A gas-liquid recycling device and a method of using same provided by the disclosure includes a gas-collection hood, a gas delivery pipe and a liquid delivery pipe. A gas inlet port of the gas delivery pipe is connected to the gas collection hood, a gas outlet port of the gas delivery pipe is inserted into a liquid outlet port of the liquid delivery pipe, and a liquid inlet port is located at an end of the liquid delivery pipe opposite to the liquid outlet port.

The disclosure relates to the technical field of energy saving and consumption reduction, and in particular, to a gas-liquid recycling device. A gas-liquid recycling device and a method of using same provided by the disclosure includes a gas-collection hood, a gas delivery pipe and a liquid delivery pipe. A gas inlet port of the gas delivery pipe is connected to the gas collection hood, a gas outlet port of the gas delivery pipe is inserted into a liquid outlet port of the liquid delivery pipe, and a liquid inlet port is located at an end of the liquid delivery pipe opposite to the liquid outlet port.

A bubble generator including a container having a side wall and a top wall defining a cavity. An insert is located within the cavity defining a gas path with a trap portion. The gas path being in communication with an exit in the container. The cavity including an opening receiving a gas accumulating within the cavity, the gas path allowing the accumulating gas to escape through the exit once the accumulating gas reaches a predetermined level proximate the trap portion.