A method for introducing a gas into a liquid, the method including filling a gas volume enclosed below a free surface of the liquid and defined in a downward direction by an enclosed level of the liquid with the gas in sequential pulses wherein the gas simultaneously displaces the liquid top down from a gas lifting channel until the enclosed level of the liquid drops below an inlet cross section of a gas flow out channel; subsequently flowing the gas out of the gas volume downward through the gas lifting channel, a deflection portion adjoining at a bottom of the gas lifting channel, in upward direction through the inlet cross section and through the gas flow out channel adjoining the inlet cross section at a top to the free surface.

The present invention relates to a separation membrane element including a supply-side channel member, in which: the supply-side channel member has a net shape in which plural fibrous rows X including fibrous objects A and plural fibrous rows Y including fibrous objects B cross each other sterically to form intersections; at least one of the fibrous objects A and the fibrous objects B have a large diameter portion and a small diameter portion along a longitudinal direction; at least one of the fibrous objects A and the fibrous objects B include a thread that is thinner at a central portion located between intersection portions than at the large diameter portion; and a fiber between an arbitrary intersection and an adjacent intersection is a tapered fiber whose diameter increases like a taper in a direction from one intersection to the other intersection.

A spiral wound membrane module including a specialized endcap assembly including a connecting conduit defining a passageway extending radially inward from its outer periphery, and a differential pressure sensor connected to the passageway of the connecting conduit.

The present invention relates to a separation membrane including an organic polymer resin, in which a volume V1 of fine pores having a pore diameter of 100 nm or more is 0.3 cm.sup.3/g or more and 0.5 cm.sup.3/g or less, a volume V2 of fine pores having a pore diameter of less than 100 nm is 0.02 cm.sup.3/g or more and less than 0.1 cm.sup.3/g, and a ratio V1/V2 of the fine pore volume V1 to the fine pore volume V2 is 3 or more and 60 or less.

An aeration diffuser system includes an air inlet conduit defining an orifice, an air plenum coupled to the air inlet conduit at the orifice, such that the air plenum and the air inlet conduit are in fluid communication, a diffuser secured to a top of the air plenum, and a plurality of pressure transducers including a first pressure transducer at least partially located inside the air inlet conduit, and a second pressure transducer at least partially located inside the air plenum.

A water purification system and method embodying a submerged conduit with a semipermeable surface, thereby leveraging water pressure to cost-effectively and energy-efficiently purify the water that permeates the semipermeable surface. A intake conduit may provide the semipermeable surface, wherein the system contemplates rotating the intake conduit so that as it rotates it engages brushes or blades that clear the semipermeable surface of obstructions.

A detonator positioning device for use with a detonator in a perforating gun assembly is described. The detonator positioning device is configured for electrically contactably forming an electrical connection within the perforating gun housing by contact. The detonator positioning device includes a body having a first end, a second end, and a central bore extending between the first and second ends. The central bore is adapted for receiving one or more electrically contactable components of a detonator. The detonator positioning device aligns at least one of the one or more electrically contactable components to form an electrical connection with a bulkhead assembly.

A detonator positioning device for use with a detonator in a perforating gun assembly is described. The detonator positioning device is configured for electrically contactably forming an electrical connection within the perforating gun housing by contact. The detonator positioning device includes a body having a first end, a second end, and a central bore extending between the first and second ends. The central bore is adapted for receiving one or more electrically contactable components of a detonator. The detonator positioning device aligns at least one of the one or more electrically contactable components to form an electrical connection with a bulkhead assembly.

The present disclosure is directed to filtering technologies that combine elements of continuous and batch NF/RO based on the constraints of the end-user facility to achieve a target balance between, for instance, recovery and power consumption, and to reduce long term operating cost of a plant. A method for extending batch operation into a second induction period with antiscalant injection is also disclosed herein, with the second induction period allowing for yet higher water recovery.

The present disclosure is directed to filtering technologies that combine elements of continuous and batch NF/RO based on the constraints of the end-user facility to achieve a target balance between, for instance, recovery and power consumption, and to reduce long term operating cost of a plant. A method for extending batch operation into a second induction period with antiscalant injection is also disclosed herein, with the second induction period allowing for yet higher water recovery.