69 results about "Airlift pump" patented technology

A method of cleaning a membrane surface immersed in a liquid medium with a fluid flow, including the steps of providing a randomly generated intermittent or pulsed fluid flow along the membrane surface to dislodge fouling materials therefrom. A membrane module is also disclosed comprising a plurality of porous membranes (6) or a set of membrane modules (5) and a device (11) for providing a generally randomly generated, pulsed fluid flow such that, in use, said fluid flow moves past the surfaces of said membranes (6) to dislodge fouling materials therefrom.

Plants are grown in adjacent rows of trays that are rotated within a pool of a nutrient solution. The roots of the plants are at least partly immersed in the nutrient solution. Each row includes a gap wide enough to receive a single tray from an adjacent row. Using three rows, the plants are planted only in one of the rows, and later the rotation is used to space the planted trays one tray apart. Each tray is a parallelepipedal block with apertures for supporting respective plants. The long sides of the blocks have protrusions for preventing adhesion of the blocks. Airlift pumping circulates the nutrient solution past the roots and maintains at least 80% dissolved oxygen saturation in the nutrient solution. A screen of parallel inflatable tubes provides adjustable shade above the pool.

The invention relates to a pretreatment method of organic wastewater difficult to biochemically degrade in the technical field of industrial wastewater treatment. The method comprises the following steps: organic wastewater passes through the suspended carrier which is arranged in a hydrolysis acidification reactor and activated sludge which sticks to the surface of the suspended carrier and then is discharged; the suspended carrier is transferred to an ultrasonic generator by an airlift pump, is irradiated and then flows back to the water inlet end of the hydrolysis acidification reactor; and the suspended carrier is mixed with the carrier in the hydrolysis acidification reactor to preferentially contact with the water inflow of the hydrolysis acidification reactor, and the activity of the microorganisms on the surface of the carrier is utilized to treat organic wastewater. By adopting the method, the treatment capability of the hydrolysis acidification technology can be increased, and the biodegradability of wastewater can be improved.

Plants are grown in adjacent rows of trays that are rotated within a pool of a nutrient solution. The roots of the plants are at least partly immersed in the nutrient solution. Each row includes a gap wide enough to receive a single tray from an adjacent row. Using three rows, the plants are planted only in one of the rows, and later the rotation is used to space the planted trays one tray apart. Each tray is a parallelepipedal block with apertures for supporting respective plants. The long sides of the blocks have protrusions for preventing adhesion of the blocks. Airlift pumping circulates the nutrient solution past the roots and maintains at least 80% dissolved oxygen saturation in the nutrient solution. A screen of parallel inflatable tubes provides adjustable shade above the pool.

This invention discloses a solar photovoltaic nanoscale water purification island used in field waters. The island is composed of: a filler barrel, a water distribution disc, an airlift pump and a solar photovoltaic air pump. A hard pipe and a water outlet pipe are set at the bottom of the filler barrel. The filler barrel is surrounded by foam plastic floating bodies. At least two layers of mesh plates are set in the filler barrel, between which are filled with various nanoscale water purification biomaterials. A through hole is formed at the bottom of the water distribution disc. Through connected grooves are formed on the water distribution disc by trough plates. Filtering sponge is set in the grooves. The water distribution disc covers the filler barrel. An air transmission pipe is set in the hard pipe. One end of the air transmission pipe is connected with an aeration pump, while the other end is connected with an air exhaust stone. The water distribution disc extends from the upper end of the hard pipe. Two solar photovoltaic electric plates are connected with the filler barrel respectively. The output lines of the solar photovoltaic electric plates are connected with the storage battery and the aeration pump, respectively, via the control circuit of the charge / discharge controller. The island is suitable for field fishponds, wastewater treatment plants, pollution remediation waters and landscape green areas.

The invention discloses a super high-rise building (such as tens of floors even hundreds of floors) air conditioner system for conveying energy by a liquid pump or an air pump instead of a water pump. A liquid refrigerant pressurized distribution device and a B-class gaseous refrigerant pressurized distribution device are added in the air conditioner system of a building; when a refrigeration air conditioner is required, the liquid refrigerant pressurized distribution device is started; when a heating air conditioner is required, the B-class gaseous refrigerant pressurized distribution device is started; the purpose of the super high-rise building air conditioner system is to perfect the CN100473913C patent technology which is favorable for saving energy and avoids the troubles that scales are likely to form and are difficult to remove; and finally, the purpose of 'conveying energy by a liquid pump or an air pump instead of a water pump' in the title is realized, i.e. air entering the room can be directly subjected to refrigeration or heating air conditioner by the liquid refrigerant or the gaseous refrigerant in the evaporator or the condenser in the air conditioner system. The implementation cost of the two refrigerant pressurized distribution devices is almost equivalent to the cost of omitted facilities related to the above water medium.

The reactor comprises: a lower reactor region (2) for accommodating a sulfur melt (3); non-pressure-bearing first caverns (4) for temporary accommodation of a product gas mixture that is formed by exothermic reaction and comprises hydrogen sulfide, sulfur and hydrogen; non-pressure bearing second caverns (8) arranged above the first caverns and for temporary accommodation of the product gas mixture formed in the first caverns and for formation of further hydrogen sulfide by exothermic reaction of sulfur and hydrogen to form a product gas mixture; and a gas collecting region (6). The reactor comprises: a lower reactor region (2) for accommodating a sulfur melt (3); non-pressure-bearing first caverns (4) for temporary accommodation of a product gas mixture that is formed by exothermic reaction and comprises hydrogen sulfide, sulfur and hydrogen, and a supply device for controlled supply of pressurized gaseous hydrogen per first cavern; non-pressure bearing second caverns (8) arranged above the first caverns and suitable for temporary accommodation of the product gas mixture formed in the first caverns and for formation of further hydrogen sulfide by exothermic reaction of sulfur and hydrogen to form a product gas mixture; and a gas collecting region (6) for accommodating the product gas mixture at elevated temperature and elevated pressure relative to standard conditions. One of the second caverns comprises a supply device suitable for controlled supply of pressurized gaseous hydrogen. The reactor further comprises: non-pressure-bearing third caverns arranged above the second caverns; non-pressure-bearing installed devices suitable for continuous transfer of a total amount of product gas mixture formed in the lower reactor region to the gas collecting region, where a catalyst is present in the installed devices suitable for reacting sulfur and hydrogen still present in the product gas mixture to form hydrogen sulfide; an inner wall that allows continuous circulation of the sulfur melt according to an airlift pump principle in the course of operation of the reactor with involvement of a space between an outer reactor wall and the inner wall; a reflux condenser suitable for condensation of the sulfur present in the product gas mixture; and an input line suitable for transport of the product gas mixture from the gas collecting region to the reflux condenser and a return line suitable for return of the condensed sulfur to the reactor. One of the second or third caverns has a greater volume than each of the first caverns, and / or one of the second or third caverns has lower heat removal for construction reasons than each of the first caverns. The installed devices are arranged such that, the installed devices are present in thermal contact with the sulfur melt after sufficient filling of the lower reactor region with the sulfur melt. The catalyst is cooled by transfer of heat to the sulfur melt if the installed devices contain the catalyst. An independent claim is included for a process for preparing hydrogen sulfide by exothermic reaction of sulfur with hydrogen at elevated temperature and elevated pressure relative to standard conditions to form a product gas mixture comprising hydrogen sulfide and sulfur.

The dual injection airlift pump has a hollow tubular body through which the liquid being pumped passes upward from the lower intake end to the upper outlet end. Air or other gas is injected into the liquid in the pump body, the less dense gas adding buoyancy to the liquid and entraining the liquid to rise toward the outlet end. The dual injection airlift pump includes two air injection stages, with the first or lower stage having a perforated interior sleeve allowing the gas to pass therethrough to be injected radially into the liquid. The second, upper stage has an impervious sleeve defining a gap between the sleeve and the interior surface of the pump wall, the lower end being sealed and the upper end open. Air is injected between the sleeve and pump wall, the air exiting at the upper or downstream end in an axially peripheral flow pattern.

The airlift pump with helical flow pattern includes a nozzle body having a fluid passage therethrough. A plurality of air or gas injector nozzles surrounds the central passage. The outward side of each nozzle is tangent to the fluid passage wall through the body to produce circumferential flow in the fluid passage. Each of the air injector nozzles is also inclined in the direction of flow through the body, the tangential inclination resulting in a helical flow pattern through the body. The centrifugal force generated by the circumferential and helical flow through the body results in a pressure decrease through the core of the fluid passage, thereby enhancing entrainment of fluid into the device to increase its efficiency. The fluid passage through the nozzle body is devoid of any structure, and the inlet end of the passage is smoothly radiused to further increase the efficiency of the device.

The invention provides equipment for improving the live transportation survival rate of edgy fishes. The equipment comprises a tank (1), a plastic cover film (2) matched with the tank (1), and a water purifier (3). The water purifier (3) comprises a water distribution layer (4), an ice cube layer (5), a filter cotton layer (6), an active carbon layer (7), and a water storage layer (8), wherein the above layers are arranged from top to bottom. The lower part of the tank (1) is provided with a water inlet pipe (9) to be connected with the water distribution layer (4) via the water purifier. The upper part of the tank (1) is provided with a provided with a water outlet pipe (10) to be connected with the water storage layer (8) via the water purifier. The water outlet pipe (10) of the water purifier is provided with an airlift pump interface (11). According to the technical scheme of the invention, a water quality purification method for water in transportation facilities is provided for aquaculture practitioners during the transportation process based on the physiological characteristics of saury and shad. In this way, the collision injured risk of fishes when frightened is reduced, and the water quality of the transportation water is improved. Meanwhile, the metabolites of fishes are timely eliminated, so that the stress reactions of edgy fishes, such as saury and shad, are reduced. Moreover, the risk of mechanical traumas and the risk of physiological endogenous injuries during the transportation process are reduced. The live transportation survival rate of fishes is improved. Furthermore, the temporary-rearing or cultivation survival rate of fishes after the transportation process is improved.