Abstract:
Membrane strip diffusers are disclosed, useful for example in aerating wastewater in activated sludge plants. These diffusers have membranes, diffuser bodies comprising gas conduits and, in addition to the conduits, integral membrane supports elongated in the same general direction. Such conduits are for example co-extruded with the diffuser bodies. The supports are apertured to discharge gas into chambers formed beneath the membranes when they inflate, and the membranes have pores to discharge the gas. The membrane supports preferably include wings or lateral portions which have beneath them space that is free of bracing connecting that part with the pipe. Ways to edge- and end-seal the membranes to the diffuser bodies and ways to support the diffusers are also disclosed.
Abstract:
The present invention is a composting bioreactor system that can be continually fed with biodegradable solid wastes, waste waters and exhaust gases, that can automatically recycle the biodegradable wastes into liquid nutrients and heat energy, and that automatically supplies the nutritious liquid and heat into an integrated hydroponics system or aquaponics system. The invention together with the integrated food growing system can be installed onsite in places such as household balconies, household backyards and premises of restaurants and food factories etc. therefore can lead to zero mileage targets both for recycling the wastes and for growing the foods consumed in the same location. It can fully recover and reuse all the nutrients and heat energy from the treated wastes. It can also reach the target of nearly zero pollution to the environment during all processes. For better operational efficiency, an oblique cone agitator, a fish plow agitator and a vortex flower turbine are specially designed for the bioreactor system.
Abstract:
An aeration element 1 for gasification or aeration of liquids includes an essentially flattened, rigid support element having a substantially oval cross-section and corrugated outer surfaces, the corrugated outer surfaces including ridges defining grooves therebetween; a threaded opening for receiving a cooperating fitting for connection to an air supply; and a flexible membrane of elastomeric material disposed around the support element. An assembly bracket 72 includes upper and portions that can be cooperatingly attached to one another about the aeration element for securing the aeration element to a floor of a tank or pool. The assembly bracket includes through-going passages for enabling water to circulate around the bracket and reduce buoyancy of the assembly. Two aeration elements 1 of shorter lengths can be positioned adjacent two one another, secured within assembly brackets 72, and connected at adjacent ends, so that one of the aeration elements 1 functions as a conduit to the other aeration element when air is supplied into one of the aeration elements 1.
Abstract:
The present invention relates to an aeration device provided with: an aeration tube, in the upper part of which multiple aeration holes are formed and which extends in the horizontal direction; and an open-ended tube. One end of the open-ended tube directly or indirectly communicates with an end of the aeration tube and the open end of the open-ended tube opens downward in the vertical direction and satisfies formula (1). The present invention provides: an aeration device, which is capable of uniform aeration, can be placed conveniently, and with which complication of tube placement does not occur easily; an operation method therefor; and a water treatment apparatus provided with the aeration device.
(In formula (1), (D) is the internal diameter (mm) of the aeration tube, (d) is the diameter (mm) of the aeration holes, (n) is the number of aeration holes per one aeration tube, and (Q) is the air flow (l/min) of the gas supplied per one aeration tube.)
Abstract:
A container assembly includes a flexible bag having an interior surface bounding a chamber and an opposing exterior surface, the bag having a top end wall, a bottom end wall, and an encircling sidewall extending therebetween, the bottom end wall including a first polymeric sheet overlying a second polymeric sheet. A first weld line welds the first polymeric sheet to the second polymeric sheet, the first weld line bounding a first sparging area formed between the first polymeric sheet and the second polymeric sheet. A plurality of first perforations are formed through a portion of the first polymeric sheet that overlies the first sparging area so that gas can pass from the first sparging area, through the first perforations and into the chamber of the bag.
Abstract:
A disposable material processing apparatus, useable as a bioreactor or fermenter, includes a hollow tank and a mixing paddle disposed within the interior of the tank and adapted to mix contents therein. The paddle may be isolated within a flexible sleeve. Various functional elements, such as a sparger, sensor, material extraction conduit, material addition conduit, and/or heat exchange element may be provided, and optionally arranged to travel with the paddle within the tank interior. Baffles may protrude into a mixing tank to enhance mixing. A tank and/or sleeve may comprise polymeric film material.
Abstract:
A diffuser (1) for mixing and oxygenating water or other liquid with an airstream employs a self supporting microporous tubular membrane (11), arranged in a spiral or grid configuration, with openings which are at least equal to the diameter of the membrane (11), extending both horizontally and vertically between the circuits or grids of the diffuser (1). Gas, when forced through the tubular membrane (11), forms fine bubbles which agitate, oxygenate and entrain the surrounding liquid as it slowly rises through the openings. The tubular membrane (11) is flexible and is to be mounted on a manifold (14, 15) which connects it to a source of air or gas, and which may also impart buoyancy or serve as an anchor in the liquid.
Abstract:
A water oxygenating device comprising an upright tubular housing (10) mounted on a base (13) close to the bottom of a body of water and having upper and lower ends open to enable water to flow upwardly therethrough. Air lift nozzles (18) and fine bubble dispersion air supply annular pipes (15 and 16) serve to generate a flow of bubbles upwardly through the tubular housing, the fine dispersion of air bubbles effecting enhanced oxygen transfer into the water throughout passage around a pair of shallow helical flights (22, 23) having an angle of approximately 10° to the horizontal. The fine bubble air diffusion commences outside of the tubuiar housing (10) to provide a gentle mixing action and thus maximum oxygen transfer within the tube where the water and oxygen interface is retained for as long as possible.
Abstract:
Zur Begasung von Gewässern wird eine Begasungsmatte vorgeschlagen, die aus einem als Auftriebskörper ausgebildeten Rahmen 1 besteht, auf dem Begasungsschläuche 3 montiert sind. Der Rahmen 1 ist derart mit einer zentralen Beschwerung 5 versehen, daß er im Gewässer über dem Gewässerboden schwebt.