Gas and liquid contact apparatus – Contact devices – Rotating
Patent
1990-08-16
1991-12-17
Miles, Tim
Gas and liquid contact apparatus
Contact devices
Rotating
261108, 261113, 2611141, B01F 304
Patent
active
050733117
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
It is important in breeding of aquatic life to quickly supply oxygen required for breathing in a breeding liquid and to quickly remove unnecessary carbon acid gas from the breeding liquid. Such dissolving of the gas into the liquid or removal (evaporation) of the gas from the liquid relies upon the size of the contact surface area between the gas and the liquid. If the contact surface area is constant, movement of ht liquid, that is, stirring of the liquid increases the contact surface area, so that dissolving or evaporation quickly occurs. The invention is directed to stagnate or accumulate the gas into the liquid in a plurality of separated manners thereby increasing the contact surface area between the gas and the liquid in a three-dimensional manner and, further, to stir the liquid by a motor located centrally thereby rapidly increasing the contact effect.
SUMMARY OF THE INVENTION
It is considered that conditions, under which a gas is dissolved in a liquid, include 1) the kind of the gas, 2) a partial pressure of the gas in the atmosphere, 3) the kind of the liquid, 4) a partial pressure of the gas in the liquid, 5) temperature, 6) air pressure, 7) a contact surface area between the gas and the liquid, and the like.
Whether the gas is dissolved in the liquid or is removed from the liquid is determined by the relationship between a partial pressure of the gas in the atmosphere containing the gas and a partial pressure of the gas (dissolved) in the liquid. That is, if the pressure of the gas in the atmosphere is higher than the partial pressure in the liquid, the gas is dissolved in the liquid and, conversely, if the partial pressure of the gas in the atmosphere is lower than the partial pressure in the liquid, the gas is removed from the liquid. The invention utilizes this physical phenomenon to efficiently dissolve or remove the gas into or from the liquid by moving the liquid more than the gas to increase the contact surface area between the gas and the liquid.
The aspect, in which gas is dissolved in water, will be described using oxygen as an example. Oxygen in a gas is quickly dissolved in a surface of the water due to a diffusion phenomenon (this phenomenon is also diffusion), but the dissolved oxygen is diffused in the water extremely slowly. That is, only 0.0001 second or 0.01 second will be required for diffusion of distances over 1 micron or 10 microns, respectively. If the distances become 1 mm and 1 cm, however, 100 seconds and 3 hours are required, respectively. A stream or flow of the water plays an important role in transmitting oxygen to water which is not in contact with the oxygen, so that the dissolving phenomenon due to the above-described increase in the contact surface area is explained from another angle theoretically.
A microorganism decomposes organic matter under the separated and accumulated gas phase for the purpose of hyperplasia of the microorganism per se under aerobic conditions in the gas phase. The decomposing speed is the same as the breeding speed of the microorganism. This means that, if the microorganism is in contact with sewage having organic matter with the number of individuals to such an extent as to utilize (decompose) a give quantity of organic matters by a single cell division, it is possible to treat the sewage for 20 to 30 minutes. The effect of the oxygen supply in the invention will now be described. Since oxygen starvation can be avoided in a three-dimensional manner, that is, since air is accumulated in a multiple stage manner to increase the contact surface area between the oxygen and the water infinitely, it is possible to cope with the oxygen demand of a plethora of microorganisms to an extent near the infinite, theoretically. If stirring due to a motor is added, an effect the same as increasing the contact surface area occurs so that the oxygen is rapidly supplied. Thus, carbonic acid gas is quickly removed.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be better understood by reference to the accompanying
REFERENCES:
patent: 169970 (1875-11-01), Deymann et al.
patent: 344322 (1886-06-01), Lunge
patent: 2106366 (1938-01-01), Tijmstra
patent: 2153570 (1939-04-01), Mann, Jr.
patent: 2515090 (1950-07-01), Linder
patent: 2672330 (1954-03-01), Swenson
patent: 2727882 (1955-12-01), Vodonik
patent: 3421335 (1969-01-01), Becker
patent: 4310475 (1982-01-01), Leva
Nojima Hisatake
Nojima Youko
Miles Tim
Yuugen Kaisha Parasight
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