Liquid purification or separation – Flow – fluid pressure or material level – responsive – Float
Utility Patent
1999-04-30
2001-01-02
Drodge, Joseph W. (Department: 1723)
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Float
C096S109000, C096S122000, C096S135000, C210S151000, C435S266000, C435S294100, C435S297100
Utility Patent
active
06168711
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a water supply and drainage type microorganic deodorizing system for decomposing offensive odor constituents of exhaust gas through the agency of microorganisms.
2. Description of the Related Art
With a well known deodorizing system a of this type as shown in
FIG. 6
, exhaust gas g containing offensive odor constituents is fed below a deodorizing layer c of a tower main body b, filled with activated charcoal as a deodorizing agent, water soluble offensive odor constituents are removed from the exhaust gas g by showering thereon with process water w supplied via a water supply system wr from a water reservoir d, installed at the bottom of the tower main body b, into which process water is replenished as necessary, and the exhaust gas subjected to a primary treatment is passed through the deodorizing layer c for deodorization.
However, in the deodorizing system a of this type, since water soluble offensive odor constituents are removed simply by showering with process water w in the form of droplets on the exhaust gas g, water insoluble offensive odor constituents, which have not been removed, will ascend in the tower main body b, reaching the activated charcoal in the deodorizing layer c.
While the water insoluble offensive odor constituents are adsorbed to pores of the activated charcoal, and the exhaust gas g is deodorized and emitted into the atmosphere, clogging of numerous pores of the activated charcoal occurs due to adsorption of the water insoluble offensive odor constituents to the pores with the result that the functions of the activated charcoal for adsorption and deodorization are degraded. Consequently, the deodorizing system described above has a drawback of requiring periodic replacement of the activated charcoal.
Furthermore, although the activated charcoal has strength in of adsorbing and holding methanethiol, sulfur compounds such as methyl sulfide and the like, alcohol, fatty acids, hydrocarbon halide, aliphatic hydrocarbon, aromatic hydrocarbon, ester, and the like, it hardly adsorbs formic acid having one carbon atom, formaldehyde methyl alcohol, propane, methyl chloride, and the like while it has little strength in adsorbing ammonia, hydrogen sulfide, etc.
Consequently, the system has had a drawback that sufficient deodorization of exhaust gas containing various offensive odor constituents could not be achieved because it had been difficult for parts of the offensive odor constituents to be adsorbed to the activated charcoal even if other parts thereof could be adsorbed.
SUMMARY OF THE INVENTION
It is therefore an object of the invention to provide a water supply and drainage type microorganic deodorizing system capable of achieving sufficient deodorization of various offensive odor constituents of exhaust gas, maintaining excellent deodorizing capacity thereof by preventing degradation in adsorptive capacity of a deodorizing agent due to clogging thereof.
In light of the problems encountered in the case of conventional deodorizing systems such as clogging of a deodorizing agent, degradation in the adsorptive capacity thereof, and difficulty with removal of some types of offensive odor constituents, the invention provides a water supply and drainage type microorganic deodorizing system, wherein two staged deodorization chambers are provided in a tower main body, each chamber having a different absorbing agent filled therein, and an exhaust gas inflow duct is secured at the lower part of a lower deodorization chamber, whereby after offensive odor constituents are gradually absorbed by absorbing agents and microorganisms in the lower and upper deodorization chambers, the offensive odor constituents are deodorized by decomposition and treatment.
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Matsumoto Ryouzo
Teramachi Masayoshi
Drodge Joseph W.
Flynn ,Thiel, Boutell & Tanis, P.C.
Touyoudainamu Co., Ltd.
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