Fluid sprinkling – spraying – and diffusing – Combining of separately supplied fluids – Serially arranged mixing zones
Patent
1998-10-15
2000-02-29
Morris, Lesley D.
Fluid sprinkling, spraying, and diffusing
Combining of separately supplied fluids
Serially arranged mixing zones
239434, 261DIG42, 210760, B05B 704
Patent
active
060299118
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to an air-ozone mixer and an ozone fog generator used for deodorizing.
BACKGROUND ART
Household waste water from homes and industrial waste water from offices are collected through sewage work to waste water treatment facilities where the waste water is purified through various treatment processes and then is discharged to rivers and/or seas.
On the other hand, various deodorizers are used to suppress diffusion of offensive smell from sewage collected at the waste water treatment facilities.
FIG. 1 illustrates an example of a waste water treatment system or facility where an ozone deodorizer as disclosed in Japanese Utility Model 3002318 is applied. This waste water treatment system comprises an upwardly opened treatment vessel body 1, a cover 2 on the vessel body 1 and an exhaust pipe 4 vertically extending through the cover 2 and having an exhaust fan 3 at its intermediate portion.
The treatment vessel body 1 is buried in the ground in such manner that the cover 2 is positioned near the ground surface. Provided inside the vessel body 1 are pre-treatment, adjustment and aeration vessels 5, 6 and 7.
Sewage to be treated flows from outside into the pre-treatment vessel 5 via a screen 8 which serves to remove relatively large dust and refuse.
The sewage treated in the pre-treatment vessel 5 flows over a weir between the vessels 5 and 6 into the adjustment vessel 6 since new sewage flows from outside into the vessel 5. Likewise, the sewage treated in the adjustment vessel 6 flows over a weir between the vessels 6 and 7 into the aeration vessel 7 since new sewage flows from the pre-treatment vessel 5 into the adjustment vessel 6.
Further, the sewage, which has been purified by the various treatment processes in the vessels 5, 6 and 7 to have BOD (biochemical oxygen demand) and the like values within levels as allowable by laws, regulations and the like, is pumped from the aeration vessel 7 by a pump (not shown) and is discharged to rivers and/or seas.
The ozone deodorizer comprises a filter box 9 for removing particulates and the like in the air through filtration of the air, an oxygen generator 10 for extracting oxygen (O.sub.2) by applying and reducing pressure on the air filtered through the filter box 9, an ozone generator 11 for generating ozone (O.sub.3) by applying high voltage on the oxygen from the oxygen generator 10, a fan 12 for sucking and discharging the air, a discharge pipe 13 extending through the cover 2 such that its upstream and downstream portions are positioned above and below the cover 2, respectively, and a plurality of branch pipes 15 connected to the downstream portions of the discharge pipe 13 and communicated with a space 14 defined by the cover 2 and the treatment vessel body 1.
The above-mentioned filter box 9, oxygen generator 10, ozone generator 11 and fan 12 are arranged outside the treatment vessel body 1. An ozone outlet of the ozone generator 11 and an air outlet of the fan 12 are connected to the upstream portion of the discharge pipe 13.
In the waste water treatment system shown in FIG. 1, actuation of the oxygen generator 10, ozone generator 11, and fan 12 causes mixture of ozone generated by the ozone generator 11 with the air from the fan 12 to flow through the discharge pipe 13 and branch pipes 15 into the space 14 defined by the cover 2 and vessel body 1.
The ozone contained in this mixture oxidizes smell components such as hydrogen sulfide (H.sub.2 S) and ammonia (NH.sub.3) emitted from the sewage to be treated in the vessels 5, 6 and 7 to reduce the offensive smell.
However, half-life of ozone in the atmospheric air is about 13 hours. As is disclosed in the above, reaction rate of oxidation of the smell components emitted from the sewage inside the waste water treatment system is not very high. Relatively long time is required for the reaction of ammonia with ozone so that the reaction may be carried out inefficiently within the limited time.
From these reasons, in the waste water treatment system shown in FIG
REFERENCES:
patent: 2388753 (1945-11-01), Mallmann et al.
patent: 4007120 (1977-02-01), Bowen
patent: 4049552 (1977-09-01), Arff
patent: 4076617 (1978-02-01), Bybel et al.
patent: 5053140 (1991-10-01), Hurst
patent: 5431861 (1995-07-01), Nagahiro et al.
Dazai Hiroshi
Minobe Atsuyoshi
Watanabe Masanori
Ishikawajima-Harima Jukogyo Kabushiki Kaisha
Morris Lesley D.
LandOfFree
Air ozone mixer and ozone fog generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Air ozone mixer and ozone fog generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air ozone mixer and ozone fog generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-675025