Liquid purification or separation – With gas-liquid surface contact means – With separator
Utility Patent
1999-04-29
2001-01-02
Upton, Christopher (Department: 1724)
Liquid purification or separation
With gas-liquid surface contact means
With separator
C210S167050, C210S175000, C210S195100, C210S196000, C210S617000
Utility Patent
active
06168712
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an apparatus for the biological treatment of waste fluid from the coating process.
More particularly, the present invention relates to an apparatus for the biological treatment of waste fluid from the coating process comprising: a biological treatment vessel filled with carriers immobilizing microorganism useful for the treatment of waste fluid from the coating process, a tank in which said biological treatment vessel is set, a heating means to heat said waste fluid in said tank, an aeration means to blow air into said waste fluid, a filter for filtration of said waste fluid having been treated, and a return pass to return filtrate of said waste fluid to said tank.
DESCRIPTION OF THE PRIOR ART
In the coating process, waste fluid containing paint is generated. Hitherto said waste fluid is collected in a tank and an alkaline agent is added to said waste fluid to neutralize and form sediment. Said sediment is separated from said treated waste fluid and said separated sediment is usually treated by reclaiming, dehydration and combustion and the like.
Said tank should be periodically washed by workers, nevertheless awfully bad smell is generated from said tank and said washing work must be done in very bad environment.
Further, some contaminating materials from paint in said waste fluid such as solvents, resins and the like are difficult to be settled completely and remain in said treated waste fluid.
Still further, it is difficult to separate said sediment completely from said treated waste fluid and small pieces of said sediment remain in said treated waste fluid.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to present an apparatus which treats waste fluid from the coating process and solves the problem of bad smell from the tank treating said waste fluid.
A further object of the present invention is to present an apparatus which treats waste fluid from the coating process which can remove contaminating material substantially completely from said waste fluid.
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Hamada Masaaki
Kubo Kimito
Okazaki Taizo
Cooper & Dunham LLP
Dowden Donald S.
Kenko Sangyo Co., Ltd.
Upton Christopher
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