发明名称 |
Apparatus for treating waste water oxidation ponds to abate malodors |
摘要 |
A process and an apparatus for treating waste water in oxidations ponds, oxidation ditches, or other bodies of water in a waste water treatment facility to abate the malodors caused by the presence of volatile contaminants. In the process, a water stream is withdrawn from the body of waste water and contacted with an air stream in an air-water contact apparatus. The water stream is thereby aerated and stripped of potentially odor causing volatile contaminants and an off-gas stream is produced containing the stripped volatile contaminants. At least a portion of the aerated and stripped water stream is returned to the body of waste water to inhibit anaerobic decomposition of organic impurities. The off-gas stream is passed through a fixed bed type biofilter comprising a porous filter bed provided with appropriate microorganisms so that the volatile contaminants in the off-gas stream come into contact with the microorganisms and are biologically metabolized into environmentally innocuous substances rather than being emitted into the ambient air.
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申请公布号 |
US5480538(A) |
申请公布日期 |
1996.01.02 |
申请号 |
US19940297379 |
申请日期 |
1994.08.29 |
申请人 |
MONSANTO ENVIRO-CHEM SYSTEMS, INC. |
发明人 |
MCCOMBS, DAVID E.;DOUGALD, COLIN D.;RAPP, MARTIN L. |
分类号 |
B01D19/00;B01D53/85;C02F1/20;(IPC1-7):C02F3/06 |
主分类号 |
B01D19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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