Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Maintaining environment nondestructive to metal
Patent
1997-02-03
1999-03-02
Bhat, Nina
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Maintaining environment nondestructive to metal
422 13, 422122, 422123, 422171, 422173, 423243, C23F 1104, C23F 1106, A62B 708, B01D 5000
Patent
active
058766626
ABSTRACT:
An odor control system for removing hydrogen sulfide from a gas stream. In a first chamber, the gas stream is initially treated with NaOH at low pH for removal of about 70% of the H.sub.2 S. Unreacted NaOH and the reaction product Na.sub.2 S flow into a first sump while the initially treated gas stream flows into a second chamber, fluidly connected to a second sump. In the second chamber, the gas stream is scrubbed with a solution of NaOH and NaOCl for scrubbing of the remaining H.sub.2 S before the cleaned gas is exhausted to atmosphere. From the second chamber, unreacted NaOH and NaOCl, together with reaction products sulfur, Na.sub.2 SO.sub.4 and Na.sub.2 S flow into the second sump. The contents of the two sumps are flushed out separately by adding make up water to each of them. Each sump has a separate drain and each drain empties into a common drain where the Na.sub.2 S from the first sump reacts with unreacted NaOCl from the second sump to produce sulfur and Na.sub.2 SO.sub.4. These products are then washed from the common drain into a sewer.
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Bhat Nina
US Filter/RJ Environmental, Inc.
Waters William Patrick
LandOfFree
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