Method of neutralizing aldehyde-containing waste waters and the

Details Method of neutralizing aldehyde-containing waste waters and the Method of neutralizing aldehyde-containing waste waters and the

1995-10-03

1996-08-13

McCarthy, Neil

Liquid purification or separation

Processes

Chemical treatment

210908, C02F 170

Patent

active

055453368

ABSTRACT:
The present method is capable of completely neutralizing the aldehydes in aldehydic waste waters within about 15 minutes and of producing a non-toxic waste water which then can be disposed of without fear of contamination of drain lines, etc. The method is carried out by contacting aldehyde-containing waste water with a sufficient amount of sodium pyrosulfite to completely neutralize the aldehydes in the waste water within about 15 minutes to non-toxic substances. The contacting is initiated without first adjusting the pH of the waste water and is maintained during the treatment period with agitation of the waste water being treated to assure full neutralization of all parts thereof. The sodium pyrosulfite and its reaction products are non-toxic. No hazard label is required for the sodium pyrosulfite, in contrast to certain conventional waste treating chemicals. The sodium pyrosulfite is a white crystalline powder easily stored, handled, weighed out and used without danger. The sodium pyrosulfite does not generate poisonous gasses, in contrast to sodium bisulfite which off-gasses sulfur dioxide when it is contacted with an acidic environment. The treated waste water in the present method has a pH of about 6-9 and usually is about pH 7 and is ready for disposal without safety precautions.

REFERENCES:
patent: 3909408 (1975-09-01), Ishida et al.
patent: 5380444 (1995-01-01), Ryan et al.

Affiliated with

Also associated with

Rating

Method of neutralizing aldehyde-containing waste waters and the does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of neutralizing aldehyde-containing waste waters and the , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of neutralizing aldehyde-containing waste waters and the will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1046074