TOP® - Wet Air Oxidation for Spent Caustic
Spent caustic liquors from ethylene manufacturing and petroleum refining
are some of the nastiest wastewater the industry must deal with. These
liquors are odorous, highly colored and contain sodium sulfides,
mercaptans, phenols and emulsifed hydrocarbons, so they do not respond
to traditional treatment.
The most effective on-site treatment
of spent caustic is TOP® - Wet Air Oxidation for Spent Caustic which can
achieve the oxidation of pollutants as sulfide to soluble thiosulfate,
sulfite and sulfate. The treated stream is then suitable for bio
treatment in the plants wastewater treatment system.
Wet Air Oxidation is a proven technology currently being used by numerous olefin plants. 3V Tech manufactures and supplies turn-key modular systems based on 3V Green Eagle's (sister company) TOP® Wet Oxidation technology, acknowledged as a Best Available Technique (B.A.T.) for industrial wastewater and sludge treatment by the European Union IPPC Commission.The TOP® technology is best known for treating liquid wastes in the following manner
the wet phase heavy organic molecules are oxidized by air at high
temperature and high pressure levels creating a process similar to a
flame less burning.
- Complex organic molecules are oxidized and become simple, biodegradable molecules.
- Odor and color will be permanently removed
3V Green Eagles's TOP® - Wet Air Oxidation technology for Spent Caustic:
- 1990 Best Reparative Technology award from ENEA (the EU delegate for Italy)
- 2006 BAT (Best Available Techniques) award from the EU-IPPC for O.F.C.s (Organic Fine Chemicals)
- Has been extensively tested on an industrial scale
able to reduce COD levels by approximately 70%. The remaining COD is
detoxified, fully decolored and almost entirely biodegradable, allowing
it to be further processed in a biological plant