Modelling the Biofiltration of Styrene Laden Air Streams

✍ Scribed by A M Gerrard; A V Metris; J Paca

• Book ID: 101386541
• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: German
• Weight: 63 KB
• Volume: 73
• Category: Article
• ISSN: 0009-286X
• DOI: 10.1002/1522-2640(200106)73:6<600::aid-cite6004444>3.0.co;2-#

✦ Synopsis

A novel process designed to eliminate by thermal oxidation organic compounds creating chemical oxygen demand (COD) in aqueous waste liquors with low calorific value is presented. The process complies with stringent environmental regulations. In the process the liquor is oxidised by pure oxygen in a reactor pressurised to 10 bars. The liquor is atomised into small droplets and combusted at a temperature higher than 1200 o C. An in-built direct contact evaporator makes it possible to oxidise aqueous solutions with a total dissolved solids (TDS) content of 30 ± 40 %. Inorganic components of the liquor are extracted as concentrated brine. Heavy metals contained in the brine are separated as insoluble carbonates embedded in a larger amount of calcium carbonate. The off-gas contains about 75 ± 90 % carbon dioxide. The equipment can handle chloride-containing liquids and the risk for synthesis of chlorinated organic compounds is largely eliminated.