| 摘要 |
<p>The colour and/or odour of water or soil contaminated with organic waste is reduced by addition of bromine, hypobromous acid, bromamine or any precursors which form any one of the above on addition to water. Preferably the colour/odour reducing agent is bromine, and is generated in situ from sodium bromide and sodium hypochlorite. The waste water may be a dyebath effluent, such as produced by textile dyeing operations, the dyebath containing an oxidisable contaminant such as a reactive dyestuff. The dyestuff may also be, for example, an anionic, direct, disperse or vat dye. Alternatively the contaminant may comprise pentachlorophenol.</p> |
