| 摘要 |
<p>1481089 Purifying waste water STAMICARBONBV 8 Oct 1974 [8 Oct 1973] 43555/74 Heading ClC Waste water containing dye residues, detergents, textile fibre residues, fats or proteins is purified in two stages wherein the waste is first biologically purified to give a water having a COD of 300-450 mg/litre and then treated by adsorption on activated carbon.</p> |
