| Abstrakt: |
Treatment and reuse of wastewater from polyester dyeing houses is examined. Many dyeing houses have installed effluent treatment plants. However, some are unable to achieve the COD specifications consistently. Consequently, many of them are paying heavy fines. Existing wastewater treatment process, meanwhile, is expensive because it consumes huge amounts of lime, ferrous sulphate and adsorbents. For a number of dyeing houses, it is impossible to regenerated activated carbon after its exhaustion. It is believed that some dyeing houses tend to bypass activated carbon filter. Thus, it was felt necessary to treat wastewater samples in laboratory with economics and reusable additives. Rock dust, vermicastings, and lime were tried because of capacity to remove COD from aqueous solutions, their low cost and usability of their sludges. |
