| 摘要 |
<p>The procedure for the treatment of wastewater of a light metal foundry, comprises pre-cleaning the wastewater by separation of first pollutants through separation of solid material- and/or light phases and by filtration of second pollutants through ultra-filtration, and carrying out a further separation of the wastewater by reverse osmosis in low pollutant permeate and pollutant rich retentate. The permeate is used as a part of form-separating materials, as cooling water or washing water and is cleaned by adsorption process and/or irradiation process. The procedure for the treatment of wastewater of a light metal foundry, comprises pre-cleaning the wastewater by separation of first pollutants through separation of solid material- and/or light phases and by filtration of second pollutants through ultra-filtration, and carrying out a further separation of the wastewater by reverse osmosis in low pollutant permeate and pollutant rich retentate. The permeate is used as a part of form-separating materials, as cooling water or washing water and is cleaned by adsorption process and/or irradiation process. The thermally pre-treated retentate is separated in an evaporator. The wastewater comprises organic substances, a form- separating materials with oil-water-emulsions, lubricating oils, heat carrier oils, piston lubes and hydraulic media. An independent claim is included for a plant for the treatment of wastewater of a light metal foundry.</p> |
