First experiences with the new biological wastewater treatment plant at Huttenwerke Krupp Mannesmann

摘要

In a coke oven byproduct plant with a gas treatment plant there is a formation of a process water. This process water consists of surplus water from the tar separation as well as effluent from the NH3/H2S-scrubber At HKM, the former Mannesmann Huttenwerke in Duisburg-Huckingen, a coke plant was commissioned in 1959 for the first time This plant started with phenosolvan process facilities for eliminating the toxic phenol two' the surplus water by producing raw phenol oil The further preparation of the process water is made by steam distillation in ammonia-still and deacidifier.