Krull R
Institute of Biochemical Engineering, Technical University of Braunschweig, Gaussstrasse 17, 38106 Braunschweig, Germany.
Water Sci Technol. 2005;52(10-11):299-307.
A method for the in-house treatment of partial wastewater flows and the recycling of treated process water into the textile finishing process was developed in order to recycle effluents from textile finishing industry and feed them back into the production process. The method is based on a two-stage biological anaerobic-aerobic process to split colouring wastewater agents and to degrade organic substances contained in the water as well as a chemical stage to remove the remaining color of the water with the help of ozone. In the framework of a research and development project a demonstration plant for a treatment capacity of 1440 m3 per working day was installed and started in a textile finishing company. At the plant, a wastewater flow and a recycling flow are treated separately in two different treatment lanes. Approximately 40% of the total wastewater flows, i.e. 576 m3/d are treated in the wastewater lane, and a maximum of 60% of total wastewater, i.e. 864 m3/d are treated in the recycling lane. Thanks to the preliminary treatment of wastewater flows, which are discharged into the municipal sewage works, a reduction of average COD levels in the sewage works effluents could be achieved.
为了回收纺织后整理行业的废水并将其重新引入生产流程，开发了一种内部处理部分废水流并将处理后的工艺水回用于纺织后整理工艺的方法。该方法基于两阶段生物厌氧 - 好氧工艺，用于分解染色废水剂并降解水中所含的有机物质，以及化学阶段，借助臭氧去除水中残留的颜色。在一个研发项目的框架内，一家纺织后整理公司安装并启动了一座处理能力为每日1440立方米的示范工厂。在该工厂中，废水流和循环水流在两条不同的处理通道中分别进行处理。大约40%的总废水流，即576立方米/天，在废水通道中处理，而最多60%的总废水，即864立方米/天，在循环通道中处理。由于排入市政污水处理厂的废水流经过预处理，污水处理厂出水的平均化学需氧量（COD）水平得以降低。
