A laboratory-scale pilot plant of moving bed biofilm reactor coupled with membrane bioreactor (MBBR-MBR) was studied with regard to wastewater treatment in the textile industry, and the reuse feasibility of treated water was investigated. The pilot plant comprised two connected parts: an aerobic tank filled with carriers and a submerged membrane tank. The MBBR-MBR system reduced the hydraulic retention time to 1 day, which is very promising compared with conventional biological treatment in the textile industry. The removal efficiency of chemical oxygen demand reached 93%, which is almost the maximum for a biological process treating this type of wastewater, as well as the colour removal performance, which achieved 85%. Additionally, 99% of total suspended solids were removed due to filtration. Furthermore, new dyeing processes reusing the treated water were performed. The quality of the new dyed fabrics with treated water was compared with reference fabrics. Colour differences between new dyed fabrics and reference fabrics were found to be within the general requirement of the textile industry (ΔE_CMC(2:1) < 1). The reuse of treated water in new dyeing processes is beneficial both for the industry and for the environment, because the textile sector is an intensive water consumer during both the dyeing and finishing processes.

中文翻译：

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移动床生物膜反应器耦合膜生物反应器处理纺织废水回用

以移动床生物膜反应器与膜生物反应器（MBBR-MBR）联用的实验室规模中试装置对纺织工业废水处理进行了研究，并研究了处理后水回用的可行性。中试设备由两个相连的部分组成：一个装有载体的好氧罐和一个浸没式膜罐。MBBR-MBR系统将水力停留时间减少到1天，与纺织行业的常规生物处理相比，这是非常有前景的。化学需氧量去除效率达到93%，几乎是处理此类废水的生物工艺的最大值，颜色去除性能达到85%。此外，通过过滤去除了 99% 的总悬浮固体。此外，重新使用处理过的水进行了新的染色工艺。用处理过的水对新染色织物的质量与参考织物进行比较。发现新染色织物和参考织物之间的颜色差异在纺织行业的一般要求范围内（ΔE _CMC(2:1) < 1)。在新的染色过程中重新使用处理过的水对工业和环境都有好处，因为纺织部门在染色和整理过程中都是用水密集型的。