Abstract:

The printing and dyeing wastewater is treated by designed A/O MBR system. Some indexes(COD, color,SS, turbidity and so on) are inspected through continuous running of four stages. The decided optimum runningconditions of A /O MBR(condition of immersion) system are HRT9 - 10 h, DO2 - 3 mg /L. The final values aftertreatment are COD≤100 mg /L, chroma 2 - 16 times, turbidity≈0, SS≈0, pH 7 - 8.5. The results indicate thetreatment effect of A/O MBR(condition of immersion) system is good and A/O system can increase the biochemicaltreatment performance of wastewater and make the later MBR treatment easier and make printing and dyeingwastewater arrive at the standard.

Key words: anaerobic /aerobic process, membrane bioreactor, printing and dyeing wastewater

摘要：

设计了一套A/OMBR系统处理印染废水，通过四个阶段的连续运行，对其COD、色度、SS、浊度等指标进行监测，确定最佳运行条件为HRT9～10h,DO2～3mg/L，在此条件下处理后可使印染废水的COD≤100mg/L、色度2～16倍、浊度≈0、SS≈0、pH7～8.5。结果表明A/OMBR系统费用低、效果好，其中A/O系统可提高印染废水的可生化性，利于后续MBR的处理,最终使印染废水实现达标排放。

关键词: 厌氧/好氧工艺, 膜生物反应器, 印染废水

CLC Number: 

• X703.1

• X791