Performance of a novel HABR-CFASR system for the biological treatment of mixed printing and dyeing wastewater (MPDW)
Performance of a novel HABR-CFASR system for the biological treatment of mixed printing and dyeing wastewater (MPDW)
复制标题
用于印染混合废水 (MPDW) 生物处理的新型 HABR-CFASR 系统的性能
DOI：
10.1080/19443994.2013.813005
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发表时间：
2014-08-01
影响因子：
1.1
通讯作者：
Sun, Hong-Jie
中科院分区：
文献类型：
--
作者：
Hu, Dong-Xue;Cui, Min-Hua;Sun, Hong-Jie
混合印染废水（MPDW）的特征在于低浓度的化学需氧量（COD;平均约1,000 mg/L）、高比例的柠檬酸盐组分、低COD/SO42-比（约1.0）和高pH（约8 - 10，无需调节）。本研究采用厌氧折流板反应器（HABR）与错流好氧污泥反应器（CFASR）相结合的生物系统，成功地处理了工业区排放的MPDW。以真实的MPDW作为HABR-CFASR系统的进料。在启动阶段，系统具有较低的有机负荷率为0.66和0.45公斤COD/（m3中心点d）的HABR和CFASR，分别。在稳定阶段，这些分别增加到2.03和1.00 kgCOD/（m（3）中心点d）。通过在实验过程中以降低的剂量添加H2SO4来降低HABR流入物的pH。在HABR中HRT为12 h，CFASR中HRT为20 h后，大部分组合处理工艺的最终出水稳定在100 mg-COD/L和20 mg-BOD/L以下。硫酸盐去除率达到17.59%，COD/SO42-比值在1.0左右变化，与硫酸盐负荷（Ns）无关，其在1.5和2.5 kgSO（4）（2-）/（m（3）中心点d）之间变化。GC/MS分析表明，HABR处理后，有机化合物的数量和类型显着下降。
Mixed printing and dyeing wastewater (MPDW) is characterized by a low-strength chemical oxygen demand (COD; average of around 1,000 mg/L), a high fraction of recalcitrant components, a low COD/SO42- ratio (approximately 1.0), and a high pH (about 8-10 without adjustment). In this study, a biological system that combined a hybrid anaerobic baffled reactor (HABR) and a cross flow aerobic sludge reactor (CFASR) was successfully used to treat MPDW that was discharged from an industrial zone. The HABR-CFASR system was fed with real MPDW. In the start-up stage, the system had low organic loading rates of 0.66 and 0.45 kg COD/(m(3)center dot d) for the HABR and CFASR, respectively. These increased to 2.03 and 1.00 kgCOD/(m(3)center dot d), respectively, in the steady stage. The pH of the HABR influent was reduced by adding H2SO4 at a decreased dosage over the course of the experiment. Most of the final effluent from the combined treatment process was stable below 100 mg-COD/L and 20 mg-BOD/L after 12 h-HRT in the HABR followed by 20 h in the CFASR. The sulfate removal rate reached 17.59%, and the COD/SO42- ratio varied slightly around 1.0, regardless of the Ns (sulfate loading rate), which varied between 1.5 and 2.5 kgSO(4)(2-) /(m(3)center dot d). A GC/MS analysis demonstrated that the amount and types of organic compounds declined significantly after the HABR treatment.