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An advanced anaerobic expanded granular sludge bed (AnaEG) for the treatment of coal gasification wastewater

机译：先进的厌氧膨胀颗粒污泥床（AnaEG）用于处理煤气化废水

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A state-of-the-art advanced anaerobic expanded granular sludge bed (AnaEG) was developed for the anaerobic treatment of coal gasification wastewater (typical industrial wastewater with poor biodegradability and high toxicity). Three batch tests were conducted to check the efficiency of the reactor. The reactor was run for 330 days using acidification, with a final hydraulic retention time (HRT) of 48 hours. With an influent concentration of chemical oxygen demand (COD) of 1400 mg L-1, 320 mg L-1 total phenol, and 150 mg L-1 volatile phenol, the effluent COD, total phenol, and volatile phenol could be decreased to 800 mg L-1, 200 mg L-1 and 40 mg L-1, respectively. The AnaEG shows a COD removal efficiency of 50%, with a loading rate of 0.806 (kg COD per m(3) per day), a removal rate of 0.357 (g COD per day), total phenol removal efficiency of 50%, and a volatile phenol removal efficiency of 80%. Besides being able to remove 70-95% of organic matter from the wastewater, this technology generates less sludge. Finally, scanning electron microscopy (SEM) revealed long-chain filamentous bacteria; coccus and rod-shaped bacteria were the dominant microorganisms. A CH4 production rate of 227.23 (ml CH4 per L per day) during a loading rate of 626.25 (mg COD per L per day) and a removal rate of 87.68 (mg COD per L per day) was observed. The significant reduction in the amount of sludge produced therefore reduces the sludge management cost. It does not have to reflux; this equipment is simple as it requires less accessory equipment and lower power consumption, and produces a high quality effluent. All the results demonstrate that the AnaEG could be used efficiently for the treatment of coal gasification wastewater containing high COD and phenol concentration.
机译：开发了一种先进的先进厌氧膨胀颗粒污泥床（AnaEG），用于厌氧处理煤气化废水（生物降解性差，毒性高的典型工业废水）。进行了三批测试以检查反应器的效率。使用酸化反应器运行330天，最终水力停留时间（HRT）为48小时。如果进水化学需氧量（COD）浓度为1400 mg L-1、320 mg L-1总酚和150 mg L-1挥发性酚，则废水COD，总酚和挥发性酚可降至800毫克L-1、200毫克L-1和40毫克L-1。 AnaEG的COD去除效率为50％，负载率为0.806（kg mD / m（3）/天），去除率为0.357（g COD /天），总苯酚去除率为50％，并且挥发性苯酚去除效率为80％。除了能够从废水中去除70-95％的有机物外，该技术还减少了污泥的产生。最后，扫描电子显微镜（SEM）揭示了长链丝状细菌。球菌和棒状细菌是主要微生物。观察到在负载率为626.25（每天每升mg COD）和去除率为87.68（每天每升mg COD）的条件下，CH4的产生率为227.23（ml CH4每升/天）。因此，产生的污泥量的显着减少降低了污泥管理成本。它不必回流;该设备很简单，因为它需要更少的辅助设备和更低的功耗，并产生高质量的废水。所有结果表明，AnaEG可以有效地用于处理COD和苯酚浓度高的煤气化废水。

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