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首页> 外文期刊>Journal of Civil Engineering and Science >COD Removal Performance of Fluidized Bed Bioreactor (FBBR) with Support Material of Precipitation Carbonate Calcium (PCC)
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COD Removal Performance of Fluidized Bed Bioreactor (FBBR) with Support Material of Precipitation Carbonate Calcium (PCC)

机译：沉淀碳酸钙（PCC）载体材料对流化床生物反应器（FBBR）的COD去除性能

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The anaerobic digested solid wastewater in an aerobic fluidized bed reactor with precipitation Calcium carbonate as support material was investigated in this work. Fluidization of Precipitation Calcium Carbonate particles is achieved by air velocity which is used in conventional activated sludge process. Fluidization does not need upward flow of recirculated liquid and high air velocity. The fluidized bed bioreactor (FBBR) effluent was studied for alterations in Chemical Oxygen Demand (COD). Continuous flow investigations were conducted with the influent COD at 3000, 5000 and 7000 mg/l in 3hr, 6hr and 12 hr Hydraulic Retention Time (HRT). The filtered COD reduction efficiency for the different wastewater inputs were: 92% for 3000mgCOD/l with 12hr HRT; 90% for 5000mgCOD/l with 12hr HRT; 73% for 5000mgCOD/l with 6hr HRT; 20.9% for 5000mgCOD/l with 3hr HRT; 84% for 7000mgCOD/l with 12hr HRT; and 50.87 for 7000mgCOD/l with 12hr. Results for reactor without support media were: 74% for 3000 mgCOD/l with 12hr HRT; 62% for 5000mgCOD/l with 12hr HRT and 52% for 7000mgCOD with 12hr HRT. Reactor without support media lost its efficiency in short Hydraulic Retention Time (HRT).. This research demonstrated that a fluidized bed reactor with Precipitation Calcium Carbonate support media can be operated to maximize substrate removal. Precipitation Calcium Carbonate as support material can be used for biofilm formation to increase COD removal performance and decrease hydraulic retention time in existent activated sludge wastewater treatment plant.
机译：在以沉淀碳酸钙为载体的好氧流化床反应器中对厌氧消化的固体废水进行了研究。沉淀碳酸钙颗粒的流化是通过传统活性污泥工艺中使用的空气速度实现的。流化不需要再循环液体的向上流动和高空气速度。研究了流化床生物反应器（FBBR）流出物中化学需氧量（COD）的变化。在3小时，6小时和12小时水力停留时间（HRT）中，以进水COD分别为3000、5000和7000 mg / l进行连续流量研究。对于不同的废水输入，过滤后的COD降低效率为：HRT为12小时的3000mgCOD / l为92％; HRT为12小时的5000mgCOD / l为90％; HRT为6小时的5000mgCOD / l为73％; 5000 mgCOD / l（3小时HRT）为20.9％; 12小时HRT时7000mgCOD / l为84％;并在12小时内获得7000mgCOD / l的50.87。没有支持介质的反应器的结果是：74％的HRT为12小时的3000 mgCOD / l; HRT 12小时的5000mgCOD / l为62％，HRT 12小时的7000mgCOD为52％。没有支撑介质的反应器在较短的水力停留时间（HRT）中失去了效率。这项研究表明，具有沉淀碳酸钙支撑介质的流化床反应器可以运行以最大程度地去除底物。沉淀碳酸钙作为载体材料可用于生物膜形成，以提高现有活性污泥废水处理厂的COD去除性能并减少水力停留时间。

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