CAJ | 학술논문

采用模拟有机废水,研究了分段组合式厌氧反应器(Compartmentalized Anaerobic Reactor, CAR)的纵向分布特性.试验结果表明:CAR 具有很高的容积效能,其容积负荷、容积去除率和容积产气率分别为100.5 gCOD?(L?d)?1、84.4 gCOD?(L?d)?1和57.0 L?(L?d)?1.CAR 具有显著的容积效能纵向分布特征,在高负荷工况下,区段Ⅰ、Ⅱ、Ⅲ(反应器下、中、上)的容积负荷与容积效能分别为327.6、221.2、153.3 gCOD?(L?d)?1与106.4、67.9、32.0 gCOD?(L?d)?1;与常负荷工况相比,高负荷工况下容积效能的纵向分布特征弱化,有利于均衡容积负荷、挖掘各区段的反应潜能.CAR具有显著的基质浓度纵向分布特征,与常负荷工况相比,高负荷工况下纵向 VFA 和 COD 浓度分布特征弱化,区段Ⅰ、Ⅱ、Ⅲ的 VFA 浓度与 COD 浓度之比显著增大,需重视 VFA 抑制所致的“雪崩”效应.
채용모의유궤폐수,연구료분단조합식염양반응기(Compartmentalized Anaerobic Reactor, CAR)적종향분포특성.시험결과표명:CAR 구유흔고적용적효능,기용적부하、용적거제솔화용적산기솔분별위100.5 gCOD?(L?d)?1、84.4 gCOD?(L?d)?1화57.0 L?(L?d)?1.CAR 구유현저적용적효능종향분포특정,재고부하공황하,구단Ⅰ、Ⅱ、Ⅲ(반응기하、중、상)적용적부하여용적효능분별위327.6、221.2、153.3 gCOD?(L?d)?1여106.4、67.9、32.0 gCOD?(L?d)?1;여상부하공황상비,고부하공황하용적효능적종향분포특정약화,유리우균형용적부하、알굴각구단적반응잠능.CAR구유현저적기질농도종향분포특정,여상부하공황상비,고부하공황하종향 VFA 화 COD 농도분포특정약화,구단Ⅰ、Ⅱ、Ⅲ적 VFA 농도여 COD 농도지비현저증대,수중시 VFA 억제소치적“설붕”효응.
The vertical distribution of Compartmentalized Anaerobic Reactor (CAR) performances was studied in a lab-scale experiment. The results indicate that the CAR has a high volumetric efficiency, and its organic loading rate, volumetric COD removal rate and volumetric biogas production are 100.5 gCOD?(L?d)?1, 84.4 gCOD?(L?d)?1 and 57.0 L?(L?d)?1, respectively. CAR shows an obvious vertical distribution of volumetric efficiency, e.g. the organic loading rate and volumetric COD removal rate of part I, II and III (bottom, middle and top) of the CAR at the high loading rate are 327.6, 221.2, 153.3 gCOD?(L?d)?1 and 106.4, 67.9, 32.0 gCOD?(L?d)?1 respectively. Compared with that at common loading rates, the vertical distribution of volumetric efficiency at high loading rates becomes less obvious, which is helpful to homogenize the organic loading rate along the reactor and exploit the reaction potential of the whole reactor. CAR also shows an obvious vertical distribution of substrate concentration. Compared with that at common loading rates, the vertical concentration gradients of VFA and COD are smaller at high loading rates, and the ratios of VFA to COD in part I, II, III increased significantly. More attention should be paid to the serious inhibition caused by VFA at high loading rates.