研究报告
易诚,湛含辉,陈津端,程胜高.搅拌-序批式活性污泥反应器(WSBR)中好氧颗粒污泥的特性研究[J].环境科学学报,2011,31(2):268-275
搅拌-序批式活性污泥反应器(WSBR)中好氧颗粒污泥的特性研究
- Characteristics of aerobic granular sludge in a whisk-sequencing batch reactor(WSBR)
- 基金项目：国家自然科学基金(No.50574111);湖南省科技厅科技计划项目(No.2008FJ3005)
- 作者
- 单位
- 易诚
- 1. 中国地质大学环境学院, 武汉 430074; 2. 湖南环境生物职业技术学院, 衡阳 421005
- 湛含辉
- 湖南工业大学, 株洲 412008
- 陈津端
- 湖南环境生物职业技术学院, 衡阳 421005
- 程胜高
- 中国地质大学环境学院, 武汉 430074
- 摘要：为研究搅拌-序批式活性污泥反应器(WSBR)中好氧颗粒污泥的特性,利用WSBR反应器与传统SBR反应器对好氧活性污泥颗粒化的过程进行了比较.结果表明,在添加同量的聚炳烯酰胺(PAM)条件下,具有合理二次流场的WSBR反应器在4d就可见好氧颗粒污泥,而SBR反应器则在第10d才出现好氧颗粒污泥,且WSBR反应器中好氧颗粒污泥的粒径主要分布在0.9～1.5mm之间,污泥体积指数(SVI)稳定在50mL·g-1左右,颗粒污泥比重增加了0.0509,挥发性悬浮固体(VSS)含量达到81.32%,耗氧速率达1.387mg·min-1·g-1(以O2计),污泥含水率为93.23%.从微生物结构来看,WSBR反应器中的好氧颗粒污泥具有紧密的细菌结构,优于SBR反应器中培养好氧颗粒污泥.表明在合理的二次流条件下,利用PAM混凝沉降原理可以快速地形成良好的好氧颗粒污泥.
- Abstract：In order to study the characteristics of aerobic granular sludge in a whisk-sequencing batch reactor,WSBR,the granulation effects of aerobic active sludge in the WSBRwere compared with the sludge in a traditional SBR. The results indicated that with the same amount of pollyscrylamide,aerobic active sludge was found on4th day in the WSBRwith reasonable secondary flow field,while it was not found in the SBRuntil the 10th day. Moreover,the diameters of most aerobic active sludge found in WSBRwere within the range of 0.9～1.5 mm,SVIwas stabilized about of 50 mL·g-1,the specific gravity of granular sludge was increased by 0.0509,MLVSS/MLSSwas increased to 81.32%,SOURreached 1.387 mg·min-1·g-1 and the percentage of water contained in the sludge reached 93.23%. The compact bacteria structure of aerobic granular sludge found in WSBRwas much better than that formed in the SBR,which indicated that with reasonable secondary flow field,good aerobic granular sludge could be rapidly formed by applying polyscrylamide coagulation sedimentation theory.
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