螺旋对称流厌氧反应器床层颗粒污泥金属元素时空变化  

Temporal and Spatial Variation of Metal Elements of Granular Sludge in the Spiral Symmetric Stream Anaerobic Bioreactor

作　　者：Awad Abdelgad 李岗 陈小光 柳建设 

机构地区：[1]东华大学环境科学与工程学院国家环境保护纺织工业污染防治工程技术中心,上海201620

出　　处：《中国沼气》2016年第5期3-6,共4页China Biogas

基　　金：国家自然科学基金(51208087);教育部新教师基金(20120075120001);中央高校基金项目

摘　　要：金属元素对厌氧颗粒污泥(AGS)的颗粒化、致密性和沉降性能等具有重要作用。文章以UASB反应器为参比,研究了螺旋对称流厌氧反应器(SSSAB)床层AGS中金属元素的时空变化规律。结果表明:SSSAB床层AGS中金属元素总量在时间上先升后稳,由接种污泥的18.81 mg·g-1SS,逐步提升并稳定在40 mg·g-1SS左右,稳定运行后的SSSAB反应器COD平均去除率达86.74%;SSSAB床层AGS中Ca和Cr等金属元素在空间上呈现梯度分布,它们与反应器高度呈正相关;金属元素总量在空间上也呈现梯度分布,它与反应器高度呈负相关,而UASB反应器则无明显的梯度分布规律。Metal elements play an important role in the granulation, density of the anaerobic granular sludge （AGS） and its settling performance. With a UASB reactor as the comparison, the temporal and spatial variations of metal elements of AGS in the bed of Spiral Symmetric Stream Anaerobic Bioreaetor （ SSSAB ） were studied. The results showed that the total a- mount of metal elements of the AGS in the SSSAB reactor was firstly raised and then stabilized, in which the AGS metal el- ements in inoculation sludge gradually increased and stabilized from 18.81 mg~ g-1SS to around 40 mg ~ g-1SS. The aver- age COD removal efficiency of the SSSAB reached to 86.74% during the stable operation. The calcium and chromium of AGS in sludge bed of SSSAB presented a spatial gradient distribution, which were positively correlated with the height of the reactor. The total amount of metal elements also showed a spatial gradient distribution, but it was negatively correlated with the height of the reactor, while the UASB reactor has no obvious gradient distribution.

关 键 词：螺旋对称流厌氧反应器 厌氧颗粒污泥 金属元素 时空变化 梯度分布 

分 类 号：X703[环境科学与工程—环境工程]