Performance of ammonia adsorption by aerobic granular sludge

doi:10.3969/j.issn.0438-1157.2014.03.025

CIESC Journal ›› 2014, Vol. 65 ›› Issue (3): 942-947.DOI: 10.3969/j.issn.0438-1157.2014.03.025

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Performance of ammonia adsorption by aerobic granular sludge

WANG Changwen, ZHAO Baihang, LI Jun, LIU Guoyang

Key Laboratory of Beijing for Water Quality Science & Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China

Received:2013-06-13 Revised:2013-07-24 Online:2014-03-05 Published:2014-03-05
Supported by:
supported by the National Natural Science Foundation of China (51078008) and the Natural Science Foundation of Beijing (8122005).

好氧颗粒污泥吸附氨氮性能

王昌稳, 赵白航, 李军, 刘国洋

北京工业大学建筑工程学院, 北京市水质科学与水环境恢复工程北京市重点实验室, 北京 100024

通讯作者: 李军
作者简介:王昌稳（1987—），男，博士研究生。
基金资助:
国家自然科学基金项目（51078008）；北京市自然科学基金项目（8122005）。

Abstract

Abstract: Ammonia adsorption by a adsorbent, aerobic granular sludge cultured in a lab-scale SBR, and influencing factors were studied at (25±1)℃ and in 0.1 mol·L^-1 Trise-HCl buffer reaction system. Comparing with flocculent activated sludge the aerobic granular sludge exhibited higher adsorption capacity. At initial ammonia concentration of 30 mg·L^-1, the adsorption capacity was 1.83 and 1.18 mg NH₄⁺-N·(g VSS)^-1 for granular sludge and flocculent sludge, respectively. It decreased with biomass concentration because of screen effect between cells. The effect of salinity (NaCl) on the ammonia adsorption was significant, i.e. it decreased with increase of salinity. The results indicated that the ammonia adsorption by granular sludge should not be neglected, more investigation would be needed.

Key words: adsorption, aerobic granular sludge, ammonia, extracellular polymeric substances

摘要： 在水温（25±1）℃、0.1 mol·L^-1 Trise-HCl缓冲液为反应体系并不断通入高纯氮气的厌氧条件下，以小试SBR反应器培养的好氧颗粒污泥为吸附剂，考察了好氧颗粒污泥对氨氮的吸附作用及其影响因素。好氧颗粒污泥表现出比絮体活性污泥更大的对氨氮的吸附容量。当初始氨氮浓度为30 mg·L^-1时，颗粒污泥与絮体污泥的吸附容量分别为1.83 mg NH₄⁺-N·（g VSS）^-1和1.18 mg NH₄⁺-N·（g VSS）^-1。由于细胞之间的遮蔽效应，污泥对氨氮的吸附容量随污泥浓度的升高而降低。盐度（NaCl）显著影响颗粒污泥对氨氮的吸附效果：盐度越高，污泥吸附容量越小。试验结果表明，污泥对氨氮的吸附作用不可忽略且需要进一步深入研究。

关键词: 吸附, 好氧颗粒污泥, 氨氮, 胞外聚合物

CLC Number:

X703

WANG Changwen, ZHAO Baihang, LI Jun, LIU Guoyang. Performance of ammonia adsorption by aerobic granular sludge[J]. CIESC Journal, 2014, 65(3): 942-947.

王昌稳, 赵白航, 李军, 刘国洋. 好氧颗粒污泥吸附氨氮性能[J]. 化工学报, 2014, 65(3): 942-947.

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Performance of ammonia adsorption by aerobic granular sludge

好氧颗粒污泥吸附氨氮性能

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