有机碳源缺乏对成熟好氧颗粒污泥性能的影响

doi:10.6040/j.issn.1672-3961.0.2017.050

Abstract

Abstract: Physicochemical properties, microbial activities, extracellular polymeric substances(EPS)and structure stability of mature aerobic granules were studied to investigate the effect of organic carbon source absence on the stability and nitrification activity of aerobic granules, the capability of upholding shock of aerobic granules was tested. Results showed that microbial activity of ammonia oxidizing bacteria(AOB)and nitrite oxidizing bacteria(NOB)increased, and high nitrifying activity achieved on 60 d under the absence of organic carbon source. Under the absence of organic carbon source, particle size of aerobic granules decreased. Aerobic granules became compacter with loss of filamentous bacteria and increase of spherical bacteria. EPS mass concentration and the mass ratio of polysaccharide and proteins increased. Under the absence of organic carbon source, mature aerobic granules didnt disintegrate completely and had good capability of upholding shock. This study verified the potential of aerobic granules treating wastewater under the absence of organic carbon source, and provided fundamental basis for the practical application of aerobic granules.

Key words: aerobic granules, organic carbon source, extracellular polymeric substance, microbial activity, physicochemical properties

CLC Number:

X703.1

YUAN Shasha, YU Haibo, GAO Mingming, WANG Xinhua. Performance of mature aerobic granules under the absence of organic carbon source[J].JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2017, 47(4): 124-130.

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Performance of mature aerobic granules under the absence of organic carbon source

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