LIUJian,LIYuan-qiang,LIFeng,et al.Effect of Filamentous Algal Sclerotium on Construction of Salt-tolerant Microalgal-Bacterial Granular Sludge[J].China Water & Wastewater,2025,41(19):126-132.
Effect of Filamentous Algal Sclerotium on Construction of Salt-tolerant Microalgal-Bacterial Granular Sludge
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第19期
Page:
126-132
Column:
Date of publication:
2025-10-01
- Keywords:
- microalgal-bacterial granular sludge; filamentous algal sclerotium; salt-tolerant; particle size
- Abstract:
- Microalgal-bacterial granular sludge (MBGS) has been widely concerned in the treatment of salt-containing wastewater due to their obvious advantages of energy saving and carbon reduction. However, the MBGS has a long tolerance time to salinity, which leads to poor treatment effect, and hindering the popularization and application of this technology. Therefore, the rapid construction method and salt-tolerant stability of algal bacteria particles under salinity stress need to be further improved. In this study, under low carbon conditions, filamentous algal bacteria particles were cultured and combined with salt-tolerant algal bacteria particles as nuclei to explore the effect of treatment of salt-tolerant algal bacteria system constructed by filamentous algal sclerotium with different particle sizes. It was found that stable salt-tolerant binding algal bacteria particles could be formed quickly within a week with granular filamentous algal bacteria as the nucleus. In addition, the particle size of filamentous algal sclerotium had no significant effect on the removal of ammonia nitrogen (NH4+-N) from salt-containing wastewater, but had a significant effect on the removal of COD and PO43--P. Among them, the salt?tolerant algal sclerotium formed by filamentous algal sclerotium with a particle size of 1.0-1.7 mm had the best removal effect.
Last Update:
2025-10-01