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| Study on the Start-up of EGSB Reactor and the Characteristics of Granular Sludge in the Treatment of Bamboo Pulp Wastewater |
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| DOI：10.11980/j.issn.0254-508X.2017.06.006 |
| Key Words:expanded granular sludge blanket(EGSB) reactor bamboo pulp wastewater start up granular sludge |
| Fund Project:四川省教育厅项目14ZB0215；四川理工学院人才引进项目2010XJKRL004。 |
| Author Name | Affiliation | | 刘 春 | 四川理工学院造纸科学与技术研究所,四川自贡,643000 | | 管秀琼 | 四川理工学院造纸科学与技术研究所,四川自贡,643000 | | 张 岚 | 四川理工学院造纸科学与技术研究所,四川自贡,643000 | | 何俊辰 | 四川理工学院造纸科学与技术研究所,四川自贡,643000 | | 张永康 | 四川理工学院造纸科学与技术研究所,四川自贡,643000 | | 王 刚 | 四川理工学院造纸科学与技术研究所,四川自贡,643000 | | 周斯妤 | 四川理工学院造纸科学与技术研究所,四川自贡,643000 |
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| Abstract:The organics degradation process and start-up law of an anaerobic expanded granular sludge bed (EGSB) reactor for treating bamboo pulping wastewater were analyzed. Meanwhile, the characteristics of anaerobic granular sludge during the reactor’s start-up period were also investigated. The results showed that EGSB reactor had good effect on the organic pollutant removal of bamboo pulping wastewater during wastewater property changed and concentration increased gradually. At the later stage of start-up, the removal rate of CODCr was above 68.5%, the pH value of effluent was 7.8～8.0 slightly higher than influent, and the volume load of reactor was 13.50 kg COD/(m3·d). In addition, bamboo pulping wastewater also had the better biodegradability after treatment by EGSB reactor due to its higher B/C ratio, which increased by 46.9% compared to raw water. Compared with inoculated sludge at the later stage of start-up, the total solid content of granular sludge in reactor showed a decreasing trend and reduced gradually along the height of reactor. While sludge activity improved largely, regarding to the VS/TS ratio of sludge, 82.4% of central zone>73.5% of the top>56.7% of the bottom>44.6% of inoculated sludge. At the same time, the greatly reduction of calcium content and increase of magnesium, iron, zinc contents all played a positive role in perfecting the sludge characteristics in the reactor and construction of its microbial communities． |
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