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- Title
Treatment of Wood Processing Wastewater by Anaerobic Granular Sludge Process.
- Authors
FANG Yitao; HUANG Zhi; AO Zhengfen; ZHU Shu; NONG Jiajia; SUN Jiacheng
- Abstract
Wood processing wastewater was treated using an anaerobic granular sludge process. The treatment effect on wastewater and the impact on lignin fiber as sludge core were studied under different hydraulic retention times (HRT). The results showed that the removal efficiency of COD increased with the increase of HRT from 2 days to 8 days. When HRT was 8 days, the average COD degradation rate was 52.39%. SEM results also showed that with the increase of HRT, the larger the sludge particles were. In fact, the average particle size of sludge increased from 15 µm to 30 µm with the increase of HRT from 2 days to 8 days. Moreover, lignocellulose was found to be useful as a carrier for anaerobic bacteria. Besides, EPS in sludge was found to be mainly protein, while EEM results showed that with the extension of HRT, the main substances of DOM changed from soluble biological metabolites to aromatic (tyrosine), and the obvious increase of humus-like substances is conducive to the degradation of COD.
- Publication
Environmental Science & Technology (10036504), 2020, Vol 43, Issue 6, p78
- ISSN
1003-6504
- Publication type
Article
- DOI
10.19672/j.cnki.1003-6504.2020.06.011