The Influence of Stock Consistency on the Pollution Load in Washing Process
| Autor: | Tiantian Chen, Youming Li, Lirong Lei, Mingzhu Hong, Qihui Sun, Yi Hou |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | BioResources, Vol 11, Iss 1, Pp 2214-2223 (2016) |
| Druh dokumentu: | article |
| ISSN: | 2214-2223 1930-2126 |
| DOI: | 10.15376/biores.11.1.2214-2223 |
| Popis: | The influences of stock consistency on the kappa number, residual alkali of pulp, flow direction of lignin, chemical oxygen demand, oxidation with dichromate (CODCr), and five-day biochemical oxygen demand (BOD5) in effluents were investigated in a washing process. Compared with 15% stock consistency, 35% stock consistency could lead to a decrease of at least 25% in the consumption of washing water while cutting 75.27% and 46.29% of CODCr and BOD5 in washing effluents, respectively. Moreover, the residual lignin in effluents were reduced greatly from 39.35 g·t-1 to 12.76 g·t-1, which will be beneficial to treatment of washing and bleaching effluent. All the results showed that a higher stock consistency in the washing process could decrease the consumption of washing water, the generation of pollution, and the toxicity in bleaching effluent. |
| Databáze: | Directory of Open Access Journals |
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