Method for dewatering of sludge from a pulp， paper or board making process
收藏国家林业和草原科学数据中心2023-02-12 更新2024-03-07 收录
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资源简介：
A method is disclosed for dewatering of sludge from a pulp， paper or board making process， such as deinking sludge， including obtaining of an aqueous sludge including an aqueous phase and a fibre material suspended in the aqueous phase. The sludge is subjected to a pre-thickening step， where a first part of the aqueous phase is removed from the sludge and to a pressing step， where a second part of the aqueous phase is removed from the sludge， thereby obtaining a dry pressed sludge. Before or at the pre-thickening step a polymer composition having a charge density of at the most 1.7 meq/g， preferably at most 1.5 meq/g， more preferably at most 1.1 meq/g， is added to the sludge.
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-12
