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发明名称
草浆纸业污水快速处理工艺
摘要
一种草浆纸业污水快速处理工艺,蒸煮黑液用干燥草料固化后焚烧;洗浆黑液用硫酸酸化,先以斜网过滤,再絮凝、沉淀,出水与消化剂混合,经1~2小时沉淀,上清液与筛选段的排水混合再处理;筛选段的排水,过滤回收短细纤维,滤液与消化后的废液合并,经絮凝、沉淀后达标排放。使用本发明,工程投资额低,运行费用少。处理后的排放水质符合国家环保局标准。处理全过程,只需4小时,净化设施占地少,运行管理简便。
申请公布号
CN1339629A
申请公布日期
2002.03.13
申请号
CN00113628.3
申请日期
2000.08.22
申请人
奉明明
发明人
奉明明;何旭龙;王国亮;奉威威
分类号
D21C11/04
主分类号
D21C11/04
代理机构
代理人
主权项
1、草浆纸业污水快速处理工艺,其特征是:将造纸工艺过程中产生的蒸煮黑液,用造纸草料在粉碎过程中产生的干燥废渣与其混匀,浸泡24小时,将吸渍饱和的草渣干化焚烧,烧渣经水解、苛化、沉淀,上清液补充碱回用;洗浆黑液用20%的工业硫酸酸化,控制酸化终点PH值为2~4,以斜网过滤,滤下的黑液加8ppm的助凝剂PAM,絮凝、沉淀,生产木素产品,网上废物干化后燃烧,出水与消化剂混合,经1~2小时沉淀,沉泥干化外运,上清液与筛选段的排水混合再处理;筛选段的排水经斜网过滤,网上短、细纤维回用,滤液加入2pmPAC,絮凝2~6分钟,经2~4小时沉淀后,达标外排。
地址
410071湖南省长沙市芙蓉路湖南日报社政法部
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