单晶硅生产废水回用处理的设计实例  

Design Example of Wastewater Reuse Treatment in Monocrystalline Silicon Production

作　　者：岳志芳 岳丽芳 杨海燕[1] 韩珍 王彦隽 薛博 YUE Zhi-fang;YUE Li-fang;YANG Hai-yan;HAN Zhen;WANG Yan-jun;XUE Bo(Vocational and Technical College of Inner Mongolia Agricultural University,Baotou 014109,China;School of Civil Engineering,Tangshan University,Tangshan 063000,China;China Yalong Development Company Limited,Sanya 572000,China)

机构地区：[1]内蒙古农业大学职业技术学院,内蒙古包头014109 [2]唐山学院土木工程学院,河北唐山063000 [3]三亚亚龙湾开发股份有限公司,海南三亚572000

出　　处：《安徽化工》2024年第6期103-107,共5页Anhui Chemical Industry

基　　金：2022年度内蒙古自治区高等学校科学技术研究项目(NJZY22551);内蒙古农业大学职业技术学院科技创新团队项目(TDE202307)。

摘　　要：针对单晶硅生产废水悬浮物、COD浓度高,可生化性差的特点,分别设立污水处理站和纯水处理站。污水处理站采用粗格栅-高效沉淀池-水解酸化池-曝气池-MBR池工艺处理生产废水;纯水处理站采用全膜法工艺处理污水处理站部分出水。工程运行结果表明,污水处理站出水水质达到《城市污水再生利用城市杂用水水质》(GB/T 18920—2002)车辆冲洗标准,并将一部分出水回用于园区内部。纯水制备站出水电导率(25℃)在0.01 ms/m以下,SiO_(2)含量在0.01 mg/L以下,满足《分析实验室用水规格和试验方法》(GBT 6682—2008)一级标准,可回用于企业生产车间。In view of the characteristics of monocrystalline silicon production wastewater,this project has established a sew⁃age treatment station and a pure water treatment station.The sewage treatment station adopts the process of coarse grille-high efficiency sedimentation tank-hydrolysis acidification tank-aeration tank-MBR tank to treat production wastewater and the effluent quality reaches the"Urban Wastewater Recycling and Urban Miscellaneous Water Quality"(GB/T 18920—2002)vehicle washing standard.The sewage treatment station recycles part of the effluent into the park.The pure water treatment station adopts the full membrane process to treat another part of the effluent of the sewage treatment station.The effluent quality of the pure water treatment station meets the first-level standard of"National Standard for Water for Analyti⁃cal Laboratory"(GBT 6682—2008),and is reused in the production workshop of the enterprise.

关 键 词：单晶硅生产废水 高效沉淀 水解酸化 MBR 全膜法 

分 类 号：X781[环境科学与工程—环境工程]