摘要
南京某硫铁矿因矿坑塌陷区及厂区积存废水造成外环境锰、氟、氨氮污染问题而被列为省级督办项目。为迅速切断污染源,保证下游水环境安全,实施了应急处理工程,处理规模为1500 m^(3)/d。采用“预曝气+一级混凝沉淀+二级混凝沉淀+深度除氟+尾水调整”处理工艺,出水锰、氟及氨氮浓度分别稳定达到2、1.5及1.5 mg/L以下,应用效果良好。该工程采用分组模块化设计,在施工时间及空间上具有很大的优越性,可为突发水环境污染应急处理提供参考。
A pyrite mine in Nanjing was listed as a provincial supervision project,due to the manganese,fluorine and ammonia nitrogen pollution caused by the wastewater accumulated in mine subsidence area and the factory.In order to cut off the pollution source and ensure the safety of the downstream water environment,an emergency treatment project was implemented with the treating capacity of 1500 m~3/d.Using a combined process of pre-aeration,primary coagulation sedimentation,secondary coagulation sedimentation,deep defluoridation,and tail water adjustment,the effluent concentrations of manganese,fluorine and ammonia nitrogen were always less than 2 mg/L,1.5 mg/L and 1.5 mg/L,respectively,indicating a good removal performance.The project adopts group modular design,which has great advantages in the construction time and space,and can provide reference for emergency treatment of sudden water environmental pollution.
作者
辛路
杨尧
徐祥
宋荻
XIN Lu;YANG Yao;XU Xiang;SONG Di(Academy of Environmental Planning&Design Co.Ltd.of Nanjing University,Nanjing 210008,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2023年第20期138-142,共5页
China Water & Wastewater
关键词
硫铁矿矿坑塌陷区
高浓度铁、锰、氟废水
特种除氟树脂
尾水调整
污泥分质处理
pyrite mine subsidence area
high concentration of iron,manganese and fluoride wastewater
special defluoridation resin
tail water adjustment
sludge separation treatment
