摘要
采用“配水曝气区-砾石滩-芦苇区1-水生植物区-芦苇区2”的组合表面流湿地处理化工区污水厂尾水。工程正式运行以来,水质净化效果方面,湿地出水中化学需氧量(COD)、氨氮(NH_(3)-N)、总氮(TN)、总磷(TP)分别为(28.9±5.82)、(0.195±0.093)、(2.83±1.00)、(0.145±0.055)mg/L,去除率分别为(12.62±12.74)%、(20.70±21.11)%、(49.53±13.05)%、(44.52±14.55)%;COD主要在砾石滩去除,NH_(3)-N、TN、TP主要在芦苇区2去除;氯化物质量浓度3 200 mg/L时,湿地仍能正常运行。生态效应方面,人工湿地昆虫种类超过60种,鸟类种数接近35种,生物多样性显著提高。
The treatment of tail water from wastewater treatment plant in chemical industry park was carried out using combined surface flow wetland of“water distribution and aeration zone-gravel zone-No. 1 reed zone-aquatic plant zone-No. 2 reed zone”. Since formal operation,in terms of water purification effects,the average concentration of COD,NH_(3)-N,TN and TP in the effluent water were(28.9±5.82)mg/L,(0.195±0.093)mg/L,(2.83±1.00)mg/L and(0.145±0.055)mg/L respectively,the average removal rates were(12.62±12.74)%,(20.70±21.11)%,(49.53±13.05)% and(44.52±14.55)% respectively. COD was mainly removed in the gravel zone,while NH_(3)-N,TN,TP were mainly removed in the No. 2 reed zone. Wetland could run normally when the chloride concentration was 3 200mg/L. In terms of biological effect,there were more than 60 species of insects,and close to 35 species of birds in the wetland. The biodiversity was significantly improved.
作者
陈功
CHEN Gong(Tongji Architectural Design<Group>Co.,Ltd.,Shanghai 200092,China)
出处
《工业水处理》
CAS
CSCD
北大核心
2022年第5期169-175,共7页
Industrial Water Treatment
关键词
组合表面流湿地
化工区
污水厂尾水
工艺设计
combined surface flow wetland
chemical industry park
tail water
process design