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（NH₃-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，NH₃-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。

关键词: 组合表面流湿地, 化工区, 污水厂尾水, 工艺设计

Abstract:

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，NH₃-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 NH₃-N，TN，TP were mainly removed in the No. 2 reed zone. Wetland could run normally when the chloride concentration was 3 200 mg/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.

Key words: combined surface flow wetland, chemical industry park, tail water, process design

中图分类号: 

• X703