农业环境科学学报2012，Vol.31Issue(1)：166-171,6.
垂直流-水平潜流一体化人工湿地对菜地废水的净化效果
Removal Efficiencies of Wastewater from Vegetable Land by the Integrated Vertical-flow and Horizontalflow Constructed Wetlands
摘要
Abstract
Untreated wastewater with poor quality from vegetable lands in Dongsheng Farm, Panyu District, Guangzhou City is discharged directly into macrohydrophyte ponds and eventually flows into adjacent rivers, which have seriously polluted the water resources and threatened the safety of drinking water for local residents. In this study, the integrated vertical-flow and horizontal-flow constructed wetlands were developed to treat the wastewater for water quality improvement. The nine-month operation results indicated that the average removal rates of COD, NH4+-N, and TP were 56.40%, 79.09%, and 79.79%, respectively. The average concentrations of COD, NH4+-N, and TP from the effluent were 9.45 mg·L-1,0.47 mg·L-1 and 0.06 mg·L-1, respectively, which were all reached the Level- Ⅱ of "Environmental Quality Standards for Surface Water" (GB3838-2002). The average removal rate of TN was low with only 35.08%. By supplying plant carbon such as sugarcane leaves to the wetland system, the average removal rate of TN was improved significantly. However, as the external carbon source dosage continued to increase, the average removal rate of TN was gradually decreased. Our experiments showed that the optimal supplemental amount of plant carbon was 1.62 kg·m-3 of sugarcane leaves, which has lead to the average removal rate of TN by 80.85% and to the decrease of the effluent average concentration of TN from 3.06 mg·L-1 to 0.90 mg·L-1.关键词
菜地废水/水生植物塘/垂直流-水平潜流/净化效果/甘蔗叶/碳源Key words
wastewater of vegetable plot/macrohydrophyte ponds/integrated vertical-flow and horizontal-flow/purification effect/sugarcane leaves/carbon source分类
资源环境引用本文复制引用
朱太涛,崔理华,林伟仲,黄睦凯..垂直流-水平潜流一体化人工湿地对菜地废水的净化效果[J].农业环境科学学报,2012,31(1):166-171,6.基金项目
家自然科学基金项目(40871110,41071214) （40871110,41071214）
广东省科技计划项目(2010B031800007,2009A020101005) （2010B031800007,2009A020101005）
广州市科技支撑计划项目(2008ZI-E621) （2008ZI-E621）
广东省海洋渔业局项目(B201001C03). （B201001C03）
