波形潜流人工湿地在贵阳农村的应用研究

Application of wavy subsurface flow constructed wetland in rural areas of Guiyang

【目的】探讨波形潜流人工湿地在贵阳农村的应用效果,为农村生活污水治理提供参考。【方法】设计7格波形潜流人工湿地,选用当地易得的废弃土砖、碎石、煤渣和沙土作填料处理农村生活污水,收集的农村生活污水经过收集管网首先进入厌氧池后通入波形潜流人工湿地,采样分析化学耗氟量(CODcr)、总氮(TN)和总磷(TP)等水样指标。【结果】CODcr、TN、TP的出水平均浓度为39.00、3.70、0.22 mg/L,平均去除率分别为83.00%、75.00%、91.00%。出水水质达到《城镇污水处理厂污染物排放标准》(GB18918-2002)一级排放标准,对P有很好的去除效果。【结论】波形潜流人工湿地工艺简单、无需动力消耗、管理容易,是农村地区生活污水处理的一种有效处理方式。

[Objective]Application of wavy subsurface flow constructed wetland in rural areas of Guiyang was studied to provide references for the rural sewage treatment in Guiyang. [ Method ] Seven plots of the wavy subsurface flow constructed wetland were designed, which were filled with waste adobe, gravel, coal cinder, and sand. The rural sewage flew into the anaerobic pool by the pipe network,then entered to the wavy subsurface flow constructed wetland. CODcr, TN, TP and other indicators of water samples were observed and analyzed. [Result]The results showed that the average concentra- tion of effluent CODcr, TN and TP was 39.00 rag/L, 3.70 mg/L and 0.22mg/L, and their average removal rate was 83.00%, 75.00% and 91.00%. Effluent quality reached the class I criteria specified in Discharge Standards of Pollutants for Munici- pal Wastewater Treatment Plants（GB 18918-2002）. Phosphor was effectively removed. [Conclusion]Wavy subsurface flow constructed wetland is an effective way for sewage treatment in rural areas because it is simple to operate, easy to manage and power consumption free.