南方农村分散养猪废水生态处理技术研究

Study on the Integrated Ecological Treatment Technology for Southern Rural Scattered Piggery Wastewater

针对我国南方农村分散式小型养殖场排放污水特点,构建生物滤池和人工湿地组合式生态处理系统,并于2012年7月-2014年6月连续运行。结果表明,在进水NH_4^+-N、TN、TP的质量浓度和COD平均分别为489、635、37.9 mg/L和651 mg/L的情况下,出水平均分别为10.9、23.7、1.36 mg/L和38.0 mg/L,平均去除率分别为97.8%、96.4%、96.7%和92.0%。处理后出水中NH_4^+-N、TN、COD和TP等指标全部达到了GB 18918-2002二级标准。该生态组合处理技术能对小型养殖场排放污水进行高效处理,且具有建设运行成本低、管理方法简单等优点,在我国南方农村具有较好的推广应用价值。

Aimed at the characteristics of piggery wastewater discharge in southern rural areas of China, biofilter and constructed wetlands integrated ecological treatment system was constructed, and continuously operated from July 2012 to June 2014. The results showed that, when the average mass concentrations of NH4＋-N, TN, TP and COD in influent were 489, 635, 37.9 mg/L and 651 mg/L respectively, and 10.9, 23.7, 1.36 mg/L and 38.0 mg/L in effluent respectively, and the removal rates were 97.8%, 96.4%, 96.7% and 92.0% respectively. The indexes of NH4＋-N, TN, TP and COD were all met the second level of the GB 18918-2002 after treatment.The integrated ecological system could work efficiently in treating the rural scattered piggery wastewater, and also had merits of low construction and operation costs and simple management method, which have good popularization and application value in the southern rural regions of China.