为研发适用于我国农村的分散式污水处理装置,采用厌氧+跌水曝气+人工湿地组合工艺对农村生活污水进行处理,考察组合工艺对COD、TN、TP、NH4+-N、SS 5个常规指标的去除效果及对各指标的沿程去除情况。结果表明,组合工艺对COD、TN、TP、NH4+-N和SS的平均去除率分别为74.5%、 57.2%、 59.5%、 59.00%和91.6%。人工湿地对COD、TN、TP和NH4+-N的去除率最大,分别为31.0%、36.7%、43.9%和30.0%;而厌氧反应池对SS去除贡献率最大,为40.3%。该组合工艺处理农村生活污水具有良好的处理效果,且装置运行能耗低,利于推广应用。
To develop the decentralized sewage treatment devices suitable for rural areas in China, a combined process of anaerobic tank,drop-aeration and constructed wetland was developed to treat the rural domestic sewage. The removal rates of five conventional indexes(COD, TN, TP, NH4+-N and SS) and their changes along the process were studied. The results showed that their removal rates were 74.5%, 57.2%, 59.5%, 59.00% and91.6%, respectively. The constructed wetland had the highest removal rates of COD, TN, TP and NH4+-N, which were 31.0%, 36.7%, 43.9% and 30.0%, respectively, while anaerobic tank had the largest SS removal rate of 40.3%. The combined process has a good performance on the rural domestic sewage treatment with low energy consumption, which is conducive to its popularization and application.
Techniques and Equipment for Environmental Pollution Control
rural domestic sewage treatment
decentralized sewage treatment process