Abstract:

Aiming at the problems of removing refractory organics and high ammonia nitrogen from middle and old aged landfill leachate, the simultaneous degradation process of refractory organics and nitrate nitrogen has been brought forward. The influences of nitrate nitrogen load, temperature, pH, and the dosage of nutritious substance on the removing effect have been investigated. The results show that all the factors above have remarkable influences on system removing capability. When pH is 6.5 to 7.5, temperature 30 ℃, and nitrate nitrogen load 0.08 kg/(m³·d), the system status has reached the highest efficiency.

Key words: landfill leachate, reefractory organics, high-nitrogen, simultaneous degradation technology

摘要：

针对中老龄垃圾渗滤液中难降解有机物与高氨氮去除的难题, 提出了难降解有机物与硝酸盐氮的同步降解技术。通过试验考察了硝氮负荷、温度、pH及营养物质投加量等因素对系统去除效能的影响。结果表明, 硝氮负荷、进水pH、温度及营养物质投加量对系统处理效能的影响显著, 当pH为6.5~7.5, 温度为30 ℃, 硝氮负荷为0.08kg/(m³·d)时, 系统状况最佳。

关键词: 垃圾渗滤液, 难降解有机物, 高氮, 同步降解技术

CLC Number: 

• X703.1