西安市污水土地处理系统水力负荷的模拟分析

本研究以西安地区长期的气象资料和土壤资料为基础，利用美国农业部自然资源保护局所推荐的田间水管理模型DRAINMOD，对不同灌溉制度和田间排水条件下，污水处理系统的水力负荷进行了模拟；并对模型输入参数的敏感性进行了分析。结果表明，地面排水情况对系统的处理能力影响不大，采取少灌、勤灌的灌溉制度，能够增加系统的污水处理量。与目前污灌情况相比较，西安地区所推荐的污水灌溉量大致与在不考虑田间排水情况下，模型计算的年处理量持平。

Simulation of hydraulic capacity of waste water land treatment system

The DRAINMOD model was applied to simulate the hydraulic capacity of a wastewater land treatment system in Xi'an, China.The impacts of field drainage condition and irrigation scheduling on annual load of wastewater were analyzed.The simulation results showed that the surface drainage condition has little effect on the annual load of wastewater.The treatment capacity can be improved if the irrigation is more frequent with less amount.