Kim Y, Lee D R, Giokas D
Dept of Environmental Engineering, Hanseo University, Seosan, Chungnam 356-820, Korea.
Water Sci Technol. 2004;50(6):79-86.
In this paper, reuse potentials of the secondary effluents as irrigation water was evaluated through field sampling trips. Water quality parameters significantly deviating from its guidelines were Total coliform bacteria and organic matter. Even though nutrients are not regulated in Korea, their removal would be required because they have been a barrier for secondary effluent irrigation through governmental intervention. The results of treatment study with aquatic ponds show that in spite of its poor biodegradability, organic matter in soluble form was reduced by 20% during 10 days of HRT. On the other hand, reduction of nutrients was remarkable. On average 85% of total nitrogen and 89% of total phosphorus were removed, respectively, which abates the worries of farmers for overgrowth or reduction in crop yield. However, coliform bacteria, although slightly reduced due to their propagation at the constructed wetlands still need further treatment.
在本文中，通过实地采样考察评估了二级出水作为灌溉用水的回用潜力。明显偏离其指导标准的水质参数是总大肠菌群细菌和有机物。尽管韩国对营养物质没有进行管控，但由于通过政府干预，营养物质已成为二级出水灌溉的障碍，因此仍需要去除。水塘处理研究结果表明，尽管溶解性有机物的生物降解性较差，但在10天的水力停留时间内，溶解性有机物减少了20%。另一方面，营养物质的减少非常显著。平均分别去除了85%的总氮和89%的总磷，这减轻了农民对作物过度生长或减产的担忧。然而，大肠菌群细菌虽然由于在人工湿地中的繁殖而略有减少，但仍需要进一步处理。
