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首页> 外文期刊>Water Science and Technology >From sewage water treatment to wastewater reuse. One century of Paris sewage farms history
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From sewage water treatment to wastewater reuse. One century of Paris sewage farms history

机译：从污水处理到废水回用。巴黎一百年污水处理厂的历史

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The irrigation fields of Paris have been used for 100 years. Their soils mainly contain heavy metals in the topmost layer. Metals come from raw sewage as well as from digested sludge of biological treatment plants which have been diluted for years in raw water. Vegetables that are cultivated in the irrigation fields concentrate metals but their average contents, however, are lower than the recommended limit values. Some vegetables concentrate more specifically one type of metal. Corn seeds accumulate less metal than green vegetables. The SIAAP keeps operating irrigation fields by delivering clariflocculated water with a low metal content from the new Seine Centre plant, with the purpose of keeping some 2,000 ha of green zone in an otherwise heavily constructed area and to prevent a metal release from the soil should irrigation be interrupted. Maintaining irrigation fields also relieves the biological treatment plant and then contributes to preserve the quality of the Seine river, especially in summer. [References: 13]
机译：巴黎的灌溉领域已经使用了100年。他们的土壤在最顶层主要含有重金属。金属来自原污水以及生物处理厂的消化污泥，这些污泥已在原水中稀释了多年。在灌溉田中种植的蔬菜会浓缩金属，但其平均含量低于建议的限值。一些蔬菜更特别地集中一种金属。玉米种子中的金属累积量少于绿色蔬菜。 SIAAP通过从塞纳河中心的新工厂输送金属含量低的澄清絮凝水来保持灌溉场的运营，目的是在原本建设较重的区域中保留约2,000公顷的绿色区域，并防止灌溉时土壤中的金属释放被打断。维持灌溉土地还可以减轻生物处理厂的负担，进而有助于维护塞纳河的水质，尤其是在夏天。 [参考：13]

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