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在流量和入口度可变的情况下,长期使用富含Ca和Fe的排水过材料去除

Lorenzo Pugliese¹, Eriona Canga¹, Hans Chr Bruun Hansen²

¹Department of Agroecology, Aarhus University, Blichers Allé 20, Tjele 8830, Denmark.

|November 5, 2023

概括

基于铁的过材料,特别是铁氧化颗粒 (CFH),有效地从农业排水中去除 (P),在长期内优于基于的选择.

科学领域:

环境科学环境科学
水质管理水质管理
农业工程农业工程

背景情况:

来自农田的 (P) 排放有助于地表水的缩.
边缘技术,如紧型过系统,对于减轻P排放至关重要.
了解长期的过材料性能对于有效的水质保护至关重要.

研究的目的:

评估五种不同的过材料的长期除效率.
为了在不同的条件下比较铁基和基过材料的性能.
评估流量和P度对过器效率的影响.

主要方法:

模拟排水的柱体实验是在696天内进行的.
测试了五种过材料:烧焦藻土 (CDE),氧化铁颗粒 (CFH),贝,石灰岩和Filtralite-P.
对人工排水 (pH6) 应用了可变的流量和入口P度.

主要成果:

铁基材料 (CFH和CDE) 显示出比基材料更高的P保留率.
铁氧化颗粒 (CFH) 在高度下达到99%的P去除,在低度下达到98%.
石灰岩的P保持率较低 (25%在高负载下),而过石-P和海对P度敏感.

结论:

铁氧化颗粒 (CFH) 在长期从农业排水中去除方面非常有效.
过材料的选择显著影响了去除效率,以铁为基础的选项通常优越.
CFH对P负载变化的敏感性最低,表明在各种现场条件下性能强.

关键词:

农业水排水农业水过器材料的使用方法长期的移除效率长期的移除效率的损失的损失灵敏度分析是一种灵敏度分析.

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