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在沙过器中进行光减弱和调动,处理现场废水

Mian Wang¹, Fanjian Zeng¹, Siwei Chen¹

¹Department of Civil Engineering, College of Engineering and Applied Sciences, Stony Brook University, Stony Brook, NY, 11794, USA; New York State Center for Clean Water Technology, Stony Brook University, Stony Brook, NY, 11794, USA.

|August 8, 2024

概括

沙子过器显示,污水池污水中的去除有限,而老旧的沙子显示出更好的衰减. 降雨导致大量的泄漏,突显了废水处理系统需要频繁监测的必要性.

科学领域:

环境工程环境工程
水质管理水质管理
废水处理废水处理

背景情况:

沙过器在清除池污水 (STE) 中的 (P) 的有效性有限.
废水中高度的质威胁到饮用水的质量,并导致了肥胖.
气候变化引发的洪水增加了人们对沙过器P泄漏的担忧.

研究的目的:

为了研究处理 STE 的沙过器中的缩和泄动力学.
了解不同负载条件和模拟降雨下的P去除机制.
为在现场废水处理系统中设计有效的P清除/回收模块提供见解.

主要方法:

使用新的和老化的沙子的板式柱子被用来研究P衰减和漏.
在标准 (1.2加d−1英尺−2) 和低 (0.6加d−1英尺−2) 的加载速率下应用了 STE.
模拟的降雨量 (1560毫米h-1) 用于评估和列中的P出.

主要成果:

在标准负载下,P去除效率在24-32%之间,在低负载下,在35-53%之间.
在新的和老化的沙柱中都发生了完整的P突破.
陈旧的沙子 (≥5年) 显示出较高的P衰减 (20.645.3毫克P kg-1),这是由于累积的Mg,Al,Ca和Fe.
模拟降雨泄漏了80-97%的减弱P,在前2-6小时内度最高.
酸盐是废水和液中占主导地位的P物种.

结论:

沙过器具有有限的长期去除能力,而P浸是一个重大问题,特别是在降雨事件期间.
由于矿物积累,老化的沙子增强了P衰减,但仍然可以观察到突破.
频繁的现场监测对于在沙系统中准确的长期P去除估计至关重要.

关键词:

泄漏泄漏是一种泄漏.流动性流动性流动性监控监控监控监控清除的方法是去除.污水池的废水流出水.

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The Phosphorus Cycle

The Phosphorus Cycle

Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.