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再循环和液压加载率对肥料行业废水中的氨和酸盐回收的影响

I Dewa Ayu Agung Warmadewanthi¹, Nurani Ikhlas², Febrianda Damayanti¹

¹Department of Environmental Engineering, Faculty of Civil, Environmental, And Geo-Engineering, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo, Surabaya, 60111, Indonesia.

|October 9, 2023

概括

这项研究利用流化床反应器 (FBR) 从肥料废水中优化了营养回收. 高循环和低负载率最大限度地恢复了和酸盐,产生了斯特鲁维特晶体.

科学领域:

环境化学环境化学
废水处理废水处理
结晶工程结晶工程

背景情况:

肥料行业的废水含有高度的和酸盐,造成环境风险.
营养回收对于可持续的废水管理和资源循环性至关重要.

研究的目的:

确定从肥料废水中回收和的最佳操作条件.
在回收过程中调查 struvite 晶体的形成,形态和结构.
为了评估连续流化床反应堆 (FBR) 系统的效率.

主要方法:

使用连续流化床反应堆 (FBR) 进行营养回收.
测试了各种循环比 (3, 6, 9) 和液压负载率 (0.39, 0.59, 0.79 L/min).
使用MgCl2作为沉剂,其 [Mg2+]: [PO43-] 摩尔比为1.5:1.

主要成果:

实现了55.71%的酸盐和49.69%的氨回收,循环率为9和负载率为0.39L/分钟.
通过SEM-EDX分析确定了 struvite 作为主要的晶体产品 (80%的组成).
证明了更高的循环比率和更低的加载率可以提高营养恢复效率.

结论:

营养恢复的最佳条件包括高循环和低液压负载率.
在FBR系统中延长废水保留时间可以改善营养物质的回收.
开发的结晶方法有效地处理肥料废水,并恢复宝贵的营养素,如 struvite.

关键词:

氨的含量是多少?氨的含量是多少?液化床反应堆的反应堆是液化床反应堆的反应堆.液压装载率是指液压装载率.酸盐是一种酸盐.循环回收率是指循环回收率.斯特鲁维特的结晶化

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