INFEWS N/P/H2O: Development of Sustainable Nutrient Extraction and Recovery Devices (NERDs) for Municipal and Agricultural Wastewater

PI姓名：Lee Blaney建议编号：1706819营养物污染与国家和全球问题错综复杂地联系在一起，包括水、能源、食品、政治和经济安全。在这个项目中，PI将开发、优化和测试创新的养分提取和回收设备(NERD)，以有效地从城市和农业废弃物中回收富含氮和磷的化肥产品。回收的肥料将接受重金属和新出现的关注污染物(如抗生素、激素等)的评估。以防止其他人类和生态健康问题，如内分泌干扰和抗生素耐药性。这项研究的总体目标是开发、测试和优化基于Donnan膜原理的从城市污水、废弃活性污泥和农业废物中回收磷、氮和钾的工艺。NERD反应器通过利用跨离子交换膜的电化学势梯度，选择性地浓缩和回收营养物质。PIE将系统地研究NERD的几个方面：(1)从明确定义的溶液中回收磷、镁、铵和钾的容量和速度，(2)以间歇和连续流动模式从合成废水中选择性地回收鸟粪石和鸟粪石，以生产出具有可定制的氮磷钾比的肥料，以及(3)NERD过程化学在从实际废水出水、废弃活性污泥和动物粪便中回收养分的应用，以及对传统污染物和新兴污染物的共同回收进行评估。这个项目的变革性源于团队-S对养分回收的全新创新方法。他们的工艺对能源、化学物质和水的低要求表明，对于发达国家和发展中国家的城市污水处理厂和农业运营来说，NERDS将是一个有吸引力的选择；此外，该团队认为这项新技术也可以用于磷的修复。这项工作的重要性源于需要一种新的方法来捕获和循环利用氮和磷，以防止饮用水资源的污染，保护环境系统和水生栖息地，并防止渔业、捕虾和旅游业收入的损失。

PI Name: Lee BlaneyProposal Number: 1706819 Nutrient pollution is intricately tied to national and global issues, including water, energy, food, political, and economic security. In this project the PI will develop, optimize, and test innovative nutrient extraction and recovery devices (NERDs) to effectively recover fertilizer products rich in nitrogen and phosphorus from urban and agricultural waste streams. The recovered fertilizers will be assessed for heavy metals and contaminants of emerging concern (e.g., antibiotics, hormones, etc.) to prevent other human and ecological health concerns, such as endocrine disruption and antibiotic resistance. The overall goal of this research is to develop, test, and optimize a Donnan membrane principle-based process for recovery of phosphorus, nitrogen, and potassium from municipal wastewater, waste activated sludge, and agricultural waste. NERD reactors selectively concentrate and recover nutrients by exploiting electrochemical potential gradients across ion exchange membranes. The PI will systematically investigate several aspects of NERDs: (1) the capacity and rate of phosphorus, magnesium, ammonium, and potassium recovery from well-defined solutions, (2) the selective recovery of struvite and potassium struvite from synthetic wastewaters in batch and continuous flow modes to generate fertilizers with customizable nitrogen-to-phosphorus-to-potassium ratios, and (3) the application of NERD process chemistry to recover nutrients from real wastewater effluent, waste activated sludge, and animal manures and assessment of the co-recovery of traditional and emerging contaminants. The transformative nature of this project stems from the team?s completely innovative approach to nutrient recovery. The low energy, chemical, and water requirements of their process suggest that NERDs will be an attractive option for municipal wastewater treatment plants and agricultural operations in the developed and developing world; furthermore, the team believes that this novel technique can also be employed for phosphorus remediation. The significance of this work stems from the need for a new approach to capture and recycle nitrogen and phosphorus to prevent pollution of drinking water resources, protect environmental systems and aquatic habitat, and preclude loss of revenue streams from fishing, shrimping, and tourism industries.