AIR Option 1: Technology Translation - Moving Reversible Ion Exchange-Membrane (RIX-M) Technology for Desalination into the Market Place: Technology Translation Plan Competition

AIR 选项 1：技术转化 - 将用于海水淡化的可逆离子交换膜 (RIX-M) 技术推向市场：技术转化计划竞赛

• 批准号: 1311758
• 负责人: Arup Sengupta
• 金额: $ 15万
• 依托单位: Lehigh University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-05-01 至 2015-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1311758&HistoricalAwards=false
• 关键词: AIR; Option; Technology; Translation; Moving

This PFI: AIR Technology Translation project focuses on translating ion exchange fundamentals to fill the gap in brackish water desalination through a Reversible Ion Exchange-Membrane (RIX-M) process. The translated technology has the following unique features: increased product water recovery due to reduction in scaling from sulfate and carbonate salts of calcium on the surface of Reverse Osmosis (RO) membranes without requiring addition of any anti-scaling chemicals. Threats of barium sulfate scaling and consequent fouling of membranes, wherever present, may also be avoided. The project accomplishes this goal by integrating a self-regenerated ion exchange system along with the RO process. An appropriately designed mixed bed of anion exchange resins significantly reduce sulfate concentration at the membrane inlet, thus avoiding sulfate precipitation. The reject of the RO membrane process is used to regenerate the anion exchange resins without needing addition of external chemicals. The potential economic impact is expected to be a significant reduction in operating expenses of the desalination plants due to elimination of anti-scaling chemicals. The partnership engages an ion exchange resin manufacturer and an engineering firm to move into the growing brackish water desalination market space globally through validation of the technology under representative conditions. From a business viewpoint, the innovation can also be retrofitted for existing RO plants, thus expanding the market for the proposed technology. From a broader perspective, the proposed work will also lay the basis for an in-land desalination technology which does not create a reject stream containing environmentally objectionable anti-scaling chemicals requiring post treatment. With higher product water recovery, the reject brine will be smaller in volume, thus reducing the land requirement for disposal. The scientific approach envisioned through fundamentals of ion exchange may also be transplanted in multi-stage evaporative desalination systems to avoid scaling and consequent reduction in heat transfer efficiency of evaporators.

该 PFI：AIR 技术翻译项目的重点是翻译离子交换基础知识，以通过可逆离子交换膜 (RIX-M) 工艺填补苦咸水淡化的空白。该转化技术具有以下独特功能：由于减少了反渗透（RO）膜表面钙的硫酸盐和碳酸盐的结垢，从而提高了产水回收率，且无需添加任何防垢化学品。也可以避免硫酸钡结垢和随之而来的膜污染的威胁（无论是否存在）。该项目通过将自再生离子交换系统与反渗透工艺集成来实现这一目标。适当设计的阴离子交换树脂混合床可显着降低膜入口处的硫酸盐浓度，从而避免硫酸盐沉淀。 RO膜工艺的排出物用于再生阴离子交换树脂，无需添加外部化学品。由于消除了防垢化学品，预计潜在的经济影响将是海水淡化厂运营费用的大幅减少。该合作伙伴关系涉及一家离子交换树脂制造商和一家工程公司，通过在代表性条件下验证技术，进入全球不断增长的苦咸水淡化市场空间。从商业角度来看，该创新还可以对现有反渗透装置进行改造，从而扩大所提议技术的市场。从更广泛的角度来看，拟议的工作还将为内陆海水淡化技术奠定基础，该技术不会产生含有需要后处理的对环境有害的防垢化学物质的废物流。产水回收率越高，废盐水体积越小，从而减少处理土地的需求。通过离子交换原理设想的科学方法也可以移植到多级蒸发海水淡化系统中，以避免结垢和随之而来的蒸发器传热效率的降低。