Pulse Flow RO - The new RO technology for waste and brackish water applications
Pulse Flow RO - The new RO technology for waste and brackish water applications
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脉冲流反渗透 - 适用于废水和苦咸水应用的新型反渗透技术
DOI：
10.1016/j.desal.2020.114336
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发表时间：
2020
期刊：
影响因子：
9.9
通讯作者：
G. Greenberg
中科院分区：
文献类型：
--
作者：
B. Liberman;L. Eshed;G. Greenberg
脉冲流反渗透（PFRO）技术是一种新型的、创新的反渗透水回用系统操作方法，可实现高回收率、高通量和无氯胺操作。PFRO™不断改变渗透和水力条件，从而大大减少生物污垢和结垢。2018年10月至2019年10月，PFRO技术在加利福尼亚州皮斯莫海滩的市政废水（WW）处理设施中进行了演示，使用市政废水处理厂的二级出水作为源水。该装置以16.5 gfd（28 LMH）的平均通量运行，比11 gfd（18-19 LMH）的标准设计高50%。比通量为0.12 GFD/PSI -比大多数运行良好的废水再利用设施高出约25%，这些设施在相同的回收率下运行，比通量为0.09-0.1 gfd/psi。该装置在单个RO阶段中以86%的回收率运行。没有投加氯胺，因此没有形成消毒副产物。无氯胺操作产生的渗透物具有约100%的紫外线透明度（UVT）值，从而在最终紫外线/高级氧化工艺（UV/AOP）阶段中节省30-40%的资本（CAPEX）和运营支出（OPEX）。该工艺的总水成本比类似标准的完全高级处理（FAT）水再利用工艺低14-28%。
Pulse Flow Reverse Osmosis (PFRO) technology is a new, innovative method for operating Reverse Osmosis water reuse systems that enables high recovery, high flux and Chloramine-free operation. PFRO™ constantly changes the osmotic and hydraulic conditions, thus greatly diminishing biofouling and scaling. PFRO technology was demonstrated in a municipal wastewater (WW) treatment facility at Pismo Beach, CA, from October 2018 until October 2019, using secondary effluent of a municipal wastewater plant as source water. The unit operated with an average flux of 16.5 gfd (28 LMH), which is 50% higher than the standard design of 11 gfd (18–19 LMH). Specific flux was 0.12 GFD/PSI - about 25% higher than most well-operated wastewater reuse facilities that operate at the same recovery with specific flux of 0.09–0.1 gfd/psi. The unit operated at 86% recovery in a single RO stage. No chloramine was dosed, thus no disinfection byproducts were formed. The chloramine-free operation generates permeate with an Ultraviolet Transparency (UVT) value of about 100%, thereby saving 30–40% on Capital (CAPEX) and Operational Expenditure (OPEX) in the final Ultra Violet/Advanced Oxidation Process (UV/AOP) stage. The overall water cost in this process is 14–28% lower than a similar standard Fully Advanced Treatment (FAT) water reuse process.