Turbulence promoters for hyperfiltration with dynamic membranes.
Turbulence promoters for hyperfiltration with dynamic membranes.
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用于动态膜超滤的湍流促进器。
DOI：
10.1021/es60047a006
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发表时间：
1970
影响因子：
11.4
通讯作者：
R. Keller
中科院分区：
文献类型：
--
作者：
David G. Thomas;P. H. Hayes;W. R. Mixon;J. Sheppard;W. Griffith;R. Keller
超滤湍流促进剂的实验研究表明，分离式促进剂具有“理想”促进剂的特性，即既不堵塞膜表面，也不形成固体聚集区或截留盐浓度聚集区。此外，对于动态形成的膜，湍流促进剂引起传输速率的显著增加，并降低传输速率随时间的损失。用优化程序对湍流促进器在超滤过程中的应用条件进行了经济评价。结果表明，湍流促进器的使用显着影响最佳植物的几何形状;凭借较高的通量时，使用湍流促进器（已知的实验可能与动态膜），显着降低水成本时，动态膜不应变，以满足产品的水质要求可能。
Experimental studies of turbulence promoters for hyper-filtration show that detached promoters can be fabricated which possess characteristics of “ideal” promoters—ie, they do not block the membrane surface nor provide stagnant regions where solids can accumulate or where the concen-tration of rejected salts can build up. Also, with dynamically formed membranes, turbulence promoters cause marked increases in transmission rate and reduce transmission rate losses with time. Economic evaluation of conditions for which application of turbulence promoters to the hyperfiltration process might be attractive was carried out by using an optimi-zation computer code. Results show that use of turbulence promoters markedly affects optimum plant geometry; by virtue of higher fluxes when using turbulence promoters (known to be experimentally possible with dynamic mem-branes), appreciable reduction in water cost may be possible when the dynamic membrane is not strained to meet product water quality requirements.