【摘要】 <正> 1960年S.Souriraian和S.Loeb制出第一张具有实用意义的反渗透膜。自此以后,反渗透膜分离迅速地发展起来。我国从1967年就已开展反渗透研究。为了能精确地测定一些膜的基本参数以求确切地了解膜性能和传输过程,在学习兄弟单位经验基础上,我们研制了本仪器。一、原理该仪器是依据Kachlsky。A等提出的有关方程设计的,并用文献给出的经验更多还原

【Abstract】 In order to accurately evaluate the performance of ROM and Study the transportation processes of ROM, type FCH-7901 evaluation equipment has been designed according to A.KachaIskgs transportion equations and other RO formulas. The operation parameters of this equipment were selected as following: The main part of the aquipment-the evaluation cell, is installed in a thermostat with both gas and liquid phases temperature control in which the tempevature of the cell can be maintained with±0.2℃, In front of the high pressure campartment, a selfdesigned pressure regulatar is installed. The operation pressure can be controlled at any point in the range of 10～70atm, and the pulsating pressure can be decreased to less than±1atm. In the high pressune chamber, the highest flow rate of feed water can reach about 10m/sec. （Re≈14000） The evaluation cell is made of 1 Cr₁₈ Ni₉ Ti₁type stainless steel. It consists of two detachable parts.The upper part is a high pressure chamber, in which there are two "Archimedes" channels. The operation pressure may be directly measured from there. The lower part is a low pressure chamber, in which a conductivity cell to indicate the salt rejection and a glasstube to determine the water flux are embedded. The measurement accuracy of saltrejeetion and water flux are ±0.1N and ±1% respeclively. Assurance of the stability of this equipment has been given through long term running test.更多还原