Hollow fiber membrane separator and its running process

Abstract

The hollow fiber membrane separator includes membeane assembly, control valve, pressure gauge, pump, air compressor, water tank, connecting pipes and other parts; and features that the upper mouth ofthe membrane assembly is connected via a back washing flow meter as well as a back washing regulating valve in one channel and a back washing automatic valve to the back washing pump pipe and the back washing pump via its inlet valve is connected to back washing water tank pipe in one channel and discharge valve pipe in the other channel; that the back water tank is connected to the filtering liquid outlet valve pipe via change-over valve and filtering liquid flow meter with the change-over valve being connected to circular water tank. The running process includes two steps in different cleaning states. The present invention makes it possible to realize ideal membrane separation and membrane cleaning.

Description

1. Technical field

[0001] The invention relates to membrane separation technology, specifically an external pressure hollow fiber membrane separation device and its operating method. The international patent main classification number is intended to be Int.C1 7 .BO1D 63 / 02, BO1D 65 / 02. 2. Background technology

[0002] Water is the source of life. With the improvement of living standards, on the one hand, people's requirements for drinking water are constantly increasing, so-called pure water, space water or purified water has entered people's daily life. On the other hand, production and industrial water, such as biochemical, pharmaceutical, food, seasoning and other fields, have higher and higher requirements for water purity. In recent years, people have developed microfiltration and ultrafiltration membrane technology for water purification, which is meeting this need and has achieved good practical results. Among them, external pressure hollow fiber membranes are mos...

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