What are the reasons for the failure of reverse osmosis membranes?

In the water treatment industry, membrane elements are very popular products and consumables, but there is no problem in 2-3 years under normal use. service life, but there are also many users who propose that the reverse osmosis membrane fails prematurely. In this article, the editor will introduce to you what are the reasons for the failure of the reverse osmosis membrane?

What are the reasons for the failure of reverse osmosis membranes?

1. Improper maintenance causes pollution

The water treatment equipment uses multi-stage filter elements for filtration, and each stage filter element has a specific purification effect. Therefore, the previous stages of filter elements also have a protective effect on the reverse osmosis membrane. If the front filter element is not cleaned and maintained in time, the reverse osmosis membrane will be overloaded to filter impurities in the water, causing its pollution or even damage. Therefore, when the equipment is in use, it is necessary to regularly clean and maintain the filter elements in front of the reverse osmosis membrane.

2. Damage caused by long-term discontinuation of equipment

If the equipment is out of use for more than one month, the reverse osmosis membrane will dry and crack. And the membrane has been soaked in water during the period of deactivation, which will breed bacteria and cause pollution. The quality of the influent water is a major factor affecting the service life of the reverse osmosis membrane. For equipment with poor influent water quality, the service life of the reverse osmosis membrane will be shortened to a certain extent.

3. The reverse osmosis membrane installed in the equipment is of poor quality

This phenomenon is mostly seen on off-brand equipment. Therefore, consumers are reminded not to buy non-branded products just because they are cheap. After all, you get what you pay for, and the quality of the reverse osmosis membranes used by cheap manufacturers will also be poor.

Precautions when using reverse osmosis membrane

The membrane pores of the reverse osmosis membrane are very small. If you are not careful during use, the membrane pores will be easily blocked by pollutants. Generally, the reverse osmosis membrane has a water inlet requirement. If the influent water quality meets the requirements, there will be no problems. . Therefore, a precision filter is generally added in front of the reverse osmosis membrane to filter out large particles, colloids, etc. in the water, so as to reduce the pollution of the reverse osmosis membrane.

The reverse osmosis membrane itself has strict requirements on the influent water. In order to ensure the stable operation of the reverse osmosis membrane during the use of the system, the purpose of pretreatment is to remove some large particle pollution and some colloids in the water. If pretreatment is not added, bacteria will easily enter the reverse osmosis membrane system, causing the membrane elements to be corroded, multiplying more harmful bacteria, seriously causing blockage of the reverse osmosis membrane, no water, etc., and a reasonable pretreatment design process is required in front of the MBR.