Water purification system and cleaning method thereof

Abstract

The invention discloses a water purification system and a cleaning method thereof, wherein the water purification system comprises a pretreatment unit (100), a reverse osmosis treatment unit (200) and a water storage unit (300) which are sequentially connected in series through pipelines, and also comprises a circulation waterway unit (400); the reverse osmosis treatment unit (200) comprises a reverse osmosis filter core (210); the circulation waterway unit (400) is connected with the reverse osmosis treatment unit (200) through a pipeline so as to form a circulation loop; a first solenoid valve (010) is arranged on the connection pipeline between the reverse osmosis treatment unit (200) and the water storage unit (300). By the water purification system and the cleaning method thereof disclosed by the invention, the flushing intensity on the reverse osmosis filter core is high, so pollutants in the reverse osmosis filter core can be effectively removed; and meanwhile, the pollution to the reverse osmosis filter core can be significantly slowed down and the service life of the reverse osmosis filter core is prolonged.

Description

technical field [0001] The invention relates to the field of tap water purification, in particular to a water purification system and a cleaning method thereof. Background technique [0002] The reverse osmosis membrane (that is, the reverse osmosis filter element) is the core component of the water purifier system. It is prone to membrane fouling due to the deposition of solutes or particles in the feed liquid on the surface of the membrane during use. Membrane fouling will directly lead to a decline in the separation performance of the reverse osmosis membrane, which will increase the operating pressure, adversely affect the quality of the produced water and the life of the reverse osmosis membrane, and increase the operating cost. [0003] Traditional reverse osmosis water purifiers usually use raw water (tap water) to flush the membrane surface to slow down the impact of membrane fouling and prolong the life of the reverse osmosis membrane. On the one hand, the amount o...

AI Technical Summary

Problems solved by technology

On the one hand, the amount of flushing water needs to be considered, usually the flushing time is very short, and the flow rate of flushing water is small, so that the shear force generated on the membrane surface during flushing is limited; on the other hand, tap water has poor dissolving ability to various salt scales , so the traditional method of flushing the membrane surface with raw water cannot effectively flush the reverse osmosis membrane

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