Reverse osmosis safety filter with cleaning function and cleaning method thereof

Abstract

The invention relates to a reverse osmosis safety filter with a cleaning function and a cleaning method thereof, belonging to the technical field of reverse osmosis water treatment systems. The reverse osmosis safety filter with the cleaning function comprises a filter body, wherein a filter element is arranged in the filter body; the filter body is provided with a water outlet valve, a water inlet valve, a cleaning liquid inlet valve, a compressed air inlet valve, an air exhaust valve and a cleaning liquid return valve, wherein the cleaning liquid inlet valve controls entrance of the cleaning liquid; the compressed air inlet valve controls entrance of the compressed air; the air exhaust valve exhausts the compressed air; the cleaning liquid return valve discharges the cleaning liquid; the cleaning liquid inlet valve and the cleaning liquid return valve are arranged at opposite sides of the filter body respectively; one of the cleaning liquid inlet valve and the cleaning liquid return valve is arranged at a water inlet end of the filter element, and the other one is arranged at a water producing end of the filter element; and the compressed air inlet valve and the air exhaust valve are arranged at a water producing end and a water inlet end of the filter body respectively.

Description

technical field [0001] The invention relates to a reverse osmosis security filter with a cleaning function and a cleaning method thereof, belonging to the technical field of reverse osmosis water treatment systems. Background technique [0002] The reverse osmosis system is an important equipment for desalination of water quality worldwide, and is widely used in the field of water treatment technology. Before the raw water enters the reverse osmosis device, it is an essential process to pass through the security filter. However, with the increasing complexity of raw water quality and the increase of large-scale reverse osmosis systems, the cost of replacing filter elements of security filters has emerged. Especially at present, a large number of large flux filter elements are used, and the cost of a single filter is high, and the annual replacement cost is particularly considerable. [0003] Most security filter elements use melt-blown or folded filter elements. The filtra...

AI Technical Summary

Problems solved by technology

[0004] The pollutants on the surface of the filter element are based on particulate matter and organic matter; since there is no component that inhibits microorganisms in the operating environment of the security filter, a large number of microorganisms will quickly grow on the organic matter that is enriched on the surface of the filter element, and the growth of microorganisms, Adhesive substances produced by death will form a dense layer with very poor water permeability, which is the main reason for the decrease in the water flow of the filter element

And the prior art can only solve this problem by changing the filter element

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