Anti-pollution reverse osmosis device and use method thereof

Abstract

The invention relates to an anti-pollution reverse osmosis device and a use method thereof. The anti-pollution reverse osmosis device is added with desalinated water circulating pumps in a connection way that a plurality of groups of pumps are in parallel based on the combination and permutation of reverse osmosis membranes, wherein part of desalinated water returns in the front of the entrance to raise the recovery rate and increase the membrane surface flow velocity. The device sequentially cleans the reverse osmosis membranes in groups by reverse osmosis membranes or cleaning fluid. When the reverse osmosis membranes are working, the reverse osmosis high-pressure pump works at a lower frequency intermittently. The water inflow pressure is also lowered, which is helpful for a pollutant layer adsorbed on the membrane surface to be desorbed from the membrane surface and taken away by the water flow. A reducing agent and antisludging agent feeding hole is arranged behind a security filter core, wherein non-oxidizing bactericides are fed through the medicine feeding hole regularly, and varieties of the non-oxidizing bactericides are changed frequently to prevent microorganisms from producing drug resistance. In comparison with the common reverse osmosis devices, the device disclosed by the invention has a higher membrane surface flow speed and an on-line automatic cleaning function. The device also employs the non-oxidizing bactericides to sterilize regularly such that the device has a better anti-pollution performance.

Description

technical field [0001] The invention relates to the fields of sewage treatment and pure water preparation, in particular to an anti-pollution reverse osmosis device and a use method. Background technique [0002] Reverse osmosis technology is the most advanced membrane separation technology today. The principle is to separate these substances from water under the action of the osmotic pressure higher than that of the solution, based on the fact that other substances cannot pass through the reverse osmosis membrane. Since the membrane pore size of the reverse osmosis membrane is very small (only about 1nm), it can effectively remove dissolved salts, colloids, microorganisms, organic matter, etc. in water (the removal rate is as high as 97-99%). The reverse osmosis membrane filtration system has the advantages of good water quality, low energy consumption, no pollution, simple process, and easy operation. The vast majority of commercial reverse osmosis membranes are standard...

AI Technical Summary

Problems solved by technology

[0016] In view of the defects existing in the prior art, the object of the present invention is to provide an anti-pollution reverse osmosis device and its use method to overcome the existing reverse osmosis membrane devices that are easy to pollute and cannot be cleaned and recycled in groups. The rate adjustment range is small, and the water quality of the system is easily affected by individual membrane defects.

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