Bactericide used for reverse osmosis membrane and preparation method thereof

Abstract

The invention discloses a bactericide used for a reverse osmosis membrane and a preparation method thereof. The bactericide is prepared by compounding the following components in percentage by weight: 20-30 percent of cyanogen bromide propanamide, 5-10 percent of bronopol, 40-60 percent of solvent, 1-10 percent of auxiliary agent and the balance of deionized water. The preparation method comprises the following steps of: adding the solvent into a reaction kettle at room temperature; adding the cyanogen bromide propanamide and the bronopol and stirring for 50-60 minutes; adding the auxiliary agent and the deionized water and stirring for 20-30 minutes; and standing still for 10 minutes. The bactericide used for the reverse osmosis membrane can be used for quickly penetrating through a microbial cell membrane and acting on certain protein groups to ensure that the normal oxidation and reduction of cells are stopped so as to cause cell death, and the bactericide used for the reverse osmosis membrane has the advantages of quick and efficient performance and convenience in use.

Description

technical field [0001] The invention belongs to the technical field of reverse osmosis membrane system water treatment, and in particular relates to a high-efficiency bactericide used for reverse osmosis membrane sterilization treatment and a preparation method thereof. Background technique [0002] The reverse osmosis membrane treatment system generally uses a bactericide (sodium hypochlorite) to sterilize the influent water in the pretreatment stage, and uses a reducing agent (sodium bisulfite) to reduce the residual chlorine in the water in the security filter treatment stage, because the material of the reverse osmosis membrane It is very sensitive to residual chlorine, which will damage the performance of the reverse osmosis membrane material (polyarylamide membrane, polysulfone membrane), causing irreversible damage to the reverse osmosis membrane, thus losing the ability to remove ions in water. [0003] Since the reducing agent (sodium bisulfite) reduces all the resi...

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Problems solved by technology

[0002] The reverse osmosis membrane treatment system generally uses a bactericide (sodium hypochlorite) to sterilize the influent water in the pretreatment stage, and uses a reducing agent (sodium bisulfite) to reduce the residual chlorine in the water in the security filter treatment stage, because the material of the reverse osmosis membrane Very sensitive to residual chlorine, residual chlorine will damage the performance of reverse osmosis membrane materials (polyarylamide membrane, polysulfone membrane), causing irreversible damage to the reverse osmosis membrane, thus losing the ability to remove ions in water

[0003] Since the reducing agent (sodium bisulfite) reduces all the residual chlorine in the water, there is no bactericide in the reverse osmosis membrane group, causing the reproduction of microorganisms and bacteria, resulting in microbial failure, and making the water produced by the reverse osmosis membrane Changes in rate, pressure difference and desalination rate affect the normal operation of production

[0004] At present, for the microbial failure of the reverse osmosis membrane, the method of shutting down the chemical cleaning is generally adopted to eliminate the failure, but this method will cause damage to the material of the reverse osmosis membrane itself, and the other is that the device needs to be shut down, which makes the produced water load Reduced production efficiency and extremely inconvenient operation

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