A kind of alkaline low phosphorus reverse osmosis membrane scale inhibitor and preparation method

Abstract

The invention provides an alkaline low-phosphorous reverse osmosis membrane anti-scaling agent and a preparation method. The alkaline low-phosphorous reverse osmosis membrane anti-scaling agent comprises the following components in percentage by mass: 15-50% of EDTMPS, 10-40% of PAA with the molecular weight of 1800-2200, 5-20% of dimethyl fumarate, 2-8% of 0.5-2mg / ml graphene oxide aqueous dispersion, and 20-50% of a pH value adjusting agent. The alkaline low-phosphorous reverse osmosis membrane anti-scaling agent is simple in production process, free of waste emission, controllable in cost, appropriate in price, applicable to scale dispersion of various reverse osmosis membranes, capable of effectively achieving synergistic effects of physical adsorption and chemical adsorption on pollutants, and meanwhile is excellent in corrosion inhibition, sterilization and mold prevention.

Description

technical field [0001] The invention belongs to the technical field of water treatment and relates to a scale inhibitor, in particular to an alkaline low phosphorus reverse osmosis membrane scale inhibitor and a preparation method. Background technique [0002] At present, reverse osmosis technology has been increasingly widely used in desalination, ultrapure water preparation, sewage treatment and various separation and purification processes in chemical, pharmaceutical, food and other industries. Reverse osmosis technology is a reverse osmosis process in which an external driving force is applied to salt water to overcome osmotic pressure and allow water molecules to pass through the membrane. After reverse osmosis treatment, 99% of the salt and silicon dioxide in the water can be removed, and 99.5% of the calcium and magnesium in the water can be removed. However, the concentrated water of the reverse osmosis unit is easily polluted by particles, colloids and insoluble s...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the phosphorus-containing reverse osmosis membrane antiscalants on the market will inevitably cause hidden dangers of membrane system bio-fouling and bacteria exceeding the standard, and the use of phosphorus-containing antiscalants will cause pollution to environmental water sources

Although there are some completely phosphorus-free products, they all have disadvantages such as high production cost and low scale inhibition efficiency.

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