Phosphorus-free reverse osmosis membrane antisludging agent and preparation method thereof

Abstract

The invention relates to a phosphorus-free reverse osmosis membrane antisludging agent and a preparation method thereof, relating to water treatment. The phosphorus-free reverse osmosis membrane antisludging agent comprises the following components by weight percent: 50-90 percent of AL-one, 5-20 percent of sulphonate copolymer, 0.5-1.5 percent of pH regulator and the balance of de-ionized water. The preparation method comprises the steps of sequentially adding the de-ionized water, the pH regulator, the AL-one and the sulphonate copolymer into a container according to the weight percent, stirring for 1-1.5 h under room temperature and obtaining the product. The phosphorus-free reverse osmosis membrane antisludging agent can be used in a wider pH range of water supply, has favorable stability for calcium ion concentration, alkalinity and metal ions of iron, manganese, and the like, can effectively control dirties such as CaCO3, CaSO4, BaSO4, SrSO4, CaF2, SiO2, and the like, has no causticity compared with acid and safe operation, can be compatible with general flocculating agent, is not easy to decompose, can be stored for a long time and can eliminate biological pollution and bacteria exceeding standard of the membrane system and avoids pollution of calcium phosphate precipitation and pollution for environmental water source. The invention is suitable for the water treatment of a reverse osmosis system.

Description

technical field

[0001] The invention relates to water treatment, in particular to a phosphorus-free reverse osmosis membrane scale inhibitor and a preparation method thereof. Background technique

[0002] Reverse osmosis (RO) desalination technology is widely used in various fields such as pure water preparation, power plant boiler feed water treatment, industrial wastewater treatment and drinking water treatment. Compared with the traditional desalination technology, reverse osmosis desalination technology has outstanding advantages such as simple system, convenient operation, small system footprint, low energy consumption, stable product water quality, no regeneration waste liquid discharge, and economical operating costs. Therefore, the application of reverse osmosis The field has been continuously expanded. In addition, with the development of membrane separation technology, the improvement of pretreatment technology, the development of energy recovery system and the wi...