specialized reverse osmosis scale inhibitor is used for reverse osmosis (RO) system and nanofiltration (NF) and ultrafiltration (UF) system scale inhibitor to prevent the fouling of the membrane surface, can increase water production and water production quality, reduce operating costs. Antiscalant characteristics:
Within the wide range of concentrations to control inorganic fouling
② does not unite with Fe and Al oxides and silicon compounds to form insoluble
The ③ effectively inhibit the aggregation and deposition of silicon, the concentration of the water side of SiO2 concentrations up to 290 ppm
(4) can be used in reverse osmosis CA and TFC membranes, nanofiltration and ultrafiltration membranes
⑤ excellent solubility and stability
⑥ Water Supply and PH value in the 5-10 range
2, the role of reverse osmosis scale inhibitor
Said before the Antiscalant role, first briefly reverse osmosis systems: reverse osmosis system is the raw water through a fine filter, granular activated carbon filters, compressed activated carbon filter, then through the pump pressure, the use of aperture (equivalent to 1/6000 of the size of E. coli for 1/10000μm virus 1/300) of the reverse osmosis membrane (RO membrane), so that a higher concentration of water into the low concentration of water, while the industrial pollutants , all the isolation of heavy metals, bacteria, viruses and other impurities mixed with water to achieve the physical and chemical indicators of drinking regulations and health standards, output to the clear pure water is the best choice for the body replenish the quality of water due to the RO purity of the water in reverse osmosis technology to produce human master of water technology, the cleanliness of almost 100%.
The reverse osmosis membrane is the key equipment of the reverse osmosis system, the system for a long time continuous operation, such as water, calcium and magnesium ions precipitate and attached to the surface of the reverse osmosis membrane, the formation of the plug fouling film hole, it will affect the efficiency of the reverse osmosis system water damage to the reverse osmosis membrane. The reverse osmosis membrane is more expensive, so the system is running, to increase the period of dosing system dosing in water reverse osmosis scale inhibitor, and delay the precipitation of calcium and magnesium ions and the membrane surface fouling.
The basic role of the reverse osmosis scale inhibitor:
(1) network and solubilization: soluble in water, reverse osmosis scale inhibitor ionize to generate negatively charged molecular chain, the formation of water-soluble complex or chelate with Ca2 +, so that the inorganic salt increase the solubility, play the scale inhibition.
(2) lattice distortion: part of the functional groups in reverse osmosis scale inhibitor molecules in the inorganic salt nuclei or microcrystalline occupy a certain position, obstruction and destruction of the normal growth of the inorganic salt crystals, and slow down the crystal growth rate, thereby reducing the scale of the formation of salt;
(3) the role of electrostatic repulsion: reverse osmosis scale inhibitor dissolved in water adsorption on inorganic salts microcrystalline particles repulsion between increased, hindering their coalescence, so that they are in a good dispersion state, in order to prevent or reduce the scale formation.
