The key components of the reverse osmosis membrane solution system consist of four parts, including pre-treatment, reverse osmosis host, post-treatment, and system cleaning; According to the principle of generating osmotic pressure, harmful substances can be effectively removed. Different equipment components have different corresponding operation strategies. Below, the editor will take you to understand the pre-treatment strategies of membrane separation technology.

Pretreatment strategies for membrane separation technology in reverse osmosis systems

1. For the colloid and particulate matter in wastewater, sand filters and stacked filters were used for pre-treatment. The filtering material of the sand filter is quartz sand with a particle size of 0.5-0.8mm, which can remove particles with a particle size of 100 μ Particles above m can achieve a turbidity of up to 1.

2. The laminated filter is achieved through a series of engraved large quantities of certain μ The winding of the m specification pipe trench is clamped under the effect of torsion spring and liquid pressure, forming a unique deep filtration that can effectively intercept the fine suspended particles that cannot be intercepted by the sand filter in front, with a filtration accuracy of 55 μ M.

3. Setting an activated carbon filter can effectively remove free chlorine from wastewater, maintain the reverse osmosis membrane from damage, and also adsorb organic matter, colloidal particles, etc. inside. The particle size of activated carbon is 1.25-2.5mm, and the layer thickness is 1.5-2.0m.

To avoid carbonate fouling on the membrane surface, reverse osmosis scale inhibitors can be added to water. Generally, organic phosphates are used as reverse osmosis scale inhibitors, which have better and more stable treatment effects than sodium hexametaphosphate. They are suitable for avoiding insoluble aluminum and iron compound fouling. To remove reducing substances from wastewater, an oxidant can be added to the water, usually using sodium hydroxide.

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