Introducción a la ósmosis inversa: introducción a las características de la membrana de ósmosis inversa y la membrana de ultrafiltración

Reverse osmosis is a water treatment technology using membrane separation, which is the reverse process of osmotic phenomenon in nature (the reverse osmosis process in which water molecules pass through the membrane by overcoming the osmotic pressure with external driving force for brine).

The reverse osmosis water treatment process is basically a physical desalination method, which has many advantages that the traditional water treatment method does not have:

• Reverse osmosis is to desalinate and purify salt-containing feedwater by using a physical method without phase change at room temperature. At present, the desalination rate of ultra-thin composite membrane elements can reach more than 99.5%, and can simultaneously remove colloids, organic matter, bacteria, viruses, etc. in water.
• Water treatment is only driven by water pressure, and its energy consumption is the lowest among many treatment methods.
• There is no need for a large number of chemical agents and acid and alkali regeneration treatment, no chemical waste liquid and waste acid, alkali liquid discharge, no environmental pollution.
• The reverse osmosis device can continuously operate water production, the system is simple, the operation is convenient, and the quality of the product water is stable.
• The workload of operation and maintenance and equipment maintenance is very small.
• The equipment occupies less area and requires less space.
• It is suitable for a wide range of raw water quality, not only for the treatment of brackish water, sea water and even sewage, but also for the treatment of fresh water with low salinity.

Ultrafiltration membrane is different from ordinary hollow fiber, flat and roll membrane. In order to adapt to the direct treatment of turbid water, it has a tubular membrane structure of ultrafiltration membrane with technical technology. It has the following characteristics:

•  Membrane material is polyethersulfone material with long service life.
• Resistant to strong oxidants such as chlorine, potassium permanganate, ozone, etc., so it can be combined with chemical oxidation to remove iron and manganese. It is resistant to strong acid and alkali, and can be chemically cleaned with ordinary acid and alkali.
• La película tubular tiene alta resistencia mecánica y buena resistencia a la tracción.
• Strong adaptability to raw water quality, excellent and stable treated water quality, not affected by changes in raw water quality.
• Strong anti-biological pollution ability, not biodegradable, easy to clean and restore.

Xian CHIWATEC Water Treatment Technology es una empresa de alta tecnología especializada en varios dispositivos de procesamiento de agua. Aparte de estos productos individuales, que cubren una serie de tipos y series, también podemos ayudar con proyectos de ingeniería integrales relacionados. Gracias a nuestro arduo trabajo y dedicación desde nuestra fundación, ahora somos uno de los fabricantes de equipos de tratamiento de agua de más rápido desarrollo en el oeste de China.

Otras lecturas:

• Resumen del programa de equipos de tratamiento de agua potable directo del hotel
• Descripción del plan de diseño del sistema de equipos de agua potable directa e introducción al flujo del proceso
• ¿A qué problemas se debe prestar atención en el equipo de agua potable directo de la oficina?