In today's rapidly developing industrial and urbanization process, wastewater treatment has become an important environmental issue. As an advanced and efficient water treatment technology, reverse osmosis membrane has been widely used in the field of sewage treatment. However, in the face of a wide variety of reverse osmosis membrane products on the market, how should we choose the right membrane material for our needs?The following article will detail the procurement guide for reverse osmosis membranes for wastewater treatment to help you choose the right product easily.
1.Type of membrane.
There are many types of membranes for reverse osmosis membranes, including polyether ester membranes, polyether membranes, polypropylene membranes, etc. Membranes of different materials differ in desalination efficiency, contamination resistance, and chemical resistance. When selecting membrane materials, it should be considered according to the actual use environment, water load and maintenance cost.
2.Water permeability.
Water permeability is one of the important indicators of reverse osmosis membranes, which is usually evaluated by salt rejection and water flux. The higher the salt retention rate, the better the desalination effect of the membrane and the purer the water quality. The higher the water flux, the greater the membrane capacity and the longer the backwash cycle. During the purchase process, the appropriate salt retention rate and water flux should be selected according to the actual needs.
3.Application scenario: reverse osmosis membrane treatment for sewage treatment.
According to the different scenarios of sewage treatment and industrial sewage treatment and water quality, such as high-salt wastewater, reverse osmosis membrane with high desalination rate and high-pressure reverse osmosis membrane, while the treatment of general seawater, seawater desalination and other application scenarios, and boiler water reuse and other reverse osmosis membrane application scenarios, seawater desalination membrane or low-pressure reverse osmosis membrane can be selected, such as Meifute SW seawater desalination reverse osmosis membrane, and Meifute BW series brackish water treatment reverse osmosis membrane, etc., the operating pressure is relatively low, and the energy consumption is relatively low.
4.Anti-contamination properties.
Contamination is one of the important factors affecting the service life and performance of reverse osmosis membranes. Choosing a film with good anti-fouling properties can reduce the frequency of cleaning and maintenance costs of the film. In the procurement process, the anti-fouling index of the film material should be referred to, and the cleaning method and cycle of the film should be paid attention to to ensure the stable operation of the film. For example, compared with the traditional seawater desalination reverse osmosis membrane, the membrane has been modified and the anti-pollution performance is better, so it is suitable for use in this kind of treatment scenario.
5.Choose domestic reverse osmosis membrane or imported reverse osmosis membrane?What are the brands of domestic reverse osmosis membranes?
*The reputation and after-sales service of the merchant are very important to the quality of the product and the experience of use. Choosing a reputable and professional after-sales service provider can ensure the quality and timely technical support of membrane materials, and obtain a better purchase experience in the use of membrane materials. Imported reverse osmosis membranes, such as Hyde can reverse osmosis membrane, Toray reverse osmosis membrane, etc., the advantage is that it is more mature, the disadvantage is that compared with domestic products, the delivery cycle may be longer, and the other is that the cost performance is not as good as the domestic reverse osmosis membrane brand, there are similar to the United States and other reverse osmosis membrane manufacturers, with reverse osmosis membrane related patents and production lines, the supply will be more reliable.
In short, when choosing a reverse osmosis membrane for sewage treatment, factors such as membrane material type, water permeability, membrane element size, pollution resistance, reputation and after-sales service should be comprehensively considered. By fully understanding our needs and referring to professional advice, we can choose high-performance, high-efficiency reverse osmosis membranes to support our wastewater treatment.