The reverse osmosis membrane element is actually the core filtration component of the reverse osmosis equipment, which is equivalent to the “heart” of the equipment. Its core role is to deeply filter raw water and trap impurities to produce pure water.Its core is a selective permeable RO membrane, which can allow water molecules to pass through, while efficiently trapping salt, heavy metal ions, chemical, medium, colloidal and other impurities in the water, which is the key to achieving reverse osmosis water purification.In fact, it does not have a fixed replacement time standard, unlike home appliance consumables, which have a clear time limit.
In most cases, the membrane element is used normally, and the replacement cycle is 2-3 years.But this is not absolute. Some customers have not changed it for 4-5 years, and some have to change it for more than 1 year.The core is two points: the quality of raw water, and daily maintenance.
Source manufacturer of DIEN reverse osmosis equipment
Key factors affecting the replacement of membrane elements：
The quality of raw water is poor.For example, if the sand content is high, the hardness is high, or the salt content exceeds the standard, the filtration burden on the membrane element is heavy.Impurities are easy to get stuck in the membrane pores, slowly reducing the filtration effect, and the replacement cycle will naturally be shortened.On the contrary, the raw water quality is good, the filtration pressure is low, and the service life of the membrane is much longer.
Operating conditions.Long-term high-load operation of equipment, such as non-stop operation for 24 hours, the loss of membrane will be greater than intermittent operation.There are also improper operations, such as failure to rinse before starting up and failure to protect after shutdown, which will accelerate the aging of the film.In fact, you don't need to memorize the time by rote, you can know when to change it by looking at the status of the device.The water quality of the effluent has decreased significantly, the conductivity has continued to increase, and the water production has also been significantly reduced. After cleaning, it has not improved. Basically, the membrane element is no longer working, and it is time to change it.There are also membrane elements that are damaged or leaking, and they must be replaced in time, otherwise it will affect the quality of the water output of the entire equipment.
How to do the daily maintenance of membrane components?
The pretreatment should be done well.The front quartz sand and activated carbon filters must be cleaned and replaced regularly.Don't let large particles of impurities and organic matter directly enter the reverse osmosis membrane, otherwise it will be easy to block the membrane. This is the most basic and critical step.
Rinse regularly.Before the equipment is turned on and after the shutdown, the membrane elements must be rinsed to flush out the impurities attached to the membrane surface to avoid accumulation.There is also regular chemical cleaning, generally once every 3-6 months, adjusted according to the water quality. When cleaning, pay attention to the concentration of the agent and do not corrode the membrane components.
Do a good job of shutdown protection.For short-term downtime, keep the membrane elements moist and avoid drying; for long-term downtime, do a good job of pharmaceutical protection to prevent the membrane from breeding bacteria and aging.In addition, the pressure and water temperature should be controlled during operation, and the rated range of the membrane element should not be exceeded, otherwise the membrane will be damaged.There is no fixed replacement time for reverse osmosis membrane components. 2-3 years is the conventional range. The key depends on water quality and maintenance.Spending more time on daily maintenance can not only ensure the stability of the water outlet, but also save the cost of replacing the membrane.As a manufacturer, we will regularly remind customers to do maintenance, and we can also provide on-site inspection and replacement services to help everyone save worry and money.
Source manufacturer of DIEN reverse osmosis equipment
How much does it cost to replace the membrane element?
There is no fixed price for reverse osmosis membrane components, and the differences are mainly in specifications, brands and quality.The price of a 4-inch film for conventional industrial use is about 900-3700 yuan per piece, and the price of an 8-inch film ranges from 1200-8500 yuan per piece.Domestic films are more cost-effective. For domestic brands like Hangzhou Haina, industrial-grade films can be bought for 900-3800 yuan, and the core model is 1200-1800 yuan. The performance is comparable to imported models, but the price is only about half that of imported high-end films.Imported membranes such as Dow and Heideneng have high prices. Conventional models are 3.300-5.000 yuan each, and high-end desalination and electronic-grade models can reach more than 8.000 yuan.
Here is a reminder that there are low-cost films below 3.000 yuan on the market. Most of them are refurbished films and labeling films. They seem to be cheap. After one or two months on the machine, the water quality will decline and the pressure difference will soar. On the contrary, it is more expensive.Our DIEN water treatment source manufacturers directly supply original membranes, whether domestic or imported, they can provide traceability certificates, bulk purchases can also give ladder discounts, and on-demand selection is more cost-effective.
