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How to properly check the safe use of reverse osmosis membranes in small and medium-sized fully automatic pure water equipment
- 2019-11-04-

Nowadays, the reverse osmosis membrane technology of small and medium-sized fully automatic pure water equipment is widely used in water treatment projects due to its stable and efficient process performance. The main filter element reverse osmosis membrane in small and medium-sized fully automatic pure water equipment is easily affected by raw water. Pollution caused by various pollutants. The pollution caused by the membrane is different due to the different water quality of different local water sources. The speed of pollution is also very different. So how to determine that the reverse osmosis membrane of small and medium-sized fully automatic pure water equipment has been polluted? ?here we come to find out.

Small and medium automatic water purification equipment

Regardless of whether it is groundwater or surface water, it always contains iron-aluminum colloid, silica gel, organic colloid, colloid formed by coagulant added during pretreatment, coagulant and scale inhibitor, etc., all of which may be deposited on the membrane surface, making the system pressure The difference increases, the water production decreases, and the desalination rate decreases.

Small and medium-sized full-automatic pure water equipment reverse osmosis membrane biological pollution mainly occurs in surface water treatment systems and operating systems that frequently start and stop. A single fungicide cannot kill all kinds of microorganisms in the water. The microorganisms grow and reproduce and adhere to the surface of the membrane to form a microbial mucosa, which makes the system operating pressure difference increase, the water production rate decreases, and the desalination rate increases slightly and then decreases.

Small and medium automatic water purification equipment

Fouling often occurs in the second stage, which is precipitated and precipitated by excessive dissolved salts in concentrated water, which manifests as an increase in the pressure drop in the original stage, a decrease in desalination rate, and a decrease in output. As long as the recovery rate and the amount of scale inhibitor are adjusted, it can be controlled.

Membrane performance has a great impact on the water production effect of water treatment equipment. Pollution will cause the membrane performance to decrease. Therefore, when pollution occurs, it is necessary to find out the pollution situation and take effective cleaning measures to perform timely cleaning to restore the membrane performance.

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