Water purifiers --Pure water equipment water rate reduction is what happened?

Pure water equipment water rate reduction is what happened?

Pure water equipment is our commonly used water treatment equipment, people familiar with it know that pure water equipment in use for a period of time, there will be a reduction in the water rate of the problem, the face of this situation we have to do it, the following chat on this topic.
In general, the phenomenon of low water yield and high pressure of pure water equipment is mainly due to instrumentation reading errors, temperature, inlet conductivity, doped water side pressure, differential pressure, membrane element flux attenuation, membrane element contamination, maintenance is not timely and other reasons.

The pressure gauge and flow meter of the pure water equipment, if they are not calibrated before use, will lead to inaccurate readings. The installation position of the pressure gauge is far away from the ends of the pressure vessel, and its reading contains the pressure loss of the pipeline, but when it is used as the inlet pressure, it will lead to low inlet pressure, which will lead to low water production.

Pure water equipment is very high purity, almost no impurities, so pure water equipment is easy to absorb contaminants from the external environment causing pollution. If we use the water storage tank is a low-grade plastic, it is easier to dissolve some of the organic matter, thereby increasing the conductivity of the water, resulting in a decline in water quality.
Most of the water purification equipment storage tank will have an exhaust port to ensure air pressure balance, this time through the exhaust port will be easy to enter the outside air at the same time with bacteria, particles of dirt, etc., these will be stored in the tank of pure water pollution. Therefore, it is recommended that the air vent is equipped with a filter.

When the inlet water temperature is lower than the initial design, reverse osmosis equipment, the inlet water temperature is reduced by 3 ℃, will lead to a reduction in water production of about 10%. When the inlet conductivity is much higher than the design value, for every 1000 ppm increase in sodium chloride solution, it will result in an osmotic pressure increase of about 11.4 psi, and the water yield of the reverse osmosis plant will be reduced at the same inlet pressure. Under the same inlet pressure, due to the production side of the water set up to hold pressure or the production of water pipeline is small, the delivery point is high and far away, thus resulting in greater resistance, leading to a reduction in net pressure, water production is reduced.
In the confined environment is also afraid of bacterial growth, because the very small microorganisms can form a bacterial film and contaminate the water. So it is also important for the sterilization of pure water.

Under normal circumstances, for the six-core 8040 membrane element, the pressure difference between the two ends is about 3~4 bar. if the pipeline design is unreasonable, it will lead to a greater loss of pressure or the second section of the concentrated water discharge valve can not be completely closed, these will lead to the reverse osmosis equipment, the net pressure is reduced, and the amount of water production is reduced.
If the wet membrane element is not preserved in place, or the wet membrane element is loaded into the system without taking protective measures, so that the membrane element becomes dry, which will lead to a substantial attenuation of the flux or no flux, resulting in reverse osmosis equipment system to reduce the amount of water production. Reverse osmosis membrane element operation requires better feed water, in the feed water into the reverse osmosis membrane element before the quartz sand, activated carbon, softeners and other front-end processing, if the water quality is too poor, it will be easy to cause the membrane element scaling or contamination or even breakage. The main reason for the low water yield and high pressure of pure water equipment is membrane scaling.

Some pure water equipment machine configuration of the tank is a flat-bottomed tank, in the maintenance time, the bottom of the tank can not be drained of water, the drainage of these water will not be clean to become a place for bacterial growth. Therefore, we recommend the use of conical tanks, so that the water can be drained in the maintenance process, not to provide a place for bacteria to grow and reproduce.
Pure water equipment in the process of use must pay attention to regular maintenance, otherwise it will make the quartz sand, activated carbon, softener front-end filter maintenance is not in place, security filter cartridge replacement is not timely, or not for replacement, it will make the filtration performance decline, these problems will lead to a reduction in the amount of water.