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The purified water equipment mainly adopts the reverse osmosis membrane separation technology.
The design of the process circuit must consider the conditions of the influent water and reasonably arrange the pretreatment filter device to promote the maintenance of the reverse osmosis system
.
Otherwise, there will be situations such as unqualified purified water quality
.
Since the water source of the enterprise may come from municipal tap water, it may also come from sea water, well water, reservoirs, etc.
, and the composition and index content of the water will be different due to different environments
.
Even if it is tap water, the water quality of the north and south will be different
.
If the water quality of the system inlet water is not good, it is very easy to cause the RO membrane to be scratched, and the situation of fouling or oxidation will occur, thus affecting the quality of the effluent
.
Therefore, the design of the purified water system needs to take the raw water quality report as the design reference
.
Figure 1 The raw water quality testing of Jingderui purified water equipment mainly includes water quality type, water quality conductivity, temperature, pH value and water composition analysis
.
Among them, the composition analysis of water includes dissolved oxygen, permanganate index, chemical oxygen demand, biochemical oxygen demand, trace elements and many other indicators
.
Among them, although the pH value of the influent has little effect on the produced water, it has a great influence on the desalination rate.
The CO₂ dissolved in the water exists in the form of gaseous CO₂ when the pH value is low, and it is easy to pass through the reverse osmosis membrane of the purified water equipment, so the pH When the pH is low, the desalination rate is also lower.
With the increase of pH, gaseous CO₂ is converted into HCO₃- ions, and the desalination rate also increases gradually.
At pH 7.
5-8.
5, the desalination rate will reach the highest
.
In the design of purified water system, it is necessary to analyze the detection results of these indicators, so as to reasonably select the water treatment process
.
For example, whether pretreatment needs to add activated carbon filter, softener,
etc.
Therefore, the raw water quality must be considered in the design of the purified water system
.
The design of the process circuit must consider the conditions of the influent water and reasonably arrange the pretreatment filter device to promote the maintenance of the reverse osmosis system
.
Otherwise, there will be situations such as unqualified purified water quality
.
Since the water source of the enterprise may come from municipal tap water, it may also come from sea water, well water, reservoirs, etc.
, and the composition and index content of the water will be different due to different environments
.
Even if it is tap water, the water quality of the north and south will be different
.
If the water quality of the system inlet water is not good, it is very easy to cause the RO membrane to be scratched, and the situation of fouling or oxidation will occur, thus affecting the quality of the effluent
.
Therefore, the design of the purified water system needs to take the raw water quality report as the design reference
.
Figure 1 The raw water quality testing of Jingderui purified water equipment mainly includes water quality type, water quality conductivity, temperature, pH value and water composition analysis
.
Among them, the composition analysis of water includes dissolved oxygen, permanganate index, chemical oxygen demand, biochemical oxygen demand, trace elements and many other indicators
.
Among them, although the pH value of the influent has little effect on the produced water, it has a great influence on the desalination rate.
The CO₂ dissolved in the water exists in the form of gaseous CO₂ when the pH value is low, and it is easy to pass through the reverse osmosis membrane of the purified water equipment, so the pH When the pH is low, the desalination rate is also lower.
With the increase of pH, gaseous CO₂ is converted into HCO₃- ions, and the desalination rate also increases gradually.
At pH 7.
5-8.
5, the desalination rate will reach the highest
.
In the design of purified water system, it is necessary to analyze the detection results of these indicators, so as to reasonably select the water treatment process
.
For example, whether pretreatment needs to add activated carbon filter, softener,
etc.
Therefore, the raw water quality must be considered in the design of the purified water system
.
