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Filter sand cylinder backwash cycle problem


In fact, some customers have been asking how often the sand filter tank should be backwashed. Boying Company has to explain patiently every time. Because of this so-called backwash cycle, there is no fixed formula at all.

Just like eating, you can eat as long as you are hungry. Moreover, sand filter cylinders are very versatile. It is used in different industries, the amount of impurities and other factors are different, and the cycle of backwashing is also different.

The following analyzes several factors that affect the backwash cycle: 1. The application places are different. For example, some customers use filter sand tanks to filter impurities in mountain spring water. In this case, mountain spring water is generally relatively clear, so it is possible to backwash once every ten and a half months. However, some customers are used to filter impurities in urban sewage, which may require backwashing once a day.

2. The selection of sand tanks is different. We can see that the sand filter cylinders sold by Poying have a design flow parameter. But this parameter can only be regarded as a little reference in the application.

Because the flow rate of the filter sand tank will vary with the pump flow rate, sand layer thickness, sand material size, filter area and other factors. In the case of the same suspended matter content and the same flow rate, theoretically speaking, the larger the sand tank, the larger the filter area, and the smaller the resistance to the water flow. The higher the filtering accuracy is.

The backwash cycle is also shorter. 3. Customers have different subjective judgments. Because some customers have subjective differences in the judgment of the sewage after backwashing.

So the backwash cycle also varies at his discretion. Solution: A cycle can be determined according to the turbidity of the previous backwashing sewage and the readings of the pressure gauge. For example, during normal filtration, the count of the pressure gauge is 0.1MPa. When the reading of the pressure gauge reaches 0.2MPa, we backwash once and find that the discharged sewage is not so dirty.

Then we know that the time for the next backwash can be extended. Repeat several times, each time we record this time interval. An optimal backwash cycle will be obtained.

In this way, a good balance can be achieved between neither affecting the sewage discharge nor paying more labor. Poolking is the best swimming pool equipment manufacturer and supplier in China. Poolking exists to provide the highest quality swimming pool equipment while offering competitive pricing..

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