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Working process of quartz sand filter, manganese sand filter and activated carbon filter equipment

Filtration equipment is one of the most common and basic water treatment equipment. According to its function and filling filter material, it is divided into quartz sand filter, manganese sand filter, activated carbon filter and so on. So what is their working process? The working process of the filter equipment is basically an alternating cycle of filtration and backwashing. Filtration is a process in which suspended impurities in water are retained by the filter layer, and backwashing is a process in which suspended impurities trapped in the filter layer are removed.

(1) Filtration During filtration, the raw water flows through the filter material layer from top to bottom. After entering the filter layer, the water flows in the tortuous gap, and is intercepted or adsorbed by the filter material. In the end, only a small amount of tiny impurities remain in the water. The outlet pipe enters the follow-up equipment. (2) Backwashing The filter usually needs to be backwashed when the filter time, inlet and outlet pressure difference or outlet water turbidity reach a certain set value. The purpose of backwashing is to remove the suspended particles adsorbed and trapped on the saturated filter layer, and restore the filtration capacity of the filter material.

Relying on the scouring effect of water force and the scrubbing effect generated by the mutual friction and collision between particles, the suspended solids fall off from the surface of the filter material particles and are carried out of the filter by the backwash water flow. Because the direction of water flow is opposite to the direction of downward filtration, it is called backwashing. Backwashing usually includes water washing and combined water and air cleaning.

During water-air combined cleaning, water and air enter from the bottom of the filter layer alternately or simultaneously, and the air bubbles pass through and rise in the gaps of the filter layer, causing the pores to expand and contract, the filter material particles to rise and fall, rotate and collide, and the sludge to fall off. The combined cleaning effect of water and air is significantly better than that of water washing. (3) Positive washing After backwashing, water is fed from the top of the filter layer to wash the residual dirt inside the filter material, and the sewage is discharged from the bottom.

Until the sewage pollution drops to meet the requirements. 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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---Poolking has a professional Quality Control team to guarantee each product is 100% inspected before packing. For example when the filter inner tank comes out, they will make a first water testing before bobbin wounding. After installation all the connections or manhole & sightglass, they will make the second water testing. During the packing procedure, QC team will inspect all the details like wounding, neck, internal resin and so on to make sure no leaking and without flaw.
Poolking’s sand filter warranty is 3 years for fiberglass filter,2 years for plastic filter.During the warranty period,if the filters parts have any damage,we can judge the factors according to the photos or videos, then we can offer free parts to replace. If the filters are damaged badly,we will provide a new one.
The pumps and lights are 1 year warranty,the method is same as filters.
Poolking won well-known brand awards for consecutive 3 years
On December 6, the 2021 China Swimming Pool Hot Spring SPA Industry Annual Conference was grandly held.     While commending outstanding brands, it also established a new benchmark in industry.                                                                       Poolking won  Well-known brand awards and Product excellent quality award.
Best Best Quality production environment Factory Supplier
Poolking Best Best Quality production environment Factory Supplier
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After about 5~10days ,or when the reading of the pressure gauge on the pump side of the filter has increased by about 0.2bars since the last backwash , backwash the filter as follows:
1. Stop the pump
2.Close the valves on the suction and return lines.
3.Open the cover of the pump and empty the filter gasket .
4.Refit the cover
5.Open the valve to the drain outlet
6.Turn the lever to BACKWASH
7. Open the valves to the suction and return lines.
8.Start the pump .Rinse the filter for about 1 to 2 minutes until the water in the sight glass is clear .
NOTE : Any electric heater must be off .
9. Stop the pump
10. Turn the lever to RINSE , start the pump and rinse for about 15~30 seconds. Stop the pump and turn the lever to FILTER . This is the normal operating position .
11. Close the drain outlet valve and start the pump . Switch on the electric heater if any .
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Best swimming pool equipment manufacturer - Poolkin will continue for innovative management and excellent quality. Imagination will subvert the future, intelligent manufacturing will lead the era, that's the motto of Poolking!

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Contact: Sandy

Email: sandy@poolking.co

Sales Hot line: +86-20-34982303

WhatsApp:+86-13922334815

Add: No. 80, Danan North Road, Dagang Village, Dagang Town, Nansha District, Guangzhou City (temporary business premises)

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