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China Backwash Filter Suppliers and Factory for Swimming Pool Equipment and Accessories
Equipment overview
Backwash filter is a kind of precision security filter and also a kind of micro filtration equipment. Mainly is the filter core filter device, the filtration accuracy of 0.1-500 m range, can play a good role in protecting the membrane elements. According to the need to protect the supporting equipment, there are ultrafiltration (UF) backwash pump outlet, nanofiltration (NF) device, reverse osmosis (RO) device wash pump outlet need to configure backwash filter, to prevent particles into the membrane assembly, scratch the membrane surface.
The pressure vessel of backwash filter can be made of corrosion-resistant glass reinforced plastic or stainless steel shell. The filter element is mainly composed of skeleton and filter cloth (cotton), mainly polypropylene folding type or melt-blown type filter element.
Equipment features
- The pass shape is conical structure;
- Filtration can enter deep, forming deep filtration;
- Large amount of pollution, long life;
- The structure can meet the requirement of quick replacement of filter element;
- The operating flow rate is not more than 10m3/m2.h (measured by the surface area of the filter element);
- Filter precision has a variety of specifications, can provide 0.22 m, 0.4 m, 1 m, 5 m, 10 m, 20 m, 50 m, 75 m, 100 m and other different precision of the filter element.
Conditions of use
1. Security Filter Design Pressure
Less than 0.4Mpa
2. Water Pressure Test Pressure
0.8Mpa
3. Design Temperature
0℃ - 50℃
4. Service Life
About 4-8 months (under normal working conditions)
Scope of application
It is suitable for further purification of water with low suspended impurities (turbidity less than 2-5 degrees).
Frequently Asked Questions
What is the primary function of a backwash filter?
A backwash filter is a precision security filter and micro-filtration device with a filtration accuracy range of 0.1-500 m. It plays a critical role in protecting membrane elements from particle ingress and surface scratching.
Where should the backwash filter be configured in a water system?
It is typically configured at the ultrafiltration (UF) backwash pump outlet, nanofiltration (NF) device, and reverse osmosis (RO) device wash pump outlet to prevent particles from entering the membrane assembly and scratching the membrane surface.
What materials are used for the backwash filter vessel and elements?
The pressure vessel can be made of corrosion-resistant glass reinforced plastic or stainless steel. The filter element is composed of a skeleton and filter cloth (cotton), mainly utilizing polypropylene folding type or melt-blown type filter elements.
What are the design pressure and temperature limits for this filter?
The security filter design pressure is less than 0.4Mpa, the water pressure test pressure is 0.8Mpa, and the design temperature ranges from 0℃ to 50℃.
How long does the filter element typically last?
Under normal working conditions, the filter element can maintain a service life of approximately 4 to 8 months before needing replacement.
What type of water quality is suitable for the backwash filter?
It is suitable for the further purification of water with low suspended impurities, specifically where the turbidity is less than 2-5 degrees.