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China Backwash Filter Suppliers - Precision Micro Filtration Equipment from Trusted Factory
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. Design pressure:
Less than 0.4Mpa
Less than 0.4Mpa
2. Water pressure test:
0.8Mpa
0.8Mpa
3. Design temperature:
0℃-50℃
0℃-50℃
4. Service life:
Under normal working conditions, the filter element can maintain the service life of about 4-8 months
Under normal working conditions, the filter element can maintain the service life of about 4-8 months
Scope of application
It is suitable for further purification of water with low suspended impurities (turbidity less than 2-5 degrees).
Frequently Asked Questions (FAQ)
What is the primary function of a backwash filter?
A backwash filter is a precision security and micro-filtration equipment designed to protect downstream membrane elements (such as UF, NF, and RO systems) by preventing particles from entering and scratching the membrane surfaces.
What materials are used to construct the backwash filter?
The pressure vessel is typically made of corrosion-resistant glass reinforced plastic (FRP) or stainless steel. The filter element consists of a skeleton and filter cloth (cotton), mainly utilizing polypropylene folding or melt-blown type elements.
What filtration precisions are available for the filter elements?
The filter offers various specifications ranging from 0.1 to 500 μm. Common precision options include 0.22 μm, 0.4 μm, 1 μm, 5 μm, 10 μm, 20 μm, 50 μm, 75 μm, and 100 μm.
What are the recommended operating pressure and temperature limits?
The security filter is designed for operating pressures less than 0.4Mpa (with a water pressure test limit of 0.8Mpa) and a design temperature range of 0℃ to 50℃.
How long is the typical service life of the filter element?
Under normal operating conditions, the filter element can maintain an effective service life of approximately 4 to 8 months before requiring replacement.
When should this backwash filter be applied?
It is ideal for the further purification of water containing low levels of suspended impurities, specifically where the water turbidity is less than 2-5 degrees.