Project overview

The water treatment system of thermal power plant includes three systems: boiler make-up water system, condensate treatment system, and 

integrated water system. These systems are indispensable is water resources, it will drive the normal operation of the overall system, the water 

quality of the water source still has corresponding requirements, to ensure the cleanliness of water resources, otherwise it will cause corresponding 

damage to the system. The self-cleaning filter can play a good filtration effect, reduce impurities and pollutants in the water source.

In the boiler feed water treatment reverse osmosis system, because the quality of the raw water is relatively poor, it usually contains a large number 

of impurities and solid suspended solids. Due to the presence of impurities and solid suspended solids, it is easy to cause the pressure difference of 

the system to increase, resulting in a decrease in water production, a decrease in salt rejection rate, difficulty in recoil and other phenomena. 

Therefore, in order to further improve the performance and service life of RO membranes, the reverse osmosis system needs to pre-filter the raw 

water to remove large particle size impurities and colloids in the raw water.

Technical parameters

Pipe diameter: DN300

Flow rate: 550m³/h

Working pressure: 1.6Mpa

Working temperature: 0-80°C

Filtration accuracy: 100μm

Shell material: 304 stainless steel

Backwash time: 15 seconds

Backwash pressure difference: 0.5Kg/㎡

The working principle of the self-cleaning filter

The self-cleaning filter has high filtration accuracy, large filtration area, high degree of automation, etc., and the filtration accuracy can reach 50 

microns, which can remove solid impurities that affect the life of the reverse osmosis membrane. During the filtration process, the inner layer of the 

fine filter screen gradually accumulates, and a pressure difference is formed on the inner and outer sides. When this differential pressure reaches a 

preset value, the automatic cleaning process begins. At the same time, when cleaning the filter, there will be no phenomenon that affects the 

operation of the water system.

The role of self-cleaning filters

Self-cleaning filter is the use of filter screen to directly intercept impurities in the water, remove suspended matter particles in the water body, reduce

 turbidity, purify water quality, reduce system dirt, algae, rust, etc., so as to purify water quality and protect the normal operation of other equipment 

in the system.

After the use of self-cleaning filters, the thermal power plant greatly improves the service life of the reverse osmosis membrane, thereby reducing the

operating cost of the system, ensuring the continuity and stability of the water supply system, and ensuring the normal operation of the water system

 of the thermal power plant.

Self-cleaning filter has good filtration function and filtration effect, not only can be used in power plant water system, but also used in many 

industries, can control sewage pollution, reduce damage to the water environment, but also save the use of water resources.

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