Automatic Non-stop Filtration Backwash Filter For Power Plants

Automatic backwash filter applied to a variety of water supply systems, process water systems and industrial cooling water system, especially for a 24-hour non-stop operation system, you can filter impurities in the water all kinds of machinery, equipment, systems to ensure safe and reliable operation 

Technical feature
1.A high filtration precision, water quality and stability.
2.Through its own retrieval and response function, automatic backwash can cope with the instability of the water quality fluctuations, without human intervention.
3.Control system is responsive, precise operation, differential pressure and time setting function can be flexibly adjusted according to different sources of water and filtering accuracy backwash pressure or time settings.
4.Cleaning efficient and thorough, the filter could completely restore the initial state, and thus life, without replacement.
5.Backwash without interrupting the normal production of water in continuous operation, stable and reliable.
6.The backwash short duration, backwash water consumption is only 0.001-0.002% of the normal water production, water-saving, energy saving, energy conservation.
7.The structural design of reasonably compact, small footprint, flexible installation of mobile.
8.Equipment vulnerable small, no supplies, low operation and maintenance costs, simple operation and management.
9 wide applications, suitable for different raw water quality and water requirements.
 




Working procedures:



The debris laden dirty fluid enters the strainer's large bottom chamber where the line velocity gets reduced. Flow continues upward passing in a  radial manner through the "sealed" screen element.
 
Unwanted materials are trapped on the inside of the filter element screen. The fluid keeps getting filtered and comes out clean through the outlet nozzle. As the filter screen gets loaded with dirt, the differential pressure keep raising.
 
There is hollow full flow backwash arm extending the full length of the filter element. This can rotate and is piped to atmosphere through a backwash valve.
 
When the differential pressure crosses the pre-set limits. The backwash valve opens the system to atmosphere causing a high velocity reverse flow across the isolated section of screen. Dirt and debris are flushed out from this segment of the screen into the backwash arm and out of the strainer via the backwash piping.
 
During the backwashing cycle the main flow is uninterrupted and continues to be strained in the normal manner. The control system would automatically close the backwash valve after the screen is cleaned.
 
These units can also be operated manually from the control panel or in continuous backwash mode.


Important parts for filtration system:
01. Carbon steel cycloner,
02. Stainless screen,
03. Butterfly valve
04. Sewage device, etc.

Application Fields

Application
Power Plants : Treatment of Industrial Water for cooling generators and filtration of sealing water to increase the service life of the Turbine Shaft sliding-ring seals in Hydro-Electric Power Stations.
 
Steel Industry: Protection of nozzles and pumps during high-pressure descaling, water treatment for blast furnaces, rolling mills, cleaning, quenching applications.
 
Chemical Industry : Improvement of product quality by filtering process media. Filtration of White water, Black Liquor, Starch, Fuel oils, Caustic Solutions, Cooking oils, brackish/salt intake water etc. For filtration of water used for cooling, process, fire protection applications.
 
Pulp & Paper Industry : Removal of fibers from white water filtrate, Protection of spray nozzles for screens of paper making machines. This reduces frequent failures caused due to clogging and wear.
 
Mining : By filtering underground, spray water of even quality is assured. This results in more reliable operation of pumps and disc cutting machines
 
Environmental Technology. Used as pre-filters before waste water treatment plants, UV Treatment, Reverse Osmosis, membrane filtration etc.
 
Sewage Treatment Plants : During Production of industrial water, filtration of a take off of the clear run can be used to save valuable drinking or well water.
 
Heat Transfer / Heat Supply : Protects heat Exchangers from clogging & wear