|The FILTREX Candles are the Columns which are formed by stacking the
FILTREX Wafers on Top of Each Other.
The filter candles are the columns which are formed by stacking the Filtrex wafers. The resulting "candle" assembly consists of the stacked Filtrex wafers, the hexagon support core, upper support plate, lower compression plate, the seal plate, and the compression spring.
The Filtrex wafer stacks are precisely arc-aligned by virtue of the hexagonal orientation between the wafer's center cavity and the hexagonal support core. Compression of the elements is achieved via a compression spring and the lower compression plate. the spring serves a dual function:
To compress the wafers to full surface contact.
Separation during backwash is achieved by hydraulic and mechanically applied forces. As the fluid flow reverses direction during cleaning, the resultant hydraulic force impacts the compression plate and causes greater spring compression, thus momentarily releasing the compression of the wafer stacks and causing their separation.
This action breaks up the created filter cake and dislodges any containment that will otherwise be extremely difficult to remove.
THE FILTREX ADVANTAGE
By Combining Sophistication with Simplicity of Design, the FILTREX Systems Offer Answers to Many of the Filtration Problems of Today.
REDUCED OPERATIONAL COSTS- Savings are quite large in applications where high solid loadings & hazardous waste production is an issue.
REDUCED HAZARDOUS WASTE HANDLING & PRODUCTION - Throwaway media such as cartridges, paper and others, normally make up most of the hazardous waste volume; in some cases it exceeds 70% of total volume. In the Filtrex System the only hazardous waste is the contaminant itself.
MINIMUM OPERATOR INTERFACE - This reduces cost and exposure to hazardous material.
PERMANENT FILTER MEDIA - The system elements are normally manufactured from materials which are compatible with various chemicals and service conditions, precluding abnormal applications, the service life of the elements could be indefinite.
BACKWASH FLUID REQUIREMENTS ARE MINIMAL - If compared with the backwashing of a sand filter. The Filtrex System requires a small fraction of clean fluid for backwashing. Example, for a service flow of 1,000 g.p.m., the sand filter will need 45,000 gallons of clean water to backwash. The Filtrex unit will need only 250 gallons.
CUSTOM DESIGN & ENGINEERING - FILTREX will design and supply units to match the exact requirements of any particular application. Almost all systems are field tested and are configured for ease of integration with the end users' existing installations.
ALL FILTREX SYSTEMS ARE SKID MOUNTED & ready for connection with existing lines. Skids are available with optional equipment such as pumps, dewatering systems and other accessories needed to satisfy any particular service requirements.
The FILTREX Systems are Available in Several Sizes, Degrees of Filtration, System Control Options & Material of Construction.
Many factors are carefully considered when selecting the appropriate filter elements and housing. The following is a brief description of the most important factors.
(1) Nature of Contaminant - It is important to determine exactly what the filter is required to remove, and whether this material is hard, fibrous or gelatinous. This determination will assist in selecting the correct filter media and backwash specifications.
(2) Degree of Filtration - In general, the "finer" the filter medium, the more costly it is. Therefore, the most economical filter selection is accom- plished by determining as exactly as possible what removal rating is required to meet the particular filtration application. The most effective way of determining the removal rating is by conducting field tests. As this is not always possible, the following guidelines will be helpful:
(3) Compatability to the Filter Media - In order to insure proper filtration and system integrity, the filter media must be compatible with the material to be filtered. Knowledge of the operating conditions, such as the temperature, maximum differential pressures and service pressure is also important.
(4) Housing and System Material - Material of construction must be compatible with the process in which it is being used.
(5) System Size - Flow requirements, dirt loading, viscosity of fluid being filtered and pressure drop requirements will determine the number of filter candles necessary, and thus the size of the housing and connecting pipes. Since Filtrex supplies custom made units, sizing is available on request.SELECTING MODEL NUMBERS
(6) Selecting Model Numbers - Filtrex units are supplied in various sizes, type of materials & service configurations. The following is a breakdown of the Filtrex unit numbering system.