Overview
Cooling towers recirculation water is large in volumes and gets easily contaminated with suspended solids, atmosric dust, microbiological organisms, various airborne debris and sometime particulate of rusted metal coming out from heat exchangers. These contamination and impurities get settled either in cooling tower pond or deposit on the surface of Heat exchangers and significantly decrease the performance of cooling tower circuit. Under these circumstances, significant improvement might be realized with the use of a side stream filter and pond cleaning accessories.
Our unique design of Side Stream Filter and cooling tower pond accessories ensures efficient & effective removal of suspended solids & other contaminations and reinforce healthy conditions of cooling tower and associated heat exchangers.
Shubham SSFs are available in diameters from 0.225 Mts. to 4.0 Mts.(vertically) and in length from 3.0 Mts. mm to 11 Mts. (Horizontally) with flow ratesup to 500M3/Hr. These rugged, pre-engineered, pre-assembled units minimize installation and start-up costs.
Working Principle
Water from the system is pumped through the top of the filter tank and distributed evenly over the media. Suspended particles are trapped in the filter media. The filtered water then passes through the media bed and reaches under drain assembly at the bottom of the filter and returns to the piping system.
Type of Installation
Direct piping connection: – Inlet and outlet of SSF are directly connected to main stream pipe and utilize main stream pumps for further filtration process which eliminates the requirement of extra pumps.
Cooling tower pond Connection: – This type of installation need additional pump which is directly connected to cooling tower pond at suction side and feed water into SSF for further filtration process and filtered water goes back to the cooling tower pond at the opposite of pump suction.This recirculates entire pond volume and does not depend on main stream pump and its operation.
Flow : 1M3/Hr. - 500 M3/Hr.
Inlet TSS : Up to 50 Mg/L
Inlet Turbidity : Up to 40 NTU
Filtration Velocity : 18 to 30 M3/Hr./M2
Diameter (Vertical Vessel) : 0.225 Mts. - 4.0 Mts.
Length (Horizontal Vessel) : 3.00 Mts. - 11.0 Mts. MOC : FRP / Mid Steel / Stainless Steel Coating /
lining
:
Epoxy / FRP / Rubber v>
Filtration Rating : Up to 10 Micron
Design Code : ASME / IS
Design Pressure : Up to 10 Bar
Working Pressure : 1.1 to 3.5 Bar
Clear Pressure Drop : 0.3 bar
Top distribution system : bell mouth
Bottom distribution system : Strainer plate or Header & laterals.
Key Features
• Simple design maximizes reliability and efficiency
• Two or Multi layers of filtration media
• Filtration rating up to 10 – 30 Microns
• Standard and effective quartz sand media.
• Low Pressure drop across the vessel
• FRP, MSRL, MSEP & SS Vessels are available.
• Manual, Semi-Automatic and Automatic features are provided
• Pre-assembled construction minimizes start-up time and installation costs
• Structural steel legs provide rigid support of vessel for safety
• Air scouring available for high flow pressure vessel.
• Proven design of internal distribution and collection system.
Benefits
• Reduced Corrosion Rates
• Increased Equipment Life
• Better System Efficiency
• Reduced Maintenance Costs
• Better Chemical Control
• Reduce overall chemical cost
• Reduce Cleaning frequency
• Maintain Temperature variation.
Applications
Cooling Tower & Process Water Treatment
• Turbidity & Total Suspended Solid Removal
• Side Stream Filter
• Full Stream Filter
• Make up water Filter
WHY & WHEN SIDESTREAM FILTERS?
The installation of a sidestream filter is a capital expense, which may be hard to justify in most plants. Consider the following as indications that a plant should look into the possibility of installing a filter.
The primary makeup is from an unclarified water source (river, sewage treatment, etc.) that is high in suspended solids and/or iron.
• The system is having a difficult biological problem even though a good biocide program is in effect.
• Heat exchangers are opening dirty even though a good antifoulant program is being used.
• Excessive corrosion rates can be traced to fouling.
• Loss of heat transfer is attributed to deposition rather than corrosion.
• High levels of solids are building up in the sump.
• Heat exchangers require frequent mechanical cleanings.
