Ancillary and Optional Equipment
Pipework and Access Structures
Watermiser’s sister company Dustacco Engineering Ltd is a pipework and mechanical installations contractor with in-house welding and fabrication capabilities.
Watermiser works collaboratively with the Dusatacco Engineering design team in the design and manufacture of base-frames, ancillary and supplementary pipework and access structures as required, including:
- Interconnecting pipework, valving and gauges between the tower and heat exchanger, manufactured in thin-wall 304 stainless steel
- Bespoke designed and fabricated structural steel base-frame, hot-dipped galvanized post-manufacture
- Safe and permanent access structure to carry out routine inspections, tower cleaning and maintenance work
- Modular supplied and fitted galvanised steel access structure, tailor-designed to suit the tower and site location
Sidestream Filtration
Depending on the locale or the application, the process water would benefit from filtration to prevent build-up of debris within the tower and associated pipework and pack.
A hydrocyclone filtration unit is designed for sidestream filtration on cooling towers, evaporative condensers and open-circuit systems for removal of suspended solids and sludge. A sidestream flow is drawn from the cooling tower sump and cleaned continuously by the filter before being returned to the sump. Suspended solids which collect in the filter are purged to drain automatically using a timer-controlled auto-purge valve.
 Benefits of Sidestream Filtration
Ease of Maintenance
Sidestream filtration minimises excessive liquid loss or downtime - because there is no sand media or screen to flush clean or replace. Backwashing and schedule shutdowns are unnecessary.
Reduced Risk
There are a number of aspects of sidestream filtration which lower the risk of water contamination.
- Unlike other filter types, the cyclone design cannot harbour bacteria and re-infect systems.
- This method of filtration of cooling water reduces chemical treatment requirements of the cooling system by removing suspended solids, which harbour and encourage biological growth.
- Where continuous usage or access limitations may preclude frequent shutdowns for cleaning and fill pack removals, the HSE Code of Practice HSG274 (Part 1) recommends filtration of cooling systems to reduce the risk of Legionella. Sidestream filtration meets this recommendation.
Ease of Install
The compact modular system has minimal space requirements and is readily manhandled into position (no site assembly or lifting equipment).