Articles & Case Studies

Hidrostal mixers mitigate site downtime

Posted: Thursday 19th September 2019

Hidrostal has provided a catchment of 46,850 people with years of maintenance free waste water treatment by replacing the previously installed in-tank propeller mixers at the Waste Water Treatment Works with their HidroMix external mixing pumpsets.

An important stage in the waste water treatment process is to keep the solids in suspension in the sludge holding tanks, a process which is often managed using in-tank propeller mixers. The downside to this method of mixing is that solids can build up in the tanks. This had been the case for the WwTW which had resulted in a periodic shut down of the site in order to dig out the accumulated solids.

Hidrostal supplied two of their E08R standard mixers with bearing frame pumps on mounted baseplates to replace the propeller mixers. The HidroMix system supersedes the traditional method of mixing with an external mixing capability which employs a very simple system of pumped recirculation. Unlike other mixing systems the Hidrostal concept does not require structural steelwork within the tank. The system is mounted at ground level and fixed to the outside of the chamber. Large diameter nozzles are installed externally through the tank walls resulting in minimal friction losses with maximum energy imparted to the fluid.

The beauty of the HidroMix concept is that maintenance problems are vastly reduced due to the complete elimination of static and moving parts within the tank. Good compliance with CDM regulations reduces Health & Safety risk and mounting the pump outside the tank at ground level ensures it is easily accessible for installation, inspection and maintenance. Normal 0 false false false false EN-GB X-NONE X-NONE




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September 2019

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