News Category: Environmental

Wastewater treatment technology doesn’t have to be new to be disruptive
July 20, 2020 Categories: Environmental - Opinion Piece

There is no doubt that disruptive technologies have the power to transform sustainability in the water sector, but it is important to realise that a technology does not need to be new in order to be disruptive. The widespread use of previously niche systems, or the novel use of well-established technologies like heat exchangers, can…

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Choosing the right heat exchanger for wastewater applications
July 8, 2020 Categories: Environmental - Opinion Piece

Heat exchangers are crucial to many processes in the water industry, in aerobic or anaerobic digestion plant, for cooling or evaporation, and for sludge concentration. Choosing the right heat exchanger can appear daunting, and maximising productivity is essential. WHAT IS PRODUCTIVITY? Productivity is measured by the ratio of output per unit of input. Many water…

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The benefits of heat regeneration in heat exchanger systems
March 11, 2020 Categories: Environmental - Opinion Piece

By Matt Hale, International Sales and Marketing Director, HRS Heat Exchangers Heat exchangers which employ heat recovery or regeneration should not be confused with ‘regenerative heat exchangers,’ which are a specific type of heat exchanger. What we mean by heat regeneration at HRS is the recovery of as much surplus heat (or cooling capacity) as…

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HRS helps AD plant tap into additional heat from existing CHP
January 22, 2020 Categories: Environmental - Opinion Piece

Operators of anaerobic digestion (AD) plants know how important it is to optimise energy use across all stages of the process. That is why many recapture as much heat as possible for reuse elsewhere, including from the hot exhaust gases generated by the combined heat and power (CHP) engines which turn the biogas from the…

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Understanding and preventing heat exchanger fouling
September 18, 2019 Categories: Environmental - Opinion Piece

When operating in exceptionally challenging conditions, or handling difficult materials such as sewage and wastewater sludges, even the best designed heat exchangers will be susceptible to fouling. Understanding the different types of fouling and what causes them will help engineers and operators pick the best type of heat exchanger for their particular application and keep…

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Spiral or corrugated tube heat exchangers – which is best for wastewater treatment?
September 3, 2019 Categories: Environmental - Opinion Piece

Since the first spiral heat exchanger was proposed back in the 19th century, they have become synonymous with the treatment of slurries and wastewater. However, in many situations the performance of a corrugated tube heat exchanger is equal to or better than that of a spiral design. Corrugated tube designs also provide a number of…

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