If the wastewater quantities are small but the temperature is very high, recovery may be economical. In this case, the wastewater heat exchanger can be operated discontinuously (batch operation).
Recovering Industrial Wastewater Heat and Reducing Wastewater Temperatures
Using the thermal energy of process water to reduce operating costs
Much of the industrial wastewater comes from the food production sector: slaughterhouses, breweries and beverage industry, distilleries and dairies.
Wastewater from the chemical industry or mineral oil processing is also part of industrial wastewater. Independent of the specific industry sector, these different types of wastewater have one thing in common: the high energy content of the wastewater streams.
Recovering thermal energy from process water
The reuse of thermal energy already contained in the production cycle is becoming increasingly important these days. To this end, considerable amounts of thermal energy can be recovered, especially from industrial process water with high temperature levels, in order to raise fresh process water, for example, to the temperature level required for the actual production process. If this is not practical, then there is the possibility of feeding this energy to other processes or using it for other purposes (e.g. energy contracting).
Cooling industrial wastewater
Industrial wastewater can either be treated in a company’s own separate wastewater treatment plant (direct discharger) or, after possible partial treatment, be discharged to a public wastewater treatment plant (indirect discharger). Regardless of whether treated wastewater is discharged directly into a receiving water body or into the public sewer system, it must be ensured that the discharge temperatures are not too high and that the required limit values are complied with.
Two HUBER Heat Exchangers RoWin for heat recovery from process water.
The HUBER Heat Exchanger is available in different sizes.
Process Technology
HUBER solutions for wastewater heat recovery and wastewater temperature reduction
A particular challenge when using heat exchangers for industrial process water and/or wastewater is when the medium tends to form a film on the heat exchanger surfaces. The more build-up there is, the more the heat transfer capacity and efficiency is reduced.
With the HUBER Heat Exchanger RoWin, HUBER has developed a self-cleaning heat exchanger that ensures permanently high and efficient energy transfer.
For the removal of coarse contaminants and larger solids from wastewater or process water, HUBER offers a comprehensive range of screens and screening systems.
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