When less is more
Virtually all kinds of industrial activities and urban development result in sludge that is normally of little or no commercial value. Consequently, it represents a large disposal problem that is often costly to deal with. Alfa Laval’s efficient solutions for reducing the volume of wastewater help to decrease disposal costs significantly.
We deal with all kinds of sludge, whether it comes from simple natural sedimentation, secondary biological treatment or advanced chemical treatment.
We treat:
- Municipal waste. We are involved in the processing of sludge from the public sector from at least 200 million people.
- Industrial waste. Our solutions are used in more than 1,000 industrial applications.
- Water at water works. Our systems help produce 1.5 million cubic meters of potable water every day.
Three Alfa Laval products are of vital important in the wastewater treatment process.
- Decanter centrifuges for sludge dewatering reduce transportation and disposal or drying costs while limiting negative effects on the environment. We also offer a decanter autopilot optimizing plant operation around the clock
- Drum thickeners, used for thickening before dewatering, reduce sludge volume by up to 90% and improve the overall operation economy.
- Spiral heat exchangers preheat the sludge to 60 degrees Celsius making it easier to dewater. They are also used for sludge pasteurization to meet even the most stringent environmental legislation as well as for digestion heating and effluent cooling for efficient overall performance.
- Membrane filtration bioreactors remove unwanted micro particles from the wastewater.