Industrial effluents
Tailings, the residual materials left after mineral extraction, pose significant environmental challenges due to their high water content and potential contaminants. Effective dewatering of these tailings is essential to minimize environmental risks and comply with regulatory standards.
In leather production water is not only needed for transportation in the production process but also for various tasks such as unhairing or soaking the hides. As a result of the specific production methods, the waste water not only has high alkaline levels (pH value 10), but is also contaminated with chemicals such as sulfite and chrome, and has a high level of organic substances. Biochemical processing of the waste water is a standard operation in many installations and GEA decanters lay a significant role.
After the waste water has been collected from the tanning process and polymer has been added, the decanters continuously separate all organic solids such as hair from the thickened sludge. The separated solids can be composted and find application, for example, in horticulture or forestry. The liquid phase is then subjected to biological treatment. The resultant sludge is recycled into the dewatering process; the waste water can be sent safely to conventional municipal waste water treatment plants. The advantages of decanters provide optimum dewatering capacity and use very little rinsing water. The closed system prevents aerosols from escaping; such aerosols would otherwise pose a hazard for humans and the environment.
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The decanter’s hour has come as soon as the solids content in the suspension to be processed is particularly high. These machines provide the benefits of high clarifying efficiency and maximum dewatering as well as the separation of liquids with the simultaneous removal of solids. The main requirements in this respect include a high bowl speed, a...
Jet pumps, also referred to as ejectors, are devices for the conveyance, compression or mixing of gases, vapors, liquids or solids and for the production of vacuum in which a gaseous or liquid medium serves as the motive force.
Ports now compete not just on logistics, but on sustainability. At Greece’s Piraeus port, an advanced processing and recovery facility recycles ship waste oil into fuel. Equipped with GEA’s high-performance centrifuges, it sets a new benchmark for state-of-the-art, environmentally responsible port operations.
The 2022 CO2 shortage forced breweries to review their dependency on global supply chains. Many were forced to close, unable to carbonate their products. At its breweries in Germany, OeTTINGER GETRÄNKE is turning its own CO2 into a powerful lever for independence and sustainability – with the help of CO2 recovery technology from GEA.
In a shifting political and economic landscape, GEA stays the course. We spoke with Dr. Nadine Sterley, GEA’s Chief Sustainability Officer, about why sustainability remains central to the company’s business strategy, how GEA is progressing on its ambitious goals and what it takes to turn words into action.