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Slop water is a byproduct of cleaning operations on offshore oil and gas rigs, contaminated with hydrocarbons, chemicals, and various wastes. Additionally, it may contain corrosive salts, drilling muds, formation water and solid impurities, posing significant environmental and operational challenges.

Across various processes in the oil and gas industry, including the treatment of water, strict adherence to environmental regulations is crucial. To meet the standards set by the International Maritime Organization (IMO), GEA offers specialized high-performance, self-cleaning centrifugal separators and clarifying decanter centrifuges. The goal is to efficiently reduce the oil content to levels below the legally specified limits, often set at 15 ppm or 5 ppm in some regions.
Continuous and reliable operation, along with cost-effective features such as reduced disposal costs and low energy consumption, makes GEA's solutions suitable for both offshore and onshore applications. The emphasis on compliance, efficiency and cost-effectiveness is a common thread in addressing the challenges posed by oil-contaminated water in the oil and gas industry.
To guarantee adherence to prescribed limits, we employ a specialized oil-in-water measuring device. This device monitors the aqueous phase, ensuring the de-oiled water meets environmental requirements. If oil levels exceed the set standard, the liquid is recirculated to the slop water tank and only released when it meets the necessary purity criteria.
All these various possible compositions make an overboard discharge of slop water inadmissible due to existing environmental regulations, so that they have to be treated before discharge. GEA's approach allows for on-site slop water treatment, eliminating the need for costly transportation to shore for processing and disposal. By efficiently treating slop water at its source, our solution not only ensures compliance with regulations but also minimizes the environmental impact and reduces operational costs.

High-efficiency slop water treatment utilizing disk stack centrifuges
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GEA separators are designed for liquid-based applications. Using centrifugal force, they are used for separating suspensions consisting of two or more phases of different densities, i.e. they can be used for liquid-liquid separation, for liquid-liquid-solid separation or for liquid-solid separation. They are equally as effective at separating liq...

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...
GEA centrifuges enable wastewater reuse, resource recovery, and water security by turning biosolids into value in a world facing growing water scarcity.
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