Energy
Effluent water from power plants
The treatment of waste water is strictly controlled by national and international laws. Waste water may only be discharged after prior de-oiling with specially approved treatment systems. The maximum oil content must not exceed 15 ppm. The limit has even been reduced to 10 ppm in some areas.
Protect the Environment
Oily water may only be discharged if the oil content in the effluent is below 15 ppm. 15 parts of oil to one million parts of water seems small but GEA believes this is still too high. Moreover, practice has shown that this value is not attained in many conventional plants under practical operation conditions anyway. The further we can reduce this value, the greater the benefit for our environment.
Waste water is a mixture of the following constituents:
- Cooling water leakages
- Fuel and lube oil leaks
- Drainages from settling and sludge tanks
- Effluent from various cleaning processes
The product (i.e. oily water without excessive emulsion) is sucked up from the oily water tank and fed by the feed pump through the filter and pre-heater via the feed valve to the separator. During the start-up or ejection program it is led back into the oily water tank.
The product flows from above into the centre of the separator bowl. The heavy water phase is separated from the finest oil particles and then conveyed under pressure by a centripetal pump to the discharge.
Products & Technologies
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Centrifugal Separator
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...
Jet pumps
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.
Separator
The separating centrifugal separator is a machine in which two liquids of different densities are separated from each other. Solids may also be separated at the same time.
Solid-Wall Bowl Separator
There are two versions of disk-type separators with solid wall bowl: separators used for separating two mutually insoluble liquids, and clarifiers used for separating solids from liquids. All functions are similar to the function of the clarifier and separator types with self-cleaning bowl.
