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Fischer Edelstahl - Wastewater Treatment
Fischer Edelstahl GmbH, a company based in Achern in Germany, has a hall for washing machine parts and transport equipment soiled with various substances, including cooling lubricant emulsions. The assembly cleaning process, which involves a high-pressure cleaner, a part washing machine and floor cleaning machines, produces approximately 3 m³ of wastewater as a result of rinsing and cleaning each day.Once the wastewater has undergone physical pre-treatment it is still contaminated by emulsions and heavy metals to such an extent that the prescribed values for safe discharge into the sewage system cannot be achieved. Therefore, the Lugan® 1500 emulsion separation plant is used to treat the wastewater physico-chemically following the metered addition of the Envifloc® flocculating and neutralising agent and a small quantity of compressed air. The resulting flotate sludge is separated from the clean water and transferred to a sludge dewatering system. The clean water, which complies with the required limit values (KW < 20 mg/l in accordance with the German Wastewater Ordinance, Annexe 49 and with a pH value of 6.5 to 9.5), flows into the sewer.
The plant was designed in accordance with the following basic principles:
- High level of cleaning performance
- Central waste disposal
- Low investment and operating costs
- Minimal effort required for operation and maintenance
- Tried-and-tested plus robust plant design
Performance data
Quantity of wastewater Max. 1.5 m³/h
Chemical contamination Fats and mineral oils Solids, heavy metals max. 100 mg/l Hydrocarbons max. 1000 mg/l
Technical data
Required space: 16 m²
Control: PLC, process visualisation