Task
Since 1929, Kalle Casings GmbH & Co. KG has been a renowned manufacturer of cellulose and plastic casings for sausages. With a proud tradition, Kalle is today one of the leading producers of polymer, viscose and fiber casings and produces an impressive 850 million meters of sausage casings annually.
Our responsibility at Kalle Casings included the efficient purification of wastewater and rinse water generated during plastic casing production at the Wiesbaden site. We are proud to make our contribution to sustainable wastewater treatment and environmental protection.
Design data
Preparation quantity:
- 10m3/d
Target parameters:
- Neutralization
- Reduction of various wastewater constituents to comply with the limit values for discharge into the wastewater sewer
Solution & implementation
Our comprehensive process for cleaning and treating rinsing and production wastewater from the manufacture of plastic casings consists of several key steps:
Stacking tank for homogenization: Initially, the rinsing and production wastewater is fed into a stacking tank where it is thoroughly homogenized to ensure a uniform consistency.
Precipitation reactor with wastewater chemicals: In the next step, the wastewater is treated in the precipitation reactor using precipitants. This step aims to precipitate dissolved wastewater constituents. In addition, the pH value is adjusted to a neutral range by adding neutralizing agents.
Addition of flocculants and sedimentation: In the next process step, flocculants are added. The previously precipitated particulate substances combine to form larger sludge flocs. These are separated from the treated wastewater in the sedimentation reactor(ALMA CHEM MCW Modular).
Chamber filter press for dewatering: The resulting sludge and the separated impurities are dewatered in a chamber filter press, which significantly reduces disposal costs.
Gravel filter for final purification: Finally, the treated wastewater is pumped through a gravel filter(ALMA FIL) to remove even the last insoluble pollutants from the wastewater.
The entire system technology was installed in an XXL ALMA module. This makes it easy to expand the system if required and does not take up any valuable operating space, as the ALMA module can be installed outside the operating building. If you would like more information about our innovative wastewater treatment technology, please do not hesitate to contact us.
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