Task
For 120 years, Harold Scholz has been a prominent player in color pigment manufacturing and preparation. With a global customer base in 85 countries, this respected company has made a name for itself by providing pigments in various forms such as powders, stable dispersions, compact pigments and granules for a wide range of industries and applications.
In line with its commitment to environmental protection and compliance with legal regulations, Harold Scholz & Co. GmbH has invested in innovative wastewater treatment technologies. These technologies enable proper discharge into the public sewer system. This not only helps to protect the environment, but also ensures compliance with all applicable regulations.
Design data
Preparation quantity:
- 18m3/d
Target parameters:
- Hydrocarbons and heavy metals according to discharge values as per permit
Solution & implementation
Our comprehensive process for cleaning and treating cleaning wastewater in color pigment production consists of several key steps:
1. homogenization tank: To begin with, the cleaning wastewater is fed into a tank where it is thoroughly homogenized to ensure a uniform consistency.
2. 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.
3. 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).
4. chamber filter press for dewatering: The resulting sludge and the separated impurities are dewatered in a chamber filter press, which significantly reduces disposal costs.
5. gravel filter for final purification: Finally, the treated wastewater is pumped through a gravel filter(ALMA FIL) to remove the last insoluble pollutants from the wastewater.
Similar projects
Walki Ekopak S.A., ALMA CHEM MCW, ALMA FIL
Treatment of 4m3 of wastewater per day from the printing of packaging using the flexographic printing process. Wastewater treatment using a precipitation/flocculation plant and final filtration for Walki Ekopak S.A.
Harold Scholz & Co. GmbH, ALMA CHEM MCW, ALMA FIL
Treatment of 18m3 of cleaning wastewater per day from color pigment production with a precipitation/flocculation system and final filtration for Harold Scholz & Co. GmbH.