Task
A leading specialty chemicals site in Leipzig produces around 20 m³ of process wastewater per week from the production of specialty chemicals, metal compounds and chromium salts. This wastewater contains heavy metals, AOX, hydrocarbons and chromium(VI), among other things, and must be reliably pre-treated in accordance with the requirements of the Wastewater Ordinance, Annex 40.
The aim of the project was to renew the existing equipment and replace it with a modern chemical-physical batch plant that ensures robust process control and reliable compliance with the limit values.
Technical design of the CP system
The new ALMA CHEM MCW system has been specially designed to meet the requirements of the site and consists of the following core components:
Precipitation and process additives: ALMA Additive NS & ALMA Additive OS
Primary precipitation and flocculation: ALMA Floc FE40
Neutralization: ALMA Lime
Flocculant: ALMA FHM A10
All process additives used come from our own product line ALMA AQUA - for maximum efficiency and operational reliability.
Batch operation: Flexible treatment for fluctuating wastewater volumes
Sludge dewatering: chamber filter press for efficient disposal
Post-treatment: gravel filter(ALMA FIL) for the retention of fine particles
Polishing: Ion exchanger(ALMA ION) for the safe elimination of chromium(VI)
Result & customer benefit
The new CP system ALMA CHEM MCW is an efficient and economical solution for the pre-treatment of process wastewater in the specialty chemicals industry.
Safe compliance with the limit values according to Annex 40
High flexibility with variable wastewater flows (approx. 20 m³/week)
Reduction of metals, AOX, hydrocarbons and chromium(VI)
Optimized sludge dewatering with low disposal costs
Future-proof operation thanks to modular expandability
Conclusion
With this project, ALMAWATECH was once again able to demonstrate its expertise in chemical-physical wastewater treatment. The customized design of the ALMA CHEM MCW ensures that the site in Leipzig will continue to meet the strict legal requirements in the future and at the same time benefit from an efficient, reliable and sustainable solution.
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