Wastewater and sewage treatment
Wastewater treatment and wastewater treatment plant
Besides the treatment of recycled water, the wastewater from a paper mill is also subject to a purification process. One of the main criteria for forwarding to municipal sewage treatment plants is the chemical oxygen demand (COD), which is caused by residues of process chemicals and additives. Our flocculants and defoamers act as system cleaners in this process.
Process auxiliaries
DEFOKALK® 450 FD
- Highly efficient product based on calcium hydroxide in suspension form for complete sanitation of the water cycle
- Regulates pH and reduces water hardness and organic acids in a fast reaction time
- Strengths of the paper are increased and the effectiveness of other auxiliaries used is improved
- Appearance: milky-white suspension / active ingredient (%): 45
Defoamer
DEFOSPUM® PWW 74
- Emulsion of fatty alcohols, without silicone and mineral oil components for application on the paper machine and in wastewater treatment plants
- Very effective in a wide pH and temperature range
- Biodegradable and approved according to FDA and BGA XXXVI recommendation
- Appearance: colorless liquid / viscosity (mPas): 200-600
Flocculants
DEFOFLOC® CL series
- Cationic liquid flocculant based on an emulsion of a polyacrylamide
- It is mainly used as a retention agent and dewatering accelerator on paper machines and in wastewater treatment plants
- Appearance: viscous milky liquid / viscosity (cP): 500-2000
DEFOFLOC® CP series
- Medium to high molecular weight polyelectrolyte based on a cationic acrylamide derivative
- Especially suitable as retention agent and dewatering accelerator at the paper machine and at wastewater treatment plants
- Appearance: white granules
