PRAESTOL¡ 857 BS

Flocculating Agents

Product Description

Composition: very high molecular, strong cationic polyelectrolyte based on a cationic acrylic acid derivate

Supply form: white granular material Charge type: strong cationic Bulk density: approx. 650 kg/m3 Viscosity (0.5 % in distilled water): approx. 3500 mPa.s Viscosity (0.1 % in distilled water): approx. 120 mPa.s Viscosity (0.5 % in tap water*): approx. 600 mPa.s Viscosity (0.1 % in tap water*): approx. 30 mPa.s pH-value (0.1 % in tap water*): approx. 4 Effective in pH range: 1 - 10

Range of Application and Mode of Action

PRAESTOL 857 BS is used mainly for waste The mode of action of cationic PRAESTOL water purification, as well as for thickening and products is based essentially on ion exchange dewatering of municipal and industrial sewage between the electrical charges along the polymer sludges (centrifuges, screen belt pres-ses, chain present in aqueous solution and the surface chamber filter presses). The product is specially charges on the suspended solid particles. The suitable for applications where the formed flocs particle surfaces are destabilized, thus bringing are subject to high shear forces. about coagulation or flocculation.

Application/Dosage

PRAESTOL 857 BS is used as a dilute solution Experience has shown that in mechanical sludge (approx. 0.1 %). For preparation of stock dewatering the quantities required in order to solutions (approx. 0.5 %) the original product is achieve a high machine throughput and added to water with uniform stirring. After a discharge water free of settleable materials is dissolving period of approx. 60 minutes (at a between 2 and 6 kg polymer per ton of dry solids temperature of ≥ 15 °C), the solution is mature in the sludge. When used as a sedimentation and is thus ready for use. Owing to the very accelerator or clarifying agent (in static variable properties of the sludges to be sedimentation processes), only a few grams of dewatered, the required addition quantities for a polymer per cubic metre of slurry to be clarified particular application can only be determined by are required. carrying out laboratory tests and industrial trials.

Stockhausen GmbH & Co.KG Bäkerpfad 25 Phone +49-2151-38 01 e-mail:[email protected] 1/2 Business Unit Water Treatment D-47805 Krefeld Fax +49-2151-38 18 74 http://www.stockhausen.com

Working Safety and Accident Prevention

In case of spillage/leakage: Caution: Severe skidding hazard in combination residue carefully from the road by spraying with a with water and moisture. Keep public away from strong water jet. the danger area! Completely remove/reload the Safety Measures: Prevent dust development in dry product. Completely remove and store case of dry product! Avoid contact with the eyes! moist/liquid product with sand or binders. Repeat Avoid extended contact with the skin! Rinse off this procedure as required. Remove minor the product after handling/touching!

Storage

High molecular flocculating agents, such as atmospheric moisture. Contact with water (drops) PRAESTOL 857 BS are all basically sensitive to can cause localized lump formation. The product the effect of moisture, for example in the form of must therefore be stored in dry, closed containers condensation water, water spray or splashes and and protected from moisture.

Water hazard class: 2 (self classification)

Storage Stability when Stored Correctly

Granular material in original packing container: at least 12 months 0.5 % stock solution in tap water*: at least 1 week 0.1 % ready-to-use solution in tap water*: at least 1 day

* Krefeld tap water: approx. 25 °dH (degrees of German hardness) pH-value approx. 7, conductivity: approx. 600 µS/cm

Supply Containers

25 kg sacks on palettes of 625 kg 500 kg bulk bags

Business Unit Water Treatment Information given above corresponds to the current status of our knowledge and experience, and is intended to advise without obligation. The given data do not represent specifications! Please adapt all data concerning the use of our products to the conditions existing in your particular application and to your materials.

36616/29.08.2012

Stockhausen GmbH & Co.KG Bäkerpfad 25 Phone +49-2151-38 01 e-mail:[email protected] 2/2 Business Unit Water Treatment D-47805 Krefeld Fax +49-2151-38 18 74 http://www.stockhausen.com