PRAESTOL OMA2515 DK is an anionic polyacrylamide designed for demanding solid–liquid separation tasks across multiple industries. With medium-to-high molecular weight and a moderate anionic charge density, it provides rapid floc formation, strong particle bridging, and excellent performance in systems containing fine suspended solids. Its stability, wide pH tolerance, and compatibility with common coagulants make it an indispensable chemical in municipal, industrial, and mineral-processing operations. Below is a comprehensive overview of its main applications and functional roles.

1. Municipal Wastewater Treatment

1.1 Sludge Dewatering

One of the most widely recognized applications of PRAESTOL OMA2515 DK is sludge dewatering in municipal wastewater treatment plants. Waste-activated sludge and mixed sludge contain a high concentration of hydrated flocs, colloids, and biological solids. OMA2515 DK improves sludge dewaterability by:

• Enhancing floc size and density

• Increasing separation efficiency in belt filter presses, centrifuges, and chamber filter presses

• Improving sludge cake dryness

• Reducing polymer consumption and energy usage

Because the polymer creates large, mechanically stable flocs, water drains faster, resulting in higher solid content in the sludge cake and lower disposal cost.

1.2 Primary and Secondary Clarification

In clarification basins, the polymer accelerates settling and improves turbidity levels. It binds fine suspended solids, organic matter, and microbial flocs, forming heavier aggregates that settle readily. This improves:

• Clarifier hydraulic loading capacity

• Overflow water clarity

• Efficiency of downstream treatment steps

It is especially effective during peak hydraulic loads or when influent characteristics fluctuate.

2. Industrial Wastewater Treatment

Industrial effluents often contain complex solids, colloids, dyes, pigments, metal compounds, emulsified oils, and organic contaminants. PRAESTOL OMA2515 DK is applied in a variety of industrial sectors, including:

• Textile dyeing and finishing

• Petrochemical plants

• Steel and metalworking

• Pharmaceutical manufacturing

• Electronics wastewater treatment

• Food and beverage processing

• Leather and tanning

• Chemical manufacturing

2.1 Clarification and Settling

The polymer enhances the removal of fine particles and colloidal impurities. When used as a flocculant after inorganic coagulant addition (such as PAC, alum, ferric chloride), OMA2515 DK helps form large, cohesive flocs that settle quickly, resulting in:

• Lower turbidity

• Higher COD/BOD reduction

• Improved compliance with discharge standards

2.2 Sludge Handling

Many industrial wastewater treatment systems generate sludge that is difficult to dewater. OMA2515 DK improves filterability, shortens dewatering time, and reduces sludge volume for disposal.

3. Mining and Mineral Processing

Anionic polyacrylamides such as PRAESTOL OMA2515 DK are essential in the mining industry, particularly where fine particle suspensions require thickening or dewatering.

3.1 Tailings Thickening

Mining tailings often contain extremely fine mineral solids. The polymer improves thickener performance by:

• Increasing settling rates in the clarification zone

• Enhancing underflow density

• Reducing overflow turbidity

• Improving recycling of process water

This is critical in operations such as:

• Coal washing

• Iron ore beneficiation

• Gold and silver extraction

• Copper and nickel processing

• Bauxite refining and alumina production

• Phosphate and potash mining

3.2 Filtration and Dewatering

OME2515 DK strengthens flocs so they withstand mechanical pressure during filtration. This leads to:

• Higher moisture reduction in mineral cakes

• Faster filtration cycles

• Improved equipment throughput

3.3 Water Recovery Systems

Mining operations rely heavily on water recycling. The polymer improves water clarity and reduces the volume of fresh water required.

4. Paper and Pulp Industry

In the paper industry, PRAESTOL OMA2515 DK plays several important roles:

4.1 Retention Aid

It helps retain fines, fillers, and fibers within the sheet formation process, improving:

• Paper strength

• Formation uniformity

• Mill productivity

4.2 Drainage Aid

By accelerating water release from the pulp, the polymer enhances dewatering at the wire or press section.

4.3 Wastewater Clarification

Paper mill effluents contain lignin, fibers, and chemical by-products. OMA2515 DK promotes fast settling and clear water discharge.

5. Potable Water Treatment

The polymer is used in surface water clarification, especially when treating water that contains high levels of:

• Clay

• Silt

• Algae

• Organic coloring substances

• Suspended solids due to seasonal rain

When combined with inorganic coagulants, it enhances floc strength and improves sedimentation efficiency, ensuring low turbidity in treated drinking water.

6. Environmental Engineering and Construction

OMA2515 DK also supports environmental protection and civil engineering activities such as:

6.1 Stormwater and Construction Runoff Treatment

It clarifies turbid water from excavation sites, tunneling, drilling, and soil disturbance.

6.2 Sediment Control for Earthworks

The polymer stabilizes fine particles and reduces erosion impacts by aggregating soil fines.

6.3 River, Lake, and Reservoir Restoration

For water bodies suffering from turbidity or algal blooms, OMA2515 DK accelerates settling of suspended solids.

7. Agriculture and Aquaculture

In agriculture, the polymer clarifies irrigation water and reduces soil erosion in furrow systems. In aquaculture, it helps maintain water clarity by removing suspended solids and sludge.

8. Oil & Gas / Drilling Fluids

Although not the primary sector for this grade, OMA2515 DK can be used to treat drilling waste, clarify produced water, and support solids removal systems at well sites.

Conclusion

PRAESTOL OMA2515 DK is an exceptionally versatile anionic polyacrylamide flocculant used across municipal wastewater, industrial effluent treatment, mining tailings management, potable water purification, paper processing, environmental engineering, and agricultural water treatment. Its ability to create strong, fast-settling flocs, improve sludge dewatering, enhance water clarity, and reduce operational costs makes it a critical chemical in modern water treatment and solid–liquid separation processes.