Praestol LT 27 DK is a high-performance cationic polyacrylamide (CPAM) flocculant supplied in dry granular form and widely used for sludge dewatering, wastewater clarification, and solid–liquid separation across municipal and industrial treatment systems. It is characterized by high molecular weight, medium-to-high cationic charge density, fast dissolution, strong floc strength, and excellent water-release performance. Because most sludge particles and organic colloids in wastewater possess negative surface charges, Praestol LT 27 DK works effectively through charge neutralization and polymer bridging, producing compact, shear-resistant flocs that significantly improve downstream separation efficiency.

1. Municipal Wastewater Sludge Dewatering

The core application of Praestol LT 27 DK is in municipal wastewater treatment plants (WWTPs) for sludge conditioning and mechanical dewatering. It is compatible with all major dewatering equipment, including:

• Belt filter presses

• Decanter centrifuges

• Screw press dehydrators

• Plate and frame filter presses

Praestol LT 27 DK is highly effective on waste activated sludge (WAS), digested sludge, primary sludge, and mixed sludge. It rapidly agglomerates fine sludge particles into large, dense flocs, which improves:

• Cake dryness (higher dry solids content)

• Water separation speed

• Filtrate clarity

• Overall plant stability

By reducing sludge volume and moisture content, the product helps lower transportation, incineration, landfill, and post-treatment energy costs, making it a cost-effective solution for municipal operations.

2. Industrial Sludge Dewatering

Praestol LT 27 DK is extensively applied in industrial wastewater treatment plants, particularly where sludge contains high levels of organic matter, oils, pigments, and fine chemical residues. Typical industries include:

• Chemical and petrochemical plants

• Pharmaceutical manufacturing

• Textile dyeing and finishing

• Printing ink and pigment production

• Electroplating and metal surface treatment

• Rubber, resin, and plastics processing

In these industries, sludge is often highly compressible and difficult to dewater. Praestol LT 27 DK produces strong, compact flocs that resist shear forces, enabling faster dewatering, improved filter press throughput, reduced polymer consumption, and lower cake moisture. It also stabilizes sludge performance when influent wastewater quality varies significantly.

3. Wastewater Clarification and Suspended Solids Removal

In addition to sludge dewatering, Praestol LT 27 DK is widely used for wastewater clarification and suspended solids removal as either a primary flocculant or coagulant aid. It is particularly effective for wastewater rich in organic colloids and fine suspended solids, such as:

• Papermaking white water

• Food and beverage processing effluent

• Slaughterhouse and rendering plant wastewater

• Brewing, fermentation, and distillery wastewater

• Pharmaceutical and fine chemical effluents

In clarification units, dissolved air flotation (DAF) systems, and lamella settlers, Praestol LT 27 DK accelerates particle aggregation, flotation, and sedimentation, resulting in:

• Lower turbidity in treated water

• Reduced COD and TSS

• Improved hydraulic loading capacity of treatment units

Its ability to form dense flocs improves both settling and flotation performance, making it suitable for a wide range of clarification technologies.

4. Papermaking Industry Applications

In the pulp and paper industry, Praestol LT 27 DK serves multiple purposes:

• Paper mill sludge dewatering agent

• White water clarification flocculant

• Retention and drainage aid in the wet end

Paper mill sludge contains large quantities of cellulose fibers, fillers (kaolin, calcium carbonate), inks, and organic additives. Praestol LT 27 DK efficiently aggregates these particles, greatly improving sludge dewatering efficiency and press productivity. As a retention aid, it enhances the capture of fine fibers and fillers on the wire section, improves drainage rate, stabilizes sheet formation, and contributes to improved machine speed and paper quality.

5. Oilfield, Refinery, and Petrochemical Wastewater

Praestol LT 27 DK is widely used in oilfield produced water treatment, refinery wastewater clarification, and oily sludge dewatering. These waste streams contain complex mixtures of:

• Emulsified oil

• Polymer residues

• Drilling solids

• Organic sludge and surfactants

The polymer promotes rapid aggregation of oil–solid particles, improves separation efficiency in DAF units, clarifiers, and mechanical dewatering systems, and enhances oil–water separation performance. This leads to:

• Cleaner reclaimed water

• Lower residual oil content

• Improved compliance with environmental discharge regulations

6. Food Processing and Beverage Industry

In the food and beverage sector, wastewater typically contains high concentrations of starch, proteins, fats, sugars, yeast, and suspended biomass. Praestol LT 27 DK is applied in:

• Slaughterhouses and meat processing plants

• Dairy production facilities

• Breweries and distilleries

• Sugar mills and starch processing plants

It rapidly binds organic suspended matter into dense flocs, significantly improving DAF flotation efficiency, sedimentation rate, and sludge dewatering performance. This reduces the load on biological treatment systems and lowers overall sludge handling costs.

7. Mining, Metallurgy, and Mineral Processing

In mining and metallurgical industries, Praestol LT 27 DK is mainly used for:

• Sludge thickening and dewatering

• Clarification of process and tailings water

• Conditioning of thickener underflow

It helps improve settling rate, cake filtration performance, and water recycling efficiency, especially in metal hydroxide sludge and fine mineral residue treatment.

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praestol LT 27 DK

praestol LT27 DK

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