SEPARATION TECHNOLOGY FOR THICKENING SURPLUS SLUDGE Increased utilization and energy yield: Flottweg OSE decanter systems & Viscobreaker Engineered For Your Success

CONTENTS More profitability for municipal waste water treatment plants Page 02 More efficiency without conversion work Page 03 The advantages of OSE technology Page 04 More efficient thickening of surplus sludge Page 05 In detail: The advantages of Flottweg centrifuge technology Page 06 The features of Flottweg OSE decanters Page 07 Even more efficiency with the Viscobreaker Page 08 Reliable processes and lower costs with InGO Page 10 Flottweg quality and service Page 12 1 BACK TO TABLE OF CONTENTS -> —

MORE PROFITABILITY FOR WASTE WATER TREATMENT PLANTS Rising costs and increasing efficiency pressures pose major challenges for municipal waste water treatment plants. Anyone looking to operate more efficiently while also tapping into energy-saving opportunities will quickly come across two key levers: process optimization and the consistent use of biogases. When implemented correctly, this can lead to potential savings of up to 30% – without compromising cleaning performance. A key factor lies in the dewatering of sewage sludge. This has a significant impact on the entire digestion process: Consistent...

SUCCESS IS … WHEN EFFICIENCY COMES EASY In a waste water treatment plant, the basic processes and structural conditions are usually already fixed. For that reason, no changes need to be made to benefit from Flottweg OSE thickening technology (OSE: Optimum Sludge Thickening) with industrial centrifuges. All you need is a Flottweg OSE decanter upstream of the digestion process instead of a conventional thickener – and then a Flottweg HTS Decanter® (HTS is the German acronym for “high dry substance”) for optimum dewatering. The OSE thickening technology ensures a stable, controllable and reproducible...

How to significantly reduce your costs in the thickening process The concentration of solids in mixed sludge is usually only 1 to 2 % - far too low for economical and efficient digestion. At the same time, digesters cannot be easily expanded due to the high investment costs. Space, budget and approvals all set clear limits. The economical solution is to further thicken the sludge - which is made possible with Flottweg decanter centrifuges. The thickened sludge achieves a solids content of 5 to 8 % or more. The result: up to 90 to 95 % less sludge volume with the same amount of solids. Less volume...

MORE EFFICIENT THICKENING OF SURPLUS SLUDGE During biological waste water treatment, large quantities of surplus sludge are produced in a very diluted form (approx. 0.5 – 1 % dry substance). To feed the digester optimally, this sludge must be thickened. With the OSE decanter, the sludge can be thickened to a dry substance content of 5 to 8 %. Uniform and constant feeding of the digester is crucial for: ∙ ∙ ∙ ∙ Maximum gas yield Optimum process conditions Low back-loading of the plant Low energy consumption by the digester The Flottweg OSE decanter handles the continuous thickening of the surplus...

For years, Flottweg OSE thickening decanters have proven themselves in large-scale plants such as those in Hamburg, Duisburg/Oberhausen and Berlin, establishing themselves as among the most reliable and cost-effective solutions for thickening surplus sludge. That said, they can also achieve their full potential in smaller waste water treatment plants: The operating costs of a Flottweg OSE decanter are significantly lower over the entire service life than the costs for classic thickening processes. There are several reasons for this, which are a direct result of our decanters: • Minimal to no...

• Low space requirements allow you to invest in replacements without the need for structural work • Maintenance-friendly, easily accessible design promotes maximum availability and minimum downtime during servicing • Replacement of spare and wear parts, as well as operational safety checks (accident prevention regulations), are generally carried out on site • Automatic 24-hour operation, including scheduled switching on/off • Already 4.0 - all remote monitoring and maintenance options on request • Individual integration of the centrifuge controller into your overall control system for maximum...

EVEN MORE ECONOMICAL THANKS TO FLOTTWEG VISCOBREAKER significant advantages in terms of the process and energy consumption. Flottweg OSE decanters optimize the digestion process of your waste water treatment plant. But that’s not all: An additional process for disintegrating the sewage sludge opens further opportunities for optimization. Flottweg offers a separate unit especially for this application: the Flottweg Viscobreaker. When combined, disintegration (Viscobreaker) and thickening (OSE decanter) form a particularly effective team. The Viscobreaker is a stand-alone unit and can be set independently...

The advantages of disintegration for the digestion process* Energy savings on units such as pumps ∙ Significant reduction in the viscosity of the thickened sludge, ideally by over 45 % ∙ Reduction of the pipeline pressure by up to 50 % ∙ Additional energy savings across the entire sludge treatment process Process optimization in the digester and during downstream dewatering ∙ Reduced hydraulic load on the digestion plant and extended digestion time ∙ Increased gas yield during sludge digestion ∙ Reduction in the amount of sewage sludge produced ∙ Reduced clogging leads to fewer operating problems...

Start Decanter Each Flottweg centrifuge is equipped with a pre-installed and factory-tested control package including the InGo operating concept. The Flottweg automation package offers you the following • High process reliability combined with low costs thanks to an intuitive operating concept • High functional reliability thanks to climate-controlled control cabinets for safe operation under extreme conditions such as heat, dust and moisture • Worldwide support is possible thanks to the integrated remote maintenance system: direct, secure VPN connection to all network participants of the Flottweg...