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DuoBent F500 preparation – DuoBent
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DuoBent F500

DuoBent is an eco-innovation on a European scale. This product is to be used in the optimization of wastewater both municipal and industrial treatment processes,. Products are manufactured in accordance with a patented technology that ensures their safety.

Cząsteczka preparatu glinokrzemianów DuoBent - do zostosowań dla oczyszczalni ścieków


The problem with sedimentation of activated sludge in secondary settling tanks can occur only periodically or throughout the year. The cause may be, for example, overloading with a load of pollutants, sticky swelling associated with the mass appearance of mucous bacteria, or filamentous swelling caused by excessive growth of filamentous bacteria. Commonly used coagulants are not always sufficient to improve sedimentation, therefore, when it is necessary to immediately improve sludge settling, a natural group of DuoBent aluminosilicate mixtures comes in.

DuoBent F500 is dedicated to treatment plants over 100,000 P.E., struggling with the problems of activated sludge sedimentation, the inflow of surfactants, which significantly contribute to the formation of foam on the surface of biological chambers. In recent years, a change in the characteristics of domestic sewage has been observed, including larger inflows of sewage rich in surfactants, especially non-ionic ones, which are more difficult to biodegrade in treatment processes. This group includes the most popular and at the same time the most aggressive SPC compounds, such as SLES, SDS or LAS.

These types of sewage treatment plants, as recipients of sewage for large agglomerations, have a larger inflow of pollutants, including those from various industries. Occurrence of periodic problems with sedimentation of activated sludge may occur for several operational reasons, such as, for example, overloading with a load of pollutants, increased temporary inflow of sewage or rainwater (hydraulic overloading), receiving sewage of the so-called campaign costs, capacity limitations of the treatment plant or modernization works currently in progress.

Experiences from wastewater treatment plants show that DuoBent F500 may also prove to be an effective tool for facilities receiving wastewater in tourist destinations, which receive large loads of pollutants in a relatively short time or periodically throughout the year. Often, biological systems designed for a particular capacity only for the surrounding towns are not adapted to receive increased inflows, even temporarily.

DuoBent BX10 opakowanie

The main advantages of DuoBent F500

  • immediate improvement of activated sludge sedimentation
  • solves the problem of sludge drift in the secondary settling tank
  • reduction of floating suspension in the treated wastewater, which sometimes causes exceeding the parameters
  • extremely low doses
  • no need to dosing every day – thanks to the attachment of submicron DuoBent particles to the sludge, the product stays in the biological system = long-term effect
  • possibility of application to aerobic stabilization/gravitational/mechanical thickeners to improve sludge dewatering – increase in dry mass by up to 6% while reducing polymer consumption

Sludge dewatering

The low efficiency of sludge dewatering and the ever-increasing costs of sludge disposal can be a significant problem for the budget of the sewage treatment plant. Using a number of physicochemical mechanisms and a huge surface of submicron particles of DuoBent, we are able to obtain:

  • increase in dry mass by up to 6%,
  • highly possible reduction of polymer consumption
  • the possibility of releasing additional amounts of water trapped inside the structure of the sludge floc.

Through DuoBent dosing, the operators of the treatment plant are able to maintain a constant and appropriate sludge stabilization throughout the year, regardless of the current sludge sedimentation or biocenosis activity.

The main advantages of DuoBent dosing for sludge dewatering:

  • • possibility of hydraulic volume increase in stabilization and compaction tanks,
  • • low product consumption,
  • • no need to build additional installations,
  • • a simple way to reduce the consumption of polymers and lower costs of dewatered sludge disposal.

Other products from the DuoBent family

DuoBent BX10

  • Over 90% reduction of fat
  • Foam and scum reduction
  • Ideal solution for small to medium sized SBR tanks struggling with foam/fat/no sedimentation properties
  • Dedicated to simultaneous operation with aluminum ions in order to quick reduction of the number of filamentous bacteria
  • Dedicated to prevent further reproduction of filamentous bacteria
DuoBent BX500

  • Alternative to DuoBent BX10
  • Reduction of foam and fat scum
  • Solution for medium to large plants struggling with foam/fat/no sedimentation
  • Dedicated to work simultaneously with aluminum ions to quickly reduce the number of filamentous bacteria
  • Dedicated to prevent further reproduction of filamentous bacteria
DuoBent BX220

  • Immediate improvement in sedimentation in the presence of filamentous bacteria 021N
  • The potential for complete elimination of bacteria 021N
  • Reduction of fat substances and sulfides
  • The possibility of reducing the load in raw wastewater
DuoBent S-block

  • Extremely low doses
  • Enables the reduction or complete elimination of unpleasant odors
  • Reduces the concentration of hydrogen sulfide and ammonia
DuoBent F2

  • An alternative to DuoBent F500
  • Immediate action
  • Can be used in the primary settling stage
  • Improves the parameters of the treated wastewater