BIOMONTAN - Kreideprodukte zur Optimierung industrieller und kommunaler Kläranlagen / chalk products to optimize industrial and municipal wastewater treatment facilities © BIOMONTAN GmbH

CHALK FOR OPTIMIZATION OF INDUSTRIAL AND MUNICIPAL WASTEWATER TREATMENT PLANTS

CHALK to optimize floc formation, nitrification, acid capacity and sludge conditioning

The use of chalk products is ideal for systems with

poor settling properties
 insufficient floc formation / floc decay
 turbidity in the effluent
 low acid capacity
 problems with filamentous bacteria
 low Ca/Na ratio due to industrial wastewater
 disturbed Ca/Na ratio (municipal wastewater treatment plants especially during winter months)

With the addition of chalk products, the system can be balanced and the process performance can be sustainably optimized.

Practical case studies

CONVINCING ADVANTAGES WITH CHALK

Chalk provides the calcium important for flocculation, which is directly available to the floc-forming bacteria due to the incorporation of the chalk particles into the flocs.
In combination with iron, chalk forms a stable floc framework, that improves the strength of the flocs.

The chalk particles embedded in the flocs stabilize the pH value, which causes nitrifiers to intensively attach to the chalk particles in the flocs.
The close association of ammonium-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) has a positive effect on nitrification.

The acid activity rises with the Ca-content the activated sludge and so does the stability against to pH changes.

Filamentous bacteria are increasingly incorporated into the compact flocs. As a result, the filamentous bacteria lose their negative effect on settling behaviour, but retain their good degradation performance.

Chalk stabilizes the flocs © BIOMONTAN GmbH
Chalk stabilizes the flocs © BIOMONTAN GmbH

CONVINCING ADVANTAGES WITH CHALK

  • Extensive system analyses of the plant
  • Water analysis
  • Microscopial examination of activated sludge
  • Selection of the optimal chalk product for your application
  • Recommendation of the dosing quantity/dosing point
  • Dosing system for operational test
  • Supervision by our application specialists
  • Regular analyses of water and activated sludge
  • Adjustment of the chalk dosage, if necessary
  • Special analyses possible:
    • Gen probe analysis and nitrifiers
    • Activity tests
    • Nitrification performance
BIOMONTAN_Analytisches Labor - Mikrobiologie-Expertin am Mikroskop © Biomontan GmbH

CONVINCING ADVANTAGES WITH CHALK

Chalk products are dosed:

 dry as powder
 from the BigBag or from a storage silo
 directly into the activated sludge or the return sludge
 intermittent dosing is also possible (eg.g. once a day, twice a week etc.)

Chalk

does not cause clumping
is not classified as dangerous good
is an all-natural product
cannot be overdosed

Our chalk range includes products with different grain sizes for precise adjustment to your requirements.

Dosierung von Kreide direkt aus dem BigBag / Dosage of chalk out of the BigBag © BIOMONTAN GmbH
BIOMONTAN - Kreideprodukte zur Optimierung industrieller und kommunaler Kläranlagen / chalk products to optimize industrial and municipal wastewater treatment facilities © BIOMONTAN GmbH
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