Product at a glance

  • Slow release technology of floc forming Bacillus with strong heterotrophic growth properties.
  • Ideal for organic rich effluents such as municipal, dairy and slaughterhouse effluents.
  • Diverse hydrolytic enzyme profiles give wide substrate specificity for the degradation of both animal and plant products.
  • The presence of secondary metabolite clusters encoding for biosurfactants allows Bacillus to degrade FOG completely.
  • Bacillus are able to retain themselves within the system via formation of flocs with excellent settling properties.
  • Non-pathogenic, environmentally responsible and easy to use.
  • Wide temperature and pH profiles and tolerance of organic strength variations enables growth in variable conditions.
  • Manufactured in accordance with recognised international standard ISO 9001 to guarantee quality, integrity and reproducibility.
  • Stable spore formulations offer long term product stability.
  • Can be used in a wide range of water types including; fresh, saline and brackish.
+44 (0)29 2079 1185

Unit P1, Capital Business Park,
Capital Point, Parkway,
Cardiff CF3 2PU UK


Municipal and industrial wastewater plants

Lift stations and wet wells

Ponds, lagoons and other large body systems

Suited to effluents rich in organic materials

Tackling FOG related filamentous issues such as Nocardia or Microthrix bulking and foaming

The technology

Evogen Bioblocks have been specially formulated to be used as controlled release technology in wastewater treatment systems to boost performance, by improving effluent, odour and sludge parameters. Bacillus capable of floc formation are slowly released into a system to help tackle problems associated with organic compounds such as FOG and excess BOD/COD.

How it works

As the block is exposed to effluent, the bacteria within the structure are conditioned to the effluent characteristics and when released they have no need for a prolonged acclimation phase. This allows the Bacillus microbes to immediately begin augmenting the system by delivering their metabolic activity to digest materials such as FOG, proteins, DNA, plant materials and various other polymeric substances.

Rather than using a carrier to induce floc formation, the Bacillus within the product have been selected due to their unique ability to form flocs on their own. These flocs, which typically have a Sludge Volume Index (SVI) of <100, are well suited for the activated sludge system offering compact structures with excellent settling properties.

The use of several Bacillus species which grow synergistically provide a consortium that are not only metabolically diverse but capable of performing over a range of temperature and pH ranges. With good growth rates under both high strength industrial type effluents and lower strength municipal wastewaters, Evogen Bioblocks give the operator a versatile technology to tackle a multitude of scenarios at both large and small treatment works.

Through investigations into the genomic profiles of our Bacillus we are able to tailor both extracellular enzymes and secondary metabolite profiles to provide a product with robust metabolic capabilities.

For example; through the secretion of several different biosurfactants (which are far more powerful than chemical equivalents) our Bacillus are able to effectively tackle FOG build up and provide a boost in COD turnover in systems such as those treating effluents from dairies and slaughterhouses. Furthermore, through diversifying the extracellular enzyme capability, the product is robust enough to tackle both animal and plant-based materials in effluents, offering a much greater ability for the complete degradation of organic materials.

Directions for use

Evogen Bioblocks are supplied in 5kg and 15kg block sizes.

These can be placed in to wet wells (lift stations, manholes) or directly into effluent streams. For dosing instructions please contact technical support with details of your flows and loads.


Evogen Bioblocks should be used in systems dealing with organic rich wastewaters that contain materials such as proteins, carbohydrates and fats oils and grease such as municipal plants, bakeries, breweries, dairies and slaughterhouses.


The product will perform poorly in highly alkaline (>pH 10) and highly acidic (<pH 3) effluents and will also lose activity at low (<10 ̊C) and high (>45 ̊C) temperatures. Effluent types rich in phenolic and hydrocarbon species such as those from wineries, olive mills or heavy industry are not suitable for this product. For specialised effluent types contact our technical department for alternative solutions and more information.

Product specification

5E+9 CFU/g Bacillus

Expect SVI around or below 100 under optimal conditions

Blue solid

Mild surfactant odour

Shelf life
24 months

Environmental conditions

Freshwater to seawater (no impact upon performance between 0 - 50 g/L)

pH 4 – to pH 10

10 ̊C – 45 ̊C

Effluent type
Organic rich (Protein, FOG, carbohydrates containing effluents such as municipal, dairy, slaughterhouse etc.)


Via both cell cytotoxicity assays and genomic screens for toxin production, we can confirm that all Bacillus species and strains within the product are safe to use, harbour no toxicity towards humans or animals and do not have a negative impact upon the environment.

From analysing the DNA of our strains we can confirm a lack of mobile genetic elements, which strongly indicates a low potential for transmission of antimicrobial resistance (AMR) genes.

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