Product at a glance

  • Powder designed for improving the start-up of activated sludge systems through Bacillus bioaugmentation.
  • For use in organic rich effluents (protein, carbohydrates, fats oils and grease) such as municipal effluents or industrial effluents from bakery, dairy, slaughterhouse, paper and pulp mill activities etc.
  • Enriched with the fungus Trichoderma to boost cellulose and plant fibre degradation via the production of cellulase and other related enzymes.
  • Non-pathogenic, environmentally responsible and easy to use.
  • Robust heterotrophic growth parameters allow for growth across a range of conditions conferring resilience against system shocks.
  • Can be used to improve plant performance when dealing with cellulosic rich effluents such as those generated from paper and pulping activities or vegetable processing.
  • Manufactured in accordance with recognised international standard ISO 9001 to guarantee quality, integrity and reproducibility.
  • Stable spore formulations offer long term product stability.
+44 (0)29 2079 1185

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


Municipal wastewater

Industrial wastewater

Trade effluents

Organic rich effluents

Cellulosic rich effluents

Shock recovery

Start up of activated sludge systems

The technology

Evogen General Effluent Starter has been specially formulated to boost the start-up phase of activated sludge systems. The unique combination of our organic carrier with both Bacillus and fungal microorganisms forms an effective means for generating biomass to start a system either from a result of failure or from installation.

How it works

The product utilises a specially designed organic carrier to trigger biofilm formation within the Bacillus. This helps the microbes retain themselves within a system by sticking to the carrier’s surface and using it as base for floc formation. Through a similar mechanism, the fungal hyphae present within the product can be incorporated into the growing floc structure helping to provide a filamentous backbone for floc development. Typically, this biomass develops at a good rate as a compact structure with a Sludge Volume Index (SVI) of under 100, that is capable of sustaining a range of protozoan species.

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 organic loading rates typical in industrial effluents and lower strength municipal wastewaters, Evogen General Effluent Starter gives the operator a versatile technology for a multitude of scenarios. From treating system shocks to improving system start-up, the heterotrophic growth parameters of the Bacillus consortium are well suited for wastewater treatment across a range of effluent types.

Consortia capable of potent hydrolytic action have been specially selected through enzyme profiling both in the laboratory and via genetic investigations.

The diverse range of proteases, lipases, glycosidases and nucleases produced by the Bacillus strains combine to help degrade a diverse range of polymeric materials. The by-products of which can be metabolised further into biomass, CO2 and water.

The addition of the fungus Trichoderma within the product is designed to boost cellulose and plant fibre degradation via the production of cellulase and other related enzymes. This makes the product capable of tackling a broader range of effluent types including municipal, paper and pulp and effluents from vegetable and fruit processing.

Directions for use

Evogen General Effluent Starter is supplied in 20kg pack sizes and water-soluble sachets on request.

We recommend Evogen General Effluent Starter to be dosed directly to the beginning of the aeration basin at a biomass concentration of 200g per cubic meter delivered as a slug dose with regular maintenance doses based upon solids loss if required. Over the first 3 days post dosing, expect biomass to increase in quality and bolster the growth of the native microbial population.

The product can be used with strategies employing seeding with activated sludge from other plants to boost start-up time.


Evogen General Effluent Starter is recommended for use in systems dealing with organic rich wastewaters that contain materials such as proteins, carbohydrates and fats oils and grease such as municipal plants, bakeries, paper and pulp mills, dairies and slaughterhouses.


The product will perform poorly in highly alkaline (>pH 9) and highly acidic (<pH 4) effluents and will also lose activity at low (<15 ̊C) and high (>40 ̊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

Bacillus 1E+10 CFU/g
Fungal count 1E+6 CFU/g

Expect SVI below 100 when used with carrier

Tan coloured

Neutral / mild / earthy

Free flowing powder

Shelf life
24 months (unopened). If opened store in a cool dry place to maintain product integrity

Environmental conditions

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

pH 5 – pH 8.5

10 ̊C – 40 ̊C

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


Cell cytotoxicity assays and genomic screens for toxin production confirm that all Bacillus species and strains within the product are safe to use, should 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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