Our BIOCLENS™ technology uses bacteria encapsulated in lenses as a biocatalyst to enhance and accelerate natural biological processes which break down organic matter. The lenses contain living bacteria which is immobilised in a stable, porous PVA gel matrix. As these are stirred in a reactor, water and dissolved impurities diffuse through the lenses and come in contact with the bacteria, causing targeted reactions to occur.

BIOCLENS™ Interaction

Targeted Reactions

Ammonia Removal

Ammonium (NH4+) in the wastewater permeates into the lens​ to allow the ammonia oxidizing bacteria (AOB), embedded inside lens, convert the ammonium (NH4+) to nitrite (NO2)​.

NH4+ + 1.5 O2 → NO2+ 2H+ + H2O​

Then the nitrite oxidizing bacteria (NOB), also embedded in the lens, then convert nitrite (NO2) to nitrate (NO3).

NO2+ 0.5 O2 → NO3


Nitrate Removal

Nitrate (NO3) in the water permeates into the lens

Nitrate reducing bacteria embedded inside the lens convert the nitrate (NO3) to nitrite (NO2)

Nitrite (NO2) is then converted to nitrogen gas (N2)

Both reactions require a carbon source as an electron donor

2NO3+ 10e +12H+ → N2 + 6H2O



BIOCLENS™ provides the following advantages:

  1. Up to 16x more nitrification biomass and 3x more denitrification biomass than activated sludge
  2. Smaller site footprint than other biological treatment methods
  3. Ability to consistently reach extremely low <1ppm ammonia and nitrate levels
  4. Can treat water with very high concentrations of ammonia or nitrate
  5. Ability to handle fluctuations in influent concentrations, pH, and temperature with system stability
  6. Low energy demand and life-cycle costs
  7. Minimal organism loss and sludge production
  8. High surface area to volume ratio for higher diffusion rates than other bacteria encapsulation methods
  9. Protection from harsh water conditions, allowing treatment of saline water


Typical IndustriesBIOCLENS™ Can Remove
Municipal Reuse – Ammonia and nitrate polishing to allow reuse or discharge from water treatment plantsNutrients – typically used to remove ammonia or nitrates
Surface Water Treatment & Groundwater Treatment – removal of ammonia and nitrates for potable or industrial water useBiochemical Oxygen Demand (BOD)/Chemical Oxygen Demand (COD) – Removal extent dependent on the feed and required product water quality
Fisheries & Agriculture – nutrient removal to allow reuse or discharge of water
Mining Water – removal of nutrients for water reuse or discharge
Industrial Water – elimination of nutrients in contaminated water for reuse or discharge

Case Studies

1. Nitrate Polishing – WWTP in Europe

A business park in Europe fluctuated between 3000 and 6400 employees, with unequal loading and varying nitrate concentration in the wastewater. The effluent from the plant required discharge into a stream which had a strict environmental discharge limit for nitrates of 5ppm. BIOCLENS™ technology was used to produce an effluent that was consistently under the discharge limit.

Tank volume24 m³
Flowrate377 m³/d
Influent Nitrate Concentration33 mg/L
Effluent Nitrate Concentration5 mg/L
Nitrate in Influent0.5 kg/hr
Nitrate Removal Capacity0.4 kg/hr
Amount of denitrification biocatalyst1760 kg

2. Treatment of Groundwater for Ammonia

goundwater ammonia

A logistics park used Clean TeQ Water’s BIOCLENS™ technology to reduce the ammonia concentration in groundwater. The treatment target for ammonia was 1ppm, which was consistently achieved by the treatment plant.

Nitrification tank volume6 m³
Flowrate30 m³/d
Influent Ammonia Concentration12 mg/L
Effluent Ammonia Concentration˂ 1 mg/L
Ammonia removal capacity13.8 g/hr
Amount of BIOCLENS™275 kg
Water Temperature13 °C

3. Treatment of Industrial Water for Volatile Organic Compounds

voc removal

A 1.7 MLD BIOCLENS™ plant was installed at a solar panel producing plant in Europe. The plant operated under anoxic conditions to remove organic pollutants (ethanol, iso-propanol and other biodegradable chemicals) from industrial wastewater.

Tank volume70 m³
Flowrate1680 m³/d
COD/VOC concentration in influent50/25 mg/L
COD/VOC concentration in effluent6/3 mg/L
COD removal capacity3.1 kg/hr
Amount of biocatalyst5500 kg
Air aeration60 m³/hr

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