A game changing shift is underway in wastewater treatment as the industry heads toward ~3% of global electricity consumption and contributes ~1.6% of greenhouse gas emissions.
The annual carbon dioxide output by the UK water industry alone was reported at 5.1 million tonnes (2008/2009). Biogenic output of carbon dioxide for the sector was calculated to be about 2 million tonnes. The strategies available to the water industry for reducing carbon footprint are increased use of renewable energy, principally anaerobic digestion, using less power and methods for reducing carbon dioxide emissions.
Bioconversion and biofixation using algae is the most promising method for utilising carbon dioxide.
Since our ground breaking project with Severn Trent PLC in 1993 when we deployed the UK's first algae based wastewater remediation process, we have been working hard to improve the process that is now capable of simultaneous CO2 capture and utilization. We believe that by employing our technology, wastewater treatment may entirely offset the industry’s greenhouse gas footprint and make it a globally significant contributor of negative carbon emissions.
We are currently piloting the process at an EU sewage treatment plant in conjunction with a leading university. Our unique algae based process is capable of undertaking combined:
Secondary treatment (BOD & COD removal)
Tertiary treatment (Nutrients N & P and heavy metal removal)
Quaternary treatment (Hormone, endochrine disruptor, antibiotic & microplastic removal)
.....in a single stage!
Our goal is to achieve an overall hydraulic retention time of between 12 & 24hrs.
Economies of scale are the underlying tenets of Greenskill photobioreactors, with a minimum volume of 500 litres ranging to beyond 100,000 litres per module.