“What makes the method so exciting is
that approx. 75% of the organic waste is
turned directly into methane gas, which
can be directly utilized as an energy
source, says Ilya Savva CEO of Biowater
Technology in Tønsberg. “The combination
of methane production and aerated
biofilm in a single reactor is unique to the
Biowater Technology process and offers
odourless treatment at highest removal
efficiency.”
An important feature of the process is
that the effluent contains few particles,
and therefore the system generates
virtually no sludge. A historical issue for
factories is the strict requirements for
handling sludge, which is often associated
with huge costs to get rid of.
“That we have exchanged sludge with
gas therefore gives double gains. The
plant provides combustible methane and,
in total, a positive energy contribution.
Using the gas for heating is the next goal
for us” Leiros emphasizes.
“We had a goal of a reduction of 86% total The project has cost approx. £1.3 million
COD, so it’s been a real bonus to have (British pounds) to build and has received
achieved so much better results. support from Enova, a public organisation
It has also given us more biogas than
expected as well cleaner effluent water,
“points out Savva.
Processing fruit and vegetables requires
a lot of water. The fact that the treated
water is of good quality allows now for
further gains through water recycling
with membrane technology.
On the energy consumption side the
results have also been impressive. Since
the plant requires far less supply of
air than other treatment systems, and
has fewer mechanical components, it
During a recent week of sampling, the
results showed that the plant gave a
reduction of 90.4% of the total chemical
oxygen demand (COD) in the wastewater.
consumes less energy, approx.
1 kWh per cubic meter of treated water.
The gas production in the plant is stable
and approx. 0.4 cubic meters of methane
At the same time, the reduction of
per kg reduced COD.
dissolved substances was 91.2%.
Wastewater contains, as previous In summary, the process contributes to
analyzes indicated approx. 250-850 total a net positive contribution in the energy
COD kg / day. accounts.
in Norway which supports projects to
develop future energy systems and
reduce greenhouse gases.
According to Biowater Technology , the
process, which has been named HyVAB*,
(Hybrid Vertical Anaerobic Biofilm), is
specifically tailored to wastewater from
the food industry, pharmaceuticals and
municipal plants. HyVAB holds EU patent
number is 2254842 and in Great Britain
2456836.
The benefit, including treated water
quality and the amount of gas you can
count on will depend on the composition
of the wastewater, but can be simply
assessed by their expert team.
For Wastewater Treatment enquiries
Biowater Technology AS
[email protected]
Biowater Technology AS are a turnkey supplier of biological
wastewater treatment systems to the Food and Beverage Industry.
• Advanced biofilm technology (CMFF ® / CFIC ® / CFAS ® )
• Turnkey project delivery
• R&D, pilot testing and project development
• Anaerobic treatment and biogas handling (HyVAB ® or traditional)
• Biomedia and containerised solutions
Smaken av Grimstad HyVAB®
Tel: +47 911 10 600 • E-mail: [email protected] • www.biowatertechnology.com
FDPP - www.fdpp.co.uk 47