Det praktiske forsøket på Sunndalsøra var planlagt i 2022. Forsøket vil pågå til januar 2023. Et 60-dagers atlantisk lakseforsøk med 6 individuelle RAS-enhetstanker med 2 forskjellige nivåer av forurensning for å produsere off-flavor produksjon. KTH sendte belagte bakteriesedimentasjonsplater som ble installert i testtankene. Alborg og Aarhus Universitet hadde gitt råd om planlegging og gjennomføring av forsøket.
Stockholm Water Technology besøkte Sundnalsøra i tre dager før forsøket. Dette ble gjort for å teste og lære CDI-enheten.
På grunn av noen problemer med anleggsbestillinger på Sunndalsøra ble rettssaken utsatt til slutten av året.
I sommer var det prosjektmøte i Stockholm på KTH Kungliga Tekniska Högskolan.
En student "Ahinav Singh Parmar" fra "Norges miljø- og biovitenskapelige universitet, (NMBU) skriver sin masteroppgave i den eksperimentelle delen av prosjektet.
Med unntak av en liten forsinkelse kjører alle planlagte oppgaver som planlagt.
-
Fin fish aquaculture is currently experiencing significant pressure to improve its environmental sustainability to allow
it to continue its rapid growth. As a result of these pressures, the industry is increasingly adopting land-based
recirculating aquaculture systems (RAS), where water usage is minimised and the risks of release of inbred strains
with associated diseases into wild populations is eliminated as are the associated nutrients that cause local
environmental problems. Perhaps the biggest barrier to this industry migration to RAS, is the development of off-taste
in these systems caused by the accumulation of geosmin and other chemicals to which the human palate is
particularly sensitive. These chemicals are produced by microbial communities in biofilms and in the water column.
The current solution to this off-taste development is to purge fasting fish for up to 14 days in clean water with
associated significant weight and value loss. Traditional antimicrobial techniques to combat the off-taste
micro-organisms are unavailable in RAS due to their negative impact on biofilters as well as their toxic effects on the
growing fish. This consortium consists of a strong combination of University, RTD and Industrial partners from
Denmark, Sweden and Norway with expertise in RAS systems, biofilm development and microbial off-flavour
chemical production, as well as nanomaterials and water quality control. The CDI-NANO-RAS project aims at testing
novel technologies for the control of off chemicals in RAS as well as purging systems. We hypothesise that the
combined use of novel capacitive deionization (CDI) technology and photocatalytic nanotechnological surface
coatings can provide an energetically efficient method for the control of off-taste development in RAS as well as in
reducing the duration and water usage in pre-harvest purging. The overall aim is to develop cost effective solutions
applicable for the modern RAS industry.