Cruise retrofit for cost-effective water treatment
ACO Marine has been awarded contracts to supply its advanced wastewater treatment technology as retrofit solutions to river cruise vessels operating on European waterways.
The 232-passenger capacity sister vessels Ukraina and Moldavia, undergoing refit work at the Ukrainian Danube Shipping Company’s fleet maintenance base in Izmail, Ukraine, will each be retrofitted with a Maripur NF 250 unit.
“Usually the main biochemical purification process occurs in the 1st stage activation chamber of the Maripur NF unit, but by converting the vessels’ existing tanks – provided they are of sufficient size – we can create an environment in which bacteria can thrive,” said Mark Beavis, managing director, ACO Marine.
In a separate agreement, a Maripur NF 150 unit will also be supplied to Linz Shipyard for retrofit to the 150-passenger capacity river cruise vessel Carissima.
Due to space limitations aboard all these vessels, ACO Marine will use the ships’ existing holding tanks as a bioreactor in the first stage of the treatment process.
The tanks will be aerated and additional pumps installed to direct the partially treated effluent to the membrane stage of the treatment process in the Maripur NF units.
By using the vessels’ existing tanks, ACO Marine said it can reduce system footprint considerably, while making for a more cost-effective wastewater treatment installation for the operator.
Mr Beavis said that using a vessel’s existing tanks as a first stage bioreactor can allow for greater colonies of bacteria to more effectively “eat away at the waste”.
“Use of existing tanks in this way, can reduce system footprint by more than two-thirds, depending on the dimensions of tank, and reduce capital expenditure. However, additional tank venting would be required for safety reasons.”
The European riverboat sector is relatively new market for ACO Marine, with the Maripur NF Mark IV system passing EC Rhine Rules certification tests in 2012.
ACO Marine is now actively marketing its wastewater treatment technology in the river cruise segment with several contracts nearing the final stage of negotiations.
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