The discharge of raw sewage into the sea can create a health hazard. Sewage can also lead to oxygen depletion and can be an obvious visual pollution in coastal areas – a major problem for countries with tourist industries.
The main sources of human-produced sewage are land-based, such as municipal sewers or treatment plants. However, the discharge of sewage into the sea from ships also contributes to marine pollution.
Therefore, the regulations in Annex IV of MARPOL prohibit the discharge of sewage into the sea within a specified distance of the nearest land, unless the ships have in operation an approved sewage treatment system.
Our Sewage treatment systems are designed for the treatment and removal of bacterial pollution through an oxidation/reduction process and to drastically reduce TSS, BOD5, COD, turbidity and the organic and physical pollutants in wastewater produced on the boat, thanks to a fine purification system.
The BLUE SEA system is a new generation wastewater purifier capable of treating from 2500 to 22000 litres a day.
The Blue Sea system is equipped to purify, macerate and sterilise all in accordance with the enforced norms regarding the discharge of wastewater into the sea.
In fact, a BLUE SEA marine wastewater treatment plant guarantees the elimination of bacterial pollution through an oxidation/reduction process and, most of all, drastically reduces TSS, BOD5, COD, turbidity and the organic and physical pollutants in wastewater produced on a boat, thanks to the fine purification system.
Selmar BLUE SEA treated wastewater complies with the international regulation of “Marpol” environmental rules.
Selmar’s purification system is based on an advanced oxidation-reduction process, as well as being equipped with two units of UV sterilisation (primary and secondary), an air blower, oxygenation unit, flotation system, “cleaning/sanitation” unit and the advanced maceration/comminution stage. All of these stages and units together complete the marine sewage treatment plant and make it unique in its kind.
The “Advanced Oxidation Process (AOP)” uses a combined action of ozone, OH free radicals, ultraviolet rays and hydrogen peroxide, making it incredibly effective for black and grey wastewater treatment.
Models & Characteristics
| Model | Litres/day | Litres of wastewater treated per cycle | Time to the process | Nominal AC power consumption | Dimensions (LxHxD) mm | Weight |
|---|---|---|---|---|---|---|
| BLUE SEA 2500 | 2500 | 26 | 15 min. | 1,2 kW | 620 x 730 x 715 | 80 kg |
| BLUE SEA 3500 | 3500 | 38 | 15 min. | 1,5 kW | 620 x 930 x 740 | 100 kg |
| BLUE SEA 4000 | 4000 | 45 | 16 min. | 1,5 kW | 620 x 1130 x 740 | 115 kg |
| BLUE SEA 7000 | 7000 | 95 | 20 min. | 1,5 kW | 670 x 900 x 1025 | 128 kg |
| BLUE SEA 12000 | 12000 | 138 | 18 min. | 1,5 kW | 990 x 900 x 900 | 132 kg |
| BLUE SEA 22000 | 22000 | 400 | 25 min. | 1,5 kW | 980x1750x1250 | 205 kg |
Hydraulics: System Characteristics
| Input/output terminals for model 22000: | |
| Influent: black and grey water | 1.1/4” |
| Sea water inlet | 1.1/4” |
| Discharge Effluent | 1.1/2” |
| Overflow | 1.1/4” |
| Air Vent | 1.1/4” |
| Air inlet | 3/4” |
| In/out primary U.V. | 1.1/4” |
| Input/output terminals for models 2500, 3500, 4000, 7000 and 12000: | |
| Influent: black and grey water | 1.1/2” |
| Sea water inlet | 1.1/2” |
| Discharge Effluent | 2” |
| Overflow | 1.1/2” |
| Air Vent | 1.1/2” |
| Air inlet | 3/4” |
| In/out primary U.V. | 1.1/4” |
Standard Features
Accessories and Extras