Super Trident sewage treatment plant.

Super Trident sewage treatment plant system for marine wastewater treatment applications.

Proven sewage treatment for marine and offshore vessels.

Super Trident sewage treatment plants (STPs) from Hamworthy are considered to be the most cost-effective and safe answer within the marine industry for processing wastewater at sea. No tempering with our oceanss quality, fully compliant with IMO MEPC 227(64) guidelines. These guidelines have been in place for new-build ships since 1 January 2016.


Each Super Trident sewage treatment unit is optimised for processing all black and grey wastewater streams on board of ships and offshore platforms. The plants are compatible with both conventional gravity and vacuum fed collection systems. Each STP is fully automatic, allowing for unattended operation. On-board maintenance requirements are reduced and long-term operating costs are significantly lowered.


Hamworthy sewage treatment plants are compact and modular in design, suitable for between-deck installations and adaptable to customer new-build specifications.

Why operators choose Super Trident STPs:

Cost-effective, environmental friendly & safe answer for every ship to dispose of waste water at sea.
Proven effluent quality: clean and safe effluent, suitable for discharging overboard.
Low operational costs with minimal maintenance & spare parts required and minimal human intervention during operation.
Simple & robust construction.
Compatible with gravity & vacuum collection systems.
Collecting tank integral part of STP.

Built for reliable onboard operation:

IMO 227(64) & MED certified.
Single power supply input point.
Solids handling centrifugal discharge pump.
Chemical disinfection and de-chlorination.
Automatic control.
Compact design.

Super Trident system range:

STC-13 line — smaller capacities:
System
STC-01-13
STC-02-13
STC-03-13
STC-04-13
STC-06-13
IMO certified (litres/day)
1740
3120
4660
6010
9360
Dimensions (LxWxH in mm)
1890
2518
2622
2722
3072
1400
1863
1863
2080
2280
1181
1336
1681
1821
1971
Weight full (kg)
1550
3030
3959
5027
7367
STC-14 line — larger capacities:
System
STC-08-14
STC-10-14
STC-13-14
STC-15-14
STC-20-14
STC-25-14
STC-30-14
STC-40-14
STC-50-14
STC-60-14
IMO certified (litres/day)
11840
15810
20830
25704
33974
40778
47422
64150
80182
100800
Dimensions (LxWxH in mm)
3000
3400
4400
3700
4620
4620
5012
6012
7000
7000
2670
2750
2750
3215
3215
3490
3470
3915
4145
4180
2000
2000
2000
2300
2300
2500
2700
2680
2900
3500
Weight full (kg)
9294
11314
15036
17836
22422
27446
30898
43614
55526
69754

Scope of supply:

What’s included as standard:
Main tank.
Air compressor.
Discharge pump.
Electrical control panel.
Chlorination & dechlorination systems.
Optional configurations:
Fitted vacuum sewage collection equipment.
Conditioning water flow meter.
Standby compressor (mounted).
Standby discharge pump (mounted).
Maceration.
Separate sewage feed system.
Retrofit options available to aid installation.

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