Seawater Fish Farm Waste Water recycle
3E-NF20 HF membrane system aims to retain salt concentration while remove organics and ammonia
Singapore is the world's largest exporter of ornamental fish. Direct discharge of aquaculture wastewater will create adverse effect on the ecosystem. Singapore government is rolling out a plan to move all outdoor fish farms to indoor multi-storey fish farms. In order to achieve this goal, the government encourages the adoption of new technologies to reduce the cost of aquaculture wastewater reuse, which can reduce the water consumption and the cost of indoor fish farming.
Aquarium Iwarna Marine Ornamental Fish used 3E-NF20 to recycle its aquaculture wastewater. This project was supported by Enterprise Singapore, Ngee Ann Polytechnic and Singapore Fish Culture Association.
System Parameters:
- Feed: 38,000.0 ppm
- Flux: 0.4±0.5L/hour
- Salt rejection: 20.0±0.3%(2000ppm MgSO4)
- Operational pressure: 2.0 Bar
Benefits of using our membranes:
- Low pressure used in operation: 2 bar for our membrane compared to 10-100 bar for conventional RO
- Retention of salt concentration: our membrane does not remove salts from the seawater, whereas the conventional RO process used excessive high pressure to remove the salts during treatment. The filtered water needs to be topped up with salt before being used for aquaculture purpose
- Low requirement on feedwater pre-treatment: our membrane adopts a hollow fibre configuration that minimizes clogging happens in conventional RO process. It also allows for better cleaning strategy