Oman pilots reuse of water from fish factories
Wastewater from fish processing plants can be a rich source of water for irrigation and other purposes, an expert has said
Wastewater from fish processing plants can be a rich source of water for irrigation and other purposes, an expert has said.
Dr Mahad Said Baawain, associate professor at the department of civil and architectural engineering, College of Engineering, Sultan Qaboos University, said, “Water consumption in fish processing factories is relatively very high and this water can be particularly useful for a semiarid country like Oman.”
A pilot project in this regard was carried out by SQU in cooperation with a fish factory, said Dr Baawain who supervised the project. “Our pilot project has shown that wastewater from fish processing plants has great potential. After treatment, the water can be used for growing plants and even in aquaculture projects,” he said.
The volume and concentration of wastewater from fish factories may vary depending on the composition of raw fish and additives used. “It can range between five and 15 m3 per metric tonnes of raw fish (depending on the type of fish and processing method). Wastewater is generated in a factory when fish is thawed, washed or eviscerated,” said Dr Baawain. This wastewater is a great boost for aquaponics too.
“In the aquaponic system, we grow fish and plants together in an integrated system. Fish waste is a source of organic food for plants which in turn provide natural filter for the water the fish live in.” He said that treated wastewater till now has been used for landscaping purpose in the country only. “With the implementation of this project, this wastewaster will now be used for a host of other purposes.”