what is meant by sewage fed fish culture
Answers
Explanation:
Sewage-fed fish culture is a biological means of waste water treatment. This is the biological method of treating the waste water especially municipal sewages before its final disposal in river. It reduced the pollution load of river and in the aquatic ecosystems.
Answer:
Sewage-fed fish culture is a biological means of waste water treatment. The Kolkata model of wastewater aquaculture is described here. It has several advantages like
1. No manuring and supplementary feeding is required due to high content of nutrients in sewage.
2.Input cost is very low (only in fish seed) and production is very good.
3. This is the biological method of treating the waste water especially municipal sewages before its final disposal in river.
4. It reduced the pollution load of river and in the aquatic ecosystems.
5. It produces animal proteins i.e. fish at cheaper rate and contributes towards food security.
6. The bherries and ponds in which fishes are cultured act as water harvesting structures.
7. The process recharges the ground water and saves the big city from drying and collapse. The buildings, other establishments & structures above the surface layers of soil may collapse when the underground water column is dried and a vacuum is created below the soil layer.
8.It generates income and lakhs of families manage their livelihood from it.