Nutrients Valorisation via Duckweed-based Wastewater Treatment and Aquaculture
Book Details
Format
Paperback / Softback
ISBN-10
9058096564
ISBN-13
9789058096562
Publisher
A A Balkema Publishers
Imprint
A A Balkema Publishers
Country of Manufacture
NL
Country of Publication
GB
Publication Date
Jan 1st, 2003
Print length
184 Pages
Weight
363 grams
Product Classification:
Sewage treatment & disposal
Ksh 8,100.00
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Development of a sustainable wastewater treatment scheme to recycle sewage nutrients and water in tilapia aquaculture was the main objective of this PhD research. Use of an integrated UASB-duckweed ponds system for domestic wastewater treatment linked to tilapia aquaculture was investigated.
Development of a sustainable wastewater treatment scheme to recycle sewage nutrients and water in tilapia aquaculture was the main objective of this PhD research. Use of an integrated UASB-duckweed ponds system for domestic wastewater treatment linked to tilapia aquaculture was investigated. The treatment system was efficient in organic matter removal during the entire year, while nitrogen, phosphorus and faecal coliform removal were negatively affected by the dicline in temperature in winter. Most of the nitrogen removal was achieved by plant uptake (81%) while 14.5% and 4.5% of the removal was due to denitrification and sedimentation, respectively. The treatment system provided effluent quality and duckweed biomass suitable for reuse in tilapia aquaculture. The nutritional value of fresh duckweed was significantly better than for wheat bran and similar to the commercial feed when used in combination with treated sewage from the duckweed ponds.
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