Material flow analysis in an integrated catfish farming system in Mekong Delta, Vietnam: A case study
- Resource Type
- Authors
- Nguyen Phuong Thao; Tran Thi Hieu; Ngoc-Kim-Qui Nguyen; Xuan-Thanh Bui; Tra Van Tung; Le Quoc Vi; Tran Trung Kien; Nguyen Hong Anh Thu; Le Thanh Hai; Nguyen Viet Thang
- Source
- Case Studies in Chemical and Environmental Engineering, Vol 4, Iss, Pp 100154-(2021)
- Subject
- Compost
General Chemical Engineering
Material flow analysis
Environmental engineering
Biomass
Environmental pollution
Catfish
Environmental Science (miscellaneous)
engineering.material
TA170-171
Chemical engineering
Wastewater
Aquaculture of catfish
engineering
Environmental Chemistry
Environmental science
Intergrated aquaculrure system
TP155-156
Material flow accounting
Engineering (miscellaneous)
Organic fertilizer
- Language
- English
- ISSN
- 2666-0164
Wastewater and catfish pond sediment of catfish breeding in Mekong Delta Vietnam directly discharge into rivers or canals that is a cause of environmental problems. To solve this problem, the integrated catfish breeding was applied to reuse wastes from catfish pond as raw materials for other purposes. The method of material flow accounting (MFA) is used to assess the materials and wastes fluxes. The results show that wastewater form catfish pond can reuse for water morning glory and maize as water supply. Catfish pond sediment could make composting to supply for maize as organic fertilizer. Discharging wastewater into receiving canal was 74.1%, the rest is evaporated into the air (21.17%) and accumulated in the compost and biomass of cultivation plants (4.73%). The organic matters accumulated in cultivation plants and soil are 1.95% and 9.6% respectively, and the remaining amount is accumulated in the compost. Scaling up for 9 households have been assessed. The present research suggests that the integrated catfish system can reduce the discharging wastes into environment and prevents environmental pollution.