Optimization of Wastes Treatment with Reference to Biogas and Protein Recovery

摘要

Detailed technological and economic evaluation of the presently used treatment processes for the dilute wastewaters from hog farms, with capacity exceeding 10 thousand heads, is presented. The research part of the project was aimed at optimization of the unit process and whole treatment trains selection, rather than unit process operational parameters. The economic analysis has proved that the application of these new treatment trains can make industrial scale farming more profitable with the increase of the size of the farm. The technology proposed in the project will show increase of the economic efficiency, when compared to conventional systems, with the increase of power costs, due to biogas recovery and incorporation of sludge treatment subsystem in the overall treatment-recovery train. Although the report is confined to swine wastes, the results are applicable to other concentrated effluents from agricultural industry.