December 31, 2010

Taiwan works at eco-friendly pig farming

The Taiwanese Environmental Protection Administration (EPA) has actively developed new eco-friendly pig farming, which not only reduces stench and wastewater, but also raises pig survival rate.

The concept of "clean pig farming and renewable green energy" mainly uses the technical process of production, collection and reuse to achieve the goal of saving water, reducing pollution and resource recycling.

"Production" means installing toilets to concentrate pig excrement, thus reducing the use of water to clean pig houses and keeping pig houses dry; "collection" means using automatic or semi-automatic facilities to collect solid pig manures for recycling to become useful resources or energy reuse; and there are now techniques of "reusing" pig manures to produce compost and biofuel.

Based on the experience of Shandong Ranch in Yunlin county, installing pig toilets can reduce the use of water by 50% and improve the water quality of nearby rivers through removing pollution sources. Moreover, pig manures can easily produce four kinds of stench (NH3, CO2, H2S, CH4) and collecting pig manures at the source can significantly decrease both the possibility of producing stench and complaints about air pollution or stench from pig farms.