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A Chinese Biogas Manual

A Chinese Biogas Manual
Ariane van Buren, Leo Pyle, Michael Crook
pdf - ebook, download. 136 pages.
Ebook download
From the original by the Office of the Leading Group for the Propagation of Marshgas, Sichuan (Szechuan) Province, Peoples’ Republic of China
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Since the 1950s China has experimented with the production of biogas from agricultural wastes, a practice based upon an age-old Chinese tradition of composting human, animal and plant wastes to produce an organic fertilizer of high quality. The breakthrough came in 1975 when a process was developed to ferment the materials in an airtight and watertight container in order to produce methane gas. This was then collected for use as fuel for motors, cooking and lighting.

This plan is a translation of a Chinese manual. With 136 pages and numerouse diagrams it provides an excellent resource for the construction of digesters and the utilisation of the gas broduced.

From the intriduction to the manual

This manual has been translated virtually verbatim from the Chinese. It conveys not just the substance but the tone of Chinese technical education for rural areas. A decisive feature of China’s technical education is that it encourages people to assimilate and modulate technology to their own needs - the result is that people develop themselves. One of China’s recent achievements has been the production of biogas from agricultural wastes. This practice is based upon an age-old Chinese tradition of cornposting human, animal and plant wastes to produce an organic fertilizer of high quality. However, by fermenting the materials in an airtight, watertight container, methane gas can be produced and collected for use as fuel for motors, cooking and lighting; and the liquid slurry can be returned to the land as fertilizer. Fur-thermore, digesting the wastes in a closed container kills many of the pathogens responsible for common rural diseases. What would be regarded in many countries as, at best, an efficient system of waste disposal has become in China a comprehensive, controlled method not only for improving rural health but for recycling resources and supplying energy as well.

Although the Chinese have been experimenting with biogas since the 1950s it was only in the 70s and mainly in Sichuan (Szechuan) that there was a movement to extend the practice and reproduce the equipment in a large way throughout the countryside. This manual is a result of that movement. It is a compilation of the experience gained in Sichuan, and is now being used in other provinces, as well, to guide communes which want to start their own biogas programme. Appendix II describes one such commune in Guangdong (Canton) Province and how they made use of this manual.


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