The review of domestic and international biogas frontiers and technical achievements — A study of the development of biogas technology in Gansu Province

Biogas digester technology is an available method in mitigating energy crisis, dealing with global climate change and improving rural ecological environment. This paper study the development history, new trend and research hotpots of biogas technology of those countries in which biogas technology are well developed, contract different development models of these countries to reveal their qualities and law of development, then, draw the optimum model for the development of china biogas technology pertinently. Combining the biogas digester constructional practices and surveys in Gansu province, the author indicated the problems remain in the development of biogas digester, at the same time, make strategy for the development of biogas technology of Gansu province. This paper can be a reasonable reference for the decision-making of biogas developmental policy.