Application of Biogas Project in Eco-farming Resort

摘要

The running of a 300m3 mesophilic biogas fermentor for manure treatment in an ecofarmingresort had been continuously monitored in August 2003. The gas production rate can bemaintained in the scope of 0.86-1.11 m3/m3/d while keeps the concentration of dried substance in thescope of 6-9% and pH of fermentation fluid in the scope of 7.2-7.5. Everyday, 6.0×106 KJ heat canbe provided by the biogas fermentation as an alternative energy . In the winter, the backwater of thegreenhouse-heated system, which is heated by geothermy, is utilized to heat up the fermentationprocess. Moreover, the anaerobic fermentation residues are applied to the agricultural production asorganic fertilizer. According to the determination of the soil nutritional ingredients, the organic matter,ammonium-nitrogen, effective kalium and whole salt are all up to an abundant degree. The biogasproject has great environmental and ecological benefits so as to bring along the whole economicgrowth of the resort. The research indicates that biogas project in an eco-farming resort can reducethe output of pollutant, decontaminate the environment, save the energy, provide high quality organicfertilizer.