Analysis on Operation Technology Mode of Dry-Wet Fermentation System and Thermoelectric Fertilizer Poly-gen-eration
In order to solve the problems such as the large amount of biogas in traditional biogas projects,unstable opera-tion efficiency and single profit model.In this paper,a biogas comprehensive utilization project in Hebei Province is taken as an example,independently developed the dry-wet coupled anaerobic gas generation technology by combining the advanta-ges and disadvantages of wet fermentation and dry fermentation respectively,the core technology of anaerobic gas produc-tion,grid-connected power generation,bio-organic fertilizer production and carbon emission reduction technology model are described in detail.The results show that:when the solid content rate of manure is 18%~30%and the solid content rate of straw is ≥85%,"zero emission"of biogas slurry can be achieved through dry-wet coupled anaerobic gas generation technology,an ecological cycle comprehensive utilization system of"gas,heat,electricity,fertilizer and carbon"multi-generation can be created to produce clean energy and supply bio-organic fertilizers,which can effectively improve soil com-paction and promote the construction of high-standard farmland.To improve the quality of agricultural products,the imple-mentation of the project is of great significance for realizing the green ecological cycle of agriculture and rural areas,reduc-ing foreign energy dependence and realizing negative carbon emissions.
dry-Wet Fermentation Systembiogas power generationfertilizeroperation technical modecarbon emission reduction