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针对我国主要的10万t污水处理厂100 m~3/h的沼气,利用Matlab进行了二段膜法纯化系统的设计,并用运行生产能力指数法进行了技术经济分析。结果表明,100 m~3/h的二段膜法沼气纯化系统总投资费用为84.9万元,年运行费用为34.8万元,单位处理能力投资为8 500元/(m~3·h),单位沼气处理成本为0.35元/m~3。膜组件和压缩机费用为最主要的投资成本,压缩机电耗为最主要的运行成本。处理规模从100 m~3/h提高到1 000 m~3/h时,膜系统的单位处理能力投资和单位处理成本均显著下降。操作压力增高,膜使用面积显著降低,但压缩机费用增大,功耗增加。
Aimed at the 100 m ~ 3 / h biogas in the main 100,000 t WWTP in China, the design of the two-stage membrane purification system was carried out by Matlab, and the technical and economic analysis was carried out with the index of operation production capacity. The results showed that the total investment cost of biogas purification system of 100 m ~ 3 / h was 849,000 yuan, the annual operation cost was 348,000 yuan, the investment of unit processing capacity was 8,500 yuan / (m ~ 3 · h) Unit biogas processing costs 0.35 yuan / m ~ 3. Membrane components and compressor costs for the main investment costs, compressor power consumption is the most important operating costs. When the processing scale is increased from 100 m 3 / h to 1 000 m 3 / h, the unit processing capacity investment and the unit processing cost of the membrane system all decrease significantly. Operating pressure increases, membrane area significantly reduced, but the compressor costs increase, power consumption increases.