Three anaerobic reactors for treating starch wastewater as the Anaerobic Digester (AD), Up-flow Anaerobic Sludge Blanket (UASB) reactor, and Internal Circulation (IC) reactor, were assessed in terms of energy supply and economic factors pertaining to biogas production. For all three reactors, more than 90% of heat loss was derived from the substrate heating loss. When the Chemical Oxygen Demand (COD) of wastewater exceeded 15,000mg/L, the UASB and IC reactors produced excess energy and achieved an economic surplus throughout the year. The UASB and IC reactors reached energy equilibrium throughout the year when the influent COD was 11,195.44mg/L, and 9,844.67mg/L, respectively. The economic equilibrium of the UASB and IC reactors was achieved for influent COD of 12,984mg/L and 11,561mg/L, respectively. The energy and economic equilibria of the AD could not be achieved throughout the year with influent COD concentrations ranging from 5,000mg/L to 20,000mg/L.

根据能源供应和与沼气生产相关的经济因素，评估了三个用于处理淀粉废水的厌氧反应器，分别为厌氧消化器（AD），上流厌氧污泥覆盖物（UASB）反应器和内部循环（IC）反应器。对于所有三个反应器，超过90％的热损耗来自基板的加热损耗。当废水的化学需氧量（COD）超过15,000mg / L时，UASB和IC反应器产生了过量的能量，并且全年实现了经济盈余。当进水COD分别为11,195.44mg / L和9,844.67mg / L时，UASB和IC反应器全年达到能量平衡。进水COD分别为12,984mg / L和11,561mg / L时，UASB和IC反应器达到了经济平衡。