摘要
明确污水处理中COD去除量与CO2排放的关系,有助于提高污水处理厂COD去除率的同时减少CO2排放量.从系统优化的角度对污水处理节能减排开展研究,以城市污水系统费用最小化为目标,各个污水厂的日处理量和回用水量为系统变量,构建城市典型污水处理系统规划模型,根据参数COD排放标准和二氧化碳排放限值的变化进行优化,调整污水运营,实现经济效益和环境效益的"双赢".COD排放标准分别为二级、一级B、一级A时,总CO2排放量分别为13408.74,15304.47,15900.81t/a.结果表明,COD排放标准越高,COD去除率增大,CO2排放量也随之增大.
Due to the increase wastewater discharge with the rapid economic development, it is desired to achieve the energy conservation and emission reduction of sewage treatment. In addition, realization of the relationship between COD removal and CO2-emission is valuable for improving the COD removal rate and reducing the CO2-emission in the sewage treatment system. In this study, an optimization model for sewage treatment planning is developed for pollutants control and CO2-mitigation emission in sewage treatment system. The optimized sewage-allocation scheme would be generated through the proposed model with the objective of minimized system operation cost. Based on the analysis of COD discharge standard and CO2-emission constraints, the adjustment plans for sewage plant operation would also be obtained, achieving both economic and environmental benefits simultaneously. When COD discharge standard is second, first B, first A, the amount of CO2 emission would be 13408.74, 15304.47, 15900.81t/a, respectively. The results demonstrate that willingness to meet higher COD emission standard would be related to higher COD removal rate and CO2 emission.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2014年第3期681-687,共7页
China Environmental Science
基金
国家环保科研公益项目(201309063)
中央高校基本科研业务费专项资金资助
关键词
污水处理
COD排放
CO2排放
协同控制
优化
sewage treatment
COD emission
CO2 emission
synergistic control
optimization
