印染集中区水网络优化研究

Optimization of water network in a dyeing and finishing industrial concentration area

耗水量大、水环境污染严重是印染集中区的一个突出问题.本文建立水网络数学模型,对印染集中区用水排水网络进行系统规划,该模型以集中区总成本最低为目标函数,模拟了以多级组合工艺为特点的污水处理设施数学模型.运用该模型对东北某印染集中区水网络进行设计和优化改进,在保证废水达标排放、成本最低的条件下,构建了企业内及企业间最佳回用网络,确定了污水处理设施工艺最优方案,并明确各级处理工艺中不同品质的处理水回用集中区企业的最优途径,为集中区内污水处理设施提标改造计划提供参考.研究结果表明:该模型在工业集中区或工业园用水规划及废水减量方面具有实用价值和较好的应用前景.

Large water consumption and serious water pollution are prominent problems in dyeing and finishing industrial concentration area. In this paper, a mathematical programming model for water integration is established based on mathematical programming method. The model, with the minimum total annual cost as the objective function, considers the shared treatment facilities characterized by multistage wastewater treatment technology. This model is applied in the design and optimization of the water network of a dyeing and finishing industrial concentration area in northeast China. The optimal water recycling network is obtained under the condition that total annual cost is the lowest and wastewater is discharged with standard level. Thus, the optimal water treatment process and recycling way of treated water with different quality can be determined, which can provide reference for upgrading and reconstruction plan of water treatment facilities in the area. The results indicate that the mathematical model is practical and promising in water use programming and wastewater reduction of the dyeing and finishing industrial concentration area.