具有双出口再生单元再生循环水网络的优化.pdfVIP

化 工 进 展 2014 年第 33 卷第 3 期 CHEMICAL INDUSTRY AND ENGINEERING PROGRESS ·605· 研究开发 具有双出口再生单元再生循环水网络的优化 史春峰，邓春，冯霄 （中国石油大学（北京）新能源研究院，北京 102249） 摘要：污水循环回用，提高污水的重复利用率，是实现节水优化的有效途径。再生后浓度是影响污水回用再生 系统新鲜水用量、操作费用的关键因素。随着处理深度的增加，再生水的水质不断上升，可匹配的水阱增加， 但污水的回用成本不断上涨，再生率也相应下降，可回用水量减少。本文提出双出口再生单元再生后浓度与再 生率、回用成本关系的关联模型，并求解具体的案例说明具有双出口再生单元再生循环水网络的优化设计步骤。 采用改进的问题表法，确定不同再生后浓度下具有双出口再生单元再生循环水网络的目标值。综合考虑新鲜水 量和操作成本，确定最优再生后浓度，并对水网络进行优化。计算实例表明，本文建立的方法是可行的。工业 实例分析，石化企业雨排水处理回收利用项目考虑了再生率与再生后浓度关系，比较两种方案的节水量，以便 指导方案的选择。 关键词：废水；废水最小化；再生；优化 中图分类号：TQ 085 文献标志码：A 文章编号：1000–6613（2014）03–0605–06 DOI：10.3969/j.issn.1000-6613.2014.03.014 Optimization of regeneration recycling water networks with double outlets regeneration units SHI Chunfeng，DENG Chun，FENG Xiao （Institute of New Energy，China University of Petroleum，Beijing 102249，China） Abstract：Wastewater regeneration reuse is an effective way to reduce freshwater consumption of industrial water systems. The post-regeneration (Cr) is a critical factor to reduce freshwater consumption and operating cost. The quality of regenerated water improves continuously with the increase of the depth of treatment. However，the increase in the cost of wastewater treatment and decrease of the regeneration ratio (Ψ) will leads to the reduction of the quantity of regenerated water. In this paper，the post-regeneration (Cr) was related with the operating cost and regeneration ratio (Ψ). An optimal method of regeneration recycling water networks with double outlets regeneration unit was proposed with a case study，using an improved problem table method. Taking freshwater consumption and operating cost into ac