多水源循环冷却水系统高浓缩倍数稳定运行技术研究-环境工程专业论文.docxVIP

中文摘要 本文旨在开发用于在高浓缩倍率(4 倍)以上运行，以城市污水、工业污水、雨 水等非常规多水源，为联合钢铁工业补充水源的工业用水（再生水）成套技术，即 非常规水源循环冷却水高浓缩倍率运行控制技术。结合经双膜法深度处理的中水回 用时所呈现出的负硬度腐蚀性的水质特点，利用药剂间的协同效应进行了复配，通 过正交试验设计，提出了高效的环境友好型水处理剂及水处理方案。通过对其缓蚀 性能、阻垢性能、配伍性、热稳定性的研究表明，药剂具有良好的水处理性能。通 过实验室动态模拟试验，以及现场旁路监测试验对药剂综合性能评价，研究表明， 该高效的环境友好型水处理剂及水处理方案具有良好的水处理效果。动态模拟试验 结果，试验水的浓缩倍率达到 4 倍时，碳钢的腐蚀速率为 0.075mm/a，系统的黏附 附速率为 9.89mcm，污垢热阻为 1.56×10-4m2.K/W。现场旁路监测试验结果，碳钢腐 蚀速率 0.072mm/a、黏附速率为 9.93mcm、异养菌小于 1×105 个/mL。 为实现循环冷却水系统的精确化管理，减少人为操作影响因素，开发了与该水 处理方案相匹配的智能化控制系统。它的应用使得循环水系统在高浓缩倍率下运行 时，实现了水质运行的平稳化，加药的精准化，监测控制的智能化。 最终，建立了一套联合钢铁企业以非常规水为唯一生产水源的水资源循环利用 和污染减排综合示范工程，实现综合生产废水接近零排放，为严重缺水城市的钢铁 企业水资源高效利用和污染减排提供系统成套技术和工程示范。 关键词：高浓缩倍率，负硬度，中水回用，智能化控制系统 ABSTRACT In this article a complete set of technology will be developed to supplement industrial water (recycling water) for the united iron and steel industry ，which makes full use of unconventional water such as the urban sewage ，the industrial sewage and rainwater running at a high concentration rate of 4 times as much as water . That is ， the operation control technology of circulating cooling water running at a high concentration rate for unconventional water resources. In combination with double membrane method for deep treatment of reclaimed water recycling ，the water quality shows the negative hardness and corrosivity. Compounded with the synergistic effect among drugs and orthogonal experiment design ， an efficient and environmental friendly water treatment agent and water treatment solution is put forward.Through the studies of the corrosion mitigation performance， inhibitor performance， compatibility and performance of thermal stability， the agents show good water treatment performance. By means of the dynamic simulation test under the lab conditions， and the comprehensive performance evaluation of agents through the bypass tests in the testing ground， the research shows that the efficient environment friendly water treatment agent and the water treatment solution has a good water treatment e