深度处理污水在循环冷却水系统回用的研究

摘要

After recycling advanced treated wastewater into the circulating cooling water system,the corrosion rate of the monitoring carbon steel strip increased significantly,sometimes it even exceeded the upper limit of the standard set by petrochemical industry. To solve this serious corrosion problem, factors affecting this corrosion system were analyzed and it was concluded that the corrosion and scale inhibitor in the system could not work effectively due to the degradation of water quality by using advanced treated wastewater as make up water. Through optimizing the formula of corrosion and scale inhibitor, a modified inhibitor replaced the former one and the corrosion problem was solved successfully.%在循环冷却水系统回用了深度处理污水作补充水后,导致腐蚀率大幅升高,甚至超过石化行业标准的上限值.针对循环水的腐蚀性急剧加重的问题,分析各种影响因素,发现主要原因是回用水引起水质恶化,使原有的缓蚀阻垢剂不能起到足够的缓蚀作用.改进缓蚀阻垢剂的配方后,循环冷却水的监测腐蚀率明显降低,且远小于石化行业标准的上限值.