关键词: 深度处理污水, 循环冷却水系统, 腐蚀, 缓蚀阻垢剂, 配方优化

Abstract: 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.

Key words: advanced treated wastewater, circulating cooling water system, corrosion, corrosion and scale inhibitor, formula optimization