上海石化地区工业补充水水质差,而循环冷却水系统即要达到高浓缩倍数(4～6倍)运行,又要确保换热设备连续3～5年的长周期运行,两者互为矛盾。采用反渗透技术,改善循环冷却水系统补充水水质,在原来水质指标不变的前提下,浓缩倍数明显提高,节水降耗,采用高浓缩倍数水处理方案以及每年一次的系统不停车清洗,既提高了浓缩倍数又确保了水质、减少了沉积物的积累,取得了明显效果。

Industrial make-up water quality is bad in Shanghai Petro-Chemical Area. Since the circulating cooling water system has to run at 4 ~ 6 times of concentration cycles and to assure the heat transfer exchangers to run for long period of 3 ~ 5 years continuously, contradictions with each other occurs. Reverse osmosis technology has been used to improve the quality of the fresh make-up water in the circulating cooling water system. On the premise of not changing the index of the water quality, the cycles of concentration have been increased greatly. So water saving and cost lowering are realized. The high cycles of concentration water treatment programme and on-line chemical cleaning once per year can increase the cycles of concentration, improve the water qaulity, and reduce the accumu lation of the deposits. Remarkable results have been obtained.