摘要
将达标排放的炼油废水经深度处理后回用于循环冷却水系统,是石油、石化行业节水减污的一个行之有效的办法,但生物黏泥控制问题则是实际应用的瓶颈及难点。为此,笔者采用循环冷却水系统的动态模拟装置,考察了流速、温度等因素对生物黏泥成分及性能的影响。结果表明,流速在1.0m/s或温度在30℃时,微生物胞外聚合物产生量大,机械强度最强,但生物黏泥湿重最低;综合考虑生物黏泥成分及性能指标,流速1.0m/s和温度30℃是循环冷却水系统中控制生物黏泥生长的最佳操作条件。
With the decrease of water resources,the use of advanced treated refinery wastewater in recirculation cooling water system is an effective method to save water and to reduce the pollution of petroleum and petrochemical industry.However,the control of biofouling is the bottleneck in the application of this technology.So the effects of flow velocity and temperature on the components and characteristics of biofouling were investigated in a dynamic model unit of recirculation cooling water system.The results showed that the content of extracellular polymeric substance and the mechanical intensity of biofouling both reached its biggest values,but biofouling wet mass was low at the flow velocity of 1.0 m/s or at the temperature of 30℃.It is concluded that the operating conditions of 1.0 m/s and 30℃ were the optimum conditions to control the biofouling in the recirculation cooling water system.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2010年第3期456-461,共6页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
国家自然科学基金项目(20707040)
污染控制与资源化研究国家重点实验室开放课题(PCRRF08002)
中央高校基本科研业务费专项基金资助
关键词
循环冷却水
生物黏泥
流速
温度
胞外聚合物
强度
湿重
recirculation cooling water
biofouling
flow velocity
temperature
extracellular polymeric substance
intensity
wet mass
