摘要
凝结水精处理系统会消耗大量的除盐水,占电厂除盐水消耗总量的50%以上,且设备再生过程中产生的酸碱废水也是高盐废水的重要来源。对此,可通过增大周期制水量和减少自用水量大幅度降低自用水耗。采用西安热工研究院有限公司研发的凝结水精处理系统节水减排降耗新技术,其中包括高速混床运行优化技术、精处理混床智能控制技术、提高高速混床布水均匀性技术以及再生废液中氯离子减排技术,显著地提高了凝结水设备的周期制水量,降低水耗,同时大幅节约除盐水和新鲜水,减少废水排放量和酸碱用量,并且能够极大地降低废水零排放工程的造价和运行费用。这种过程节水法已在国内三十多家大型发电厂成功应用,是一种低成本的节水方式,具有良好的推广应用前景。
Condensate polishing treatment system consumes a large amount of desalted water, which accounts for more than 50% of the total desalted water consumption in power plants, and the acid-base wastewater produced in the process of equipment regeneration is also an important source of high salt wastewater. The ratio of water consumption can be sharply reduced by increasing the cycle water production and decreasing the self water consumption. Xi’an Thermal Power Research Institute Co., Ltd. Has developed a new technology for water saving, emission reduction and consumption reduction of condensate polishing treatment system, which includes the optimization technology of operation in high flowrate mixed-bed(HFMB), the intelligent control technology of polishing treatment mixed bed, the uniform enhancement technology of water distribution in HFMB, and the reduction of chloridion concentration in regenerated waste liquid. All the above technologies can evidently increase the cycle production, reduce the water consumption ratio, save the desalinated water and fresh water significantly, and decrease the waste water discharge and consumption of acid-alkali wastewater. Moreover, these technologies can greatly decrease the cost of zero discharge and operation fees. This method of water saving in process has been successfully used in more than thirty power plants in China. It is a low cost water saving method and has good popularization and application prospect.
作者
田文华
周莉
TIAN Wenhua;ZHOU Li(Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China)
出处
《热力发电》
CAS
北大核心
2019年第1期84-89,共6页
Thermal Power Generation
关键词
凝结水
精处理
节水
减排
降耗
高速混床
运行优化
再生
condensate water
polishing treatment
water saving
emission reduction
consumption reduction
high flowrate mixed bed
operation optimization
regeneration
