阻垢剂在低温多效海水淡化装置中的工业化应用

Industrial Application of Scale Inhibitor in Low-Temperature Multi-Effect Seawater Desalination

目前我国低温多效海水淡化水处理药剂基本为国外公司垄断,价格昂贵。国产海水淡化阻垢缓蚀剂也正在突破瓶颈,质量、性能日渐成熟,但是缺乏统一、完善系统的方法验证,同时缺乏大型海水淡化工程考核验收平台,导致海水淡化水处理药剂价格居高不下。为打破国外垄断,提升我国海水淡化药剂自主创新能力和核心竞争力,并降低药剂使用成本,采用2.5万t/d低温多效海水淡化装置,开展了SD210阻垢剂在工业化试验装置中应用研究。试验结果表明:在为期2个月的试验期内,在SD210投加质量浓度为4~8 mg/L条件下,装置运行安全、平稳,无明显结垢和腐蚀现象;且海水淡化装置产品水水质优于《生活饮用水卫生标准》(GB 5749—2006)所规定的指标要求。综上,SD210阻垢性能良好,能满足低温多效海水淡化装置使用要求。

At present,the low-temperature multi-effect(LT-MED)seawater desalination water treatment agents in China are basically monopolized by foreign companies,and the price is expensive.Domestic scale and corrosion inhibitors for seawater desalination are also breaking through the bottleneck,and their quality and performance are becoming more and more mature,but they are lack of unified and systematic method verification,and lack of examination and acceptance platform for large-scale seawater desalination projects.As a result,the price of seawater desalination water treatment medicament remains high.In order to break the foreign monopoly,enhance the independent innovation ability and core competitiveness of seawater desalination agents in our country,and reduce the use cost of seawater desalination agents,a study on the application of SD210 scale inhibitor in industrial test plant was carried out by using 25000 t/d LT-MED seawater desalination plant.The test results showed that during the 2-month test period,under the condition that the mass volume concentration of SD210 was 4~8 mg/L,the device operates safely and smoothly.No obvious scaling and corrosion.And the water quality of seawater desalination plant was better than that of Standards for Drinking Water Quality(GB 5749—2006).In summary,SD210 has good scale inhibition performance and can meet the requirements of LT-MED seawater desalination plant.