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针对一些偏远海岛、灾区现场等地区电力供应不足、波动性大,常规反渗透产水装置难以满足要求的特点,研究建立了1套5 m3/h一体化海水淡化装置,通过变频控制和切换膜壳、高压泵运行数量进行海水淡化变负荷的实验研究。结果表明,膜壳数与高压泵数量对等时系统运行状况为佳;产水量小于1.25 m3/h时,运行单组膜壳高压泵,系统能耗最低,回收率最高;产水量在1.25~2.5 m3/h时,运行2组膜壳高压泵系统性能为佳;产水量大于2.5 m3/h,运行3组膜壳高压泵为佳;高压泵适宜运行频率为35.9~45.0 Hz,PX压力提升泵的频率在32.0~37.0 Hz时系统运行能耗最低、原水与浓水混合量小且设备运行安全。
For some remote islands, disaster areas and other areas of the power supply shortage, volatility, conventional reverse osmosis water production equipment is difficult to meet the requirements of the characteristics of the study established a 5 m3 / h integrated desalination unit, through the frequency control and switching membrane Shell, high-pressure pump running the number of desalination experiments of variable load. The results show that the system running condition is better when the number of membrane shells is equal to the number of high pressure pumps. When the water production is less than 1.25 m3 / h, the single pump with high energy consumption is operated with the lowest energy consumption and the highest recovery rate. 2.5 m3 / h, the performance of two sets of high-pressured membrane pumps is better; the output of water is more than 2.5 m3 / h, three sets of high-pressure membrane pumps are better; the suitable operating frequency of high-pressure pump is 35.9 ~ 45.0 Hz, When the pump frequency is 32.0 ~ 37.0 Hz, the system energy consumption is the lowest, the mixing amount of raw water and concentrated water is small, and the equipment runs safely.