2t⼀h双级反渗透设备额定总净水量是多少

2025-04-07 05:05:06
推荐回答(1个)
回答1:

2t/h指的就是产水为每小时两吨

影响反渗透设备产水量的因素有哪些?

进水压力对反渗透膜的影响

进水压力本身并不会影响盐透过量,但是进水压力升高使得驱动反渗透的净压力升高,使得产水量加大,同时盐透过量几乎不变,增加的产水量稀释了透过膜的盐分,降低了透盐率,提高脱盐率。当进水压力超过一定值时,由于过高的回收率,加大了浓差极化,又会导致盐透过量增加,抵消了增加的产水量,使得脱盐率不再增加。

进水温度对反渗透膜的影响

反渗透膜产水电导对进水水温的变化十分敏感,随着水温的增加,水通量也线性的增加,进水水温每升高1℃,产水通量就增加2.5%~3.0%;其原因在于透过膜的水分子粘度下降、扩散性能增强。进水水温的升高同样会导致透盐率的增加和脱盐率的下降,这主要是因为盐分透过膜的扩散速度会因温度的提高而加快。

进水pH值对反渗透膜的影响

进水pH值对产水量几乎没有影响,而对脱盐率有较大影响。由于水中溶解的CO2受pH值影响较大,pH值低时以气态CO2形式存在,容易透过ge反渗透膜,所以pH低时脱盐率也较低,随pH升高,气态CO2转化为HCO-3和CO2-3离子,脱盐率也逐渐上升,在pH7.5~8.5间,脱盐率达到较高。

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