| 1. | Application and research of - caso4 . 1 2h2o in beauty face and skin care
在美容护肤中的应用研究 |
| 2. | Effects of na2edta and na4edta ' s concentration on dissolving caso4 were studied
研究了反应浓度对na _ 4edta和na _ 2edta溶解硫酸钙的影响。 |
| 3. | Optimum conditions for preparation of ca - based sorbent from hydration of ca 2 , caso4 and fly ash
烟尘水热化合反应制备钙基脱硫剂工艺优化 |
| 4. | For na4edta , and the effect of ionic strength on the chelating properties of na4edta and na2edta for caso4 was reviewed
考察了含盐量对na _ 4edta和na _ 2edta溶解硫酸钙性能的影响。 |
| 5. | The variation of product layer diffusivity with these factors was explained by its dependence on the concentrations of defects in cao and caso4 crystals
产物层扩散系数的变化可以其受氧化钙及硫酸钙结晶缺陷的浓度的影响来解释。 |
| 6. | By range analysis and variance analysis , time factor and ph factor were considered that had high remarkable effects on the course of na4edta dissolving caso4
通过极差和方差分析后，认为在na _ 4edta溶解caso _ 4过程中，时间和ph对此反应有高度显著影响。 |
| 7. | In this paper , theories of porous membrane fouling and cleaning were explored , and a series of experiments were especially done to clean caso4 scale in porous membrane
本文就对多孔膜的污染问题进行了理论探讨，并针对多孔膜中硫酸钙垢的清洗作了一系列实验。 |
| 8. | At last , on the basis of above experiments , the five - factor - three - level orthogonal experiments on the relative flux recovery ratio after na2edta and na4edta cleaning pvdf microfiltration membrane that was fouled by caso4 were done
最后，在前面实验的基础上，作出na _ 4edta和na _ 2edta对硫酸钙垢污染的pvdf微滤膜清洗后，相对通量恢复率的五因素三水平正交实验。 |
| 9. | The high - efficiency cleaning agent and optimum conditions were chosen and it has some guiding significance on practice . the main tasks include : by the contrastive experiments of sodium tripolyhosphate , sodium hexametaphosphate , na2edta and na4edta dissolving caso4 , na2edta and n ^ edta were chosen as cleaning agents in this experiment
主要包括：通过对三聚磷酸钠、六偏磷酸钠、乙二胺四乙酸二钠、乙二胺四乙酸四钠四种螯合剂对硫酸钙溶解性对比实验，最终选择乙二胺四乙酸二钠和乙二酸四乙酸四钠作为本实验清洗剂。 |
| 10. | Integrating the dissolving experiments of na2edta and na4edta and the orthogonal experiments , we can conclude that the dissolving property of na ^ edta is relatively more stable and higher than that of na2edta in this experiment . and , the conclusion can be made that for the caso4 scale in membrane na4edta has the best cleaning effect and the optimum condition is ph = 11 , operating pressure = 0 . 1mpa and concentration = 4 % wt
在综合考虑乙二胺四乙酸二钠和乙二胺四乙酸四钠对硫酸钙的溶解性实验及正交实验，和最后对污染膜清洗的正交实验可以看出，尽管最优工程选择中nazedta清洗后膜的相对恢复率略高于na4ed飞’ a ，但其要求条件相对苛刻，从溶解性实验也可看出， na4edrla对硫酸钙的溶解相对稳定，溶解率高。 |
