| 1. | Design standard for removal of fluorides from drinking water
饮用水除氟设计规程 |
| 2. | Specification for design of removing fluorides form drinking water
饮用水除氟设计规程 |
| 3. | Preparation of silica gel impregnated with zirconium oxide adsorbent for fluoride removal
硅胶负载氧化锆除氟吸附剂的制备 |
| 4. | Technological calcuation on defluorinator device with fixed bed using activated alumina
固定床活性氧化铝除氟装置的工艺计算 |
| 5. | Objective to study the function of electromagnetic fields on decrease turbidity value and fluoride in drinking water
摘要目的探讨复合电磁场降低水的浑浊度和除氟功能。 |
| 6. | Batch reactor tests were performed to study the effects of ph , initial fluoride concentration and adsorbent size
为了确定影响吸附剂降氟的各种因素及影响程度，对两种除氟剂进行了静态实验、连续处理实验。 |
| 7. | In this paper , research on the use of activated alumina and bone char was dong on both batch reactor and continuous - flow column
为了探索合理的除氟方法和工艺，本论文对活性氧化铝和骨炭除氟性能进行了系统的研究。 |
| 8. | The effective regeneration procedure is soaking the adsorbent 30 ~ 50h with 1 - 2 % al2 ( so4 ) 3 for activated alumina and 20 ~ 30h with 1 - 1 . 5 % naoh for bone char . studies show both activated alumina and bone char are excellent adsorbents for the removal of fluoride from drinking water . fluoride concentration below 1 . 0mg / l can be acquired easily with them and meets the requirement of drinking water standards
对两种除氟剂进行的再生液与吸附剂体积比为1 : 1的再生实验表明：用硫酸铝溶液对活性氧化铝再生，再生浓度为1 2 ，再生时间为30 50h ，冲洗浸泡时间为5h效果较好；对骨炭再生，氢氧化钠再生液浓度为1 1 . 5 ，再生时间为20 30h效果较好。 |
| 9. | According to the water supply source used the mining area in bai yun , based on the mechanism of coagulation and flocculation , the feasibility of removing fluoride from water with the method of coagulation and filtration is studied through experiment . and several key parameters which affect defluorination are also analyzed . by using polyaluminum chloride ( pac ) as coagulant , the optimum ranges of the operational parameters are obtained
本文根据白云鄂博矿区饮用水的供水水源，以混凝机理为基础，通过静态和动态实验，对用混凝过滤法除氟的可行性进行了研究，并对影响除氟因素的几个主要参数进行实验分析，得出了用碱式氯化铝作为混凝剂进行实际运行时，参数最佳取值范围。 |
| 10. | It is shown that the effect of pac removing fluoride is closely related to ph value and the optimum range of ph value is between 6 . 1 ? 7 . 1 . under this condition , further studies are made on the optimum coagulant dosage , mixing time , artificial turbidity , filtration rate and filter bed ' s depth and the optimum range of these parameters have been determined
碱式氯化铝的除氟能力与原水的ph值有密切的关系，除氟最佳ph值范围为6 . 1 ? 7 . 1 。在此条件下，进一步对最佳投药量、混合时间、反应时间、人工辅助投加浊度、滤速及滤层厚度进行了研究，确定了其最优的取值。 |
