DEVELOPMENT OF ACTIVATED WATER TREATMENT SYSTEM FOR CONTROLLING PLANT GROWTH

在保护水环境和保证原水质量以控制植物生长方面，重点研究了如何减少化学药剂的使用，并介绍了有效的水处理方法。在水处理系统中，该装置包括在不锈钢容器中的颗粒陶瓷。选用具有优良模塑性和烧结性能的硅酸盐矿物作为天然原料，将一些天然岩石磨成粉末，制成表面带电荷的颗粒状陶瓷。颗粒陶瓷粒径为2mm，绝对重力2.62，莫氏硬度6.8。当水从容器的下部流向上部时，颗粒陶瓷在不锈钢容器中流化。经陶瓷处理后的水对水的化学成分变化不大。制备了相应的高岭土浓度，用罐子水比较了陶粒处理后的水与未处理水的絮凝效果。结果表明，陶瓷处理后的水表现出明显的变化。絮凝作用基于电化学反应，悬浮液的表面电荷被絮凝剂的电荷中和，悬浮液在桥接作用下形成大的絮团。因此，经过陶瓷处理的活性水中容易出现菌落。在温室中，羽化率与对照差异显著。在采用该水处理体系的NFT培养中，幼苗长度、根长和生长速度也有差异。上述结果表明，经陶瓷处理的水提高了种子的活力，具有良好的优质植物生产效果。

On the water environment protection and the assuring good quality raw water for controlling plant growth, this study focused on how to reduce the use of chemical agents and introduced effective water treatment. In the water treatment system, the apparatus included granular ceramics in a stainless steel vessel. Some natural rocks were selected and ground to powder, and the granular ceramics having electric charges at the surface were produced, by using the natural raw materials of silicate minerals having excellent mouldabilities and sintering properties. The size of the granular ceramics was 2 mm in diameter with the absolute gravity 2.62, and mohs'hardness 6.8. When the water goes through from the lower to the upper side of the vessel, the granular ceramics fluidize in the stainless steel vessel. The ceramics-treated water didn't little change the chemical composition in water. The Kaolin concentration was prepared, and a Jar water was used to compare the flocculation effect of the ceramics-treated water with non-treated water. As the results, the ceramics-treated water showed significant changes. Flocculation was based on electrochemical reaction, the surface charges of suspension were neutralized by the charges of flocculant, and the suspension formed large flock by the bridge action. Therefore, flocks were liable to appear in activated water by the ceramics treatment. In green houses, the emergence rates were differentiated at a significance level to the control. In the NFT culture using this water treatment system, the seedling length, the root length and the growing speed were also differentiated. The above results show that the ceramics-treated water enhanced the vigor of the seeds, and displayed a good quality plant production effect.